From 36d22d82aa202bb199967e9512281e9a53db42c9 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 7 Apr 2024 21:33:14 +0200 Subject: Adding upstream version 115.7.0esr. 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.../resources/coop-same-origin-repeated.asis | 24 + .../resources/csp-sandbox.py | 29 + .../resources/fully-loaded.js | 10 + .../resources/iframe-test.js | 234 ++ .../resources/popup-test.js | 99 + .../resources/postback.html | 45 + .../resources/postback.html.headers | 2 + .../resources/redirect.py | 5 + .../resources/resource-cleanup.html | 11 + .../resources/resource-popup.html | 21 + .../resources/universal-worker.js | 2 + .../tentative/restrict-properties/README.md | 9 + .../access-reporting-closed.https.html | 19 + .../access-reporting-openee-rp-ro.https.html | 62 + .../access-reporting-opener-rp-ro.https.html | 71 + .../access-reporting-post-message.https.html | 19 + .../coop-rp-in-navigation-chain.https.html | 65 + .../coop-rp-in-navigation-chain.https.html.headers | 1 + .../iframe-popup-about-blank.https.window.js | 37 + ...frame-popup-about-blank.https.window.js.headers | 2 + .../iframe-popup-to-so.https.html | 90 + .../iframe-popup-to-so.https.html.headers | 1 + 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0000000000..94b925cc07 --- /dev/null +++ b/testing/web-platform/tests/html/META.yml @@ -0,0 +1,8 @@ +spec: https://html.spec.whatwg.org/multipage/ +suggested_reviewers: + - annevk + - domenic + - foolip + - jdm + - jgraham + - zqzhang diff --git a/testing/web-platform/tests/html/README.md b/testing/web-platform/tests/html/README.md new file mode 100644 index 0000000000..2a444bd5a7 --- /dev/null +++ b/testing/web-platform/tests/html/README.md @@ -0,0 +1,21 @@ +# HTML + +This directory contains tests for [HTML](https://html.spec.whatwg.org/multipage/). + +Sub-directory names should be based on the URL of the corresponding part of the +multipage-version specification. For example, the URL of +"8.3 Base64 utility methods" is [https://html.spec.whatwg.org/multipage/webappapis.html#atob](https://html.spec.whatwg.org/multipage/webappapis.html#atob). So the directory in WPT is [webappapis/atob/](/html/webappapis/atob). + +For historical reasons, parts of HTML have their own directories: + +* [/custom-elements](/custom-elements) +* [/eventsource](/eventsource) +* [/imagebitmap-renderingcontext](/imagebitmap-renderingcontext) +* [/innerText](/innerText) +* [/shadow-dom](/shadow-dom) +* [/webmessaging](/webmessaging) +* [/websockets](/websockets) +* [/webstorage](/webstorage) +* [/workers](/workers) +* [/worklets](/worklets) +* [/x-frame-options](/x-frame-options) diff --git a/testing/web-platform/tests/html/anonymous-iframe/anonymous-iframe-popup.tentative.https.window.js b/testing/web-platform/tests/html/anonymous-iframe/anonymous-iframe-popup.tentative.https.window.js new file mode 100644 index 0000000000..fbdeeab4ed --- /dev/null +++ b/testing/web-platform/tests/html/anonymous-iframe/anonymous-iframe-popup.tentative.https.window.js @@ -0,0 +1,67 @@ +// META: timeout=long +// META: script=/common/get-host-info.sub.js +// META: script=/common/utils.js +// META: script=/common/dispatcher/dispatcher.js +// META: script=/html/cross-origin-embedder-policy/credentialless/resources/common.js + +const {ORIGIN, REMOTE_ORIGIN} = get_host_info(); +const control_iframe = document.createElement('iframe'); +const iframe_credentialless = document.createElement('iframe'); + +promise_setup(async t => { + const createControlIframe = new Promise(async resolve => { + control_iframe.onload = resolve; + control_iframe.src = ORIGIN + `/common/blank.html`; + document.body.append(control_iframe); + }); + + const createIframeCredentialless = new Promise(async resolve => { + iframe_credentialless.onload = resolve; + iframe_credentialless.src = ORIGIN + `/common/blank.html`; + iframe_credentialless.credentialless = true; + document.body.append(iframe_credentialless); + }); + + await Promise.all([createControlIframe, createIframeCredentialless]); +}); + +// Create cross-origin popup from iframes. The opener should be blocked for +// credentialless iframe and work for normal iframe. +promise_test(async t => { + const control_token = token(); + const control_src = REMOTE_ORIGIN + executor_path + `&uuid=${control_token}`; + const control_popup = control_iframe.contentWindow.open(control_src); + add_completion_callback(() => send(control_token, "close();")); + assert_equals( + control_popup.opener, control_iframe.contentWindow, + "Opener from normal iframe should be available."); + + const credentialless_token = token(); + const credentialless_src = + REMOTE_ORIGIN + executor_path + `&uuid=${credentialless_token}`; + const credentialless_popup = + iframe_credentialless.contentWindow.open(credentialless_src); + add_completion_callback(() => send(credentialless_token, "close();")); + assert_equals(credentialless_popup, null, + "Opener from credentialless iframe should be blocked."); +}, 'Cross-origin popup from normal/credentiallessiframes.'); + +// Create a same-origin popup from iframes. The opener should be blocked for +// credentialless iframe and work for normal iframe. +promise_test(async t => { + const control_token = token(); + const control_src = ORIGIN + executor_path + `&uuid=${control_token}`; + const control_popup = control_iframe.contentWindow.open(control_src); + add_completion_callback(() => send(control_token, "close();")); + assert_equals( + control_popup.opener, control_iframe.contentWindow, + "Opener from normal iframe should be available."); + + const credentialless_token = token(); + const credentialless_src = + ORIGIN + executor_path + `&uuid=${credentialless_token}`; + const credentialless_popup = iframe_credentialless.contentWindow.open(credentialless_src); + add_completion_callback(() => send(credentialless_token, "close();")); + assert_equals(credentialless_popup, null, + "Opener from credentialless iframe should be blocked."); +}, 'Same-origin popup from normal/credentialless iframes.'); diff --git a/testing/web-platform/tests/html/anonymous-iframe/anonymous-window.tentative.https.window.js b/testing/web-platform/tests/html/anonymous-iframe/anonymous-window.tentative.https.window.js new file mode 100644 index 0000000000..8c9c103429 --- /dev/null +++ b/testing/web-platform/tests/html/anonymous-iframe/anonymous-window.tentative.https.window.js @@ -0,0 +1,50 @@ +// META: script=/common/get-host-info.sub.js +// META: script=/common/dispatcher/dispatcher.js +// META: script=/html/cross-origin-embedder-policy/credentialless/resources/common.js + +const {ORIGIN} = get_host_info(); + +promise_test_parallel(async t => { + const iframe = document.createElement("iframe"); + iframe.src = ORIGIN + "/common/blank.html?pipe=status(204)"; + iframe.credentialless = false; + document.body.appendChild(iframe); + iframe.credentialless = true; + iframe.contentWindow.modified = true; + iframe.src = ORIGIN + "/common/blank.html"; + // Wait for navigation to complete. + await new Promise(resolve => iframe.onload = resolve); + assert_true(iframe.credentialless); + assert_true(iframe.contentWindow.credentialless); + assert_equals(undefined, iframe.contentWindow.modified); +}, "Credentialless (false => true) => window not reused."); + +promise_test_parallel(async t => { + const iframe = document.createElement("iframe"); + iframe.src = ORIGIN + "/common/blank.html?pipe=status(204)"; + iframe.credentialless = true; + document.body.appendChild(iframe); + iframe.credentialless = false; + iframe.contentWindow.modified = true; + iframe.src = ORIGIN + "/common/blank.html"; + // Wait for navigation to complete. + await new Promise(resolve => iframe.onload = resolve); + assert_false(iframe.credentialless); + assert_false(iframe.contentWindow.credentialless); + assert_equals(undefined, iframe.contentWindow.modified); +}, "Credentialless (true => false) => window not reused."); + +promise_test_parallel(async t => { + const iframe = document.createElement("iframe"); + iframe.credentialless = true; + iframe.src = ORIGIN + "/common/blank.html?pipe=status(204)"; + document.body.appendChild(iframe); + iframe.credentialless = true; + iframe.contentWindow.modified = true; + iframe.src = ORIGIN + "/common/blank.html"; + // Wait for navigation to complete. + await new Promise(resolve => iframe.onload = resolve); + assert_true(iframe.credentialless); + assert_true(iframe.contentWindow.credentialless); + assert_true(iframe.contentWindow.modified); +}, "Credentialless (true => true) => window reused."); diff --git a/testing/web-platform/tests/html/anonymous-iframe/cache-storage.tentative.https.window.js b/testing/web-platform/tests/html/anonymous-iframe/cache-storage.tentative.https.window.js new file mode 100644 index 0000000000..b816de4cd5 --- /dev/null +++ b/testing/web-platform/tests/html/anonymous-iframe/cache-storage.tentative.https.window.js @@ -0,0 +1,60 @@ +// META: script=/common/get-host-info.sub.js +// META: script=/common/utils.js +// META: script=/common/dispatcher/dispatcher.js +// META: script=/html/cross-origin-embedder-policy/credentialless/resources/common.js +// META: script=./resources/common.js + +// A script storing a value into the CacheStorage. +const store_script = (key, value, done) => ` + const request = new Request("/${key}.txt"); + const response = new Response("${value}", { + headers: { "content-type": "plain/txt" } + }); + const cache = await caches.open("v1"); + const value = await cache.put(request, response.clone()); + send("${done}", "stored"); +`; + +// A script loading a value from the CacheStorage. +const load_script = (key, done) => ` + const cache = await caches.open("v1"); + const request = new Request("/${key}.txt"); + try { + const response = await cache.match(request); + const value = await response.text(); + send("${done}", value); + } catch (error) { + send("${done}", "not found"); + } +`; + +promise_test(async test => { + const origin = get_host_info().HTTPS_REMOTE_ORIGIN; + const key_1 = token(); + const key_2 = token(); + + // 2 actors: A credentialless iframe and a normal one. + const iframe_credentialless = newIframeCredentialless(origin); + const iframe_normal = newIframe(origin); + const response_queue_1 = token(); + const response_queue_2 = token(); + + // 1. Each of them store a value in CacheStorage with different keys. + send(iframe_credentialless , store_script(key_1, "value_1", response_queue_1)); + send(iframe_normal, store_script(key_2, "value_2", response_queue_2)); + assert_equals(await receive(response_queue_1), "stored"); + assert_equals(await receive(response_queue_2), "stored"); + + // 2. Each of them tries to retrieve the value from opposite side, without + // success. + send(iframe_credentialless , load_script(key_2, response_queue_1)); + send(iframe_normal, load_script(key_1, response_queue_2)); + assert_equals(await receive(response_queue_1), "not found"); + assert_equals(await receive(response_queue_2), "not found"); + + // 3. Each of them tries to retrieve the value from their side, with success: + send(iframe_credentialless , load_script(key_1, response_queue_1)); + send(iframe_normal, load_script(key_2, response_queue_2)); + assert_equals(await receive(response_queue_1), "value_1"); + assert_equals(await receive(response_queue_2), "value_2"); +}) diff --git a/testing/web-platform/tests/html/anonymous-iframe/cookie-store.tentative.https.window.js b/testing/web-platform/tests/html/anonymous-iframe/cookie-store.tentative.https.window.js new file mode 100644 index 0000000000..ddad924ea0 --- /dev/null +++ b/testing/web-platform/tests/html/anonymous-iframe/cookie-store.tentative.https.window.js @@ -0,0 +1,94 @@ +// META: timeout=long +// META: script=/common/get-host-info.sub.js +// META: script=/common/utils.js +// META: script=/common/dispatcher/dispatcher.js +// META: script=/html/cross-origin-embedder-policy/credentialless/resources/common.js +// META: script=./resources/common.js + +// A set of tests, checking cookies defined from within a credentialless iframe +// continue to work. + +const same_origin = get_host_info().HTTPS_ORIGIN; +const cross_origin = get_host_info().HTTPS_REMOTE_ORIGIN; +const cookie_key = token() + +const credentialless_iframe = newIframeCredentialless(cross_origin); + +// Install some helper functions in the child to observe Cookies: +promise_setup(async () => { + await send(credentialless_iframe, ` + window.getMyCookie = () => { + const value = "; " + document.cookie; + const parts = value.split("; ${cookie_key}="); + if (parts.length !== 2) + return undefined + return parts.pop().split(';').shift(); + }; + + window.nextCookieValue = () => { + return new Promise(resolve => { + const old_cookie = getMyCookie(); + let timeToLive = 40; // 40 iterations of 100ms = 4s; + const interval = setInterval(() => { + const next_cookie_value = getMyCookie(); + timeToLive--; + if (old_cookie !== next_cookie_value || timeToLive <= 0) { + clearInterval(interval); + resolve(next_cookie_value) + } + }, 100) + }); + }; + `); +}, "Setup"); + +promise_test(async test => { + const this_token = token(); + send(credentialless_iframe, ` + document.cookie = "${cookie_key}=cookie_value_1"; + send("${this_token}", getMyCookie()); + `); + + assert_equals(await receive(this_token), "cookie_value_1"); +}, "Set/Get cookie via JS API"); + +promise_test(async test => { + const resource_token = token(); + send(credentialless_iframe, ` + fetch("${showRequestHeaders(cross_origin, resource_token)}"); + `); + + const request_headers = JSON.parse(await receive(resource_token)); + const cookie_value = parseCookies(request_headers)[cookie_key]; + assert_equals(cookie_value, "cookie_value_1"); +}, "Get Cookie via subresource requests"); + +promise_test(async test => { + const resource_token = token(); + const resource_url = cross_origin + "/common/blank.html?pipe=" + + `|header(Set-Cookie,${cookie_key}=cookie_value_2;Path=/common/dispatcher)`; + const this_token = token(); + send(credentialless_iframe, ` + const next_cookie_value = nextCookieValue(); + fetch("${resource_url}"); + send("${this_token}", await next_cookie_value); + `); + + assert_equals(await receive(this_token), "cookie_value_2"); +}, "Set Cookie via subresource requests"); + +promise_test(async test => { + const resource_token = token(); + const resource_url = cross_origin + "/common/blank.html?pipe=" + + `|header(Set-Cookie,${cookie_key}=cookie_value_3;Path=/common/dispatcher)`; + const this_token = token(); + send(credentialless_iframe, ` + const next_cookie_value = nextCookieValue(); + const iframe = document.createElement("iframe"); + iframe.src = "${resource_url}"; + document.body.appendChild(iframe); + send("${this_token}", await next_cookie_value); + `); + + assert_equals(await receive(this_token), "cookie_value_3"); +}, "Set Cookie via navigation requests"); diff --git a/testing/web-platform/tests/html/anonymous-iframe/cookie.tentative.https.window.js b/testing/web-platform/tests/html/anonymous-iframe/cookie.tentative.https.window.js new file mode 100644 index 0000000000..d6889ae52d --- /dev/null +++ b/testing/web-platform/tests/html/anonymous-iframe/cookie.tentative.https.window.js @@ -0,0 +1,128 @@ +// META: script=/common/get-host-info.sub.js +// META: script=/common/utils.js +// META: script=/common/dispatcher/dispatcher.js +// META: script=/html/cross-origin-embedder-policy/credentialless/resources/common.js +// META: script=./resources/common.js + +const same_origin = get_host_info().HTTPS_ORIGIN; +const cross_origin = get_host_info().HTTPS_REMOTE_ORIGIN; +const cookie_key = "credentialless_iframe_load_cookie"; +const cookie_same_origin = "same_origin"; +const cookie_cross_origin = "cross_origin"; + +const cookieFromResource = async resource_token => { + let headers = JSON.parse(await receive(resource_token)); + return parseCookies(headers)[cookie_key]; +}; + +// Load a credentialless iframe, return the HTTP request cookies. +const cookieFromCredentiallessIframeRequest = async (iframe_origin) => { + const resource_token = token(); + let iframe = document.createElement("iframe"); + iframe.src = `${showRequestHeaders(iframe_origin, resource_token)}`; + iframe.credentialless = true; + document.body.appendChild(iframe); + return await cookieFromResource(resource_token); +}; + +// Load a resource `type` from the iframe with `document_token`, +// return the HTTP request cookies. +const cookieFromResourceInIframe = + async (document_token, resource_origin, type = "img") => { + const resource_token = token(); + send(document_token, ` + let el = document.createElement("${type}"); + el.src = "${showRequestHeaders(resource_origin, resource_token)}"; + document.body.appendChild(el); + `); + return await cookieFromResource(resource_token); +}; + +promise_test_parallel(async test => { + await Promise.all([ + setCookie(same_origin, cookie_key, cookie_same_origin), + setCookie(cross_origin, cookie_key, cookie_cross_origin), + ]); + + promise_test_parallel(async test => { + assert_equals( + await cookieFromCredentiallessIframeRequest(same_origin), + undefined + ); + }, "Credentialless same-origin iframe is loaded without credentials"); + + promise_test_parallel(async test => { + assert_equals( + await cookieFromCredentiallessIframeRequest(cross_origin), + undefined + ); + }, "Credentialless cross-origin iframe is loaded without credentials"); + + const iframe_same_origin = newIframeCredentialless(same_origin); + const iframe_cross_origin = newIframeCredentialless(cross_origin); + + promise_test_parallel(async test => { + assert_equals( + await cookieFromResourceInIframe(iframe_same_origin, same_origin), + undefined + ); + }, "same_origin credentialless iframe can't send same_origin credentials"); + + promise_test_parallel(async test => { + assert_equals( + await cookieFromResourceInIframe(iframe_same_origin, cross_origin), + undefined + ); + }, "same_origin credentialless iframe can't send cross_origin credentials"); + + promise_test_parallel(async test => { + assert_equals( + await cookieFromResourceInIframe(iframe_cross_origin, cross_origin), + undefined + ); + }, "cross_origin credentialless iframe can't send cross_origin credentials"); + + promise_test_parallel(async test => { + assert_equals( + await cookieFromResourceInIframe(iframe_cross_origin, same_origin), + undefined + ); + }, "cross_origin credentialless iframe can't send same_origin credentials"); + + promise_test_parallel(async test => { + assert_equals( + await cookieFromResourceInIframe(iframe_same_origin, same_origin, + "iframe"), + undefined + ); + }, "same_origin credentialless iframe can't send same_origin credentials " + + "on child iframe"); + + promise_test_parallel(async test => { + assert_equals( + await cookieFromResourceInIframe(iframe_same_origin, cross_origin, + "iframe"), + undefined + ); + }, "same_origin credentialless iframe can't send cross_origin credentials " + + "on child iframe"); + + promise_test_parallel(async test => { + assert_equals( + await cookieFromResourceInIframe(iframe_cross_origin, cross_origin, + "iframe"), + undefined + ); + }, "cross_origin credentialless iframe can't send cross_origin credentials " + + "on child iframe"); + + promise_test_parallel(async test => { + assert_equals( + await cookieFromResourceInIframe(iframe_cross_origin, same_origin, + "iframe"), + undefined + ); + }, "cross_origin credentialless iframe can't send same_origin credentials " + + "on child iframe"); + +}, "Setup") diff --git a/testing/web-platform/tests/html/anonymous-iframe/embedding.tentative.https.window.js b/testing/web-platform/tests/html/anonymous-iframe/embedding.tentative.https.window.js new file mode 100644 index 0000000000..8c5e2fa60f --- /dev/null +++ b/testing/web-platform/tests/html/anonymous-iframe/embedding.tentative.https.window.js @@ -0,0 +1,124 @@ +// META: variant=?1-1 +// META: variant=?2-2 +// META: variant=?3-3 +// META: variant=?4-4 +// META: variant=?5-5 +// META: variant=?6-6 +// META: variant=?7-7 +// META: variant=?8-8 +// META: variant=?9-9 +// META: variant=?10-10 +// META: variant=?11-11 +// META: variant=?12-12 +// META: variant=?13-last +// META: timeout=long +// META: script=/common/get-host-info.sub.js +// META: script=/common/utils.js +// META: script=/common/subset-tests.js +// META: script=/common/dispatcher/dispatcher.js +// META: script=/html/cross-origin-embedder-policy/credentialless/resources/common.js +// META: script=./resources/common.js +// META: script=./resources/embedding-test.js + +const {REMOTE_ORIGIN} = get_host_info(); + +// variant = 1 +subsetTest(embeddingTest, + "Parent embeds same-origin credentialless iframe", { + expectation: EXPECT_LOAD, +}); + +// variant = 2 +subsetTest(embeddingTest, + "Parent embeds cross-origin credentialless iframe", { + child_origin: REMOTE_ORIGIN, + expectation: EXPECT_LOAD, +}); + +// variant = 3 +subsetTest(embeddingTest, + "COEP:require-corp parent embeds same-origin credentialless iframe", { + parent_headers: coep_require_corp, + expectation: EXPECT_LOAD, +}); + +// variant = 4 +subsetTest(embeddingTest, + "COEP:require-corp parent embeds cross-origin credentialless iframe", { + parent_headers: coep_require_corp, + child_origin: REMOTE_ORIGIN, + expectation: EXPECT_LOAD, +}); + +// variant = 5 +subsetTest(embeddingTest, + "COEP:credentialless parent embeds same-origin credentialless iframe", { + parent_headers: coep_credentialless, + expectation: EXPECT_LOAD, +}); + +// variant = 6 +subsetTest(embeddingTest, + "COEP:credentialless parent embeds cross-origin credentialless iframe", { + parent_headers: coep_credentialless, + child_origin: REMOTE_ORIGIN, + expectation: EXPECT_LOAD, +}); + +// variant = 7 +// Regression test for https://crbug.com/1314369 +subsetTest(embeddingTest, + "COOP:same-origin + COEP:require-corp embeds same-origin credentialless iframe", { + parent_headers: coop_same_origin + coep_require_corp, + expectation: EXPECT_LOAD, +}); + +// variant = 8 +// Regression test for https://crbug.com/1314369 +subsetTest(embeddingTest, + "COOP:same-origin + COEP:require-corp embeds cross-origin credentialless iframe", { + parent_headers: coop_same_origin + coep_require_corp, + child_origin: REMOTE_ORIGIN, + expectation: EXPECT_LOAD, +}); + +// variant = 9 +// Regression test for https://crbug.com/1314369 +subsetTest(embeddingTest, + "COOP:same-origin + COEP:credentialless embeds same-origin credentialless iframe", { + parent_headers: coop_same_origin + coep_credentialless, + expectation: EXPECT_LOAD, +}); + +// variant = 10 +// Regression test for https://crbug.com/1314369 +subsetTest(embeddingTest, + "COOP:same-origin + COEP:credentialless embeds cross-origin credentialless iframe", { + parent_headers: coop_same_origin + coep_credentialless, + child_origin: REMOTE_ORIGIN, + expectation: EXPECT_LOAD, +}); + +// variant = 11 +subsetTest(embeddingTest, + "Parents embeds a CSP:frame-ancestors credentialless iframe", { + child_headers: "|header(Content-Security-Policy,frame-ancestors 'none')", + expectation: EXPECT_BLOCK, +}); + +// variant = 12 +subsetTest(embeddingTest, + "Cross-Origin-Isolated parent embeds same-origin COEP credentialless iframe", { + parent_headers: coop_same_origin + coep_require_corp, + child_headers: coop_same_origin + coep_require_corp, + expectation: EXPECT_LOAD, +}); + +// variant = 13 +subsetTest(embeddingTest, + "Cross-Origin-Isolated parent embeds cross-origin COEP credentialless iframe", { + parent_headers: coop_same_origin + coep_require_corp, + child_headers: coop_same_origin + coep_require_corp, + child_origin: REMOTE_ORIGIN, + expectation: EXPECT_LOAD, +}); diff --git a/testing/web-platform/tests/html/anonymous-iframe/fenced-frame-bypass.tentative.https.window.js b/testing/web-platform/tests/html/anonymous-iframe/fenced-frame-bypass.tentative.https.window.js new file mode 100644 index 0000000000..354abffb9c --- /dev/null +++ b/testing/web-platform/tests/html/anonymous-iframe/fenced-frame-bypass.tentative.https.window.js @@ -0,0 +1,63 @@ +// META: script=/common/get-host-info.sub.js +// META: script=/common/utils.js +// META: script=/common/dispatcher/dispatcher.js +// META: script=/html/cross-origin-embedder-policy/credentialless/resources/common.js +// META: script=./resources/common.js +// META: timeout=long + +setup(() => { + assert_implements(window.HTMLFencedFrameElement, + "HTMLFencedFrameElement is not supported."); +}) + +// 4 actors: +// A (this document) +// ┌─────────────────────┴───────┐ +// ┌─┼────────────────────────┐ D (credentialless-iframe) +// │ B (fenced-frame) │ +// │ │ │ +// │ C (credentialless-iframe)│ +// └──────────────────────────┘ +// +// This test whether the two credentialless iframe can communicate and bypass the +// fencedframe boundary. This shouldn't happen. +promise_test(async test => { + const cross_origin = get_host_info().HTTPS_REMOTE_ORIGIN; + const msg_queue = token(); + + // Create the the 3 actors. + const iframe_credentialless_1 = newIframeCredentialless(cross_origin); + const fenced_frame = newFencedFrame(cross_origin); + send(fenced_frame, ` + const importScript = ${importScript}; + await importScript("/common/utils.js"); + await importScript("/html/cross-origin-embedder-policy/credentialless" + + "/resources/common.js"); + await importScript("/html/anonymous-iframe/resources/common.js"); + const support_loading_mode_fenced_frame = + "|header(Supports-Loading-Mode,fenced-frame)"; + const iframe_credentialless_2 = newIframeCredentialless("${cross_origin}", + support_loading_mode_fenced_frame); + send("${msg_queue}", iframe_credentialless_2); + `); + const iframe_credentialless_2 = await receive(msg_queue); + + // Try to communicate using BroadCastChannel, in between the credentialless + // iframes. + const bc_key = token(); + send(iframe_credentialless_1, ` + const bc = new BroadcastChannel("${bc_key}"); + bc.onmessage = event => send("${msg_queue}", event.data); + send("${msg_queue}", "BroadcastChannel registered"); + `); + assert_equals(await receive(msg_queue), "BroadcastChannel registered"); + await send(iframe_credentialless_2, ` + const bc = new BroadcastChannel("${bc_key}"); + bc.postMessage("Can communicate"); + `); + test.step_timeout(() => { + send(msg_queue, "Cannot communicate"); + }, 4000); + + assert_equals(await receive(msg_queue), "Cannot communicate"); +}) diff --git a/testing/web-platform/tests/html/anonymous-iframe/fenced-frame.tentative.https.window.js b/testing/web-platform/tests/html/anonymous-iframe/fenced-frame.tentative.https.window.js new file mode 100644 index 0000000000..675c136606 --- /dev/null +++ b/testing/web-platform/tests/html/anonymous-iframe/fenced-frame.tentative.https.window.js @@ -0,0 +1,40 @@ +// META: script=/common/get-host-info.sub.js +// META: script=/common/utils.js +// META: script=/common/dispatcher/dispatcher.js +// META: script=/html/cross-origin-embedder-policy/credentialless/resources/common.js +// META: script=./resources/common.js +// META: timeout=long + +setup(() => { + assert_implements(window.HTMLFencedFrameElement, + "HTMLFencedFrameElement is not supported."); +}) + +// Check whether this credentialless bit propagates toward FencedFrame. It +// shouldn't. +promise_test(async test => { + const origin = get_host_info().HTTPS_ORIGIN; + const msg_queue = token(); + + // 1. Create a credentialless iframe. + const iframe_credentialless = newIframeCredentialless(origin); + + // 2. Create a FencedFrame within it. + send(iframe_credentialless, ` + const importScript = ${importScript}; + await importScript("/common/utils.js"); + await importScript("/html/cross-origin-embedder-policy/credentialless" + + "/resources/common.js"); + await importScript("/html/anonymous-iframe/resources/common.js"); + const frame_fenced = newFencedFrame("${origin}"); + send("${msg_queue}", frame_fenced); + `); + const frame_fenced = await receive(msg_queue); + + // 3. Expect it not to be considered credentialless. + send(frame_fenced, ` + send("${msg_queue}", window.credentialless); + `); + assert_equals(await receive(msg_queue), "false", + "Check window.credentialless in FencedFrame"); +}, 'FencedFrame within a credentialless iframe is not credentialless') diff --git a/testing/web-platform/tests/html/anonymous-iframe/indexeddb.tentative.https.window.js b/testing/web-platform/tests/html/anonymous-iframe/indexeddb.tentative.https.window.js new file mode 100644 index 0000000000..d2749c6be2 --- /dev/null +++ b/testing/web-platform/tests/html/anonymous-iframe/indexeddb.tentative.https.window.js @@ -0,0 +1,104 @@ +// META: timeout=long +// META: script=/common/get-host-info.sub.js +// META: script=/common/utils.js +// META: script=/common/dispatcher/dispatcher.js +// META: script=/html/cross-origin-embedder-policy/credentialless/resources/common.js +// META: script=./resources/common.js + +// "token()" is used to get unique value for every execution of the test. This +// avoids potential side effects of one run toward the second. +const g_db_store = token(); +const g_db_name = token(); +const g_db_version = 1; + +// A script storing "|id|=|value|" in IndexedDB. +const write_script = (id, value, done) => ` + // Open the database: + const request = indexedDB.open("${g_db_name}", "${g_db_version}"); + request.onupgradeneeded = () => { + request.result.createObjectStore("${g_db_store}", {keyPath: "id"}); + }; + await new Promise(r => request.onsuccess = r); + const db = request.result; + + // Write the value: + const transaction_write = db.transaction("${g_db_store}", "readwrite"); + transaction_write.objectStore("${g_db_store}").add({ + id: "${id}", + value: "${value}", + }); + await transaction_write.complete; + + db.close(); + send("${done}", "Done"); +`; + +// A script retrieving what was stored inside IndexedDB. +const read_script = (done) => ` + // Open the database: + const request = indexedDB.open("${g_db_name}", "${g_db_version}"); + await new Promise(r => request.onsuccess = r); + const db = request.result; + + // Read: + const transaction_read = db.transaction("${g_db_store}", "readonly"); + const get_all = transaction_read.objectStore("${g_db_store}").getAll(); + await new Promise(r => transaction_read.oncomplete = r); + + db.close(); + send("${done}", JSON.stringify(get_all.result)); +`; + +promise_test(async test => { + // 4 actors: 2 credentialless iframe and 2 normal iframe. + const origin = get_host_info().HTTPS_REMOTE_ORIGIN; + const iframes = [ + newIframeCredentialless(origin), + newIframeCredentialless(origin), + newIframe(origin), + newIframe(origin), + ]; + + // 1. Write a different key-value pair from the iframes in IndexedDB: + const keys = iframes.map(token); + const values = iframes.map(token); + const response_queues = iframes.map(token); + await Promise.all(iframes.map(async (_, i) => { + send(iframes[i], write_script(keys[i], values[i], response_queues[i])); + assert_equals(await receive(response_queues[i]), "Done"); + })); + + // 2. Read the state from every iframes: + const states = await Promise.all(iframes.map(async (_, i) => { + send(iframes[i], read_script(response_queues[i])); + const reply = JSON.parse(await receive(response_queues[i])); + + const state = {} + for(entry of reply) + state[entry.id] = entry.value; + return state; + })); + + + // Verify the two credentialless iframe share the same state and the normal + // iframe share a second state + assert_equals(states[0][keys[0]], values[0]); + assert_equals(states[0][keys[1]], values[1]); + assert_equals(states[0][keys[2]], undefined); + assert_equals(states[0][keys[3]], undefined); + + assert_equals(states[1][keys[0]], values[0]); + assert_equals(states[1][keys[1]], values[1]); + assert_equals(states[1][keys[2]], undefined); + assert_equals(states[1][keys[3]], undefined); + + assert_equals(states[2][keys[0]], undefined); + assert_equals(states[2][keys[1]], undefined); + assert_equals(states[2][keys[2]], values[2]); + assert_equals(states[2][keys[3]], values[3]); + + assert_equals(states[3][keys[0]], undefined); + assert_equals(states[3][keys[1]], undefined); + assert_equals(states[3][keys[2]], values[2]); + assert_equals(states[3][keys[3]], values[3]); +}) diff --git a/testing/web-platform/tests/html/anonymous-iframe/initial-empty-document.tentative.https.window.js b/testing/web-platform/tests/html/anonymous-iframe/initial-empty-document.tentative.https.window.js new file mode 100644 index 0000000000..8d8b095588 --- /dev/null +++ b/testing/web-platform/tests/html/anonymous-iframe/initial-empty-document.tentative.https.window.js @@ -0,0 +1,34 @@ +// META: script=/common/get-host-info.sub.js +// META: script=/html/cross-origin-embedder-policy/credentialless/resources/common.js + +const {ORIGIN} = get_host_info(); + +promise_test_parallel(async t => { + const parent = document.createElement("iframe"); + parent.credentialless = true; + document.body.appendChild(parent); + parent.src = ORIGIN + "/common/blank.html"; + // Wait for navigation to complete. + await new Promise(resolve => parent.onload = resolve); + assert_true(parent.credentialless); + + const child = document.createElement("iframe"); + parent.contentDocument.body.appendChild(child); + assert_false(child.credentialless); + assert_true(child.contentWindow.credentialless); +}, "Initial empty document inherits from parent's document."); + +promise_test_parallel(async t => { + const parent = document.createElement("iframe"); + document.body.appendChild(parent); + parent.src = ORIGIN + "/common/blank.html"; + // Wait for navigation to complete. + await new Promise(resolve => parent.onload = resolve); + assert_false(parent.credentialless); + + const child = document.createElement("iframe"); + child.credentialless = true; + parent.contentDocument.body.appendChild(child); + assert_true(child.credentialless); + assert_true(child.contentWindow.credentialless); +}, "Initial empty document inherits from its's iframe's credentialless attribute."); diff --git a/testing/web-platform/tests/html/anonymous-iframe/local-storage-initial-empty-document.tentative.https.window.js b/testing/web-platform/tests/html/anonymous-iframe/local-storage-initial-empty-document.tentative.https.window.js new file mode 100644 index 0000000000..37678ff12b --- /dev/null +++ b/testing/web-platform/tests/html/anonymous-iframe/local-storage-initial-empty-document.tentative.https.window.js @@ -0,0 +1,74 @@ +// META: script=/common/get-host-info.sub.js +// META: script=/common/utils.js +// META: script=/common/dispatcher/dispatcher.js +// META: script=/html/cross-origin-embedder-policy/credentialless/resources/common.js +// META: script=./resources/common.js + +// This test verifies the behavior of the initial empty document nested inside +// credentialless iframes. +// +// The following tree of frames and documents is used: +// A +// ├──B (credentialless) +// │ └──D (initial empty document) +// └──C (control) +// └──E (initial empty document) +// +// Storage used for D and E must be different. +promise_test(async test => { + const iframe_B = newIframeCredentialless(origin); + const iframe_C = newIframe(origin); + + // Create iframe_D and store a value in localStorage. + const key_D = token(); + const value_D = "value_D"; + const queue_B = token(); + send(iframe_B, ` + const iframe_D = document.createElement("iframe"); + document.body.appendChild(iframe_D); + iframe_D.contentWindow.localStorage.setItem("${key_D}","${value_D}"); + send("${queue_B}", "Done"); + `); + + // Create iframe_E and store a value in localStorage. + const key_E = token(); + const value_E = "value_E"; + const queue_C = token(); + send(iframe_C, ` + const iframe_E = document.createElement("iframe"); + document.body.appendChild(iframe_E); + iframe_E.contentWindow.localStorage.setItem("${key_E}","${value_E}"); + send("${queue_C}", "Done"); + `); + + assert_equals(await receive(queue_B), "Done"); + assert_equals(await receive(queue_C), "Done"); + + // Try to load both values from both contexts: + send(iframe_B, ` + const iframe_D = document.querySelector("iframe"); + const value_D = iframe_D.contentWindow.localStorage.getItem("${key_D}"); + const value_E = iframe_D.contentWindow.localStorage.getItem("${key_E}"); + send("${queue_B}", value_D); + send("${queue_B}", value_E); + `); + send(iframe_C, ` + const iframe_E = document.querySelector("iframe"); + const value_D = iframe_E.contentWindow.localStorage.getItem("${key_D}"); + const value_E = iframe_E.contentWindow.localStorage.getItem("${key_E}"); + send("${queue_C}", value_D); + send("${queue_C}", value_E); + `); + + // Verify the credentialless iframe and the normal one do not have access to + // each other. + assert_equals(await receive(queue_B), value_D, // key_D + "Credentialless iframe can access credentialless context"); + assert_equals(await receive(queue_B), "", // key_E + "Credentialless iframe can't access credentialled context"); + assert_equals(await receive(queue_C), "", // key_D + "Credentialled iframe can't access credentialless context"); + assert_equals(await receive(queue_C), value_E, // key_E + "Credentialled iframe can access credentialled context"); +}, "Local storage is correctly partitioned with regards to credentialless " + + "iframe in initial empty documents."); diff --git a/testing/web-platform/tests/html/anonymous-iframe/local-storage.tentative.https.window.js b/testing/web-platform/tests/html/anonymous-iframe/local-storage.tentative.https.window.js new file mode 100644 index 0000000000..bd80ff4729 --- /dev/null +++ b/testing/web-platform/tests/html/anonymous-iframe/local-storage.tentative.https.window.js @@ -0,0 +1,57 @@ +// META: script=/common/get-host-info.sub.js +// META: script=/common/utils.js +// META: script=/common/dispatcher/dispatcher.js +// META: script=/html/cross-origin-embedder-policy/credentialless/resources/common.js +// META: script=./resources/common.js + +// Make |iframe| to store |key|=|value| into LocalStorage. +const store = async (iframe, key, value) => { + const response_queue = token(); + send(iframe, ` + localStorage.setItem("${key}", "${value}"); + send("${response_queue}", "stored"); + `); + assert_equals(await receive(response_queue), "stored"); +}; + +// Make |iframe| to load |key| in LocalStorage. Check it matches the +// |expected_value|. +const load = async (iframe, key, expected_value) => { + const response_queue = token(); + send(iframe, ` + const value = localStorage.getItem("${key}"); + send("${response_queue}", value || "not found"); + `); + assert_equals(await receive(response_queue), expected_value); +}; + +promise_test(async test => { + const origin = get_host_info().HTTPS_REMOTE_ORIGIN; + const key_1 = token(); + const key_2 = token(); + + // 4 actors: 2 credentialless iframe and 2 normal iframe. + const iframe_credentialless_1 = newIframeCredentialless(origin); + const iframe_credentialless_2 = newIframeCredentialless(origin); + const iframe_normal_1 = newIframe(origin); + const iframe_normal_2 = newIframe(origin); + + // 1. Store a value in one credentialless iframe and one normal iframe. + await Promise.all([ + store(iframe_credentialless_1, key_1, "value_1"), + store(iframe_normal_1, key_2, "value_2"), + ]); + + // 2. Check what each of them can retrieve. + await Promise.all([ + load(iframe_credentialless_1, key_1, "value_1"), + load(iframe_credentialless_2, key_1, "value_1"), + load(iframe_credentialless_1, key_2, "not found"), + load(iframe_credentialless_2, key_2, "not found"), + + load(iframe_normal_1, key_1, "not found"), + load(iframe_normal_2, key_1, "not found"), + load(iframe_normal_1, key_2, "value_2"), + load(iframe_normal_2, key_2, "value_2"), + ]); +}, "Local storage is correctly partitioned with regards to credentialless iframe"); diff --git a/testing/web-platform/tests/html/anonymous-iframe/require-corp-embed-anonymous-iframe.tentative.https.window.js b/testing/web-platform/tests/html/anonymous-iframe/require-corp-embed-anonymous-iframe.tentative.https.window.js new file mode 100644 index 0000000000..ccaa41f9ef --- /dev/null +++ b/testing/web-platform/tests/html/anonymous-iframe/require-corp-embed-anonymous-iframe.tentative.https.window.js @@ -0,0 +1,49 @@ +// META: script=/common/utils.js + +promise_test(async t => { + let iframe_allowed = (iframe) => new Promise(async resolve => { + window.addEventListener("message", t.step_func(msg => { + if (msg.source !== iframe.contentWindow) return; + assert_equals(msg.data, "loaded", + "Unexpected message from broadcast channel."); + resolve(true); + })); + + // To see whether the iframe was blocked, we check whether it + // becomes cross-origin (since error pages are loaded cross-origin). + await t.step_wait(() => { + try { + // Accessing contentWindow.location.href cross-origin throws. + iframe.contentWindow.location.href === null; + return false; + } catch { + return true; + } + }); + resolve(false); + }); + + // Create a credentialless child iframe. + const child = document.createElement("iframe"); + child.credentialless = true; + t.add_cleanup(() => child.remove()); + + child.src = "/html/cross-origin-embedder-policy/resources/" + + "navigate-none.sub.html?postMessageTo=top"; + document.body.append(child); + + assert_true(await iframe_allowed(child), + "The credentialless iframe should be allowed."); + + // Create a child of the credentialless iframe. Even if the grandchild + // does not have the 'credentialless' attribute set, it inherits the + // credentialless property from the parent. + const grandchild = child.contentDocument.createElement("iframe"); + + grandchild.src = "/html/cross-origin-embedder-policy/resources/" + + "navigate-none.sub.html?postMessageTo=top"; + child.contentDocument.body.append(grandchild); + + assert_true(await iframe_allowed(grandchild), + "The child of the credentialless iframe should be allowed."); +}, 'Loading a credentialless iframe with COEP: require-corp is allowed.'); diff --git a/testing/web-platform/tests/html/anonymous-iframe/require-corp-embed-anonymous-iframe.tentative.https.window.js.headers b/testing/web-platform/tests/html/anonymous-iframe/require-corp-embed-anonymous-iframe.tentative.https.window.js.headers new file mode 100644 index 0000000000..6604450991 --- /dev/null +++ b/testing/web-platform/tests/html/anonymous-iframe/require-corp-embed-anonymous-iframe.tentative.https.window.js.headers @@ -0,0 +1 @@ +Cross-Origin-Embedder-Policy: require-corp diff --git a/testing/web-platform/tests/html/anonymous-iframe/resources/common.js b/testing/web-platform/tests/html/anonymous-iframe/resources/common.js new file mode 100644 index 0000000000..241df1df24 --- /dev/null +++ b/testing/web-platform/tests/html/anonymous-iframe/resources/common.js @@ -0,0 +1,56 @@ +// Create a credentialless iframe. The new document will execute any scripts +// sent toward the token it returns. +const newIframeCredentialless = (child_origin, opt_headers) => { + opt_headers ||= ""; + const sub_document_token = token(); + let iframe = document.createElement('iframe'); + iframe.src = child_origin + executor_path + opt_headers + + `&uuid=${sub_document_token}`; + iframe.credentialless = true; + document.body.appendChild(iframe); + return sub_document_token; +}; + +// Create a normal iframe. The new document will execute any scripts sent +// toward the token it returns. +const newIframe = (child_origin) => { + const sub_document_token = token(); + let iframe = document.createElement('iframe'); + iframe.src = child_origin + executor_path + `&uuid=${sub_document_token}`; + iframe.credentialless = false + document.body.appendChild(iframe); + return sub_document_token; +}; + +// Create a popup. The new document will execute any scripts sent toward the +// token it returns. +const newPopup = (test, origin) => { + const popup_token = token(); + const popup = window.open(origin + executor_path + `&uuid=${popup_token}`); + test.add_cleanup(() => popup.close()); + return popup_token; +} + +// Create a fenced frame. The new document will execute any scripts sent +// toward the token it returns. +const newFencedFrame = (child_origin) => { + const support_loading_mode_fenced_frame = + "|header(Supports-Loading-Mode,fenced-frame)"; + const sub_document_token = token(); + const fencedframe = document.createElement('fencedframe'); + const url = child_origin + executor_path + + support_loading_mode_fenced_frame + + `&uuid=${sub_document_token}`; + fencedframe.config = new FencedFrameConfig(url); + document.body.appendChild(fencedframe); + return sub_document_token; +}; + +const importScript = (url) => { + const script = document.createElement("script"); + script.type = "text/javascript"; + script.src = url; + const loaded = new Promise(resolve => script.onload = resolve); + document.body.appendChild(script); + return loaded; +} diff --git a/testing/web-platform/tests/html/anonymous-iframe/resources/embedding-test.js b/testing/web-platform/tests/html/anonymous-iframe/resources/embedding-test.js new file mode 100644 index 0000000000..fb5d11efa0 --- /dev/null +++ b/testing/web-platform/tests/html/anonymous-iframe/resources/embedding-test.js @@ -0,0 +1,72 @@ +// One document embeds another in an iframe. Both are loaded from the network. +// Check whether or not the child can load. + +// There are no interoperable ways to check an iframe failed to load. So a +// timeout is being used. See https://github.com/whatwg/html/issues/125 +// Moreover, we want to track progress, managing timeout explicitly allows to +// get a per-test results, even in case of failure of one. +setup({ explicit_timeout: true }); + +const EXPECT_LOAD = "load"; +const EXPECT_BLOCK = "block"; + +// Load a credentialless iframe. Control both the parent and the child headers. +// Check whether it loaded or not. +const embeddingTest = (description, { + parent_headers, + child_headers, + child_origin, + expectation, +}) => { + // Default values: + child_origin ||= globalThis.origin; + parent_headers ||= ""; + child_headers||= ""; + + const parent_origin = window.origin; + + promise_test_parallel(async test => { + const parent_token = token(); + const parent_url = parent_origin + executor_path + parent_headers + + `&uuid=${parent_token}`; + + const child_token = token(); + const child_url = child_origin + executor_path + child_headers + + `&uuid=${child_token}`; + + // Create the parent: + window.open(parent_url); + add_completion_callback(() => send(parent_token, "close()")); + + // The parent creates its child: + await send(parent_token, ` + const iframe = document.createElement("iframe"); + iframe.credentialless = true; + iframe.src = "${child_url}"; + document.body.appendChild(iframe); + `); + + // Ping the child to know whether it was allowed to load or not: + const reply_token = token(); + await send(child_token, ` + send("${reply_token}", "load"); + `); + + // There are no interoperable ways to check an iframe failed to load. So a + // timeout is being used. + // See https://github.com/whatwg/html/issues/125 + // Use a shorter timeout when it is expected to be reached. + // - The long delay reduces the false-positive rate. False-positive causes + // stability problems on bot, so a big delay is used to vanish them. + // https://crbug.com/1215956. + // - The short delay avoids delaying too much the test(s) for nothing and + // timing out. False-negative are not a problem, they just need not to + // overwhelm the true-negative, which is trivial to get. + step_timeout(() => send(reply_token, "block"), expectation == EXPECT_BLOCK + ? 1500 + : 3500 + ); + + assert_equals(await receive(reply_token), expectation); + }, description); +}; diff --git a/testing/web-platform/tests/html/anonymous-iframe/resources/serviceworker-partitioning-helper.js b/testing/web-platform/tests/html/anonymous-iframe/resources/serviceworker-partitioning-helper.js new file mode 100644 index 0000000000..288ad5954e --- /dev/null +++ b/testing/web-platform/tests/html/anonymous-iframe/resources/serviceworker-partitioning-helper.js @@ -0,0 +1,16 @@ +let messages = {}; +let ports = {}; + +self.addEventListener("message", e => { + const from = e.data.from; + const check = e.data.check; + + if (from) { + messages[from] = true; + ports[from] = e.ports[0]; + } + + if (check) { + ports[check].postMessage(messages); + } +}); diff --git a/testing/web-platform/tests/html/anonymous-iframe/resources/sharedworker-partitioning-helper.js b/testing/web-platform/tests/html/anonymous-iframe/resources/sharedworker-partitioning-helper.js new file mode 100644 index 0000000000..8b416c33d7 --- /dev/null +++ b/testing/web-platform/tests/html/anonymous-iframe/resources/sharedworker-partitioning-helper.js @@ -0,0 +1,21 @@ +let messages = {}; + +onconnect = function(e) { + let port = e.ports[0]; + + port.addEventListener('message', function(e) { + const action = e.data.action; + const from = e.data.from; + + if (action === 'record') { + messages[from] = true; + port.postMessage({ack: from}); + } + + if (action === 'retrieve') { + port.postMessage({ack: from, messages: messages}); + } + }); + + port.start(); +}; diff --git a/testing/web-platform/tests/html/anonymous-iframe/serviceworker-partitioning.tentative.https.window.js b/testing/web-platform/tests/html/anonymous-iframe/serviceworker-partitioning.tentative.https.window.js new file mode 100644 index 0000000000..14997a4754 --- /dev/null +++ b/testing/web-platform/tests/html/anonymous-iframe/serviceworker-partitioning.tentative.https.window.js @@ -0,0 +1,85 @@ +// META: script=/common/utils.js + +const sw_url = location.pathname.replace(/[^/]*$/, '') + + "./resources/serviceworker-partitioning-helper.js"; + +promise_test(async t => { + // Create 4 iframes (two normal and two credentialless ones) and register + // a serviceworker with the same scope and url in all of them. + // + // Registering the same service worker again with the same url and + // scope is a no-op. However, credentialless iframes get partitioned + // service workers, so we should have a total of 2 service workers + // at the end (one for the normal iframes and one for the credentialless + // ones). + let iframes = await Promise.all([ + { name: "normal", credentialless: false}, + { name: "normal_control", credentialless: false}, + { name: "credentialless", credentialless: true}, + { name: "credentialless_control", credentialless: true}, + ].map(async ({name, credentialless}) => { + + let iframe = await new Promise(resolve => { + let iframe = document.createElement('iframe'); + iframe.onload = () => resolve(iframe); + iframe.src = '/common/blank.html'; + if (credentialless) iframe.credentialless = true; + document.body.append(iframe); + }); + + let sw = await new Promise(resolve => { + iframe.contentWindow.navigator.serviceWorker.register(sw_url) + .then(r => { + add_completion_callback(_ => r.unregister()); + resolve(r.active || r.installing || r.waiting); + }); + }); + return { iframe: iframe, name: name, sw: sw }; + })); + + // Setup a MessageChannel for each pair (iframe, serviceworker). + // Ping each serviceworker telling him which iframe it belongs to. + iframes.forEach((iframe, i) => { + iframe.channel = new MessageChannel(); + iframe.sw.postMessage({ from: iframe.name }, [iframe.channel.port2]); + }); + + let msg_promises = iframes.map(iframe => new Promise(resolve => { + iframe.channel.port1.onmessage = event => resolve(event.data); + })); + + // Ping each (iframe, serviceworker) asking for which messages it got. + iframes.map(iframe => iframe.sw.postMessage({ check: iframe.name })); + + // Collect all replies. + let msgs = await Promise.all(msg_promises); + + // The "normal" iframe serviceworker belongs to the "normal" and the + // "normal_control" iframes. + assert_true(!!msgs[0]["normal"]); + assert_true(!!msgs[0]["normal_control"]); + assert_false(!!msgs[0]["credentialless"]); + assert_false(!!msgs[0]["credentialless_control"]); + + // The "normal_control" iframe shares the same serviceworker as the "normal" + // iframe. + assert_true(!!msgs[1]["normal"]); + assert_true(!!msgs[1]["normal_control"]); + assert_false(!!msgs[1]["credentialless"]); + assert_false(!!msgs[1]["credentialless_control"]); + + // The "credentialless" iframe serviceworker belongs to the "credentialless" + // and the "credentialless_control" iframes. + assert_false(!!msgs[2]["normal"]); + assert_false(!!msgs[2]["normal_control"]); + assert_true(!!msgs[2]["credentialless"]); + assert_true(!!msgs[2]["credentialless_control"]); + + // The "credentialless_control" iframe shares the same serviceworker as the + // "credentialless" iframe. + assert_false(!!msgs[3]["normal"]); + assert_false(!!msgs[3]["normal_control"]); + assert_true(!!msgs[3]["credentialless"]); + assert_true(!!msgs[3]["credentialless_control"]); + +}, "credentialless iframes get partitioned service workers."); diff --git a/testing/web-platform/tests/html/anonymous-iframe/session-storage.tentative.https.window.js b/testing/web-platform/tests/html/anonymous-iframe/session-storage.tentative.https.window.js new file mode 100644 index 0000000000..425886ce38 --- /dev/null +++ b/testing/web-platform/tests/html/anonymous-iframe/session-storage.tentative.https.window.js @@ -0,0 +1,57 @@ +// META: script=/common/get-host-info.sub.js +// META: script=/common/utils.js +// META: script=/common/dispatcher/dispatcher.js +// META: script=/html/cross-origin-embedder-policy/credentialless/resources/common.js +// META: script=./resources/common.js + +// Make |iframe| to store |key|=|value| into sessionStorage. +const store = async (iframe, key, value) => { + const response_queue = token(); + send(iframe, ` + sessionStorage.setItem("${key}", "${value}"); + send("${response_queue}", "stored"); + `); + assert_equals(await receive(response_queue), "stored"); +}; + +// Make |iframe| to load |key| in sessionStorage. Check it matches the +// |expected_value|. +const load = async (iframe, key, expected_value) => { + const response_queue = token(); + send(iframe, ` + const value = sessionStorage.getItem("${key}"); + send("${response_queue}", value || "not found"); + `); + assert_equals(await receive(response_queue), expected_value); +}; + +promise_test(async test => { + const origin = get_host_info().HTTPS_REMOTE_ORIGIN; + const key_1 = token(); + const key_2 = token(); + + // 4 actors: 2 credentialless iframe and 2 normal iframe. + const iframe_credentialless_1 = newIframeCredentialless(origin); + const iframe_credentialless_2 = newIframeCredentialless(origin); + const iframe_normal_1 = newIframe(origin); + const iframe_normal_2 = newIframe(origin); + + // 1. Store a value in one credentialless iframe and one normal iframe. + await Promise.all([ + store(iframe_credentialless_1, key_1, "value_1"), + store(iframe_normal_1, key_2, "value_2"), + ]); + + // 2. Check what each of them can retrieve. + await Promise.all([ + load(iframe_credentialless_1, key_1, "value_1"), + load(iframe_credentialless_2, key_1, "value_1"), + load(iframe_credentialless_1, key_2, "not found"), + load(iframe_credentialless_2, key_2, "not found"), + + load(iframe_normal_1, key_1, "not found"), + load(iframe_normal_2, key_1, "not found"), + load(iframe_normal_1, key_2, "value_2"), + load(iframe_normal_2, key_2, "value_2"), + ]); +}, "Session storage is correctly partitioned with regards to credentialless iframe"); diff --git a/testing/web-platform/tests/html/anonymous-iframe/sharedworker-partitioning.tentative.https.window.js b/testing/web-platform/tests/html/anonymous-iframe/sharedworker-partitioning.tentative.https.window.js new file mode 100644 index 0000000000..6c373ee490 --- /dev/null +++ b/testing/web-platform/tests/html/anonymous-iframe/sharedworker-partitioning.tentative.https.window.js @@ -0,0 +1,93 @@ +// META: script=/common/utils.js + +const sw_url = location.pathname.replace(/[^/]*$/, '') + + "./resources/sharedworker-partitioning-helper.js"; + +promise_test(async t => { + // Create 4 iframes (two normal and two credentialless ones) and create + // a shared worker with the same url in all of them. + // + // Creating the same shared worker again with the same url is a + // no-op. However, credentialless iframes get partitioned shared workers, + // so we should have a total of 2 shared workers at the end (one for + // the normal iframes and one for the credentialless ones). + let iframes = await Promise.all([ + { name: "normal", credentialless: false}, + { name: "normal_control", credentialless: false}, + { name: "credentialless", credentialless: true}, + { name: "credentialless_control", credentialless: true}, + ].map(async ({name, credentialless}) => { + + let iframe = await new Promise(resolve => { + let iframe = document.createElement('iframe'); + iframe.onload = () => resolve(iframe); + iframe.src = '/common/blank.html'; + if (credentialless) iframe.credentialless = true; + document.body.append(iframe); + }); + + let sw = new iframe.contentWindow.SharedWorker(sw_url); + return { iframe: iframe, name: name, sw: sw }; + })); + + // Ping each worker telling him which iframe it belongs to. + await Promise.all(iframes.map(iframe => { + iframe.sw.port.postMessage({ action: 'record', from: iframe.name}); + return new Promise(resolve => { + iframe.sw.port.onmessage = event => { + if (event.data.ack === iframe.name) resolve(); + } + }); + })); + + // Ping each (iframe, sharedworker) asking for which messages it got. + let msgs = await Promise.all(iframes.map(iframe => { + iframe.sw.port.postMessage({ action: 'retrieve', from: iframe.name }); + return new Promise(resolve => { + iframe.sw.port.onmessage = event => { + if (event.data.ack === iframe.name) resolve(event.data.messages); + } + }); + })); + + // The "normal" iframe sharedworker belongs to the "normal" and the + // "normal_control" iframes. + assert_true(!!msgs[0]["normal"] && + !!msgs[0]["normal_control"] && + !msgs[0]["credentialless"] && + !msgs[0]["credentialless_control"], + 'The "normal" iframe\'s sharedworker should return ' + + '{"normal": true, "normal_control": true}, ' + + 'but instead returned ' + JSON.stringify(msgs[0])); + + // The "normal_control" iframe shares the same sharedworker as the "normal" + // iframe. + assert_true(!!msgs[1]["normal"] && + !!msgs[1]["normal_control"] && + !msgs[1]["credentialless"] && + !msgs[1]["credentialless_control"], + 'The "normal_control" iframe\'s sharedworker should return ' + + '{"normal": true, "normal_control": true}, ' + + 'but instead returned ' + JSON.stringify(msgs[1])); + + // The "credentialless" iframe sharedworker belongs to the "credentialless" and the + // "credentialless_control" iframes. + assert_true(!msgs[2]["normal"] && + !msgs[2]["normal_control"] && + !!msgs[2]["credentialless"] && + !!msgs[2]["credentialless_control"], + 'The "credentialless" iframe\'s sharedworker should return ' + + '{"credentialless": true, "credentialless_control": true}, ' + + 'but instead returned ' + JSON.stringify(msgs[2])); + + // The "credentialless_control" iframe shares the same sharedworker as + // the "credentialless" iframe. + assert_true(!msgs[3]["normal"] && + !msgs[3]["normal_control"] && + !!msgs[3]["credentialless"] && + !!msgs[3]["credentialless_control"], + 'The "credentialless_control" iframe\'s sharedworker should return ' + + '{"credentialless": true, "credentialless_control": true}, ' + + 'but instead returned ' + JSON.stringify(msgs[3])); + +}, "credentialless iframes get partitioned shared workers."); diff --git a/testing/web-platform/tests/html/anonymous-iframe/web-lock.tentative.https.window.js b/testing/web-platform/tests/html/anonymous-iframe/web-lock.tentative.https.window.js new file mode 100644 index 0000000000..fbee4ad28e --- /dev/null +++ b/testing/web-platform/tests/html/anonymous-iframe/web-lock.tentative.https.window.js @@ -0,0 +1,75 @@ +// META: script=/common/get-host-info.sub.js +// META: script=/common/utils.js +// META: script=/common/dispatcher/dispatcher.js +// META: script=/html/cross-origin-embedder-policy/credentialless/resources/common.js +// META: script=./resources/common.js + +// A script acquiring a lock. It can be released using window.releaseLocks +const acquire_script = (key, response) => ` + window.releaseLocks ||= []; + navigator.locks.request("${key}", async lock => { + send("${response}", "locked") + await new Promise(r => releaseLocks.push(r)); + send("${response}", "unlocked"); + }); +`; + +const release_script = (response) => ` + for (release of releaseLocks) + release(); +`; + +// Assert that |context| holds |expected_keys|. +const assertHeldKeys = async (context, expected_keys) => { + const queue = token(); + send(context, ` + const list = await navigator.locks.query(); + send("${queue}", JSON.stringify(list)); + `); + const state = JSON.parse(await receive(queue)); + const held = state.held.map(x => x.name); + assert_equals(held.length, expected_keys.length); + assert_array_equals(held.sort(), expected_keys.sort()); +} + +promise_test(async test => { + const origin = get_host_info().HTTPS_REMOTE_ORIGIN; + const key_1 = token(); + const key_2 = token(); + + // 2 actors: A credentialless iframe and a normal one. + const iframe_credentialless = newIframeCredentialless(origin); + const iframe_normal = newIframe(origin); + const response_queue_1 = token(); + const response_queue_2 = token(); + + // 1. Hold two different locks on both sides. + send(iframe_credentialless, acquire_script(key_1, response_queue_1)); + send(iframe_normal, acquire_script(key_2, response_queue_2)); + assert_equals(await receive(response_queue_1), "locked"); + assert_equals(await receive(response_queue_2), "locked"); + await assertHeldKeys(iframe_credentialless, [key_1]); + await assertHeldKeys(iframe_normal, [key_2]); + + // 2. Try to acquire the lock with the same key on the opposite side. It + // shouldn't block, because they are partitioned. + send(iframe_credentialless , acquire_script(key_2, response_queue_1)); + send(iframe_normal, acquire_script(key_1, response_queue_2)); + assert_equals(await receive(response_queue_1), "locked"); + assert_equals(await receive(response_queue_2), "locked"); + await assertHeldKeys(iframe_credentialless, [key_1, key_2]); + await assertHeldKeys(iframe_normal, [key_1, key_2]); + + // 3. Cleanup: release the 4 locks (2 on each sides). + send(iframe_credentialless, release_script(response_queue_1)); + assert_equals(await receive(response_queue_1), "unlocked"); + assert_equals(await receive(response_queue_1), "unlocked"); + await assertHeldKeys(iframe_credentialless, []); + await assertHeldKeys(iframe_normal, [key_1, key_2]); + + send(iframe_normal, release_script(response_queue_2)); + assert_equals(await receive(response_queue_2), "unlocked"); + assert_equals(await receive(response_queue_2), "unlocked"); + await assertHeldKeys(iframe_credentialless, []); + await assertHeldKeys(iframe_normal, []); +}) diff --git a/testing/web-platform/tests/html/anonymous-iframe/worker-cookies.tentative.https.window.js b/testing/web-platform/tests/html/anonymous-iframe/worker-cookies.tentative.https.window.js new file mode 100644 index 0000000000..8c25306baf --- /dev/null +++ b/testing/web-platform/tests/html/anonymous-iframe/worker-cookies.tentative.https.window.js @@ -0,0 +1,70 @@ +// META: timeout=long +// META: variant=?worker=dedicated_worker +// META: variant=?worker=shared_worker +// META: variant=?worker=service_worker +// META: script=/common/get-host-info.sub.js +// META: script=/common/utils.js +// META: script=/common/dispatcher/dispatcher.js +// META: script=/html/cross-origin-embedder-policy/credentialless/resources/common.js +// META: script=./resources/common.js + +// Execute the same set of tests for every type of worker. +// - DedicatedWorkers +// - SharedWorkers +// - ServiceWorkers. +const params = new URLSearchParams(document.location.search); +const worker_param = params.get("worker") || "dedicated_worker"; + +const cookie_key = token(); +const cookie_value = "cookie_value"; +const cookie_origin = get_host_info().HTTPS_REMOTE_ORIGIN; + +// Create worker spawned from `context` and return its uuid. +const workerFrom = context => { + const reply = token(); + send(context, ` + for(deps of [ + "/common/utils.js", + "/resources/testharness.js", + "/html/cross-origin-embedder-policy/credentialless/resources/common.js", + ]) { + await new Promise(resolve => { + const script = document.createElement("script"); + script.src = deps; + script.onload = resolve; + document.body.appendChild(script); + }); + } + + const worker_constructor = environments["${worker_param}"]; + const headers = ""; + const [worker, error] = worker_constructor(headers); + send("${reply}", worker); + `); + return receive(reply); +}; + +// Set a cookie from a top-level document. +promise_test(async test => { + await setCookie(cookie_origin, cookie_key, cookie_value); +}, "set cookies"); + +// Control: iframe is not credentialless. The worker can access cookies. +promise_test(async test => { + const headers = token(); + send(await workerFrom(newIframe(cookie_origin)), ` + fetch("${showRequestHeaders(cookie_origin, headers)}"); + `); + const cookie = parseCookies(JSON.parse(await receive(headers))); + assert_equals(cookie[cookie_key], cookie_value) +}, "Worker spawned from normal iframe can access global cookies"); + +// Experiment: iframe is credentialless. +promise_test(async test => { + const headers = token(); + send(await workerFrom(newIframeCredentialless(cookie_origin)), ` + fetch("${showRequestHeaders(cookie_origin, headers)}"); + `); + const cookie = parseCookies(JSON.parse(await receive(headers))); + assert_equals(cookie[cookie_key], undefined) +}, "Worker spawned from credentialless iframe can't access global cookies"); diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/back-forward-cache/README.md b/testing/web-platform/tests/html/browsers/browsing-the-web/back-forward-cache/README.md new file mode 100644 index 0000000000..5f10361d5c --- /dev/null +++ b/testing/web-platform/tests/html/browsers/browsing-the-web/back-forward-cache/README.md @@ -0,0 +1,52 @@ +# How to write back-forward cache tests + +In the back-forward cache tests, the main test HTML usually: + +1. Opens new executor Windows using `window.open()` + `noopener` option, + because less isolated Windows (e.g. iframes and `window.open()` without + `noopener` option) are often not eligible for back-forward cache (e.g. + in Chromium). +2. Injects scripts to the executor Windows and receives the results via + `RemoteContext.execute_script()` by + [/common/dispatcher](../../../../common/dispatcher/README.md). + Follow the semantics and guideline described there. + +Back-forward cache specific helpers are in: + +- [resources/executor.html](resources/executor.html): + The BFCache-specific executor and contains helpers for executors. +- [resources/helper.sub.js](resources/helper.sub.js): + Helpers for main test HTMLs. + +We must ensure that injected scripts are evaluated only after page load +(more precisely, the first `pageshow` event) and not during navigation, +to prevent unexpected interference between injected scripts, in-flight fetch +requests behind `RemoteContext.execute_script()`, navigation and back-forward +cache. To ensure this, + +- Call `await remoteContext.execute_script(waitForPageShow)` before any + other scripts are injected to the remote context, and +- Call `prepareNavigation(callback)` synchronously from the script injected + by `RemoteContext.execute_script()`, and trigger navigation on or after the + callback is called. + +In typical A-B-A scenarios (where we navigate from Page A to Page B and then +navigate back to Page A, assuming Page A is (or isn't) in BFCache), + +- Call `prepareNavigation()` on the executor, and then navigate to B, and then + navigate back to Page A. +- Call `assert_bfcached()` or `assert_not_bfcached()` on the main test HTML, to + check the BFCache status. This is important to do to ensure the test would + not fail normally and instead result in `PRECONDITION_FAILED` if the page is + unexpectedly bfcached/not bfcached. +- Check other test expectations on the main test HTML, + +as in [events.html](./events.html) and `runEventTest()` in +[resources/helper.sub.js](resources/helper.sub.js). + +# Asserting PRECONDITION_FAILED for unexpected BFCache eligibility + +To distinguish failures due to unexpected BFCache ineligibility (which might be +acceptable due to different BFCache eligibility criteria across browsers), +`assert_bfcached()` and `assert_not_bfcached()` results in +`PRECONDITION_FAILED` rather than ordinal failures. diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/back-forward-cache/eligibility/broadcast-channel.html b/testing/web-platform/tests/html/browsers/browsing-the-web/back-forward-cache/eligibility/broadcast-channel.html new file mode 100644 index 0000000000..bc04a5ed7f --- /dev/null +++ b/testing/web-platform/tests/html/browsers/browsing-the-web/back-forward-cache/eligibility/broadcast-channel.html @@ -0,0 +1,23 @@ + + + + + + + diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/back-forward-cache/eligibility/dedicated-worker.html b/testing/web-platform/tests/html/browsers/browsing-the-web/back-forward-cache/eligibility/dedicated-worker.html new file mode 100644 index 0000000000..b08588a8bd --- /dev/null +++ b/testing/web-platform/tests/html/browsers/browsing-the-web/back-forward-cache/eligibility/dedicated-worker.html @@ -0,0 +1,25 @@ + + + + + + + + diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/back-forward-cache/eligibility/inflight-fetch-1.html b/testing/web-platform/tests/html/browsers/browsing-the-web/back-forward-cache/eligibility/inflight-fetch-1.html new file mode 100644 index 0000000000..6a48d0657b --- /dev/null +++ b/testing/web-platform/tests/html/browsers/browsing-the-web/back-forward-cache/eligibility/inflight-fetch-1.html @@ -0,0 +1,18 @@ + + + + + + + + + diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/back-forward-cache/eligibility/inflight-fetch-2.html b/testing/web-platform/tests/html/browsers/browsing-the-web/back-forward-cache/eligibility/inflight-fetch-2.html new file mode 100644 index 0000000000..a767c4fa83 --- /dev/null +++ b/testing/web-platform/tests/html/browsers/browsing-the-web/back-forward-cache/eligibility/inflight-fetch-2.html @@ -0,0 +1,22 @@ + + + + + + + + + diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/back-forward-cache/eligibility/inflight-fetch-cors.html b/testing/web-platform/tests/html/browsers/browsing-the-web/back-forward-cache/eligibility/inflight-fetch-cors.html new file mode 100644 index 0000000000..c04089a5e2 --- /dev/null +++ b/testing/web-platform/tests/html/browsers/browsing-the-web/back-forward-cache/eligibility/inflight-fetch-cors.html @@ -0,0 +1,18 @@ + + + + + + + + + diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/back-forward-cache/eligibility/inflight-fetch-redirects.html b/testing/web-platform/tests/html/browsers/browsing-the-web/back-forward-cache/eligibility/inflight-fetch-redirects.html new file mode 100644 index 0000000000..b0b49d5f12 --- /dev/null +++ b/testing/web-platform/tests/html/browsers/browsing-the-web/back-forward-cache/eligibility/inflight-fetch-redirects.html @@ -0,0 +1,34 @@ + + + + + + + + + diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/back-forward-cache/eligibility/shared-worker.html b/testing/web-platform/tests/html/browsers/browsing-the-web/back-forward-cache/eligibility/shared-worker.html new file mode 100644 index 0000000000..77139fd08a --- /dev/null +++ b/testing/web-platform/tests/html/browsers/browsing-the-web/back-forward-cache/eligibility/shared-worker.html @@ -0,0 +1,25 @@ + + + + + + + + diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/back-forward-cache/events.html b/testing/web-platform/tests/html/browsers/browsing-the-web/back-forward-cache/events.html new file mode 100644 index 0000000000..4b1d3e408e --- /dev/null +++ b/testing/web-platform/tests/html/browsers/browsing-the-web/back-forward-cache/events.html @@ -0,0 +1,44 @@ + + + + + + + + diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/back-forward-cache/focus.html b/testing/web-platform/tests/html/browsers/browsing-the-web/back-forward-cache/focus.html new file mode 100644 index 0000000000..3901a5417d --- /dev/null +++ b/testing/web-platform/tests/html/browsers/browsing-the-web/back-forward-cache/focus.html @@ -0,0 +1,73 @@ + + + + + + + + + diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/back-forward-cache/pushstate.https.html b/testing/web-platform/tests/html/browsers/browsing-the-web/back-forward-cache/pushstate.https.html new file mode 100644 index 0000000000..218562254a --- /dev/null +++ b/testing/web-platform/tests/html/browsers/browsing-the-web/back-forward-cache/pushstate.https.html @@ -0,0 +1,63 @@ + + + + + + + + diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/back-forward-cache/resources/echo-worker.js b/testing/web-platform/tests/html/browsers/browsing-the-web/back-forward-cache/resources/echo-worker.js new file mode 100644 index 0000000000..3e3ecb52e9 --- /dev/null +++ b/testing/web-platform/tests/html/browsers/browsing-the-web/back-forward-cache/resources/echo-worker.js @@ -0,0 +1,16 @@ +// On receiving a message from the parent Document, send back a message to the +// parent Document. This is used to wait for worker initialization and test +// that this worker is alive and working. + +// For dedicated workers. +self.addEventListener('message', event => { + postMessage(event.data); +}); + +// For shared workers. +onconnect = e => { + const port = e.ports[0]; + port.onmessage = event => { + port.postMessage(event.data); + } +}; diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/back-forward-cache/resources/event-recorder.js b/testing/web-platform/tests/html/browsers/browsing-the-web/back-forward-cache/resources/event-recorder.js new file mode 100644 index 0000000000..469286a399 --- /dev/null +++ b/testing/web-platform/tests/html/browsers/browsing-the-web/back-forward-cache/resources/event-recorder.js @@ -0,0 +1,54 @@ +// Recording events + +const params = new URLSearchParams(window.location.search); +const uuid = params.get('uuid'); + +// The recorded events are stored in localStorage rather than global variables +// to catch events fired just before navigating out. +function getPushedItems(key) { + return JSON.parse(localStorage.getItem(key) || '[]'); +} + +function pushItem(key, value) { + const array = getPushedItems(key); + array.push(value); + localStorage.setItem(key, JSON.stringify(array)); +} + +window.recordEvent = function(eventName) { + pushItem(uuid + '.observedEvents', eventName); +} + +window.getRecordedEvents = function() { + return getPushedItems(uuid + '.observedEvents'); +} + +// Records events fired on `window` and `document`, with names listed in +// `eventNames`. +function startRecordingEvents(eventNames) { + for (const eventName of eventNames) { + window.addEventListener(eventName, event => { + let result = eventName; + if (event.persisted) { + result += '.persisted'; + } + if (eventName === 'visibilitychange') { + result += '.' + document.visibilityState; + } + recordEvent('window.' + result); + }); + document.addEventListener(eventName, () => { + let result = eventName; + if (eventName === 'visibilitychange') { + result += '.' + document.visibilityState; + } + recordEvent('document.' + result); + }); + } +} + +// When a comma-separated list of event names are given as the `events` +// parameter in the URL, start record the events of the given names. +if (params.get('events')) { + startRecordingEvents(params.get('events').split(',')); +} diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/back-forward-cache/resources/executor-pushstate.html b/testing/web-platform/tests/html/browsers/browsing-the-web/back-forward-cache/resources/executor-pushstate.html new file mode 100644 index 0000000000..dcf4a798d0 --- /dev/null +++ b/testing/web-platform/tests/html/browsers/browsing-the-web/back-forward-cache/resources/executor-pushstate.html @@ -0,0 +1,13 @@ + + + + + + diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/back-forward-cache/resources/executor.html b/testing/web-platform/tests/html/browsers/browsing-the-web/back-forward-cache/resources/executor.html new file mode 100644 index 0000000000..2d118bbe2b --- /dev/null +++ b/testing/web-platform/tests/html/browsers/browsing-the-web/back-forward-cache/resources/executor.html @@ -0,0 +1,5 @@ + + + + + diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/back-forward-cache/resources/executor.js b/testing/web-platform/tests/html/browsers/browsing-the-web/back-forward-cache/resources/executor.js new file mode 100644 index 0000000000..67ce068130 --- /dev/null +++ b/testing/web-platform/tests/html/browsers/browsing-the-web/back-forward-cache/resources/executor.js @@ -0,0 +1,64 @@ +const params = new URLSearchParams(window.location.search); +const uuid = params.get('uuid'); + +// Executor and BFCache detection + +// When navigating out from this page, always call +// `prepareNavigation(callback)` synchronously from the script injected by +// `RemoteContext.execute_script()`, and trigger navigation on or after the +// callback is called. +// prepareNavigation() suspends task polling and avoid in-flight fetch +// requests during navigation that might evict the page from BFCache. +// +// When we navigate to the page again, task polling is resumed, either +// - (BFCache cases) when the pageshow event listener added by +// prepareNavigation() is executed, or +// - (Non-BFCache cases) when `Executor.execute()` is called again during +// non-BFCache page loading. +// +// In such scenarios, `assert_bfcached()` etc. in `helper.sub.js` can determine +// whether the page is restored from BFCache or not, by observing +// - `isPageshowFired`: whether the pageshow event listener added by the +// prepareNavigation() before navigating out, and +// - `loadCount`: whether this inline script is evaluated again. +// - `isPageshowPersisted` is used to assert that `event.persisted` is true +// when restored from BFCache. + +window.isPageshowFired = false; +window.isPageshowPersisted = null; +window.loadCount = parseInt(localStorage.getItem(uuid + '.loadCount') || '0') + 1; +localStorage.setItem(uuid + '.loadCount', loadCount); + +window.pageShowPromise = new Promise(resolve => + window.addEventListener('pageshow', resolve, {once: true})); + +const executor = new Executor(uuid); + +window.prepareNavigation = function(callback) { + window.addEventListener( + 'pageshow', + (event) => { + window.isPageshowFired = true; + window.isPageshowPersisted = event.persisted; + executor.resume(); + }, + {once: true}); + executor.suspend(callback); +} + +// Try to disable BFCache by acquiring and never releasing a Web Lock. +// This requires HTTPS. +// Note: This is a workaround depending on non-specified WebLock+BFCache +// behavior, and doesn't work on Safari. We might want to introduce a +// test-only BFCache-disabling API instead in the future. +// https://github.com/web-platform-tests/wpt/issues/16359#issuecomment-795004780 +// https://crbug.com/1298336 +window.disableBFCache = () => { + return new Promise(resolve => { + // Use page's UUID as a unique lock name. + navigator.locks.request(uuid, () => { + resolve(); + return new Promise(() => {}); + }); + }); +}; diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/back-forward-cache/resources/helper.sub.js b/testing/web-platform/tests/html/browsers/browsing-the-web/back-forward-cache/resources/helper.sub.js new file mode 100644 index 0000000000..a1d18d108e --- /dev/null +++ b/testing/web-platform/tests/html/browsers/browsing-the-web/back-forward-cache/resources/helper.sub.js @@ -0,0 +1,229 @@ +// Helpers called on the main test HTMLs. +// Functions in `RemoteContext.execute_script()`'s 1st argument are evaluated +// on the executors (`executor.html`), and helpers available on the executors +// are defined in `executor.html`. + +const originSameOrigin = + location.protocol === 'http:' ? + 'http://{{host}}:{{ports[http][0]}}' : + 'https://{{host}}:{{ports[https][0]}}'; +const originSameSite = + location.protocol === 'http:' ? + 'http://{{host}}:{{ports[http][1]}}' : + 'https://{{host}}:{{ports[https][1]}}'; +const originCrossSite = + location.protocol === 'http:' ? + 'http://{{hosts[alt][www]}}:{{ports[http][0]}}' : + 'https://{{hosts[alt][www]}}:{{ports[https][0]}}'; + +const executorPath = + '/html/browsers/browsing-the-web/back-forward-cache/resources/executor.html?uuid='; + +// Asserts that the executor `target` is (or isn't, respectively) +// restored from BFCache. These should be used in the following fashion: +// 1. Call prepareNavigation() on the executor `target`. +// 2. Navigate the executor to another page. +// 3. Navigate back to the executor `target`. +// 4. Call assert_bfcached() or assert_not_bfcached() on the main test HTML. +async function assert_bfcached(target) { + const status = await getBFCachedStatus(target); + assert_implements_optional(status === 'BFCached', + "Could have been BFCached but actually wasn't"); +} + +async function assert_not_bfcached(target) { + const status = await getBFCachedStatus(target); + assert_implements(status !== 'BFCached', + 'Should not be BFCached but actually was'); +} + +async function getBFCachedStatus(target) { + const [loadCount, isPageshowFired, isPageshowPersisted] = + await target.execute_script(() => [ + window.loadCount, window.isPageshowFired, window.isPageshowPersisted]); + + if (loadCount === 1 && isPageshowFired === true && + isPageshowPersisted === true) { + return 'BFCached'; + } else if (loadCount === 2 && isPageshowFired === false) { + return 'Not BFCached'; + } else { + // This can occur for example when this is called before first navigating + // away (loadCount = 1, isPageshowFired = false), e.g. when + // 1. sending a script for navigation and then + // 2. calling getBFCachedStatus() without waiting for the completion of + // the script on the `target` page. + assert_unreached( + `Got unexpected BFCache status: loadCount = ${loadCount}, ` + + `isPageshowFired = ${isPageshowFired}, ` + + `isPageshowPersisted = ${isPageshowPersisted}`); + } +} + +// Always call `await remoteContext.execute_script(waitForPageShow);` after +// triggering to navigation to the page, to wait for pageshow event on the +// remote context. +const waitForPageShow = () => window.pageShowPromise; + +// Run a test that navigates A->B->A: +// 1. Page A is opened by `params.openFunc(url)`. +// 2. `params.funcBeforeNavigation(params.argsBeforeNavigation)` is executed +// on page A. +// 3. The window is navigated to page B on `params.targetOrigin`. +// 4. The window is back navigated to page A (expecting BFCached). +// +// Events `params.events` (an array of strings) are observed on page A and +// `params.expectedEvents` (an array of strings) is expected to be recorded. +// See `event-recorder.js` for event recording. +// +// Parameters can be omitted. See `defaultParams` below for default. +function runEventTest(params, description) { + const defaultParams = { + openFunc(url) { + window.open( + `${url}&events=${this.events.join(',')}`, + '_blank', + 'noopener' + ) + }, + events: ['pagehide', 'pageshow', 'load'], + expectedEvents: [ + 'window.load', + 'window.pageshow', + 'window.pagehide.persisted', + 'window.pageshow.persisted' + ], + async funcAfterAssertion(pageA) { + assert_array_equals( + await pageA.execute_script(() => getRecordedEvents()), + this.expectedEvents); + } + } + // Apply defaults. + params = { ...defaultParams, ...params }; + + runBfcacheTest(params, description); +} + +async function navigateAndThenBack(pageA, pageB, urlB, + funcBeforeBackNavigation, + argsBeforeBackNavigation) { + await pageA.execute_script( + (url) => { + prepareNavigation(() => { + location.href = url; + }); + }, + [urlB] + ); + + await pageB.execute_script(waitForPageShow); + if (funcBeforeBackNavigation) { + await pageB.execute_script(funcBeforeBackNavigation, + argsBeforeBackNavigation); + } + await pageB.execute_script( + () => { + prepareNavigation(() => { history.back(); }); + } + ); + + await pageA.execute_script(waitForPageShow); +} + +function runBfcacheTest(params, description) { + const defaultParams = { + openFunc: url => window.open(url, '_blank', 'noopener'), + scripts: [], + funcBeforeNavigation: () => {}, + argsBeforeNavigation: [], + targetOrigin: originCrossSite, + funcBeforeBackNavigation: () => {}, + argsBeforeBackNavigation: [], + shouldBeCached: true, + funcAfterAssertion: () => {}, + } + // Apply defaults. + params = {...defaultParams, ...params }; + + promise_test(async t => { + const pageA = new RemoteContext(token()); + const pageB = new RemoteContext(token()); + + const urlA = executorPath + pageA.context_id; + const urlB = params.targetOrigin + executorPath + pageB.context_id; + + // So that tests can refer to these URLs for assertions if necessary. + pageA.url = originSameOrigin + urlA; + pageB.url = urlB; + + params.openFunc(urlA); + + await pageA.execute_script(waitForPageShow); + + for (const src of params.scripts) { + await pageA.execute_script((src) => { + const script = document.createElement("script"); + script.src = src; + document.head.append(script); + return new Promise(resolve => script.onload = resolve); + }, [src]); + } + + await pageA.execute_script(params.funcBeforeNavigation, + params.argsBeforeNavigation); + await navigateAndThenBack(pageA, pageB, urlB, + params.funcBeforeBackNavigation, + params.argsBeforeBackNavigation); + + if (params.shouldBeCached) { + await assert_bfcached(pageA); + } else { + await assert_not_bfcached(pageA); + } + + if (params.funcAfterAssertion) { + await params.funcAfterAssertion(pageA, pageB, t); + } + }, description); +} + +// Call clients.claim() on the service worker +async function claim(t, worker) { + const channel = new MessageChannel(); + const saw_message = new Promise(function(resolve) { + channel.port1.onmessage = t.step_func(function(e) { + assert_equals(e.data, 'PASS', 'Worker call to claim() should fulfill.'); + resolve(); + }); + }); + worker.postMessage({type: "claim", port: channel.port2}, [channel.port2]); + await saw_message; +} + +// Assigns the current client to a local variable on the service worker. +async function storeClients(t, worker) { + const channel = new MessageChannel(); + const saw_message = new Promise(function(resolve) { + channel.port1.onmessage = t.step_func(function(e) { + assert_equals(e.data, 'PASS', 'storeClients'); + resolve(); + }); + }); + worker.postMessage({type: "storeClients", port: channel.port2}, [channel.port2]); + await saw_message; +} + +// Call storedClients.postMessage("") on the service worker +async function postMessageToStoredClients(t, worker) { + const channel = new MessageChannel(); + const saw_message = new Promise(function(resolve) { + channel.port1.onmessage = t.step_func(function(e) { + assert_equals(e.data, 'PASS', 'postMessageToStoredClients'); + resolve(); + }); + }); + worker.postMessage({type: "postMessageToStoredClients", + port: channel.port2}, [channel.port2]); + await saw_message; +} diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/back-forward-cache/resources/inflight-fetch-helper.js b/testing/web-platform/tests/html/browsers/browsing-the-web/back-forward-cache/resources/inflight-fetch-helper.js new file mode 100644 index 0000000000..7832003b76 --- /dev/null +++ b/testing/web-platform/tests/html/browsers/browsing-the-web/back-forward-cache/resources/inflight-fetch-helper.js @@ -0,0 +1,47 @@ +// Delay after fetch start: +// - 0.0 seconds: before BFCache +// - 2.0 seconds: when in BFCache +// - 3.5 seconds: after restored from BFCache +function runTest(urlToFetch, hasCSP, shouldSucceed, description) { + runBfcacheTest({ + funcBeforeNavigation: async (urlToFetch, hasCSP) => { + if (hasCSP) { + // Set CSP. + const meta = document.createElement('meta'); + meta.setAttribute('http-equiv', 'Content-Security-Policy'); + meta.setAttribute('content', "connect-src 'self'"); + document.head.appendChild(meta); + } + + // Initiate a `fetch()`. + window.fetchPromise = fetch(urlToFetch); + + // Wait for 0.5 seconds to receive response headers for the fetch() + // before BFCache, if any. + await new Promise(resolve => setTimeout(resolve, 500)); + }, + argsBeforeNavigation: [urlToFetch, hasCSP], + funcBeforeBackNavigation: () => { + // Wait for 2 seconds before back navigating to pageA. + return new Promise(resolve => setTimeout(resolve, 2000)); + }, + funcAfterAssertion: async (pageA, pageB, t) => { + // Wait for fetch() completion and check the result. + const result = pageA.execute_script( + () => window.fetchPromise.then(r => r.text())); + if (shouldSucceed) { + assert_equals( + await result, + 'Body', + 'Fetch should complete successfully after restored from BFCache'); + } else { + await promise_rejects_js(t, TypeError, result, + 'Fetch should fail after restored from BFCache'); + } + } + }, 'Eligibility (in-flight fetch): ' + description); +} + +const url = new URL('../resources/slow.py', location); +const sameOriginUrl = url.href; +const crossSiteUrl = originCrossSite + url.pathname; diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/back-forward-cache/resources/rc-helper.js b/testing/web-platform/tests/html/browsers/browsing-the-web/back-forward-cache/resources/rc-helper.js new file mode 100644 index 0000000000..53bcdccf7c --- /dev/null +++ b/testing/web-platform/tests/html/browsers/browsing-the-web/back-forward-cache/resources/rc-helper.js @@ -0,0 +1,103 @@ +// A collection of helper functions that make use of the `remoteContextHelper` +// to test BFCache support and behavior. + +// Call `prepareForBFCache()` before navigating away from the page. This simply +// sets a variable in window. +async function prepareForBFCache(remoteContextHelper) { + await remoteContextHelper.executeScript(() => { + window.beforeBFCache = true; + }); +} + +// Call `getBeforeCache()` after navigating back to the page. This returns the +// value in window. +async function getBeforeBFCache(remoteContextHelper) { + return await remoteContextHelper.executeScript(() => { + return window.beforeBFCache; + }); +} + +// If the value in window is set to true, this means that the page was reloaded, +// i.e., the page was restored from BFCache. +// Call `prepareForBFCache()` before navigating away to call this function. +async function assertImplementsBFCacheOptional(remoteContextHelper) { + var beforeBFCache = await getBeforeBFCache(remoteContextHelper); + assert_implements_optional(beforeBFCache == true, 'BFCache not supported.'); +} + +// A helper function to assert that the page is not restored from BFCache by +// checking whether the `beforeBFCache` value from `window` is undefined +// due to page reload. +// This function also takes an optional `notRestoredReasons` list which +// indicates the set of expected reasons that make the page not restored. +// If the reasons list is undefined, the check will be skipped. Otherwise +// this check will use the `notRestoredReasons` API, to obtain the reasons +// in a tree structure, and flatten the reasons before making the order- +// insensitive comparison. +// If the API is not available, the function will terminate instead of marking +// the assertion failed. +// Call `prepareForBFCache()` before navigating away to call this function. +async function assertNotRestoredFromBFCache( + remoteContextHelper, notRestoredReasons) { + var beforeBFCache = await getBeforeBFCache(remoteContextHelper); + assert_equals(beforeBFCache, undefined); + + // The reason is optional, so skip the remaining test if the + // `notRestoredReasons` is not set. + if (notRestoredReasons === undefined) { + return; + } + + let isFeatureEnabled = await remoteContextHelper.executeScript(() => { + return 'notRestoredReasons' in performance.getEntriesByType('navigation')[0]; + }); + + // Return if the `notRestoredReasons` API is not available. + if (!isFeatureEnabled) { + return; + } + + let result = await remoteContextHelper.executeScript(() => { + return performance.getEntriesByType('navigation')[0].notRestoredReasons; + }); + + let expectedNotRestoredReasonsSet = new Set(notRestoredReasons); + let notRestoredReasonsSet = new Set(); + + // Flatten the reasons from the main frame and all the child frames. + const collectReason = (node) => { + for (let reason of node.reasons) { + notRestoredReasonsSet.add(reason); + } + for (let child of node.children) { + collectReason(child); + } + } + collectReason(result); + + assert_equals(notRestoredReasonsSet.length, + expectedNotRestoredReasonsSet.length); + + for (let reason of expectedNotRestoredReasonsSet) { + assert_true(notRestoredReasonsSet.has(reason)); + } +} + +// A helper function that combines the steps of setting window property, +// navigating away and back, and making assertion on whether BFCache is +// supported. +// This function can be used to check if the current page is eligible for +// BFCache. +async function assertBFCacheEligibility( + remoteContextHelper, shouldRestoreFromBFCache) { + await prepareForBFCache(remoteContextHelper); + // Navigate away and back. + const newRemoteContextHelper = await remoteContextHelper.navigateToNew(); + await newRemoteContextHelper.historyBack(); + + if (shouldRestoreFromBFCache) { + await assertImplementsBFCacheOptional(remoteContextHelper); + } else { + await assertNotRestoredFromBFCache(remoteContextHelper); + } +} diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/back-forward-cache/resources/service-worker.js b/testing/web-platform/tests/html/browsers/browsing-the-web/back-forward-cache/resources/service-worker.js new file mode 100644 index 0000000000..df9ce65acd --- /dev/null +++ b/testing/web-platform/tests/html/browsers/browsing-the-web/back-forward-cache/resources/service-worker.js @@ -0,0 +1,44 @@ +self.addEventListener('message', function(event) { + if (event.data.type == "claim") { + self.clients.claim() + .then(function(result) { + if (result !== undefined) { + event.data.port.postMessage( + 'FAIL: claim() should be resolved with undefined'); + return; + } + event.data.port.postMessage('PASS'); + }) + .catch(function(error) { + event.data.port.postMessage('FAIL: exception: ' + error.name); + }); + } else if (event.data.type == "storeClients") { + self.clients.matchAll() + .then(function(result) { + self.storedClients = result; + event.data.port.postMessage("PASS"); + }); + } else if (event.data.type == "postMessageToStoredClients") { + for (let client of self.storedClients) { + client.postMessage("dummyValue"); + } + event.data.port.postMessage("PASS"); + } + }); + +self.addEventListener('fetch', e => { + if (e.request.url.match(/\/is-controlled/)) { + e.respondWith(new Response('controlled')); + } + else if (e.request.url.match(/\/get-clients-matchall/)) { + const options = { includeUncontrolled: true, type: 'all' }; + e.respondWith( + self.clients.matchAll(options) + .then(clients => { + const client_urls = []; + clients.forEach(client => client_urls.push(client.url)); + return new Response(JSON.stringify(client_urls)); + }) + ); + } + }); diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/back-forward-cache/resources/slow.py b/testing/web-platform/tests/html/browsers/browsing-the-web/back-forward-cache/resources/slow.py new file mode 100644 index 0000000000..01bb3309b1 --- /dev/null +++ b/testing/web-platform/tests/html/browsers/browsing-the-web/back-forward-cache/resources/slow.py @@ -0,0 +1,13 @@ +import time + +def main(request, response): + delay_before_header = float(request.GET.first(b"delayBeforeHeader", 0)) / 1000 + delay_before_body = float(request.GET.first(b"delayBeforeBody", 0)) / 1000 + + time.sleep(delay_before_header) + if b"cors" in request.GET: + response.headers.set(b"Access-Control-Allow-Origin", b"*") + response.write_status_headers() + + time.sleep(delay_before_body) + response.writer.write_content(b"Body") diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/back-forward-cache/resources/worker-helper.js b/testing/web-platform/tests/html/browsers/browsing-the-web/back-forward-cache/resources/worker-helper.js new file mode 100644 index 0000000000..d5f3a0c814 --- /dev/null +++ b/testing/web-platform/tests/html/browsers/browsing-the-web/back-forward-cache/resources/worker-helper.js @@ -0,0 +1,28 @@ +// Worker-related helper file to be used from executor.html. + +// The class `WorkerHelper` is exposed to `globalThis` because this should be +// used via `eval()`. +globalThis.WorkerHelper = class { + static pingWorker(worker) { + return new Promise((resolve, reject) => { + const message = 'message ' + Math.random(); + const onmessage = e => { + if (e.data === message) { + resolve('PASS'); + } else { + reject('pingWorker: expected ' + message + ' but got ' + e.data); + } + }; + worker.onerror = reject; + if (worker instanceof Worker) { + worker.addEventListener('message', onmessage, {once: true}); + worker.postMessage(message); + } else if (worker instanceof SharedWorker) { + worker.port.onmessage = onmessage; + worker.port.postMessage(message); + } else { + reject('Unexpected worker type'); + } + }); + } +}; diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/back-forward-cache/service-worker-client-postmessage.https.html b/testing/web-platform/tests/html/browsers/browsing-the-web/back-forward-cache/service-worker-client-postmessage.https.html new file mode 100644 index 0000000000..acc682a073 --- /dev/null +++ b/testing/web-platform/tests/html/browsers/browsing-the-web/back-forward-cache/service-worker-client-postmessage.https.html @@ -0,0 +1,71 @@ + + + + + + + + + diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/back-forward-cache/service-worker-clients-claim.https.html b/testing/web-platform/tests/html/browsers/browsing-the-web/back-forward-cache/service-worker-clients-claim.https.html new file mode 100644 index 0000000000..d9540c221b --- /dev/null +++ b/testing/web-platform/tests/html/browsers/browsing-the-web/back-forward-cache/service-worker-clients-claim.https.html @@ -0,0 +1,71 @@ + + + + + + + + + diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/back-forward-cache/service-worker-clients-matchall.https.html b/testing/web-platform/tests/html/browsers/browsing-the-web/back-forward-cache/service-worker-clients-matchall.https.html new file mode 100644 index 0000000000..069529dbe4 --- /dev/null +++ b/testing/web-platform/tests/html/browsers/browsing-the-web/back-forward-cache/service-worker-clients-matchall.https.html @@ -0,0 +1,76 @@ + + + + + + + + + diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/back-forward-cache/service-worker-controlled-after-restore.https.html b/testing/web-platform/tests/html/browsers/browsing-the-web/back-forward-cache/service-worker-controlled-after-restore.https.html new file mode 100644 index 0000000000..a937eb85ac --- /dev/null +++ b/testing/web-platform/tests/html/browsers/browsing-the-web/back-forward-cache/service-worker-controlled-after-restore.https.html @@ -0,0 +1,54 @@ + + + + + + + + + diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/back-forward-cache/service-worker-unregister.https.html b/testing/web-platform/tests/html/browsers/browsing-the-web/back-forward-cache/service-worker-unregister.https.html new file mode 100644 index 0000000000..1c3f81153c --- /dev/null +++ b/testing/web-platform/tests/html/browsers/browsing-the-web/back-forward-cache/service-worker-unregister.https.html @@ -0,0 +1,67 @@ + + + + + + + + + diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/back-forward-cache/storage-events.html b/testing/web-platform/tests/html/browsers/browsing-the-web/back-forward-cache/storage-events.html new file mode 100644 index 0000000000..6957496c30 --- /dev/null +++ b/testing/web-platform/tests/html/browsers/browsing-the-web/back-forward-cache/storage-events.html @@ -0,0 +1,101 @@ + + + + + + + + diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/back-forward-cache/timers.html b/testing/web-platform/tests/html/browsers/browsing-the-web/back-forward-cache/timers.html new file mode 100644 index 0000000000..aab650f36e --- /dev/null +++ b/testing/web-platform/tests/html/browsers/browsing-the-web/back-forward-cache/timers.html @@ -0,0 +1,68 @@ + + + + + + + + + diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/history-traversal/001-1.html b/testing/web-platform/tests/html/browsers/browsing-the-web/history-traversal/001-1.html new file mode 100644 index 0000000000..cadcf126f5 --- /dev/null +++ b/testing/web-platform/tests/html/browsers/browsing-the-web/history-traversal/001-1.html @@ -0,0 +1,11 @@ + +001-1 + diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/history-traversal/001-2.html b/testing/web-platform/tests/html/browsers/browsing-the-web/history-traversal/001-2.html new file mode 100644 index 0000000000..6387bc89c8 --- /dev/null +++ b/testing/web-platform/tests/html/browsers/browsing-the-web/history-traversal/001-2.html @@ -0,0 +1,5 @@ + +001-2 + diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/history-traversal/001.html b/testing/web-platform/tests/html/browsers/browsing-the-web/history-traversal/001.html new file mode 100644 index 0000000000..336ede4cb6 --- /dev/null +++ b/testing/web-platform/tests/html/browsers/browsing-the-web/history-traversal/001.html @@ -0,0 +1,35 @@ + +pageshow event from traversal + + +
+ + diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/history-traversal/PopStateEvent.html b/testing/web-platform/tests/html/browsers/browsing-the-web/history-traversal/PopStateEvent.html new file mode 100644 index 0000000000..5774c150f4 --- /dev/null +++ b/testing/web-platform/tests/html/browsers/browsing-the-web/history-traversal/PopStateEvent.html @@ -0,0 +1,38 @@ + + +Synthetic popstate events + + +
+ diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/history-traversal/api-availability.html b/testing/web-platform/tests/html/browsers/browsing-the-web/history-traversal/api-availability.html new file mode 100644 index 0000000000..2f7d3fafdf --- /dev/null +++ b/testing/web-platform/tests/html/browsers/browsing-the-web/history-traversal/api-availability.html @@ -0,0 +1,22 @@ + +API availability following history traversal + + + +

Test requires popup blocker disabled

+
+ diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/history-traversal/browsing_context_name-0.html b/testing/web-platform/tests/html/browsers/browsing-the-web/history-traversal/browsing_context_name-0.html new file mode 100644 index 0000000000..5cbab71a5e --- /dev/null +++ b/testing/web-platform/tests/html/browsers/browsing-the-web/history-traversal/browsing_context_name-0.html @@ -0,0 +1,35 @@ + + diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/history-traversal/browsing_context_name-1.html b/testing/web-platform/tests/html/browsers/browsing-the-web/history-traversal/browsing_context_name-1.html new file mode 100644 index 0000000000..85748a2ebc --- /dev/null +++ b/testing/web-platform/tests/html/browsers/browsing-the-web/history-traversal/browsing_context_name-1.html @@ -0,0 +1,6 @@ +document 1 + diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/history-traversal/browsing_context_name-2.html b/testing/web-platform/tests/html/browsers/browsing-the-web/history-traversal/browsing_context_name-2.html new file mode 100644 index 0000000000..b0c869046b --- /dev/null +++ b/testing/web-platform/tests/html/browsers/browsing-the-web/history-traversal/browsing_context_name-2.html @@ -0,0 +1,4 @@ +document 2 + diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/history-traversal/browsing_context_name-3.html b/testing/web-platform/tests/html/browsers/browsing-the-web/history-traversal/browsing_context_name-3.html new file mode 100644 index 0000000000..e0c239744f --- /dev/null +++ b/testing/web-platform/tests/html/browsers/browsing-the-web/history-traversal/browsing_context_name-3.html @@ -0,0 +1,6 @@ +document 3 + diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/history-traversal/browsing_context_name-4.html b/testing/web-platform/tests/html/browsers/browsing-the-web/history-traversal/browsing_context_name-4.html new file mode 100644 index 0000000000..5d2dfa6bb8 --- /dev/null +++ b/testing/web-platform/tests/html/browsers/browsing-the-web/history-traversal/browsing_context_name-4.html @@ -0,0 +1,6 @@ +document 4 + diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/history-traversal/browsing_context_name.html b/testing/web-platform/tests/html/browsers/browsing-the-web/history-traversal/browsing_context_name.html new file mode 100644 index 0000000000..60a8acb098 --- /dev/null +++ b/testing/web-platform/tests/html/browsers/browsing-the-web/history-traversal/browsing_context_name.html @@ -0,0 +1,13 @@ + +Retaining window.name on history traversal + + +

+
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/history-traversal/browsing_context_name_cross_origin-0.html b/testing/web-platform/tests/html/browsers/browsing-the-web/history-traversal/browsing_context_name_cross_origin-0.html
new file mode 100644
index 0000000000..9e91722714
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/history-traversal/browsing_context_name_cross_origin-0.html
@@ -0,0 +1,34 @@
+
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/history-traversal/browsing_context_name_cross_origin.html b/testing/web-platform/tests/html/browsers/browsing-the-web/history-traversal/browsing_context_name_cross_origin.html
new file mode 100644
index 0000000000..caa0bce3eb
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/history-traversal/browsing_context_name_cross_origin.html
@@ -0,0 +1,13 @@
+
+Restoring window.name on cross-origin history traversal
+
+
+

+
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/history-traversal/browsing_context_name_cross_origin_2.html b/testing/web-platform/tests/html/browsers/browsing-the-web/history-traversal/browsing_context_name_cross_origin_2.html
new file mode 100644
index 0000000000..8202a892a3
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/history-traversal/browsing_context_name_cross_origin_2.html
@@ -0,0 +1,43 @@
+
+Restoring window.name on cross-origin history traversal
+
+
+

+

+
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/history-traversal/browsing_context_name_cross_origin_3.html b/testing/web-platform/tests/html/browsers/browsing-the-web/history-traversal/browsing_context_name_cross_origin_3.html
new file mode 100644
index 0000000000..b6a35680dd
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/history-traversal/browsing_context_name_cross_origin_3.html
@@ -0,0 +1,44 @@
+
+Restoring window.name on cross-origin history traversal
+
+
+

+

+
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/history-traversal/document-state.https.html b/testing/web-platform/tests/html/browsers/browsing-the-web/history-traversal/document-state.https.html
new file mode 100644
index 0000000000..609ce9b850
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/history-traversal/document-state.https.html
@@ -0,0 +1,135 @@
+
+
+Test the properties of a session history entry's document state
+
+
+
+
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/history-traversal/event-order/after-load-hash-twice.html b/testing/web-platform/tests/html/browsers/browsing-the-web/history-traversal/event-order/after-load-hash-twice.html
new file mode 100644
index 0000000000..75889ef517
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/history-traversal/event-order/after-load-hash-twice.html
@@ -0,0 +1,38 @@
+
+
+Popstate/hashchange/load event ordering
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/history-traversal/event-order/after-load-hash.html b/testing/web-platform/tests/html/browsers/browsing-the-web/history-traversal/event-order/after-load-hash.html
new file mode 100644
index 0000000000..f74d716d91
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/history-traversal/event-order/after-load-hash.html
@@ -0,0 +1,32 @@
+
+
+Popstate/hashchange/load event ordering
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/history-traversal/event-order/after-load-pushState.html b/testing/web-platform/tests/html/browsers/browsing-the-web/history-traversal/event-order/after-load-pushState.html
new file mode 100644
index 0000000000..4f9f3dad47
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/history-traversal/event-order/after-load-pushState.html
@@ -0,0 +1,31 @@
+
+
+Popstate/hashchange/load event ordering
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/history-traversal/event-order/after-load-replaceState.html b/testing/web-platform/tests/html/browsers/browsing-the-web/history-traversal/event-order/after-load-replaceState.html
new file mode 100644
index 0000000000..28148ff7b2
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/history-traversal/event-order/after-load-replaceState.html
@@ -0,0 +1,30 @@
+
+
+Popstate/hashchange/load event ordering
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/history-traversal/event-order/before-load-hash-twice.html b/testing/web-platform/tests/html/browsers/browsing-the-web/history-traversal/event-order/before-load-hash-twice.html
new file mode 100644
index 0000000000..7c8df11843
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/history-traversal/event-order/before-load-hash-twice.html
@@ -0,0 +1,29 @@
+
+
+Popstate/hashchange/load event ordering
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/history-traversal/event-order/before-load-hash.html b/testing/web-platform/tests/html/browsers/browsing-the-web/history-traversal/event-order/before-load-hash.html
new file mode 100644
index 0000000000..97c4636fad
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/history-traversal/event-order/before-load-hash.html
@@ -0,0 +1,27 @@
+
+
+Popstate/hashchange/load event ordering
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/history-traversal/event-order/before-load-pushState.html b/testing/web-platform/tests/html/browsers/browsing-the-web/history-traversal/event-order/before-load-pushState.html
new file mode 100644
index 0000000000..a08afa474f
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/history-traversal/event-order/before-load-pushState.html
@@ -0,0 +1,28 @@
+
+
+Popstate/hashchange/load event ordering
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/history-traversal/event-order/before-load-replaceState.html b/testing/web-platform/tests/html/browsers/browsing-the-web/history-traversal/event-order/before-load-replaceState.html
new file mode 100644
index 0000000000..10d30038fb
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/history-traversal/event-order/before-load-replaceState.html
@@ -0,0 +1,26 @@
+
+
+Popstate/hashchange/load event ordering
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/history-traversal/event-order/pushState-inside-popstate.html b/testing/web-platform/tests/html/browsers/browsing-the-web/history-traversal/event-order/pushState-inside-popstate.html
new file mode 100644
index 0000000000..35ada116ed
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/history-traversal/event-order/pushState-inside-popstate.html
@@ -0,0 +1,16 @@
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/history-traversal/event-order/same-document-traverse-immediate.html b/testing/web-platform/tests/html/browsers/browsing-the-web/history-traversal/event-order/same-document-traverse-immediate.html
new file mode 100644
index 0000000000..51ea20b289
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/history-traversal/event-order/same-document-traverse-immediate.html
@@ -0,0 +1,38 @@
+
+
+Popstate/hashchange/load event ordering
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/history-traversal/event-order/same-document-traverse-wait.html b/testing/web-platform/tests/html/browsers/browsing-the-web/history-traversal/event-order/same-document-traverse-wait.html
new file mode 100644
index 0000000000..39bc760ff7
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/history-traversal/event-order/same-document-traverse-wait.html
@@ -0,0 +1,39 @@
+
+
+Popstate/hashchange/load event ordering
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/history-traversal/events.html b/testing/web-platform/tests/html/browsers/browsing-the-web/history-traversal/events.html
new file mode 100644
index 0000000000..d5ff83fac0
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/history-traversal/events.html
@@ -0,0 +1,151 @@
+
+ PageTransitionEffect Event 
+
+
+

+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/history-traversal/hashchange_event.html b/testing/web-platform/tests/html/browsers/browsing-the-web/history-traversal/hashchange_event.html
new file mode 100644
index 0000000000..b7111255f8
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/history-traversal/hashchange_event.html
@@ -0,0 +1,49 @@
+
+Queue a task to fire hashchange event
+
+
+

+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/history-traversal/history-traversal-navigate-parent-while-child-loading.html b/testing/web-platform/tests/html/browsers/browsing-the-web/history-traversal/history-traversal-navigate-parent-while-child-loading.html
new file mode 100644
index 0000000000..2b70375a14
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/history-traversal/history-traversal-navigate-parent-while-child-loading.html
@@ -0,0 +1,30 @@
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/history-traversal/history-traversal-navigates-multiple-frames.html b/testing/web-platform/tests/html/browsers/browsing-the-web/history-traversal/history-traversal-navigates-multiple-frames.html
new file mode 100644
index 0000000000..4f2429fbfd
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/history-traversal/history-traversal-navigates-multiple-frames.html
@@ -0,0 +1,29 @@
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/history-traversal/persisted-user-state-restoration/resources/blank1.html b/testing/web-platform/tests/html/browsers/browsing-the-web/history-traversal/persisted-user-state-restoration/resources/blank1.html
new file mode 100644
index 0000000000..6b4df1ef2f
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/history-traversal/persisted-user-state-restoration/resources/blank1.html
@@ -0,0 +1,8 @@
+
+
+ Blank 1 
\ No newline at end of file
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/history-traversal/persisted-user-state-restoration/resources/blank2.html b/testing/web-platform/tests/html/browsers/browsing-the-web/history-traversal/persisted-user-state-restoration/resources/blank2.html
new file mode 100644
index 0000000000..def2139667
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/history-traversal/persisted-user-state-restoration/resources/blank2.html
@@ -0,0 +1,8 @@
+
+
+ Blank 2 
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/history-traversal/persisted-user-state-restoration/resources/page-with-fragment.html b/testing/web-platform/tests/html/browsers/browsing-the-web/history-traversal/persisted-user-state-restoration/resources/page-with-fragment.html
new file mode 100644
index 0000000000..11737661d0
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/history-traversal/persisted-user-state-restoration/resources/page-with-fragment.html
@@ -0,0 +1,20 @@
+
+
+
+Page with fragment
+  
+
\ No newline at end of file
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/history-traversal/persisted-user-state-restoration/resources/post_name_on_load.html b/testing/web-platform/tests/html/browsers/browsing-the-web/history-traversal/persisted-user-state-restoration/resources/post_name_on_load.html
new file mode 100644
index 0000000000..1e9b10d1ee
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/history-traversal/persisted-user-state-restoration/resources/post_name_on_load.html
@@ -0,0 +1,7 @@
+
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/history-traversal/persisted-user-state-restoration/resume-timer-on-history-back.html b/testing/web-platform/tests/html/browsers/browsing-the-web/history-traversal/persisted-user-state-restoration/resume-timer-on-history-back.html
new file mode 100644
index 0000000000..77602b2d42
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/history-traversal/persisted-user-state-restoration/resume-timer-on-history-back.html
@@ -0,0 +1,146 @@
+
+Verify history.back() on a persisted page resumes timers
+
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/history-traversal/persisted-user-state-restoration/scroll-restoration-basic.html b/testing/web-platform/tests/html/browsers/browsing-the-web/history-traversal/persisted-user-state-restoration/scroll-restoration-basic.html
new file mode 100644
index 0000000000..e47cd9c383
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/history-traversal/persisted-user-state-restoration/scroll-restoration-basic.html
@@ -0,0 +1,34 @@
+
+Verify existence and basic read/write function of history.scrollRestoration
+
+
+
+
+
+
\ No newline at end of file
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/history-traversal/persisted-user-state-restoration/scroll-restoration-fragment-scrolling-cross-origin.html b/testing/web-platform/tests/html/browsers/browsing-the-web/history-traversal/persisted-user-state-restoration/scroll-restoration-fragment-scrolling-cross-origin.html
new file mode 100644
index 0000000000..fec801e94b
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/history-traversal/persisted-user-state-restoration/scroll-restoration-fragment-scrolling-cross-origin.html
@@ -0,0 +1,71 @@
+
+
+Precedence of scroll restoration mode over fragment scrolling in cross-origin history traversal
+
+
+
+
+

+
+
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/history-traversal/persisted-user-state-restoration/scroll-restoration-fragment-scrolling-samedoc.html b/testing/web-platform/tests/html/browsers/browsing-the-web/history-traversal/persisted-user-state-restoration/scroll-restoration-fragment-scrolling-samedoc.html
new file mode 100644
index 0000000000..073e0f6e06
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/history-traversal/persisted-user-state-restoration/scroll-restoration-fragment-scrolling-samedoc.html
@@ -0,0 +1,55 @@
+
+
+
+
+
+  
+
+
+
+
+
\ No newline at end of file
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/history-traversal/persisted-user-state-restoration/scroll-restoration-navigation-cross-origin.html b/testing/web-platform/tests/html/browsers/browsing-the-web/history-traversal/persisted-user-state-restoration/scroll-restoration-navigation-cross-origin.html
new file mode 100644
index 0000000000..87a337b2da
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/history-traversal/persisted-user-state-restoration/scroll-restoration-navigation-cross-origin.html
@@ -0,0 +1,71 @@
+
+
+Correct behaviour of scroll restoration mode is cross origin history traversal
+
+
+
+
+  
+
+
+
+
+
\ No newline at end of file
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/history-traversal/persisted-user-state-restoration/scroll-restoration-navigation-samedoc.html b/testing/web-platform/tests/html/browsers/browsing-the-web/history-traversal/persisted-user-state-restoration/scroll-restoration-navigation-samedoc.html
new file mode 100644
index 0000000000..46d40eedc6
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/history-traversal/persisted-user-state-restoration/scroll-restoration-navigation-samedoc.html
@@ -0,0 +1,81 @@
+
+Correct behaviour of scroll restoration mode in same document history traversals
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/history-traversal/popstate_event.html b/testing/web-platform/tests/html/browsers/browsing-the-web/history-traversal/popstate_event.html
new file mode 100644
index 0000000000..a41fabf968
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/history-traversal/popstate_event.html
@@ -0,0 +1,47 @@
+
+Queue a task to fire popstate event
+
+
+

+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/history-traversal/resources/a.html b/testing/web-platform/tests/html/browsers/browsing-the-web/history-traversal/resources/a.html
new file mode 100644
index 0000000000..55b73e1153
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/history-traversal/resources/a.html
@@ -0,0 +1 @@
+Welcome to A.
\ No newline at end of file
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/history-traversal/resources/api-availability-1.html b/testing/web-platform/tests/html/browsers/browsing-the-web/history-traversal/resources/api-availability-1.html
new file mode 100644
index 0000000000..2c31168750
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/history-traversal/resources/api-availability-1.html
@@ -0,0 +1,31 @@
+
+API availability following history traversal - 1
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/history-traversal/resources/api-availability-2.html b/testing/web-platform/tests/html/browsers/browsing-the-web/history-traversal/resources/api-availability-2.html
new file mode 100644
index 0000000000..420e5092bc
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/history-traversal/resources/api-availability-2.html
@@ -0,0 +1,3 @@
+
+API availability following history traversal - 2
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/history-traversal/resources/b.html b/testing/web-platform/tests/html/browsers/browsing-the-web/history-traversal/resources/b.html
new file mode 100644
index 0000000000..8f2fc900dd
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/history-traversal/resources/b.html
@@ -0,0 +1 @@
+Welcome to B.
\ No newline at end of file
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/history-traversal/resources/c.html b/testing/web-platform/tests/html/browsers/browsing-the-web/history-traversal/resources/c.html
new file mode 100644
index 0000000000..db494e878e
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/history-traversal/resources/c.html
@@ -0,0 +1 @@
+Welcome to C.
\ No newline at end of file
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/history-traversal/resources/unset_context_name-1.sub.html b/testing/web-platform/tests/html/browsers/browsing-the-web/history-traversal/resources/unset_context_name-1.sub.html
new file mode 100644
index 0000000000..97918a1f99
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/history-traversal/resources/unset_context_name-1.sub.html
@@ -0,0 +1,45 @@
+
+
+window.name test helper
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/history-traversal/resources/unset_context_name_stash.py b/testing/web-platform/tests/html/browsers/browsing-the-web/history-traversal/resources/unset_context_name_stash.py
new file mode 100644
index 0000000000..411a4587bc
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/history-traversal/resources/unset_context_name_stash.py
@@ -0,0 +1,13 @@
+def main(request, response):
+    key = request.GET.first(b"id")
+    if request.method == "POST":
+        value = request.GET.first(b"value")
+        request.server.stash.take(key)
+        request.server.stash.put(key, value)
+        return b"OK"
+    else:
+        value = request.server.stash.take(key)
+        if value is not None:
+            return value
+        else:
+            return b"NONE"
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/history-traversal/same-url.html b/testing/web-platform/tests/html/browsers/browsing-the-web/history-traversal/same-url.html
new file mode 100644
index 0000000000..bcca5ed90c
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/history-traversal/same-url.html
@@ -0,0 +1,50 @@
+Test same-URL navigation and its effects on history
+
+
+

+
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/history-traversal/scroll-restoration-order.html b/testing/web-platform/tests/html/browsers/browsing-the-web/history-traversal/scroll-restoration-order.html
new file mode 100644
index 0000000000..8fe7d9f977
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/history-traversal/scroll-restoration-order.html
@@ -0,0 +1,74 @@
+
+
+History restoration order test
+
+
+
+
+
+
+
+
\ No newline at end of file
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/history-traversal/srcdoc/consecutive-srcdoc.html b/testing/web-platform/tests/html/browsers/browsing-the-web/history-traversal/srcdoc/consecutive-srcdoc.html
new file mode 100644
index 0000000000..9aab36b986
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/history-traversal/srcdoc/consecutive-srcdoc.html
@@ -0,0 +1,85 @@
+
+
+changing srcdoc to a different srcdoc
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/history-traversal/srcdoc/srcdoc-history-entries.html b/testing/web-platform/tests/html/browsers/browsing-the-web/history-traversal/srcdoc/srcdoc-history-entries.html
new file mode 100644
index 0000000000..09f4094c5f
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/history-traversal/srcdoc/srcdoc-history-entries.html
@@ -0,0 +1,95 @@
+
+
+srcdoc history entries
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/history-traversal/support/window-name-after-cross-origin-main-frame-navigation-popup.sub.html b/testing/web-platform/tests/html/browsers/browsing-the-web/history-traversal/support/window-name-after-cross-origin-main-frame-navigation-popup.sub.html
new file mode 100644
index 0000000000..e13d191658
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/history-traversal/support/window-name-after-cross-origin-main-frame-navigation-popup.sub.html
@@ -0,0 +1,10 @@
+
+
+
+
+
+    
+
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/history-traversal/support/window-name-after-same-origin-main-frame-navigation-1.sub.html b/testing/web-platform/tests/html/browsers/browsing-the-web/history-traversal/support/window-name-after-same-origin-main-frame-navigation-1.sub.html
new file mode 100644
index 0000000000..4b7824b488
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/history-traversal/support/window-name-after-same-origin-main-frame-navigation-1.sub.html
@@ -0,0 +1,4 @@
+
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/history-traversal/support/window-name-navigation.sub.html b/testing/web-platform/tests/html/browsers/browsing-the-web/history-traversal/support/window-name-navigation.sub.html
new file mode 100644
index 0000000000..285469a148
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/history-traversal/support/window-name-navigation.sub.html
@@ -0,0 +1,11 @@
+
+
+    
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/history-traversal/support/window-name-test.sub.html b/testing/web-platform/tests/html/browsers/browsing-the-web/history-traversal/support/window-name-test.sub.html
new file mode 100644
index 0000000000..460db2e979
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/history-traversal/support/window-name-test.sub.html
@@ -0,0 +1,23 @@
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/history-traversal/unset_context_name.html b/testing/web-platform/tests/html/browsers/browsing-the-web/history-traversal/unset_context_name.html
new file mode 100644
index 0000000000..285f6d7428
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/history-traversal/unset_context_name.html
@@ -0,0 +1,32 @@
+
+window.name is reset after navigating to a different origin
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/history-traversal/window-name-after-cross-origin-aux-frame-navigation.sub.html b/testing/web-platform/tests/html/browsers/browsing-the-web/history-traversal/window-name-after-cross-origin-aux-frame-navigation.sub.html
new file mode 100644
index 0000000000..6bc64c6373
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/history-traversal/window-name-after-cross-origin-aux-frame-navigation.sub.html
@@ -0,0 +1,17 @@
+
+
+
+    
+    
+    
+
+
+    
+
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/history-traversal/window-name-after-cross-origin-main-frame-navigation.sub.html b/testing/web-platform/tests/html/browsers/browsing-the-web/history-traversal/window-name-after-cross-origin-main-frame-navigation.sub.html
new file mode 100644
index 0000000000..fb0bb1883f
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/history-traversal/window-name-after-cross-origin-main-frame-navigation.sub.html
@@ -0,0 +1,24 @@
+
+
+
+    
+    
+
+
+    
+    
+
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/history-traversal/window-name-after-cross-origin-sub-frame-navigation.sub.html b/testing/web-platform/tests/html/browsers/browsing-the-web/history-traversal/window-name-after-cross-origin-sub-frame-navigation.sub.html
new file mode 100644
index 0000000000..a309be6d80
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/history-traversal/window-name-after-cross-origin-sub-frame-navigation.sub.html
@@ -0,0 +1,18 @@
+
+
+
+    
+    
+    
+
+
+    
+    
+
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/003-1.html b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/003-1.html
new file mode 100644
index 0000000000..4d2229eb51
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/003-1.html
@@ -0,0 +1,7 @@
+
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/003-2.html b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/003-2.html
new file mode 100644
index 0000000000..827a069479
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/003-2.html
@@ -0,0 +1,9 @@
+
+003-2
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/003-3.html b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/003-3.html
new file mode 100644
index 0000000000..8b26c896fd
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/003-3.html
@@ -0,0 +1,4 @@
+
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/003.html b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/003.html
new file mode 100644
index 0000000000..f437150960
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/003.html
@@ -0,0 +1,22 @@
+
+Navigation from unload whilst traversing history
+
+
+

+
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/004-1.html b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/004-1.html
new file mode 100644
index 0000000000..02f916fd9c
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/004-1.html
@@ -0,0 +1,7 @@
+
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/004-2.html b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/004-2.html
new file mode 100644
index 0000000000..f2ef83ee1a
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/004-2.html
@@ -0,0 +1,9 @@
+
+003-2
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/004-3.html b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/004-3.html
new file mode 100644
index 0000000000..c98711ae98
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/004-3.html
@@ -0,0 +1,4 @@
+
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/004.html b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/004.html
new file mode 100644
index 0000000000..dddde4918b
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/004.html
@@ -0,0 +1,22 @@
+
+Navigation from unload whilst traversing cross-origin history
+
+
+

+
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/005.html b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/005.html
new file mode 100644
index 0000000000..a87e6e9b3d
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/005.html
@@ -0,0 +1,16 @@
+
+Link with onclick navigation and href navigation 
+
+
+

+
+Test
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/006.html b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/006.html
new file mode 100644
index 0000000000..17b3123faa
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/006.html
@@ -0,0 +1,17 @@
+
+Link with onclick form submit and href navigation 
+
+
+

+
+

+Test
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/007.html b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/007.html
new file mode 100644
index 0000000000..dbb23ee644
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/007.html
@@ -0,0 +1,16 @@
+
+Link with onclick javascript url and href navigation 
+
+
+

+
+Test
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/008.html b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/008.html
new file mode 100644
index 0000000000..3201d0679d
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/008.html
@@ -0,0 +1,17 @@
+
+Link with onclick form submit to javascript url and href navigation 
+
+
+

+
+

+Test
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/009.html b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/009.html
new file mode 100644
index 0000000000..d963bed2bf
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/009.html
@@ -0,0 +1,22 @@
+
+Link with onclick form submit to javascript url with document.write and href navigation 
+
+
+

+
+

+Test
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/010.html b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/010.html
new file mode 100644
index 0000000000..606ad82f48
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/010.html
@@ -0,0 +1,17 @@
+
+Link with onclick form submit to javascript url with delayed document.write and href navigation 
+
+
+

+
+

+Test
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/011.html b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/011.html
new file mode 100644
index 0000000000..4d54267968
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/011.html
@@ -0,0 +1,21 @@
+
+Link with onclick navigation to javascript url with document.write and href navigation 
+
+
+

+
+Test
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/012.html b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/012.html
new file mode 100644
index 0000000000..3795975d70
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/012.html
@@ -0,0 +1,20 @@
+
+Link with onclick navigation to javascript url with delayed document.write and href navigation 
+
+
+

+
+
+Test
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/013.html b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/013.html
new file mode 100644
index 0000000000..36a4521843
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/013.html
@@ -0,0 +1,20 @@
+
+Link with onclick navigation to javascript url with delayed document.write and href navigation 
+
+
+

+
+Test
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/014.html b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/014.html
new file mode 100644
index 0000000000..b27ca992bd
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/014.html
@@ -0,0 +1,21 @@
+
+ Link with javascript onclick form submission script order 
+
+
+

+
+

+Test
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/015.html b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/015.html
new file mode 100644
index 0000000000..696aaec2c8
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/015.html
@@ -0,0 +1,20 @@
+
+ Link with javascript onclick and href script order 
+
+
+

+
+Test
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/abort-document-load-1.html b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/abort-document-load-1.html
new file mode 100644
index 0000000000..50a9a50fa0
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/abort-document-load-1.html
@@ -0,0 +1,32 @@
+
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/abort-document-load-2.html b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/abort-document-load-2.html
new file mode 100644
index 0000000000..966b93c51a
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/abort-document-load-2.html
@@ -0,0 +1,32 @@
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/abort-document-load.html b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/abort-document-load.html
new file mode 100644
index 0000000000..4a4c3df4e7
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/abort-document-load.html
@@ -0,0 +1,30 @@
+
+Aborting a Document load
+
+
+
+

+
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/about-srcdoc-navigation-blocked.window.js b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/about-srcdoc-navigation-blocked.window.js
new file mode 100644
index 0000000000..659f7321c0
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/about-srcdoc-navigation-blocked.window.js
@@ -0,0 +1,45 @@
+// META: title=Navigation to about:srcdoc, not via srcdoc="", must be blocked
+// META: script=../resources/helpers.js
+
+promise_test(async t => {
+  const iframe = await addSrcdocIframe();
+
+  iframe.contentWindow.location = "/common/blank.html";
+  await waitForIframeLoad(iframe);
+
+  iframe.contentWindow.location = "about:srcdoc";
+
+  // Fetching "about:srcdoc" should result in a network error, and navigating
+  // to a network error should produce an opaque-origin page. In particular,
+  // since the error page should end up being cross-origin to the parent
+  // frame, `contentDocument` should return `null`.
+  //
+  // If instead this results in a message because we re-loaded a srcdoc document
+  // from the contents of the srcdoc="" attribute, immediately fail.
+  await Promise.race([
+    t.step_wait(() => iframe.contentDocument === null),
+    failOnMessage(iframe.contentWindow)
+  ]);
+}, "Navigations to about:srcdoc via window.location must be blocked");
+
+promise_test(async t => {
+  const iframe = await addSrcdocIframe();
+  iframe.contentWindow.name = "test_frame";
+
+  iframe.contentWindow.location = "/common/blank.html";
+  await waitForIframeLoad(iframe);
+
+  window.open("about:srcdoc", "test_frame");
+
+  // Fetching "about:srcdoc" should result in a network error, and navigating
+  // to a network error should produce an opaque-origin page. In particular,
+  // since the error page should end up being cross-origin to the parent
+  // frame, `contentDocument` should return `null`.
+  //
+  // If instead this results in a message because we re-loaded a srcdoc document
+  // from the contents of the srcdoc="" attribute, immediately fail.
+  await Promise.race([
+    t.step_wait(() => iframe.contentDocument === null),
+    failOnMessage(iframe.contentWindow)
+  ]);
+}, "Navigations to about:srcdoc via window.open() must be blocked");
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/anchor-fragment-form-submit-longfragment.html b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/anchor-fragment-form-submit-longfragment.html
new file mode 100644
index 0000000000..8b9802f589
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/anchor-fragment-form-submit-longfragment.html
@@ -0,0 +1,29 @@
+
+
+
+
+Anchor element with onclick form submission and href to fragment
+
+
+
+
+
+
+

+Test
+
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/anchor-fragment-form-submit-withpath.html b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/anchor-fragment-form-submit-withpath.html
new file mode 100644
index 0000000000..823174181e
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/anchor-fragment-form-submit-withpath.html
@@ -0,0 +1,35 @@
+
+
+
+
+Anchor element with onclick form submission and href to fragment
+
+
+
+
+
+
+

+Test
+
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/anchor-fragment-form-submit.html b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/anchor-fragment-form-submit.html
new file mode 100644
index 0000000000..e0c0e6f82d
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/anchor-fragment-form-submit.html
@@ -0,0 +1,29 @@
+
+
+
+
+Anchor element with onclick form submission and href to fragment
+
+
+
+
+
+
+

+Test
+
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/anchor-jsurl-form-submit.html b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/anchor-jsurl-form-submit.html
new file mode 100644
index 0000000000..1bf5d3595a
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/anchor-jsurl-form-submit.html
@@ -0,0 +1,29 @@
+
+
+
+
+Anchor element with onclick form submission and href to javascript: url
+
+
+
+
+
+
+

+Test
+
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/child-navigates-parent-cross-origin.window.js b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/child-navigates-parent-cross-origin.window.js
new file mode 100644
index 0000000000..c5bed0fd4c
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/child-navigates-parent-cross-origin.window.js
@@ -0,0 +1,90 @@
+// META: script=/common/get-host-info.sub.js
+// META: script=resources/wait-for-messages.js
+
+function testNavigationFails(params) {
+  return async (t) => {
+    // Start waiting for messages before inserting the child frame, to avoid any
+    // race conditions. Note that this would be racy if we executed tests
+    // concurrently, thankfully `promise_test` executes sequentially. See also:
+    // https://github.com/web-platform-tests/rfcs/pull/75
+    const messagesPromise = waitForMessages(1);
+
+    // Execute the test in an iframe, so that the document executing the test
+    // is not navigated away mid-test in case of failure.
+    const child = document.createElement("iframe");
+    document.body.appendChild(child);
+    t.add_cleanup(() => { document.body.removeChild(child); });
+
+    const url = new URL(
+        "resources/child-navigates-parent-cross-origin-inner.html",
+        window.location);
+
+    // Load the grandchild iframe from a different origin.
+    url.host = get_host_info().REMOTE_HOST;
+
+    for (const key in params || {}) {
+      url.searchParams.set(key, params[key]);
+    }
+
+    const grandchild = child.contentDocument.createElement("iframe");
+    grandchild.src = url;
+    child.contentDocument.body.appendChild(grandchild);
+
+    const messages = await messagesPromise;
+    assert_array_equals(messages, ["error: SecurityError"]);
+  }
+}
+
+promise_test(
+    testNavigationFails(),
+    "Child document attempts to navigate cross-origin parent via location");
+
+promise_test(
+    testNavigationFails({ "property": "hash" }),
+    "Child document attempts to navigate cross-origin parent via "+
+    "location.hash");
+
+promise_test(
+    testNavigationFails({ "property": "host" }),
+    "Child document attempts to navigate cross-origin parent via "+
+    "location.host");
+
+promise_test(
+    testNavigationFails({ "property": "hostname" }),
+    "Child document attempts to navigate cross-origin parent via "+
+    "location.hostname");
+
+promise_test(
+    testNavigationFails({ "property": "href" }),
+    "Child document attempts to navigate cross-origin parent via "+
+    "location.href");
+
+promise_test(
+    testNavigationFails({ "property": "pathname" }),
+    "Child document attempts to navigate cross-origin parent via "+
+    "location.pathname");
+
+promise_test(
+    testNavigationFails({ "property": "protocol" }),
+    "Child document attempts to navigate cross-origin parent via "+
+    "location.protocol");
+
+promise_test(
+    testNavigationFails({ "property": "reload" }),
+    "Child document attempts to navigate cross-origin parent via "+
+    "location.reload()");
+
+promise_test(
+    testNavigationFails({ "property": "replace" }),
+    "Child document attempts to navigate cross-origin parent via "+
+    "location.replace()");
+
+promise_test(
+    testNavigationFails({ "property": "search" }),
+    "Child document attempts to navigate cross-origin parent via "+
+    "location.search");
+
+promise_test(
+    testNavigationFails({ "property": "xxxNonExistent" }),
+    "Child document attempts to navigate cross-origin parent via non-standard "+
+    "location property");
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/child-navigates-parent-same-origin.window.js b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/child-navigates-parent-same-origin.window.js
new file mode 100644
index 0000000000..a40c412029
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/child-navigates-parent-same-origin.window.js
@@ -0,0 +1,24 @@
+// META: script=resources/wait-for-messages.js
+
+function testNavigation(url) {
+  return async (t) => {
+    // Start waiting for messages before inserting the child frame, to avoid any
+    // race conditions.
+    const messagesPromise = waitForMessages(3);
+
+    const iframe = document.createElement("iframe");
+    iframe.src = url;
+    document.body.appendChild(iframe);
+
+    const messages = await messagesPromise;
+    assert_array_equals(messages, ["initial", "inner", "destination"]);
+  }
+}
+
+promise_test(
+    testNavigation("resources/child-navigates-parent-location-initial.html"),
+    "Child document navigates same-origin parent via document.location");
+
+promise_test(
+    testNavigation("resources/child-navigates-parent-submit-initial.html"),
+    "Child document navigates same-origin parent via form submission");
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/cross-origin-top-navigation-with-user-activation-in-parent.window.js b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/cross-origin-top-navigation-with-user-activation-in-parent.window.js
new file mode 100644
index 0000000000..42b4b208ee
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/cross-origin-top-navigation-with-user-activation-in-parent.window.js
@@ -0,0 +1,8 @@
+async_test(t => {
+  addEventListener('message', t.step_func_done(e => {
+    assert_equals(e.data, 'Denied');
+  }));
+  const w = open("resources/page-with-top-navigating-iframe.html?parent_user_gesture=true");
+  t.add_cleanup(() => {w.close()});
+
+}, "Cross-origin top navigation is blocked without user activation, even if the parent has user activation");
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/cross-origin-top-navigation-without-user-activation.window.js b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/cross-origin-top-navigation-without-user-activation.window.js
new file mode 100644
index 0000000000..57f0bce247
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/cross-origin-top-navigation-without-user-activation.window.js
@@ -0,0 +1,8 @@
+async_test(t => {
+  addEventListener('message', t.step_func_done(e => {
+    assert_equals(e.data, 'Denied');
+  }));
+  const w = open("resources/page-with-top-navigating-iframe.html");
+  t.add_cleanup(() => {w.close()});
+
+}, "Cross-origin top navigation is blocked without user activation");
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/empty-iframe-load-event.html b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/empty-iframe-load-event.html
new file mode 100644
index 0000000000..b9108f9937
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/empty-iframe-load-event.html
@@ -0,0 +1,39 @@
+
+load event for empty iframe in relation to the event loop
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/empty_fragment.html b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/empty_fragment.html
new file mode 100644
index 0000000000..18a6f84c9f
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/empty_fragment.html
@@ -0,0 +1,20 @@
+
+
+Navigating to the same URL with an empty fragment aborts the navigation
+
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/empty_fragment_iframe.html b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/empty_fragment_iframe.html
new file mode 100644
index 0000000000..26b28a0d7d
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/empty_fragment_iframe.html
@@ -0,0 +1,11 @@
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/failure-check-sequence.https.html b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/failure-check-sequence.https.html
new file mode 100644
index 0000000000..5d7aa2b9cb
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/failure-check-sequence.https.html
@@ -0,0 +1,76 @@
+
+
+
+
+Sequence of the checks performed against a navigation response
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/initial-empty-document/iframe-nosrc.html b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/initial-empty-document/iframe-nosrc.html
new file mode 100644
index 0000000000..b89d3bb54b
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/initial-empty-document/iframe-nosrc.html
@@ -0,0 +1,178 @@
+
+
+Navigations on iframe without src attribute
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/initial-empty-document/iframe-src-204-fragment.html b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/initial-empty-document/iframe-src-204-fragment.html
new file mode 100644
index 0000000000..2a472f6a6d
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/initial-empty-document/iframe-src-204-fragment.html
@@ -0,0 +1,144 @@
+
+
+Fragment navigations on iframe with src set to URL that doesn't load a document (HTTP 204)
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/initial-empty-document/iframe-src-204-pushState-replaceState.html b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/initial-empty-document/iframe-src-204-pushState-replaceState.html
new file mode 100644
index 0000000000..8a97fd36a4
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/initial-empty-document/iframe-src-204-pushState-replaceState.html
@@ -0,0 +1,66 @@
+
+
+pushState/replaceState on iframe with src set to URL that doesn't load a document (HTTP 204)
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/initial-empty-document/iframe-src-204.html b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/initial-empty-document/iframe-src-204.html
new file mode 100644
index 0000000000..f7bade68fb
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/initial-empty-document/iframe-src-204.html
@@ -0,0 +1,178 @@
+
+
+Navigations on iframe with src set to URL that doesn't load a new document
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/initial-empty-document/iframe-src-aboutblank-navigate-immediately.html b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/initial-empty-document/iframe-src-aboutblank-navigate-immediately.html
new file mode 100644
index 0000000000..a75257d91c
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/initial-empty-document/iframe-src-aboutblank-navigate-immediately.html
@@ -0,0 +1,124 @@
+
+
+Navigations immediately after appending iframe with src='about:blank'
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/initial-empty-document/iframe-src-aboutblank-wait-for-load.html b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/initial-empty-document/iframe-src-aboutblank-wait-for-load.html
new file mode 100644
index 0000000000..b7066ce521
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/initial-empty-document/iframe-src-aboutblank-wait-for-load.html
@@ -0,0 +1,134 @@
+
+
+Navigations after iframe with src='about:blank' finished loading
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/initial-empty-document/initial-content-replacement.html b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/initial-empty-document/initial-content-replacement.html
new file mode 100644
index 0000000000..44f890df6c
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/initial-empty-document/initial-content-replacement.html
@@ -0,0 +1,86 @@
+
+
+
+  Content synchronously added to iframe/opened window's document after creation
+  won't get replaced asynchronously when staying on the initial empty document
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/initial-empty-document/load-event-iframe-element.html b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/initial-empty-document/load-event-iframe-element.html
new file mode 100644
index 0000000000..0d19770cc1
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/initial-empty-document/load-event-iframe-element.html
@@ -0,0 +1,64 @@
+
+
+"load" event fires on the iframe element when loading the initial empty document
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/initial-empty-document/load-pageshow-events-iframe-contentWindow.html b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/initial-empty-document/load-pageshow-events-iframe-contentWindow.html
new file mode 100644
index 0000000000..4aea4aac81
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/initial-empty-document/load-pageshow-events-iframe-contentWindow.html
@@ -0,0 +1,44 @@
+
+
+"load" & "pageshow" events do not fire on contentWindow of iframe that stays on the initial empty document
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/initial-empty-document/load-pageshow-events-window-open.html b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/initial-empty-document/load-pageshow-events-window-open.html
new file mode 100644
index 0000000000..9703502f7f
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/initial-empty-document/load-pageshow-events-window-open.html
@@ -0,0 +1,35 @@
+
+
+"load" and "pageshow" events don't fire on window.open() that stays on the initial empty document
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/initial-empty-document/resources/code-injector.html b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/initial-empty-document/resources/code-injector.html
new file mode 100644
index 0000000000..631b95f9ed
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/initial-empty-document/resources/code-injector.html
@@ -0,0 +1,8 @@
+
+
+Subframe
+
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/initial-empty-document/resources/helpers.js b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/initial-empty-document/resources/helpers.js
new file mode 100644
index 0000000000..8d9473a949
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/initial-empty-document/resources/helpers.js
@@ -0,0 +1,121 @@
+// Returns a promise that asserts the "load" and "pageshow" events are not
+// fired on |target|.
+function assertNoLoadAndPageshowEvent(t, target) {
+  target.addEventListener("load", t.unreached_func("load should not be fired"));
+  target.addEventListener("pageshow", t.unreached_func("pageshow should not be fired"));
+  return new Promise(resolve => {
+    // Wait 50ms to ensure events fired after asynchronous navigations are
+    // also captured.
+    setTimeout(resolve, 50);
+  });
+}
+
+const url204 = "/common/blank.html?pipe=status(204)";
+const postMessageToOpenerOnLoad = `
+    window.onload = () => {
+      window.opener.postMessage("loaded", "*")
+    }
+  `;
+
+// -- Start of helpers for iframe initial empty document tests.
+
+// Creates an iframe with an unset src and appends it to the document.
+window.insertIframe = (t) => {
+  const iframe = document.createElement("iframe");
+  t.add_cleanup(() => iframe.remove());
+  document.body.append(iframe);
+  return iframe;
+};
+
+// Creates an iframe with src set to a URL that doesn't commit a new document
+// (results in a HTTP 204 response) and appends it to the document.
+window.insertIframeWith204Src = (t) => {
+  const iframe = document.createElement("iframe");
+  iframe.src = url204;
+  t.add_cleanup(() => iframe.remove());
+  document.body.append(iframe);
+  return iframe;
+};
+
+// Creates an iframe with src="about:blank" and appends it to the document.
+window.insertIframeWithAboutBlankSrc = (t) => {
+  const iframe = document.createElement("iframe");
+  t.add_cleanup(() => iframe.remove());
+  iframe.src = "about:blank";
+  document.body.append(iframe);
+  return iframe;
+};
+
+// Creates an iframe with src="about:blank", appends it to the document, and
+// waits for the non-initial about:blank document finished loading.
+window.insertIframeWithAboutBlankSrcWaitForLoad = async (t) => {
+  const iframe = insertIframeWithAboutBlankSrc(t);
+  const aboutBlankLoad = new Promise(resolve => {
+    // In some browsers, the non-initial about:blank navigation commits
+    // asynchronously, while in other browsers, it would commit synchronously.
+    // This means we can't wait for the "load" event as it might have already
+    // ran. Instead, just wait for 100ms before resolving, as the non-initial
+    // about:blank navigation will most likely take less than 100 ms to commit.
+    t.step_timeout(resolve, 100);
+  });
+  await aboutBlankLoad;
+  return iframe;
+};
+
+// Waits for the "load" event for |urlRelativeToThisDocument| to run on
+// |iframe|.
+window.waitForLoad = (t, iframe, urlRelativeToThisDocument) => {
+  return new Promise(resolve => {
+    iframe.addEventListener("load", t.step_func(() => {
+      assert_equals(iframe.contentWindow.location.href, (new URL(urlRelativeToThisDocument, location.href)).href);
+
+      // Wait a bit longer to ensure all history stuff has settled, e.g. the document is "completely loaded"
+      // (which happens from a queued task).
+      setTimeout(resolve, 0);
+    }), { once: true });
+  });
+};
+
+// -- End of helpers for iframe initial empty document tests.
+
+// -- Start of helpers for opened windows' initial empty document tests.
+
+// window.open() to a URL that doesn't load a new document (results in a HTTP
+// 204 response). This should create a new window that stays on the initial
+// empty document.
+window.windowOpen204 = (t) => {
+  const openedWindow = window.open(url204);
+  t.add_cleanup(() => openedWindow.close());
+  return openedWindow;
+};
+
+// window.open() (no URL set). This should create a new window that stays on
+// the initial empty document as it won't trigger a non-initial about:blank
+// navigation.
+window.windowOpenNoURL = (t) => {
+  const openedWindow = window.open();
+  t.add_cleanup(() => openedWindow.close());
+  return openedWindow;
+};
+
+// window.open("about:blank"). This should create a new window that stays on
+// the initial empty document as it won't trigger a non-initial about:blank
+// navigation.
+window.windowOpenAboutBlank = (t) => {
+  const openedWindow = window.open("about:blank");
+  t.add_cleanup(() => openedWindow.close());
+  return openedWindow;
+};
+
+// Waits for a postMessage with data set to |message| is received on the current
+// window.
+window.waitForMessage = (t, message) => {
+  return new Promise(resolve => {
+    window.addEventListener("message", t.step_func((event) => {
+      if (event.data == message)
+        resolve();
+    }));
+  });
+};
+
+// -- End of helpers for opened windows' initial empty document tests.
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/initial-empty-document/window-open-204-fragment.html b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/initial-empty-document/window-open-204-fragment.html
new file mode 100644
index 0000000000..bb47cd3820
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/initial-empty-document/window-open-204-fragment.html
@@ -0,0 +1,63 @@
+
+
+Fragment navigation on initial empty document created through window.open(url-with-204-response)
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/initial-empty-document/window-open-204-pushState-replaceState.html b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/initial-empty-document/window-open-204-pushState-replaceState.html
new file mode 100644
index 0000000000..b5382b189f
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/initial-empty-document/window-open-204-pushState-replaceState.html
@@ -0,0 +1,61 @@
+
+
+Fragment navigation on initial empty document created through window.open(url-with-204-response)
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/initial-empty-document/window-open-204.html b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/initial-empty-document/window-open-204.html
new file mode 100644
index 0000000000..6461b3c8fc
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/initial-empty-document/window-open-204.html
@@ -0,0 +1,81 @@
+
+
+Navigations on window.open() with URL that doesn't load a new document
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/initial-empty-document/window-open-aboutblank.html b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/initial-empty-document/window-open-aboutblank.html
new file mode 100644
index 0000000000..f3033d6a21
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/initial-empty-document/window-open-aboutblank.html
@@ -0,0 +1,81 @@
+
+
+Navigations on window.open(about:blank) after waiting for it to load
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/initial-empty-document/window-open-history-length.html b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/initial-empty-document/window-open-history-length.html
new file mode 100644
index 0000000000..ab89bc4098
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/initial-empty-document/window-open-history-length.html
@@ -0,0 +1,31 @@
+
+
+history.length value on window.open()-ed window
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/initial-empty-document/window-open-nourl.html b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/initial-empty-document/window-open-nourl.html
new file mode 100644
index 0000000000..801f77ad48
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/initial-empty-document/window-open-nourl.html
@@ -0,0 +1,78 @@
+
+
+Navigations on window.open() to URL that doesn't load a new document
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/javascript-url-abort/javascript-url-abort-return-value-string.tentative.html b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/javascript-url-abort/javascript-url-abort-return-value-string.tentative.html
new file mode 100644
index 0000000000..f626a79ae6
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/javascript-url-abort/javascript-url-abort-return-value-string.tentative.html
@@ -0,0 +1,28 @@
+
+Aborting fetch for javascript:string navigation
+
+
+
+
+

+
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/javascript-url-abort/javascript-url-abort-return-value-undefined.tentative.html b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/javascript-url-abort/javascript-url-abort-return-value-undefined.tentative.html
new file mode 100644
index 0000000000..80a0d27a7d
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/javascript-url-abort/javascript-url-abort-return-value-undefined.tentative.html
@@ -0,0 +1,25 @@
+
+Not aborting fetch for javascript:undefined navigation
+
+
+
+
+

+
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/javascript-url-abort/support/iframe-and-links.html b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/javascript-url-abort/support/iframe-and-links.html
new file mode 100644
index 0000000000..545b0988ba
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/javascript-url-abort/support/iframe-and-links.html
@@ -0,0 +1,18 @@
+
+
+
+
+
+
+slow link
+javascript:string link
+javascript:undefined link
+
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/javascript-url-abort/support/set-child-loaded.html b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/javascript-url-abort/support/set-child-loaded.html
new file mode 100644
index 0000000000..a4b34ad6e9
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/javascript-url-abort/support/set-child-loaded.html
@@ -0,0 +1,5 @@
+
+set-child-loaded.html
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/javascript-url-global-scope.html b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/javascript-url-global-scope.html
new file mode 100644
index 0000000000..d3dd38ebed
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/javascript-url-global-scope.html
@@ -0,0 +1,16 @@
+
+
+
+
+
+link
+
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/javascript-url-load-as-html.xhtml b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/javascript-url-load-as-html.xhtml
new file mode 100644
index 0000000000..b23bef5917
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/javascript-url-load-as-html.xhtml
@@ -0,0 +1,37 @@
+
+
+
+  
+  
+  
+  
+  javascript: URL navigation to a string must create a HTML document using the correct properties
+
+
+  
+  
+
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/javascript-url-no-beforeunload.window.js b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/javascript-url-no-beforeunload.window.js
new file mode 100644
index 0000000000..47e8f11797
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/javascript-url-no-beforeunload.window.js
@@ -0,0 +1,80 @@
+// META: script=../resources/helpers.js
+
+for (const stringCompletion of [false, true]) {
+  const testNameSuffix = stringCompletion ? ": string completion" : ": undefined completion";
+
+  testNoBeforeunload(
+    { testRunnerWindow: "top", stringCompletion },
+    async (t, urlToSet) => {
+      const iframe = await addIframe();
+      iframe.contentWindow.location.href = urlToSet;
+
+      return iframe.contentWindow;
+    },
+    `Navigating an iframe via location.href to a javascript: URL must not fire beforeunload${testNameSuffix}`
+  );
+
+  testNoBeforeunload(
+    { testRunnerWindow: "top", stringCompletion },
+    async (t, urlToSet) => {
+      const iframe = await addIframe();
+      iframe.src = urlToSet;
+
+      return iframe.contentWindow;
+    },
+    `Navigating an iframe via src="" to a javascript: URL after insertion must not fire beforeunload${testNameSuffix}`
+  );
+
+  testNoBeforeunload(
+    { testRunnerWindow: "opener", stringCompletion },
+    async (t, urlToSet) => {
+      const w = await openWindow("/common/blank.html", t);
+      w.location.href = urlToSet;
+
+      return w;
+    },
+    `Navigating an opened window via location.href to a javascript: URL must not fire beforeunload${testNameSuffix}`
+  );
+
+
+  testNoBeforeunload(
+    { testRunnerWindow: "opener", stringCompletion },
+    async (t, urlToSet) => {
+      const w = await openWindow("../resources/has-iframe.html", t);
+      w.frames[0].onbeforeunload = t.unreached_func("beforeunload must not fire on the iframe");
+      w.location.href = urlToSet;
+
+      return w;
+    },
+    `Navigating an opened window with an iframe via location.href to a javascript: URL must not fire beforeunload on the iframe${testNameSuffix}`
+  );
+}
+
+function testNoBeforeunload({ testRunnerWindow, stringCompletion }, setupAndNavigateFunc, description) {
+  promise_test(async t => {
+    t.add_cleanup(() => {
+      delete window.resolveTestPromise;
+    });
+
+    const ranPromise = new Promise(resolve => {
+      window.resolveTestPromise = resolve;
+    });
+
+    const urlToSet = makeURL({ testRunnerWindow, stringCompletion });
+    const w = await setupAndNavigateFunc(t, urlToSet);
+    w.onbeforeunload = t.unreached_func("beforeunload must not fire");
+
+    await ranPromise;
+    if (stringCompletion) {
+      await waitForMessage(w);
+    }
+  }, description);
+}
+
+function makeURL({ testRunnerWindow, stringCompletion }) {
+  const completion = stringCompletion ?
+    `"a string";` :
+    `undefined;`;
+
+  return `javascript:window.${testRunnerWindow}.resolveTestPromise();${completion};`;
+}
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/javascript-url-query-fragment-components.html b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/javascript-url-query-fragment-components.html
new file mode 100644
index 0000000000..eced9646e5
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/javascript-url-query-fragment-components.html
@@ -0,0 +1,28 @@
+
+ javascript url with query and fragment components 
+
+
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/javascript-url-referrer.window.js b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/javascript-url-referrer.window.js
new file mode 100644
index 0000000000..1f11429c9e
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/javascript-url-referrer.window.js
@@ -0,0 +1,38 @@
+// META: script=../resources/helpers.js
+// META: title=javascript: URL navigation to a string must create a document whose referrer is the navigation initiator
+
+const originalURL = location.href;
+
+const testCases = [
+  ["unsafe-url", location.href],
+  ["origin", self.origin + "/"],
+  ["no-referrer", ""]
+];
+
+for (const [referrerPolicyForStartingWindowCreation, expectedReferrer] of testCases) {
+  promise_test(async (t) => {
+    const meta = document.createElement("meta");
+    meta.name = "referrer";
+    meta.content = referrerPolicyForStartingWindowCreation;
+    t.add_cleanup(() => meta.remove());
+    document.head.append(meta);
+
+    const w = await openWindow("/common/blank.html", t);
+    const originalReferrer = w.document.referrer;
+    assert_equals(originalReferrer, expectedReferrer,
+      "Sanity check: opened window's referrer is set correctly");
+
+    // Mess with the current document's URL so that the initiator URL is different. Then, if that
+    // shows up as the javascript: URL document's referrer, we know the navigation initiator's URL is
+    // being used as the referrer, which is incorrect.
+    history.replaceState(undefined, "", "/incorrect-referrer.html");
+    t.add_cleanup(() => history.replaceState(undefined, "", originalURL));
+
+    w.location.href = `javascript:'a string'`;
+
+    const referrer = await waitForMessage(w);
+
+    assert_equals(referrer, originalReferrer,
+      "javascript: URL-created document's referrer equals the previous document's referrer");
+  }, `${referrerPolicyForStartingWindowCreation} referrer policy used to create the starting page`);
+}
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/javascript-url-return-value-handling-dynamic.html b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/javascript-url-return-value-handling-dynamic.html
new file mode 100644
index 0000000000..3c08d29674
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/javascript-url-return-value-handling-dynamic.html
@@ -0,0 +1,58 @@
+
+ 
+Test javascript URL string return values in direct and indirect (target) frame contexts.
+
+
+
+

+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/javascript-url-return-value-handling.html b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/javascript-url-return-value-handling.html
new file mode 100644
index 0000000000..621a8cbaec
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/javascript-url-return-value-handling.html
@@ -0,0 +1,36 @@
+
+
+Test that javascript: evaluation only performs a navigation to the
+  result when the result is a string value.
+
+
+
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/javascript-url-security-check-failure.sub.html b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/javascript-url-security-check-failure.sub.html
new file mode 100644
index 0000000000..a153ad3e48
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/javascript-url-security-check-failure.sub.html
@@ -0,0 +1,56 @@
+
+
+javascript: URL security check
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/javascript-url-security-check-multi-globals.sub.html b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/javascript-url-security-check-multi-globals.sub.html
new file mode 100644
index 0000000000..4b9d3b7afa
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/javascript-url-security-check-multi-globals.sub.html
@@ -0,0 +1,66 @@
+
+
+Multi-globals: which one is the initiator for the javascript: URL security check?
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/javascript-url-security-check-same-origin-domain.sub.html b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/javascript-url-security-check-same-origin-domain.sub.html
new file mode 100644
index 0000000000..a14a13cfd6
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/javascript-url-security-check-same-origin-domain.sub.html
@@ -0,0 +1,26 @@
+
+
+javascript: URL security check for same-origin-domain but not same-origin
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/javascript-url-task-queuing.html b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/javascript-url-task-queuing.html
new file mode 100644
index 0000000000..1bb05bfb19
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/javascript-url-task-queuing.html
@@ -0,0 +1,58 @@
+
+
+javascript: URL task queuing
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/multiple-globals/context-for-location-assign.html b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/multiple-globals/context-for-location-assign.html
new file mode 100644
index 0000000000..cb2984d409
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/multiple-globals/context-for-location-assign.html
@@ -0,0 +1,27 @@
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/multiple-globals/context-for-location-href.html b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/multiple-globals/context-for-location-href.html
new file mode 100644
index 0000000000..02ff214ed5
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/multiple-globals/context-for-location-href.html
@@ -0,0 +1,27 @@
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/multiple-globals/context-for-location.html b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/multiple-globals/context-for-location.html
new file mode 100644
index 0000000000..fae17dd2ac
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/multiple-globals/context-for-location.html
@@ -0,0 +1,27 @@
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/multiple-globals/context-for-window-open.html b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/multiple-globals/context-for-window-open.html
new file mode 100644
index 0000000000..0a391ef28e
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/multiple-globals/context-for-window-open.html
@@ -0,0 +1,28 @@
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/multiple-globals/entry/entry.html b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/multiple-globals/entry/entry.html
new file mode 100644
index 0000000000..82fecfdd38
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/multiple-globals/entry/entry.html
@@ -0,0 +1,4 @@
+
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/multiple-globals/entry/target.html b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/multiple-globals/entry/target.html
new file mode 100644
index 0000000000..5ceaeaf07e
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/multiple-globals/entry/target.html
@@ -0,0 +1,2 @@
+
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/multiple-globals/incumbent/empty.html b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/multiple-globals/incumbent/empty.html
new file mode 100644
index 0000000000..e69de29bb2
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/multiple-globals/incumbent/target.html b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/multiple-globals/incumbent/target.html
new file mode 100644
index 0000000000..5ceaeaf07e
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/multiple-globals/incumbent/target.html
@@ -0,0 +1,2 @@
+
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/multiple-globals/relevant/empty.html b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/multiple-globals/relevant/empty.html
new file mode 100644
index 0000000000..e69de29bb2
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/multiple-globals/relevant/target.html b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/multiple-globals/relevant/target.html
new file mode 100644
index 0000000000..5ceaeaf07e
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/multiple-globals/relevant/target.html
@@ -0,0 +1,2 @@
+
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/multiple-globals/resources/context-helper.js b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/multiple-globals/resources/context-helper.js
new file mode 100644
index 0000000000..dda338b4cc
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/multiple-globals/resources/context-helper.js
@@ -0,0 +1,34 @@
+// Usage: in the top-level Window, include:
+//
+// 
+// 
+// 
+//
+// Then `scriptToRun` is evaluated, with:
+// - The entry Realm is that of entry/entry.html
+// - The incumbent Realm is that of incumbent/empty.html
+// - The relevant Realm of `relevantWindow`, `relevantWindow.location` etc. is
+//   that of relevant/empty.html
+
+window.scriptToRun = '';
+
+const entryUrl = new URL('entry/entry.html', location).href;
+const incumbentUrl = new URL('incumbent/empty.html', location).href;
+const relevantUrl = new URL('relevant/empty.html', location).href;
+
+function go() {
+    const entry = document.querySelector('#entry');
+    const incumbent = entry.contentDocument.querySelector('#incumbent');
+    const incumbentScript = incumbent.contentDocument.createElement('script');
+    incumbentScript.textContent = `
+    function go() {
+      const relevantWindow =
+          parent.document.querySelector('#relevant').contentWindow;
+      ${window.scriptToRun}
+    }
+    `;
+    incumbent.contentDocument.head.appendChild(incumbentScript);
+    incumbent.contentWindow.go();
+}
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/multiple-globals/resources/target.js b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/multiple-globals/resources/target.js
new file mode 100644
index 0000000000..e3a507b0d8
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/multiple-globals/resources/target.js
@@ -0,0 +1,11 @@
+window.onload = function() {
+    let testWindow;
+    if (opener) {
+      testWindow = opener.top;
+    } else {
+      testWindow = top;
+    }
+    testWindow.postMessage(
+        {location: location.href, referrer: document.referrer},
+        "*");
+}
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/navigate-cross-origin-iframe-to-same-url-with-fragment-fire-load-event.html b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/navigate-cross-origin-iframe-to-same-url-with-fragment-fire-load-event.html
new file mode 100644
index 0000000000..f74bbfd7d3
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/navigate-cross-origin-iframe-to-same-url-with-fragment-fire-load-event.html
@@ -0,0 +1,31 @@
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/navigate-cross-origin-iframe-to-same-url-with-fragment.html b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/navigate-cross-origin-iframe-to-same-url-with-fragment.html
new file mode 100644
index 0000000000..ed228ad59b
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/navigate-cross-origin-iframe-to-same-url-with-fragment.html
@@ -0,0 +1,27 @@
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/navigate-cross-origin-iframe-to-same-url.html b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/navigate-cross-origin-iframe-to-same-url.html
new file mode 100644
index 0000000000..9996d58914
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/navigate-cross-origin-iframe-to-same-url.html
@@ -0,0 +1,22 @@
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/navigate-to-unparseable-url.html b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/navigate-to-unparseable-url.html
new file mode 100644
index 0000000000..f4e4e36f37
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/navigate-to-unparseable-url.html
@@ -0,0 +1,58 @@
+
+
+location.href unparseable URL throws a SyntaxError DOMException
+
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/navigation-unload-cross-origin.sub.window.js b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/navigation-unload-cross-origin.sub.window.js
new file mode 100644
index 0000000000..f23e2c440b
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/navigation-unload-cross-origin.sub.window.js
@@ -0,0 +1,15 @@
+// META: title=Cross-origin navigation started from unload handler must be ignored
+// META: script=../resources/helpers.js
+
+promise_test(async () => {
+  const iframe = await addIframe();
+
+  iframe.contentWindow.addEventListener("unload", () => {
+    iframe.contentWindow.location.href = "//{{hosts[][www]}}/common/blank.html?fail";
+  });
+
+  iframe.src = "/common/blank.html?pass";
+
+  await waitForIframeLoad(iframe);
+  assert_equals(iframe.contentWindow.location.search, "?pass");
+});
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/navigation-unload-data-url.window.js b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/navigation-unload-data-url.window.js
new file mode 100644
index 0000000000..cf39b01107
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/navigation-unload-data-url.window.js
@@ -0,0 +1,15 @@
+// META: title=data: URL navigation started from unload handler must be ignored
+// META: script=../resources/helpers.js
+
+promise_test(async () => {
+  const iframe = await addIframe();
+
+  iframe.contentWindow.addEventListener("unload", () => {
+    iframe.contentWindow.location.href =
+      `data:text/html,unload`;
+  });
+
+  iframe.src =
+    `data:text/html,load`;
+  assert_equals(await waitForMessage(iframe.contentWindow), "pass");
+});
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/navigation-unload-form-submit-1.html b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/navigation-unload-form-submit-1.html
new file mode 100644
index 0000000000..e06def9b20
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/navigation-unload-form-submit-1.html
@@ -0,0 +1,23 @@
+
+
+
navigation-unload-form-submit-1.html

+
+
+
+

+  
+

+
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/navigation-unload-form-submit-2.html b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/navigation-unload-form-submit-2.html
new file mode 100644
index 0000000000..43cd3c1b33
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/navigation-unload-form-submit-2.html
@@ -0,0 +1,7 @@
+
+
+
navigation-unload-form-submit-2.html

+
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/navigation-unload-form-submit.html b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/navigation-unload-form-submit.html
new file mode 100644
index 0000000000..029170d46a
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/navigation-unload-form-submit.html
@@ -0,0 +1,24 @@
+
+
+
+
+
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/navigation-unload-javascript-url.window.js b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/navigation-unload-javascript-url.window.js
new file mode 100644
index 0000000000..abbcb888a0
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/navigation-unload-javascript-url.window.js
@@ -0,0 +1,15 @@
+// META: title=javascript: URL navigation started from unload handler must be ignored
+// META: script=../resources/helpers.js
+
+promise_test(async () => {
+  const iframe = await addIframe();
+
+  iframe.contentWindow.addEventListener("unload", () => {
+    iframe.contentWindow.location.href =
+      `javascript:"unload"`;
+  });
+
+  iframe.src =
+    `javascript:"load"`;
+  assert_equals(await waitForMessage(iframe.contentWindow), "pass");
+});
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/navigation-unload-same-origin-fragment-1.html b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/navigation-unload-same-origin-fragment-1.html
new file mode 100644
index 0000000000..3b5d725fee
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/navigation-unload-same-origin-fragment-1.html
@@ -0,0 +1,9 @@
+
+
+
navigation-unload-same-origin-fragment-1.html

+
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/navigation-unload-same-origin-fragment-2.html b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/navigation-unload-same-origin-fragment-2.html
new file mode 100644
index 0000000000..2fb7f50b43
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/navigation-unload-same-origin-fragment-2.html
@@ -0,0 +1,9 @@
+
+
+
navigation-unload-same-origin-fragment-2.html

+
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/navigation-unload-same-origin-fragment.html b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/navigation-unload-same-origin-fragment.html
new file mode 100644
index 0000000000..c4dceb9e04
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/navigation-unload-same-origin-fragment.html
@@ -0,0 +1,29 @@
+
+
+
+
+
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/navigation-unload-same-origin.window.js b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/navigation-unload-same-origin.window.js
new file mode 100644
index 0000000000..826af4b75b
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/navigation-unload-same-origin.window.js
@@ -0,0 +1,15 @@
+// META: title=Same-origin navigation started from unload handler must be ignored
+// META: script=../resources/helpers.js
+
+promise_test(async () => {
+  const iframe = await addIframe();
+
+  iframe.contentWindow.addEventListener("unload", () => {
+    iframe.contentWindow.location.href = "/common/blank.html?fail";
+  });
+
+  iframe.src = "/common/blank.html?pass";
+
+  await waitForIframeLoad(iframe);
+  assert_equals(iframe.contentWindow.location.search, "?pass");
+});
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/plugin-document.historical.html b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/plugin-document.historical.html
new file mode 100644
index 0000000000..547917b795
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/plugin-document.historical.html
@@ -0,0 +1,22 @@
+
+
+Same-origin PDFs must not create accessible Document objects
+
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/redirect-to-about.window.js b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/redirect-to-about.window.js
new file mode 100644
index 0000000000..5480911895
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/redirect-to-about.window.js
@@ -0,0 +1,34 @@
+"use strict";
+
+["about:blank", "about:srcdoc", "about:nonstandard"].forEach(aboutURL => {
+  promise_test(async t => {
+    const iframe = document.createElement("iframe");
+    iframe.src = `resources/redirect.py?location=${aboutURL}`;
+    document.body.append(iframe);
+
+    // Unfortunately Firefox does not fire a load event for network errors yet, but there is no
+    // other way I can see to test this. (Also applicable below.)
+    await new Promise(r => iframe.onload = r);
+
+    // Must throw since error pages are opaque origin.
+    assert_throws_dom("SecurityError", () => {
+      iframe.contentWindow.document;
+    });
+  }, `An iframe with src set to a redirect to ${aboutURL}`);
+
+  promise_test(async t => {
+    const iframe = document.createElement("iframe");
+    iframe.src = "/common/blank.html";
+    document.body.append(iframe);
+
+    await new Promise(r => iframe.onload = r);
+
+    iframe.contentWindow.location.href = `resources/redirect.py?location=${aboutURL}`;
+    await new Promise(r => iframe.onload = r);
+
+    // Must throw since error pages are opaque origin.
+    assert_throws_dom("SecurityError", () => {
+      iframe.contentWindow.document;
+    });
+  }, `An iframe that is navigated to a redirect to ${aboutURL}`);
+});
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/redirect-to-data.html b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/redirect-to-data.html
new file mode 100644
index 0000000000..f9e8021ddf
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/redirect-to-data.html
@@ -0,0 +1,75 @@
+
+
+Redirecting to data: URLs is disallowed
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/redirect-to-unparseable-url.html b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/redirect-to-unparseable-url.html
new file mode 100644
index 0000000000..b025f34478
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/redirect-to-unparseable-url.html
@@ -0,0 +1,71 @@
+
+
+Session history interaction with redirects to unparseable URLs
+
+
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/refresh/README.md b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/refresh/README.md
new file mode 100644
index 0000000000..52548db656
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/refresh/README.md
@@ -0,0 +1 @@
+See `/html/semantics/document-metadata/the-meta-element/pragma-directives/attr-meta-http-equiv-refresh/parsing.html` for more detailed parsing tests (shared with ``).
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/refresh/navigate.window.js b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/refresh/navigate.window.js
new file mode 100644
index 0000000000..7d5a0fe21d
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/refresh/navigate.window.js
@@ -0,0 +1,23 @@
+async_test(t => {
+  const frame = document.createElement("iframe");
+  frame.src = "resources/refresh.py"
+  frame.onload = t.step_func(() => {
+    // Could be better by verifying that resources/refresh.py loads too
+    if(frame.contentWindow.location.href === (new URL("resources/refreshed.txt?\u0080\u00FF", self.location)).href) { // Make sure bytes got mapped to code points of the same value
+      t.done();
+    }
+  });
+  document.body.appendChild(frame)
+}, "When navigating the Refresh header needs to be followed");
+
+async_test(t => {
+  const frame = document.createElement("iframe");
+  frame.src = "resources/multiple.asis"
+  frame.onload = t.step_func(() => {
+    // Could be better by verifying that resources/refresh.py loads too
+    if(frame.contentWindow.location.href === (new URL("resources/refreshed.txt", self.location)).href) {
+      t.done();
+    }
+  });
+  document.body.appendChild(frame)
+}, "When there's both a Refresh header and  the Refresh header wins")
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/refresh/resources/multiple.asis b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/refresh/resources/multiple.asis
new file mode 100644
index 0000000000..3026d8297b
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/refresh/resources/multiple.asis
@@ -0,0 +1,6 @@
+HTTP/1.1 200 OK
+Refresh: 0,./refreshed.txt
+Content-Type:text/html
+
+I don't understand.
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/refresh/resources/refresh.py b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/refresh/resources/refresh.py
new file mode 100644
index 0000000000..ecdd24f268
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/refresh/resources/refresh.py
@@ -0,0 +1,4 @@
+def main(request, response):
+    response.headers.set(b"Content-Type", b"text/plain")
+    response.headers.set(b"Refresh", b"0;./refreshed.txt?\x80\xFF") # Test byte to Unicode conversion
+    response.content = u"Not refreshed.\n"
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/refresh/resources/refreshed.txt b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/refresh/resources/refreshed.txt
new file mode 100644
index 0000000000..5df065b456
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/refresh/resources/refreshed.txt
@@ -0,0 +1 @@
+Have another.
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/refresh/subresource.any.js b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/refresh/subresource.any.js
new file mode 100644
index 0000000000..930dd34ad5
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/refresh/subresource.any.js
@@ -0,0 +1,6 @@
+promise_test(() => {
+  return fetch("resources/refresh.py").then(response => {
+    assert_equals(response.headers.get("refresh"), "0;./refreshed.txt?\u0080\u00FF"); // Make sure bytes got mapped to code points of the same value
+    assert_equals(response.url, (new URL("resources/refresh.py", self.location)).href);
+  });
+}, "Refresh does not affect subresources.");
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/replace-before-load/a-click-during-load.html b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/replace-before-load/a-click-during-load.html
new file mode 100644
index 0000000000..e035b1f517
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/replace-before-load/a-click-during-load.html
@@ -0,0 +1,32 @@
+
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/replace-before-load/a-click-during-pageshow.html b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/replace-before-load/a-click-during-pageshow.html
new file mode 100644
index 0000000000..006ce531e0
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/replace-before-load/a-click-during-pageshow.html
@@ -0,0 +1,32 @@
+
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/replace-before-load/a-click.html b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/replace-before-load/a-click.html
new file mode 100644
index 0000000000..be7d1a9849
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/replace-before-load/a-click.html
@@ -0,0 +1,30 @@
+
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/replace-before-load/a-user-click-during-load.html b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/replace-before-load/a-user-click-during-load.html
new file mode 100644
index 0000000000..811c828331
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/replace-before-load/a-user-click-during-load.html
@@ -0,0 +1,36 @@
+
+
+
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/replace-before-load/a-user-click-during-pageshow.html b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/replace-before-load/a-user-click-during-pageshow.html
new file mode 100644
index 0000000000..6621b081e1
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/replace-before-load/a-user-click-during-pageshow.html
@@ -0,0 +1,36 @@
+
+
+
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/replace-before-load/a-user-click.html b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/replace-before-load/a-user-click.html
new file mode 100644
index 0000000000..c9034f3573
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/replace-before-load/a-user-click.html
@@ -0,0 +1,34 @@
+
+
+
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/replace-before-load/form-requestsubmit-during-load.html b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/replace-before-load/form-requestsubmit-during-load.html
new file mode 100644
index 0000000000..0dee49edb3
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/replace-before-load/form-requestsubmit-during-load.html
@@ -0,0 +1,41 @@
+
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/replace-before-load/form-requestsubmit-during-pageshow.html b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/replace-before-load/form-requestsubmit-during-pageshow.html
new file mode 100644
index 0000000000..0cf0838496
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/replace-before-load/form-requestsubmit-during-pageshow.html
@@ -0,0 +1,41 @@
+
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/replace-before-load/form-requestsubmit.html b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/replace-before-load/form-requestsubmit.html
new file mode 100644
index 0000000000..80beb3718b
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/replace-before-load/form-requestsubmit.html
@@ -0,0 +1,39 @@
+
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/replace-before-load/form-submit-button-click-during-load.html b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/replace-before-load/form-submit-button-click-during-load.html
new file mode 100644
index 0000000000..1b3a163176
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/replace-before-load/form-submit-button-click-during-load.html
@@ -0,0 +1,45 @@
+
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/replace-before-load/form-submit-button-click-during-pageshow.html b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/replace-before-load/form-submit-button-click-during-pageshow.html
new file mode 100644
index 0000000000..c0022fd0f2
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/replace-before-load/form-submit-button-click-during-pageshow.html
@@ -0,0 +1,45 @@
+
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/replace-before-load/form-submit-button-click.html b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/replace-before-load/form-submit-button-click.html
new file mode 100644
index 0000000000..873c49b5be
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/replace-before-load/form-submit-button-click.html
@@ -0,0 +1,43 @@
+
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/replace-before-load/form-submit-cross-frame-crossorigin.sub.html b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/replace-before-load/form-submit-cross-frame-crossorigin.sub.html
new file mode 100644
index 0000000000..a2ea20bf7f
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/replace-before-load/form-submit-cross-frame-crossorigin.sub.html
@@ -0,0 +1,42 @@
+
+
+
+
+
+
+

+  
+

+
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/replace-before-load/form-submit-cross-frame.html b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/replace-before-load/form-submit-cross-frame.html
new file mode 100644
index 0000000000..d647e6ad06
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/replace-before-load/form-submit-cross-frame.html
@@ -0,0 +1,40 @@
+
+
+
+
+
+
+

+  
+

+
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/replace-before-load/form-submit-during-load.html b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/replace-before-load/form-submit-during-load.html
new file mode 100644
index 0000000000..2a60f44fc6
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/replace-before-load/form-submit-during-load.html
@@ -0,0 +1,41 @@
+
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/replace-before-load/form-submit-during-pageshow.html b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/replace-before-load/form-submit-during-pageshow.html
new file mode 100644
index 0000000000..886bf469a2
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/replace-before-load/form-submit-during-pageshow.html
@@ -0,0 +1,41 @@
+
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/replace-before-load/form-submit-popup-crossorigin.sub.html b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/replace-before-load/form-submit-popup-crossorigin.sub.html
new file mode 100644
index 0000000000..d54cc81477
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/replace-before-load/form-submit-popup-crossorigin.sub.html
@@ -0,0 +1,39 @@
+
+
+
+
+
+
+

+  
+

+
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/replace-before-load/form-submit-popup.html b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/replace-before-load/form-submit-popup.html
new file mode 100644
index 0000000000..b27d54675d
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/replace-before-load/form-submit-popup.html
@@ -0,0 +1,37 @@
+
+
+
+
+
+
+

+  
+

+
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/replace-before-load/form-submit.html b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/replace-before-load/form-submit.html
new file mode 100644
index 0000000000..eace0b0a69
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/replace-before-load/form-submit.html
@@ -0,0 +1,39 @@
+
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/replace-before-load/history-pushstate-during-load.html b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/replace-before-load/history-pushstate-during-load.html
new file mode 100644
index 0000000000..233d80d8d7
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/replace-before-load/history-pushstate-during-load.html
@@ -0,0 +1,28 @@
+
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/replace-before-load/history-pushstate-during-pageshow.html b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/replace-before-load/history-pushstate-during-pageshow.html
new file mode 100644
index 0000000000..a4e83baf1d
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/replace-before-load/history-pushstate-during-pageshow.html
@@ -0,0 +1,29 @@
+
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/replace-before-load/history-pushstate.html b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/replace-before-load/history-pushstate.html
new file mode 100644
index 0000000000..2faef7c319
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/replace-before-load/history-pushstate.html
@@ -0,0 +1,22 @@
+
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/replace-before-load/iframe-src-during-load.html b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/replace-before-load/iframe-src-during-load.html
new file mode 100644
index 0000000000..83f26b2aa9
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/replace-before-load/iframe-src-during-load.html
@@ -0,0 +1,31 @@
+
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/replace-before-load/iframe-src-during-pageshow.html b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/replace-before-load/iframe-src-during-pageshow.html
new file mode 100644
index 0000000000..61345cf7f9
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/replace-before-load/iframe-src-during-pageshow.html
@@ -0,0 +1,31 @@
+
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/replace-before-load/iframe-src.html b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/replace-before-load/iframe-src.html
new file mode 100644
index 0000000000..47407c106e
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/replace-before-load/iframe-src.html
@@ -0,0 +1,39 @@
+
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/replace-before-load/location-assign-during-load.html b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/replace-before-load/location-assign-during-load.html
new file mode 100644
index 0000000000..2b4ac49533
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/replace-before-load/location-assign-during-load.html
@@ -0,0 +1,31 @@
+
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/replace-before-load/location-assign-during-pageshow.html b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/replace-before-load/location-assign-during-pageshow.html
new file mode 100644
index 0000000000..0f84cbe246
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/replace-before-load/location-assign-during-pageshow.html
@@ -0,0 +1,31 @@
+
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/replace-before-load/location-assign-user-click.html b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/replace-before-load/location-assign-user-click.html
new file mode 100644
index 0000000000..785ec024e0
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/replace-before-load/location-assign-user-click.html
@@ -0,0 +1,34 @@
+
+
+
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/replace-before-load/location-assign.html b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/replace-before-load/location-assign.html
new file mode 100644
index 0000000000..53ea96ffea
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/replace-before-load/location-assign.html
@@ -0,0 +1,25 @@
+
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/replace-before-load/location-setter-during-load.html b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/replace-before-load/location-setter-during-load.html
new file mode 100644
index 0000000000..e4c8ca80a1
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/replace-before-load/location-setter-during-load.html
@@ -0,0 +1,76 @@
+
+
+Replace during the load event, triggered by location setters
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/replace-before-load/location-setter-during-pageshow.html b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/replace-before-load/location-setter-during-pageshow.html
new file mode 100644
index 0000000000..9997783ff5
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/replace-before-load/location-setter-during-pageshow.html
@@ -0,0 +1,77 @@
+
+
+Replace during the pageshow event, triggered by location setters
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/replace-before-load/location-setter-user-click.html b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/replace-before-load/location-setter-user-click.html
new file mode 100644
index 0000000000..9276327f1a
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/replace-before-load/location-setter-user-click.html
@@ -0,0 +1,82 @@
+
+
+No replace before load, triggered by location setters called as part of user-initiated clicks
+
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/replace-before-load/location-setter-user-mouseup.html b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/replace-before-load/location-setter-user-mouseup.html
new file mode 100644
index 0000000000..9068e5a116
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/replace-before-load/location-setter-user-mouseup.html
@@ -0,0 +1,89 @@
+
+
+No replace before load, triggered by location setters called as part of user-initiated mouseups
+
+
+
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/replace-before-load/location-setter.html b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/replace-before-load/location-setter.html
new file mode 100644
index 0000000000..b8049f084b
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/replace-before-load/location-setter.html
@@ -0,0 +1,58 @@
+
+
+Replace before load, triggered by location setters
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/replace-before-load/resources/code-injector.html b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/replace-before-load/resources/code-injector.html
new file mode 100644
index 0000000000..73dacf0d76
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/replace-before-load/resources/code-injector.html
@@ -0,0 +1,9 @@
+
+
+Subframe
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/replace-before-load/resources/helpers.js b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/replace-before-load/resources/helpers.js
new file mode 100644
index 0000000000..58102aa925
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/replace-before-load/resources/helpers.js
@@ -0,0 +1,89 @@
+window.waitForLoad = (t, iframe, urlRelativeToThisDocument) => {
+  return new Promise(resolve => {
+    iframe.addEventListener("load", t.step_func(() => {
+      assert_equals(iframe.contentWindow.location.href, (new URL(urlRelativeToThisDocument, location.href)).href);
+
+      // Wait a bit longer to ensure all history stuff has settled, e.g. the document is "completely loaded"
+      // (which happens from a queued task).
+      setTimeout(resolve, 0);
+    }), { once: true });
+  });
+};
+
+window.waitForLoadAllowingIntermediateLoads = (t, iframe, urlRelativeToThisDocument) => {
+  return new Promise(resolve => {
+    const handler = t.step_func(() => {
+      if (iframe.contentWindow.location.href === (new URL(urlRelativeToThisDocument, location.href)).href) {
+        // Wait a bit longer to ensure all history stuff has settled, e.g. the document is "completely loaded"
+        // (which happens from a queued task).
+        setTimeout(resolve, 0);
+        iframe.removeEventListener("load", handler);
+      }
+    });
+
+    iframe.addEventListener("load", handler);
+  });
+};
+
+window.waitForMessage = () => {
+  return new Promise(resolve => {
+    window.addEventListener("message", e => {
+      resolve(e.data);
+    }, { once: true });
+  });
+};
+
+window.setupSentinelIframe = async (t) => {
+  // If this iframe gets navigated by history.back(), then the iframe under test did not, so we did a replace.
+  const sentinelIframe = document.createElement("iframe");
+  sentinelIframe.src = "/common/blank.html?sentinelstart";
+  document.body.append(sentinelIframe);
+  t.add_cleanup(() => sentinelIframe.remove());
+
+  await waitForLoad(t, sentinelIframe, "/common/blank.html?sentinelstart");
+
+  sentinelIframe.src = "/common/blank.html?sentinelend";
+  await waitForLoad(t, sentinelIframe, "/common/blank.html?sentinelend");
+
+  return sentinelIframe;
+};
+
+window.checkSentinelIframe = async (t, sentinelIframe) => {
+  // Go back. Since iframe should have done a replace, this should move sentinelIframe back, not iframe.
+  history.back();
+  await waitForLoad(t, sentinelIframe, "/common/blank.html?sentinelstart");
+};
+
+window.insertIframe = (t, url, name) => {
+  const iframe = document.createElement("iframe");
+  iframe.src = url;
+
+  // In at least Chromium, window name targeting for form submission doesn't work if the name is set
+  // after the iframe is inserted into the DOM. So we can't just have callers do this themselves.
+  if (name) {
+    iframe.name = name;
+  }
+
+  document.body.append(iframe);
+
+  // Intentionally not including the following:
+  //  t.add_cleanup(() => iframe.remove());
+  // Doing so breaks some of the testdriver.js tests with "cannot find window" errors.
+  return iframe;
+};
+
+// TODO(domenic): clean up other tests in the parent directory to use this.
+window.absoluteURL = relativeURL => {
+  return (new URL(relativeURL, location.href)).href;
+};
+
+// TODO(domenic): clean up other tests in the parent directory to use this.
+window.codeInjectorURL = code => {
+  return absoluteURL("resources/code-injector.html?pipe=sub(none)&code=" + encodeURIComponent(code));
+};
+
+window.changeURLHost = (url, newHost) => {
+  const urlObj = new URL(url);
+  urlObj.host = newHost;
+  return urlObj.href;
+};
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/replace-before-load/resources/message-opener.html b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/replace-before-load/resources/message-opener.html
new file mode 100644
index 0000000000..b6f9d31358
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/replace-before-load/resources/message-opener.html
@@ -0,0 +1,8 @@
+
+
+Popup
+
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/replace-before-load/resources/slow-code-injector.html b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/replace-before-load/resources/slow-code-injector.html
new file mode 100644
index 0000000000..b7e99dcbfa
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/replace-before-load/resources/slow-code-injector.html
@@ -0,0 +1,16 @@
+
+
+Subframe
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/replace-before-load/resources/slow-message-source-with-history-and-location.html b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/replace-before-load/resources/slow-message-source-with-history-and-location.html
new file mode 100644
index 0000000000..da279ebf82
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/replace-before-load/resources/slow-message-source-with-history-and-location.html
@@ -0,0 +1,16 @@
+
+
+Subframe or popup
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/replace-before-load/window-open-popup-during-load.html b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/replace-before-load/window-open-popup-during-load.html
new file mode 100644
index 0000000000..5308c01c39
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/replace-before-load/window-open-popup-during-load.html
@@ -0,0 +1,67 @@
+
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/replace-before-load/window-open-popup-during-pageshow.html b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/replace-before-load/window-open-popup-during-pageshow.html
new file mode 100644
index 0000000000..065d933225
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/replace-before-load/window-open-popup-during-pageshow.html
@@ -0,0 +1,67 @@
+
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/replace-before-load/window-open-popup.html b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/replace-before-load/window-open-popup.html
new file mode 100644
index 0000000000..7b3e05f8f6
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/replace-before-load/window-open-popup.html
@@ -0,0 +1,49 @@
+
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/replace-before-load/window-open-self-during-load.html b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/replace-before-load/window-open-self-during-load.html
new file mode 100644
index 0000000000..255601ba8d
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/replace-before-load/window-open-self-during-load.html
@@ -0,0 +1,29 @@
+
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/replace-before-load/window-open-self-during-pageshow.html b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/replace-before-load/window-open-self-during-pageshow.html
new file mode 100644
index 0000000000..a8327cfac3
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/replace-before-load/window-open-self-during-pageshow.html
@@ -0,0 +1,29 @@
+
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/replace-before-load/window-open-self.html b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/replace-before-load/window-open-self.html
new file mode 100644
index 0000000000..10e8f38001
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/replace-before-load/window-open-self.html
@@ -0,0 +1,23 @@
+
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/resources/blank.html b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/resources/blank.html
new file mode 100644
index 0000000000..c50eddd41f
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/resources/blank.html
@@ -0,0 +1 @@
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/resources/child-navigates-parent-cross-origin-inner.html b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/resources/child-navigates-parent-cross-origin-inner.html
new file mode 100644
index 0000000000..72b92c8061
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/resources/child-navigates-parent-cross-origin-inner.html
@@ -0,0 +1,20 @@
+
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/resources/child-navigates-parent-destination.html b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/resources/child-navigates-parent-destination.html
new file mode 100644
index 0000000000..bb8ba4e698
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/resources/child-navigates-parent-destination.html
@@ -0,0 +1,4 @@
+
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/resources/child-navigates-parent-location-initial.html b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/resources/child-navigates-parent-location-initial.html
new file mode 100644
index 0000000000..a4a1713a27
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/resources/child-navigates-parent-location-initial.html
@@ -0,0 +1,3 @@
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/resources/child-navigates-parent-location-inner.html b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/resources/child-navigates-parent-location-inner.html
new file mode 100644
index 0000000000..4d7d24730f
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/resources/child-navigates-parent-location-inner.html
@@ -0,0 +1,5 @@
+
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/resources/child-navigates-parent-submit-initial.html b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/resources/child-navigates-parent-submit-initial.html
new file mode 100644
index 0000000000..943708e0cd
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/resources/child-navigates-parent-submit-initial.html
@@ -0,0 +1,3 @@
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/resources/child-navigates-parent-submit-inner.html b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/resources/child-navigates-parent-submit-inner.html
new file mode 100644
index 0000000000..0b49e13d65
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/resources/child-navigates-parent-submit-inner.html
@@ -0,0 +1,6 @@
+
+

+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/resources/click.html b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/resources/click.html
new file mode 100644
index 0000000000..8cb03b74d5
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/resources/click.html
@@ -0,0 +1,4 @@
+
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/resources/document-domain-set-to-site.sub.html b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/resources/document-domain-set-to-site.sub.html
new file mode 100644
index 0000000000..3c4355c452
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/resources/document-domain-set-to-site.sub.html
@@ -0,0 +1,7 @@
+
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/resources/form.html b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/resources/form.html
new file mode 100644
index 0000000000..6523a82b39
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/resources/form.html
@@ -0,0 +1,5 @@
+
+
+form navigation
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/resources/href.html b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/resources/href.html
new file mode 100644
index 0000000000..eccadadf41
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/resources/href.html
@@ -0,0 +1,5 @@
+
+
+href
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/resources/message-opener.html b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/resources/message-opener.html
new file mode 100644
index 0000000000..b6f9d31358
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/resources/message-opener.html
@@ -0,0 +1,8 @@
+
+
+Popup
+
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/resources/message-parent.html b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/resources/message-parent.html
new file mode 100644
index 0000000000..3656358f2d
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/resources/message-parent.html
@@ -0,0 +1,3 @@
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/resources/multi-globals-subframe-1.sub.html b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/resources/multi-globals-subframe-1.sub.html
new file mode 100644
index 0000000000..a87b2fd2be
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/resources/multi-globals-subframe-1.sub.html
@@ -0,0 +1,10 @@
+
+
+Multi-globals test outer subframe
+
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/resources/multi-globals-subframe-2.sub.html b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/resources/multi-globals-subframe-2.sub.html
new file mode 100644
index 0000000000..593c428a67
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/resources/multi-globals-subframe-2.sub.html
@@ -0,0 +1,8 @@
+
+
+Multi-globals test inner subframe
+
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/resources/no-cache-single-redirect.py b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/resources/no-cache-single-redirect.py
new file mode 100644
index 0000000000..9d3aff817d
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/resources/no-cache-single-redirect.py
@@ -0,0 +1,21 @@
+# This handler receives requests identified by UUIDs that have mandatory
+# `location` query parameters. Every other request for the same URL will result
+# in a redirect to the URL described by `location`. When we don't redirect, we
+# simply return the HTML document "No redirect".
+def main(request, response):
+    response.headers.set(b"Cache-Control", b"no-store")
+
+    uuid = request.GET.first(b"uuid")
+    value = request.server.stash.take(uuid)
+
+    if value is None:
+        response.status = 302
+        location = request.GET.first(b"location")
+        response.headers.set(b"Location", location)
+        # Ensure that the next time this uuid is request, we don't redirect.
+        request.server.stash.put(uuid, "sentinel value")
+    else:
+        # If we're in this branch, then `value` is not none, but the stash now
+        # has `None` associated with `uuid`, which means on the next request for
+        # this `uuid` we'll end up in the above branch instead.
+        return ([(b"Content-Type", b"text/html")], b"No redirect")
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/resources/page-that-post-message-to-opener.html b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/resources/page-that-post-message-to-opener.html
new file mode 100644
index 0000000000..65a0c82149
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/resources/page-that-post-message-to-opener.html
@@ -0,0 +1,6 @@
+
+
+Page that postMessage to its opener
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/resources/page-with-top-navigating-iframe.html b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/resources/page-with-top-navigating-iframe.html
new file mode 100644
index 0000000000..568e44296f
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/resources/page-with-top-navigating-iframe.html
@@ -0,0 +1,24 @@
+
+
+
+
+
+Page that embeds an iframe that navigates its top
+
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/resources/portable-document-format-sample-valid.pdf b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/resources/portable-document-format-sample-valid.pdf
new file mode 100644
index 0000000000..d008b1f23a
Binary files /dev/null and b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/resources/portable-document-format-sample-valid.pdf differ
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/resources/portable-document-format-sample-valid.pdf.headers b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/resources/portable-document-format-sample-valid.pdf.headers
new file mode 100644
index 0000000000..5a8e57e482
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/resources/portable-document-format-sample-valid.pdf.headers
@@ -0,0 +1 @@
+Content-Type: application/pdf
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/resources/redirect.py b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/resources/redirect.py
new file mode 100644
index 0000000000..3c78c256b0
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/resources/redirect.py
@@ -0,0 +1,4 @@
+def main(request, response):
+    location = request.GET.first(b"location")
+    response.status = 302
+    response.headers.set(b"Location", location)
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/resources/top-navigating-page.html b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/resources/top-navigating-page.html
new file mode 100644
index 0000000000..557f408fba
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/resources/top-navigating-page.html
@@ -0,0 +1,15 @@
+
+
+Page that navigates its top
+
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/resources/wait-for-messages.js b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/resources/wait-for-messages.js
new file mode 100644
index 0000000000..62ddec49f1
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/resources/wait-for-messages.js
@@ -0,0 +1,15 @@
+// Asynchronous function that waits for the given number of messages to be
+// received by `window`, then returns those messages.
+function waitForMessages(numMessages) {
+  return new Promise((resolve) => {
+    const messages = [];
+
+    window.addEventListener("message", function handler(evt) {
+      messages.push(evt.data);
+      if (messages.length == numMessages) {
+        window.removeEventListener("message", handler);
+        resolve(messages);
+      }
+    });
+  });
+}
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/resources/xhtml-and-non-utf-8.xhtml b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/resources/xhtml-and-non-utf-8.xhtml
new file mode 100644
index 0000000000..3aacf33f1c
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/resources/xhtml-and-non-utf-8.xhtml
@@ -0,0 +1,9 @@
+
+
+
+  
+  A test document used when you need something very non-default
+
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/source/navigate-child-function-parent-then-fragment.html b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/source/navigate-child-function-parent-then-fragment.html
new file mode 100644
index 0000000000..d01ef4c77a
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/source/navigate-child-function-parent-then-fragment.html
@@ -0,0 +1,36 @@
+
+
+
+  Set location from a parent, then do a fragment navigation from within the
+  frame.
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/source/navigate-child-function-parent.html b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/source/navigate-child-function-parent.html
new file mode 100644
index 0000000000..2efc3a6b4a
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/source/navigate-child-function-parent.html
@@ -0,0 +1,18 @@
+
+
+Set location from a parent
+
+
+

+
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/source/navigate-child-function-src.html b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/source/navigate-child-function-src.html
new file mode 100644
index 0000000000..e21260cd35
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/source/navigate-child-function-src.html
@@ -0,0 +1,18 @@
+
+
+Set src from a function called from a parent
+
+
+

+
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/source/navigate-child-function.html b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/source/navigate-child-function.html
new file mode 100644
index 0000000000..c6fa765b89
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/source/navigate-child-function.html
@@ -0,0 +1,19 @@
+
+
+Set location from a function called from a parent
+
+
+

+
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/source/navigate-child-src-about-blank.html b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/source/navigate-child-src-about-blank.html
new file mode 100644
index 0000000000..479019d847
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/source/navigate-child-src-about-blank.html
@@ -0,0 +1,20 @@
+
+
+Set the src attribute to about:blank and check referrer
+
+
+

+
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/source/support/dummy.html b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/source/support/dummy.html
new file mode 100644
index 0000000000..0638657093
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/source/support/dummy.html
@@ -0,0 +1,3 @@
+
+
+
Hello.
\ No newline at end of file
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/source/support/location-set.html b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/source/support/location-set.html
new file mode 100644
index 0000000000..ad733afac3
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/source/support/location-set.html
@@ -0,0 +1,8 @@
+
+
+
+
Hello. Go.
\ No newline at end of file
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/source/support/set-parent-src.html b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/source/support/set-parent-src.html
new file mode 100644
index 0000000000..9d45be8c8d
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/source/support/set-parent-src.html
@@ -0,0 +1,8 @@
+
+
+
+
Hello. Go.
\ No newline at end of file
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/top-level-data-url.window.js b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/top-level-data-url.window.js
new file mode 100644
index 0000000000..ca321f106a
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/navigating-across-documents/top-level-data-url.window.js
@@ -0,0 +1,20 @@
+// META: timeout=long
+
+const dataURL = `data:text/html,...`;
+const encodedDataURL = encodeURIComponent(dataURL);
+
+[dataURL, `resources/redirect.py?location=${encodedDataURL}`].forEach(url => {
+  [undefined, "opener", "noopener", "noreferrer"].forEach(opener => {
+    async_test(t => {
+      const popup = window.open(url, "", opener);
+      t.step_timeout(() => {
+        if (opener === "noopener" || opener == "noreferrer") {
+          assert_equals(popup, null);
+        } else {
+          assert_true(popup.closed);
+        }
+        t.done();
+      }, 1500);
+    }, `Navigating a popup using window.open("${url}", "", "${opener}")`);
+  });
+});
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/overlapping-navigations-and-traversals/README.md b/testing/web-platform/tests/html/browsers/browsing-the-web/overlapping-navigations-and-traversals/README.md
new file mode 100644
index 0000000000..cc313a155a
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/overlapping-navigations-and-traversals/README.md
@@ -0,0 +1,11 @@
+# Overlapping navigation and traversal tests
+
+These tests follow the behavior outlined in the
+[session history rewrite](https://github.com/whatwg/html/pull/6315).
+
+ discusses these results.
+
+We are not yet 100% sure on this behavior, especially for overlapping
+traversal cases where the spec is complex and some of the tests don't
+seem to match any browser. Please feel free to discuss on the spec
+issue.
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/overlapping-navigations-and-traversals/anchor-fragment-history-back-on-click.html b/testing/web-platform/tests/html/browsers/browsing-the-web/overlapping-navigations-and-traversals/anchor-fragment-history-back-on-click.html
new file mode 100644
index 0000000000..a081bec514
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/overlapping-navigations-and-traversals/anchor-fragment-history-back-on-click.html
@@ -0,0 +1,40 @@
+
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/overlapping-navigations-and-traversals/cross-document-nav-cross-document-nav.html b/testing/web-platform/tests/html/browsers/browsing-the-web/overlapping-navigations-and-traversals/cross-document-nav-cross-document-nav.html
new file mode 100644
index 0000000000..99d9a8fbb1
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/overlapping-navigations-and-traversals/cross-document-nav-cross-document-nav.html
@@ -0,0 +1,30 @@
+
+
+Cross-document navigation after a cross-document navigation
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/overlapping-navigations-and-traversals/cross-document-nav-cross-document-traversal.html b/testing/web-platform/tests/html/browsers/browsing-the-web/overlapping-navigations-and-traversals/cross-document-nav-cross-document-traversal.html
new file mode 100644
index 0000000000..341f66a996
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/overlapping-navigations-and-traversals/cross-document-nav-cross-document-traversal.html
@@ -0,0 +1,38 @@
+
+
+Cross-document traversal during cross-document navigation
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/overlapping-navigations-and-traversals/cross-document-nav-same-document-nav.html b/testing/web-platform/tests/html/browsers/browsing-the-web/overlapping-navigations-and-traversals/cross-document-nav-same-document-nav.html
new file mode 100644
index 0000000000..99525cb3ed
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/overlapping-navigations-and-traversals/cross-document-nav-same-document-nav.html
@@ -0,0 +1,44 @@
+
+
+Cross-document navigation after a same-document navigation
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/overlapping-navigations-and-traversals/cross-document-nav-same-document-traversal.html b/testing/web-platform/tests/html/browsers/browsing-the-web/overlapping-navigations-and-traversals/cross-document-nav-same-document-traversal.html
new file mode 100644
index 0000000000..2ff91be7e1
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/overlapping-navigations-and-traversals/cross-document-nav-same-document-traversal.html
@@ -0,0 +1,37 @@
+
+
+Same-document traversal during cross-document navigation
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/overlapping-navigations-and-traversals/cross-document-nav-stop.html b/testing/web-platform/tests/html/browsers/browsing-the-web/overlapping-navigations-and-traversals/cross-document-nav-stop.html
new file mode 100644
index 0000000000..0803d6c8d1
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/overlapping-navigations-and-traversals/cross-document-nav-stop.html
@@ -0,0 +1,21 @@
+
+
+Stop during cross-document navigations
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/overlapping-navigations-and-traversals/cross-document-traversal-cross-document-nav.html b/testing/web-platform/tests/html/browsers/browsing-the-web/overlapping-navigations-and-traversals/cross-document-traversal-cross-document-nav.html
new file mode 100644
index 0000000000..5141259d08
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/overlapping-navigations-and-traversals/cross-document-traversal-cross-document-nav.html
@@ -0,0 +1,77 @@
+
+
+Cross-document navigations during cross-document traversals
+
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/overlapping-navigations-and-traversals/cross-document-traversal-cross-document-traversal.html b/testing/web-platform/tests/html/browsers/browsing-the-web/overlapping-navigations-and-traversals/cross-document-traversal-cross-document-traversal.html
new file mode 100644
index 0000000000..97907df23d
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/overlapping-navigations-and-traversals/cross-document-traversal-cross-document-traversal.html
@@ -0,0 +1,160 @@
+
+
+Cross-document traversals during cross-document traversals
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/overlapping-navigations-and-traversals/cross-document-traversal-same-document-nav.html b/testing/web-platform/tests/html/browsers/browsing-the-web/overlapping-navigations-and-traversals/cross-document-traversal-same-document-nav.html
new file mode 100644
index 0000000000..df6258f9b3
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/overlapping-navigations-and-traversals/cross-document-traversal-same-document-nav.html
@@ -0,0 +1,66 @@
+
+
+Same-document navigations during cross-document traversals
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/overlapping-navigations-and-traversals/cross-document-traversal-same-document-traversal.html b/testing/web-platform/tests/html/browsers/browsing-the-web/overlapping-navigations-and-traversals/cross-document-traversal-same-document-traversal.html
new file mode 100644
index 0000000000..3c37c46b64
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/overlapping-navigations-and-traversals/cross-document-traversal-same-document-traversal.html
@@ -0,0 +1,94 @@
+
+
+Same-document traversals during cross-document traversals
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/overlapping-navigations-and-traversals/cross-document-traversal-stop.html b/testing/web-platform/tests/html/browsers/browsing-the-web/overlapping-navigations-and-traversals/cross-document-traversal-stop.html
new file mode 100644
index 0000000000..6202eb9226
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/overlapping-navigations-and-traversals/cross-document-traversal-stop.html
@@ -0,0 +1,42 @@
+
+
+Stop during cross-document traversals
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/overlapping-navigations-and-traversals/forward-to-pruned-entry.html b/testing/web-platform/tests/html/browsers/browsing-the-web/overlapping-navigations-and-traversals/forward-to-pruned-entry.html
new file mode 100644
index 0000000000..8e1c349e21
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/overlapping-navigations-and-traversals/forward-to-pruned-entry.html
@@ -0,0 +1,24 @@
+
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/overlapping-navigations-and-traversals/nav-cancelation-1.html b/testing/web-platform/tests/html/browsers/browsing-the-web/overlapping-navigations-and-traversals/nav-cancelation-1.html
new file mode 100644
index 0000000000..b52fa04977
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/overlapping-navigations-and-traversals/nav-cancelation-1.html
@@ -0,0 +1,62 @@
+
+
+Parent main frame cancels a same-origin child whose navigation is pending
+
+
+
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/overlapping-navigations-and-traversals/nav-cancelation-2.sub.html b/testing/web-platform/tests/html/browsers/browsing-the-web/overlapping-navigations-and-traversals/nav-cancelation-2.sub.html
new file mode 100644
index 0000000000..c081513b7c
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/overlapping-navigations-and-traversals/nav-cancelation-2.sub.html
@@ -0,0 +1,178 @@
+
+
+Grandparent main frame cancels a navigation in a cross-origin grandchild
+
+
+
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/overlapping-navigations-and-traversals/resources/helpers.mjs b/testing/web-platform/tests/html/browsers/browsing-the-web/overlapping-navigations-and-traversals/resources/helpers.mjs
new file mode 100644
index 0000000000..7938497920
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/overlapping-navigations-and-traversals/resources/helpers.mjs
@@ -0,0 +1,52 @@
+export function createIframe(t) {
+  return new Promise((resolve, reject) => {
+    const iframe = document.createElement("iframe");
+    iframe.onload = () => resolve(iframe);
+    iframe.onerror = () => reject(new Error("Could not load iframe"));
+    iframe.src = "/common/blank.html";
+
+    t.add_cleanup(() => iframe.remove());
+    document.body.append(iframe);
+  });
+}
+
+export function delay(t, ms) {
+  return new Promise(resolve => t.step_timeout(resolve, ms));
+}
+
+export function waitForLoad(obj) {
+  return new Promise(resolve => {
+    obj.addEventListener("load", resolve, { once: true });
+  });
+}
+
+export function waitForHashchange(obj) {
+  return new Promise(resolve => {
+    obj.addEventListener("hashchange", resolve, { once: true });
+  });
+}
+
+export function waitForPopstate(obj) {
+  return new Promise(resolve => {
+    obj.addEventListener("popstate", resolve, { once: true });
+  });
+}
+
+// This is used when we want to end the test by asserting some load doesn't
+// happen, but we're not sure how long to wait. We could just wait a long-ish
+// time (e.g. a second), but that makes the tests slow. Instead, assume that
+// network loads take roughly the same time. Then, you can use this function to
+// wait a small multiple of the duration of a separate iframe load; this should
+// be long enough to catch any problems.
+export async function waitForPotentialNetworkLoads(t) {
+  const before = performance.now();
+
+  // Sometimes we're doing something, like a traversal, which cancels our first
+  // attempt at iframe loading. In that case we bail out after 100 ms and try
+  // again. (Better ideas welcome...)
+  await Promise.race([createIframe(t), delay(t, 100)]);
+  await createIframe(t);
+
+  const after = performance.now();
+  await delay(t, after - before);
+}
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/overlapping-navigations-and-traversals/resources/nav-cancelation-2-helper.html b/testing/web-platform/tests/html/browsers/browsing-the-web/overlapping-navigations-and-traversals/resources/nav-cancelation-2-helper.html
new file mode 100644
index 0000000000..a0b4acda2e
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/overlapping-navigations-and-traversals/resources/nav-cancelation-2-helper.html
@@ -0,0 +1,18 @@
+
+
+Page with child frame that navigates slowly
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/overlapping-navigations-and-traversals/resources/slow.py b/testing/web-platform/tests/html/browsers/browsing-the-web/overlapping-navigations-and-traversals/resources/slow.py
new file mode 100644
index 0000000000..5ee32a60ba
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/overlapping-navigations-and-traversals/resources/slow.py
@@ -0,0 +1,7 @@
+# Like /common/slow.py except with text/html content-type so that it won't
+# trigger strange parts of the 
+
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/read-media/pageload-video.html b/testing/web-platform/tests/html/browsers/browsing-the-web/read-media/pageload-video.html
new file mode 100644
index 0000000000..9bce1f0c36
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/read-media/pageload-video.html
@@ -0,0 +1,28 @@
+
+
+Media documents: video
+
+
+
+
+
+
+

+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/read-media/resources/iframe-document.sub.html b/testing/web-platform/tests/html/browsers/browsing-the-web/read-media/resources/iframe-document.sub.html
new file mode 100644
index 0000000000..69523efa7a
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/read-media/resources/iframe-document.sub.html
@@ -0,0 +1,5 @@
+
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/read-text/load-text-plain.html b/testing/web-platform/tests/html/browsers/browsing-the-web/read-text/load-text-plain.html
new file mode 100644
index 0000000000..ad75631533
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/read-text/load-text-plain.html
@@ -0,0 +1,40 @@
+
+Page load processing model for text files
+
+
+
+
+

+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/remote-context-helper-tests/addHTML.window.js b/testing/web-platform/tests/html/browsers/browsing-the-web/remote-context-helper-tests/addHTML.window.js
new file mode 100644
index 0000000000..0c093cc462
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/remote-context-helper-tests/addHTML.window.js
@@ -0,0 +1,20 @@
+// META: title=RemoteContextWrapper addHtml
+// META: script=/common/dispatcher/dispatcher.js
+// META: script=/common/get-host-info.sub.js
+// META: script=/common/utils.js
+// META: script=/html/browsers/browsing-the-web/remote-context-helper/resources/remote-context-helper.js
+// META: script=./resources/test-helper.js
+
+'use strict';
+
+// This tests that arguments passed to the constructor are respected.
+promise_test(async t => {
+  const rcHelper = new RemoteContextHelper();
+
+  const main = await rcHelper.addWindow();
+  await assertSimplestScriptRuns(main);
+
+  await main.addHTML('
div-content
');
+  await assertFunctionRuns(
+      main, () => document.getElementById('div-id').textContent, 'div-content');
+});
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/remote-context-helper-tests/addIframe.window.js b/testing/web-platform/tests/html/browsers/browsing-the-web/remote-context-helper-tests/addIframe.window.js
new file mode 100644
index 0000000000..c1630e4680
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/remote-context-helper-tests/addIframe.window.js
@@ -0,0 +1,40 @@
+// META: title=RemoteContextWrapper addIframe
+// META: script=/common/dispatcher/dispatcher.js
+// META: script=/common/get-host-info.sub.js
+// META: script=/common/utils.js
+// META: script=/html/browsers/browsing-the-web/remote-context-helper/resources/remote-context-helper.js
+// META: script=./resources/test-helper.js
+
+'use strict';
+
+// This tests that arguments passed to the constructor are respected.
+promise_test(async t => {
+  // Precondition: Test was loaded from the HTTP_ORIGIN.
+  assert_equals(
+      location.origin, get_host_info()['HTTP_ORIGIN'],
+      'test window was loaded on HTTP_ORIGIN');
+
+  const rcHelper = new RemoteContextHelper();
+
+  const main = await rcHelper.addWindow();
+
+  const headerName = 'x-wpt-test-header';
+  const headerValue = 'test-escaping()';
+  const iframe = await main.addIframe(
+      /*extraConfig=*/ {
+        origin: 'HTTP_REMOTE_ORIGIN',
+        scripts: ['/common/get-host-info.sub.js', './resources/test-script.js'],
+        headers: [[headerName, headerValue]],
+      },
+      /*attributes=*/ {id: 'test-id'},
+  );
+
+  await assertSimplestScriptRuns(iframe);
+  await assertFunctionRuns(iframe, () => testFunction(), 'testFunction exists');
+  await assertOriginIsAsExpected(iframe, get_host_info()['HTTP_REMOTE_ORIGIN']);
+  await assertHeaderIsAsExpected(iframe, headerName, headerValue);
+
+  assert_equals(
+      await main.executeScript(() => document.getElementById('test-id').id),
+      'test-id', 'verify id');
+});
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/remote-context-helper-tests/addScripts.window.js b/testing/web-platform/tests/html/browsers/browsing-the-web/remote-context-helper-tests/addScripts.window.js
new file mode 100644
index 0000000000..01cf06c65d
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/remote-context-helper-tests/addScripts.window.js
@@ -0,0 +1,19 @@
+// META: title=RemoteContextWrapper addScripts
+// META: script=/common/dispatcher/dispatcher.js
+// META: script=/common/get-host-info.sub.js
+// META: script=/common/utils.js
+// META: script=/html/browsers/browsing-the-web/remote-context-helper/resources/remote-context-helper.js
+// META: script=./resources/test-helper.js
+
+'use strict';
+
+// This tests that arguments passed to the constructor are respected.
+promise_test(async t => {
+  const rcHelper = new RemoteContextHelper();
+
+  const main = await rcHelper.addWindow();
+  await assertSimplestScriptRuns(main);
+
+  await main.addScripts(['./resources/test-script.js']);
+  await assertFunctionRuns(main, () => testFunction(), 'testFunction exists');
+});
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/remote-context-helper-tests/addWindow-defaults.window.js b/testing/web-platform/tests/html/browsers/browsing-the-web/remote-context-helper-tests/addWindow-defaults.window.js
new file mode 100644
index 0000000000..34fa9cd39a
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/remote-context-helper-tests/addWindow-defaults.window.js
@@ -0,0 +1,15 @@
+// META: title=RemoteContextHelper with defaults
+// META: script=/common/dispatcher/dispatcher.js
+// META: script=/common/get-host-info.sub.js
+// META: script=/common/utils.js
+// META: script=/html/browsers/browsing-the-web/remote-context-helper/resources/remote-context-helper.js
+// META: script=./resources/test-helper.js
+
+'use strict';
+
+promise_test(async t => {
+  const rcHelper = new RemoteContextHelper();
+  const main = await rcHelper.addWindow();
+  await assertSimplestScriptRuns(main);
+  await assertOriginIsAsExpected(main, location.origin);
+});
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/remote-context-helper-tests/addWindow-extra-config.window.js b/testing/web-platform/tests/html/browsers/browsing-the-web/remote-context-helper-tests/addWindow-extra-config.window.js
new file mode 100644
index 0000000000..112d2d726e
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/remote-context-helper-tests/addWindow-extra-config.window.js
@@ -0,0 +1,36 @@
+// META: title=RemoteContextHelper addWindow with extra config
+// META: script=/common/dispatcher/dispatcher.js
+// META: script=/common/get-host-info.sub.js
+// META: script=/common/utils.js
+// META: script=/html/browsers/browsing-the-web/remote-context-helper/resources/remote-context-helper.js
+// META: script=./resources/test-helper.js
+
+'use strict';
+
+// This tests that arguments passed to the constructor are respected.
+promise_test(async t => {
+  const header1Name = 'x-wpt-test-header1';
+  const header1Value = 'test-escaping1()';
+  const rcHelper = new RemoteContextHelper({
+    origin: 'HTTP_REMOTE_ORIGIN',
+    scripts: ['/common/get-host-info.sub.js', './resources/test-script.js'],
+    headers: [[header1Name, header1Value]],
+  });
+
+  const header2Name = 'x-wpt-test-header2';
+  const header2Value = 'test-escaping2()';
+  const main = await rcHelper.addWindow(
+      {
+        origin: location.origin,
+        scripts: [new URL('./resources/test-script2.js', location).toString()],
+        headers: [[header2Name, header2Value]],
+      },
+  );
+
+  await assertSimplestScriptRuns(main);
+  await assertFunctionRuns(main, () => testFunction(), 'testFunction exists');
+  await assertFunctionRuns(main, () => testFunction2(), 'testFunction2 exists');
+  await assertOriginIsAsExpected(main, location.origin);
+  await assertHeaderIsAsExpected(main, header1Name, header1Value);
+  await assertHeaderIsAsExpected(main, header2Name, header2Value);
+});
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/remote-context-helper-tests/addWindow-features.window.js b/testing/web-platform/tests/html/browsers/browsing-the-web/remote-context-helper-tests/addWindow-features.window.js
new file mode 100644
index 0000000000..329c55e626
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/remote-context-helper-tests/addWindow-features.window.js
@@ -0,0 +1,23 @@
+// META: title=RemoteContextHelper addWindow features
+// META: script=/common/dispatcher/dispatcher.js
+// META: script=/common/get-host-info.sub.js
+// META: script=/common/utils.js
+// META: script=/html/browsers/browsing-the-web/remote-context-helper/resources/remote-context-helper.js
+// META: script=./resources/test-helper.js
+
+'use strict';
+
+promise_test(async t => {
+  const rcHelper = new RemoteContextHelper();
+  {
+    const main = await rcHelper.addWindow();
+    await assertSimplestScriptRuns(main);
+    await assertWindowHasOpenerEquals(main, true);
+  }
+  {
+    const main = await rcHelper.addWindow(
+        /*extraConfig=*/ null, /*options=*/ {features: 'noopener'});
+    await assertSimplestScriptRuns(main);
+    await assertWindowHasOpenerEquals(main, false);
+  }
+});
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/remote-context-helper-tests/addWindow-invalid-origin.window.js b/testing/web-platform/tests/html/browsers/browsing-the-web/remote-context-helper-tests/addWindow-invalid-origin.window.js
new file mode 100644
index 0000000000..58aee312cc
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/remote-context-helper-tests/addWindow-invalid-origin.window.js
@@ -0,0 +1,21 @@
+// META: title=RemoteContextHelper addWindow with extra config
+// META: script=/common/dispatcher/dispatcher.js
+// META: script=/common/get-host-info.sub.js
+// META: script=/common/utils.js
+// META: script=/html/browsers/browsing-the-web/remote-context-helper/resources/remote-context-helper.js
+// META: script=./resources/test-helper.js
+
+'use strict';
+
+// This tests that arguments passed to the constructor are respected.
+promise_test(async t => {
+  const header1Name = 'x-wpt-test-header1';
+  const header1Value = 'test-escaping1()';
+  const rcHelper = new RemoteContextHelper({
+    origin: 'INVALID',
+  });
+
+  promise_rejects_js(
+      t, RangeError, rcHelper.addWindow(),
+      'Exception should be thrown for invalid origin.');
+});
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/remote-context-helper-tests/addWindow-startOn.window.js b/testing/web-platform/tests/html/browsers/browsing-the-web/remote-context-helper-tests/addWindow-startOn.window.js
new file mode 100644
index 0000000000..0f57a87638
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/remote-context-helper-tests/addWindow-startOn.window.js
@@ -0,0 +1,19 @@
+// META: title=RemoteContextHelper addWindow target
+// META: script=/common/dispatcher/dispatcher.js
+// META: script=/common/get-host-info.sub.js
+// META: script=/common/utils.js
+// META: script=/html/browsers/browsing-the-web/remote-context-helper/resources/remote-context-helper.js
+// META: script=./resources/test-helper.js
+
+'use strict';
+
+promise_test(async t => {
+  const rcHelper = new RemoteContextHelper();
+  const main = await rcHelper.addWindow({startOn: 'pageshow'});
+  await assertSimplestScriptRuns(main);
+  await assert_equals(
+      await main.executeScript(() => {
+        return executorStartEvent.type;
+      }),
+      'pageshow');
+});
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/remote-context-helper-tests/addWindow-target.window.js b/testing/web-platform/tests/html/browsers/browsing-the-web/remote-context-helper-tests/addWindow-target.window.js
new file mode 100644
index 0000000000..3f742048b4
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/remote-context-helper-tests/addWindow-target.window.js
@@ -0,0 +1,17 @@
+// META: title=RemoteContextHelper addWindow target
+// META: script=/common/dispatcher/dispatcher.js
+// META: script=/common/get-host-info.sub.js
+// META: script=/common/utils.js
+// META: script=/html/browsers/browsing-the-web/remote-context-helper/resources/remote-context-helper.js
+// META: script=./resources/test-helper.js
+
+'use strict';
+
+promise_test(async t => {
+  const rcHelper = new RemoteContextHelper();
+  const name = 'a name';
+  const main = await rcHelper.addWindow(
+      /*extraConfig=*/ null, /*options=*/ {target: name});
+  await assertSimplestScriptRuns(main);
+  await assertWindowNameEquals(main, name);
+});
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/remote-context-helper-tests/addWorker.window.js b/testing/web-platform/tests/html/browsers/browsing-the-web/remote-context-helper-tests/addWorker.window.js
new file mode 100644
index 0000000000..d4ba8b0312
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/remote-context-helper-tests/addWorker.window.js
@@ -0,0 +1,29 @@
+// META: title=RemoteContextWrapper addWorker
+// META: script=/common/dispatcher/dispatcher.js
+// META: script=/common/get-host-info.sub.js
+// META: script=/common/utils.js
+// META: script=/html/browsers/browsing-the-web/remote-context-helper/resources/remote-context-helper.js
+// META: script=./resources/test-helper.js
+
+'use strict';
+
+// This tests that arguments passed to the constructor are respected.
+promise_test(async t => {
+  const rcHelper = new RemoteContextHelper();
+
+  const main = await rcHelper.addWindow();
+
+  const headerName = 'x-wpt-test-header';
+  const headerValue = 'test-escaping()';
+  const worker = await main.addWorker(
+      {
+        scripts: ['/common/get-host-info.sub.js', './resources/test-script.js'],
+        headers: [[headerName, headerValue]],
+      },
+  );
+
+  await assertSimplestScriptRuns(worker);
+  await assertFunctionRuns(worker, () => testFunction(), 'testFunction exists');
+  await assertOriginIsAsExpected(worker, location.origin);
+  await assertHeaderIsAsExpected(worker, headerName, headerValue);
+});
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/remote-context-helper-tests/constructor.window.js b/testing/web-platform/tests/html/browsers/browsing-the-web/remote-context-helper-tests/constructor.window.js
new file mode 100644
index 0000000000..dcbb3dabbc
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/remote-context-helper-tests/constructor.window.js
@@ -0,0 +1,38 @@
+// META: title=RemoteContextHelper constructor
+// META: script=/common/dispatcher/dispatcher.js
+// META: script=/common/get-host-info.sub.js
+// META: script=/common/utils.js
+// META: script=/html/browsers/browsing-the-web/remote-context-helper/resources/remote-context-helper.js
+// META: script=./resources/test-helper.js
+
+'use strict';
+
+// This tests that arguments passed to the constructor are respected.
+promise_test(async t => {
+  // Precondition: Test was loaded from the HTTP_ORIGIN.
+  assert_equals(
+      location.origin, get_host_info()['HTTP_ORIGIN'],
+      'test window was loaded on HTTP_ORIGIN');
+
+  const headerName = 'x-wpt-test-header';
+  const headerValue = 'test-escaping()';
+  const rcHelper = new RemoteContextHelper({
+    origin: 'HTTP_REMOTE_ORIGIN',
+    scripts: [
+      '/common/get-host-info.sub.js',
+      './resources/test-script.js',
+    ],
+    headers: [[headerName, headerValue]],
+  });
+
+
+  const main = await rcHelper.addWindow();
+
+  await assertSimplestScriptRuns(main);
+  await assertFunctionRuns(main, () => testFunction(), 'testFunction exists');
+
+  // Verify that the origin is different.
+  await assertOriginIsAsExpected(main, get_host_info()['HTTP_REMOTE_ORIGIN']);
+
+  await assertHeaderIsAsExpected(main, headerName, headerValue);
+});
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/remote-context-helper-tests/createContext-bad-executorCreator.window.js b/testing/web-platform/tests/html/browsers/browsing-the-web/remote-context-helper-tests/createContext-bad-executorCreator.window.js
new file mode 100644
index 0000000000..bf24581173
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/remote-context-helper-tests/createContext-bad-executorCreator.window.js
@@ -0,0 +1,20 @@
+// META: title=RemoteContextHelper createContext with throwing/rejecting executorCreators.
+// META: script=/common/dispatcher/dispatcher.js
+// META: script=/common/get-host-info.sub.js
+// META: script=/common/utils.js
+// META: script=/html/browsers/browsing-the-web/remote-context-helper/resources/remote-context-helper.js
+
+'use strict';
+
+promise_test(async t => {
+  const rcHelper = new RemoteContextHelper();
+
+  const err = new Error('something bad!');
+  promise_rejects_exactly(
+      t, err, rcHelper.createContext({ executorCreator() { throw err; } }),
+      'Sync exception must be rethrown');
+
+  promise_rejects_exactly(
+      t, err, rcHelper.createContext({ executorCreator() { return Promise.reject(err); } }),
+      'Async rejection must be rethrown');
+});
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/remote-context-helper-tests/navigateToNew.window.js b/testing/web-platform/tests/html/browsers/browsing-the-web/remote-context-helper-tests/navigateToNew.window.js
new file mode 100644
index 0000000000..f7dd3f8325
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/remote-context-helper-tests/navigateToNew.window.js
@@ -0,0 +1,37 @@
+// META: title=RemoteContextWrapper navigateToNew
+// META: script=/common/dispatcher/dispatcher.js
+// META: script=/common/get-host-info.sub.js
+// META: script=/common/utils.js
+// META: script=/html/browsers/browsing-the-web/remote-context-helper/resources/remote-context-helper.js
+// META: script=./resources/test-helper.js
+
+'use strict';
+
+promise_test(async t => {
+  // Precondition: Test was loaded from the HTTP_ORIGIN.
+  assert_equals(
+      location.origin, get_host_info()['HTTP_ORIGIN'],
+      'test window was loaded on HTTP_ORIGIN');
+
+  const rcHelper = new RemoteContextHelper();
+
+  const main = await rcHelper.addWindow();
+
+  const headerName = 'x-wpt-test-header';
+  const headerValue = 'test-escaping()';
+  const newMain = await main.navigateToNew(
+      {
+        origin: 'HTTP_REMOTE_ORIGIN',
+        scripts: ['/common/get-host-info.sub.js', './resources/test-script.js'],
+        headers: [[headerName, headerValue]],
+      },
+  );
+
+  await assertSimplestScriptRuns(newMain);
+  await assertFunctionRuns(
+      newMain, () => testFunction(), 'testFunction exists');
+
+  const remoteOrigin = get_host_info()['HTTP_REMOTE_ORIGIN'];
+  await assertOriginIsAsExpected(newMain, remoteOrigin);
+  await assertHeaderIsAsExpected(newMain, headerName, headerValue);
+});
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/remote-context-helper-tests/navigation-bfcache.window.js b/testing/web-platform/tests/html/browsers/browsing-the-web/remote-context-helper-tests/navigation-bfcache.window.js
new file mode 100644
index 0000000000..1fa90a9064
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/remote-context-helper-tests/navigation-bfcache.window.js
@@ -0,0 +1,35 @@
+// META: title=RemoteContextHelper navigation using BFCache
+// META: script=/common/dispatcher/dispatcher.js
+// META: script=/common/get-host-info.sub.js
+// META: script=/common/utils.js
+// META: script=/html/browsers/browsing-the-web/remote-context-helper/resources/remote-context-helper.js
+// META: script=./resources/test-helper.js
+
+'use strict';
+
+promise_test(async t => {
+  const rcHelper = new RemoteContextHelper();
+
+  // Open a window with noopener so that BFCache will work.
+  const rc1 = await rcHelper.addWindow(
+      /*config=*/ null, /*options=*/ {features: 'noopener'});
+
+  // Add a pageshow listener to stash the event.
+  await rc1.executeScript(() => {
+    window.addEventListener('pageshow', (event) => {
+      window.pageshowEvent = event;
+    });
+  });
+
+  // Navigate away.
+  const rc2 = await rc1.navigateToNew();
+  await assertSimplestScriptRuns(rc2);
+
+  // Navigate back.
+  await rc2.historyBack();
+
+  // Verify that the document was BFCached.
+  assert_true(await rc1.executeScript(() => {
+    return window.pageshowEvent.persisted;
+  }));
+});
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/remote-context-helper-tests/navigation-helpers.window.js b/testing/web-platform/tests/html/browsers/browsing-the-web/remote-context-helper-tests/navigation-helpers.window.js
new file mode 100644
index 0000000000..079e20661e
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/remote-context-helper-tests/navigation-helpers.window.js
@@ -0,0 +1,28 @@
+// META: title=RemoteContextHelper navigation helpers
+// META: script=/common/dispatcher/dispatcher.js
+// META: script=/common/get-host-info.sub.js
+// META: script=/common/utils.js
+// META: script=/html/browsers/browsing-the-web/remote-context-helper/resources/remote-context-helper.js
+// META: script=./resources/test-helper.js
+// META: timeout=long
+
+'use strict';
+
+promise_test(async t => {
+  const rcHelper = new RemoteContextHelper();
+  const rc1 = await rcHelper.addWindow();
+  await assertSimplestScriptRuns(rc1);
+
+  const rc2 = await rc1.navigateToNew();
+  await assertSimplestScriptRuns(rc2);
+
+  await rc2.historyBack();
+  await assertSimplestScriptRuns(rc1);
+
+  await rc1.historyForward();
+  await assertSimplestScriptRuns(rc2);
+
+  const rc3 = await rc2.navigateToNew();
+  await rc3.historyGo(-2);
+  await assertSimplestScriptRuns(rc1);
+});
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/remote-context-helper-tests/navigation-same-document.window.js b/testing/web-platform/tests/html/browsers/browsing-the-web/remote-context-helper-tests/navigation-same-document.window.js
new file mode 100644
index 0000000000..6f637e2b90
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/remote-context-helper-tests/navigation-same-document.window.js
@@ -0,0 +1,39 @@
+// META: title=RemoteContextHelper navigation using BFCache
+// META: script=/common/dispatcher/dispatcher.js
+// META: script=/common/get-host-info.sub.js
+// META: script=/common/utils.js
+// META: script=/html/browsers/browsing-the-web/remote-context-helper/resources/remote-context-helper.js
+// META: script=./resources/test-helper.js
+
+'use strict';
+
+async function assertLocationIs(remoteContextWrapper, expectedLocation) {
+  assert_equals(
+      await remoteContextWrapper.executeScript(() => {
+        return location.toString();
+      }),
+      expectedLocation, 'verify location');
+}
+
+promise_test(async t => {
+  const rcHelper = new RemoteContextHelper();
+
+  const rc = await rcHelper.addWindow();
+
+  const oldLocation = await rc.executeScript(() => {
+    return location.toString();
+  });
+  const newLocation = oldLocation + '#fragment';
+
+  // Navigate to same document.
+  await rc.navigateTo(newLocation);
+
+  // Verify that the window navigated.
+  await assertLocationIs(rc, newLocation);
+
+  // Navigate back.
+  await rc.historyBack(oldLocation);
+
+  // Verify that the window navigated back and the executor is running.
+  await assertLocationIs(rc, oldLocation);
+});
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/remote-context-helper-tests/resources/test-helper.js b/testing/web-platform/tests/html/browsers/browsing-the-web/remote-context-helper-tests/resources/test-helper.js
new file mode 100644
index 0000000000..71cd87e553
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/remote-context-helper-tests/resources/test-helper.js
@@ -0,0 +1,48 @@
+async function assertSimplestScriptRuns(remoteContextWrapper) {
+  assert_equals(
+      await remoteContextWrapper.executeScript(() => {
+        return 1;
+      }),
+      1, 'simplest script runs');
+}
+
+async function assertFunctionRuns(
+    remoteContextWrapper, functionToRun, expectedReturn) {
+  assert_equals(
+      await remoteContextWrapper.executeScript(functionToRun), expectedReturn,
+      'function runs');
+}
+
+async function assertOriginIsAsExpected(remoteContextWrapper, expectedOrigin) {
+  assert_equals(
+      await remoteContextWrapper.executeScript(() => {
+        return location.origin;
+      }),
+      expectedOrigin, 'verify origin');
+}
+
+async function assertWindowNameEquals(remoteContextWrapper, expectedName) {
+  assert_equals(
+      await remoteContextWrapper.executeScript(() => {
+        return window.name;
+      }),
+      expectedName, 'verify name');
+}
+
+async function assertWindowHasOpenerEquals(remoteContextWrapper, hasParent) {
+  assert_equals(
+      await remoteContextWrapper.executeScript(() => {
+        return !!window.opener;
+      }),
+      hasParent, 'verify opener');
+}
+
+async function assertHeaderIsAsExpected(
+    remoteContextWrapper, headerName, headerValue) {
+  assert_equals(
+      headerValue,
+      await remoteContextWrapper.executeScript(async (headerName) => {
+        const res = await fetch(location);
+        return res.headers.get(headerName);
+      }, [headerName]), 'header is set');
+}
\ No newline at end of file
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/remote-context-helper-tests/resources/test-script.js b/testing/web-platform/tests/html/browsers/browsing-the-web/remote-context-helper-tests/resources/test-script.js
new file mode 100644
index 0000000000..d1c02cab29
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/remote-context-helper-tests/resources/test-script.js
@@ -0,0 +1,3 @@
+function testFunction() {
+  return 'testFunction exists';
+}
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/remote-context-helper-tests/resources/test-script2.js b/testing/web-platform/tests/html/browsers/browsing-the-web/remote-context-helper-tests/resources/test-script2.js
new file mode 100644
index 0000000000..f9e72c442b
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/remote-context-helper-tests/resources/test-script2.js
@@ -0,0 +1,3 @@
+function testFunction2() {
+  return 'testFunction2 exists';
+}
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/remote-context-helper/resources/executor-common.js b/testing/web-platform/tests/html/browsers/browsing-the-web/remote-context-helper/resources/executor-common.js
new file mode 100644
index 0000000000..8df42de28c
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/remote-context-helper/resources/executor-common.js
@@ -0,0 +1,17 @@
+// Functions available by default in the executor.
+
+'use strict';
+
+let executor;
+
+// Expects addScript to be present (window or worker version).
+function addScripts(urls) {
+  return Promise.all(urls.map(addScript));
+}
+
+function startExecutor() {
+  const params = new URLSearchParams(location.search);
+  addScripts(params.getAll('script'));
+  const uuid = params.get('uuid');
+  executor = new Executor(uuid);
+}
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/remote-context-helper/resources/executor-window.js b/testing/web-platform/tests/html/browsers/browsing-the-web/remote-context-helper/resources/executor-window.js
new file mode 100644
index 0000000000..bc9ff6faf1
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/remote-context-helper/resources/executor-window.js
@@ -0,0 +1,70 @@
+// Functions available by default in the executor.
+
+'use strict';
+
+let executorStartEvent = null;
+
+function requestExecutor() {
+  const params = new URLSearchParams(location.search);
+  const startOn = params.get('startOn');
+
+  if (startOn) {
+    addEventListener(startOn, (e) => {
+      executorStartEvent = e;
+      startExecutor();
+    });
+  } else {
+    startExecutor();
+  }
+}
+
+function addScript(url) {
+  const script = document.createElement('script');
+  script.src = url;
+  const promise = new Promise((resolve, reject) => {
+    script.onload = () => resolve(url);
+    script.onerror = (e) => reject(e);
+  });
+  document.body.appendChild(script);
+  return promise;
+}
+
+/**
+ * Suspends the executor and executes the function in `fnString` when it has
+ * suspended. Installs a pageshow handler to resume the executor if the
+ * document is BFCached. Installs a hashchange handler to detect when the
+ * navigation did not change documents.
+ *
+ * This returns nothing because fn is invoke after waiting for the document to
+ * be suspended. If we were to return a promise, the executor could not suspend
+ * until that promise resolved but the promise cannot resolve until the executor
+ * is suspended. This could be avoided by adding support
+ * directly in the dispatcher for tasks suspend immediately after execution.
+ *
+ * @param {string} fnString A stringified function to be executed.
+ * @param {any[]} args The arguments to pass to the function.
+ */
+function executeScriptToNavigate(fnString, args) {
+  // Only one of these listeners should run.
+  const controller = new AbortController();
+  window.addEventListener('pageshow', (event) => {
+    controller.abort();
+    executor.resume();
+  }, {signal: controller.signal, once: true});
+  window.addEventListener('hashchange', (event) => {
+    controller.abort();
+    const oldURLObject = new URL(event.oldURL);
+    const newURLObject = new URL(event.newURL);
+    oldURLObject.hash = '';
+    newURLObject.hash = '';
+    // If only the hash-fragment changed then the navigation was
+    // same-document and we should resume the executor.
+    if (oldURLObject.toString() == newURLObject.toString()) {
+      executor.resume();
+    }
+  }, {signal: controller.signal, once: true});
+
+  executor.suspend(() => {
+    eval(fnString).apply(null, args);
+  });
+}
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/remote-context-helper/resources/executor-worker.js b/testing/web-platform/tests/html/browsers/browsing-the-web/remote-context-helper/resources/executor-worker.js
new file mode 100644
index 0000000000..49ce6bd52a
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/remote-context-helper/resources/executor-worker.js
@@ -0,0 +1,9 @@
+'use strict';
+
+importScripts('/common/dispatcher/dispatcher.js', './executor-common.js');
+
+function addScript(url) {
+  importScripts(url);
+}
+
+startExecutor();
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/remote-context-helper/resources/executor.sub.html b/testing/web-platform/tests/html/browsers/browsing-the-web/remote-context-helper/resources/executor.sub.html
new file mode 100644
index 0000000000..38f4429d91
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/remote-context-helper/resources/executor.sub.html
@@ -0,0 +1,16 @@
+
+
+
+
+
+
+  
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/remote-context-helper/resources/remote-context-helper.js b/testing/web-platform/tests/html/browsers/browsing-the-web/remote-context-helper/resources/remote-context-helper.js
new file mode 100644
index 0000000000..6978cef832
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/remote-context-helper/resources/remote-context-helper.js
@@ -0,0 +1,533 @@
+'use strict';
+
+// Requires:
+// - /common/dispatcher/dispatcher.js
+// - /common/utils.js
+// - /common/get-host-info.sub.js if automagic conversion of origin names to
+// URLs is used.
+
+/**
+ * This provides a more friendly interface to remote contexts in dispatches.js.
+ * The goal is to make it easy to write multi-window/-frame/-worker tests where
+ * the logic is entirely in 1 test file and there is no need to check in any
+ * other file (although it is often helpful to check in files of JS helper
+ * functions that are shared across remote context).
+ *
+ * So for example, to test that history traversal works, we create a new window,
+ * navigate it to a new document, go back and then go forward.
+ *
+ * @example
+ * promise_test(async t => {
+ *   const rcHelper = new RemoteContextHelper();
+ *   const rc1 = await rcHelper.addWindow();
+ *   const rc2 = await rc1.navigateToNew();
+ *   assert_equals(await rc2.executeScript(() => 'here'), 'here', 'rc2 is live');
+ *   rc2.historyBack();
+ *   assert_equals(await rc1.executeScript(() => 'here'), 'here', 'rc1 is live');
+ *   rc1.historyForward();
+ *   assert_equals(await rc2.executeScript(() => 'here'), 'here', 'rc2 is live');
+ * });
+ *
+ * Note on the correspondence between remote contexts and
+ * `RemoteContextWrapper`s. A remote context is entirely determined by its URL.
+ * So navigating away from one and then back again will result in a remote
+ * context that can be controlled by the same `RemoteContextWrapper` instance
+ * before and after navigation. Messages sent to a remote context while it is
+ * destroyed or in BFCache will be queued and processed if that that URL is
+ * navigated back to.
+ *
+ * Navigation:
+ * This framework does not keep track of the history of the frame tree and so it
+ * is up to the test script to keep track of what remote contexts are currently
+ * active and to keep references to the corresponding `RemoteContextWrapper`s.
+ *
+ * Any action that leads to navigation in the remote context must be executed
+ * using
+ * @see RemoteContextWrapper.navigate.
+ */
+
+{
+  const RESOURCES_PATH =
+      '/html/browsers/browsing-the-web/remote-context-helper/resources';
+  const WINDOW_EXECUTOR_PATH = `${RESOURCES_PATH}/executor.sub.html`;
+  const WORKER_EXECUTOR_PATH = `${RESOURCES_PATH}/executor-worker.js`;
+
+  /**
+   * Turns a string into an origin. If `origin` is null this will return the
+   * current document's origin. If `origin` contains not '/', this will attempt
+   * to use it as an index in `get_host_info()`. Otherwise returns the input
+   * origin.
+   * @private
+   * @param {string|null} origin The input origin.
+   * @return {string|null} The output origin.
+   * @throws {RangeError} is `origin` cannot be found in
+   *     `get_host_info()`.
+   */
+  function finalizeOrigin(origin) {
+    if (!origin) {
+      return location.origin;
+    }
+    if (!origin.includes('/')) {
+      const origins = get_host_info();
+      if (origin in origins) {
+        return origins[origin];
+      } else {
+        throw new RangeError(
+            `${origin} is not a key in the get_host_info() object`);
+      }
+    }
+    return origin;
+  }
+
+  /**
+   * @private
+   * @param {string} url
+   * @returns {string} Absolute url using `location` as the base.
+   */
+  function makeAbsolute(url) {
+    return new URL(url, location).toString();
+  }
+
+  /**
+   * Represents a configuration for a remote context executor.
+   */
+  class RemoteContextConfig {
+    /**
+     * @param {Object} [options]
+     * @param {string} [options.origin] A URL or a key in `get_host_info()`.
+     *                 @see finalizeOrigin for how origins are handled.
+     * @param {string[]} [options.scripts]  A list of script URLs. The current
+     *     document will be used as the base for relative URLs.
+     * @param {[string, string][]} [options.headers]  A list of pairs of name
+     *     and value. The executor will be served with these headers set.
+     * @param {string} [options.startOn] If supplied, the executor will start
+     *     when this event occurs, e.g. "pageshow",
+     *     (@see window.addEventListener). This only makes sense for
+     *     window-based executors, not worker-based.
+     */
+    constructor(
+        {origin, scripts = [], headers = [], startOn} = {}) {
+      this.origin = origin;
+      this.scripts = scripts;
+      this.headers = headers;
+      this.startOn = startOn;
+    }
+
+    /**
+     * If `config` is not already a `RemoteContextConfig`, one is constructed
+     * using `config`.
+     * @private
+     * @param {object} [config]
+     * @returns
+     */
+    static ensure(config) {
+      if (!config) {
+        return DEFAULT_CONTEXT_CONFIG;
+      }
+      return new RemoteContextConfig(config);
+    }
+
+    /**
+     * Merges `this` with another `RemoteContextConfig` and to give a new
+     * `RemoteContextConfig`. `origin` is replaced by the other if present,
+     * `headers` and `scripts` are concatenated with `this`'s coming first.
+     * @param {RemoteContextConfig} extraConfig
+     * @returns {RemoteContextConfig}
+     */
+    merged(extraConfig) {
+      let origin = this.origin;
+      if (extraConfig.origin) {
+        origin = extraConfig.origin;
+      }
+      let startOn = this.startOn;
+      if (extraConfig.startOn) {
+        startOn = extraConfig.startOn;
+      }
+      const headers = this.headers.concat(extraConfig.headers);
+      const scripts = this.scripts.concat(extraConfig.scripts);
+      return new RemoteContextConfig({
+        origin,
+        headers,
+        scripts,
+        startOn,
+      });
+    }
+  }
+
+  /**
+   * The default `RemoteContextConfig` to use if none is supplied. It has no
+   * origin, headers or scripts.
+   * @constant {RemoteContextConfig}
+   */
+  const DEFAULT_CONTEXT_CONFIG = new RemoteContextConfig();
+
+  /**
+   * This class represents a configuration for creating remote contexts. This is
+   * the entry-point
+   * for creating remote contexts, providing @see addWindow .
+   */
+  class RemoteContextHelper {
+    /**
+     * @param {RemoteContextConfig|object} config The configuration
+     *     for this remote context.
+     */
+    constructor(config) {
+      this.config = RemoteContextConfig.ensure(config);
+    }
+
+    /**
+     * Creates a new remote context and returns a `RemoteContextWrapper` giving
+     * access to it.
+     * @private
+     * @param {Object} options
+     * @param {(url: string) => Promise} options.executorCreator A
+     *     function that takes a URL and causes the browser to navigate some
+     *     window to that URL, e.g. via an iframe or a new window.
+     * @param {RemoteContextConfig|object} [options.extraConfig] If supplied,
+     *     extra configuration for this remote context to be merged with
+     *     `this`'s existing config. If it's not a `RemoteContextConfig`, it
+     *     will be used to construct a new one.
+     * @returns {Promise}
+     */
+    async createContext({
+      executorCreator,
+      extraConfig,
+      isWorker = false,
+    }) {
+      const config =
+          this.config.merged(RemoteContextConfig.ensure(extraConfig));
+
+      const origin = finalizeOrigin(config.origin);
+      const url = new URL(
+          isWorker ? WORKER_EXECUTOR_PATH : WINDOW_EXECUTOR_PATH, origin);
+
+      // UUID is needed for executor.
+      const uuid = token();
+      url.searchParams.append('uuid', uuid);
+
+      if (config.headers) {
+        addHeaders(url, config.headers);
+      }
+      for (const script of config.scripts) {
+        url.searchParams.append('script', makeAbsolute(script));
+      }
+
+      if (config.startOn) {
+        url.searchParams.append('startOn', config.startOn);
+      }
+
+      await executorCreator(url.href);
+      return new RemoteContextWrapper(new RemoteContext(uuid), this, url.href);
+    }
+
+    /**
+     * Creates a window with a remote context. @see createContext for
+     * @param {RemoteContextConfig|object} [extraConfig] Will be
+     *     merged with `this`'s config.
+     * @param {Object} [options]
+     * @param {string} [options.target] Passed to `window.open` as the
+     *     2nd argument
+     * @param {string} [options.features] Passed to `window.open` as the
+     *     3rd argument
+     * @returns {Promise}
+     */
+    addWindow(extraConfig, options) {
+      return this.createContext({
+        executorCreator: windowExecutorCreator(options),
+        extraConfig,
+      });
+    }
+
+    async createContextWithUrl(extraConfig) {
+      let saveUrl;
+      let wrapper = await this.createContext({
+        executorCreator: (url) => {saveUrl = url},
+        extraConfig,
+      });
+      return [wrapper, saveUrl];
+    }
+  }
+  // Export this class.
+  self.RemoteContextHelper = RemoteContextHelper;
+
+  /**
+   * Attaches header to the URL. See
+   * https://web-platform-tests.org/writing-tests/server-pipes.html#headers
+   * @param {string} url the URL to which headers should be attached.
+   * @param {[[string, string]]} headers a list of pairs of head-name,
+   *     header-value.
+   */
+  function addHeaders(url, headers) {
+    function escape(s) {
+      return s.replace('(', '\\(').replace(')', '\\)');
+    }
+    const formattedHeaders = headers.map((header) => {
+      return `header(${escape(header[0])}, ${escape(header[1])})`;
+    });
+    url.searchParams.append('pipe', formattedHeaders.join('|'));
+  }
+
+  function windowExecutorCreator({target = '_blank', features} = {}) {
+    return url => {
+      window.open(url, target, features);
+    };
+  }
+
+  function elementExecutorCreator(
+      remoteContextWrapper, elementName, attributes) {
+    return url => {
+      return remoteContextWrapper.executeScript((url, elementName, attributes) => {
+        const el = document.createElement(elementName);
+        for (const attribute in attributes) {
+          el.setAttribute(attribute, attributes[attribute]);
+        }
+        el.src = url;
+        document.body.appendChild(el);
+      }, [url, elementName, attributes]);
+    };
+  }
+
+  function workerExecutorCreator() {
+    return url => {
+      new Worker(url);
+    };
+  }
+
+  function navigateExecutorCreator(remoteContextWrapper) {
+    return url => {
+      return remoteContextWrapper.navigate((url) => {
+        window.location = url;
+      }, [url]);
+    };
+  }
+
+  /**
+   * This class represents a remote context running an executor (a
+   * window/frame/worker that can receive commands). It is the interface for
+   * scripts to control remote contexts.
+   *
+   * Instances are returned when new remote contexts are created (e.g.
+   * `addFrame` or `navigateToNew`).
+   */
+  class RemoteContextWrapper {
+    /**
+     * This should only be constructed by `RemoteContextHelper`.
+     * @private
+     */
+    constructor(context, helper) {
+      this.context = context;
+      this.helper = helper;
+    }
+
+    /**
+     * Executes a script in the remote context.
+     * @param {function} fn The script to execute.
+     * @param {any[]} args An array of arguments to pass to the script.
+     * @returns {Promise} The return value of the script (after
+     *     being serialized and deserialized).
+     */
+    async executeScript(fn, args) {
+      return this.context.execute_script(fn, args);
+    }
+
+    /**
+     * Adds a string of HTML to the executor's document.
+     * @param {string} html
+     * @returns {Promise}
+     */
+    async addHTML(html) {
+      return this.executeScript((htmlSource) => {
+        document.body.insertAdjacentHTML('beforebegin', htmlSource);
+      }, [html]);
+    }
+
+    /**
+     * Adds scripts to the executor's document.
+     * @param {string[]} urls A list of URLs. URLs are relative to the current
+     *     document.
+     * @returns {Promise}
+     */
+    async addScripts(urls) {
+      if (!urls) {
+        return [];
+      }
+      return this.executeScript(urls => {
+        return addScripts(urls);
+      }, [urls.map(makeAbsolute)]);
+    }
+
+    /**
+     * Adds an iframe to the current document.
+     * @param {RemoteContextConfig} [extraConfig]
+     * @param {[string, string][]} [attributes] A list of pairs of strings
+     *     of attribute name and value these will be set on the iframe element
+     *     when added to the document.
+     * @returns {Promise} The remote context.
+     */
+    addIframe(extraConfig, attributes = {}) {
+      return this.helper.createContext({
+        executorCreator: elementExecutorCreator(this, 'iframe', attributes),
+        extraConfig,
+      });
+    }
+
+    /**
+     * Adds a dedicated worker to the current document.
+     * @param {RemoteContextConfig} [extraConfig]
+     * @returns {Promise} The remote context.
+     */
+    addWorker(extraConfig) {
+      return this.helper.createContext({
+        executorCreator: workerExecutorCreator(),
+        extraConfig,
+        isWorker: true,
+      });
+    }
+
+    /**
+     * Executes a script in the remote context that will perform a navigation.
+     * To do this safely, we must suspend the executor and wait for that to
+     * complete before executing. This ensures that all outstanding requests are
+     * completed and no more can start. It also ensures that the executor will
+     * restart if the page goes into BFCache or it was a same-document
+     * navigation. It does not return a value.
+     *
+     * NOTE: We cannot monitor whether and what navigations are happening. The
+     * logic has been made as robust as possible but is not fool-proof.
+     *
+     * Foolproof rule:
+     * - The script must perform exactly one navigation.
+     * - If that navigation is a same-document history traversal, you must
+     * `await` the result of `waitUntilLocationIs`. (Same-document non-traversal
+     * navigations do not need this extra step.)
+     *
+     * More complex rules:
+     * - The script must perform a navigation. If it performs no navigation,
+     *   the remote context will be left in the suspended state.
+     * - If the script performs a direct same-document navigation, it is not
+     * necessary to use this function but it will work as long as it is the only
+     *   navigation performed.
+     * - If the script performs a same-document history navigation, you must
+     * `await` the result of `waitUntilLocationIs`.
+     *
+     * @param {function} fn The script to execute.
+     * @param {any[]} args An array of arguments to pass to the script.
+     * @returns {Promise}
+     */
+    navigate(fn, args) {
+      return this.executeScript((fnText, args) => {
+        executeScriptToNavigate(fnText, args);
+      }, [fn.toString(), args]);
+    }
+
+    /**
+     * Navigates to the given URL, by executing a script in the remote
+     * context that will perform navigation with the `location.href`
+     * setter.
+     *
+     * Be aware that performing a cross-document navigation using this
+     * method will cause this `RemoteContextWrapper` to become dormant,
+     * since the remote context it points to is no longer active and
+     * able to receive messages. You also won't be able to reliably
+     * tell when the navigation finishes; the returned promise will
+     * fulfill when the script finishes running, not when the navigation
+     * is done. As such, this is most useful for testing things like
+     * unload behavior (where it doesn't matter) or prerendering (where
+     * there is already a `RemoteContextWrapper` for the destination).
+     * For other cases, using `navigateToNew()` will likely be better.
+     *
+     * @param {string|URL} url The URL to navigate to.
+     * @returns {Promise}
+     */
+    navigateTo(url) {
+      return this.navigate(url => {
+        location.href = url;
+      }, [url.toString()]);
+    }
+
+    /**
+     * Navigates the context to a new document running an executor.
+     * @param {RemoteContextConfig} [extraConfig]
+     * @returns {Promise} The remote context.
+     */
+    async navigateToNew(extraConfig) {
+      return this.helper.createContext({
+        executorCreator: navigateExecutorCreator(this),
+        extraConfig,
+      });
+    }
+
+    //////////////////////////////////////
+    // Navigation Helpers.
+    //
+    // It is up to the test script to know which remote context will be
+    // navigated to and which `RemoteContextWrapper` should be used after
+    // navigation.
+    //
+    // NOTE: For a same-document history navigation, the caller use `await` a
+    // call to `waitUntilLocationIs` in order to know that the navigation has
+    // completed. For convenience the method below can return the promise to
+    // wait on, if passed the expected location.
+
+    async waitUntilLocationIs(expectedLocation) {
+      return this.executeScript(async (expectedLocation) => {
+        if (location.href === expectedLocation) {
+          return;
+        }
+
+        // Wait until the location updates to the expected one.
+        await new Promise(resolve => {
+          const listener = addEventListener('hashchange', (event) => {
+            if (event.newURL === expectedLocation) {
+              removeEventListener(listener);
+              resolve();
+            }
+          });
+        });
+      }, [expectedLocation]);
+    }
+
+    /**
+     * Performs a history traversal.
+     * @param {integer} n How many steps to traverse. @see history.go
+     * @param {string} [expectedLocation] If supplied will be passed to @see waitUntilLocationIs.
+     * @returns {Promise}
+     */
+    async historyGo(n, expectedLocation) {
+      await this.navigate((n) => {
+        history.go(n);
+      }, [n]);
+      if (expectedLocation) {
+        await this.waitUntilLocationIs(expectedLocation);
+      }
+    }
+
+    /**
+     * Performs a history traversal back.
+     * @param {string} [expectedLocation] If supplied will be passed to @see waitUntilLocationIs.
+     * @returns {Promise}
+     */
+    async historyBack(expectedLocation) {
+      await this.navigate(() => {
+        history.back();
+      });
+      if (expectedLocation) {
+        await this.waitUntilLocationIs(expectedLocation);
+      }
+    }
+
+    /**
+     * Performs a history traversal back.
+     * @param {string} [expectedLocation] If supplied will be passed to @see waitUntilLocationIs.
+     * @returns {Promise}
+     */
+    async historyForward(expectedLocation) {
+      await this.navigate(() => {
+        history.forward();
+      });
+      if (expectedLocation) {
+        await this.waitUntilLocationIs(expectedLocation);
+      }
+    }
+  }
+}
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/resources/has-iframe.html b/testing/web-platform/tests/html/browsers/browsing-the-web/resources/has-iframe.html
new file mode 100644
index 0000000000..e6dfba1011
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/resources/has-iframe.html
@@ -0,0 +1,7 @@
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/resources/helpers.js b/testing/web-platform/tests/html/browsers/browsing-the-web/resources/helpers.js
new file mode 100644
index 0000000000..b19addfadf
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/resources/helpers.js
@@ -0,0 +1,84 @@
+// This file contains general helpers for navigation/history tests. The goal is
+// to make tests more imperative and ordered, instead of requiring lots of
+// nested callbacks and jumping back and forth. However,
+// html/browsers/browsing-the-web/remote-context-helper/resources/remote-context-helper.js
+// might be even better at that, so prefer that when you can.
+//
+// TODO(domenic): consider unifying with
+// overlapping-navigations-and-traversals/resources/helpers.mjs.
+
+window.openWindow = (url, t) => {
+  const w = window.open(url);
+  t?.add_cleanup(() => w.close());
+
+  return new Promise(resolve => {
+    w.addEventListener("load", () => resolve(w), { once: true });
+  });
+};
+
+window.addIframe = (url = "/common/blank.html", doc = document) => {
+  const iframe = doc.createElement("iframe");
+  iframe.src = url;
+  doc.body.append(iframe);
+
+  return new Promise(resolve => {
+    iframe.addEventListener("load", () => resolve(iframe), { once: true });
+  });
+};
+
+window.addSrcdocIframe = async () => {
+  const iframe = document.createElement("iframe");
+  iframe.srcdoc = `
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/scroll-to-fragid/001.html b/testing/web-platform/tests/html/browsers/browsing-the-web/scroll-to-fragid/001.html
new file mode 100644
index 0000000000..32599bbc50
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/scroll-to-fragid/001.html
@@ -0,0 +1,16 @@
+
+
+Fragment Navigation: Updating document address
+
+
+

+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/scroll-to-fragid/002.html b/testing/web-platform/tests/html/browsers/browsing-the-web/scroll-to-fragid/002.html
new file mode 100644
index 0000000000..92bfd63415
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/scroll-to-fragid/002.html
@@ -0,0 +1,21 @@
+
+
+Fragment Navigation: Updating document address twice
+
+
+

+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/scroll-to-fragid/003.html b/testing/web-platform/tests/html/browsers/browsing-the-web/scroll-to-fragid/003.html
new file mode 100644
index 0000000000..86d85b9ca6
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/scroll-to-fragid/003.html
@@ -0,0 +1,25 @@
+
+
+Fragment Navigation: Updating scroll position
+
+
+
+

+
scroll 1

+
Filler

+
scroll 2

+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/scroll-to-fragid/004.html b/testing/web-platform/tests/html/browsers/browsing-the-web/scroll-to-fragid/004.html
new file mode 100644
index 0000000000..c365c6fd29
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/scroll-to-fragid/004.html
@@ -0,0 +1,23 @@
+
+
+Fragment Navigation: hashchange event
+
+
+
+

+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/scroll-to-fragid/005.html b/testing/web-platform/tests/html/browsers/browsing-the-web/scroll-to-fragid/005.html
new file mode 100644
index 0000000000..f0761a64f6
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/scroll-to-fragid/005.html
@@ -0,0 +1,23 @@
+
+
+Fragment Navigation: hashchange event
+
+
+
+

+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/scroll-to-fragid/006.html b/testing/web-platform/tests/html/browsers/browsing-the-web/scroll-to-fragid/006.html
new file mode 100644
index 0000000000..a65b9eb4a2
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/scroll-to-fragid/006.html
@@ -0,0 +1,34 @@
+
+
+Fragment Navigation: hashchange event multiple changes old/newURL
+
+
+
+

+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/scroll-to-fragid/007.html b/testing/web-platform/tests/html/browsers/browsing-the-web/scroll-to-fragid/007.html
new file mode 100644
index 0000000000..0b6fe813ba
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/scroll-to-fragid/007.html
@@ -0,0 +1,37 @@
+
+
+Fragment Navigation: hashchange event multiple changes old/newURL
+
+
+
+
+

+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/scroll-to-fragid/forward-triggers-hashchange.html b/testing/web-platform/tests/html/browsers/browsing-the-web/scroll-to-fragid/forward-triggers-hashchange.html
new file mode 100644
index 0000000000..45f7e38ba3
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/scroll-to-fragid/forward-triggers-hashchange.html
@@ -0,0 +1,44 @@
+
+
+Navigating forward after replace() should still trigger hashchange
+
+
+
+
+
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/scroll-to-fragid/fragment-and-encoding-2.html b/testing/web-platform/tests/html/browsers/browsing-the-web/scroll-to-fragid/fragment-and-encoding-2.html
new file mode 100644
index 0000000000..cd2502ab1c
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/scroll-to-fragid/fragment-and-encoding-2.html
@@ -0,0 +1,41 @@
+
+
+Fragment navigation: encoding
+
+
+

+

+

+

+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/scroll-to-fragid/fragment-and-encoding.html b/testing/web-platform/tests/html/browsers/browsing-the-web/scroll-to-fragid/fragment-and-encoding.html
new file mode 100644
index 0000000000..21fbd4618d
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/scroll-to-fragid/fragment-and-encoding.html
@@ -0,0 +1,50 @@
+
+
+Fragment navigation: encoding
+
+
+

+

+

+

+

+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/scroll-to-fragid/navigate-helpers.js b/testing/web-platform/tests/html/browsers/browsing-the-web/scroll-to-fragid/navigate-helpers.js
new file mode 100644
index 0000000000..7a9adeb3d2
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/scroll-to-fragid/navigate-helpers.js
@@ -0,0 +1,23 @@
+"use strict";
+
+// Usage examples:
+//   navigateAndWaitForChange(frameWindow, w => w.location.href = "...");
+//   navigateAndWaitForChange(frameWindow, w => w.history.back());
+//   navigateAndWaitForChange(frameWindow, w => w.history.back(), { assumeSuccessAfter: 100 });
+
+window.navigateAndWaitForChange = (w, navigationAction, { assumeSuccessAfter } = {}) => {
+  return new Promise(resolve => {
+    w.addEventListener("hashchange", listener);
+
+    function listener() {
+      w.removeEventListener("hashchange", listener);
+      resolve();
+    }
+
+    if (assumeSuccessAfter !== undefined) {
+      step_timeout(resolve, assumeSuccessAfter);
+    }
+
+    navigationAction(w);
+  });
+};
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/scroll-to-fragid/replacement-enabled.html b/testing/web-platform/tests/html/browsers/browsing-the-web/scroll-to-fragid/replacement-enabled.html
new file mode 100644
index 0000000000..b22fbed80f
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/scroll-to-fragid/replacement-enabled.html
@@ -0,0 +1,69 @@
+
+
+Navigating to a fragment should not clear forward history
+
+
+
+
+
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/scroll-to-fragid/scroll-frag-non-utf8-encoded-document.html b/testing/web-platform/tests/html/browsers/browsing-the-web/scroll-to-fragid/scroll-frag-non-utf8-encoded-document.html
new file mode 100644
index 0000000000..7d4e994f0a
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/scroll-to-fragid/scroll-frag-non-utf8-encoded-document.html
@@ -0,0 +1,21 @@
+
+Fragment Navigation: fragment id should not be found in non UTF8 document
+
+
+
+
+
+

+

+

+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/scroll-to-fragid/scroll-frag-percent-encoded.html b/testing/web-platform/tests/html/browsers/browsing-the-web/scroll-to-fragid/scroll-frag-percent-encoded.html
new file mode 100644
index 0000000000..aa179425c5
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/scroll-to-fragid/scroll-frag-percent-encoded.html
@@ -0,0 +1,62 @@
+
+Fragment Navigation: fragment id should be percent-decoded
+
+
+
+
+

+

+

+

+

+

+

+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/scroll-to-fragid/scroll-position-vertical-lr.html b/testing/web-platform/tests/html/browsers/browsing-the-web/scroll-to-fragid/scroll-position-vertical-lr.html
new file mode 100644
index 0000000000..57d99440e1
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/scroll-to-fragid/scroll-position-vertical-lr.html
@@ -0,0 +1,25 @@
+
+
+
+
+Fragment Navigation: Scroll to block start position in vertical-lr writing mode
+
+
+
+
+

+

+
+
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/scroll-to-fragid/scroll-position-vertical-rl.html b/testing/web-platform/tests/html/browsers/browsing-the-web/scroll-to-fragid/scroll-position-vertical-rl.html
new file mode 100644
index 0000000000..60a902199a
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/scroll-to-fragid/scroll-position-vertical-rl.html
@@ -0,0 +1,25 @@
+
+
+
+
+Fragment Navigation: Scroll to block start position in vertical-rl writing mode
+
+
+
+
+

+

+
+
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/scroll-to-fragid/scroll-position.html b/testing/web-platform/tests/html/browsers/browsing-the-web/scroll-to-fragid/scroll-position.html
new file mode 100644
index 0000000000..c38d2de83b
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/scroll-to-fragid/scroll-position.html
@@ -0,0 +1,25 @@
+
+
+
+
+Fragment Navigation: Scroll to block start position
+
+
+
+
+

+

+
+
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/scroll-to-fragid/scroll-to-anchor-name.html b/testing/web-platform/tests/html/browsers/browsing-the-web/scroll-to-fragid/scroll-to-anchor-name.html
new file mode 100644
index 0000000000..060aed11e2
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/scroll-to-fragid/scroll-to-anchor-name.html
@@ -0,0 +1,59 @@
+
+Fragment Navigation: scroll to anchor name is lower priority than equal id
+
+
+
+
+

+
+

+
+
+

+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/scroll-to-fragid/scroll-to-id-top.html b/testing/web-platform/tests/html/browsers/browsing-the-web/scroll-to-fragid/scroll-to-id-top.html
new file mode 100644
index 0000000000..601d40a2a1
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/scroll-to-fragid/scroll-to-id-top.html
@@ -0,0 +1,51 @@
+
+Fragment Navigation: TOP is a valid element id, which overrides navigating to top of the document
+
+
+
+
+

+

+

+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/scroll-to-fragid/scroll-to-top.html b/testing/web-platform/tests/html/browsers/browsing-the-web/scroll-to-fragid/scroll-to-top.html
new file mode 100644
index 0000000000..bf62e4cd55
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/scroll-to-fragid/scroll-to-top.html
@@ -0,0 +1,56 @@
+
+Fragment Navigation: When fragid is TOP scroll to the top of the document
+
+
+
+
+

+

+

+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/unloading-documents/001.html b/testing/web-platform/tests/html/browsers/browsing-the-web/unloading-documents/001.html
new file mode 100644
index 0000000000..1ef88d3cc1
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/unloading-documents/001.html
@@ -0,0 +1,15 @@
+
+document.open in unload
+
+
+

+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/unloading-documents/002.html b/testing/web-platform/tests/html/browsers/browsing-the-web/unloading-documents/002.html
new file mode 100644
index 0000000000..a4e0b243e2
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/unloading-documents/002.html
@@ -0,0 +1,15 @@
+
+document.open in unload
+
+
+

+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/unloading-documents/003.html b/testing/web-platform/tests/html/browsers/browsing-the-web/unloading-documents/003.html
new file mode 100644
index 0000000000..d0a19e0ddc
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/unloading-documents/003.html
@@ -0,0 +1,15 @@
+
+document.open in beforeunload with link
+
+
+

+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/unloading-documents/004.html b/testing/web-platform/tests/html/browsers/browsing-the-web/unloading-documents/004.html
new file mode 100644
index 0000000000..fca926f652
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/unloading-documents/004.html
@@ -0,0 +1,15 @@
+
+document.open in beforeunload with button
+
+
+

+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/unloading-documents/005.html b/testing/web-platform/tests/html/browsers/browsing-the-web/unloading-documents/005.html
new file mode 100644
index 0000000000..c215fb88e7
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/unloading-documents/005.html
@@ -0,0 +1,15 @@
+
+document.open in pagehide in iframe
+
+
+

+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/unloading-documents/base.html b/testing/web-platform/tests/html/browsers/browsing-the-web/unloading-documents/base.html
new file mode 100644
index 0000000000..70c07cba4c
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/unloading-documents/base.html
@@ -0,0 +1,14 @@
+
+Base
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/unloading-documents/beforeunload-canceling-1.html b/testing/web-platform/tests/html/browsers/browsing-the-web/unloading-documents/beforeunload-canceling-1.html
new file mode 100644
index 0000000000..6ba1e65740
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/unloading-documents/beforeunload-canceling-1.html
@@ -0,0 +1,35 @@
+
+
+Support page for beforeunload-canceling.html
+
+
If this goes away, it navigated

+
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/unloading-documents/beforeunload-canceling.html b/testing/web-platform/tests/html/browsers/browsing-the-web/unloading-documents/beforeunload-canceling.html
new file mode 100644
index 0000000000..29a685fa59
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/unloading-documents/beforeunload-canceling.html
@@ -0,0 +1,222 @@
+
+
+beforeunload return value cancelation behavior
+
+
+
+
+
+

+
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/unloading-documents/beforeunload-on-history-back-1.html b/testing/web-platform/tests/html/browsers/browsing-the-web/unloading-documents/beforeunload-on-history-back-1.html
new file mode 100644
index 0000000000..4403cfa8e9
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/unloading-documents/beforeunload-on-history-back-1.html
@@ -0,0 +1,5 @@
+
+001-1
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/unloading-documents/beforeunload-on-history-back.html b/testing/web-platform/tests/html/browsers/browsing-the-web/unloading-documents/beforeunload-on-history-back.html
new file mode 100644
index 0000000000..5b0415c422
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/unloading-documents/beforeunload-on-history-back.html
@@ -0,0 +1,31 @@
+
+beforeunload event fires on history navigation back
+
+
+

+
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/unloading-documents/beforeunload-on-navigation-of-parent-1.html b/testing/web-platform/tests/html/browsers/browsing-the-web/unloading-documents/beforeunload-on-navigation-of-parent-1.html
new file mode 100644
index 0000000000..4f239dad1e
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/unloading-documents/beforeunload-on-navigation-of-parent-1.html
@@ -0,0 +1,2 @@
+
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/unloading-documents/beforeunload-on-navigation-of-parent-2.html b/testing/web-platform/tests/html/browsers/browsing-the-web/unloading-documents/beforeunload-on-navigation-of-parent-2.html
new file mode 100644
index 0000000000..a34b182e70
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/unloading-documents/beforeunload-on-navigation-of-parent-2.html
@@ -0,0 +1,4 @@
+
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/unloading-documents/beforeunload-on-navigation-of-parent.html b/testing/web-platform/tests/html/browsers/browsing-the-web/unloading-documents/beforeunload-on-navigation-of-parent.html
new file mode 100644
index 0000000000..96d49567f3
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/unloading-documents/beforeunload-on-navigation-of-parent.html
@@ -0,0 +1,31 @@
+
+beforeunload in iframe on navigation of parent
+
+
+

+
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/unloading-documents/beforeunload-sticky-activation-iframe.html b/testing/web-platform/tests/html/browsers/browsing-the-web/unloading-documents/beforeunload-sticky-activation-iframe.html
new file mode 100644
index 0000000000..212a10c005
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/unloading-documents/beforeunload-sticky-activation-iframe.html
@@ -0,0 +1,25 @@
+
+
+Beforeunload must be gated behind sticky activation: nested browsing context
+
+
+
+
If you happen to be running this test as a human, then be sure not to interact with any part of the page; that would invalidate the results!
+
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/unloading-documents/beforeunload-sticky-activation-manual.html b/testing/web-platform/tests/html/browsers/browsing-the-web/unloading-documents/beforeunload-sticky-activation-manual.html
new file mode 100644
index 0000000000..55612bbfc4
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/unloading-documents/beforeunload-sticky-activation-manual.html
@@ -0,0 +1,17 @@
+
+
+Beforeunload must be gated behind sticky activation: normal top-level browsing context
+
+
This test is manual because we want to test non-popup, non-iframe situations. Sibling files contain automated tests for those situations.
+
+
In three seconds, this document will redirect itself to a new page. The test passes if the redirect succeeds. The test fails if a beforeunload dialog pops up asking for confirmation.
+
+
Be sure not to interact with any part of the page in the meantime. That would invalidate the results.
+
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/unloading-documents/beforeunload-sticky-activation-popup.html b/testing/web-platform/tests/html/browsers/browsing-the-web/unloading-documents/beforeunload-sticky-activation-popup.html
new file mode 100644
index 0000000000..23bf8a440d
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/unloading-documents/beforeunload-sticky-activation-popup.html
@@ -0,0 +1,24 @@
+
+
+Beforeunload must be gated behind sticky activation: auxiliary browsing context
+
+
+
+
If you happen to be running this test as a human, then be sure not to interact with any part of the page; that would invalidate the results!
+
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/unloading-documents/beforeunload-synchronous.html b/testing/web-platform/tests/html/browsers/browsing-the-web/unloading-documents/beforeunload-synchronous.html
new file mode 100644
index 0000000000..6806eaf7a3
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/unloading-documents/beforeunload-synchronous.html
@@ -0,0 +1,33 @@
+
+
+beforeunload event is emitted synchronously
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/unloading-documents/navigation-within-beforeunload-1.html b/testing/web-platform/tests/html/browsers/browsing-the-web/unloading-documents/navigation-within-beforeunload-1.html
new file mode 100644
index 0000000000..b96234fba2
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/unloading-documents/navigation-within-beforeunload-1.html
@@ -0,0 +1,10 @@
+
+004-1
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/unloading-documents/navigation-within-beforeunload-2.html b/testing/web-platform/tests/html/browsers/browsing-the-web/unloading-documents/navigation-within-beforeunload-2.html
new file mode 100644
index 0000000000..2dceaa6d6a
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/unloading-documents/navigation-within-beforeunload-2.html
@@ -0,0 +1,4 @@
+
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/unloading-documents/navigation-within-beforeunload.html b/testing/web-platform/tests/html/browsers/browsing-the-web/unloading-documents/navigation-within-beforeunload.html
new file mode 100644
index 0000000000..d6ecf5d52f
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/unloading-documents/navigation-within-beforeunload.html
@@ -0,0 +1,29 @@
+
+Triggering navigation from within beforeunload event
+
+
+

+
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/unloading-documents/pagehide-on-history-forward-1.html b/testing/web-platform/tests/html/browsers/browsing-the-web/unloading-documents/pagehide-on-history-forward-1.html
new file mode 100644
index 0000000000..a60c20ed80
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/unloading-documents/pagehide-on-history-forward-1.html
@@ -0,0 +1,2 @@
+
+filler text
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/unloading-documents/pagehide-on-history-forward.html b/testing/web-platform/tests/html/browsers/browsing-the-web/unloading-documents/pagehide-on-history-forward.html
new file mode 100644
index 0000000000..5e64b5ec66
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/unloading-documents/pagehide-on-history-forward.html
@@ -0,0 +1,19 @@
+
+pagehide event fires on history navigation forward
+
+
+

+
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/unloading-documents/prompt-and-unload-script-closeable.html b/testing/web-platform/tests/html/browsers/browsing-the-web/unloading-documents/prompt-and-unload-script-closeable.html
new file mode 100644
index 0000000000..b94789c40f
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/unloading-documents/prompt-and-unload-script-closeable.html
@@ -0,0 +1,23 @@
+
+beforeunload and unload events fire after window.close() in script-closeable browsing context
+
+
+
+

+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/unloading-documents/prompt-and-unload-script-uncloseable-1.html b/testing/web-platform/tests/html/browsers/browsing-the-web/unloading-documents/prompt-and-unload-script-uncloseable-1.html
new file mode 100644
index 0000000000..3a557ce34e
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/unloading-documents/prompt-and-unload-script-uncloseable-1.html
@@ -0,0 +1,10 @@
+
+script-uncloseable-1
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/unloading-documents/prompt-and-unload-script-uncloseable.html b/testing/web-platform/tests/html/browsers/browsing-the-web/unloading-documents/prompt-and-unload-script-uncloseable.html
new file mode 100644
index 0000000000..f6a17d740b
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/unloading-documents/prompt-and-unload-script-uncloseable.html
@@ -0,0 +1,24 @@
+
+beforeunload and unload events do not fire after window.close() in script-uncloseable browsing context
+
+
+

+
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/unloading-documents/prompt/001-1.html b/testing/web-platform/tests/html/browsers/browsing-the-web/unloading-documents/prompt/001-1.html
new file mode 100644
index 0000000000..b68afc49ec
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/unloading-documents/prompt/001-1.html
@@ -0,0 +1,10 @@
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/unloading-documents/prompt/001-2.html b/testing/web-platform/tests/html/browsers/browsing-the-web/unloading-documents/prompt/001-2.html
new file mode 100644
index 0000000000..9da0f9395c
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/unloading-documents/prompt/001-2.html
@@ -0,0 +1 @@
+001-2
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/unloading-documents/prompt/001.html b/testing/web-platform/tests/html/browsers/browsing-the-web/unloading-documents/prompt/001.html
new file mode 100644
index 0000000000..109dcc1393
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/unloading-documents/prompt/001.html
@@ -0,0 +1,14 @@
+
+beforeunload event order
+
+
+

+
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/unloading-documents/prompt/002-1.html b/testing/web-platform/tests/html/browsers/browsing-the-web/unloading-documents/prompt/002-1.html
new file mode 100644
index 0000000000..c5f57375da
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/unloading-documents/prompt/002-1.html
@@ -0,0 +1,7 @@
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/unloading-documents/prompt/002.html b/testing/web-platform/tests/html/browsers/browsing-the-web/unloading-documents/prompt/002.html
new file mode 100644
index 0000000000..d8f4fc60a9
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/unloading-documents/prompt/002.html
@@ -0,0 +1,20 @@
+
+beforeunload event properties
+
+
+

+
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/unloading-documents/prompt/003.html b/testing/web-platform/tests/html/browsers/browsing-the-web/unloading-documents/prompt/003.html
new file mode 100644
index 0000000000..5683f1b120
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/unloading-documents/prompt/003.html
@@ -0,0 +1,20 @@
+
+beforeunload event in child frame for parent navigation
+
+
+

+
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/unloading-documents/prompt/004-1.html b/testing/web-platform/tests/html/browsers/browsing-the-web/unloading-documents/prompt/004-1.html
new file mode 100644
index 0000000000..a3ca82f520
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/unloading-documents/prompt/004-1.html
@@ -0,0 +1,28 @@
+
+004-1
+
+// child frame with no onbeforeunload listener. Should leave the parent as unsalvageable.
+// Adding the iframe prevents potential implementation bugs where the the recursive steps of #prompt-to-unload-a-document
+// would overwrite the salvageable state of the parent.
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/unloading-documents/prompt/004-2.html b/testing/web-platform/tests/html/browsers/browsing-the-web/unloading-documents/prompt/004-2.html
new file mode 100644
index 0000000000..1a605b1b3d
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/unloading-documents/prompt/004-2.html
@@ -0,0 +1,5 @@
+
+004-2
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/unloading-documents/prompt/004.html b/testing/web-platform/tests/html/browsers/browsing-the-web/unloading-documents/prompt/004.html
new file mode 100644
index 0000000000..7076a4dd18
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/unloading-documents/prompt/004.html
@@ -0,0 +1,29 @@
+
+salvagable state of document after setting beforeunload listener
+
+
+

+
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/unloading-documents/prompt/manual-001.html b/testing/web-platform/tests/html/browsers/browsing-the-web/unloading-documents/prompt/manual-001.html
new file mode 100644
index 0000000000..3b7ef74b71
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/unloading-documents/prompt/manual-001.html
@@ -0,0 +1,9 @@
+
+Prompt when beforeunload is canceled
+
+
When clicking the link below, you should get a prompt asking if you want to unload the document

+Click here
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/unloading-documents/prompt/manual-002.html b/testing/web-platform/tests/html/browsers/browsing-the-web/unloading-documents/prompt/manual-002.html
new file mode 100644
index 0000000000..7be8a3301f
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/unloading-documents/prompt/manual-002.html
@@ -0,0 +1,9 @@
+
+Prompt when beforeunload has returnValue set
+
+
When clicking the link below, you should get a prompt asking if you want to unload the document

+Click here
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/unloading-documents/prompt/manual-003.html b/testing/web-platform/tests/html/browsers/browsing-the-web/unloading-documents/prompt/manual-003.html
new file mode 100644
index 0000000000..ff72b67055
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/unloading-documents/prompt/manual-003.html
@@ -0,0 +1,11 @@
+
+Prompt when beforeunload is canceled
+
+
When clicking the button below, you should get a prompt asking if you want to unload the document

+

+
+

diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/unloading-documents/prompt/manual-004.html b/testing/web-platform/tests/html/browsers/browsing-the-web/unloading-documents/prompt/manual-004.html
new file mode 100644
index 0000000000..a4d2968922
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/unloading-documents/prompt/manual-004.html
@@ -0,0 +1,11 @@
+
+Prompt on form submit
+
+
When clicking the button below, you should get a prompt asking if you want to unload the document

+

+
+

diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/unloading-documents/prompt/manual-005.html b/testing/web-platform/tests/html/browsers/browsing-the-web/unloading-documents/prompt/manual-005.html
new file mode 100644
index 0000000000..71ff0a241d
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/unloading-documents/prompt/manual-005.html
@@ -0,0 +1,22 @@
+
+Event loop pause for beforeunload
+
+
    
+
  • Click on the link below. When the prompt appears the counter at the bottom must stop incrementing.
+
  • Opt not to leave the page. The counter must start incrementing again
+

+
Click here
+

diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/unloading-documents/prompt/manual-006.html b/testing/web-platform/tests/html/browsers/browsing-the-web/unloading-documents/prompt/manual-006.html
new file mode 100644
index 0000000000..dae0340ad9
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/unloading-documents/prompt/manual-006.html
@@ -0,0 +1,9 @@
+
+Prompt when beforeunload returns string value
+
+
When clicking the link below, you should get a prompt asking if you want to unload the document

+Click here
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/unloading-documents/prompt/next.html b/testing/web-platform/tests/html/browsers/browsing-the-web/unloading-documents/prompt/next.html
new file mode 100644
index 0000000000..38e7cdd5e0
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/unloading-documents/prompt/next.html
@@ -0,0 +1,2 @@
+
+
You should have seen a prompt asking you to unload the previous document
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/unloading-documents/support/001-1.html b/testing/web-platform/tests/html/browsers/browsing-the-web/unloading-documents/support/001-1.html
new file mode 100644
index 0000000000..72f41ae3e8
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/unloading-documents/support/001-1.html
@@ -0,0 +1,23 @@
+
+
+
+
Follow this link to run the test.
+

diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/unloading-documents/support/001a.html b/testing/web-platform/tests/html/browsers/browsing-the-web/unloading-documents/support/001a.html
new file mode 100644
index 0000000000..36d4188b9e
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/unloading-documents/support/001a.html
@@ -0,0 +1,7 @@
+
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/unloading-documents/support/001b.html b/testing/web-platform/tests/html/browsers/browsing-the-web/unloading-documents/support/001b.html
new file mode 100644
index 0000000000..eaafc371a1
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/unloading-documents/support/001b.html
@@ -0,0 +1,5 @@
+
+
+
Inner frame
\ No newline at end of file
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/unloading-documents/support/002-1.html b/testing/web-platform/tests/html/browsers/browsing-the-web/unloading-documents/support/002-1.html
new file mode 100644
index 0000000000..0e6f7d967b
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/unloading-documents/support/002-1.html
@@ -0,0 +1,28 @@
+
+
+
+
+

diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/unloading-documents/support/002a.html b/testing/web-platform/tests/html/browsers/browsing-the-web/unloading-documents/support/002a.html
new file mode 100644
index 0000000000..d11f670869
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/unloading-documents/support/002a.html
@@ -0,0 +1,7 @@
+
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/unloading-documents/support/002b.html b/testing/web-platform/tests/html/browsers/browsing-the-web/unloading-documents/support/002b.html
new file mode 100644
index 0000000000..d08a7a8add
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/unloading-documents/support/002b.html
@@ -0,0 +1,5 @@
+
+
+
Inner frame
\ No newline at end of file
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/unloading-documents/support/003-1.html b/testing/web-platform/tests/html/browsers/browsing-the-web/unloading-documents/support/003-1.html
new file mode 100644
index 0000000000..b3a4754b85
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/unloading-documents/support/003-1.html
@@ -0,0 +1,23 @@
+
+
+
+
Follow this link to run the test.
+

diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/unloading-documents/support/003a.html b/testing/web-platform/tests/html/browsers/browsing-the-web/unloading-documents/support/003a.html
new file mode 100644
index 0000000000..5393fa221e
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/unloading-documents/support/003a.html
@@ -0,0 +1,8 @@
+
+
FAIL

+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/unloading-documents/support/003b.html b/testing/web-platform/tests/html/browsers/browsing-the-web/unloading-documents/support/003b.html
new file mode 100644
index 0000000000..c8f1917b85
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/unloading-documents/support/003b.html
@@ -0,0 +1,5 @@
+
+
+
Inner frame
\ No newline at end of file
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/unloading-documents/support/004-1.html b/testing/web-platform/tests/html/browsers/browsing-the-web/unloading-documents/support/004-1.html
new file mode 100644
index 0000000000..06aba08af6
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/unloading-documents/support/004-1.html
@@ -0,0 +1,25 @@
+
+
+
+
+

diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/unloading-documents/support/004a.html b/testing/web-platform/tests/html/browsers/browsing-the-web/unloading-documents/support/004a.html
new file mode 100644
index 0000000000..117e2b94ae
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/unloading-documents/support/004a.html
@@ -0,0 +1,8 @@
+
+
FAIL

+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/unloading-documents/support/004b.html b/testing/web-platform/tests/html/browsers/browsing-the-web/unloading-documents/support/004b.html
new file mode 100644
index 0000000000..788937a0b0
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/unloading-documents/support/004b.html
@@ -0,0 +1,18 @@
+
+
+
+
Inner frame
\ No newline at end of file
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/unloading-documents/support/005-1.html b/testing/web-platform/tests/html/browsers/browsing-the-web/unloading-documents/support/005-1.html
new file mode 100644
index 0000000000..7b81a9f115
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/unloading-documents/support/005-1.html
@@ -0,0 +1,13 @@
+
+
+
+
Follow this link to run the test.
+

diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/unloading-documents/support/005a.html b/testing/web-platform/tests/html/browsers/browsing-the-web/unloading-documents/support/005a.html
new file mode 100644
index 0000000000..5185d3b921
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/unloading-documents/support/005a.html
@@ -0,0 +1,8 @@
+
+
FAIL

+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/unloading-documents/support/005b.html b/testing/web-platform/tests/html/browsers/browsing-the-web/unloading-documents/support/005b.html
new file mode 100644
index 0000000000..476e8e38c4
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/unloading-documents/support/005b.html
@@ -0,0 +1,17 @@
+
+
+
+
Inner frame
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/unloading-documents/support/beforeunload-sticky-destination.html b/testing/web-platform/tests/html/browsers/browsing-the-web/unloading-documents/support/beforeunload-sticky-destination.html
new file mode 100644
index 0000000000..2edcf1a43b
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/unloading-documents/support/beforeunload-sticky-destination.html
@@ -0,0 +1,13 @@
+
+
+Beforeunload must be gated behind sticky activation: destination page
+
+
If you reached this page without clicking through a confirmation dialog, then the test has passed!
+
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/unloading-documents/support/beforeunload-sticky-start.html b/testing/web-platform/tests/html/browsers/browsing-the-web/unloading-documents/support/beforeunload-sticky-start.html
new file mode 100644
index 0000000000..37109feafe
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/unloading-documents/support/beforeunload-sticky-start.html
@@ -0,0 +1,10 @@
+
+
+Beforeunload must be gated behind sticky activation: start page
+
+
This page will immediately navigate. If a beforeunload dialog pops up, the test fails.

+
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/unloading-documents/unload/001-1.html b/testing/web-platform/tests/html/browsers/browsing-the-web/unloading-documents/unload/001-1.html
new file mode 100644
index 0000000000..74ba43954b
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/unloading-documents/unload/001-1.html
@@ -0,0 +1,4 @@
+
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/unloading-documents/unload/001-2.html b/testing/web-platform/tests/html/browsers/browsing-the-web/unloading-documents/unload/001-2.html
new file mode 100644
index 0000000000..90e28ab7fb
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/unloading-documents/unload/001-2.html
@@ -0,0 +1,2 @@
+
+Filler
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/unloading-documents/unload/001.html b/testing/web-platform/tests/html/browsers/browsing-the-web/unloading-documents/unload/001.html
new file mode 100644
index 0000000000..444a2770c7
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/unloading-documents/unload/001.html
@@ -0,0 +1,25 @@
+
+pagehide event on unload
+
+
+

+
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/unloading-documents/unload/002-1.html b/testing/web-platform/tests/html/browsers/browsing-the-web/unloading-documents/unload/002-1.html
new file mode 100644
index 0000000000..fd8e2b7262
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/unloading-documents/unload/002-1.html
@@ -0,0 +1,4 @@
+
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/unloading-documents/unload/002.html b/testing/web-platform/tests/html/browsers/browsing-the-web/unloading-documents/unload/002.html
new file mode 100644
index 0000000000..d36011286c
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/unloading-documents/unload/002.html
@@ -0,0 +1,36 @@
+
+pagehide event properties
+
+
+

+
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/unloading-documents/unload/003-1.html b/testing/web-platform/tests/html/browsers/browsing-the-web/unloading-documents/unload/003-1.html
new file mode 100644
index 0000000000..9838c79456
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/unloading-documents/unload/003-1.html
@@ -0,0 +1,4 @@
+
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/unloading-documents/unload/003.html b/testing/web-platform/tests/html/browsers/browsing-the-web/unloading-documents/unload/003.html
new file mode 100644
index 0000000000..97821be484
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/unloading-documents/unload/003.html
@@ -0,0 +1,33 @@
+
+unload event properties
+
+
+

+
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/unloading-documents/unload/004-1.html b/testing/web-platform/tests/html/browsers/browsing-the-web/unloading-documents/unload/004-1.html
new file mode 100644
index 0000000000..5d0497556b
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/unloading-documents/unload/004-1.html
@@ -0,0 +1,5 @@
+
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/unloading-documents/unload/004.html b/testing/web-platform/tests/html/browsers/browsing-the-web/unloading-documents/unload/004.html
new file mode 100644
index 0000000000..301baa3b8e
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/unloading-documents/unload/004.html
@@ -0,0 +1,28 @@
+
+pagehide / unload event order
+
+
+

+
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/unloading-documents/unload/006-1.html b/testing/web-platform/tests/html/browsers/browsing-the-web/unloading-documents/unload/006-1.html
new file mode 100644
index 0000000000..bc2e10bdc3
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/unloading-documents/unload/006-1.html
@@ -0,0 +1,23 @@
+
+006-1
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/unloading-documents/unload/006-2.html b/testing/web-platform/tests/html/browsers/browsing-the-web/unloading-documents/unload/006-2.html
new file mode 100644
index 0000000000..52365e55d8
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/unloading-documents/unload/006-2.html
@@ -0,0 +1,5 @@
+
+006-2
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/unloading-documents/unload/006.html b/testing/web-platform/tests/html/browsers/browsing-the-web/unloading-documents/unload/006.html
new file mode 100644
index 0000000000..c9e4d68a10
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/unloading-documents/unload/006.html
@@ -0,0 +1,18 @@
+
+salvagable state of document after setting pagehide listener
+
+
+

+
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/unloading-documents/unload/007-1.html b/testing/web-platform/tests/html/browsers/browsing-the-web/unloading-documents/unload/007-1.html
new file mode 100644
index 0000000000..ed19f4498a
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/unloading-documents/unload/007-1.html
@@ -0,0 +1,21 @@
+
+007-1
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/unloading-documents/unload/007-2.html b/testing/web-platform/tests/html/browsers/browsing-the-web/unloading-documents/unload/007-2.html
new file mode 100644
index 0000000000..f74cd1e67e
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/unloading-documents/unload/007-2.html
@@ -0,0 +1,5 @@
+
+007-2
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/unloading-documents/unload/007.html b/testing/web-platform/tests/html/browsers/browsing-the-web/unloading-documents/unload/007.html
new file mode 100644
index 0000000000..4a2fed5fac
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/unloading-documents/unload/007.html
@@ -0,0 +1,28 @@
+
+salvagable state of document after setting unload listener
+
+
+

+
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/unloading-documents/unload/008-1.html b/testing/web-platform/tests/html/browsers/browsing-the-web/unloading-documents/unload/008-1.html
new file mode 100644
index 0000000000..29de29c911
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/unloading-documents/unload/008-1.html
@@ -0,0 +1,4 @@
+
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/unloading-documents/unload/008.html b/testing/web-platform/tests/html/browsers/browsing-the-web/unloading-documents/unload/008.html
new file mode 100644
index 0000000000..015507d817
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/unloading-documents/unload/008.html
@@ -0,0 +1,16 @@
+
+pagehide IDL attribute
+
+
+

+
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/unloading-documents/unload/009-1.html b/testing/web-platform/tests/html/browsers/browsing-the-web/unloading-documents/unload/009-1.html
new file mode 100644
index 0000000000..d69a05914a
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/unloading-documents/unload/009-1.html
@@ -0,0 +1,4 @@
+
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/unloading-documents/unload/009.html b/testing/web-platform/tests/html/browsers/browsing-the-web/unloading-documents/unload/009.html
new file mode 100644
index 0000000000..0e93e04701
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/unloading-documents/unload/009.html
@@ -0,0 +1,16 @@
+
+unload IDL attribute
+
+
+

+
+
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/unloading-documents/unload/pagehide-manual-1.html b/testing/web-platform/tests/html/browsers/browsing-the-web/unloading-documents/unload/pagehide-manual-1.html
new file mode 100644
index 0000000000..3da0a0de3e
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/unloading-documents/unload/pagehide-manual-1.html
@@ -0,0 +1,2 @@
+
+
Now go back. PASS should be displayed after a short pause
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/unloading-documents/unload/pagehide-manual.html b/testing/web-platform/tests/html/browsers/browsing-the-web/unloading-documents/unload/pagehide-manual.html
new file mode 100644
index 0000000000..ba34c3087f
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/unloading-documents/unload/pagehide-manual.html
@@ -0,0 +1,5 @@
+
+Document salvagable state after setting pagehide handler
+
+
Click the link below then navigate back to this page. Shortly after returning you should see the text "PASS"

+
Click here
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/unloading-documents/unload/unload-main-frame-cross-origin.window.js b/testing/web-platform/tests/html/browsers/browsing-the-web/unloading-documents/unload/unload-main-frame-cross-origin.window.js
new file mode 100644
index 0000000000..65b4e533f6
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/unloading-documents/unload/unload-main-frame-cross-origin.window.js
@@ -0,0 +1,34 @@
+// META: title=Unload runs in main frame when navigating cross-origin.
+// META: script=/common/dispatcher/dispatcher.js
+// META: script=/common/get-host-info.sub.js
+// META: script=/common/utils.js
+// META: script=/html/browsers/browsing-the-web/remote-context-helper/resources/remote-context-helper.js
+
+promise_test(async t => {
+  const rcHelper = new RemoteContextHelper();
+
+  const rc1 = await rcHelper.addWindow();
+
+  t.add_cleanup(() => localStorage.removeItem('unload'));
+
+  // Initialize storage and add "unload" event handler.
+  await rc1.executeScript(() => {
+    localStorage.setItem('unload', 'not yet');
+    addEventListener('unload', () => {
+      localStorage.setItem('unload', 'ran');
+    });
+  });
+
+  // Navigate away.
+  const rc2 = await rc1.navigateToNew(
+      {extraRemoteContextConfig: {origin: 'HTTP_REMOTE_ORIGIN'}});
+
+  // Navigate back.
+  await rc2.historyBack();
+
+  // Test that the unload handler wrote to storage.
+  // Running it in the remote context after going back should ensure that the
+  // navigation (and therefore the unload handler) has completed.
+  assert_equals(
+      await rc1.executeScript(() => localStorage.getItem('unload')), 'ran');
+});
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/unloading-documents/unload/unload-main-frame-same-origin.window.js b/testing/web-platform/tests/html/browsers/browsing-the-web/unloading-documents/unload/unload-main-frame-same-origin.window.js
new file mode 100644
index 0000000000..5a95455c4c
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/unloading-documents/unload/unload-main-frame-same-origin.window.js
@@ -0,0 +1,33 @@
+// META: title=Unload runs in main frame when navigating same-origin.
+// META: script=/common/dispatcher/dispatcher.js
+// META: script=/common/get-host-info.sub.js
+// META: script=/common/utils.js
+// META: script=/html/browsers/browsing-the-web/remote-context-helper/resources/remote-context-helper.js
+
+promise_test(async t => {
+  const rcHelper = new RemoteContextHelper();
+
+  const rc1 = await rcHelper.addWindow();
+
+  t.add_cleanup(() => localStorage.removeItem('unload'));
+
+  // Initialize storage and add "unload" event handler.
+  await rc1.executeScript(() => {
+    localStorage.setItem('unload', 'not yet');
+    addEventListener('unload', () => {
+      localStorage.setItem('unload', 'ran');
+    });
+  });
+
+  // Navigate away.
+  const rc2 = await rc1.navigateToNew();
+
+  // Navigate back.
+  await rc2.historyBack();
+
+  // Test that the unload handler wrote to storage.
+  // Running it in the remote context after going back should ensure that the
+  // navigation (and therefore the unload handler) has completed.
+  assert_equals(
+      await rc1.executeScript(() => localStorage.getItem('unload')), 'ran');
+});
diff --git a/testing/web-platform/tests/html/browsers/history/joint-session-history/joint-session-history-child1.html b/testing/web-platform/tests/html/browsers/history/joint-session-history/joint-session-history-child1.html
new file mode 100644
index 0000000000..22bb0b2980
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/history/joint-session-history/joint-session-history-child1.html
@@ -0,0 +1,18 @@
+
+  Child1.
+  
+
+
diff --git a/testing/web-platform/tests/html/browsers/history/joint-session-history/joint-session-history-child2.html b/testing/web-platform/tests/html/browsers/history/joint-session-history/joint-session-history-child2.html
new file mode 100644
index 0000000000..24b4695166
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/history/joint-session-history/joint-session-history-child2.html
@@ -0,0 +1,5 @@
+Child 2.
+
diff --git a/testing/web-platform/tests/html/browsers/history/joint-session-history/joint-session-history-filler.html b/testing/web-platform/tests/html/browsers/history/joint-session-history/joint-session-history-filler.html
new file mode 100644
index 0000000000..b6d47c310b
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/history/joint-session-history/joint-session-history-filler.html
@@ -0,0 +1 @@
+Filler
diff --git a/testing/web-platform/tests/html/browsers/history/joint-session-history/joint-session-history-grandchild1.html b/testing/web-platform/tests/html/browsers/history/joint-session-history/joint-session-history-grandchild1.html
new file mode 100644
index 0000000000..d05e152425
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/history/joint-session-history/joint-session-history-grandchild1.html
@@ -0,0 +1,8 @@
+
+  Grandchild1.
+
+
diff --git a/testing/web-platform/tests/html/browsers/history/joint-session-history/joint-session-history-grandchild2.html b/testing/web-platform/tests/html/browsers/history/joint-session-history/joint-session-history-grandchild2.html
new file mode 100644
index 0000000000..b5c81e1fca
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/history/joint-session-history/joint-session-history-grandchild2.html
@@ -0,0 +1,5 @@
+Grandchild2.
+
diff --git a/testing/web-platform/tests/html/browsers/history/joint-session-history/joint-session-history-iframe-state.html b/testing/web-platform/tests/html/browsers/history/joint-session-history/joint-session-history-iframe-state.html
new file mode 100644
index 0000000000..ffa64c0b35
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/history/joint-session-history/joint-session-history-iframe-state.html
@@ -0,0 +1,41 @@
+
+
+Joint session history should not override parent's state.
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/history/joint-session-history/joint-session-history-only-fully-active.html b/testing/web-platform/tests/html/browsers/history/joint-session-history/joint-session-history-only-fully-active.html
new file mode 100644
index 0000000000..c42d160a21
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/history/joint-session-history/joint-session-history-only-fully-active.html
@@ -0,0 +1,30 @@
+
+
+Do only fully active documents count for session history?
+
+
+
+  
+
+
diff --git a/testing/web-platform/tests/html/browsers/history/joint-session-history/joint-session-history-remove-iframe.html b/testing/web-platform/tests/html/browsers/history/joint-session-history/joint-session-history-remove-iframe.html
new file mode 100644
index 0000000000..ee7aa368af
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/history/joint-session-history/joint-session-history-remove-iframe.html
@@ -0,0 +1,24 @@
+
+
+Joint session history length does not include entries from a removed iframe.
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/history/the-history-interface/001.html b/testing/web-platform/tests/html/browsers/history/the-history-interface/001.html
new file mode 100644
index 0000000000..16cb834c78
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/history/the-history-interface/001.html
@@ -0,0 +1,339 @@
+
+
+    
+        history.pushState tests
+        
+        
+        
+    
+    
+
+        
Enable JavaScript and reload

+        
WARNING: This test should always be loaded in a new tab/window, to avoid browsers attempting to recover the state of frames, and history length. Do not reload the test.

+        
Running test...

+        

+        

+        

+        

+
+    
+
diff --git a/testing/web-platform/tests/html/browsers/history/the-history-interface/002.html b/testing/web-platform/tests/html/browsers/history/the-history-interface/002.html
new file mode 100644
index 0000000000..8bce7e72ff
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/history/the-history-interface/002.html
@@ -0,0 +1,318 @@
+
+
+    
+        history.replaceState tests
+        
+        
+        
+    
+    
+
+        
+        
WARNING: This test should always be loaded in a new tab/window, to avoid browsers attempting to recover the state of frames, and history length. Do not reload the test.

+        
Running test...

+        

+        

+        

+        

+
+    
+
diff --git a/testing/web-platform/tests/html/browsers/history/the-history-interface/004.html b/testing/web-platform/tests/html/browsers/history/the-history-interface/004.html
new file mode 100644
index 0000000000..e69889724f
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/history/the-history-interface/004.html
@@ -0,0 +1,62 @@
+
+
+  
+    Final history position for history.go should be calculated when executing the task
+    
+    
+    
+  
+  
+
+    
+    

+
+  
+
diff --git a/testing/web-platform/tests/html/browsers/history/the-history-interface/005.html b/testing/web-platform/tests/html/browsers/history/the-history-interface/005.html
new file mode 100644
index 0000000000..2152e85a3e
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/history/the-history-interface/005.html
@@ -0,0 +1,47 @@
+
+
+  
+    Popstate event listener registration
+    
+    
+    
+  
+  
+
+    
+    

+
+  
+
diff --git a/testing/web-platform/tests/html/browsers/history/the-history-interface/006.html b/testing/web-platform/tests/html/browsers/history/the-history-interface/006.html
new file mode 100644
index 0000000000..442b6f8f1e
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/history/the-history-interface/006.html
@@ -0,0 +1,53 @@
+
+
+  
+    Firing popstate after onload, even if there is no pushed/replaced state
+    
+    
+    
+  
+  
+
+    
+    

+
+  
+
diff --git a/testing/web-platform/tests/html/browsers/history/the-history-interface/007.html b/testing/web-platform/tests/html/browsers/history/the-history-interface/007.html
new file mode 100644
index 0000000000..decb197624
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/history/the-history-interface/007.html
@@ -0,0 +1,66 @@
+
+
+  
+    Firing popstate after onload with pushed state
+                
+    
+    
+  
+  
+
+    
+    
It looks like the browser stopped loading the page when encountering a .go(-1) command pointing to a pushed state. This will break the tests.

+    
+
+  
+  
+  
+  
+
diff --git a/testing/web-platform/tests/html/browsers/history/the-history-interface/008.html b/testing/web-platform/tests/html/browsers/history/the-history-interface/008.html
new file mode 100644
index 0000000000..c8071e3156
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/history/the-history-interface/008.html
@@ -0,0 +1,40 @@
+
+
+
+
+
+  
+    history.pushState/replaceState resolving
+    
+    
+  
+  
+
+    

+    
+    

+    
+
+  
+
diff --git a/testing/web-platform/tests/html/browsers/history/the-history-interface/008.js b/testing/web-platform/tests/html/browsers/history/the-history-interface/008.js
new file mode 100644
index 0000000000..96a1fe5d4a
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/history/the-history-interface/008.js
@@ -0,0 +1,11 @@
+var beforehref = location.href;
+
+test(function () {
+  history.pushState('','','/testing_ignore_me_404');
+  assert_equals(location.href,beforehref.replace(/^(\w*:\/\/[^\/]*\/)[\w\W]*$/,'$1testing_ignore_me_404'));
+}, 'history.pushState URL resolving should be done relative to the document, not the script');
+
+test(function () {
+  history.replaceState('','','/testing_ignore_me_404_2');
+  assert_equals(location.href,beforehref.replace(/^(\w*:\/\/[^\/]*\/)[\w\W]*$/,'$1testing_ignore_me_404_2'));
+}, 'history.replaceState URL resolving should be done relative to the document, not the script');
diff --git a/testing/web-platform/tests/html/browsers/history/the-history-interface/009-1.html b/testing/web-platform/tests/html/browsers/history/the-history-interface/009-1.html
new file mode 100644
index 0000000000..00b72e8ec6
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/history/the-history-interface/009-1.html
@@ -0,0 +1,20 @@
+
+
+  
+    history.pushState/replaceState and referer headers
+  
+  
+
+    
+    

+    
+
+  
+
diff --git a/testing/web-platform/tests/html/browsers/history/the-history-interface/009-3.html b/testing/web-platform/tests/html/browsers/history/the-history-interface/009-3.html
new file mode 100644
index 0000000000..e58b8fa5e7
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/history/the-history-interface/009-3.html
@@ -0,0 +1,28 @@
+
+
+        
+                history.pushState/replaceState and referer headers
+        
+        
+
+                
+                

+                
+
+        
+
diff --git a/testing/web-platform/tests/html/browsers/history/the-history-interface/009-5.html b/testing/web-platform/tests/html/browsers/history/the-history-interface/009-5.html
new file mode 100644
index 0000000000..068a089af4
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/history/the-history-interface/009-5.html
@@ -0,0 +1,23 @@
+
+
+        
+                history.pushState/replaceState and referer headers
+        
+        
+
+                
+                

+                
+
+        
+
diff --git a/testing/web-platform/tests/html/browsers/history/the-history-interface/009.html b/testing/web-platform/tests/html/browsers/history/the-history-interface/009.html
new file mode 100644
index 0000000000..c1ae0bbe03
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/history/the-history-interface/009.html
@@ -0,0 +1,22 @@
+
+
+  
+    history.pushState/replaceState and referer headers
+    
+    
+  
+  
+
+    
+    

+    
+
+  
+
diff --git a/testing/web-platform/tests/html/browsers/history/the-history-interface/010-1.html b/testing/web-platform/tests/html/browsers/history/the-history-interface/010-1.html
new file mode 100644
index 0000000000..683397745c
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/history/the-history-interface/010-1.html
@@ -0,0 +1,16 @@
+
+
+  
+    history.pushState/replaceState and referer headers (before onload)
+  
+  
+
+    
+    

+    
+
+  
+
diff --git a/testing/web-platform/tests/html/browsers/history/the-history-interface/010-3.html b/testing/web-platform/tests/html/browsers/history/the-history-interface/010-3.html
new file mode 100644
index 0000000000..b80f56c3dd
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/history/the-history-interface/010-3.html
@@ -0,0 +1,24 @@
+
+
+        
+                history.pushState/replaceState and referer headers (before onload)
+        
+        
+
+                
+                

+                
+
+        
+
diff --git a/testing/web-platform/tests/html/browsers/history/the-history-interface/010-5.html b/testing/web-platform/tests/html/browsers/history/the-history-interface/010-5.html
new file mode 100644
index 0000000000..d150449eb2
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/history/the-history-interface/010-5.html
@@ -0,0 +1,23 @@
+
+
+        
+                history.pushState/replaceState and referer headers (before onload)
+        
+        
+
+                
+                

+                
+
+        
+
diff --git a/testing/web-platform/tests/html/browsers/history/the-history-interface/010.html b/testing/web-platform/tests/html/browsers/history/the-history-interface/010.html
new file mode 100644
index 0000000000..ca109a744b
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/history/the-history-interface/010.html
@@ -0,0 +1,22 @@
+
+
+  
+    history.pushState/replaceState and referer headers (before onload)
+    
+    
+  
+  
+
+    
+    

+    
+
+  
+
diff --git a/testing/web-platform/tests/html/browsers/history/the-history-interface/011.html b/testing/web-platform/tests/html/browsers/history/the-history-interface/011.html
new file mode 100644
index 0000000000..4043aff7fd
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/history/the-history-interface/011.html
@@ -0,0 +1,32 @@
+
+
+  
+    history.pushState before onload
+    
+    
+  
+  
+
+    
+    

+    
+
+  
+
diff --git a/testing/web-platform/tests/html/browsers/history/the-history-interface/012.html b/testing/web-platform/tests/html/browsers/history/the-history-interface/012.html
new file mode 100644
index 0000000000..f5e6251671
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/history/the-history-interface/012.html
@@ -0,0 +1,32 @@
+
+
+  
+    history.replaceState before onload
+    
+    
+  
+  
+
+    
+    

+    
+
+  
+
diff --git a/testing/web-platform/tests/html/browsers/history/the-history-interface/blank-new.html b/testing/web-platform/tests/html/browsers/history/the-history-interface/blank-new.html
new file mode 100644
index 0000000000..2a545af0ed
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/history/the-history-interface/blank-new.html
@@ -0,0 +1,5 @@
+
+
+  New page
+
+This is a new page.
diff --git a/testing/web-platform/tests/html/browsers/history/the-history-interface/blank-old.html b/testing/web-platform/tests/html/browsers/history/the-history-interface/blank-old.html
new file mode 100644
index 0000000000..a77c00fcc6
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/history/the-history-interface/blank-old.html
@@ -0,0 +1,5 @@
+
+
+  Old page
+
+This is an old page.
diff --git a/testing/web-platform/tests/html/browsers/history/the-history-interface/blank.html b/testing/web-platform/tests/html/browsers/history/the-history-interface/blank.html
new file mode 100644
index 0000000000..89c8724c09
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/history/the-history-interface/blank.html
@@ -0,0 +1,8 @@
+
+
+  
+    Dummy page 1
+  
+  
+  
+
\ No newline at end of file
diff --git a/testing/web-platform/tests/html/browsers/history/the-history-interface/blank2.html b/testing/web-platform/tests/html/browsers/history/the-history-interface/blank2.html
new file mode 100644
index 0000000000..f79982e328
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/history/the-history-interface/blank2.html
@@ -0,0 +1,13 @@
+
+
+  
+    Dummy page 2
+  
+  
+    
+  
+
\ No newline at end of file
diff --git a/testing/web-platform/tests/html/browsers/history/the-history-interface/blank3.html b/testing/web-platform/tests/html/browsers/history/the-history-interface/blank3.html
new file mode 100644
index 0000000000..2a8989f272
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/history/the-history-interface/blank3.html
@@ -0,0 +1,11 @@
+
+
+  
+    Dummy page 3
+    
+  
+  
+  
+
\ No newline at end of file
diff --git a/testing/web-platform/tests/html/browsers/history/the-history-interface/combination_history_001.html b/testing/web-platform/tests/html/browsers/history/the-history-interface/combination_history_001.html
new file mode 100644
index 0000000000..21ba22f6fe
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/history/the-history-interface/combination_history_001.html
@@ -0,0 +1,20 @@
+
+
+  
+    combination_history_001(Combine pushState and replaceSate methods.)
+    
+    
+  
+  
+    

+    
+  
+
diff --git a/testing/web-platform/tests/html/browsers/history/the-history-interface/combination_history_002.html b/testing/web-platform/tests/html/browsers/history/the-history-interface/combination_history_002.html
new file mode 100644
index 0000000000..29e82f51be
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/history/the-history-interface/combination_history_002.html
@@ -0,0 +1,22 @@
+
+
+  
+    combination_history_002(After calling of pushState method, check length.)
+    
+    
+  
+  
+    

+    
+  
+
diff --git a/testing/web-platform/tests/html/browsers/history/the-history-interface/combination_history_003.html b/testing/web-platform/tests/html/browsers/history/the-history-interface/combination_history_003.html
new file mode 100644
index 0000000000..7467d9b294
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/history/the-history-interface/combination_history_003.html
@@ -0,0 +1,26 @@
+
+
+  
+    combination_history_003(After calling of pushState and replaceState methods, check length.)
+    
+    
+  
+  
+    

+    
+  
+
diff --git a/testing/web-platform/tests/html/browsers/history/the-history-interface/combination_history_004.html b/testing/web-platform/tests/html/browsers/history/the-history-interface/combination_history_004.html
new file mode 100644
index 0000000000..4e38b56205
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/history/the-history-interface/combination_history_004.html
@@ -0,0 +1,29 @@
+
+
+  
+    combination_history_004(After calling of back method, check length.)
+    
+    
+  
+  
+    

+    
+  
+
diff --git a/testing/web-platform/tests/html/browsers/history/the-history-interface/combination_history_005.html b/testing/web-platform/tests/html/browsers/history/the-history-interface/combination_history_005.html
new file mode 100644
index 0000000000..4487678015
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/history/the-history-interface/combination_history_005.html
@@ -0,0 +1,34 @@
+
+
+  
+    combination_history_005(After calling of forward method, check length.)
+    
+    
+  
+  
+    

+    
+  
+
diff --git a/testing/web-platform/tests/html/browsers/history/the-history-interface/combination_history_006.html b/testing/web-platform/tests/html/browsers/history/the-history-interface/combination_history_006.html
new file mode 100644
index 0000000000..305f593c09
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/history/the-history-interface/combination_history_006.html
@@ -0,0 +1,30 @@
+
+
+  
+    combination_history_006(After calling of go method, check length.)
+    
+    
+  
+  
+    

+    
+  
+
diff --git a/testing/web-platform/tests/html/browsers/history/the-history-interface/combination_history_007.html b/testing/web-platform/tests/html/browsers/history/the-history-interface/combination_history_007.html
new file mode 100644
index 0000000000..cec9ea0981
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/history/the-history-interface/combination_history_007.html
@@ -0,0 +1,32 @@
+
+
+  
+    combination_history_007(After calling of back and pushState method, check length.)
+    
+    
+  
+  
+    

+    
+  
+
diff --git a/testing/web-platform/tests/html/browsers/history/the-history-interface/history-associated-with-document.window.js b/testing/web-platform/tests/html/browsers/history/the-history-interface/history-associated-with-document.window.js
new file mode 100644
index 0000000000..94c1b2cf6b
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/history/the-history-interface/history-associated-with-document.window.js
@@ -0,0 +1,6 @@
+// META: title=the History object must be associated with the Document object, not the Window object
+// META: script=/common/object-association.js
+
+// See https://github.com/whatwg/html/issues/2566.
+
+testIsPerDocument("history");
diff --git a/testing/web-platform/tests/html/browsers/history/the-history-interface/history-state-after-bfcache.window.js b/testing/web-platform/tests/html/browsers/history/the-history-interface/history-state-after-bfcache.window.js
new file mode 100644
index 0000000000..5f04890a72
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/history/the-history-interface/history-state-after-bfcache.window.js
@@ -0,0 +1,43 @@
+// META: title=Navigating back to a bfcached page does not reset history.state
+// META: script=/common/dispatcher/dispatcher.js
+// META: script=/common/utils.js
+// META: script=/html/browsers/browsing-the-web/remote-context-helper/resources/remote-context-helper.js
+
+// See https://github.com/whatwg/html/issues/6652.
+
+'use strict';
+
+promise_test(async t => {
+  const rcHelper = new RemoteContextHelper();
+
+  // Open a window with noopener so that BFCache will work.
+  const rc = await rcHelper.addWindow(null, { features: "noopener" });
+
+  // Add a pageshow listener to stash the event, and set history.state using replaceState().
+  await rc.executeScript(() => {
+    window.addEventListener('pageshow', (event) => {
+      window.pageshowEvent = event;
+    });
+
+    history.replaceState({ foo: 'bar' }, '', '');
+    window.stashedHistoryState = history.state;
+  });
+
+  const rc2 = await rc.navigateToNew();
+  await rc2.historyBack();
+
+  assert_implements_optional(
+    await rc.executeScript(() => window.pageshowEvent.persisted),
+    'precondition: document was bfcached'
+  );
+
+  assert_equals(
+    await rc.executeScript(() => history.state.foo),
+    'bar',
+    'history.state was restored correctly'
+  );
+
+  assert_true(
+    await rc.executeScript(() => window.stashedHistoryState === history.state),
+    'history.state did not get serialized and deserialized');
+});
diff --git a/testing/web-platform/tests/html/browsers/history/the-history-interface/history.js b/testing/web-platform/tests/html/browsers/history/the-history-interface/history.js
new file mode 100644
index 0000000000..bb5ee6dde0
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/history/the-history-interface/history.js
@@ -0,0 +1,35 @@
+function parse_query() {
+    var query = location.search.slice(1);
+    var vars = query.split("&");
+    var fields = {};
+    vars.forEach(
+        function (x) {
+            var split = x.split("=");
+            return fields[split[0]] = split.slice(1).join("=");
+        });
+    return fields;
+}
+
+var query_parts = parse_query();
+var id = "id" in query_parts ? parseInt(query_parts.id) : 1;
+var urls_to_load = query_parts.urls.split(",");
+
+document.write(id);
+
+onunload = function() {};
+
+function queue_next() {
+    t = opener.t;
+    setTimeout(t.step_func(
+        function() {
+//            opener.assert_equals(history.length, id);
+            if (urls_to_load[0]) {
+                var next_page = urls_to_load[0];
+                (next_page.indexOf("?") > -1) ? (next_page += "&") : (next_page += "?");
+                next_page += "urls=" + urls_to_load.slice(1).join(",");
+                next_page += "&id=" + ++id;
+                location = next_page;
+            }
+        }
+    ), 100);
+}
diff --git a/testing/web-platform/tests/html/browsers/history/the-history-interface/history_back-1.html b/testing/web-platform/tests/html/browsers/history/the-history-interface/history_back-1.html
new file mode 100644
index 0000000000..78547019f3
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/history/the-history-interface/history_back-1.html
@@ -0,0 +1,17 @@
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/history/the-history-interface/history_back.html b/testing/web-platform/tests/html/browsers/history/the-history-interface/history_back.html
new file mode 100644
index 0000000000..042da4e61b
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/history/the-history-interface/history_back.html
@@ -0,0 +1,27 @@
+
+
+  
+    history_back
+    
+    
+  
+  
+    

+    
+  
+
diff --git a/testing/web-platform/tests/html/browsers/history/the-history-interface/history_back_1.html b/testing/web-platform/tests/html/browsers/history/the-history-interface/history_back_1.html
new file mode 100644
index 0000000000..8ccf205956
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/history/the-history-interface/history_back_1.html
@@ -0,0 +1,28 @@
+
+history.back() with session history
+
+
+

+
diff --git a/testing/web-platform/tests/html/browsers/history/the-history-interface/history_back_cross_realm_method.html b/testing/web-platform/tests/html/browsers/history/the-history-interface/history_back_cross_realm_method.html
new file mode 100644
index 0000000000..47937ef583
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/history/the-history-interface/history_back_cross_realm_method.html
@@ -0,0 +1,22 @@
+
+
+history.back() uses this's associated document's browsing context to determine if navigation is allowed
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/history/the-history-interface/history_entry.html b/testing/web-platform/tests/html/browsers/history/the-history-interface/history_entry.html
new file mode 100644
index 0000000000..e5929ddbe8
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/history/the-history-interface/history_entry.html
@@ -0,0 +1,12 @@
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/history/the-history-interface/history_forward-1.html b/testing/web-platform/tests/html/browsers/history/the-history-interface/history_forward-1.html
new file mode 100644
index 0000000000..5880eacf04
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/history/the-history-interface/history_forward-1.html
@@ -0,0 +1,15 @@
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/history/the-history-interface/history_forward-2.html b/testing/web-platform/tests/html/browsers/history/the-history-interface/history_forward-2.html
new file mode 100644
index 0000000000..c7a9a10682
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/history/the-history-interface/history_forward-2.html
@@ -0,0 +1,17 @@
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/history/the-history-interface/history_forward.html b/testing/web-platform/tests/html/browsers/history/the-history-interface/history_forward.html
new file mode 100644
index 0000000000..6c37f25215
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/history/the-history-interface/history_forward.html
@@ -0,0 +1,32 @@
+
+
+  
+    history_forward
+    
+    
+  
+  
+    

+    
+  
+
diff --git a/testing/web-platform/tests/html/browsers/history/the-history-interface/history_forward_1.html b/testing/web-platform/tests/html/browsers/history/the-history-interface/history_forward_1.html
new file mode 100644
index 0000000000..220495c7f6
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/history/the-history-interface/history_forward_1.html
@@ -0,0 +1,28 @@
+
+history.forward() with session history
+
+
+

+
diff --git a/testing/web-platform/tests/html/browsers/history/the-history-interface/history_forward_cross_realm_method.html b/testing/web-platform/tests/html/browsers/history/the-history-interface/history_forward_cross_realm_method.html
new file mode 100644
index 0000000000..7456099b8f
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/history/the-history-interface/history_forward_cross_realm_method.html
@@ -0,0 +1,28 @@
+
+
+history.forward() uses this's associated document's browsing context to determine if navigation is allowed
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/history/the-history-interface/history_go_cross_realm_method.html b/testing/web-platform/tests/html/browsers/history/the-history-interface/history_go_cross_realm_method.html
new file mode 100644
index 0000000000..d8852b9f6f
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/history/the-history-interface/history_go_cross_realm_method.html
@@ -0,0 +1,23 @@
+
+
+history.go() uses this's associated document's browsing context to determine if navigation is allowed
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/history/the-history-interface/history_go_minus.html b/testing/web-platform/tests/html/browsers/history/the-history-interface/history_go_minus.html
new file mode 100644
index 0000000000..b8fe75573d
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/history/the-history-interface/history_go_minus.html
@@ -0,0 +1,27 @@
+
+
+  
+    history_go_minus
+    
+    
+  
+  
+    

+    
+  
+
diff --git a/testing/web-platform/tests/html/browsers/history/the-history-interface/history_go_no_argument-1.html b/testing/web-platform/tests/html/browsers/history/the-history-interface/history_go_no_argument-1.html
new file mode 100644
index 0000000000..acd9bda31d
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/history/the-history-interface/history_go_no_argument-1.html
@@ -0,0 +1,18 @@
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/history/the-history-interface/history_go_no_argument.html b/testing/web-platform/tests/html/browsers/history/the-history-interface/history_go_no_argument.html
new file mode 100644
index 0000000000..68aeab2027
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/history/the-history-interface/history_go_no_argument.html
@@ -0,0 +1,29 @@
+
+history.go()
+
+
+

+
diff --git a/testing/web-platform/tests/html/browsers/history/the-history-interface/history_go_plus.html b/testing/web-platform/tests/html/browsers/history/the-history-interface/history_go_plus.html
new file mode 100644
index 0000000000..74d4c588ca
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/history/the-history-interface/history_go_plus.html
@@ -0,0 +1,33 @@
+
+
+  
+    history_go_plus
+    
+    
+  
+  
+    

+    
+  
+
diff --git a/testing/web-platform/tests/html/browsers/history/the-history-interface/history_go_to_uri-1.html b/testing/web-platform/tests/html/browsers/history/the-history-interface/history_go_to_uri-1.html
new file mode 100644
index 0000000000..46c744e95d
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/history/the-history-interface/history_go_to_uri-1.html
@@ -0,0 +1,23 @@
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/history/the-history-interface/history_go_to_uri.html b/testing/web-platform/tests/html/browsers/history/the-history-interface/history_go_to_uri.html
new file mode 100644
index 0000000000..43d4a6b001
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/history/the-history-interface/history_go_to_uri.html
@@ -0,0 +1,32 @@
+
+history.go() negative tests
+
+
+
+
+
+

+
diff --git a/testing/web-platform/tests/html/browsers/history/the-history-interface/history_go_undefined-1.html b/testing/web-platform/tests/html/browsers/history/the-history-interface/history_go_undefined-1.html
new file mode 100644
index 0000000000..5880eacf04
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/history/the-history-interface/history_go_undefined-1.html
@@ -0,0 +1,15 @@
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/history/the-history-interface/history_go_undefined.html b/testing/web-platform/tests/html/browsers/history/the-history-interface/history_go_undefined.html
new file mode 100644
index 0000000000..ddb0c858c2
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/history/the-history-interface/history_go_undefined.html
@@ -0,0 +1,28 @@
+
+history.forward() with session history
+
+
+

+
diff --git a/testing/web-platform/tests/html/browsers/history/the-history-interface/history_go_zero-1.html b/testing/web-platform/tests/html/browsers/history/the-history-interface/history_go_zero-1.html
new file mode 100644
index 0000000000..d9d4f330b2
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/history/the-history-interface/history_go_zero-1.html
@@ -0,0 +1,18 @@
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/history/the-history-interface/history_go_zero.html b/testing/web-platform/tests/html/browsers/history/the-history-interface/history_go_zero.html
new file mode 100644
index 0000000000..88750921b0
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/history/the-history-interface/history_go_zero.html
@@ -0,0 +1,29 @@
+
+history.go(0)
+
+
+

+
diff --git a/testing/web-platform/tests/html/browsers/history/the-history-interface/history_go_zero_which_document.window.js b/testing/web-platform/tests/html/browsers/history/the-history-interface/history_go_zero_which_document.window.js
new file mode 100644
index 0000000000..f697783f3e
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/history/the-history-interface/history_go_zero_which_document.window.js
@@ -0,0 +1,27 @@
+// META: title=history.go(0) on an iframe must reload the iframe's document, not the parent document
+// META: script=/common/dispatcher/dispatcher.js
+// META: script=/common/utils.js
+// META: script=/html/browsers/browsing-the-web/remote-context-helper/resources/remote-context-helper.js
+
+promise_test(async () => {
+  const rcHelper = new RemoteContextHelper();
+  const main = await rcHelper.addWindow();
+  await main.addIframe();
+
+  await main.executeScript(() => {
+    window.didNotGetReloaded = true;
+
+    const iframe = document.querySelector("iframe");
+
+    // This goes beyond the original test case in https://github.com/whatwg/html/issues/2436, and
+    // tests where current realm != relevant realm. The spec says to use relevant realm so the
+    // result is still, iframe must reload, not parent.
+    History.prototype.go.call(iframe.contentWindow.history, 0);
+
+    return new Promise(resolve => {
+      iframe.addEventListener("load", resolve);
+    });
+  });
+
+  assert_true(await main.executeScript(() => window.didNotGetReloaded));
+});
diff --git a/testing/web-platform/tests/html/browsers/history/the-history-interface/history_properties_only_fully_active.html b/testing/web-platform/tests/html/browsers/history/the-history-interface/history_properties_only_fully_active.html
new file mode 100644
index 0000000000..2b2c308526
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/history/the-history-interface/history_properties_only_fully_active.html
@@ -0,0 +1,23 @@
+
+history properties should throw SecurityError when not in a fully active Document
+
+
+
+  
+
+
diff --git a/testing/web-platform/tests/html/browsers/history/the-history-interface/history_pushstate.html b/testing/web-platform/tests/html/browsers/history/the-history-interface/history_pushstate.html
new file mode 100644
index 0000000000..5180a3f6e5
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/history/the-history-interface/history_pushstate.html
@@ -0,0 +1,19 @@
+
+
+  
+    history_pushState
+    
+    
+  
+  
+    

+    
+  
+
diff --git a/testing/web-platform/tests/html/browsers/history/the-history-interface/history_pushstate_err.html b/testing/web-platform/tests/html/browsers/history/the-history-interface/history_pushstate_err.html
new file mode 100644
index 0000000000..6fa0a8589d
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/history/the-history-interface/history_pushstate_err.html
@@ -0,0 +1,18 @@
+
+
+  
+    history_pushState SECURITY_ERR
+    
+    
+  
+  
+    

+    
+ 
+
diff --git a/testing/web-platform/tests/html/browsers/history/the-history-interface/history_pushstate_nooptionalparam.html b/testing/web-platform/tests/html/browsers/history/the-history-interface/history_pushstate_nooptionalparam.html
new file mode 100644
index 0000000000..8e4b049a19
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/history/the-history-interface/history_pushstate_nooptionalparam.html
@@ -0,0 +1,20 @@
+
+
+  
+    history_pushState_NoOptionalParam
+    
+    
+  
+  
+    

+    
+  
+
diff --git a/testing/web-platform/tests/html/browsers/history/the-history-interface/history_pushstate_url.html b/testing/web-platform/tests/html/browsers/history/the-history-interface/history_pushstate_url.html
new file mode 100644
index 0000000000..cfbca35bfd
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/history/the-history-interface/history_pushstate_url.html
@@ -0,0 +1,24 @@
+
+
+
+
+History pushState sets the url
+
+
+
+
+

+
+
+
diff --git a/testing/web-platform/tests/html/browsers/history/the-history-interface/history_pushstate_url_rewriting.html b/testing/web-platform/tests/html/browsers/history/the-history-interface/history_pushstate_url_rewriting.html
new file mode 100644
index 0000000000..03c2afe8ea
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/history/the-history-interface/history_pushstate_url_rewriting.html
@@ -0,0 +1,176 @@
+
+
+URL rewriting allowed/disallowed for history.pushState()
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/history/the-history-interface/history_replacestate.html b/testing/web-platform/tests/html/browsers/history/the-history-interface/history_replacestate.html
new file mode 100644
index 0000000000..794c2f3713
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/history/the-history-interface/history_replacestate.html
@@ -0,0 +1,20 @@
+
+
+  
+    history_replaceState
+    
+    
+  
+  
+    

+    
+  
+
diff --git a/testing/web-platform/tests/html/browsers/history/the-history-interface/history_replacestate_err.html b/testing/web-platform/tests/html/browsers/history/the-history-interface/history_replacestate_err.html
new file mode 100644
index 0000000000..15d2181820
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/history/the-history-interface/history_replacestate_err.html
@@ -0,0 +1,18 @@
+
+
+  
+    history_replaceState SECURITY_ERR
+    
+    
+  
+  
+    

+    
+  
+
diff --git a/testing/web-platform/tests/html/browsers/history/the-history-interface/history_replacestate_nooptionalparam.html b/testing/web-platform/tests/html/browsers/history/the-history-interface/history_replacestate_nooptionalparam.html
new file mode 100644
index 0000000000..838467d782
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/history/the-history-interface/history_replacestate_nooptionalparam.html
@@ -0,0 +1,20 @@
+
+
+  
+    history_replaceStateNoOptionalParam
+    
+    
+  
+  
+    

+    
+  
+
diff --git a/testing/web-platform/tests/html/browsers/history/the-history-interface/history_state.html b/testing/web-platform/tests/html/browsers/history/the-history-interface/history_state.html
new file mode 100644
index 0000000000..2ee2356b1a
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/history/the-history-interface/history_state.html
@@ -0,0 +1,24 @@
+
+
+  
+    history_state
+    
+    
+  
+  
+    

+    
+  
+
diff --git a/testing/web-platform/tests/html/browsers/history/the-history-interface/iframe_history_go_0.html b/testing/web-platform/tests/html/browsers/history/the-history-interface/iframe_history_go_0.html
new file mode 100644
index 0000000000..f93f4c864e
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/history/the-history-interface/iframe_history_go_0.html
@@ -0,0 +1,40 @@
+
+
+  iframe_history_go_0
+  
+  
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/history/the-history-interface/joint_session_history/001-1.html b/testing/web-platform/tests/html/browsers/history/the-history-interface/joint_session_history/001-1.html
new file mode 100644
index 0000000000..9aa5d30d16
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/history/the-history-interface/joint_session_history/001-1.html
@@ -0,0 +1,72 @@
+
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/history/the-history-interface/joint_session_history/001.html b/testing/web-platform/tests/html/browsers/history/the-history-interface/joint_session_history/001.html
new file mode 100644
index 0000000000..c9d1c6416d
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/history/the-history-interface/joint_session_history/001.html
@@ -0,0 +1,18 @@
+
+Joint session history with single iframe
+
+
+

+
+
diff --git a/testing/web-platform/tests/html/browsers/history/the-history-interface/joint_session_history/002-1.html b/testing/web-platform/tests/html/browsers/history/the-history-interface/joint_session_history/002-1.html
new file mode 100644
index 0000000000..ed69d679da
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/history/the-history-interface/joint_session_history/002-1.html
@@ -0,0 +1,35 @@
+
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/history/the-history-interface/joint_session_history/002.html b/testing/web-platform/tests/html/browsers/history/the-history-interface/joint_session_history/002.html
new file mode 100644
index 0000000000..b08c19e52d
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/history/the-history-interface/joint_session_history/002.html
@@ -0,0 +1,18 @@
+
+Joint session history with single iframe
+
+
+

+
+
diff --git a/testing/web-platform/tests/html/browsers/history/the-history-interface/joint_session_history/filler.html b/testing/web-platform/tests/html/browsers/history/the-history-interface/joint_session_history/filler.html
new file mode 100644
index 0000000000..93e3c7ccfc
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/history/the-history-interface/joint_session_history/filler.html
@@ -0,0 +1,5 @@
+
+
diff --git a/testing/web-platform/tests/html/browsers/history/the-history-interface/non-automated/history.js b/testing/web-platform/tests/html/browsers/history/the-history-interface/non-automated/history.js
new file mode 100644
index 0000000000..bb5ee6dde0
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/history/the-history-interface/non-automated/history.js
@@ -0,0 +1,35 @@
+function parse_query() {
+    var query = location.search.slice(1);
+    var vars = query.split("&");
+    var fields = {};
+    vars.forEach(
+        function (x) {
+            var split = x.split("=");
+            return fields[split[0]] = split.slice(1).join("=");
+        });
+    return fields;
+}
+
+var query_parts = parse_query();
+var id = "id" in query_parts ? parseInt(query_parts.id) : 1;
+var urls_to_load = query_parts.urls.split(",");
+
+document.write(id);
+
+onunload = function() {};
+
+function queue_next() {
+    t = opener.t;
+    setTimeout(t.step_func(
+        function() {
+//            opener.assert_equals(history.length, id);
+            if (urls_to_load[0]) {
+                var next_page = urls_to_load[0];
+                (next_page.indexOf("?") > -1) ? (next_page += "&") : (next_page += "?");
+                next_page += "urls=" + urls_to_load.slice(1).join(",");
+                next_page += "&id=" + ++id;
+                location = next_page;
+            }
+        }
+    ), 100);
+}
diff --git a/testing/web-platform/tests/html/browsers/history/the-history-interface/non-automated/history_entry.html b/testing/web-platform/tests/html/browsers/history/the-history-interface/non-automated/history_entry.html
new file mode 100644
index 0000000000..e5929ddbe8
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/history/the-history-interface/non-automated/history_entry.html
@@ -0,0 +1,12 @@
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/history/the-history-interface/non-automated/traverse_the_history_unload_prompt_1-1.html b/testing/web-platform/tests/html/browsers/history/the-history-interface/non-automated/traverse_the_history_unload_prompt_1-1.html
new file mode 100644
index 0000000000..8c4401836a
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/history/the-history-interface/non-automated/traverse_the_history_unload_prompt_1-1.html
@@ -0,0 +1,18 @@
+
+
+
+
You should see/have seen a prompt asking if you want to leave the page.

+
Opt to stay on the page

+
diff --git a/testing/web-platform/tests/html/browsers/history/the-history-interface/non-automated/traverse_the_history_unload_prompt_1-manual.html b/testing/web-platform/tests/html/browsers/history/the-history-interface/non-automated/traverse_the_history_unload_prompt_1-manual.html
new file mode 100644
index 0000000000..587cdfb124
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/history/the-history-interface/non-automated/traverse_the_history_unload_prompt_1-manual.html
@@ -0,0 +1,31 @@
+
+Traversing the history, prompt in before unload, navigation denied
+
+
+

+
diff --git a/testing/web-platform/tests/html/browsers/history/the-history-interface/non-automated/traverse_the_history_unload_prompt_2-1.html b/testing/web-platform/tests/html/browsers/history/the-history-interface/non-automated/traverse_the_history_unload_prompt_2-1.html
new file mode 100644
index 0000000000..608a579e69
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/history/the-history-interface/non-automated/traverse_the_history_unload_prompt_2-1.html
@@ -0,0 +1,18 @@
+
+
+
+
You should see/have seen a prompt asking if you want to leave the page.

+
Opt to leave the page

+
If you weren't navigated away after opting to leave the page, that's a FAIL

diff --git a/testing/web-platform/tests/html/browsers/history/the-history-interface/non-automated/traverse_the_history_unload_prompt_2-manual.html b/testing/web-platform/tests/html/browsers/history/the-history-interface/non-automated/traverse_the_history_unload_prompt_2-manual.html
new file mode 100644
index 0000000000..94b66f8b55
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/history/the-history-interface/non-automated/traverse_the_history_unload_prompt_2-manual.html
@@ -0,0 +1,31 @@
+
+Traversing the history, prompt in before unload, navigation allowed
+
+
+

+
diff --git a/testing/web-platform/tests/html/browsers/history/the-history-interface/non-automated/traverse_the_session_history_unload_prompt_1-1.html b/testing/web-platform/tests/html/browsers/history/the-history-interface/non-automated/traverse_the_session_history_unload_prompt_1-1.html
new file mode 100644
index 0000000000..c0079b6bec
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/history/the-history-interface/non-automated/traverse_the_session_history_unload_prompt_1-1.html
@@ -0,0 +1,17 @@
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/history/the-history-interface/non-automated/traverse_the_session_history_unload_prompt_1-manual.html b/testing/web-platform/tests/html/browsers/history/the-history-interface/non-automated/traverse_the_session_history_unload_prompt_1-manual.html
new file mode 100644
index 0000000000..7f96a39240
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/history/the-history-interface/non-automated/traverse_the_session_history_unload_prompt_1-manual.html
@@ -0,0 +1,30 @@
+
+Traversing the history, unload event is fired on doucment
+
+
+

+
diff --git a/testing/web-platform/tests/html/browsers/history/the-history-interface/resources/message-opener.sub.html b/testing/web-platform/tests/html/browsers/history/the-history-interface/resources/message-opener.sub.html
new file mode 100644
index 0000000000..441c08c0ea
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/history/the-history-interface/resources/message-opener.sub.html
@@ -0,0 +1,8 @@
+
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/history/the-history-interface/resources/traverse-during-beforeunload.html b/testing/web-platform/tests/html/browsers/history/the-history-interface/resources/traverse-during-beforeunload.html
new file mode 100644
index 0000000000..53a4a1886e
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/history/the-history-interface/resources/traverse-during-beforeunload.html
@@ -0,0 +1,12 @@
+
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/history/the-history-interface/resources/traverse-during-unload.html b/testing/web-platform/tests/html/browsers/history/the-history-interface/resources/traverse-during-unload.html
new file mode 100644
index 0000000000..d5ffb7abae
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/history/the-history-interface/resources/traverse-during-unload.html
@@ -0,0 +1,12 @@
+
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/history/the-history-interface/resources/url-rewriting-helper.html b/testing/web-platform/tests/html/browsers/history/the-history-interface/resources/url-rewriting-helper.html
new file mode 100644
index 0000000000..847d16cd1a
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/history/the-history-interface/resources/url-rewriting-helper.html
@@ -0,0 +1,12 @@
+
+
diff --git a/testing/web-platform/tests/html/browsers/history/the-history-interface/traverse-during-beforeunload.html b/testing/web-platform/tests/html/browsers/history/the-history-interface/traverse-during-beforeunload.html
new file mode 100644
index 0000000000..cb8cdca7ff
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/history/the-history-interface/traverse-during-beforeunload.html
@@ -0,0 +1,28 @@
+
+
+Traversing the history during beforeunload
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/history/the-history-interface/traverse-during-unload.html b/testing/web-platform/tests/html/browsers/history/the-history-interface/traverse-during-unload.html
new file mode 100644
index 0000000000..6f6e984402
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/history/the-history-interface/traverse-during-unload.html
@@ -0,0 +1,28 @@
+
+
+Traversing the history during unload
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/history/the-history-interface/traverse_the_history_1-1.html b/testing/web-platform/tests/html/browsers/history/the-history-interface/traverse_the_history_1-1.html
new file mode 100644
index 0000000000..a11fcf2d2d
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/history/the-history-interface/traverse_the_history_1-1.html
@@ -0,0 +1,18 @@
+
+4
+
diff --git a/testing/web-platform/tests/html/browsers/history/the-history-interface/traverse_the_history_1.html b/testing/web-platform/tests/html/browsers/history/the-history-interface/traverse_the_history_1.html
new file mode 100644
index 0000000000..9b59bb0587
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/history/the-history-interface/traverse_the_history_1.html
@@ -0,0 +1,25 @@
+
+Multiple history traversals from the same task
+
+
+

+
diff --git a/testing/web-platform/tests/html/browsers/history/the-history-interface/traverse_the_history_2-1.html b/testing/web-platform/tests/html/browsers/history/the-history-interface/traverse_the_history_2-1.html
new file mode 100644
index 0000000000..64920b4f4f
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/history/the-history-interface/traverse_the_history_2-1.html
@@ -0,0 +1,17 @@
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/history/the-history-interface/traverse_the_history_2.html b/testing/web-platform/tests/html/browsers/history/the-history-interface/traverse_the_history_2.html
new file mode 100644
index 0000000000..1d10033808
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/history/the-history-interface/traverse_the_history_2.html
@@ -0,0 +1,28 @@
+
+Multiple history traversals, last would be aborted
+
+
+

+
diff --git a/testing/web-platform/tests/html/browsers/history/the-history-interface/traverse_the_history_3-1.html b/testing/web-platform/tests/html/browsers/history/the-history-interface/traverse_the_history_3-1.html
new file mode 100644
index 0000000000..c49bfd384a
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/history/the-history-interface/traverse_the_history_3-1.html
@@ -0,0 +1,17 @@
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/history/the-history-interface/traverse_the_history_3.html b/testing/web-platform/tests/html/browsers/history/the-history-interface/traverse_the_history_3.html
new file mode 100644
index 0000000000..1d10033808
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/history/the-history-interface/traverse_the_history_3.html
@@ -0,0 +1,28 @@
+
+Multiple history traversals, last would be aborted
+
+
+

+
diff --git a/testing/web-platform/tests/html/browsers/history/the-history-interface/traverse_the_history_4-1.html b/testing/web-platform/tests/html/browsers/history/the-history-interface/traverse_the_history_4-1.html
new file mode 100644
index 0000000000..cf7f72379a
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/history/the-history-interface/traverse_the_history_4-1.html
@@ -0,0 +1,17 @@
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/history/the-history-interface/traverse_the_history_4.html b/testing/web-platform/tests/html/browsers/history/the-history-interface/traverse_the_history_4.html
new file mode 100644
index 0000000000..2856bf8d73
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/history/the-history-interface/traverse_the_history_4.html
@@ -0,0 +1,28 @@
+
+Multiple history traversals, last would be aborted
+
+
+

+
diff --git a/testing/web-platform/tests/html/browsers/history/the-history-interface/traverse_the_history_5-1.html b/testing/web-platform/tests/html/browsers/history/the-history-interface/traverse_the_history_5-1.html
new file mode 100644
index 0000000000..a3f2553fa0
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/history/the-history-interface/traverse_the_history_5-1.html
@@ -0,0 +1,17 @@
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/history/the-history-interface/traverse_the_history_5.html b/testing/web-platform/tests/html/browsers/history/the-history-interface/traverse_the_history_5.html
new file mode 100644
index 0000000000..8725497b50
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/history/the-history-interface/traverse_the_history_5.html
@@ -0,0 +1,28 @@
+
+Multiple history traversals, last would be aborted
+
+
+

+
diff --git a/testing/web-platform/tests/html/browsers/history/the-history-interface/traverse_the_history_unload_1-1.html b/testing/web-platform/tests/html/browsers/history/the-history-interface/traverse_the_history_unload_1-1.html
new file mode 100644
index 0000000000..d3f3f6d5d0
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/history/the-history-interface/traverse_the_history_unload_1-1.html
@@ -0,0 +1,17 @@
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/history/the-history-interface/traverse_the_history_unload_1.html b/testing/web-platform/tests/html/browsers/history/the-history-interface/traverse_the_history_unload_1.html
new file mode 100644
index 0000000000..b8215b29f3
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/history/the-history-interface/traverse_the_history_unload_1.html
@@ -0,0 +1,30 @@
+
+Traversing the history, unload event is fired on doucment
+
+
+

+
diff --git a/testing/web-platform/tests/html/browsers/history/the-history-interface/traverse_the_history_write_after_load_1-1.html b/testing/web-platform/tests/html/browsers/history/the-history-interface/traverse_the_history_write_after_load_1-1.html
new file mode 100644
index 0000000000..945c8d81f8
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/history/the-history-interface/traverse_the_history_write_after_load_1-1.html
@@ -0,0 +1,12 @@
+
+2
+
diff --git a/testing/web-platform/tests/html/browsers/history/the-history-interface/traverse_the_history_write_after_load_1.html b/testing/web-platform/tests/html/browsers/history/the-history-interface/traverse_the_history_write_after_load_1.html
new file mode 100644
index 0000000000..404d61d0cf
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/history/the-history-interface/traverse_the_history_write_after_load_1.html
@@ -0,0 +1,29 @@
+
+Traverse the history after document.write after the load event
+
+
+

+
diff --git a/testing/web-platform/tests/html/browsers/history/the-history-interface/traverse_the_history_write_after_load_2-1.html b/testing/web-platform/tests/html/browsers/history/the-history-interface/traverse_the_history_write_after_load_2-1.html
new file mode 100644
index 0000000000..0e58cf573d
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/history/the-history-interface/traverse_the_history_write_after_load_2-1.html
@@ -0,0 +1,12 @@
+
+3
+
diff --git a/testing/web-platform/tests/html/browsers/history/the-history-interface/traverse_the_history_write_after_load_2.html b/testing/web-platform/tests/html/browsers/history/the-history-interface/traverse_the_history_write_after_load_2.html
new file mode 100644
index 0000000000..28e363f916
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/history/the-history-interface/traverse_the_history_write_after_load_2.html
@@ -0,0 +1,28 @@
+
+Traverse the history back and forward when a history entry is written after the load event
+
+
+

+
diff --git a/testing/web-platform/tests/html/browsers/history/the-history-interface/traverse_the_history_write_onload_1-1.html b/testing/web-platform/tests/html/browsers/history/the-history-interface/traverse_the_history_write_onload_1-1.html
new file mode 100644
index 0000000000..261955533d
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/history/the-history-interface/traverse_the_history_write_onload_1-1.html
@@ -0,0 +1,12 @@
+
+2
+
diff --git a/testing/web-platform/tests/html/browsers/history/the-history-interface/traverse_the_history_write_onload_1.html b/testing/web-platform/tests/html/browsers/history/the-history-interface/traverse_the_history_write_onload_1.html
new file mode 100644
index 0000000000..ff2729c3cf
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/history/the-history-interface/traverse_the_history_write_onload_1.html
@@ -0,0 +1,29 @@
+
+Traverse the history when a history entry is written in the load event
+
+
+

+
diff --git a/testing/web-platform/tests/html/browsers/history/the-history-interface/traverse_the_history_write_onload_2-1.html b/testing/web-platform/tests/html/browsers/history/the-history-interface/traverse_the_history_write_onload_2-1.html
new file mode 100644
index 0000000000..f32bee5e12
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/history/the-history-interface/traverse_the_history_write_onload_2-1.html
@@ -0,0 +1,12 @@
+
+3
+
diff --git a/testing/web-platform/tests/html/browsers/history/the-history-interface/traverse_the_history_write_onload_2.html b/testing/web-platform/tests/html/browsers/history/the-history-interface/traverse_the_history_write_onload_2.html
new file mode 100644
index 0000000000..bc29174b0d
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/history/the-history-interface/traverse_the_history_write_onload_2.html
@@ -0,0 +1,29 @@
+
+Traverse the history back and forward when a history entry is written in the load event
+
+
+

+
diff --git a/testing/web-platform/tests/html/browsers/history/the-location-interface/allow_prototype_cycle_through_location.sub.html b/testing/web-platform/tests/html/browsers/history/the-location-interface/allow_prototype_cycle_through_location.sub.html
new file mode 100644
index 0000000000..f72ed1eaf2
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/history/the-location-interface/allow_prototype_cycle_through_location.sub.html
@@ -0,0 +1,197 @@
+
+
+
+  
+
+  Location objects' custom [[GetPrototypeOf]] trap permit [[Prototype]] chain cycles to be created through them
+
+  
+  
+  
+
+  
+  
+
+
+

+
+

+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/history/the-location-interface/assign_after_load-1.html b/testing/web-platform/tests/html/browsers/history/the-location-interface/assign_after_load-1.html
new file mode 100644
index 0000000000..3d2b897221
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/history/the-location-interface/assign_after_load-1.html
@@ -0,0 +1,9 @@
+
+1
+
diff --git a/testing/web-platform/tests/html/browsers/history/the-location-interface/assign_after_load-2.html b/testing/web-platform/tests/html/browsers/history/the-location-interface/assign_after_load-2.html
new file mode 100644
index 0000000000..94679571be
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/history/the-location-interface/assign_after_load-2.html
@@ -0,0 +1,7 @@
+
+2
+
diff --git a/testing/web-platform/tests/html/browsers/history/the-location-interface/assign_after_load.html b/testing/web-platform/tests/html/browsers/history/the-location-interface/assign_after_load.html
new file mode 100644
index 0000000000..00dc931d4e
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/history/the-location-interface/assign_after_load.html
@@ -0,0 +1,23 @@
+
+Assignment to location after document is completely loaded
+
+
+

+
+
diff --git a/testing/web-platform/tests/html/browsers/history/the-location-interface/assign_before_load-1.html b/testing/web-platform/tests/html/browsers/history/the-location-interface/assign_before_load-1.html
new file mode 100644
index 0000000000..2549867c8f
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/history/the-location-interface/assign_before_load-1.html
@@ -0,0 +1,7 @@
+
+1
+
diff --git a/testing/web-platform/tests/html/browsers/history/the-location-interface/assign_before_load-2.html b/testing/web-platform/tests/html/browsers/history/the-location-interface/assign_before_load-2.html
new file mode 100644
index 0000000000..94679571be
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/history/the-location-interface/assign_before_load-2.html
@@ -0,0 +1,7 @@
+
+2
+
diff --git a/testing/web-platform/tests/html/browsers/history/the-location-interface/assign_before_load.html b/testing/web-platform/tests/html/browsers/history/the-location-interface/assign_before_load.html
new file mode 100644
index 0000000000..62a2aa7c60
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/history/the-location-interface/assign_before_load.html
@@ -0,0 +1,23 @@
+
+Assignment to location before document is completely loaded
+
+
+

+
+
diff --git a/testing/web-platform/tests/html/browsers/history/the-location-interface/cross_origin_joined_frame.sub.html b/testing/web-platform/tests/html/browsers/history/the-location-interface/cross_origin_joined_frame.sub.html
new file mode 100644
index 0000000000..a3ffdd005a
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/history/the-location-interface/cross_origin_joined_frame.sub.html
@@ -0,0 +1,15 @@
+
+
+
+  
+  Cross-origin subframe for Location cyclic [[Prototype]] test
+  
+
+
+
+
+
Cross-origin iframe with joined document.domain

+
+
diff --git a/testing/web-platform/tests/html/browsers/history/the-location-interface/document_location.html b/testing/web-platform/tests/html/browsers/history/the-location-interface/document_location.html
new file mode 100644
index 0000000000..3bdb028212
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/history/the-location-interface/document_location.html
@@ -0,0 +1,39 @@
+
+document.location
+
+
+

+
diff --git a/testing/web-platform/tests/html/browsers/history/the-location-interface/location-non-configurable-toString-valueOf.html b/testing/web-platform/tests/html/browsers/history/the-location-interface/location-non-configurable-toString-valueOf.html
new file mode 100644
index 0000000000..80760ac9e4
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/history/the-location-interface/location-non-configurable-toString-valueOf.html
@@ -0,0 +1,42 @@
+
+
+Same-origin Location objects have non-configurable "toString" and "valueOf" properties
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/history/the-location-interface/location-origin-idna.sub.window.js b/testing/web-platform/tests/html/browsers/history/the-location-interface/location-origin-idna.sub.window.js
new file mode 100644
index 0000000000..83b030f886
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/history/the-location-interface/location-origin-idna.sub.window.js
@@ -0,0 +1,11 @@
+async_test(t => {
+  const frame = document.createElement("iframe"),
+        asciiOrigin = location.protocol + "//{{domains[天気の良い日]}}:" + location.port,
+        path = new URL("resources/post-your-origin.html", location).pathname;
+  frame.src = asciiOrigin + path;
+  self.onmessage = t.step_func_done(e => {
+    assert_equals(e.data.origin, asciiOrigin);
+  });
+  document.body.appendChild(frame);
+  t.add_cleanup(() => frame.remove());
+}, "Test that location.origin returns ASCII");
diff --git a/testing/web-platform/tests/html/browsers/history/the-location-interface/location-pathname-setter-question-mark.html b/testing/web-platform/tests/html/browsers/history/the-location-interface/location-pathname-setter-question-mark.html
new file mode 100644
index 0000000000..09546020f7
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/history/the-location-interface/location-pathname-setter-question-mark.html
@@ -0,0 +1,16 @@
+
+Set location.pathname to ?
+
+
+

+
+
diff --git a/testing/web-platform/tests/html/browsers/history/the-location-interface/location-prevent-extensions.html b/testing/web-platform/tests/html/browsers/history/the-location-interface/location-prevent-extensions.html
new file mode 100644
index 0000000000..a8c777aded
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/history/the-location-interface/location-prevent-extensions.html
@@ -0,0 +1,21 @@
+
+
+[[PreventExtensions]] on a Location object should return false
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/history/the-location-interface/location-protocol-setter-non-broken-weird.html b/testing/web-platform/tests/html/browsers/history/the-location-interface/location-protocol-setter-non-broken-weird.html
new file mode 100644
index 0000000000..544eb4ad9a
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/history/the-location-interface/location-protocol-setter-non-broken-weird.html
@@ -0,0 +1,35 @@
+
+Set location.protocol from an HTTP URL
+
+
+
+

+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/history/the-location-interface/location-protocol-setter-non-broken.html b/testing/web-platform/tests/html/browsers/history/the-location-interface/location-protocol-setter-non-broken.html
new file mode 100644
index 0000000000..585016eae9
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/history/the-location-interface/location-protocol-setter-non-broken.html
@@ -0,0 +1,63 @@
+
+Set location.protocol to a non-broken-non-functioning scheme
+
+
+
+

+
diff --git a/testing/web-platform/tests/html/browsers/history/the-location-interface/location-protocol-setter-sameish.html b/testing/web-platform/tests/html/browsers/history/the-location-interface/location-protocol-setter-sameish.html
new file mode 100644
index 0000000000..c581ae35aa
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/history/the-location-interface/location-protocol-setter-sameish.html
@@ -0,0 +1,26 @@
+
+Set location.protocol to the scheme it already was
+
+
+

+
+
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/history/the-location-interface/location-protocol-setter-with-colon.sub.html b/testing/web-platform/tests/html/browsers/history/the-location-interface/location-protocol-setter-with-colon.sub.html
new file mode 100644
index 0000000000..0612b5c709
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/history/the-location-interface/location-protocol-setter-with-colon.sub.html
@@ -0,0 +1,52 @@
+
+
+
+
+
+

+
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/history/the-location-interface/location-protocol-setter.html b/testing/web-platform/tests/html/browsers/history/the-location-interface/location-protocol-setter.html
new file mode 100644
index 0000000000..3d051e8cfb
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/history/the-location-interface/location-protocol-setter.html
@@ -0,0 +1,104 @@
+
+Set location.protocol to schemes that throw
+
+
+

+
+
+
diff --git a/testing/web-platform/tests/html/browsers/history/the-location-interface/location-prototype-no-toString-valueOf.html b/testing/web-platform/tests/html/browsers/history/the-location-interface/location-prototype-no-toString-valueOf.html
new file mode 100644
index 0000000000..56316320af
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/history/the-location-interface/location-prototype-no-toString-valueOf.html
@@ -0,0 +1,55 @@
+
+
+Location.prototype objects don't have own "toString" and "valueOf" properties
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/history/the-location-interface/location-prototype-setting-cross-origin-domain.sub.html b/testing/web-platform/tests/html/browsers/history/the-location-interface/location-prototype-setting-cross-origin-domain.sub.html
new file mode 100644
index 0000000000..1e677b0365
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/history/the-location-interface/location-prototype-setting-cross-origin-domain.sub.html
@@ -0,0 +1,31 @@
+
+
+[[SetPrototypeOf]] on a Location object should not allow changing its value: cross-origin via document.domain
+
+
+
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/history/the-location-interface/location-prototype-setting-cross-origin.sub.html b/testing/web-platform/tests/html/browsers/history/the-location-interface/location-prototype-setting-cross-origin.sub.html
new file mode 100644
index 0000000000..7bb6a27e21
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/history/the-location-interface/location-prototype-setting-cross-origin.sub.html
@@ -0,0 +1,28 @@
+
+
+[[SetPrototypeOf]] on a Location object should not allow changing its value: cross-origin
+
+
+
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/history/the-location-interface/location-prototype-setting-goes-cross-origin-domain.sub.html b/testing/web-platform/tests/html/browsers/history/the-location-interface/location-prototype-setting-goes-cross-origin-domain.sub.html
new file mode 100644
index 0000000000..8966a814c5
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/history/the-location-interface/location-prototype-setting-goes-cross-origin-domain.sub.html
@@ -0,0 +1,39 @@
+
+
+[[SetPrototypeOf]] on a Location object should not allow changing its value: cross-origin via document.domain after initially getting the object
+
+
+
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/history/the-location-interface/location-prototype-setting-same-origin-domain.sub.html b/testing/web-platform/tests/html/browsers/history/the-location-interface/location-prototype-setting-same-origin-domain.sub.html
new file mode 100644
index 0000000000..8ec7585daa
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/history/the-location-interface/location-prototype-setting-same-origin-domain.sub.html
@@ -0,0 +1,30 @@
+
+
+[[SetPrototypeOf]] on a Location object should not allow changing its value: cross-origin, but same-origin-domain
+
+
+
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/history/the-location-interface/location-prototype-setting-same-origin.html b/testing/web-platform/tests/html/browsers/history/the-location-interface/location-prototype-setting-same-origin.html
new file mode 100644
index 0000000000..f912004f73
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/history/the-location-interface/location-prototype-setting-same-origin.html
@@ -0,0 +1,21 @@
+
+
+[[SetPrototypeOf]] on a location object should not allow changing its value: same-origin
+
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/history/the-location-interface/location-stringifier.html b/testing/web-platform/tests/html/browsers/history/the-location-interface/location-stringifier.html
new file mode 100644
index 0000000000..48bad7af0e
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/history/the-location-interface/location-stringifier.html
@@ -0,0 +1,24 @@
+
+Location stringifier
+
+
+
+
+
+

+
diff --git a/testing/web-platform/tests/html/browsers/history/the-location-interface/location-symbol-toprimitive.html b/testing/web-platform/tests/html/browsers/history/the-location-interface/location-symbol-toprimitive.html
new file mode 100644
index 0000000000..e666a3e703
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/history/the-location-interface/location-symbol-toprimitive.html
@@ -0,0 +1,14 @@
+
+Location Symbol.toPrimitive
+
+
+

+
diff --git a/testing/web-platform/tests/html/browsers/history/the-location-interface/location-tojson.html b/testing/web-platform/tests/html/browsers/history/the-location-interface/location-tojson.html
new file mode 100644
index 0000000000..5f20a6e15c
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/history/the-location-interface/location-tojson.html
@@ -0,0 +1,13 @@
+
+Location has no toJSON
+
+
+

+
+
diff --git a/testing/web-platform/tests/html/browsers/history/the-location-interface/location-valueof.html b/testing/web-platform/tests/html/browsers/history/the-location-interface/location-valueof.html
new file mode 100644
index 0000000000..978bbb63a0
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/history/the-location-interface/location-valueof.html
@@ -0,0 +1,15 @@
+
+Location valueOf
+
+
+

+
diff --git a/testing/web-platform/tests/html/browsers/history/the-location-interface/location_assign.html b/testing/web-platform/tests/html/browsers/history/the-location-interface/location_assign.html
new file mode 100644
index 0000000000..55f26d5660
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/history/the-location-interface/location_assign.html
@@ -0,0 +1,26 @@
+
+
+  
+    location_assign
+    
+    
+  
+  
+    

+    
+  
+
diff --git a/testing/web-platform/tests/html/browsers/history/the-location-interface/location_assign_about_blank-1.html b/testing/web-platform/tests/html/browsers/history/the-location-interface/location_assign_about_blank-1.html
new file mode 100644
index 0000000000..b43598f2cd
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/history/the-location-interface/location_assign_about_blank-1.html
@@ -0,0 +1,2 @@
+
+Filler text
diff --git a/testing/web-platform/tests/html/browsers/history/the-location-interface/location_assign_about_blank.html b/testing/web-platform/tests/html/browsers/history/the-location-interface/location_assign_about_blank.html
new file mode 100644
index 0000000000..f3f7cf26b8
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/history/the-location-interface/location_assign_about_blank.html
@@ -0,0 +1,24 @@
+
+location.assign with initial about:blank browsing context
+
+
+

+
+
+
diff --git a/testing/web-platform/tests/html/browsers/history/the-location-interface/location_hash.html b/testing/web-platform/tests/html/browsers/history/the-location-interface/location_hash.html
new file mode 100644
index 0000000000..c063e285ea
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/history/the-location-interface/location_hash.html
@@ -0,0 +1,62 @@
+
+
+  
+    location_hash
+    
+    
+  
+  
+    

+    
+    
+  
+
diff --git a/testing/web-platform/tests/html/browsers/history/the-location-interface/location_host.html b/testing/web-platform/tests/html/browsers/history/the-location-interface/location_host.html
new file mode 100644
index 0000000000..d93bf47e50
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/history/the-location-interface/location_host.html
@@ -0,0 +1,28 @@
+
+
+  
+    location_host
+    
+    
+  
+  
+    

+    
+ 
+
diff --git a/testing/web-platform/tests/html/browsers/history/the-location-interface/location_hostname.html b/testing/web-platform/tests/html/browsers/history/the-location-interface/location_hostname.html
new file mode 100644
index 0000000000..2ffa0e5fc8
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/history/the-location-interface/location_hostname.html
@@ -0,0 +1,33 @@
+
+
+  
+    location_hostname
+    
+    
+  
+  
+    

+    
+  
+
diff --git a/testing/web-platform/tests/html/browsers/history/the-location-interface/location_href.html b/testing/web-platform/tests/html/browsers/history/the-location-interface/location_href.html
new file mode 100644
index 0000000000..1aa85dcdc8
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/history/the-location-interface/location_href.html
@@ -0,0 +1,19 @@
+
+
+  
+    location_href
+    
+    
+  
+  
+    

+    
+  
+
diff --git a/testing/web-platform/tests/html/browsers/history/the-location-interface/location_origin.html b/testing/web-platform/tests/html/browsers/history/the-location-interface/location_origin.html
new file mode 100644
index 0000000000..2325f4018a
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/history/the-location-interface/location_origin.html
@@ -0,0 +1,14 @@
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/history/the-location-interface/location_pathname.html b/testing/web-platform/tests/html/browsers/history/the-location-interface/location_pathname.html
new file mode 100644
index 0000000000..dea05d2f37
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/history/the-location-interface/location_pathname.html
@@ -0,0 +1,22 @@
+
+
+  
+    location_pathname
+    
+    
+  
+  
+    

+    
+  
+
diff --git a/testing/web-platform/tests/html/browsers/history/the-location-interface/location_port.html b/testing/web-platform/tests/html/browsers/history/the-location-interface/location_port.html
new file mode 100644
index 0000000000..fa1308ca5d
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/history/the-location-interface/location_port.html
@@ -0,0 +1,31 @@
+
+
+  
+    location_port
+    
+    
+  
+  
+    

+    
+  
+
diff --git a/testing/web-platform/tests/html/browsers/history/the-location-interface/location_protocol.html b/testing/web-platform/tests/html/browsers/history/the-location-interface/location_protocol.html
new file mode 100644
index 0000000000..d28bd56393
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/history/the-location-interface/location_protocol.html
@@ -0,0 +1,25 @@
+
+
+  
+    location_protocol
+    
+    
+  
+  
+    

+    
+  
+
diff --git a/testing/web-platform/tests/html/browsers/history/the-location-interface/location_reload-iframe.html b/testing/web-platform/tests/html/browsers/history/the-location-interface/location_reload-iframe.html
new file mode 100644
index 0000000000..f08cf5de3e
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/history/the-location-interface/location_reload-iframe.html
@@ -0,0 +1,4 @@
+
diff --git a/testing/web-platform/tests/html/browsers/history/the-location-interface/location_reload.html b/testing/web-platform/tests/html/browsers/history/the-location-interface/location_reload.html
new file mode 100644
index 0000000000..0a2d21d8d2
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/history/the-location-interface/location_reload.html
@@ -0,0 +1,43 @@
+
+
+  
+    location_reload
+    
+    
+  
+  
+    

+
+    
+
+    
+
+  
+
diff --git a/testing/web-platform/tests/html/browsers/history/the-location-interface/location_reload_javascript_url.html b/testing/web-platform/tests/html/browsers/history/the-location-interface/location_reload_javascript_url.html
new file mode 100644
index 0000000000..737cafbcd3
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/history/the-location-interface/location_reload_javascript_url.html
@@ -0,0 +1,60 @@
+
+
+  
+    location_reload_javascript_url
+    
+    
+  
+  
+    

+
+    
+
+    
+
+  
+
diff --git a/testing/web-platform/tests/html/browsers/history/the-location-interface/location_replace.html b/testing/web-platform/tests/html/browsers/history/the-location-interface/location_replace.html
new file mode 100644
index 0000000000..0593420d40
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/history/the-location-interface/location_replace.html
@@ -0,0 +1,26 @@
+
+
+  
+    location_replace
+    
+    
+  
+  
+    

+    
+  
+
diff --git a/testing/web-platform/tests/html/browsers/history/the-location-interface/location_search.html b/testing/web-platform/tests/html/browsers/history/the-location-interface/location_search.html
new file mode 100644
index 0000000000..f9db757841
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/history/the-location-interface/location_search.html
@@ -0,0 +1,20 @@
+
+
+  
+    location_search
+    
+    
+  
+  
+    

+    
+  
+
diff --git a/testing/web-platform/tests/html/browsers/history/the-location-interface/no-browsing-context.window.js b/testing/web-platform/tests/html/browsers/history/the-location-interface/no-browsing-context.window.js
new file mode 100644
index 0000000000..4077d90971
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/history/the-location-interface/no-browsing-context.window.js
@@ -0,0 +1,86 @@
+test(() => {
+  const frame = document.body.appendChild(document.createElement("iframe")),
+        win = frame.contentWindow,
+        loc = win.location;
+  frame.remove();
+  assert_equals(win.location, loc);
+}, "Window and Location are 1:1 after browsing context removal");
+
+function bcLessLocation() {
+  const frame = document.body.appendChild(document.createElement("iframe")),
+        win = frame.contentWindow,
+        loc = win.location;
+  frame.remove();
+  return loc;
+}
+
+[
+  {
+    "property": "href",
+    "expected": "about:blank",
+    "values": ["https://example.com/", "/", "http://test:test/", "test test", "test:test", "chrome:fail"]
+  },
+  {
+    "property": "protocol",
+    "expected": "about:",
+    "values": ["http", "about", "test"]
+  },
+  {
+    "property": "host",
+    "expected": "",
+    "values": ["example.com", "test test", "()"]
+  },
+  {
+    "property": "hostname",
+    "expected": "",
+    "values": ["example.com"]
+  },
+  {
+    "property": "port",
+    "expected": "",
+    "values": ["80", "", "443", "notaport"]
+  },
+  {
+    "property": "pathname",
+    "expected": "blank",
+    "values": ["/", "x"]
+  },
+  {
+    "property": "search",
+    "expected": "",
+    "values": ["test"]
+  },
+  {
+    "property": "hash",
+    "expected": "",
+    "values": ["test", "#"]
+  }
+].forEach(testSetup => {
+  testSetup.values.forEach(value => {
+  	test(() => {
+  	  const loc = bcLessLocation();
+  	  loc[testSetup.property] = value;
+  	  assert_equals(loc[testSetup.property], testSetup.expected);
+  	}, "Setting `" + testSetup.property + "` to `" + value + "` of a `Location` object sans browsing context is a no-op");
+  });
+});
+
+test(() => {
+  const loc = bcLessLocation();
+  assert_equals(loc.origin, "null");
+}, "Getting `origin` of a `Location` object sans browsing context should be \"null\"");
+
+["assign", "replace", "reload"].forEach(method => {
+  ["about:blank", "https://example.com/", "/", "http://test:test/", "test test", "test:test", "chrome:fail"].forEach(value => {
+    test(() => {
+      const loc = bcLessLocation();
+      loc[method](value);
+      assert_equals(loc.href, "about:blank");
+    }, "Invoking `" + method + "` with `" + value + "` on a `Location` object sans browsing context is a no-op");
+  });
+});
+
+test(() => {
+  const loc = bcLessLocation();
+  assert_array_equals(loc.ancestorOrigins, []);
+}, "Getting `ancestorOrigins` of a `Location` object sans browsing context should be []");
diff --git a/testing/web-platform/tests/html/browsers/history/the-location-interface/non-automated/manual_click_assign_during_load-1.html b/testing/web-platform/tests/html/browsers/history/the-location-interface/non-automated/manual_click_assign_during_load-1.html
new file mode 100644
index 0000000000..c762ece3bc
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/history/the-location-interface/non-automated/manual_click_assign_during_load-1.html
@@ -0,0 +1,7 @@
+
+
+Click Here
+
Filler image to keep the page loading:

+
diff --git a/testing/web-platform/tests/html/browsers/history/the-location-interface/non-automated/manual_click_assign_during_load-2.html b/testing/web-platform/tests/html/browsers/history/the-location-interface/non-automated/manual_click_assign_during_load-2.html
new file mode 100644
index 0000000000..1bf7f41e00
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/history/the-location-interface/non-automated/manual_click_assign_during_load-2.html
@@ -0,0 +1,7 @@
+
+
This window should close itself and the test result appear in the original window
+
diff --git a/testing/web-platform/tests/html/browsers/history/the-location-interface/non-automated/manual_click_assign_during_load-manual.html b/testing/web-platform/tests/html/browsers/history/the-location-interface/non-automated/manual_click_assign_during_load-manual.html
new file mode 100644
index 0000000000..45a0e3e2fd
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/history/the-location-interface/non-automated/manual_click_assign_during_load-manual.html
@@ -0,0 +1,17 @@
+
+Assignment to location with click during load
+
+
+
The popup blocker must be disabled for this test

+

+
diff --git a/testing/web-platform/tests/html/browsers/history/the-location-interface/non-automated/manual_click_location_replace_during_load-1.html b/testing/web-platform/tests/html/browsers/history/the-location-interface/non-automated/manual_click_location_replace_during_load-1.html
new file mode 100644
index 0000000000..e9d03e9364
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/history/the-location-interface/non-automated/manual_click_location_replace_during_load-1.html
@@ -0,0 +1,10 @@
+
+
+Click Here
+
Filler image to keep the page loading:

+
+
diff --git a/testing/web-platform/tests/html/browsers/history/the-location-interface/non-automated/manual_click_location_replace_during_load-2.html b/testing/web-platform/tests/html/browsers/history/the-location-interface/non-automated/manual_click_location_replace_during_load-2.html
new file mode 100644
index 0000000000..1bf7f41e00
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/history/the-location-interface/non-automated/manual_click_location_replace_during_load-2.html
@@ -0,0 +1,7 @@
+
+
This window should close itself and the test result appear in the original window
+
diff --git a/testing/web-platform/tests/html/browsers/history/the-location-interface/non-automated/manual_click_location_replace_during_load-manual.html b/testing/web-platform/tests/html/browsers/history/the-location-interface/non-automated/manual_click_location_replace_during_load-manual.html
new file mode 100644
index 0000000000..a453de34bf
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/history/the-location-interface/non-automated/manual_click_location_replace_during_load-manual.html
@@ -0,0 +1,17 @@
+
+location.replace with click during load
+
+
+
The popup blocker must be disabled for this test

+

+
diff --git a/testing/web-platform/tests/html/browsers/history/the-location-interface/non-automated/manual_click_replace_during_load-manual.html b/testing/web-platform/tests/html/browsers/history/the-location-interface/non-automated/manual_click_replace_during_load-manual.html
new file mode 100644
index 0000000000..482858bcd7
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/history/the-location-interface/non-automated/manual_click_replace_during_load-manual.html
@@ -0,0 +1,17 @@
+
+Assignment to location with click during load
+
+
+
The popup blocker must be disabled for this test

+

+
diff --git a/testing/web-platform/tests/html/browsers/history/the-location-interface/non-automated/manual_form_submit_assign_during_load-1.html b/testing/web-platform/tests/html/browsers/history/the-location-interface/non-automated/manual_form_submit_assign_during_load-1.html
new file mode 100644
index 0000000000..08f7e2dd68
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/history/the-location-interface/non-automated/manual_form_submit_assign_during_load-1.html
@@ -0,0 +1,9 @@
+
+
+

+
+

+
Filler image to keep the page loading:

+
diff --git a/testing/web-platform/tests/html/browsers/history/the-location-interface/non-automated/manual_form_submit_assign_during_load-2.html b/testing/web-platform/tests/html/browsers/history/the-location-interface/non-automated/manual_form_submit_assign_during_load-2.html
new file mode 100644
index 0000000000..1bf7f41e00
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/history/the-location-interface/non-automated/manual_form_submit_assign_during_load-2.html
@@ -0,0 +1,7 @@
+
+
This window should close itself and the test result appear in the original window
+
diff --git a/testing/web-platform/tests/html/browsers/history/the-location-interface/non-automated/manual_form_submit_assign_during_load-manual.html b/testing/web-platform/tests/html/browsers/history/the-location-interface/non-automated/manual_form_submit_assign_during_load-manual.html
new file mode 100644
index 0000000000..d71b206ac5
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/history/the-location-interface/non-automated/manual_form_submit_assign_during_load-manual.html
@@ -0,0 +1,17 @@
+
+Assignment to location with form submit during load
+
+
+
The popup blocker must be disabled for this test

+

+
diff --git a/testing/web-platform/tests/html/browsers/history/the-location-interface/non-automated/reload_in_resize-1.html b/testing/web-platform/tests/html/browsers/history/the-location-interface/non-automated/reload_in_resize-1.html
new file mode 100644
index 0000000000..05b44f4c40
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/history/the-location-interface/non-automated/reload_in_resize-1.html
@@ -0,0 +1,15 @@
+
+
Resize this window. FAIL if the window doesn't close shortly afterwards.

+
diff --git a/testing/web-platform/tests/html/browsers/history/the-location-interface/non-automated/reload_in_resize-manual.html b/testing/web-platform/tests/html/browsers/history/the-location-interface/non-automated/reload_in_resize-manual.html
new file mode 100644
index 0000000000..5cb3fac964
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/history/the-location-interface/non-automated/reload_in_resize-manual.html
@@ -0,0 +1,26 @@
+
+Reload called from resize event
+
+
+
Resize the popup window. That window should then close and the result be presented here. If that window doesn't close after resize that's a FAIL.

+

+
+
diff --git a/testing/web-platform/tests/html/browsers/history/the-location-interface/per-global.window.js b/testing/web-platform/tests/html/browsers/history/the-location-interface/per-global.window.js
new file mode 100644
index 0000000000..b2956fd21f
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/history/the-location-interface/per-global.window.js
@@ -0,0 +1,3 @@
+// META: script=/common/object-association.js
+
+testIsPerWindow("location");
diff --git a/testing/web-platform/tests/html/browsers/history/the-location-interface/reload_document_open_write-1.html b/testing/web-platform/tests/html/browsers/history/the-location-interface/reload_document_open_write-1.html
new file mode 100644
index 0000000000..e1a2e811c9
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/history/the-location-interface/reload_document_open_write-1.html
@@ -0,0 +1,19 @@
+
+1
+
diff --git a/testing/web-platform/tests/html/browsers/history/the-location-interface/reload_document_open_write.html b/testing/web-platform/tests/html/browsers/history/the-location-interface/reload_document_open_write.html
new file mode 100644
index 0000000000..905ef88743
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/history/the-location-interface/reload_document_open_write.html
@@ -0,0 +1,26 @@
+
+Reload document with document.open and document.written content
+
+
+

+
+
diff --git a/testing/web-platform/tests/html/browsers/history/the-location-interface/reload_document_write-1.html b/testing/web-platform/tests/html/browsers/history/the-location-interface/reload_document_write-1.html
new file mode 100644
index 0000000000..9a08433920
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/history/the-location-interface/reload_document_write-1.html
@@ -0,0 +1,4 @@
+
diff --git a/testing/web-platform/tests/html/browsers/history/the-location-interface/reload_document_write.html b/testing/web-platform/tests/html/browsers/history/the-location-interface/reload_document_write.html
new file mode 100644
index 0000000000..fb5fddc7da
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/history/the-location-interface/reload_document_write.html
@@ -0,0 +1,21 @@
+
+Reload document with document.written content
+
+
+

+
+
diff --git a/testing/web-platform/tests/html/browsers/history/the-location-interface/reload_document_write_onload-1.html b/testing/web-platform/tests/html/browsers/history/the-location-interface/reload_document_write_onload-1.html
new file mode 100644
index 0000000000..36445af3c8
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/history/the-location-interface/reload_document_write_onload-1.html
@@ -0,0 +1,9 @@
+
diff --git a/testing/web-platform/tests/html/browsers/history/the-location-interface/reload_document_write_onload.html b/testing/web-platform/tests/html/browsers/history/the-location-interface/reload_document_write_onload.html
new file mode 100644
index 0000000000..b2cf31147a
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/history/the-location-interface/reload_document_write_onload.html
@@ -0,0 +1,26 @@
+
+Reload document with document.written content written in load event
+
+
+

+
+
diff --git a/testing/web-platform/tests/html/browsers/history/the-location-interface/reload_post_1-manual.html b/testing/web-platform/tests/html/browsers/history/the-location-interface/reload_post_1-manual.html
new file mode 100644
index 0000000000..95ef660559
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/history/the-location-interface/reload_post_1-manual.html
@@ -0,0 +1,27 @@
+
+Reload document with POST
+
+
+

+
diff --git a/testing/web-platform/tests/html/browsers/history/the-location-interface/resources/post-your-origin.html b/testing/web-platform/tests/html/browsers/history/the-location-interface/resources/post-your-origin.html
new file mode 100644
index 0000000000..a8a614c182
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/history/the-location-interface/resources/post-your-origin.html
@@ -0,0 +1,3 @@
+
\ No newline at end of file
diff --git a/testing/web-platform/tests/html/browsers/history/the-location-interface/resources/post-your-protocol.html b/testing/web-platform/tests/html/browsers/history/the-location-interface/resources/post-your-protocol.html
new file mode 100644
index 0000000000..c50d623893
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/history/the-location-interface/resources/post-your-protocol.html
@@ -0,0 +1,4 @@
+
diff --git a/testing/web-platform/tests/html/browsers/history/the-location-interface/resources/reload_post_1-1.py b/testing/web-platform/tests/html/browsers/history/the-location-interface/resources/reload_post_1-1.py
new file mode 100644
index 0000000000..56397f07b4
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/history/the-location-interface/resources/reload_post_1-1.py
@@ -0,0 +1,13 @@
+def main(request, response):
+    headers = [(b"Content-Type", b"text/html")]
+    return headers, u'''
+        
+        

+            
+            
+        

+        
+    '''
diff --git a/testing/web-platform/tests/html/browsers/history/the-location-interface/same-hash.html b/testing/web-platform/tests/html/browsers/history/the-location-interface/same-hash.html
new file mode 100644
index 0000000000..430a57662a
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/history/the-location-interface/same-hash.html
@@ -0,0 +1,101 @@
+
+
+Using the location interface to navigate to the same hash as the current one
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/history/the-location-interface/same_origin_frame.html b/testing/web-platform/tests/html/browsers/history/the-location-interface/same_origin_frame.html
new file mode 100644
index 0000000000..953e696b2a
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/history/the-location-interface/same_origin_frame.html
@@ -0,0 +1,12 @@
+
+
+
+  
+  Same-origin subframe for Location cyclic [[Prototype]] test
+  
+
+
+
+
Same-origin iframe

+
+
diff --git a/testing/web-platform/tests/html/browsers/history/the-location-interface/scripted_click_assign_during_load-1.html b/testing/web-platform/tests/html/browsers/history/the-location-interface/scripted_click_assign_during_load-1.html
new file mode 100644
index 0000000000..9561cabdd1
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/history/the-location-interface/scripted_click_assign_during_load-1.html
@@ -0,0 +1,10 @@
+
+
+Click Here
+
+
Filler image to keep the page loading:

+
diff --git a/testing/web-platform/tests/html/browsers/history/the-location-interface/scripted_click_assign_during_load-2.html b/testing/web-platform/tests/html/browsers/history/the-location-interface/scripted_click_assign_during_load-2.html
new file mode 100644
index 0000000000..1bf7f41e00
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/history/the-location-interface/scripted_click_assign_during_load-2.html
@@ -0,0 +1,7 @@
+
+
This window should close itself and the test result appear in the original window
+
diff --git a/testing/web-platform/tests/html/browsers/history/the-location-interface/scripted_click_assign_during_load.html b/testing/web-platform/tests/html/browsers/history/the-location-interface/scripted_click_assign_during_load.html
new file mode 100644
index 0000000000..7ccc6cdc09
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/history/the-location-interface/scripted_click_assign_during_load.html
@@ -0,0 +1,17 @@
+
+Assignment to location with click during load
+
+
+
The popup blocker must be disabled for this test

+

+
diff --git a/testing/web-platform/tests/html/browsers/history/the-location-interface/scripted_click_location_assign_during_load-1.html b/testing/web-platform/tests/html/browsers/history/the-location-interface/scripted_click_location_assign_during_load-1.html
new file mode 100644
index 0000000000..05bb42f967
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/history/the-location-interface/scripted_click_location_assign_during_load-1.html
@@ -0,0 +1,13 @@
+
+
+Click Here
+
+
Filler image to keep the page loading:

+
+
diff --git a/testing/web-platform/tests/html/browsers/history/the-location-interface/scripted_click_location_assign_during_load-2.html b/testing/web-platform/tests/html/browsers/history/the-location-interface/scripted_click_location_assign_during_load-2.html
new file mode 100644
index 0000000000..1bf7f41e00
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/history/the-location-interface/scripted_click_location_assign_during_load-2.html
@@ -0,0 +1,7 @@
+
+
This window should close itself and the test result appear in the original window
+
diff --git a/testing/web-platform/tests/html/browsers/history/the-location-interface/scripted_click_location_assign_during_load.html b/testing/web-platform/tests/html/browsers/history/the-location-interface/scripted_click_location_assign_during_load.html
new file mode 100644
index 0000000000..64f3ff942f
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/history/the-location-interface/scripted_click_location_assign_during_load.html
@@ -0,0 +1,16 @@
+
+location.assign with click during load
+
+
+
The popup blocker must be disabled for this test

+

+
diff --git a/testing/web-platform/tests/html/browsers/history/the-location-interface/scripted_form_submit_assign_during_load-1.html b/testing/web-platform/tests/html/browsers/history/the-location-interface/scripted_form_submit_assign_during_load-1.html
new file mode 100644
index 0000000000..ae07ac5cfc
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/history/the-location-interface/scripted_form_submit_assign_during_load-1.html
@@ -0,0 +1,12 @@
+
+
+

+
+

+
+
Filler image to keep the page loading:

+
diff --git a/testing/web-platform/tests/html/browsers/history/the-location-interface/scripted_form_submit_assign_during_load-2.html b/testing/web-platform/tests/html/browsers/history/the-location-interface/scripted_form_submit_assign_during_load-2.html
new file mode 100644
index 0000000000..1bf7f41e00
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/history/the-location-interface/scripted_form_submit_assign_during_load-2.html
@@ -0,0 +1,7 @@
+
+
This window should close itself and the test result appear in the original window
+
diff --git a/testing/web-platform/tests/html/browsers/history/the-location-interface/scripted_form_submit_assign_during_load.html b/testing/web-platform/tests/html/browsers/history/the-location-interface/scripted_form_submit_assign_during_load.html
new file mode 100644
index 0000000000..2a6eba63ab
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/history/the-location-interface/scripted_form_submit_assign_during_load.html
@@ -0,0 +1,17 @@
+
+Assignment to location with form submit during load
+
+
+
The popup blocker must be disabled for this test

+

+
diff --git a/testing/web-platform/tests/html/browsers/history/the-location-interface/security_location_0.htm b/testing/web-platform/tests/html/browsers/history/the-location-interface/security_location_0.htm
new file mode 100644
index 0000000000..f509c23b18
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/history/the-location-interface/security_location_0.htm
@@ -0,0 +1,27 @@
+
+
+  
+    Location interface Security
+    
+    
+    
+    
+    
+  
+  
+    
Access location object from different origins doesn't raise SECURITY_ERR exception

+    

+    
+    
+    
+    
+  
+
diff --git a/testing/web-platform/tests/html/browsers/history/the-session-history-of-browsing-contexts/navigation-in-onload.html b/testing/web-platform/tests/html/browsers/history/the-session-history-of-browsing-contexts/navigation-in-onload.html
new file mode 100644
index 0000000000..367d7eea3e
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/history/the-session-history-of-browsing-contexts/navigation-in-onload.html
@@ -0,0 +1,37 @@
+
+
+
+Navigation in onload handler
+
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/history/the-session-history-of-browsing-contexts/navigation-in-onload_form-submission-1.html b/testing/web-platform/tests/html/browsers/history/the-session-history-of-browsing-contexts/navigation-in-onload_form-submission-1.html
new file mode 100644
index 0000000000..2079224467
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/history/the-session-history-of-browsing-contexts/navigation-in-onload_form-submission-1.html
@@ -0,0 +1,15 @@
+
+
+  
+    
+    Navigation in onload handler through form submission
+    
+  
+  
+    

+  
+
diff --git a/testing/web-platform/tests/html/browsers/history/the-session-history-of-browsing-contexts/navigation-in-onload_form-submission-2.html b/testing/web-platform/tests/html/browsers/history/the-session-history-of-browsing-contexts/navigation-in-onload_form-submission-2.html
new file mode 100644
index 0000000000..11fbe2a2ba
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/history/the-session-history-of-browsing-contexts/navigation-in-onload_form-submission-2.html
@@ -0,0 +1,22 @@
+
+
+  
+    
+    Navigation in onload handler through form submission
+    
+  
+  
+  
+
diff --git a/testing/web-platform/tests/html/browsers/history/the-session-history-of-browsing-contexts/navigation-in-onload_form-submission-dynamic-iframe.html b/testing/web-platform/tests/html/browsers/history/the-session-history-of-browsing-contexts/navigation-in-onload_form-submission-dynamic-iframe.html
new file mode 100644
index 0000000000..aabae3d770
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/history/the-session-history-of-browsing-contexts/navigation-in-onload_form-submission-dynamic-iframe.html
@@ -0,0 +1,16 @@
+
+
+  
+    
+    Navigation in onload handler through form submission in a dynamically created iframe
+    
+  
+  
+  
+
diff --git a/testing/web-platform/tests/html/browsers/history/the-session-history-of-browsing-contexts/navigation-in-onload_form-submission-iframe.html b/testing/web-platform/tests/html/browsers/history/the-session-history-of-browsing-contexts/navigation-in-onload_form-submission-iframe.html
new file mode 100644
index 0000000000..5fa786d1f5
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/history/the-session-history-of-browsing-contexts/navigation-in-onload_form-submission-iframe.html
@@ -0,0 +1,10 @@
+
+
+  
+    
+    Navigation in onload handler through form submission in an iframe
+  
+  
+    
+  
+
diff --git a/testing/web-platform/tests/html/browsers/offline/application-cache-api/api_status_checking-manual.html b/testing/web-platform/tests/html/browsers/offline/application-cache-api/api_status_checking-manual.html
new file mode 100644
index 0000000000..a4a3b41a7d
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/offline/application-cache-api/api_status_checking-manual.html
@@ -0,0 +1,23 @@
+
+
+  
+    Offline Application Cache - API_status_CHECKING
+    
+    
+  
+  
+    
    
+      
  1. Refresh the page.
    2. 
+    

+
+    

+    
+  
+
diff --git a/testing/web-platform/tests/html/browsers/offline/application-cache-api/api_status_downloading-manual.html b/testing/web-platform/tests/html/browsers/offline/application-cache-api/api_status_downloading-manual.html
new file mode 100644
index 0000000000..c09d11d787
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/offline/application-cache-api/api_status_downloading-manual.html
@@ -0,0 +1,24 @@
+
+
+  
+    Offline Application Cache - API_status_DOWNLOADING
+    
+    
+  
+  
+    
    
+      
  1. Modify the commented part in the manifest file (manifest/clock.manifest) on the server.
    2. 
+      
  2. Refresh the page.
    3. 
+    

+    

+
+    
+  
+
diff --git a/testing/web-platform/tests/html/browsers/offline/application-cache-api/api_status_obsolete-manual.html b/testing/web-platform/tests/html/browsers/offline/application-cache-api/api_status_obsolete-manual.html
new file mode 100644
index 0000000000..77005644a2
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/offline/application-cache-api/api_status_obsolete-manual.html
@@ -0,0 +1,24 @@
+
+
+  
+    Offline Application Cache - API_status_OBSOLETE
+    
+    
+  
+  
+    
    
+      
  1. Remove the manifest file (manifest/clock.manifest) from the server.
    2. 
+      
  2. Refresh the page.
    3. 
+    

+    

+
+    
+  
+
diff --git a/testing/web-platform/tests/html/browsers/offline/application-cache-api/api_status_updateready-manual.html b/testing/web-platform/tests/html/browsers/offline/application-cache-api/api_status_updateready-manual.html
new file mode 100644
index 0000000000..7e1533374b
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/offline/application-cache-api/api_status_updateready-manual.html
@@ -0,0 +1,25 @@
+
+
+  
+    Offline Application Cache - API_status_UPDATEREADY
+    
+    
+  
+  
+    
    
+      
  1. Modify the commented part in the manifest file (manifest/clock.manifest) on the server.
    2. 
+      
  2. Refresh the page.
    3. 
+    

+
+    

+
+    
+  
+
diff --git a/testing/web-platform/tests/html/browsers/offline/application-cache-api/api_swapcache-manual.html b/testing/web-platform/tests/html/browsers/offline/application-cache-api/api_swapcache-manual.html
new file mode 100644
index 0000000000..6649d980f6
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/offline/application-cache-api/api_swapcache-manual.html
@@ -0,0 +1,30 @@
+
+
+  
+    Offline Application Cache - API_swapCache
+    
+    
+  
+  
+    
    
+      
  1. Modify the part of comment in manifest file of server.
    2. 
+      
  2. Refresh the page.
    3. 
+    

+
+    

+
+    
+  
+
diff --git a/testing/web-platform/tests/html/browsers/offline/browser-state/navigator_online_event-manual.https.html b/testing/web-platform/tests/html/browsers/offline/browser-state/navigator_online_event-manual.https.html
new file mode 100644
index 0000000000..81cad4f4fe
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/offline/browser-state/navigator_online_event-manual.https.html
@@ -0,0 +1,46 @@
+
+
+ 
+  Offline Application Cache
+  
+ 
+ 
+  
navigator_online_event

+
+  
    
+  
  1. Change the 'work offline' mode.
    2. 
+  
  2. If actual result and expected result are same, then test is Pass, otherwise Fail.
    3. 
+  

+
+  

+
+  
Actual Result

+  

+    
+  

+
+  
Expected Result

+  

+    apply 'work offline': offline event is raised.
release 'work offline': online event is raised.
+  

+  
+ 
+
diff --git a/testing/web-platform/tests/html/browsers/offline/browser-state/navigator_online_online.https.html b/testing/web-platform/tests/html/browsers/offline/browser-state/navigator_online_online.https.html
new file mode 100644
index 0000000000..81547c3fb9
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/offline/browser-state/navigator_online_online.https.html
@@ -0,0 +1,17 @@
+
+
+  
+    Offline Application Cache - navigator_online_online
+    
+    
+  
+  
+    

+
+    
+  
+
diff --git a/testing/web-platform/tests/html/browsers/offline/changestonetworkingmodel/original-id.json b/testing/web-platform/tests/html/browsers/offline/changestonetworkingmodel/original-id.json
new file mode 100644
index 0000000000..2f77367c8f
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/offline/changestonetworkingmodel/original-id.json
@@ -0,0 +1 @@
+{"original_id":"changesToNetworkingModel"}
\ No newline at end of file
diff --git a/testing/web-platform/tests/html/browsers/offline/introduction-4/event_downloading-manual.html b/testing/web-platform/tests/html/browsers/offline/introduction-4/event_downloading-manual.html
new file mode 100644
index 0000000000..26b003f06e
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/offline/introduction-4/event_downloading-manual.html
@@ -0,0 +1,23 @@
+
+
+  
+    Offline Application Cache - Event_downloading
+    
+    
+  
+  
+    
    
+      
  1. Modify the commented part of the manifest file (manifest/clock.manifest) on the server.
    2. 
+      
  2. Refresh the page.
    3. 
+    

+
+    

+
+    
+  
+
diff --git a/testing/web-platform/tests/html/browsers/offline/introduction-4/event_error-manual.html b/testing/web-platform/tests/html/browsers/offline/introduction-4/event_error-manual.html
new file mode 100644
index 0000000000..19abb3d6bf
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/offline/introduction-4/event_error-manual.html
@@ -0,0 +1,23 @@
+
+
+  
+    Offline Application Cache - Event_error
+    
+    
+  
+  
+    
    
+      
  1. Add a dummy file in the manifest file (manifest/clock.manifest).
    2. 
+      
  2. Refresh the page.
    3. 
+    

+
+    

+
+    
+  
+
diff --git a/testing/web-platform/tests/html/browsers/offline/introduction-4/event_obsolete-manual.html b/testing/web-platform/tests/html/browsers/offline/introduction-4/event_obsolete-manual.html
new file mode 100644
index 0000000000..cab5e01cc7
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/offline/introduction-4/event_obsolete-manual.html
@@ -0,0 +1,23 @@
+
+
+  
+    Offline Application Cache - Event_obsolete
+    
+    
+  
+  
+    
    
+      
  1. Remove the manifest file (manifest/clock.manifest) from the server.
    2. 
+      
  2. Refresh the page.
    3. 
+    

+
+    

+
+    
+  
+
diff --git a/testing/web-platform/tests/html/browsers/offline/introduction-4/event_updateready-manual.html b/testing/web-platform/tests/html/browsers/offline/introduction-4/event_updateready-manual.html
new file mode 100644
index 0000000000..4de435144d
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/offline/introduction-4/event_updateready-manual.html
@@ -0,0 +1,22 @@
+
+
+  
+    Offline Application Cache - Event_updateready
+    
+    
+  
+  
+    
    
+      
  1. Modify the commented part in the manifest file (manifest/clock.manifest) on the server.
    2. 
+      
  2. Refresh the page.
    3. 
+    

+    

+
+    
+  
+
diff --git a/testing/web-platform/tests/html/browsers/offline/introduction-4/event_updateready_swapcache-manual.html b/testing/web-platform/tests/html/browsers/offline/introduction-4/event_updateready_swapcache-manual.html
new file mode 100644
index 0000000000..da6cead026
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/offline/introduction-4/event_updateready_swapcache-manual.html
@@ -0,0 +1,30 @@
+
+
+  
+    Offline Application Cache - Event_updateready_swapCache
+    
+    
+  
+  
+    
    
+      
  1. Modify the commented part in manifest file (manifest/clock.manifest) on the server.
    2. 
+      
  2. Refresh the page.
    3. 
+    

+
+    

+
+    
+  
+
diff --git a/testing/web-platform/tests/html/browsers/offline/manifest_main_empty-manual.https.html b/testing/web-platform/tests/html/browsers/offline/manifest_main_empty-manual.https.html
new file mode 100644
index 0000000000..317aaa1137
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/offline/manifest_main_empty-manual.https.html
@@ -0,0 +1,14 @@
+
+
+  
+    Offline Application Cache - manifest_main_empty
+    
+  
+  
+    
    
+      
  1. Disable the network connection.
    2. 
+      
  2. Refresh the page.
    3. 
+      
  3. If the page is normally displayed, then test is PASS, otherwise FAIL.
    4. 
+    

+  
+
diff --git a/testing/web-platform/tests/html/browsers/offline/manifest_notchanged_online-manual.https.html b/testing/web-platform/tests/html/browsers/offline/manifest_notchanged_online-manual.https.html
new file mode 100644
index 0000000000..a464b426a7
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/offline/manifest_notchanged_online-manual.https.html
@@ -0,0 +1,19 @@
+
+
+  
+    Offline Application Cache - manifest_notchanged_online
+    
+    
+    
+    
+  
+  
+    
    
+      
  1. Remove time element of this html document and not change manifest file.
    2. 
+      
  2. Refresh the page.
    3. 
+      
  3. If the page is normally displayed, then test is PASS, otherwise FAIL.
    4. 
+    

+
+    
The time is: 

+  
+
diff --git a/testing/web-platform/tests/html/browsers/offline/manifest_section_empty-manual.https.html b/testing/web-platform/tests/html/browsers/offline/manifest_section_empty-manual.https.html
new file mode 100644
index 0000000000..eea2dbba35
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/offline/manifest_section_empty-manual.https.html
@@ -0,0 +1,19 @@
+
+
+  
+    Offline Application Cache - manifest_section_empty
+    
+    
+    
+    
+  
+  
+    
    
+      
  1. Disable the network connection.
    2. 
+      
  2. Refresh the page.
    3. 
+      
  3. If the time element and colors of result elements are normally displayed, then test is PASS, otherwise FAIL.
    4. 
+    

+
+    
The time is: 

+  
+
diff --git a/testing/web-platform/tests/html/browsers/offline/manifest_section_many-manual.https.html b/testing/web-platform/tests/html/browsers/offline/manifest_section_many-manual.https.html
new file mode 100644
index 0000000000..9378df1b40
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/offline/manifest_section_many-manual.https.html
@@ -0,0 +1,19 @@
+
+
+  
+    Offline Application Cache - manifest_section_many
+    
+    
+    
+    
+  
+  
+    
    
+      
  1. Disable the network connection.
    2. 
+      
  2. Refresh the page.
    3. 
+      
  3. If the time element and colors of result elements are normally displayed, then test is PASS, otherwise FAIL.
    4. 
+    

+
+    
The time is: 

+  
+
diff --git a/testing/web-platform/tests/html/browsers/offline/resources/css/clock.css b/testing/web-platform/tests/html/browsers/offline/resources/css/clock.css
new file mode 100644
index 0000000000..fa406d0fbe
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/offline/resources/css/clock.css
@@ -0,0 +1 @@
+output { font: 1em sans-serif; }
\ No newline at end of file
diff --git a/testing/web-platform/tests/html/browsers/offline/resources/css/offline.css b/testing/web-platform/tests/html/browsers/offline/resources/css/offline.css
new file mode 100644
index 0000000000..76b7f39853
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/offline/resources/css/offline.css
@@ -0,0 +1,5 @@
+.connectivity {
+    color: #fff;
+    background: red;
+    padding: 20px;
+}
\ No newline at end of file
diff --git a/testing/web-platform/tests/html/browsers/offline/resources/css/online.css b/testing/web-platform/tests/html/browsers/offline/resources/css/online.css
new file mode 100644
index 0000000000..39efcb2ab4
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/offline/resources/css/online.css
@@ -0,0 +1,5 @@
+.connectivity {
+    color: #fff;
+    background: blue;
+    padding: 20px;
+}
\ No newline at end of file
diff --git a/testing/web-platform/tests/html/browsers/offline/resources/css/result.css b/testing/web-platform/tests/html/browsers/offline/resources/css/result.css
new file mode 100644
index 0000000000..7d784b8ab5
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/offline/resources/css/result.css
@@ -0,0 +1,11 @@
+.manualpass {
+  color: green;
+}
+.manualfail {
+  color: red;
+}.pass {
+  color: green;
+}
+.fail {
+  color: red;
+}
diff --git a/testing/web-platform/tests/html/browsers/offline/resources/html/clock.html b/testing/web-platform/tests/html/browsers/offline/resources/html/clock.html
new file mode 100644
index 0000000000..6b8949a6b1
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/offline/resources/html/clock.html
@@ -0,0 +1,12 @@
+
+
+
+ 
+  Clock
+  
+  
+ 
+ 
+  
The time is: 

+ 
+
\ No newline at end of file
diff --git a/testing/web-platform/tests/html/browsers/offline/resources/js/clock.js b/testing/web-platform/tests/html/browsers/offline/resources/js/clock.js
new file mode 100644
index 0000000000..1ac0dca539
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/offline/resources/js/clock.js
@@ -0,0 +1,3 @@
+setTimeout(function () {
+    document.getElementById('clock').value = new Date();
+}, 1000);
\ No newline at end of file
diff --git a/testing/web-platform/tests/html/browsers/offline/resources/manifest/clock.manifest b/testing/web-platform/tests/html/browsers/offline/resources/manifest/clock.manifest
new file mode 100644
index 0000000000..a61aae6c61
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/offline/resources/manifest/clock.manifest
@@ -0,0 +1,17 @@
+CACHE MANIFEST
+
+# Version 1
+
+CACHE:
+../css/clock.css
+../js/clock.js
+../css/result.css
+../css/offline.css
+/resources/testharness.js
+/resources/testharnessreport.js
+
+NETWORK:
+../html/clock.html
+
+FALLBACK:
+../css/online.css ../css/offline.css
\ No newline at end of file
diff --git a/testing/web-platform/tests/html/browsers/offline/resources/manifest/section_empty.manifest b/testing/web-platform/tests/html/browsers/offline/resources/manifest/section_empty.manifest
new file mode 100644
index 0000000000..a23b9013be
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/offline/resources/manifest/section_empty.manifest
@@ -0,0 +1,10 @@
+CACHE MANIFEST
+
+# Version 1
+
+../css/clock.css
+../js/clock.js
+../css/result.css
+../css/online.css
+/resources/testharness.js
+/resources/testharnessreport.js
\ No newline at end of file
diff --git a/testing/web-platform/tests/html/browsers/offline/resources/manifest/section_many.manifest b/testing/web-platform/tests/html/browsers/offline/resources/manifest/section_many.manifest
new file mode 100644
index 0000000000..7e5e5e9995
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/offline/resources/manifest/section_many.manifest
@@ -0,0 +1,19 @@
+CACHE MANIFEST
+
+# Version 1
+
+CACHE:
+../css/clock.css
+../js/clock.js
+
+CACHE:
+../css/result.css
+../css/offline.css
+/resources/testharness.js
+/resources/testharnessreport.js
+
+NETWORK:
+../html/clock.html
+
+FALLBACK:
+../css/online.css ../css/offline.css
\ No newline at end of file
diff --git a/testing/web-platform/tests/html/browsers/offline/resources/manifest/url_check.manifest b/testing/web-platform/tests/html/browsers/offline/resources/manifest/url_check.manifest
new file mode 100644
index 0000000000..041df5e55f
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/offline/resources/manifest/url_check.manifest
@@ -0,0 +1,17 @@
+CACHE MANIFEST
+
+# Version 1
+
+CACHE:
+../css/cl#ock.css
+../js/clock.js
+../css/result.css
+../css/offline.css
+/resources/testharness.js
+/resources/testharnessreport.js
+
+NETWORK:
+../html/clock.html
+
+FALLBACK:
+../css/online.css ../css/offline.css
\ No newline at end of file
diff --git a/testing/web-platform/tests/html/browsers/offline/section_network_offline-manual.https.html b/testing/web-platform/tests/html/browsers/offline/section_network_offline-manual.https.html
new file mode 100644
index 0000000000..c4121f5bc5
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/offline/section_network_offline-manual.https.html
@@ -0,0 +1,17 @@
+
+
+  
+    Offline Application Cache - Section_network_offline
+    
+  
+  
+    
    
+      
  1. Disable the network connection.
    2. 
+      
  2. Refresh the page.
    3. 
+      
  3. If only the frame element can't be loaded, then test is PASS, otherwise FAIL.
    4. 
+    

+
+    
+  
+
diff --git a/testing/web-platform/tests/html/browsers/offline/section_network_online-manual.https.html b/testing/web-platform/tests/html/browsers/offline/section_network_online-manual.https.html
new file mode 100644
index 0000000000..a5d8e59406
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/offline/section_network_online-manual.https.html
@@ -0,0 +1,16 @@
+
+
+  
+    Offline Application Cache - Section_network_online
+    
+  
+  
+    
    
+      
  1. Refresh the page.
    2. 
+      
  2. If the frame element is loaded, then test is PASS, otherwise FAIL.
    3. 
+    

+
+    
+  
+
diff --git a/testing/web-platform/tests/html/browsers/origin/cross-origin-objects/cross-origin-due-to-document-domain-only.html b/testing/web-platform/tests/html/browsers/origin/cross-origin-objects/cross-origin-due-to-document-domain-only.html
new file mode 100644
index 0000000000..425374faec
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/origin/cross-origin-objects/cross-origin-due-to-document-domain-only.html
@@ -0,0 +1,33 @@
+
+Cross-origin due to document.domain
+
+
+
+

+
+
diff --git a/testing/web-platform/tests/html/browsers/origin/cross-origin-objects/cross-origin-objects-function-caching.html b/testing/web-platform/tests/html/browsers/origin/cross-origin-objects/cross-origin-objects-function-caching.html
new file mode 100644
index 0000000000..a8af18d106
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/origin/cross-origin-objects/cross-origin-objects-function-caching.html
@@ -0,0 +1,49 @@
+
+
+Cross-origin methods and accessors are cached per Realm via[[CrossOriginPropertyDescriptorMap]]
+
+
+
+
+
+

+
diff --git a/testing/web-platform/tests/html/browsers/origin/cross-origin-objects/cross-origin-objects-function-common.js b/testing/web-platform/tests/html/browsers/origin/cross-origin-objects/cross-origin-objects-function-common.js
new file mode 100644
index 0000000000..3b93b498a2
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/origin/cross-origin-objects/cross-origin-objects-function-common.js
@@ -0,0 +1,34 @@
+"use strict";
+
+const crossOriginWindowMethods = [
+    {key: "close", length: 0},
+    {key: "focus", length: 0},
+    {key: "blur", length: 0},
+    {key: "postMessage", length: 1},
+];
+
+const crossOriginWindowAccessors = [
+    "window",
+    "self",
+    "location",
+    "closed",
+    "frames",
+    "length",
+    "top",
+    "opener",
+    "parent",
+].map(key => ({key}));
+
+const makeCrossOriginWindow = t => {
+    const iframe = document.createElement("iframe");
+    const path = location.pathname.slice(0, location.pathname.lastIndexOf("/")) + "/frame.html";
+    iframe.src = get_host_info().HTTP_REMOTE_ORIGIN + path;
+
+    return new Promise((resolve, reject) => {
+        iframe.onload = () => { resolve(iframe.contentWindow); };
+        iframe.onerror = reject;
+
+        document.body.append(iframe);
+        t.add_cleanup(() => { iframe.remove(); });
+    });
+};
diff --git a/testing/web-platform/tests/html/browsers/origin/cross-origin-objects/cross-origin-objects-function-length.html b/testing/web-platform/tests/html/browsers/origin/cross-origin-objects/cross-origin-objects-function-length.html
new file mode 100644
index 0000000000..466915a461
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/origin/cross-origin-objects/cross-origin-objects-function-length.html
@@ -0,0 +1,45 @@
+
+
+Cross-origin methods and accessors are created with correct 'length' property
+
+
+
+
+
+

+
diff --git a/testing/web-platform/tests/html/browsers/origin/cross-origin-objects/cross-origin-objects-function-name.html b/testing/web-platform/tests/html/browsers/origin/cross-origin-objects/cross-origin-objects-function-name.html
new file mode 100644
index 0000000000..167c30e8f3
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/origin/cross-origin-objects/cross-origin-objects-function-name.html
@@ -0,0 +1,45 @@
+
+
+Cross-origin methods and accessors are created with correct 'name' property
+
+
+
+
+
+

+
diff --git a/testing/web-platform/tests/html/browsers/origin/cross-origin-objects/cross-origin-objects-on-new-window.html b/testing/web-platform/tests/html/browsers/origin/cross-origin-objects/cross-origin-objects-on-new-window.html
new file mode 100644
index 0000000000..3ad0de6a3a
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/origin/cross-origin-objects/cross-origin-objects-on-new-window.html
@@ -0,0 +1,25 @@
+
+
+
+Cross-origin behavior of Window and Location on new Window
+
+
+
+
+
+

+
diff --git a/testing/web-platform/tests/html/browsers/origin/cross-origin-objects/cross-origin-objects.html b/testing/web-platform/tests/html/browsers/origin/cross-origin-objects/cross-origin-objects.html
new file mode 100644
index 0000000000..d1b6cabc0f
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/origin/cross-origin-objects/cross-origin-objects.html
@@ -0,0 +1,718 @@
+
+
+
+Cross-origin behavior of Window and Location
+
+
+
+
+
+
+

+
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/origin/cross-origin-objects/frame-with-then.html b/testing/web-platform/tests/html/browsers/origin/cross-origin-objects/frame-with-then.html
new file mode 100644
index 0000000000..3eedeca38a
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/origin/cross-origin-objects/frame-with-then.html
@@ -0,0 +1,19 @@
+
+
+  
+  
+    
+    
+    
+    
+    
+    
+    
+    
+  
+
diff --git a/testing/web-platform/tests/html/browsers/origin/cross-origin-objects/frame.html b/testing/web-platform/tests/html/browsers/origin/cross-origin-objects/frame.html
new file mode 100644
index 0000000000..ca2dd8ebf8
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/origin/cross-origin-objects/frame.html
@@ -0,0 +1,51 @@
+
+
+
+
+
+
+  
+  
+  
+
+
diff --git a/testing/web-platform/tests/html/browsers/origin/cross-origin-objects/location-properties-smoke-test.html b/testing/web-platform/tests/html/browsers/origin/cross-origin-objects/location-properties-smoke-test.html
new file mode 100644
index 0000000000..1d1c1136a6
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/origin/cross-origin-objects/location-properties-smoke-test.html
@@ -0,0 +1,65 @@
+
+
+
+  Verify that certain location interface properties are protected cross-origin.
+
+
+
+
+
+
+
+ 
+
+
diff --git a/testing/web-platform/tests/html/browsers/origin/cross-origin-objects/resources/cross-origin-due-to-document-domain-only-helper.html b/testing/web-platform/tests/html/browsers/origin/cross-origin-objects/resources/cross-origin-due-to-document-domain-only-helper.html
new file mode 100644
index 0000000000..10ac8ece0e
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/origin/cross-origin-objects/resources/cross-origin-due-to-document-domain-only-helper.html
@@ -0,0 +1,9 @@
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/origin/cross-origin-objects/win-documentdomain.sub.html b/testing/web-platform/tests/html/browsers/origin/cross-origin-objects/win-documentdomain.sub.html
new file mode 100644
index 0000000000..a315e21208
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/origin/cross-origin-objects/win-documentdomain.sub.html
@@ -0,0 +1,63 @@
+
+
+
+  
+  
+
+
+  
+  
+  
+  
+
+
diff --git a/testing/web-platform/tests/html/browsers/origin/cross-origin-objects/window-location-and-location-href-cross-realm-set.html b/testing/web-platform/tests/html/browsers/origin/cross-origin-objects/window-location-and-location-href-cross-realm-set.html
new file mode 100644
index 0000000000..f03550a141
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/origin/cross-origin-objects/window-location-and-location-href-cross-realm-set.html
@@ -0,0 +1,106 @@
+
+
+Cross-realm [[Set]] to window.location and location.href throws an error of correct realm
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/origin/inheritance/about-blank-iframe.html b/testing/web-platform/tests/html/browsers/origin/inheritance/about-blank-iframe.html
new file mode 100644
index 0000000000..fabde327a1
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/origin/inheritance/about-blank-iframe.html
@@ -0,0 +1,28 @@
+
+
+  
+    about:blank in child browsing context aliases security origin
+    
+    
+  
+  
+    
+  
+
diff --git a/testing/web-platform/tests/html/browsers/origin/inheritance/about-blank-window.html b/testing/web-platform/tests/html/browsers/origin/inheritance/about-blank-window.html
new file mode 100644
index 0000000000..cc3177f943
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/origin/inheritance/about-blank-window.html
@@ -0,0 +1,25 @@
+
+
+  
+    about:blank in auxiliary browsing context aliases security origin
+    
+    
+  
+  
+    
+  
+
diff --git a/testing/web-platform/tests/html/browsers/origin/inheritance/about-srcdoc.html b/testing/web-platform/tests/html/browsers/origin/inheritance/about-srcdoc.html
new file mode 100644
index 0000000000..971811ee66
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/origin/inheritance/about-srcdoc.html
@@ -0,0 +1,29 @@
+
+
+  
+    about:srcdoc aliases security origin
+    
+    
+  
+  
+    
+  
+
diff --git a/testing/web-platform/tests/html/browsers/origin/inheritance/javascript-url.html b/testing/web-platform/tests/html/browsers/origin/inheritance/javascript-url.html
new file mode 100644
index 0000000000..7dfb1130ce
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/origin/inheritance/javascript-url.html
@@ -0,0 +1,33 @@
+
+
+  
+    javascript: aliases security origin
+    
+    
+  
+  
+    
+  
+
diff --git a/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/1-iframe/parent-no-child-bad-subdomain.sub.https.html b/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/1-iframe/parent-no-child-bad-subdomain.sub.https.html
new file mode 100644
index 0000000000..3a45ee6d6a
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/1-iframe/parent-no-child-bad-subdomain.sub.https.html
@@ -0,0 +1,27 @@
+
+
+Parent is site-keyed, child attempts to origin-key but uses a bad header value, child is a subdomain of the parent
+
+
+
+

+
+
diff --git a/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/1-iframe/parent-no-child-yes-port.sub.https.html b/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/1-iframe/parent-no-child-yes-port.sub.https.html
new file mode 100644
index 0000000000..85fb1f64e0
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/1-iframe/parent-no-child-yes-port.sub.https.html
@@ -0,0 +1,27 @@
+
+
+Parent is site-keyed, child is origin-keyed, child is different-origin to the parent because of a port mismatch
+
+
+
+

+
+
diff --git a/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/1-iframe/parent-no-child-yes-same.sub.https.html b/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/1-iframe/parent-no-child-yes-same.sub.https.html
new file mode 100644
index 0000000000..7ece02c81a
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/1-iframe/parent-no-child-yes-same.sub.https.html
@@ -0,0 +1,27 @@
+
+
+Parent is site-keyed, child is origin-keyed, child is same-origin to the parent
+
+
+
+

+
+
diff --git a/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/1-iframe/parent-no-child-yes-subdomain-with-redirect.sub.https.html b/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/1-iframe/parent-no-child-yes-subdomain-with-redirect.sub.https.html
new file mode 100644
index 0000000000..994f80876d
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/1-iframe/parent-no-child-yes-subdomain-with-redirect.sub.https.html
@@ -0,0 +1,27 @@
+
+
+Parent is site-keyed, child is reached via a redirect response with no header, child final response does have the header
+
+
+
+

+
+
diff --git a/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/1-iframe/parent-no-child-yes-subdomain.sub.https.html b/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/1-iframe/parent-no-child-yes-subdomain.sub.https.html
new file mode 100644
index 0000000000..5fc2fa29f3
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/1-iframe/parent-no-child-yes-subdomain.sub.https.html
@@ -0,0 +1,27 @@
+
+
+Parent is site-keyed, child is origin-keyed, child is a subdomain of the parent
+
+
+
+

+
+
diff --git a/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/1-iframe/parent-no-child-yeswithparams-subdomain.sub.https.html b/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/1-iframe/parent-no-child-yeswithparams-subdomain.sub.https.html
new file mode 100644
index 0000000000..3e7c8419b3
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/1-iframe/parent-no-child-yeswithparams-subdomain.sub.https.html
@@ -0,0 +1,27 @@
+
+
+Parent is site-keyed, child is origin-keyed using parameters on its structured header, child is a subdomain of the parent
+
+
+
+

+
+
diff --git a/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/1-iframe/parent-yes-child-no-port.sub.https.html b/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/1-iframe/parent-yes-child-no-port.sub.https.html
new file mode 100644
index 0000000000..f00814cfbf
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/1-iframe/parent-yes-child-no-port.sub.https.html
@@ -0,0 +1,27 @@
+
+
+Parent is origin-keyed, child is site-keyed, child is is different-origin to the parent because of a port mismatch
+
+
+
+

+
+
diff --git a/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/1-iframe/parent-yes-child-no-port.sub.https.html.headers b/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/1-iframe/parent-yes-child-no-port.sub.https.html.headers
new file mode 100644
index 0000000000..79a20f30fc
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/1-iframe/parent-yes-child-no-port.sub.https.html.headers
@@ -0,0 +1 @@
+Origin-Agent-Cluster: ?1
diff --git a/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/1-iframe/parent-yes-child-no-same.sub.https.html b/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/1-iframe/parent-yes-child-no-same.sub.https.html
new file mode 100644
index 0000000000..307f8c48d7
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/1-iframe/parent-yes-child-no-same.sub.https.html
@@ -0,0 +1,26 @@
+
+
+Parent is origin-keyed, child is site-keyed, child is same-origin to the parent
+
+
+
+

+
+
diff --git a/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/1-iframe/parent-yes-child-no-same.sub.https.html.headers b/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/1-iframe/parent-yes-child-no-same.sub.https.html.headers
new file mode 100644
index 0000000000..79a20f30fc
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/1-iframe/parent-yes-child-no-same.sub.https.html.headers
@@ -0,0 +1 @@
+Origin-Agent-Cluster: ?1
diff --git a/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/1-iframe/parent-yes-child-no-subdomain.sub.https.html b/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/1-iframe/parent-yes-child-no-subdomain.sub.https.html
new file mode 100644
index 0000000000..8c823fa36f
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/1-iframe/parent-yes-child-no-subdomain.sub.https.html
@@ -0,0 +1,27 @@
+
+
+Parent is origin-keyed, child is site-keyed, child is a subdomain of the parent
+
+
+
+

+
+
diff --git a/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/1-iframe/parent-yes-child-no-subdomain.sub.https.html.headers b/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/1-iframe/parent-yes-child-no-subdomain.sub.https.html.headers
new file mode 100644
index 0000000000..79a20f30fc
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/1-iframe/parent-yes-child-no-subdomain.sub.https.html.headers
@@ -0,0 +1 @@
+Origin-Agent-Cluster: ?1
diff --git a/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/1-iframe/parent-yes-child-yes-port.sub.https.html b/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/1-iframe/parent-yes-child-yes-port.sub.https.html
new file mode 100644
index 0000000000..5e431e6e41
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/1-iframe/parent-yes-child-yes-port.sub.https.html
@@ -0,0 +1,27 @@
+
+
+Parent is origin-keyed, child is site-keyed, child is different-origin to the parent because of a port mismatch
+
+
+
+

+
+
diff --git a/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/1-iframe/parent-yes-child-yes-port.sub.https.html.headers b/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/1-iframe/parent-yes-child-yes-port.sub.https.html.headers
new file mode 100644
index 0000000000..79a20f30fc
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/1-iframe/parent-yes-child-yes-port.sub.https.html.headers
@@ -0,0 +1 @@
+Origin-Agent-Cluster: ?1
diff --git a/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/1-iframe/parent-yes-child-yes-same.sub.https.html b/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/1-iframe/parent-yes-child-yes-same.sub.https.html
new file mode 100644
index 0000000000..3b8c214a61
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/1-iframe/parent-yes-child-yes-same.sub.https.html
@@ -0,0 +1,26 @@
+
+
+Parent is origin-keyed, child is site-keyed, child is same-origin to the parent
+
+
+
+

+
+
diff --git a/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/1-iframe/parent-yes-child-yes-same.sub.https.html.headers b/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/1-iframe/parent-yes-child-yes-same.sub.https.html.headers
new file mode 100644
index 0000000000..79a20f30fc
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/1-iframe/parent-yes-child-yes-same.sub.https.html.headers
@@ -0,0 +1 @@
+Origin-Agent-Cluster: ?1
diff --git a/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/1-iframe/parent-yes-child-yes-subdomain.sub.https.html b/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/1-iframe/parent-yes-child-yes-subdomain.sub.https.html
new file mode 100644
index 0000000000..136a3a0bba
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/1-iframe/parent-yes-child-yes-subdomain.sub.https.html
@@ -0,0 +1,27 @@
+
+
+Parent is origin-keyed, child is site-keyed, child is a subdomain of the parent
+
+
+
+

+
+
diff --git a/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/1-iframe/parent-yes-child-yes-subdomain.sub.https.html.headers b/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/1-iframe/parent-yes-child-yes-subdomain.sub.https.html.headers
new file mode 100644
index 0000000000..79a20f30fc
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/1-iframe/parent-yes-child-yes-subdomain.sub.https.html.headers
@@ -0,0 +1 @@
+Origin-Agent-Cluster: ?1
diff --git a/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/2-iframes/parent-no-child1-no-subdomain-child2-yes-subdomain.sub.https.html b/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/2-iframes/parent-no-child1-no-subdomain-child2-yes-subdomain.sub.https.html
new file mode 100644
index 0000000000..1bb252f0ab
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/2-iframes/parent-no-child1-no-subdomain-child2-yes-subdomain.sub.https.html
@@ -0,0 +1,36 @@
+
+
+Parent is site-keyed, subdomain child 1 is site-keyed, same-subdomain child 2 is origin-keyed
+
+
+
+

+
+
diff --git a/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/2-iframes/parent-no-child1-no-subdomain-child2-yes-subdomainport.sub.https.html b/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/2-iframes/parent-no-child1-no-subdomain-child2-yes-subdomainport.sub.https.html
new file mode 100644
index 0000000000..5b80c528f0
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/2-iframes/parent-no-child1-no-subdomain-child2-yes-subdomainport.sub.https.html
@@ -0,0 +1,37 @@
+
+
+Parent is site-keyed, subdomain child 1 is site-keyed, different-port-same-subdomain child 2 is origin-keyed
+
+
+
+

+
+
diff --git a/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/2-iframes/parent-no-child1-no-subdomain1-child2-yes-subdomain2.sub.https.html b/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/2-iframes/parent-no-child1-no-subdomain1-child2-yes-subdomain2.sub.https.html
new file mode 100644
index 0000000000..bba13b82a4
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/2-iframes/parent-no-child1-no-subdomain1-child2-yes-subdomain2.sub.https.html
@@ -0,0 +1,37 @@
+
+
+Parent is site-keyed, subdomain child 1 is site-keyed, different-subdomain child 2 is origin-keyed
+
+
+
+

+
+
diff --git a/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/2-iframes/parent-no-child1-yes-subdomain-child2-no-port.sub.https.html b/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/2-iframes/parent-no-child1-yes-subdomain-child2-no-port.sub.https.html
new file mode 100644
index 0000000000..d01d180213
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/2-iframes/parent-no-child1-yes-subdomain-child2-no-port.sub.https.html
@@ -0,0 +1,37 @@
+
+
+Parent is site-keyed, subdomain child 1 is origin-keyed, non-subdomain but different-port child 2 is site-keyed
+
+
+
+

+
+
diff --git a/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/2-iframes/parent-no-child1-yes-subdomain-child2-no-subdomain.sub.https.html b/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/2-iframes/parent-no-child1-yes-subdomain-child2-no-subdomain.sub.https.html
new file mode 100644
index 0000000000..9a245b3ace
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/2-iframes/parent-no-child1-yes-subdomain-child2-no-subdomain.sub.https.html
@@ -0,0 +1,38 @@
+
+
+Parent is site-keyed, subdomain child 1 is origin-keyed, same-subdomain child 2 is site-keyed
+
+
+
+

+
+
diff --git a/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/2-iframes/parent-yes-child1-no-subdomain-child2-no-subdomain.sub.https.html b/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/2-iframes/parent-yes-child1-no-subdomain-child2-no-subdomain.sub.https.html
new file mode 100644
index 0000000000..c308b9a17a
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/2-iframes/parent-yes-child1-no-subdomain-child2-no-subdomain.sub.https.html
@@ -0,0 +1,38 @@
+
+
+Parent is origin-keyed, subdomain child 1 is site-keyed, same-subdomain child 2 is site-keyed
+
+
+
+

+
+
diff --git a/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/2-iframes/parent-yes-child1-no-subdomain-child2-no-subdomain.sub.https.html.headers b/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/2-iframes/parent-yes-child1-no-subdomain-child2-no-subdomain.sub.https.html.headers
new file mode 100644
index 0000000000..79a20f30fc
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/2-iframes/parent-yes-child1-no-subdomain-child2-no-subdomain.sub.https.html.headers
@@ -0,0 +1 @@
+Origin-Agent-Cluster: ?1
diff --git a/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/2-iframes/parent-yes-child1-no-subdomain-child2-no-subdomain2.sub.https.html b/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/2-iframes/parent-yes-child1-no-subdomain-child2-no-subdomain2.sub.https.html
new file mode 100644
index 0000000000..767d908c21
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/2-iframes/parent-yes-child1-no-subdomain-child2-no-subdomain2.sub.https.html
@@ -0,0 +1,38 @@
+
+
+Parent is origin-keyed, subdomain child 1 is site-keyed, different-subdomain child 2 is site-keyed
+
+
+
+

+
+
diff --git a/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/2-iframes/parent-yes-child1-no-subdomain-child2-no-subdomain2.sub.https.html.headers b/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/2-iframes/parent-yes-child1-no-subdomain-child2-no-subdomain2.sub.https.html.headers
new file mode 100644
index 0000000000..79a20f30fc
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/2-iframes/parent-yes-child1-no-subdomain-child2-no-subdomain2.sub.https.html.headers
@@ -0,0 +1 @@
+Origin-Agent-Cluster: ?1
diff --git a/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/2-iframes/parent-yes-child1-no-subdomain-child2-yes-subdomain.sub.https.html b/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/2-iframes/parent-yes-child1-no-subdomain-child2-yes-subdomain.sub.https.html
new file mode 100644
index 0000000000..45047f3ae1
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/2-iframes/parent-yes-child1-no-subdomain-child2-yes-subdomain.sub.https.html
@@ -0,0 +1,38 @@
+
+
+Parent is origin-keyed, subdomain child 1 is site-keyed, same-subdomain child 2 is origin-keyed
+
+
+
+

+
+
diff --git a/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/2-iframes/parent-yes-child1-no-subdomain-child2-yes-subdomain.sub.https.html.headers b/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/2-iframes/parent-yes-child1-no-subdomain-child2-yes-subdomain.sub.https.html.headers
new file mode 100644
index 0000000000..79a20f30fc
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/2-iframes/parent-yes-child1-no-subdomain-child2-yes-subdomain.sub.https.html.headers
@@ -0,0 +1 @@
+Origin-Agent-Cluster: ?1
diff --git a/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/2-iframes/parent-yes-child1-no-subdomain-child2-yes-subdomain2.sub.https.html b/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/2-iframes/parent-yes-child1-no-subdomain-child2-yes-subdomain2.sub.https.html
new file mode 100644
index 0000000000..202b916767
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/2-iframes/parent-yes-child1-no-subdomain-child2-yes-subdomain2.sub.https.html
@@ -0,0 +1,38 @@
+
+
+Parent is origin-keyed, subdomain child 1 is site-keyed, different-subdomain child 2 is origin-keyed
+
+
+
+

+
+
diff --git a/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/2-iframes/parent-yes-child1-no-subdomain-child2-yes-subdomain2.sub.https.html.headers b/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/2-iframes/parent-yes-child1-no-subdomain-child2-yes-subdomain2.sub.https.html.headers
new file mode 100644
index 0000000000..79a20f30fc
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/2-iframes/parent-yes-child1-no-subdomain-child2-yes-subdomain2.sub.https.html.headers
@@ -0,0 +1 @@
+Origin-Agent-Cluster: ?1
diff --git a/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/2-iframes/parent-yes-child1-no-subdomain-child2-yes-subdomainport.sub.https.html b/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/2-iframes/parent-yes-child1-no-subdomain-child2-yes-subdomainport.sub.https.html
new file mode 100644
index 0000000000..a1316731ac
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/2-iframes/parent-yes-child1-no-subdomain-child2-yes-subdomainport.sub.https.html
@@ -0,0 +1,38 @@
+
+
+Parent is origin-keyed, subdomain child 1 is site-keyed, different-port-same-subdomain child 2 is origin-keyed
+
+
+
+

+
+
diff --git a/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/2-iframes/parent-yes-child1-no-subdomain-child2-yes-subdomainport.sub.https.html.headers b/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/2-iframes/parent-yes-child1-no-subdomain-child2-yes-subdomainport.sub.https.html.headers
new file mode 100644
index 0000000000..79a20f30fc
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/2-iframes/parent-yes-child1-no-subdomain-child2-yes-subdomainport.sub.https.html.headers
@@ -0,0 +1 @@
+Origin-Agent-Cluster: ?1
diff --git a/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/2-iframes/parent-yes-child1-yes-subdomain-child2-no-port.sub.https.html b/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/2-iframes/parent-yes-child1-yes-subdomain-child2-no-port.sub.https.html
new file mode 100644
index 0000000000..46bef4b9a9
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/2-iframes/parent-yes-child1-yes-subdomain-child2-no-port.sub.https.html
@@ -0,0 +1,36 @@
+
+
+Parent is origin-keyed, subdomain child 1 is origin-keyed, non-subdomain but different-port child 2 is site-keyed
+
+
+
+

+
+
diff --git a/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/2-iframes/parent-yes-child1-yes-subdomain-child2-no-port.sub.https.html.headers b/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/2-iframes/parent-yes-child1-yes-subdomain-child2-no-port.sub.https.html.headers
new file mode 100644
index 0000000000..79a20f30fc
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/2-iframes/parent-yes-child1-yes-subdomain-child2-no-port.sub.https.html.headers
@@ -0,0 +1 @@
+Origin-Agent-Cluster: ?1
diff --git a/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/2-iframes/parent-yes-child1-yes-subdomain-child2-no-subdomain.sub.https.html b/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/2-iframes/parent-yes-child1-yes-subdomain-child2-no-subdomain.sub.https.html
new file mode 100644
index 0000000000..39dcfc04b0
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/2-iframes/parent-yes-child1-yes-subdomain-child2-no-subdomain.sub.https.html
@@ -0,0 +1,38 @@
+
+
+Parent is origin-keyed, subdomain child 1 is origin-keyed, same-subdomain child 2 is site-keyed
+
+
+
+

+
+
diff --git a/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/2-iframes/parent-yes-child1-yes-subdomain-child2-no-subdomain.sub.https.html.headers b/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/2-iframes/parent-yes-child1-yes-subdomain-child2-no-subdomain.sub.https.html.headers
new file mode 100644
index 0000000000..79a20f30fc
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/2-iframes/parent-yes-child1-yes-subdomain-child2-no-subdomain.sub.https.html.headers
@@ -0,0 +1 @@
+Origin-Agent-Cluster: ?1
diff --git a/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/2-iframes/parent-yes-child1-yes-subdomain-child2-yes-subdomain.sub.https.html b/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/2-iframes/parent-yes-child1-yes-subdomain-child2-yes-subdomain.sub.https.html
new file mode 100644
index 0000000000..b6daf91b54
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/2-iframes/parent-yes-child1-yes-subdomain-child2-yes-subdomain.sub.https.html
@@ -0,0 +1,39 @@
+
+
+Parent is origin-keyed, subdomain child 1 is origin-keyed, same-subdomain child 2 is site-keyed
+
+
+
+

+
+
diff --git a/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/2-iframes/parent-yes-child1-yes-subdomain-child2-yes-subdomain.sub.https.html.headers b/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/2-iframes/parent-yes-child1-yes-subdomain-child2-yes-subdomain.sub.https.html.headers
new file mode 100644
index 0000000000..79a20f30fc
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/2-iframes/parent-yes-child1-yes-subdomain-child2-yes-subdomain.sub.https.html.headers
@@ -0,0 +1 @@
+Origin-Agent-Cluster: ?1
diff --git a/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/2-iframes/parent-yes-child1-yes-subdomain-child2-yes-subdomain2.sub.https.html b/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/2-iframes/parent-yes-child1-yes-subdomain-child2-yes-subdomain2.sub.https.html
new file mode 100644
index 0000000000..b94f9392d4
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/2-iframes/parent-yes-child1-yes-subdomain-child2-yes-subdomain2.sub.https.html
@@ -0,0 +1,38 @@
+
+
+Parent is origin-keyed, subdomain child 1 is origin-keyed, different-subdomain child 2 is origin-keyed
+
+
+
+

+
+
diff --git a/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/2-iframes/parent-yes-child1-yes-subdomain-child2-yes-subdomain2.sub.https.html.headers b/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/2-iframes/parent-yes-child1-yes-subdomain-child2-yes-subdomain2.sub.https.html.headers
new file mode 100644
index 0000000000..79a20f30fc
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/2-iframes/parent-yes-child1-yes-subdomain-child2-yes-subdomain2.sub.https.html.headers
@@ -0,0 +1 @@
+Origin-Agent-Cluster: ?1
diff --git a/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/2-iframes/parent-yes-child1-yes-subdomain-child2-yes-subdomainport.sub.https.html b/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/2-iframes/parent-yes-child1-yes-subdomain-child2-yes-subdomainport.sub.https.html
new file mode 100644
index 0000000000..fb3fda1bf2
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/2-iframes/parent-yes-child1-yes-subdomain-child2-yes-subdomainport.sub.https.html
@@ -0,0 +1,38 @@
+
+
+Parent is origin-keyed, subdomain child 1 is origin-keyed, different-port-same-subdomain child 2 is origin-keyed
+
+
+
+

+
+
diff --git a/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/2-iframes/parent-yes-child1-yes-subdomain-child2-yes-subdomainport.sub.https.html.headers b/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/2-iframes/parent-yes-child1-yes-subdomain-child2-yes-subdomainport.sub.https.html.headers
new file mode 100644
index 0000000000..79a20f30fc
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/2-iframes/parent-yes-child1-yes-subdomain-child2-yes-subdomainport.sub.https.html.headers
@@ -0,0 +1 @@
+Origin-Agent-Cluster: ?1
diff --git a/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/META.yml b/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/META.yml
new file mode 100644
index 0000000000..f21ce69f6a
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/META.yml
@@ -0,0 +1,5 @@
+spec: https://html.spec.whatwg.org/multipage/#origin-keyed-agent-clusters
+suggested_reviewers:
+  - domenic
+  - annevk
+  - wjmaclean
diff --git a/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/README.md b/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/README.md
new file mode 100644
index 0000000000..85ba3bce7f
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/README.md
@@ -0,0 +1,30 @@
+# Origin-keyed agent clusters tests
+
+These are tests for the [origin-keyed agent clusters](https://html.spec.whatwg.org/multipage/origin.html#origin-keyed-agent-clusters)
+feature.
+
+## Test filenames
+
+The tests in `2-iframes` follow the file naming pattern
+
+```
+parent-[yes|no]-child1-[yes|no]-[designator]-child2-[yes|no]-[designator]
+```
+
+Here:
+
+* `yes` or `no` refers to whether the `Origin-Agent-Cluster` header is set or
+  unset.
+* `designator` explains how the child differs from the parent: e.g. by being a
+  subdomain, or having a different port, or both. There's also `same` if it's
+  same-origin.
+
+Other directories have variations on this, e.g. `1-iframe/` does the same thing
+but for a single `child` instead of `child1` and `child2`, and `navigation/`
+uses `1` and `2` to represent the two different locations the single iframe will
+be navigated to.
+
+## Coverage
+
+Header parsing is covered by a few tests in the `1-iframe/` subdirectory, and
+not duplicated to all other scenarios.
diff --git a/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/about-blank.https.sub.html b/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/about-blank.https.sub.html
new file mode 100644
index 0000000000..556d528aa0
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/about-blank.https.sub.html
@@ -0,0 +1,63 @@
+
+
+The initial about:blank respects origin isolation
+
+
+
+

+
+
diff --git a/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/about-blank.https.sub.html.headers b/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/about-blank.https.sub.html.headers
new file mode 100644
index 0000000000..79a20f30fc
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/about-blank.https.sub.html.headers
@@ -0,0 +1 @@
+Origin-Agent-Cluster: ?1
diff --git a/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/document-domain.sub.https.html b/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/document-domain.sub.https.html
new file mode 100644
index 0000000000..b4535d9e54
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/document-domain.sub.https.html
@@ -0,0 +1,52 @@
+
+
+Setting document.domain does not change same-originness when origin-keyed
+
+
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/document-domain.sub.https.html.headers b/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/document-domain.sub.https.html.headers
new file mode 100644
index 0000000000..79a20f30fc
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/document-domain.sub.https.html.headers
@@ -0,0 +1 @@
+Origin-Agent-Cluster: ?1
diff --git a/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/getter-special-cases/cross-origin-isolated.sub.https.html b/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/getter-special-cases/cross-origin-isolated.sub.https.html
new file mode 100644
index 0000000000..a521934cc9
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/getter-special-cases/cross-origin-isolated.sub.https.html
@@ -0,0 +1,28 @@
+
+
+window.originAgentCluster must be implied by cross-origin isolation
+
+
+
+
+
+

+
+
diff --git a/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/getter-special-cases/cross-origin-isolated.sub.https.html.headers b/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/getter-special-cases/cross-origin-isolated.sub.https.html.headers
new file mode 100644
index 0000000000..5f8621ef83
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/getter-special-cases/cross-origin-isolated.sub.https.html.headers
@@ -0,0 +1,2 @@
+Cross-Origin-Embedder-Policy: require-corp
+Cross-Origin-Opener-Policy: same-origin
diff --git a/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/getter-special-cases/csp-sandbox-no.https.html b/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/getter-special-cases/csp-sandbox-no.https.html
new file mode 100644
index 0000000000..e0b5f92376
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/getter-special-cases/csp-sandbox-no.https.html
@@ -0,0 +1,15 @@
+
+
+window.originAgentCluster for a top-level frame sandboxed by CSP with no Origin-Agent-Cluster header
+
+
+
+

+
+
diff --git a/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/getter-special-cases/csp-sandbox-no.https.html.headers b/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/getter-special-cases/csp-sandbox-no.https.html.headers
new file mode 100644
index 0000000000..4705ce9ded
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/getter-special-cases/csp-sandbox-no.https.html.headers
@@ -0,0 +1 @@
+Content-Security-Policy: sandbox allow-scripts;
diff --git a/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/getter-special-cases/csp-sandbox-yes.https.html b/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/getter-special-cases/csp-sandbox-yes.https.html
new file mode 100644
index 0000000000..a2220c5acc
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/getter-special-cases/csp-sandbox-yes.https.html
@@ -0,0 +1,15 @@
+
+
+window.originAgentCluster for a top-level frame sandboxed by CSP with an Origin-Agent-Cluster header
+
+
+
+

+
+
diff --git a/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/getter-special-cases/csp-sandbox-yes.https.html.headers b/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/getter-special-cases/csp-sandbox-yes.https.html.headers
new file mode 100644
index 0000000000..a52bf50900
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/getter-special-cases/csp-sandbox-yes.https.html.headers
@@ -0,0 +1,2 @@
+Content-Security-Policy: sandbox allow-scripts;
+Origin-Agent-Cluster: ?1
diff --git a/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/getter-special-cases/data-to-javascript-no.https.html b/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/getter-special-cases/data-to-javascript-no.https.html
new file mode 100644
index 0000000000..06149cda8a
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/getter-special-cases/data-to-javascript-no.https.html
@@ -0,0 +1,12 @@
+
+
+window.originAgentCluster for a javascript: URL navigated to from a data: URL on a site-keyed page
+
+
+
+

+
+
diff --git a/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/getter-special-cases/data-to-javascript-yes.https.html b/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/getter-special-cases/data-to-javascript-yes.https.html
new file mode 100644
index 0000000000..af6fea0ad9
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/getter-special-cases/data-to-javascript-yes.https.html
@@ -0,0 +1,12 @@
+
+
+window.originAgentCluster for a javascript: URL navigated to from a data: URL on an origin-keyed page
+
+
+
+

+
+
diff --git a/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/getter-special-cases/data-to-javascript-yes.https.html.headers b/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/getter-special-cases/data-to-javascript-yes.https.html.headers
new file mode 100644
index 0000000000..79a20f30fc
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/getter-special-cases/data-to-javascript-yes.https.html.headers
@@ -0,0 +1 @@
+Origin-Agent-Cluster: ?1
diff --git a/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/getter-special-cases/data-url-no.https.html b/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/getter-special-cases/data-url-no.https.html
new file mode 100644
index 0000000000..8ae564a072
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/getter-special-cases/data-url-no.https.html
@@ -0,0 +1,12 @@
+
+
+window.originAgentCluster for a data: URL on a site-keyed page
+
+
+
+

+
+
diff --git a/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/getter-special-cases/data-url-yes.https.html b/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/getter-special-cases/data-url-yes.https.html
new file mode 100644
index 0000000000..bcbf098a66
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/getter-special-cases/data-url-yes.https.html
@@ -0,0 +1,12 @@
+
+
+window.originAgentCluster for a data: URL on an origin-keyed page
+
+
+
+

+
+
diff --git a/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/getter-special-cases/data-url-yes.https.html.headers b/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/getter-special-cases/data-url-yes.https.html.headers
new file mode 100644
index 0000000000..79a20f30fc
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/getter-special-cases/data-url-yes.https.html.headers
@@ -0,0 +1 @@
+Origin-Agent-Cluster: ?1
diff --git a/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/getter-special-cases/javascript-url-no.https.html b/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/getter-special-cases/javascript-url-no.https.html
new file mode 100644
index 0000000000..1b54ad42a4
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/getter-special-cases/javascript-url-no.https.html
@@ -0,0 +1,12 @@
+
+
+window.originAgentCluster for a javascript: URL on a site-keyed page
+
+
+
+

+
+
diff --git a/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/getter-special-cases/javascript-url-yes.https.html b/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/getter-special-cases/javascript-url-yes.https.html
new file mode 100644
index 0000000000..e2b7730dd2
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/getter-special-cases/javascript-url-yes.https.html
@@ -0,0 +1,12 @@
+
+
+window.originAgentCluster for a javascript: URL on an origin-keyed page
+
+
+
+

+
+
diff --git a/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/getter-special-cases/javascript-url-yes.https.html.headers b/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/getter-special-cases/javascript-url-yes.https.html.headers
new file mode 100644
index 0000000000..79a20f30fc
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/getter-special-cases/javascript-url-yes.https.html.headers
@@ -0,0 +1 @@
+Origin-Agent-Cluster: ?1
diff --git a/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/getter-special-cases/removed-iframe.sub.https.html b/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/getter-special-cases/removed-iframe.sub.https.html
new file mode 100644
index 0000000000..fcf5068908
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/getter-special-cases/removed-iframe.sub.https.html
@@ -0,0 +1,27 @@
+
+
+window.originAgentCluster for a removed frame
+
+
+
+

+
+
diff --git a/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/getter-special-cases/removed-iframe.sub.https.html.headers b/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/getter-special-cases/removed-iframe.sub.https.html.headers
new file mode 100644
index 0000000000..79a20f30fc
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/getter-special-cases/removed-iframe.sub.https.html.headers
@@ -0,0 +1 @@
+Origin-Agent-Cluster: ?1
diff --git a/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/getter-special-cases/resources/data-to-javascript-test.mjs b/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/getter-special-cases/resources/data-to-javascript-test.mjs
new file mode 100644
index 0000000000..3a88253ee3
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/getter-special-cases/resources/data-to-javascript-test.mjs
@@ -0,0 +1,33 @@
+import { insertCustomIframe, testSupportScript } from "./helpers.mjs";
+import { waitForIframe, testGetter } from "../../resources/helpers.mjs";
+
+const testSupportScriptSuitableForNesting =
+  testSupportScript.replace('', '');
+
+export default () => {
+  promise_setup(async () => {
+    const jsURL = `javascript:'${testSupportScript}'`;
+    const iframe = await insertCustomIframe(`data:text/html,
+      Start page
+      
+    `);
+
+    const waitPromise = waitForIframe(iframe, "javascript: URL");
+
+    // Kick off the navigation. We can't do it directly because only same-origin
+    // pages can navigate to a javascript: URL, and we're not same-origin with
+    // a data: URL.
+    iframe.contentWindow.postMessage(undefined, "*");
+
+    await waitPromise;
+  });
+
+  // The javascript: URL iframe inherits its origin from the previous occupant
+  // of the iframe, which is a data: URL, so it should always be true.
+
+  testGetter(0, true);
+};
diff --git a/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/getter-special-cases/resources/data-url-test.mjs b/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/getter-special-cases/resources/data-url-test.mjs
new file mode 100644
index 0000000000..1a9b3be47f
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/getter-special-cases/resources/data-url-test.mjs
@@ -0,0 +1,13 @@
+import { insertCustomIframe, testSupportScript } from "./helpers.mjs";
+import { testGetter } from "../../resources/helpers.mjs";
+
+export default () => {
+  promise_setup(() => {
+    return insertCustomIframe(`data:text/html,${testSupportScript}`);
+  });
+
+  // The data: URL iframe has an opaque origin, so it should return true, since
+  // for them site === origin so they are always origin-keyed.
+
+  testGetter(0, true, "data: URL child");
+};
diff --git a/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/getter-special-cases/resources/helpers.mjs b/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/getter-special-cases/resources/helpers.mjs
new file mode 100644
index 0000000000..4610ffcad0
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/getter-special-cases/resources/helpers.mjs
@@ -0,0 +1,28 @@
+import { waitForIframe } from "../../resources/helpers.mjs";
+
+/**
+ * Inserts an iframe, not specialized for origin-keyed agent cluster testing,
+ * pointing to a custom URL. This is just a wrapper to remove some boilerplate.
+ * @param {string} src - The src="" value for the iframe
+ */
+export async function insertCustomIframe(src) {
+  const iframe = document.createElement("iframe");
+  iframe.src = src;
+
+  const waitPromise = waitForIframe(iframe);
+  document.body.append(iframe);
+  await waitPromise;
+
+  return iframe;
+}
+
+/**
+ * This is the part of send-oac-header.py that allows us to reuse testGetter.
+ */
+export const testSupportScript = `
+  
+`;
diff --git a/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/getter-special-cases/resources/javascript-url-test.mjs b/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/getter-special-cases/resources/javascript-url-test.mjs
new file mode 100644
index 0000000000..de474d8caf
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/getter-special-cases/resources/javascript-url-test.mjs
@@ -0,0 +1,14 @@
+import { insertCustomIframe, testSupportScript } from "./helpers.mjs";
+import { testGetter } from "../../resources/helpers.mjs";
+
+export default ({ expected }) => {
+  promise_setup(() => {
+    return insertCustomIframe(`javascript:'${testSupportScript}'`);
+  });
+
+  // The javascript: URL iframe inherits its origin from the previous occupant
+  // of the iframe, which is about:blank, which in turn inherits from the
+  // parent. So, the caller needs to tell us what to expect.
+
+  testGetter(0, expected);
+};
diff --git a/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/getter-special-cases/resources/sandboxed-iframe-test.sub.mjs b/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/getter-special-cases/resources/sandboxed-iframe-test.sub.mjs
new file mode 100644
index 0000000000..9357df00c5
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/getter-special-cases/resources/sandboxed-iframe-test.sub.mjs
@@ -0,0 +1,20 @@
+import {
+  navigateIframe,
+  testGetter
+} from "../../resources/helpers.mjs";
+
+export default () => {
+  // We do this manually instead of using insertIframe because we want to add a
+  // sandbox="" attribute and we don't want to set both document.domains.
+  promise_setup(() => {
+    const iframe = document.createElement("iframe");
+    iframe.sandbox = "allow-scripts";
+    const navigatePromise = navigateIframe(iframe, "{{hosts[][]}}", "?1");
+    document.body.append(iframe);
+    return navigatePromise;
+  });
+
+  // Sandboxed iframes have an opaque origin, so it should return true, since
+  // for them site === origin so they are always origin-keyed.
+  testGetter(0, true);
+};
diff --git a/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/getter-special-cases/resources/sandboxed-same-origin-iframe-test.sub.mjs b/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/getter-special-cases/resources/sandboxed-same-origin-iframe-test.sub.mjs
new file mode 100644
index 0000000000..272f805870
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/getter-special-cases/resources/sandboxed-same-origin-iframe-test.sub.mjs
@@ -0,0 +1,20 @@
+import {
+  navigateIframe,
+  testGetter
+} from "../../resources/helpers.mjs";
+
+export default ({ expected }) => {
+  // We do this manually instead of using insertIframe because we want to add a
+  // sandbox="" attribute and we don't want to set both document.domains.
+  promise_setup(() => {
+    const iframe = document.createElement("iframe");
+    iframe.sandbox = "allow-scripts allow-same-origin";
+    const navigatePromise = navigateIframe(iframe, "{{hosts[][]}}", "?1");
+    document.body.append(iframe);
+    return navigatePromise;
+  });
+
+  // Since the allow-same-origin token is set, this should behave like a normal
+  // iframe, and follow the embedder.
+  testGetter(0, expected);
+};
diff --git a/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/getter-special-cases/sandboxed-iframe-no.https.html b/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/getter-special-cases/sandboxed-iframe-no.https.html
new file mode 100644
index 0000000000..29758a17b8
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/getter-special-cases/sandboxed-iframe-no.https.html
@@ -0,0 +1,12 @@
+
+
+window.originAgentCluster for a sandboxed iframe on a site-keyed page
+
+
+
+

+
+
diff --git a/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/getter-special-cases/sandboxed-iframe-yes.https.html b/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/getter-special-cases/sandboxed-iframe-yes.https.html
new file mode 100644
index 0000000000..5eb5d08d10
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/getter-special-cases/sandboxed-iframe-yes.https.html
@@ -0,0 +1,12 @@
+
+
+window.originAgentCluster for a sandboxed iframe on an origin-keyed page
+
+
+
+

+
+
diff --git a/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/getter-special-cases/sandboxed-iframe-yes.https.html.headers b/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/getter-special-cases/sandboxed-iframe-yes.https.html.headers
new file mode 100644
index 0000000000..79a20f30fc
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/getter-special-cases/sandboxed-iframe-yes.https.html.headers
@@ -0,0 +1 @@
+Origin-Agent-Cluster: ?1
diff --git a/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/getter-special-cases/sandboxed-same-origin-iframe-no.https.html b/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/getter-special-cases/sandboxed-same-origin-iframe-no.https.html
new file mode 100644
index 0000000000..3ed4096f39
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/getter-special-cases/sandboxed-same-origin-iframe-no.https.html
@@ -0,0 +1,12 @@
+
+
+window.originAgentCluster for a sandboxed, but same-origin, iframe on a site-keyed page
+
+
+
+

+
+
diff --git a/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/getter-special-cases/sandboxed-same-origin-iframe-yes.https.html b/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/getter-special-cases/sandboxed-same-origin-iframe-yes.https.html
new file mode 100644
index 0000000000..c7ea5f0693
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/getter-special-cases/sandboxed-same-origin-iframe-yes.https.html
@@ -0,0 +1,12 @@
+
+
+window.originAgentCluster for a sandboxed, but same-origin, iframe on an origin-keyed page
+
+
+
+

+
+
diff --git a/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/getter-special-cases/sandboxed-same-origin-iframe-yes.https.html.headers b/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/getter-special-cases/sandboxed-same-origin-iframe-yes.https.html.headers
new file mode 100644
index 0000000000..79a20f30fc
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/getter-special-cases/sandboxed-same-origin-iframe-yes.https.html.headers
@@ -0,0 +1 @@
+Origin-Agent-Cluster: ?1
diff --git a/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/going-back.sub.https.html b/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/going-back.sub.https.html
new file mode 100644
index 0000000000..a593619ea6
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/going-back.sub.https.html
@@ -0,0 +1,62 @@
+
+
+Parent is origin-keyed, child1 is site-keyed, child1 navigates to a different site, child2 gets inserted and is origin-keyed, child1 navigates back
+
+
+
+

+
+
diff --git a/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/going-back.sub.https.html.headers b/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/going-back.sub.https.html.headers
new file mode 100644
index 0000000000..79a20f30fc
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/going-back.sub.https.html.headers
@@ -0,0 +1 @@
+Origin-Agent-Cluster: ?1
diff --git a/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/iframe-navigation/parent-no-1-no-same-2-yes-port.sub.https.html b/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/iframe-navigation/parent-no-1-no-same-2-yes-port.sub.https.html
new file mode 100644
index 0000000000..8237f2f23f
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/iframe-navigation/parent-no-1-no-same-2-yes-port.sub.https.html
@@ -0,0 +1,41 @@
+
+
+Parent is site-keyed, navigate a frame from same-origin site-keyed to different-origin (different-port) origin-keyed
+
+
+
+

+
+
diff --git a/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/iframe-navigation/parent-no-1-no-same-2-yes-subdomain.sub.https.html b/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/iframe-navigation/parent-no-1-no-same-2-yes-subdomain.sub.https.html
new file mode 100644
index 0000000000..00d8c3164a
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/iframe-navigation/parent-no-1-no-same-2-yes-subdomain.sub.https.html
@@ -0,0 +1,41 @@
+
+
+Parent is site-keyed, navigate a frame from same-origin site-keyed to different-origin (subdomain) origin-keyed
+
+
+
+

+
+
diff --git a/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/iframe-navigation/parent-no-1-no-subdomain-2-yes-subdomain.sub.https.html b/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/iframe-navigation/parent-no-1-no-subdomain-2-yes-subdomain.sub.https.html
new file mode 100644
index 0000000000..803e684e1c
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/iframe-navigation/parent-no-1-no-subdomain-2-yes-subdomain.sub.https.html
@@ -0,0 +1,40 @@
+
+
+Parent is site-keyed, navigate a frame from a subdomain site-keyed to the same subdomain origin-keyed
+
+
+
+

+
+
diff --git a/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/iframe-navigation/parent-no-1-no-subdomain-2-yes-subdomain2.sub.https.html b/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/iframe-navigation/parent-no-1-no-subdomain-2-yes-subdomain2.sub.https.html
new file mode 100644
index 0000000000..b96d10afd1
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/iframe-navigation/parent-no-1-no-subdomain-2-yes-subdomain2.sub.https.html
@@ -0,0 +1,41 @@
+
+
+Parent is site-keyed, navigate a frame from a subdomain site-keyed to a second-subdomain origin-keyed
+
+
+
+

+
+
diff --git a/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/iframe-navigation/parent-no-1-subdomain-yes-2-subdomain2-no.sub.https.html b/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/iframe-navigation/parent-no-1-subdomain-yes-2-subdomain2-no.sub.https.html
new file mode 100644
index 0000000000..a70ed56670
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/iframe-navigation/parent-no-1-subdomain-yes-2-subdomain2-no.sub.https.html
@@ -0,0 +1,43 @@
+
+
+Parent is site-keyed, navigate a frame from a subdomain origin-keyed to a second-subdomain site-keyed
+
+
+
+

+
+
diff --git a/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/iframe-navigation/parent-no-1-yes-subdomain-2-no-subdomain.sub.https.html b/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/iframe-navigation/parent-no-1-yes-subdomain-2-no-subdomain.sub.https.html
new file mode 100644
index 0000000000..38e2630128
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/iframe-navigation/parent-no-1-yes-subdomain-2-no-subdomain.sub.https.html
@@ -0,0 +1,41 @@
+
+
+Parent is site-keyed, navigate a frame from a subdomain origin-keyed to the same subdomain site-keyed
+
+
+
+

+
+
diff --git a/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/iframe-navigation/parent-yes-1-no-same-2-no-port.sub.https.html b/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/iframe-navigation/parent-yes-1-no-same-2-no-port.sub.https.html
new file mode 100644
index 0000000000..6211845be1
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/iframe-navigation/parent-yes-1-no-same-2-no-port.sub.https.html
@@ -0,0 +1,41 @@
+
+
+Parent is origin-keyed, navigate a frame from same-origin site-keyed to different-origin (different-port) origin-keyed
+
+
+
+

+
+
diff --git a/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/iframe-navigation/parent-yes-1-no-same-2-no-port.sub.https.html.headers b/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/iframe-navigation/parent-yes-1-no-same-2-no-port.sub.https.html.headers
new file mode 100644
index 0000000000..79a20f30fc
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/iframe-navigation/parent-yes-1-no-same-2-no-port.sub.https.html.headers
@@ -0,0 +1 @@
+Origin-Agent-Cluster: ?1
diff --git a/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/iframe-navigation/parent-yes-1-no-same-2-no-subdomain.sub.https.html b/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/iframe-navigation/parent-yes-1-no-same-2-no-subdomain.sub.https.html
new file mode 100644
index 0000000000..ead56754a7
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/iframe-navigation/parent-yes-1-no-same-2-no-subdomain.sub.https.html
@@ -0,0 +1,41 @@
+
+
+Parent is origin-keyed, navigate a frame from same-origin site-keyed to different-origin (subdomain) origin-keyed
+
+
+
+

+
+
diff --git a/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/iframe-navigation/parent-yes-1-no-same-2-no-subdomain.sub.https.html.headers b/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/iframe-navigation/parent-yes-1-no-same-2-no-subdomain.sub.https.html.headers
new file mode 100644
index 0000000000..79a20f30fc
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/iframe-navigation/parent-yes-1-no-same-2-no-subdomain.sub.https.html.headers
@@ -0,0 +1 @@
+Origin-Agent-Cluster: ?1
diff --git a/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/insecure-http.sub.html b/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/insecure-http.sub.html
new file mode 100644
index 0000000000..6f9e5d8b73
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/insecure-http.sub.html
@@ -0,0 +1,26 @@
+
+
+Parent requests origin-keying, child requests origin-keying, child is a subdomain of the parent, but all over insecure HTTP
+
+
+
+

+
+
diff --git a/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/insecure-http.sub.html.headers b/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/insecure-http.sub.html.headers
new file mode 100644
index 0000000000..79a20f30fc
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/insecure-http.sub.html.headers
@@ -0,0 +1 @@
+Origin-Agent-Cluster: ?1
diff --git a/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/popups-crash.https.html b/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/popups-crash.https.html
new file mode 100644
index 0000000000..dcfb5eb277
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/popups-crash.https.html
@@ -0,0 +1,9 @@
+
+
+Crash test for https://crbug.com/1099718
+
+

+
+
diff --git a/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/popups/opener-no-openee-yes-port.sub.https.html b/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/popups/opener-no-openee-yes-port.sub.https.html
new file mode 100644
index 0000000000..a0bf569b12
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/popups/opener-no-openee-yes-port.sub.https.html
@@ -0,0 +1,28 @@
+
+
+Opener is site-keyed, openee is origin-keyed, openee is different-origin to the opener because of a port mismatch
+
+
+
+

+
+
diff --git a/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/popups/opener-no-openee-yes-same.sub.https.html b/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/popups/opener-no-openee-yes-same.sub.https.html
new file mode 100644
index 0000000000..196dff1449
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/popups/opener-no-openee-yes-same.sub.https.html
@@ -0,0 +1,27 @@
+
+
+Opener is site-keyed, openee is origin-keyed, openee is same-origin to the opener
+
+
+
+

+
+
diff --git a/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/popups/opener-no-openee-yes-subdomain.sub.https.html b/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/popups/opener-no-openee-yes-subdomain.sub.https.html
new file mode 100644
index 0000000000..f96d2273d5
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/popups/opener-no-openee-yes-subdomain.sub.https.html
@@ -0,0 +1,28 @@
+
+
+Opener is site-keyed, openee is origin-keyed, openee is a subdomain of the opener
+
+
+
+

+
+
diff --git a/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/popups/opener-yes-openee-no-port.sub.https.html b/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/popups/opener-yes-openee-no-port.sub.https.html
new file mode 100644
index 0000000000..51c5a208c5
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/popups/opener-yes-openee-no-port.sub.https.html
@@ -0,0 +1,28 @@
+
+
+Opener is origin-keyed, openee is site-keyed, openee is different-origin to the opener because of a port mismatch
+
+
+
+

+
+
diff --git a/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/popups/opener-yes-openee-no-port.sub.https.html.headers b/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/popups/opener-yes-openee-no-port.sub.https.html.headers
new file mode 100644
index 0000000000..79a20f30fc
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/popups/opener-yes-openee-no-port.sub.https.html.headers
@@ -0,0 +1 @@
+Origin-Agent-Cluster: ?1
diff --git a/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/popups/opener-yes-openee-no-same.sub.https.html b/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/popups/opener-yes-openee-no-same.sub.https.html
new file mode 100644
index 0000000000..562ab40c68
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/popups/opener-yes-openee-no-same.sub.https.html
@@ -0,0 +1,27 @@
+
+
+Opener is origin-keyed, openee is site-keyed, openee is same-origin to the opener
+
+
+
+

+
+
diff --git a/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/popups/opener-yes-openee-no-same.sub.https.html.headers b/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/popups/opener-yes-openee-no-same.sub.https.html.headers
new file mode 100644
index 0000000000..79a20f30fc
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/popups/opener-yes-openee-no-same.sub.https.html.headers
@@ -0,0 +1 @@
+Origin-Agent-Cluster: ?1
diff --git a/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/popups/opener-yes-openee-no-subdomain.sub.https.html b/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/popups/opener-yes-openee-no-subdomain.sub.https.html
new file mode 100644
index 0000000000..d7d4791459
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/popups/opener-yes-openee-no-subdomain.sub.https.html
@@ -0,0 +1,28 @@
+
+
+Opener is origin-keyed, openee is site-keyed, openee is a subdomain of the opener
+
+
+
+

+
+
diff --git a/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/popups/opener-yes-openee-no-subdomain.sub.https.html.headers b/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/popups/opener-yes-openee-no-subdomain.sub.https.html.headers
new file mode 100644
index 0000000000..79a20f30fc
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/popups/opener-yes-openee-no-subdomain.sub.https.html.headers
@@ -0,0 +1 @@
+Origin-Agent-Cluster: ?1
diff --git a/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/popups/opener-yes-openee-yes-port.sub.https.html b/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/popups/opener-yes-openee-yes-port.sub.https.html
new file mode 100644
index 0000000000..32a5066d2e
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/popups/opener-yes-openee-yes-port.sub.https.html
@@ -0,0 +1,28 @@
+
+
+Opener is origin-keyed, openee is origin-keyed, openee is different-origin to the opener because of a port mismatch
+
+
+
+

+
+
diff --git a/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/popups/opener-yes-openee-yes-port.sub.https.html.headers b/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/popups/opener-yes-openee-yes-port.sub.https.html.headers
new file mode 100644
index 0000000000..79a20f30fc
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/popups/opener-yes-openee-yes-port.sub.https.html.headers
@@ -0,0 +1 @@
+Origin-Agent-Cluster: ?1
diff --git a/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/popups/opener-yes-openee-yes-same.sub.https.html b/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/popups/opener-yes-openee-yes-same.sub.https.html
new file mode 100644
index 0000000000..a85decac3c
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/popups/opener-yes-openee-yes-same.sub.https.html
@@ -0,0 +1,27 @@
+
+
+Opener is origin-keyed, openee is origin-keyed, openee is same-origin to the opener
+
+
+
+

+
+
diff --git a/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/popups/opener-yes-openee-yes-same.sub.https.html.headers b/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/popups/opener-yes-openee-yes-same.sub.https.html.headers
new file mode 100644
index 0000000000..79a20f30fc
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/popups/opener-yes-openee-yes-same.sub.https.html.headers
@@ -0,0 +1 @@
+Origin-Agent-Cluster: ?1
diff --git a/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/popups/opener-yes-openee-yes-subdomain.sub.https.html b/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/popups/opener-yes-openee-yes-subdomain.sub.https.html
new file mode 100644
index 0000000000..148b39af23
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/popups/opener-yes-openee-yes-subdomain.sub.https.html
@@ -0,0 +1,28 @@
+
+
+Opener is origin-keyed, openee is origin-keyed, openee is a subdomain of the opener
+
+
+
+

+
+
diff --git a/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/popups/opener-yes-openee-yes-subdomain.sub.https.html.headers b/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/popups/opener-yes-openee-yes-subdomain.sub.https.html.headers
new file mode 100644
index 0000000000..79a20f30fc
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/popups/opener-yes-openee-yes-subdomain.sub.https.html.headers
@@ -0,0 +1 @@
+Origin-Agent-Cluster: ?1
diff --git a/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/regression-1399759.https.sub.html b/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/regression-1399759.https.sub.html
new file mode 100644
index 0000000000..d0b09f335d
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/regression-1399759.https.sub.html
@@ -0,0 +1,100 @@
+
+
+
+
+
+Origin-Isolation after navigating about:blank.
+
+
+
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/removing-iframes.sub.https.html b/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/removing-iframes.sub.https.html
new file mode 100644
index 0000000000..b83aa9f5be
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/removing-iframes.sub.https.html
@@ -0,0 +1,46 @@
+
+
+A site-keyed child at a given origin causes future children to also be site-keyed even after the iframe is removed
+
+
+
+

+
+
diff --git a/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/removing-iframes.sub.https.html.headers b/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/removing-iframes.sub.https.html.headers
new file mode 100644
index 0000000000..79a20f30fc
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/removing-iframes.sub.https.html.headers
@@ -0,0 +1 @@
+Origin-Agent-Cluster: ?1
diff --git a/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/resources/README.md b/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/resources/README.md
new file mode 100644
index 0000000000..9292fe3894
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/resources/README.md
@@ -0,0 +1,6 @@
+Why are there `.headers` files here for the `.mjs` scripts?
+
+Because `../getter-special-cases/sandboxed-iframe.sub.https.html` is testing an
+opaque origin, which is cross-origin with these scripts. Since
+`
diff --git a/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/resources/coep-frame.html.headers b/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/resources/coep-frame.html.headers
new file mode 100644
index 0000000000..4e798cd9f5
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/resources/coep-frame.html.headers
@@ -0,0 +1,2 @@
+Cross-Origin-Embedder-Policy: require-corp
+Cross-Origin-Resource-Policy: cross-origin
diff --git a/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/resources/crashy-popup.sub.html b/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/resources/crashy-popup.sub.html
new file mode 100644
index 0000000000..45c8d5074d
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/resources/crashy-popup.sub.html
@@ -0,0 +1,6 @@
+
+
+This page helps exhibit a crash bug when window.open()ed (see ../popups-crash.https.html)
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/resources/crashy-popup.sub.html.headers b/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/resources/crashy-popup.sub.html.headers
new file mode 100644
index 0000000000..79a20f30fc
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/resources/crashy-popup.sub.html.headers
@@ -0,0 +1 @@
+Origin-Agent-Cluster: ?1
diff --git a/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/resources/frame.html b/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/resources/frame.html
new file mode 100644
index 0000000000..537de07b14
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/resources/frame.html
@@ -0,0 +1,12 @@
+
+
+A frame included by a test page
+
+
diff --git a/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/resources/frame.html.headers b/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/resources/frame.html.headers
new file mode 100644
index 0000000000..79a20f30fc
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/resources/frame.html.headers
@@ -0,0 +1 @@
+Origin-Agent-Cluster: ?1
diff --git a/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/resources/helpers.mjs b/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/resources/helpers.mjs
new file mode 100644
index 0000000000..6bad76e3d9
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/origin/origin-keyed-agent-clusters/resources/helpers.mjs
@@ -0,0 +1,390 @@
+/**
+ * Inserts an iframe usable for origin-keyed agent cluster testing, and returns
+ * a promise fulfilled when the iframe is loaded and its document.domain is set.
+ * The iframe will point to the send-oac-header.py file, on the  designated
+ * host.
+ * @param {string} host - The host used to calculate the iframe's src=""
+ * @param {string=} header - The value of the Origin-Agent-Cluster header that
+ *   the iframe will set. Omit this to set no header.
+ * @param {object=} options - Rarely-used options.
+ * @param {boolean=} options.redirectFirst - Whether to do a 302 redirect first
+ *   before arriving at the page that sets the header. The redirecting page will
+ *   not set the Origin-Agent-Cluster header.
+ * @returns {HTMLIFrameElement} The created iframe element
+ */
+export async function insertIframe(host, header, { redirectFirst = false } = {}) {
+  const iframe = document.createElement("iframe");
+  const navigatePromise = navigateIframe(iframe, host, header, { redirectFirst });
+  document.body.append(iframe);
+  await navigatePromise;
+  await setBothDocumentDomains(iframe.contentWindow);
+  return iframe;
+}
+
+/**
+ * Navigates an iframe to a page for origin-keyed agent cluster testing, similar
+ * to insertIframe but operating on an existing iframe.
+ * @param {HTMLIFrameElement} iframeEl - The 
+    
+  
+
diff --git a/testing/web-platform/tests/html/browsers/origin/relaxing-the-same-origin-restriction/document_domain_setter_srcdoc.html b/testing/web-platform/tests/html/browsers/origin/relaxing-the-same-origin-restriction/document_domain_setter_srcdoc.html
new file mode 100644
index 0000000000..65a7f5c898
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/origin/relaxing-the-same-origin-restriction/document_domain_setter_srcdoc.html
@@ -0,0 +1,84 @@
+
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/origin/relaxing-the-same-origin-restriction/sandboxed-document_domain.html b/testing/web-platform/tests/html/browsers/origin/relaxing-the-same-origin-restriction/sandboxed-document_domain.html
new file mode 100644
index 0000000000..ae1a0ccd56
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/origin/relaxing-the-same-origin-restriction/sandboxed-document_domain.html
@@ -0,0 +1,21 @@
+
+Sandboxed document.domain
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/origin/relaxing-the-same-origin-restriction/sandboxed-document_domain.html.headers b/testing/web-platform/tests/html/browsers/origin/relaxing-the-same-origin-restriction/sandboxed-document_domain.html.headers
new file mode 100644
index 0000000000..82e8023d0b
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/origin/relaxing-the-same-origin-restriction/sandboxed-document_domain.html.headers
@@ -0,0 +1 @@
+Content-Security-Policy: sandbox allow-scripts allow-same-origin
diff --git a/testing/web-platform/tests/html/browsers/origin/relaxing-the-same-origin-restriction/support/document_domain_frame.html b/testing/web-platform/tests/html/browsers/origin/relaxing-the-same-origin-restriction/support/document_domain_frame.html
new file mode 100644
index 0000000000..61f54af359
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/origin/relaxing-the-same-origin-restriction/support/document_domain_frame.html
@@ -0,0 +1,52 @@
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/origin/relaxing-the-same-origin-restriction/support/document_domain_frame.sub.js b/testing/web-platform/tests/html/browsers/origin/relaxing-the-same-origin-restriction/support/document_domain_frame.sub.js
new file mode 100644
index 0000000000..b6631ea4f1
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/origin/relaxing-the-same-origin-restriction/support/document_domain_frame.sub.js
@@ -0,0 +1,65 @@
+/**
+ * Utilities to be used with document_domain_frame.html.
+ */
+
+/**
+ * Send a message to the frame and resolve a promise when a response is received.
+ *
+ * Supported messages:
+ *
+ * 1) { domain: something }.  Has the subframe try to set document.domain to the
+ * given value, and message back 'Done' if that succeeds or an error name if it
+ * fails.
+ *
+ * 2) 'poke-at-parent'.  Has the subframe try to synchronously attempt to access
+ * the parent's DOM, read out a string value, and message it back to the parent.
+ * Again, sends back the error name if that fails.
+ *
+ * 3) { 'poke-at-sibling': name }.  Has the subframe try to synchronously
+ * attempt to access the DOM of the sibling with the given name, read out a
+ * string value, and message it back to the parent.
+ */
+function postMessageToFrame(frame, message) {
+  return new Promise(resolve => {
+    var c = new MessageChannel();
+    c.port1.onmessage = e => {
+      resolve({ data: e.data, frame: frame })
+    };
+    frame.contentWindow.postMessage(message, '*', [c.port2]);
+  });
+}
+
+/**
+ * Create a frame that loads document_domain_frame.html and resolves a promise
+ * when the frame is loaded enough to be sending and receiving messages.
+ *
+ * If a "name" argument is provided, that name is used for the iframe, so
+ *
+ * If a "hostname" argument is provided, that hostname is used for the load, to
+ * allow testing details of the behavior when different sorts of hostnames are
+ * used.
+ */
+function createFrame(t, name, hostname) {
+  return new Promise(resolve => {
+    var i = document.createElement('iframe');
+    if (hostname) {
+      i.src = `//${hostname}:{{location[port]}}/html/browsers/origin/relaxing-the-same-origin-restriction/support/document_domain_frame.html`;
+    } else {
+      i.src = "support/document_domain_frame.html";
+    }
+    if (name) {
+      i.name = name;
+    }
+    var listener = m => {
+      if (m.source == i.contentWindow)
+        resolve(i);
+    }
+    window.addEventListener('message', listener);
+    t.add_cleanup(() => {
+      i.remove();
+      window.removeEventListener('message', listener);
+    });
+    document.body.appendChild(i);
+  });
+}
+
diff --git a/testing/web-platform/tests/html/browsers/origin/relaxing-the-same-origin-restriction/support/document_domain_setter_iframe.html b/testing/web-platform/tests/html/browsers/origin/relaxing-the-same-origin-restriction/support/document_domain_setter_iframe.html
new file mode 100644
index 0000000000..d3d5260af3
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/origin/relaxing-the-same-origin-restriction/support/document_domain_setter_iframe.html
@@ -0,0 +1,12 @@
+
+
+  
+    
+    
+    
+  
+  
+  
+
diff --git a/testing/web-platform/tests/html/browsers/sandboxing/inner-iframe.html b/testing/web-platform/tests/html/browsers/sandboxing/inner-iframe.html
new file mode 100644
index 0000000000..229f6b3d85
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/sandboxing/inner-iframe.html
@@ -0,0 +1,13 @@
+
+
+  
+  
+  
+  
+    
foo

+  
+
diff --git a/testing/web-platform/tests/html/browsers/sandboxing/noscript-iframe.html b/testing/web-platform/tests/html/browsers/sandboxing/noscript-iframe.html
new file mode 100644
index 0000000000..677b5fc83a
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/sandboxing/noscript-iframe.html
@@ -0,0 +1,3 @@
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/sandboxing/popup-from-initial-empty-sandboxed-document.window.js b/testing/web-platform/tests/html/browsers/sandboxing/popup-from-initial-empty-sandboxed-document.window.js
new file mode 100644
index 0000000000..1ae4fad0cb
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/sandboxing/popup-from-initial-empty-sandboxed-document.window.js
@@ -0,0 +1,46 @@
+// META: timeout=long
+// META: script=/common/utils.js
+// META: script=/common/dispatcher/dispatcher.js
+
+// Regression test for: https://crbug.com/1256822.
+//
+// From a sandboxed iframe allowing popups, scripts, and same-origin. Open a
+// popup using the WindowProxy of a new iframe that is still on the initial
+// empty document. Check that the sandbox flags are properly inherited.
+
+// Return true if the execution context is sandboxed.
+const isSandboxed = () => {
+  try {
+    // Setting document.domain in sandboxed document throw errors.
+    document.domain = document.domain;
+    return false;
+  } catch (error) {
+    return true;
+  }
+}
+
+promise_test(async test => {
+  // 1. Create a sandboxed iframe, allowing popups, same-origin and scripts.
+  const iframe_token = token();
+  const iframe_document = new RemoteContext(iframe_token);
+  const iframe_url = remoteExecutorUrl(iframe_token);
+  const iframe = document.createElement("iframe");
+  iframe.sandbox = "allow-same-origin allow-scripts allow-popups";
+  iframe.src = iframe_url;
+  document.body.appendChild(iframe);
+  assert_true(await iframe_document.execute_script(isSandboxed),
+    "iframe is sandboxed");
+
+  // 2. From the sandboxed iframe, create an empty iframe, and open a popup
+  //    using it's WindowProxy. The popup must inherit sandbox flags.
+  const popup_token = token();
+  const popup_document = new RemoteContext(popup_token);
+  const popup_url = remoteExecutorUrl(popup_token);
+  iframe_document.execute_script((popup_url) => {
+    let iframe = document.createElement("iframe");
+    iframe.name = "iframe_name";
+    document.body.appendChild(iframe);
+    iframe_name.open(popup_url);
+  }, [popup_url.href]);
+  assert_true(await popup_document.execute_script(isSandboxed), "popup is sandboxed");
+});
diff --git a/testing/web-platform/tests/html/browsers/sandboxing/resources/check-sandbox-flags.html b/testing/web-platform/tests/html/browsers/sandboxing/resources/check-sandbox-flags.html
new file mode 100644
index 0000000000..0dc95315f1
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/sandboxing/resources/check-sandbox-flags.html
@@ -0,0 +1,8 @@
+
diff --git a/testing/web-platform/tests/html/browsers/sandboxing/resources/document-open.html b/testing/web-platform/tests/html/browsers/sandboxing/resources/document-open.html
new file mode 100644
index 0000000000..136c494d5a
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/sandboxing/resources/document-open.html
@@ -0,0 +1,14 @@
+
diff --git a/testing/web-platform/tests/html/browsers/sandboxing/resources/execute-postmessage.html b/testing/web-platform/tests/html/browsers/sandboxing/resources/execute-postmessage.html
new file mode 100644
index 0000000000..89bd268f9c
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/sandboxing/resources/execute-postmessage.html
@@ -0,0 +1,5 @@
+
diff --git a/testing/web-platform/tests/html/browsers/sandboxing/resources/post-done-to-opener.html b/testing/web-platform/tests/html/browsers/sandboxing/resources/post-done-to-opener.html
new file mode 100644
index 0000000000..b47f0f274e
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/sandboxing/resources/post-done-to-opener.html
@@ -0,0 +1,3 @@
+
diff --git a/testing/web-platform/tests/html/browsers/sandboxing/resources/sandbox-inherited-from-initiator-response-helper.html b/testing/web-platform/tests/html/browsers/sandboxing/resources/sandbox-inherited-from-initiator-response-helper.html
new file mode 100644
index 0000000000..29c7f12441
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/sandboxing/resources/sandbox-inherited-from-initiator-response-helper.html
@@ -0,0 +1,15 @@
+
diff --git a/testing/web-platform/tests/html/browsers/sandboxing/resources/sandbox-inherited-from-initiator-response-helper.html.headers b/testing/web-platform/tests/html/browsers/sandboxing/resources/sandbox-inherited-from-initiator-response-helper.html.headers
new file mode 100644
index 0000000000..82e8023d0b
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/sandboxing/resources/sandbox-inherited-from-initiator-response-helper.html.headers
@@ -0,0 +1 @@
+Content-Security-Policy: sandbox allow-scripts allow-same-origin
diff --git a/testing/web-platform/tests/html/browsers/sandboxing/resources/sandbox-javascript-window-open.html b/testing/web-platform/tests/html/browsers/sandboxing/resources/sandbox-javascript-window-open.html
new file mode 100644
index 0000000000..909956a54f
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/sandboxing/resources/sandbox-javascript-window-open.html
@@ -0,0 +1,18 @@
+
diff --git a/testing/web-platform/tests/html/browsers/sandboxing/sandbox-allow-same-origin.html b/testing/web-platform/tests/html/browsers/sandboxing/sandbox-allow-same-origin.html
new file mode 100644
index 0000000000..d6b3b099f2
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/sandboxing/sandbox-allow-same-origin.html
@@ -0,0 +1,30 @@
+
+
+  
+    DOM access in sandbox="allow-same-origin" iframe
+    
+    
+    
+    
+  
+
+  
+    
DOM access in sandbox="allow-same-origin" iframe

+    
+
+    
+
+    

+  
+
diff --git a/testing/web-platform/tests/html/browsers/sandboxing/sandbox-allow-scripts.html b/testing/web-platform/tests/html/browsers/sandboxing/sandbox-allow-scripts.html
new file mode 100644
index 0000000000..6cf3f5a4a8
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/sandboxing/sandbox-allow-scripts.html
@@ -0,0 +1,29 @@
+
+
+  
+    Script execution in sandbox="allow-scripts" iframe
+    
+    
+    
+    
+  
+
+  
+    
Script execution in sandbox="allow-scripts" iframe

+    
+
+    
+
+    

+  
+
diff --git a/testing/web-platform/tests/html/browsers/sandboxing/sandbox-disallow-popups.html b/testing/web-platform/tests/html/browsers/sandboxing/sandbox-disallow-popups.html
new file mode 100644
index 0000000000..8e4b34eb8b
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/sandboxing/sandbox-disallow-popups.html
@@ -0,0 +1,39 @@
+
+
+window.open in sandbox iframe
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/sandboxing/sandbox-disallow-same-origin.html b/testing/web-platform/tests/html/browsers/sandboxing/sandbox-disallow-same-origin.html
new file mode 100644
index 0000000000..0dae0137ac
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/sandboxing/sandbox-disallow-same-origin.html
@@ -0,0 +1,35 @@
+
+
+  
+    Access to sandbox iframe
+    
+    
+    
+    
+    
+  
+
+  
+    
Access to sandbox iframe

+    
+
+    
+  
+
+    

+
diff --git a/testing/web-platform/tests/html/browsers/sandboxing/sandbox-disallow-scripts-via-unsandboxed-popup.tentative.html b/testing/web-platform/tests/html/browsers/sandboxing/sandbox-disallow-scripts-via-unsandboxed-popup.tentative.html
new file mode 100644
index 0000000000..3c8c0b346a
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/sandboxing/sandbox-disallow-scripts-via-unsandboxed-popup.tentative.html
@@ -0,0 +1,33 @@
+
+
+
+
+  
+
diff --git a/testing/web-platform/tests/html/browsers/sandboxing/sandbox-disallow-scripts.html b/testing/web-platform/tests/html/browsers/sandboxing/sandbox-disallow-scripts.html
new file mode 100644
index 0000000000..1bc116ada4
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/sandboxing/sandbox-disallow-scripts.html
@@ -0,0 +1,29 @@
+
+
+  
+    Script execution in sandbox iframe
+    
+    
+    
+    
+  
+
+  
+    
Script execution in sandbox iframe

+    
+
+    
+
+    

+  
+
diff --git a/testing/web-platform/tests/html/browsers/sandboxing/sandbox-document-open-mutation.window.js b/testing/web-platform/tests/html/browsers/sandboxing/sandbox-document-open-mutation.window.js
new file mode 100644
index 0000000000..713ca612c5
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/sandboxing/sandbox-document-open-mutation.window.js
@@ -0,0 +1,37 @@
+// Return whether the current context is sandboxed or not. The implementation do
+// not matter much, but might have to change over time depending on what side
+// effect sandbox flag have. Feel free to update as needed.
+const is_sandboxed = () => {
+  try {
+    document.domain = document.domain;
+    return "not sandboxed";
+  } catch (error) {
+    return "sandboxed";
+  }
+};
+
+promise_test(async test => {
+  const message = new Promise(r => window.addEventListener("message", r));
+
+  const iframe_unsandboxed = document.createElement("iframe");
+  document.body.appendChild(iframe_unsandboxed);
+
+  const iframe_sandboxed = document.createElement("iframe");
+  iframe_sandboxed.sandbox = "allow-same-origin allow-scripts";
+  document.body.appendChild(iframe_sandboxed);
+
+  iframe_sandboxed.srcdoc = `
+    
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/sandboxing/sandbox-inherited-from-initiator-frame.html b/testing/web-platform/tests/html/browsers/sandboxing/sandbox-inherited-from-initiator-frame.html
new file mode 100644
index 0000000000..ab87fce5e0
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/sandboxing/sandbox-inherited-from-initiator-frame.html
@@ -0,0 +1,64 @@
+
+
+Inherit sandbox flags from the initiator's frame
+
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/sandboxing/sandbox-inherited-from-initiator-response.html b/testing/web-platform/tests/html/browsers/sandboxing/sandbox-inherited-from-initiator-response.html
new file mode 100644
index 0000000000..638f1ba783
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/sandboxing/sandbox-inherited-from-initiator-response.html
@@ -0,0 +1,46 @@
+
+
+Inherit sandbox flags from the initiator's response
+
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/sandboxing/sandbox-inherited-from-required-csp.html b/testing/web-platform/tests/html/browsers/sandboxing/sandbox-inherited-from-required-csp.html
new file mode 100644
index 0000000000..04f485cc66
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/sandboxing/sandbox-inherited-from-required-csp.html
@@ -0,0 +1,154 @@
+
+
+Inherit sandbox from CSP embedded enforcement
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/sandboxing/sandbox-initial-empty-document-toward-same-origin.html b/testing/web-platform/tests/html/browsers/sandboxing/sandbox-initial-empty-document-toward-same-origin.html
new file mode 100644
index 0000000000..d1306c9703
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/sandboxing/sandbox-initial-empty-document-toward-same-origin.html
@@ -0,0 +1,30 @@
+
+
+
+  Check sandbox-flags inheritance in case of javascript window reuse.
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/sandboxing/sandbox-javascript-window-open.html b/testing/web-platform/tests/html/browsers/sandboxing/sandbox-javascript-window-open.html
new file mode 100644
index 0000000000..fd21e9bb02
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/sandboxing/sandbox-javascript-window-open.html
@@ -0,0 +1,19 @@
+
+
+window.open in sandbox iframe
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/sandboxing/sandbox-navigation-timing-iframe.tentative.html b/testing/web-platform/tests/html/browsers/sandboxing/sandbox-navigation-timing-iframe.tentative.html
new file mode 100644
index 0000000000..43726e7720
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/sandboxing/sandbox-navigation-timing-iframe.tentative.html
@@ -0,0 +1,16 @@
+
+
+
\ No newline at end of file
diff --git a/testing/web-platform/tests/html/browsers/sandboxing/sandbox-navigation-timing.tentative.html b/testing/web-platform/tests/html/browsers/sandboxing/sandbox-navigation-timing.tentative.html
new file mode 100644
index 0000000000..686f1c0c9f
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/sandboxing/sandbox-navigation-timing.tentative.html
@@ -0,0 +1,29 @@
+
+
+Sandbox Navigation Timing
+
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/sandboxing/sandbox-new-execution-context-iframe.html b/testing/web-platform/tests/html/browsers/sandboxing/sandbox-new-execution-context-iframe.html
new file mode 100644
index 0000000000..801e78f9c0
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/sandboxing/sandbox-new-execution-context-iframe.html
@@ -0,0 +1,5 @@
+
+  
+
diff --git a/testing/web-platform/tests/html/browsers/sandboxing/sandbox-new-execution-context.html b/testing/web-platform/tests/html/browsers/sandboxing/sandbox-new-execution-context.html
new file mode 100644
index 0000000000..dc1953aee6
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/sandboxing/sandbox-new-execution-context.html
@@ -0,0 +1,39 @@
+
+
+  
+    Reuse of iframe about:blank document execution context
+    
+    
+    
+    
+  
+
+  
+    
Reuse of iframe about:blank document execution context in sandbox="allow-scripts" iframe

+    
+    

+  
+
diff --git a/testing/web-platform/tests/html/browsers/sandboxing/sandbox-parse-noscript-ref.html b/testing/web-platform/tests/html/browsers/sandboxing/sandbox-parse-noscript-ref.html
new file mode 100644
index 0000000000..9cf92768f7
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/sandboxing/sandbox-parse-noscript-ref.html
@@ -0,0 +1,6 @@
+
+
+noscript parsing when sandbox disables scripting
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/sandboxing/sandbox-parse-noscript.html b/testing/web-platform/tests/html/browsers/sandboxing/sandbox-parse-noscript.html
new file mode 100644
index 0000000000..bb7ced0a14
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/sandboxing/sandbox-parse-noscript.html
@@ -0,0 +1,7 @@
+
+
+noscript parsing when sandbox disables scripting
+
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/sandboxing/sandbox-window-open-srcdoc.html b/testing/web-platform/tests/html/browsers/sandboxing/sandbox-window-open-srcdoc.html
new file mode 100644
index 0000000000..6fbff6df82
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/sandboxing/sandbox-window-open-srcdoc.html
@@ -0,0 +1,52 @@
+
+
+window.open("about:srcdoc") from a sandboxed iframe
+
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/sandboxing/window-open-blank-from-different-initiator.html b/testing/web-platform/tests/html/browsers/sandboxing/window-open-blank-from-different-initiator.html
new file mode 100644
index 0000000000..91817c3db4
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/sandboxing/window-open-blank-from-different-initiator.html
@@ -0,0 +1,90 @@
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/the-window-object/BarProp.window.js b/testing/web-platform/tests/html/browsers/the-window-object/BarProp.window.js
new file mode 100644
index 0000000000..27a357cab5
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/the-window-object/BarProp.window.js
@@ -0,0 +1,59 @@
+function assert_barProps(barPropObjects, visible) {
+  let lastBarProp = undefined;
+  for (const currentBarProp of barPropObjects) {
+    assert_not_equals(currentBarProp, lastBarProp, "BarBrop objects of different properties are identical");
+    assert_equals(currentBarProp.visible, visible, "a BarProp's visible is wrong");
+    lastBarProp = currentBarProp;
+  }
+}
+
+function assert_identical_barProps(barProps, w, oldBarPropObjects, visible) {
+  barProps.map(val => w[val]).map((val, index) => {
+    assert_equals(val, oldBarPropObjects[index], "BarProp identity not preserved");
+  });
+  assert_barProps(oldBarPropObjects, visible);
+}
+
+async_test(t => {
+  const frame = document.body.appendChild(document.createElement("iframe")),
+        frameW = frame.contentWindow,
+        barProps = ["locationbar", "menubar", "personalbar", "scrollbars", "statusbar", "toolbar"],
+        barPropObjects = barProps.map(val => frameW[val]);
+
+  assert_barProps(barPropObjects, true);
+  frame.remove();
+  assert_identical_barProps(barProps, frameW, barPropObjects, false);
+  t.step_timeout(() => {
+    assert_identical_barProps(barProps, frameW, barPropObjects, false);
+    t.done();
+  }, 0);
+}, "BarBrop objects of a nested Window");
+
+async_test(t => {
+  const openee = window.open("/common/blank.html"),
+        barProps = ["locationbar", "menubar", "personalbar", "scrollbars", "statusbar", "toolbar"],
+        barPropObjects = barProps.map(val => openee[val]);
+
+  // This is used to demonstrate that the Document is replaced while the global object (not the
+  // global this object) stays the same
+  openee.tiedToGlobalObject = openee.document;
+
+  assert_barProps(barPropObjects, true);
+  openee.onload = t.step_func(() => {
+    assert_own_property(openee, "tiedToGlobalObject");
+    assert_not_equals(openee.tiedToGlobalObject, openee.document);
+
+    assert_identical_barProps(barProps, openee, barPropObjects, true);
+
+    openee.onunload = t.step_func(() => {
+      assert_identical_barProps(barProps, openee, barPropObjects, true);
+      t.step_timeout(() => {
+        assert_identical_barProps(barProps, openee, barPropObjects, false);
+        t.done();
+      }, 0);
+    });
+
+    openee.close();
+    assert_identical_barProps(barProps, openee, barPropObjects, true);
+  });
+}, "BarProp objects of an auxiliary Window");
diff --git a/testing/web-platform/tests/html/browsers/the-window-object/Document-defaultView.html b/testing/web-platform/tests/html/browsers/the-window-object/Document-defaultView.html
new file mode 100644
index 0000000000..dbc75d30b2
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/the-window-object/Document-defaultView.html
@@ -0,0 +1,38 @@
+
+
+Document#defaultView
+
+
+

+
diff --git a/testing/web-platform/tests/html/browsers/the-window-object/Window-document.html b/testing/web-platform/tests/html/browsers/the-window-object/Window-document.html
new file mode 100644
index 0000000000..9b27f5f7c7
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/the-window-object/Window-document.html
@@ -0,0 +1,25 @@
+
+
+Window#document
+
+
+

+
diff --git a/testing/web-platform/tests/html/browsers/the-window-object/accessing-other-browsing-contexts/indexed-browsing-contexts-01.html b/testing/web-platform/tests/html/browsers/the-window-object/accessing-other-browsing-contexts/indexed-browsing-contexts-01.html
new file mode 100644
index 0000000000..9710d15fb2
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/the-window-object/accessing-other-browsing-contexts/indexed-browsing-contexts-01.html
@@ -0,0 +1,47 @@
+
+
+HTML Test: the browsing contexts must be sorted in the order that their containers were inserted into the Document
+
+
+
+
+

+
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/the-window-object/accessing-other-browsing-contexts/indexed-browsing-contexts-02.html b/testing/web-platform/tests/html/browsers/the-window-object/accessing-other-browsing-contexts/indexed-browsing-contexts-02.html
new file mode 100644
index 0000000000..d09c944fd8
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/the-window-object/accessing-other-browsing-contexts/indexed-browsing-contexts-02.html
@@ -0,0 +1,62 @@
+
+
+  
+  HTML Test: the browsing contexts created by various container elements
+  
+  
+  
+  
+
+
+  

+  

+    
+    
+    
+    
+  

+
diff --git a/testing/web-platform/tests/html/browsers/the-window-object/accessing-other-browsing-contexts/indexed-browsing-contexts-03.html b/testing/web-platform/tests/html/browsers/the-window-object/accessing-other-browsing-contexts/indexed-browsing-contexts-03.html
new file mode 100644
index 0000000000..1548891175
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/the-window-object/accessing-other-browsing-contexts/indexed-browsing-contexts-03.html
@@ -0,0 +1,30 @@
+
+
+  
+  HTML Test: indexed property of a Window object
+  
+  
+  
+  
+
+
+  

+  

+    

+    
+    
+  

+
diff --git a/testing/web-platform/tests/html/browsers/the-window-object/accessing-other-browsing-contexts/iterator.html b/testing/web-platform/tests/html/browsers/the-window-object/accessing-other-browsing-contexts/iterator.html
new file mode 100644
index 0000000000..76dc7dbae6
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/the-window-object/accessing-other-browsing-contexts/iterator.html
@@ -0,0 +1,11 @@
+
+
+window[@@iterator]
+
+
+

+
diff --git a/testing/web-platform/tests/html/browsers/the-window-object/accessing-other-browsing-contexts/test1.html b/testing/web-platform/tests/html/browsers/the-window-object/accessing-other-browsing-contexts/test1.html
new file mode 100644
index 0000000000..f85f90f7c6
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/the-window-object/accessing-other-browsing-contexts/test1.html
@@ -0,0 +1,12 @@
+
+
+HTML Test: child browsing contexts created by iframe elements
+
+
+  
+    
+  
+  
+

+      
+    

diff --git a/testing/web-platform/tests/html/browsers/the-window-object/accessing-other-browsing-contexts/test2.html b/testing/web-platform/tests/html/browsers/the-window-object/accessing-other-browsing-contexts/test2.html
new file mode 100644
index 0000000000..d6a16647fe
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/the-window-object/accessing-other-browsing-contexts/test2.html
@@ -0,0 +1,6 @@
+
+
+HTML Test: child browsing contexts created by object and embed elements
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/the-window-object/accessing-other-browsing-contexts/test3.html b/testing/web-platform/tests/html/browsers/the-window-object/accessing-other-browsing-contexts/test3.html
new file mode 100644
index 0000000000..a62fdbaae7
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/the-window-object/accessing-other-browsing-contexts/test3.html
@@ -0,0 +1,8 @@
+
+
+HTML Test: child browsing contexts created by frame elements
+
+
+  
+  
+
diff --git a/testing/web-platform/tests/html/browsers/the-window-object/accessing-other-browsing-contexts/window_length.html b/testing/web-platform/tests/html/browsers/the-window-object/accessing-other-browsing-contexts/window_length.html
new file mode 100644
index 0000000000..c9559b531a
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/the-window-object/accessing-other-browsing-contexts/window_length.html
@@ -0,0 +1,51 @@
+
+window.length
+
+
+

+
diff --git a/testing/web-platform/tests/html/browsers/the-window-object/close-method.window.js b/testing/web-platform/tests/html/browsers/the-window-object/close-method.window.js
new file mode 100644
index 0000000000..0288f9cab8
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/the-window-object/close-method.window.js
@@ -0,0 +1,39 @@
+function assert_closed_opener(w, closed, opener) {
+  assert_equals(w.closed, closed);
+  assert_equals(w.opener, opener);
+}
+
+async_test(t => {
+  const openee = window.open();
+  assert_closed_opener(openee, false, self);
+  openee.onunload = t.step_func(() => {
+    assert_closed_opener(openee, true, self);
+    t.step_timeout(() => {
+      assert_closed_opener(openee, true, null);
+      t.done();
+    }, 0);
+  });
+  openee.close();
+  assert_closed_opener(openee, true, self);
+}, "window.close() queues a task to discard, but window.closed knows immediately");
+
+async_test(t => {
+  const openee = window.open("", "greatname");
+  assert_closed_opener(openee, false, self);
+  openee.close();
+  assert_closed_opener(openee, true, self);
+  const openee2 = window.open("", "greatname");
+  assert_not_equals(openee, openee2);
+  assert_closed_opener(openee, true, self); // Ensure second window.open() call was synchronous
+  openee2.onunload = t.step_func(() => {
+    assert_closed_opener(openee2, true, self);
+    t.step_timeout(() => {
+      assert_closed_opener(openee, true, null);
+      assert_closed_opener(openee2, true, null);
+      t.done();
+    }, 0);
+  });
+  openee2.close();
+  assert_closed_opener(openee, true, self); // Ensure second close() call was synchronous
+  assert_closed_opener(openee2, true, self);
+}, "window.close() affects name targeting immediately");
diff --git a/testing/web-platform/tests/html/browsers/the-window-object/closed-attribute.window.js b/testing/web-platform/tests/html/browsers/the-window-object/closed-attribute.window.js
new file mode 100644
index 0000000000..88a3beba6f
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/the-window-object/closed-attribute.window.js
@@ -0,0 +1,69 @@
+// META: script=/common/get-host-info.sub.js
+
+function closedTest(newWindow, closeNewWindowsBrowsingContext) {
+  assert_equals(newWindow.closed, false);
+  closeNewWindowsBrowsingContext();
+  assert_equals(newWindow.closed, true);
+}
+
+test(() => {
+  const frame = document.body.appendChild(document.createElement("iframe"));
+  closedTest(frame.contentWindow, () => frame.remove());
+}, "closed and same-origin nested browsing context");
+
+test(() => {
+  const openee = window.open();
+  closedTest(openee, () => openee.close());
+
+  // close() is a no-op once "is closing" is set
+  openee.close();
+  assert_equals(openee.closed, true);
+}, "closed/close() and same-origin auxiliary browsing context");
+
+const support = new URL("support/closed.html", location.href).pathname;
+[
+  {
+    type: "cross-origin",
+    url: `${get_host_info().HTTP_REMOTE_ORIGIN}${support}`
+  },
+  {
+    type: "cross-site",
+    url: `${get_host_info().HTTP_NOTSAMESITE_ORIGIN}${support}`
+  }
+].forEach(val => {
+  async_test(t => {
+    const frame = document.createElement("iframe"),
+          ident = `${val.type}-nested-bc`;
+    frame.src = `${val.url}?window=parent&ident=${ident}`;
+    const listener = t.step_func(e => {
+      if (e.data === ident) {
+        closedTest(frame.contentWindow, () => frame.remove());
+        self.removeEventListener("message", listener);
+        t.done();
+      }
+    });
+    // Use a message event rather than onload for consistency with auxiliary browsing contexts.
+    self.addEventListener("message", listener);
+    document.body.append(frame);
+  }, `closed and ${val.type} nested browsing context`);
+
+  async_test(t => {
+    const ident = `${val.type}-auxiliary-bc`,
+          support = new URL("support/closed.html", location.href).pathname,
+          openee = window.open(`${val.url}?window=opener&ident=${ident}`),
+          listener = t.step_func(e => {
+      if (e.data === ident) {
+        closedTest(openee, () => openee.close());
+
+        // close() is a no-op once "is closing" is set
+        openee.close();
+        assert_equals(openee.closed, true);
+
+        self.removeEventListener("message", listener);
+        t.done();
+      }
+    });
+    // As there's no cross-origin onload, use a message event.
+    self.addEventListener("message", listener);
+  }, `closed/close() and ${val.type} auxiliary browsing context`);
+});
diff --git a/testing/web-platform/tests/html/browsers/the-window-object/defaultstatus.html b/testing/web-platform/tests/html/browsers/the-window-object/defaultstatus.html
new file mode 100644
index 0000000000..f683f130cd
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/the-window-object/defaultstatus.html
@@ -0,0 +1,17 @@
+
+
+window.defaultStatus and window.defaultstatus are not supported
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/the-window-object/document-attribute.window.js b/testing/web-platform/tests/html/browsers/the-window-object/document-attribute.window.js
new file mode 100644
index 0000000000..f13acdb8a3
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/the-window-object/document-attribute.window.js
@@ -0,0 +1,15 @@
+async_test(t => {
+  const frame = document.createElement("iframe");
+  frame.onload = t.step_func(() => {
+    const frameW = frame.contentWindow,
+          frameD = frame.contentDocument;
+    assert_equals(frameW.document, frameD);
+    frame.remove();
+    assert_equals(frameW.document, frameD);
+    t.step_timeout(() => {
+      assert_equals(frameW.document, frameD);
+      t.done();
+    }, 100);
+  });
+  document.body.append(frame);
+}, "Window object's document IDL attribute and discarding the browsing context");
diff --git a/testing/web-platform/tests/html/browsers/the-window-object/focus.window.js b/testing/web-platform/tests/html/browsers/the-window-object/focus.window.js
new file mode 100644
index 0000000000..6ec7feee28
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/the-window-object/focus.window.js
@@ -0,0 +1,15 @@
+async_test(t => {
+  const input = document.body.appendChild(document.createElement("input"));
+  input.onfocus = t.step_func(() => {
+    const frame = document.body.appendChild(document.createElement("iframe")),
+          frameW = frame.contentWindow;
+    frameW.onfocus = t.unreached_func();
+    frame.remove();
+    frameW.focus();
+    t.step_timeout(() => {
+      assert_equals(document.activeElement, input);
+      t.done();
+    }, 100);
+  });
+  input.focus();
+});
diff --git a/testing/web-platform/tests/html/browsers/the-window-object/garbage-collection-and-browsing-contexts/discard_iframe_history_1-1.html b/testing/web-platform/tests/html/browsers/the-window-object/garbage-collection-and-browsing-contexts/discard_iframe_history_1-1.html
new file mode 100644
index 0000000000..217608e46e
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/the-window-object/garbage-collection-and-browsing-contexts/discard_iframe_history_1-1.html
@@ -0,0 +1,20 @@
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/the-window-object/garbage-collection-and-browsing-contexts/discard_iframe_history_1-2.html b/testing/web-platform/tests/html/browsers/the-window-object/garbage-collection-and-browsing-contexts/discard_iframe_history_1-2.html
new file mode 100644
index 0000000000..b43598f2cd
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/the-window-object/garbage-collection-and-browsing-contexts/discard_iframe_history_1-2.html
@@ -0,0 +1,2 @@
+
+Filler text
diff --git a/testing/web-platform/tests/html/browsers/the-window-object/garbage-collection-and-browsing-contexts/discard_iframe_history_1.html b/testing/web-platform/tests/html/browsers/the-window-object/garbage-collection-and-browsing-contexts/discard_iframe_history_1.html
new file mode 100644
index 0000000000..4d1e473fc0
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/the-window-object/garbage-collection-and-browsing-contexts/discard_iframe_history_1.html
@@ -0,0 +1,10 @@
+
+Removing iframe from document removes it from history
+
+
+

+
+
diff --git a/testing/web-platform/tests/html/browsers/the-window-object/garbage-collection-and-browsing-contexts/discard_iframe_history_2-1.html b/testing/web-platform/tests/html/browsers/the-window-object/garbage-collection-and-browsing-contexts/discard_iframe_history_2-1.html
new file mode 100644
index 0000000000..61e5891ebd
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/the-window-object/garbage-collection-and-browsing-contexts/discard_iframe_history_2-1.html
@@ -0,0 +1,22 @@
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/the-window-object/garbage-collection-and-browsing-contexts/discard_iframe_history_2.html b/testing/web-platform/tests/html/browsers/the-window-object/garbage-collection-and-browsing-contexts/discard_iframe_history_2.html
new file mode 100644
index 0000000000..89d0fb4c64
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/the-window-object/garbage-collection-and-browsing-contexts/discard_iframe_history_2.html
@@ -0,0 +1,10 @@
+
+Removing iframe from document via innerHTML removes it from history
+
+
+

+
+
diff --git a/testing/web-platform/tests/html/browsers/the-window-object/garbage-collection-and-browsing-contexts/discard_iframe_history_3-1.html b/testing/web-platform/tests/html/browsers/the-window-object/garbage-collection-and-browsing-contexts/discard_iframe_history_3-1.html
new file mode 100644
index 0000000000..de3f075d64
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/the-window-object/garbage-collection-and-browsing-contexts/discard_iframe_history_3-1.html
@@ -0,0 +1,21 @@
+
+
diff --git a/testing/web-platform/tests/html/browsers/the-window-object/garbage-collection-and-browsing-contexts/discard_iframe_history_3-2.html b/testing/web-platform/tests/html/browsers/the-window-object/garbage-collection-and-browsing-contexts/discard_iframe_history_3-2.html
new file mode 100644
index 0000000000..95f9fce5d8
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/the-window-object/garbage-collection-and-browsing-contexts/discard_iframe_history_3-2.html
@@ -0,0 +1,4 @@
+Click me
+
diff --git a/testing/web-platform/tests/html/browsers/the-window-object/garbage-collection-and-browsing-contexts/discard_iframe_history_3-3.html b/testing/web-platform/tests/html/browsers/the-window-object/garbage-collection-and-browsing-contexts/discard_iframe_history_3-3.html
new file mode 100644
index 0000000000..4672b0ec30
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/the-window-object/garbage-collection-and-browsing-contexts/discard_iframe_history_3-3.html
@@ -0,0 +1,4 @@
+
+
diff --git a/testing/web-platform/tests/html/browsers/the-window-object/garbage-collection-and-browsing-contexts/discard_iframe_history_3.html b/testing/web-platform/tests/html/browsers/the-window-object/garbage-collection-and-browsing-contexts/discard_iframe_history_3.html
new file mode 100644
index 0000000000..38dbdbd0fa
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/the-window-object/garbage-collection-and-browsing-contexts/discard_iframe_history_3.html
@@ -0,0 +1,9 @@
+
+Removing iframe from document removes it from history
+
+
+

+
diff --git a/testing/web-platform/tests/html/browsers/the-window-object/garbage-collection-and-browsing-contexts/discard_iframe_history_4-1.html b/testing/web-platform/tests/html/browsers/the-window-object/garbage-collection-and-browsing-contexts/discard_iframe_history_4-1.html
new file mode 100644
index 0000000000..1b5726cdcd
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/the-window-object/garbage-collection-and-browsing-contexts/discard_iframe_history_4-1.html
@@ -0,0 +1,21 @@
+
+
diff --git a/testing/web-platform/tests/html/browsers/the-window-object/garbage-collection-and-browsing-contexts/discard_iframe_history_4-2.html b/testing/web-platform/tests/html/browsers/the-window-object/garbage-collection-and-browsing-contexts/discard_iframe_history_4-2.html
new file mode 100644
index 0000000000..979b2b28e4
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/the-window-object/garbage-collection-and-browsing-contexts/discard_iframe_history_4-2.html
@@ -0,0 +1,4 @@
+Click me
+
diff --git a/testing/web-platform/tests/html/browsers/the-window-object/garbage-collection-and-browsing-contexts/discard_iframe_history_4-3.html b/testing/web-platform/tests/html/browsers/the-window-object/garbage-collection-and-browsing-contexts/discard_iframe_history_4-3.html
new file mode 100644
index 0000000000..b4308f439a
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/the-window-object/garbage-collection-and-browsing-contexts/discard_iframe_history_4-3.html
@@ -0,0 +1,4 @@
+
+
diff --git a/testing/web-platform/tests/html/browsers/the-window-object/garbage-collection-and-browsing-contexts/discard_iframe_history_4.html b/testing/web-platform/tests/html/browsers/the-window-object/garbage-collection-and-browsing-contexts/discard_iframe_history_4.html
new file mode 100644
index 0000000000..ffd444e3bf
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/the-window-object/garbage-collection-and-browsing-contexts/discard_iframe_history_4.html
@@ -0,0 +1,9 @@
+
+Removing iframe from document removes it from history
+
+
+

+
diff --git a/testing/web-platform/tests/html/browsers/the-window-object/garbage-collection-and-browsing-contexts/non-automated/discard_iframe_history_1-1.html b/testing/web-platform/tests/html/browsers/the-window-object/garbage-collection-and-browsing-contexts/non-automated/discard_iframe_history_1-1.html
new file mode 100644
index 0000000000..9969427989
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/the-window-object/garbage-collection-and-browsing-contexts/non-automated/discard_iframe_history_1-1.html
@@ -0,0 +1,27 @@
+
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/the-window-object/garbage-collection-and-browsing-contexts/non-automated/discard_iframe_history_1-2.html b/testing/web-platform/tests/html/browsers/the-window-object/garbage-collection-and-browsing-contexts/non-automated/discard_iframe_history_1-2.html
new file mode 100644
index 0000000000..8c3d1a9dad
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/the-window-object/garbage-collection-and-browsing-contexts/non-automated/discard_iframe_history_1-2.html
@@ -0,0 +1,2 @@
+
+
diff --git a/testing/web-platform/tests/html/browsers/the-window-object/garbage-collection-and-browsing-contexts/non-automated/discard_iframe_history_1-manual.html b/testing/web-platform/tests/html/browsers/the-window-object/garbage-collection-and-browsing-contexts/non-automated/discard_iframe_history_1-manual.html
new file mode 100644
index 0000000000..ca9dd91f2e
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/the-window-object/garbage-collection-and-browsing-contexts/non-automated/discard_iframe_history_1-manual.html
@@ -0,0 +1,10 @@
+
+Removing iframe from document removes it from history
+
+
+

+
diff --git a/testing/web-platform/tests/html/browsers/the-window-object/garbage-collection-and-browsing-contexts/non-automated/discard_iframe_history_2-1.html b/testing/web-platform/tests/html/browsers/the-window-object/garbage-collection-and-browsing-contexts/non-automated/discard_iframe_history_2-1.html
new file mode 100644
index 0000000000..bc01cae88c
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/the-window-object/garbage-collection-and-browsing-contexts/non-automated/discard_iframe_history_2-1.html
@@ -0,0 +1,19 @@
+
+
diff --git a/testing/web-platform/tests/html/browsers/the-window-object/garbage-collection-and-browsing-contexts/non-automated/discard_iframe_history_2-2.html b/testing/web-platform/tests/html/browsers/the-window-object/garbage-collection-and-browsing-contexts/non-automated/discard_iframe_history_2-2.html
new file mode 100644
index 0000000000..b25bf5f001
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/the-window-object/garbage-collection-and-browsing-contexts/non-automated/discard_iframe_history_2-2.html
@@ -0,0 +1 @@
+Click me
diff --git a/testing/web-platform/tests/html/browsers/the-window-object/garbage-collection-and-browsing-contexts/non-automated/discard_iframe_history_2-3.html b/testing/web-platform/tests/html/browsers/the-window-object/garbage-collection-and-browsing-contexts/non-automated/discard_iframe_history_2-3.html
new file mode 100644
index 0000000000..68847e9a7c
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/the-window-object/garbage-collection-and-browsing-contexts/non-automated/discard_iframe_history_2-3.html
@@ -0,0 +1 @@
+
diff --git a/testing/web-platform/tests/html/browsers/the-window-object/garbage-collection-and-browsing-contexts/non-automated/discard_iframe_history_2-manual.html b/testing/web-platform/tests/html/browsers/the-window-object/garbage-collection-and-browsing-contexts/non-automated/discard_iframe_history_2-manual.html
new file mode 100644
index 0000000000..57eaabcd0c
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/the-window-object/garbage-collection-and-browsing-contexts/non-automated/discard_iframe_history_2-manual.html
@@ -0,0 +1,10 @@
+
+Removing iframe from document removes it from history
+
+
+

+
diff --git a/testing/web-platform/tests/html/browsers/the-window-object/historical.window.js b/testing/web-platform/tests/html/browsers/the-window-object/historical.window.js
new file mode 100644
index 0000000000..653f12b464
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/the-window-object/historical.window.js
@@ -0,0 +1,4 @@
+test(() => {
+  assert_false("showModalDialog" in window)
+  assert_false("showModalDialog" in Window.prototype)
+}, "showModalDialog() has been removed from the platform")
diff --git a/testing/web-platform/tests/html/browsers/the-window-object/length-attribute.window.js b/testing/web-platform/tests/html/browsers/the-window-object/length-attribute.window.js
new file mode 100644
index 0000000000..d56e1e4692
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/the-window-object/length-attribute.window.js
@@ -0,0 +1,24 @@
+async_test(t => {
+  const frame = document.createElement("iframe");
+  frame.srcdoc = "";
+  frame.onload = t.step_func_done(() => {
+    const frameW = frame.contentWindow;
+    assert_equals(frameW.length, 2);
+    assert_not_equals(frameW.x, undefined);
+    assert_not_equals(frameW.y, undefined);
+    assert_equals(frameW.z, undefined);
+    assert_equals(frameW.x, frameW[0]);
+    assert_equals(frameW.y, frameW[1]);
+    const xFrameW = frameW.x;
+    assert_equals(xFrameW.length, 1);
+    assert_not_equals(xFrameW.z, undefined);
+    assert_equals(xFrameW.z, xFrameW[0]);
+    frame.remove();
+    assert_equals(frameW.length, 0);
+    assert_equals(frameW.x, undefined);
+    assert_equals(frameW[0], undefined);
+    assert_equals(xFrameW.length, 0);
+    assert_equals(xFrameW.z, undefined);
+  });
+  document.body.append(frame);
+}, "Window object's length IDL attribute (and named access)");
diff --git a/testing/web-platform/tests/html/browsers/the-window-object/name-attribute.window.js b/testing/web-platform/tests/html/browsers/the-window-object/name-attribute.window.js
new file mode 100644
index 0000000000..f266dd7acb
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/the-window-object/name-attribute.window.js
@@ -0,0 +1,18 @@
+test(() => {
+  const frame = document.createElement("iframe"),
+        name = "A",
+        name2 = "B";
+  frame.setAttribute("name", name);
+  document.body.append(frame);
+  const frameW = frame.contentWindow;
+  assert_equals(frameW.name, name);
+  frameW.name = name2;
+  assert_equals(frame.getAttribute("name"), name);
+  assert_equals(frameW.name, name2);
+  frame.remove();
+  assert_equals(frame.getAttribute("name"), name);
+  assert_equals(frameW.name, "");
+  frameW.name = name2;
+  assert_equals(frame.getAttribute("name"), name);
+  assert_equals(frameW.name, "");
+}, "Window object's name IDL attribute");
diff --git a/testing/web-platform/tests/html/browsers/the-window-object/named-access-on-the-window-object/cross-global-npo.html b/testing/web-platform/tests/html/browsers/the-window-object/named-access-on-the-window-object/cross-global-npo.html
new file mode 100644
index 0000000000..2acad0734c
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/the-window-object/named-access-on-the-window-object/cross-global-npo.html
@@ -0,0 +1,38 @@
+
+
+Named access across globals
+
+
+

+
diff --git a/testing/web-platform/tests/html/browsers/the-window-object/named-access-on-the-window-object/cross-global-support.html b/testing/web-platform/tests/html/browsers/the-window-object/named-access-on-the-window-object/cross-global-support.html
new file mode 100644
index 0000000000..9d7b9f8a25
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/the-window-object/named-access-on-the-window-object/cross-global-support.html
@@ -0,0 +1,4 @@
+
+
+Named access across globals: support file
+
diff --git a/testing/web-platform/tests/html/browsers/the-window-object/named-access-on-the-window-object/named-objects.html b/testing/web-platform/tests/html/browsers/the-window-object/named-access-on-the-window-object/named-objects.html
new file mode 100644
index 0000000000..d5b1789d59
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/the-window-object/named-access-on-the-window-object/named-objects.html
@@ -0,0 +1,76 @@
+
+
+HTML Test: Named access on the Window object
+
+
+
+
+

+

+  

+  
+  
+  
+  

+  
+  
+  
+
+  
+  
+  
+  
+  
+  
+  
+  
+

+
diff --git a/testing/web-platform/tests/html/browsers/the-window-object/named-access-on-the-window-object/navigated-named-objects.window.js b/testing/web-platform/tests/html/browsers/the-window-object/named-access-on-the-window-object/navigated-named-objects.window.js
new file mode 100644
index 0000000000..59d94efc99
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/the-window-object/named-access-on-the-window-object/navigated-named-objects.window.js
@@ -0,0 +1,67 @@
+// META: script=/common/get-host-info.sub.js
+
+function echoURL(content) {
+  return `/common/echo.py?content=${encodeURIComponent(content)}`;
+}
+
+function setSrc(frame, type, content) {
+  if (type === "same-origin") {
+    frame.src = echoURL(content);
+  } else if (type === "cross-site") {
+    frame.src = `${get_host_info().HTTP_NOTSAMESITE_ORIGIN}${echoURL(content)}`;
+  } else {
+    frame.srcdoc = content;
+  }
+}
+
+["srcdoc", "same-origin", "cross-site"].forEach(type => {
+  const initialType = type === "srcdoc" ? type : "same-origin";
+
+  [
+    {
+      "namedObject": "
",
+      "namedObjectLocalName": "div"
+    },
+    {
+      "namedObject": "",
+      "namedObjectLocalName": "object"
+    },
+    {
+      "namedObject": "",
+      "namedObjectLocalName": "iframe"
+    }
+  ].forEach(testData => {
+    async_test(t => {
+      const frame = document.createElement("iframe");
+      t.add_cleanup(() => frame.remove());
+      setSrc(frame, initialType, `${testData.namedObject}`);
+      frame.onload = t.step_func(() => {
+        const f = frame.contentWindow.f,
+              associatedAbc = f();
+        frame.onload = t.step_func_done(() => {
+          assert_equals(f(), associatedAbc);
+          assert_equals(associatedAbc.localName, testData.namedObjectLocalName);
+        });
+        setSrc(frame, type, "");
+      });
+      document.body.append(frame);
+    }, `Window's associated Document object is used for finding named objects (<${testData.namedObjectLocalName}> via ${type} 
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/the-window-object/named-access-on-the-window-object/window-null-names.html b/testing/web-platform/tests/html/browsers/the-window-object/named-access-on-the-window-object/window-null-names.html
new file mode 100644
index 0000000000..6801ef9d8a
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/the-window-object/named-access-on-the-window-object/window-null-names.html
@@ -0,0 +1,20 @@
+
+
+Named access with null characters
+
+
+
+
+
+
+

+
diff --git a/testing/web-platform/tests/html/browsers/the-window-object/navigate-to-about-blank-while-initial-load-pending.html b/testing/web-platform/tests/html/browsers/the-window-object/navigate-to-about-blank-while-initial-load-pending.html
new file mode 100644
index 0000000000..3a0def8ae6
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/the-window-object/navigate-to-about-blank-while-initial-load-pending.html
@@ -0,0 +1,26 @@
+
+
+Test navigating to about:blank while window.open initial load pending.
+
+
+

+
diff --git a/testing/web-platform/tests/html/browsers/the-window-object/noopener-noreferrer-BarProp.window.js b/testing/web-platform/tests/html/browsers/the-window-object/noopener-noreferrer-BarProp.window.js
new file mode 100644
index 0000000000..a75a034650
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/the-window-object/noopener-noreferrer-BarProp.window.js
@@ -0,0 +1,23 @@
+const barProps = ["locationbar", "menubar", "personalbar", "scrollbars", "statusbar", "toolbar"];
+
+test(() => {
+  for(const prop of barProps) {
+    assert_true(window[prop].visible);
+  }
+}, "All bars visible");
+
+["noopener", "noreferrer"].forEach(openerStyle => {
+  async_test(t => {
+    const channelName = "5454" + openerStyle + "34324";
+    const channel = new BroadcastChannel(channelName);
+    window.open("support/BarProp-target.html?" + channelName, "", openerStyle);
+    channel.onmessage = t.step_func_done(e => {
+      // Send message first so if asserts throw the popup is still closed
+      channel.postMessage(null);
+
+      for(const prop of barProps) {
+        assert_true(e.data[prop]);
+      }
+    });
+  }, `window.open() with ${openerStyle} should have all bars visible`);
+});
diff --git a/testing/web-platform/tests/html/browsers/the-window-object/noopener-noreferrer-sizing.window.js b/testing/web-platform/tests/html/browsers/the-window-object/noopener-noreferrer-sizing.window.js
new file mode 100644
index 0000000000..cc53ba5f2f
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/the-window-object/noopener-noreferrer-sizing.window.js
@@ -0,0 +1,17 @@
+const windowProps = ["innerWidth", "innerHeight"];
+
+["noopener", "noreferrer"].forEach(openerStyle => {
+  async_test(t => {
+    const channelName = "34342" + openerStyle + "8907";
+    const channel = new BroadcastChannel(channelName);
+    window.open("support/sizing-target.html?" + channelName, "", openerStyle);
+    channel.onmessage = t.step_func_done(e => {
+      // Send message first so if asserts throw the popup is still closed
+      channel.postMessage(null);
+
+      for(const prop of windowProps) {
+        assert_equals(window[prop], e.data[prop]);
+      }
+    });
+  }, `window.open() with ${openerStyle} should have equal viewport width and height`);
+});
diff --git a/testing/web-platform/tests/html/browsers/the-window-object/open-close/callback.js b/testing/web-platform/tests/html/browsers/the-window-object/open-close/callback.js
new file mode 100644
index 0000000000..ae51265a21
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/the-window-object/open-close/callback.js
@@ -0,0 +1 @@
+opener.callback()
\ No newline at end of file
diff --git a/testing/web-platform/tests/html/browsers/the-window-object/open-close/close_beforeunload-1.html b/testing/web-platform/tests/html/browsers/the-window-object/open-close/close_beforeunload-1.html
new file mode 100644
index 0000000000..6f44d8a83e
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/the-window-object/open-close/close_beforeunload-1.html
@@ -0,0 +1,7 @@
+
+
diff --git a/testing/web-platform/tests/html/browsers/the-window-object/open-close/close_beforeunload.html b/testing/web-platform/tests/html/browsers/the-window-object/open-close/close_beforeunload.html
new file mode 100644
index 0000000000..dcb8830ab6
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/the-window-object/open-close/close_beforeunload.html
@@ -0,0 +1,16 @@
+
+Running beforeunload handler in window.close()
+
+
+

+
diff --git a/testing/web-platform/tests/html/browsers/the-window-object/open-close/close_script_defer-1.html b/testing/web-platform/tests/html/browsers/the-window-object/open-close/close_script_defer-1.html
new file mode 100644
index 0000000000..c50eddd41f
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/the-window-object/open-close/close_script_defer-1.html
@@ -0,0 +1 @@
+
diff --git a/testing/web-platform/tests/html/browsers/the-window-object/open-close/close_script_defer.html b/testing/web-platform/tests/html/browsers/the-window-object/open-close/close_script_defer.html
new file mode 100644
index 0000000000..1217882b16
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/the-window-object/open-close/close_script_defer.html
@@ -0,0 +1,18 @@
+
+Running defer script in window.close()
+
+
+

+
diff --git a/testing/web-platform/tests/html/browsers/the-window-object/open-close/close_unload-1.html b/testing/web-platform/tests/html/browsers/the-window-object/open-close/close_unload-1.html
new file mode 100644
index 0000000000..9a9e304e84
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/the-window-object/open-close/close_unload-1.html
@@ -0,0 +1,7 @@
+
+
diff --git a/testing/web-platform/tests/html/browsers/the-window-object/open-close/close_unload.html b/testing/web-platform/tests/html/browsers/the-window-object/open-close/close_unload.html
new file mode 100644
index 0000000000..e4d231b285
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/the-window-object/open-close/close_unload.html
@@ -0,0 +1,16 @@
+
+Running unload handler in window.close()
+
+
+

+
diff --git a/testing/web-platform/tests/html/browsers/the-window-object/open-close/creating_browsing_context_test_01.html b/testing/web-platform/tests/html/browsers/the-window-object/open-close/creating_browsing_context_test_01.html
new file mode 100644
index 0000000000..062f61949d
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/the-window-object/open-close/creating_browsing_context_test_01.html
@@ -0,0 +1,39 @@
+
+
+[Browsing Context] : [APIs for creating browsing_contexts by name]
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/the-window-object/open-close/no_window_open_when_term_nesting_level_nonzero.window.js b/testing/web-platform/tests/html/browsers/the-window-object/open-close/no_window_open_when_term_nesting_level_nonzero.window.js
new file mode 100644
index 0000000000..3dff403b9c
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/the-window-object/open-close/no_window_open_when_term_nesting_level_nonzero.window.js
@@ -0,0 +1,113 @@
+test(function() {
+  var test_window = window.open('', '', 'height=1,width=1');
+  var test_document = test_window.document;
+
+  var frame = test_document.createElement('iframe');
+  test_document.body.appendChild(frame);
+
+  frame.contentWindow.onpagehide = function(evt) {
+    assert_equals(frame.contentWindow.open('', '', 'height=1,width=1'), null,
+      "expected no popup during pagehide");
+  };
+  frame.contentDocument.onvisibilitychange = function(evt) {
+    assert_equals(frame.contentWindow.open('', '', 'height=1,width=1'), null,
+      "expected no popup during visibilitychange");
+  };
+  frame.contentWindow.onbeforeunload = function(evt) {
+    assert_equals(frame.contentWindow.open('', '', 'height=1,width=1'), null,
+      "expected no popup during beforeunload");
+  };
+  frame.contentWindow.onunload = function(evt) {
+    assert_equals(frame.contentWindow.open('', '', 'height=1,width=1'), null,
+      "expected no popup during unload");
+  };
+
+  frame.remove();
+}, 'no popups with frame removal');
+
+async_test(function(t) {
+  var test_window = window.open('', '', 'height=1,width=1');
+  var test_document = test_window.document;
+
+  var frame = test_document.createElement('iframe');
+  test_document.body.appendChild(frame);
+
+  frame.contentWindow.onpagehide = t.step_func(function(evt) {
+    assert_equals(frame.contentWindow.open('', '', 'height=1,width=1'), null,
+      "expected no popup during pagehide");
+  });
+  frame.contentDocument.onvisibilitychange = t.step_func(function(evt) {
+    assert_equals(frame.contentWindow.open('', '', 'height=1,width=1'), null,
+      "expected no popup during visibilitychange");
+  });
+  frame.contentWindow.onbeforeunload = t.step_func(function(evt) {
+    assert_equals(frame.contentWindow.open('', '', 'height=1,width=1'), null,
+      "expected no popup during beforeunload");
+  });
+  frame.contentWindow.onunload = t.step_func(function(evt) {
+    assert_equals(frame.contentWindow.open('', '', 'height=1,width=1'), null,
+      "expected no popup during unload");
+  });
+
+  frame.onload = t.step_func_done();
+
+  frame.contentWindow.location.href = "about:blank";
+}, 'no popups with frame navigation');
+
+async_test(function(t) {
+  var test_window = window.open('', '', 'height=1,width=1');
+  var test_document = test_window.document;
+
+  var frame = test_document.createElement('iframe');
+  test_document.body.appendChild(frame);
+
+  frame.contentWindow.onpagehide = t.step_func(function(evt) {
+    assert_equals(test_window.open('', '', 'height=1,width=1'), null,
+      "expected no popup during pagehide");
+  });
+  frame.contentDocument.onvisibilitychange = t.step_func(function(evt) {
+    assert_equals(test_window.open('', '', 'height=1,width=1'), null,
+      "expected no popup during visibilitychange");
+  });
+  frame.contentWindow.onbeforeunload = t.step_func(function(evt) {
+    assert_equals(test_window.open('', '', 'height=1,width=1'), null,
+      "expected no popup during beforeunload");
+  });
+  frame.contentWindow.onunload = t.step_func(function(evt) {
+    assert_equals(test_window.open('', '', 'height=1,width=1'), null,
+      "expected no popup during unload");
+  });
+
+  frame.onload = t.step_func_done();
+
+  frame.contentWindow.location.href = "about:blank";
+}, 'no popups from synchronously reachable window');
+
+async_test(function(t) {
+  var test_window = window.open('', '', 'height=1,width=1');
+  var test_document = test_window.document;
+
+  var frame = test_document.createElement('iframe');
+  test_document.body.appendChild(frame);
+
+  frame.contentWindow.onpagehide = t.step_func(function(evt) {
+    assert_equals(window.open('', '', 'height=1,width=1'), null,
+      "expected no popup during pagehide");
+  });
+  frame.contentDocument.onvisibilitychange = t.step_func(function(evt) {
+    assert_equals(window.open('', '', 'height=1,width=1'), null,
+      "expected no popup during visibilitychange");
+  });
+  frame.contentWindow.onbeforeunload = t.step_func(function(evt) {
+    assert_equals(window.open('', '', 'height=1,width=1'), null,
+      "expected no popup during beforeunload");
+  });
+  frame.contentWindow.onunload = t.step_func(function(evt) {
+    assert_equals(window.open('', '', 'height=1,width=1'), null,
+      "expected no popup during unload");
+  });
+
+  frame.onload = t.step_func_done();
+
+  frame.contentWindow.location.href = "about:blank";
+}, 'no popups from another synchronously reachable window');
diff --git a/testing/web-platform/tests/html/browsers/the-window-object/open-close/non_automated/001-1.html b/testing/web-platform/tests/html/browsers/the-window-object/open-close/non_automated/001-1.html
new file mode 100644
index 0000000000..7dd48b41c2
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/the-window-object/open-close/non_automated/001-1.html
@@ -0,0 +1,2 @@
+
+
Now open a new tab and navigate to 001-2

diff --git a/testing/web-platform/tests/html/browsers/the-window-object/open-close/non_automated/001-2.html b/testing/web-platform/tests/html/browsers/the-window-object/open-close/non_automated/001-2.html
new file mode 100644
index 0000000000..b1413861a3
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/the-window-object/open-close/non_automated/001-2.html
@@ -0,0 +1,16 @@
+
+
diff --git a/testing/web-platform/tests/html/browsers/the-window-object/open-close/non_automated/001.html b/testing/web-platform/tests/html/browsers/the-window-object/open-close/non_automated/001.html
new file mode 100644
index 0000000000..7b0f21ec04
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/the-window-object/open-close/non_automated/001.html
@@ -0,0 +1,3 @@
+
+Accessing named windows from outside the unit of related browsing contexts
+Click here
diff --git a/testing/web-platform/tests/html/browsers/the-window-object/open-close/non_automated/002-1.html b/testing/web-platform/tests/html/browsers/the-window-object/open-close/non_automated/002-1.html
new file mode 100644
index 0000000000..0e210f351b
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/the-window-object/open-close/non_automated/002-1.html
@@ -0,0 +1,8 @@
+
+
Now open a new tab and navigate to 

+
diff --git a/testing/web-platform/tests/html/browsers/the-window-object/open-close/non_automated/002-2.html b/testing/web-platform/tests/html/browsers/the-window-object/open-close/non_automated/002-2.html
new file mode 100644
index 0000000000..b1413861a3
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/the-window-object/open-close/non_automated/002-2.html
@@ -0,0 +1,16 @@
+
+
diff --git a/testing/web-platform/tests/html/browsers/the-window-object/open-close/non_automated/002.html b/testing/web-platform/tests/html/browsers/the-window-object/open-close/non_automated/002.html
new file mode 100644
index 0000000000..b568ae8d48
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/the-window-object/open-close/non_automated/002.html
@@ -0,0 +1,3 @@
+
+Accessing different-origin named windows from outside the unit of related browsing contexts
+Click here
diff --git a/testing/web-platform/tests/html/browsers/the-window-object/open-close/open-features-is-popup-condition.html b/testing/web-platform/tests/html/browsers/the-window-object/open-close/open-features-is-popup-condition.html
new file mode 100644
index 0000000000..4f52e2e8de
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/the-window-object/open-close/open-features-is-popup-condition.html
@@ -0,0 +1,149 @@
+
+
+HTML: window.open `features`: condition for is popup
+
+
+
+
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/the-window-object/open-close/open-features-negative-innerwidth-innerheight.html b/testing/web-platform/tests/html/browsers/the-window-object/open-close/open-features-negative-innerwidth-innerheight.html
new file mode 100644
index 0000000000..019ee9d730
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/the-window-object/open-close/open-features-negative-innerwidth-innerheight.html
@@ -0,0 +1,75 @@
+
+
+HTML: window.open `features`: negative values for legacy `innerwidth`, `innerheight`
+
+
+
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/the-window-object/open-close/open-features-negative-screenx-screeny.html b/testing/web-platform/tests/html/browsers/the-window-object/open-close/open-features-negative-screenx-screeny.html
new file mode 100644
index 0000000000..6e316db482
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/the-window-object/open-close/open-features-negative-screenx-screeny.html
@@ -0,0 +1,67 @@
+
+
+HTML: window.open `features`: negative values for legacy `screenx`, `screeny`
+
+
+
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/the-window-object/open-close/open-features-negative-top-left.html b/testing/web-platform/tests/html/browsers/the-window-object/open-close/open-features-negative-top-left.html
new file mode 100644
index 0000000000..316b01a401
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/the-window-object/open-close/open-features-negative-top-left.html
@@ -0,0 +1,68 @@
+
+
+HTML: window.open `features`: negative values for `top`, `left`
+
+
+
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/the-window-object/open-close/open-features-negative-width-height.html b/testing/web-platform/tests/html/browsers/the-window-object/open-close/open-features-negative-width-height.html
new file mode 100644
index 0000000000..3cb155620d
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/the-window-object/open-close/open-features-negative-width-height.html
@@ -0,0 +1,75 @@
+
+
+HTML: window.open `features`: negative values for `width`, `height`
+
+
+
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/the-window-object/open-close/open-features-non-integer-height.html b/testing/web-platform/tests/html/browsers/the-window-object/open-close/open-features-non-integer-height.html
new file mode 100644
index 0000000000..d8ee866c50
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/the-window-object/open-close/open-features-non-integer-height.html
@@ -0,0 +1,91 @@
+
+
+HTML: window.open `features`: non-integer values for feature `height`
+
+
+
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/the-window-object/open-close/open-features-non-integer-innerheight.html b/testing/web-platform/tests/html/browsers/the-window-object/open-close/open-features-non-integer-innerheight.html
new file mode 100644
index 0000000000..f191d875d8
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/the-window-object/open-close/open-features-non-integer-innerheight.html
@@ -0,0 +1,76 @@
+
+
+HTML: window.open `features`: non-integer values for legacy feature `innerheight`
+
+
+
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/the-window-object/open-close/open-features-non-integer-innerwidth.html b/testing/web-platform/tests/html/browsers/the-window-object/open-close/open-features-non-integer-innerwidth.html
new file mode 100644
index 0000000000..d1ddc5e43a
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/the-window-object/open-close/open-features-non-integer-innerwidth.html
@@ -0,0 +1,75 @@
+
+
+HTML: window.open `features`: non-integer values for legacy feature `innerwidth`
+
+
+
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/the-window-object/open-close/open-features-non-integer-left.html b/testing/web-platform/tests/html/browsers/the-window-object/open-close/open-features-non-integer-left.html
new file mode 100644
index 0000000000..c771204dc4
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/the-window-object/open-close/open-features-non-integer-left.html
@@ -0,0 +1,76 @@
+
+
+HTML: window.open `features`: non-integer values for feature `left`
+
+
+
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/the-window-object/open-close/open-features-non-integer-screenx.html b/testing/web-platform/tests/html/browsers/the-window-object/open-close/open-features-non-integer-screenx.html
new file mode 100644
index 0000000000..49a3783257
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/the-window-object/open-close/open-features-non-integer-screenx.html
@@ -0,0 +1,75 @@
+
+
+HTML: window.open `features`: non-integer values for legacy feature `screenx`
+
+
+
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/the-window-object/open-close/open-features-non-integer-screeny.html b/testing/web-platform/tests/html/browsers/the-window-object/open-close/open-features-non-integer-screeny.html
new file mode 100644
index 0000000000..5183405445
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/the-window-object/open-close/open-features-non-integer-screeny.html
@@ -0,0 +1,76 @@
+
+
+HTML: window.open `features`: non-integer values for legacy feature `screeny`
+
+
+
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/the-window-object/open-close/open-features-non-integer-top.html b/testing/web-platform/tests/html/browsers/the-window-object/open-close/open-features-non-integer-top.html
new file mode 100644
index 0000000000..a7926e748b
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/the-window-object/open-close/open-features-non-integer-top.html
@@ -0,0 +1,73 @@
+
+
+HTML: window.open `features`: non-integer values for feature `top`
+
+
+
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/the-window-object/open-close/open-features-non-integer-width.html b/testing/web-platform/tests/html/browsers/the-window-object/open-close/open-features-non-integer-width.html
new file mode 100644
index 0000000000..6878063ed7
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/the-window-object/open-close/open-features-non-integer-width.html
@@ -0,0 +1,91 @@
+
+
+HTML: window.open `features`: non-integer values for feature `width`
+
+
+
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/the-window-object/open-close/open-features-tokenization-innerheight-innerwidth.html b/testing/web-platform/tests/html/browsers/the-window-object/open-close/open-features-tokenization-innerheight-innerwidth.html
new file mode 100644
index 0000000000..cf3ad25514
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/the-window-object/open-close/open-features-tokenization-innerheight-innerwidth.html
@@ -0,0 +1,55 @@
+
+
+HTML: window.open `features`: tokenization -- legacy size features `innerheight`, `innerwidth`
+
+
+
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/the-window-object/open-close/open-features-tokenization-noopener.html b/testing/web-platform/tests/html/browsers/the-window-object/open-close/open-features-tokenization-noopener.html
new file mode 100644
index 0000000000..c955e67789
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/the-window-object/open-close/open-features-tokenization-noopener.html
@@ -0,0 +1,11 @@
+
+
+HTML: window.open `features`: tokenization -- `noopener`
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/the-window-object/open-close/open-features-tokenization-noreferrer.html b/testing/web-platform/tests/html/browsers/the-window-object/open-close/open-features-tokenization-noreferrer.html
new file mode 100644
index 0000000000..4807f634fd
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/the-window-object/open-close/open-features-tokenization-noreferrer.html
@@ -0,0 +1,11 @@
+
+
+HTML: window.open `features`: tokenization -- `noreferrer`
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/the-window-object/open-close/open-features-tokenization-screenx-screeny.html b/testing/web-platform/tests/html/browsers/the-window-object/open-close/open-features-tokenization-screenx-screeny.html
new file mode 100644
index 0000000000..5a53fefc40
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/the-window-object/open-close/open-features-tokenization-screenx-screeny.html
@@ -0,0 +1,55 @@
+
+
+HTML: window.open `features`: tokenization -- legacy position features `screenx`, `screeny`
+
+
+
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/the-window-object/open-close/open-features-tokenization-top-left.html b/testing/web-platform/tests/html/browsers/the-window-object/open-close/open-features-tokenization-top-left.html
new file mode 100644
index 0000000000..842cbcf820
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/the-window-object/open-close/open-features-tokenization-top-left.html
@@ -0,0 +1,69 @@
+
+
+HTML: window.open `features`: tokenization -- position features `top` and `left`
+
+
+
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/the-window-object/open-close/open-features-tokenization-width-height.html b/testing/web-platform/tests/html/browsers/the-window-object/open-close/open-features-tokenization-width-height.html
new file mode 100644
index 0000000000..ff61199179
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/the-window-object/open-close/open-features-tokenization-width-height.html
@@ -0,0 +1,71 @@
+
+
+HTML: window.open `features`: tokenization -- size features `width` and `height`
+
+
+
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/the-window-object/open-close/resources/close-self.html b/testing/web-platform/tests/html/browsers/the-window-object/open-close/resources/close-self.html
new file mode 100644
index 0000000000..0c0cf9fc49
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/the-window-object/open-close/resources/close-self.html
@@ -0,0 +1,3 @@
+
diff --git a/testing/web-platform/tests/html/browsers/the-window-object/open-close/resources/is-popup-barprop.html b/testing/web-platform/tests/html/browsers/the-window-object/open-close/resources/is-popup-barprop.html
new file mode 100644
index 0000000000..5636e29878
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/the-window-object/open-close/resources/is-popup-barprop.html
@@ -0,0 +1,15 @@
+
+
diff --git a/testing/web-platform/tests/html/browsers/the-window-object/open-close/resources/message-opener.html b/testing/web-platform/tests/html/browsers/the-window-object/open-close/resources/message-opener.html
new file mode 100644
index 0000000000..39ad139769
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/the-window-object/open-close/resources/message-opener.html
@@ -0,0 +1,52 @@
+
+
diff --git a/testing/web-platform/tests/html/browsers/the-window-object/open-close/resources/tokenization-noopener-noreferrer.js b/testing/web-platform/tests/html/browsers/the-window-object/open-close/resources/tokenization-noopener-noreferrer.js
new file mode 100644
index 0000000000..a9d42e26de
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/the-window-object/open-close/resources/tokenization-noopener-noreferrer.js
@@ -0,0 +1,152 @@
+function booleanTests(feature) {
+  const windowURL = 'resources/close-self.html';
+  // Tests for how windows features are tokenized into 'name', 'value'
+  // window features separators are ASCII whitespace, '=' and  ','
+
+  const featureUpper = feature.toUpperCase(),
+        featureSplitBegin = feature.slice(0, 2),
+        featureSplitEnd = feature.slice(2),
+        featureMixedCase = featureSplitBegin.toUpperCase() + featureSplitEnd;
+        featureMixedCase2 = featureSplitBegin + featureSplitEnd.toUpperCase();
+
+  test (t => {
+    // Tokenizing `name`: initial window features separators are ignored
+    // Each of these variants should tokenize to (`${feature}`, '')
+    [
+      ` ${feature}`,
+      `=${feature}`,
+      `,,${feature}`,
+      `,=, ${feature}`,
+      `\n=${feature}=`,
+      `\t${feature}`,
+      `\r,,,=${feature}`,
+      `\u000C${feature}`
+    ].forEach(variant => {
+      const win = window.open(windowURL, "", variant);
+      assert_equals(win, null, `"${variant}" should activate feature "${feature}"`);
+    });
+  }, `Tokenization of "${feature}" should skip window features separators before feature`);
+
+  test (t => {
+    // Tokenizing `name`: lowercase conversion
+    // Each of these variants should tokenize as feature (`${feature}`, '')
+    // except where indicated
+    // Note also that `value` is lowercased during tokenization
+    [
+      `${featureUpper}`,
+      `${featureMixedCase}`,
+      `  ${featureMixedCase2}`,
+      `=${featureUpper}`,
+      `${featureUpper}=1`,
+      `${featureUpper}=1`,
+      `${featureUpper}=yes`,
+      `${feature}=YES`,
+    ].forEach(variant => {
+      const win = window.open(windowURL, '', variant);
+      assert_equals(win, null, `"${variant}" should activate feature "${feature}"`);
+    });
+  }, `Feature "${feature}" should be converted to ASCII lowercase`);
+
+  test (t => {
+    // After `name` has been collected, ignore any window features separators until '='
+    // except ',' OR a non-window-features-separator — break in those cases
+    // i.e. ignore whitespace until '=' unless a ',' is encountered first
+    // Each of these variants should tokenize as feature ('noopener', '')
+    [
+      `${feature}`,
+      ` ${feature}\r`,
+      `${feature}\n =`,
+      `${feature},`,
+      `${feature}  =,`,
+      `, ${feature}   =`,
+      `${feature},=`,
+      `${feature} foo`,
+      `foo ${feature}=1`,
+      `foo=\u000Cbar\u000C${feature}`
+    ].forEach(variant => {
+      const win = window.open(windowURL, '', variant);
+      assert_equals(win, null, `"${variant}" should activate feature "${feature}"`);
+    });
+  }, `After "${feature}", tokenization should skip window features separators that are not "=" or ","`);
+
+  test (t => {
+    // After initial '=', tokenizing should ignore all separators except ','
+    // before collecting `value`
+    // Each of these variants should tokenize as feature ('noopener', '')
+    // Except where indicated
+    [
+      `${feature}=  yes`,
+      `${feature}==,`,
+      `${feature}=\n ,`,
+      `${feature} = \t ,`,
+      `${feature}\n=\r 1,`,
+      `${feature}=,yes`,
+      `${feature}= yes=,`,
+      `${feature} = \u000Cyes`
+    ].forEach(variant => {
+      const win = window.open(windowURL, '', variant);
+      assert_equals(win, null, `"${variant}" should activate feature "${feature}"`);
+    });
+  }, `Tokenizing "${feature}" should ignore window feature separators except "," after initial "=" and before value`);
+
+  test (t => {
+    // Tokenizing `value` should collect any non-separator code points until first separator
+    [
+      `${feature}=1`,
+      `${feature}=yes`,
+      `${feature} = yes ,`,
+      `${feature}=\nyes  ,`,
+      `${feature}=yes yes`,
+      `${feature}=yes\ts`,
+      `${feature}==`,
+      `${feature}=1\n,`,
+      `==${feature}===`,
+      `${feature}==\u000C`
+    ].forEach(variant => {
+      const win = window.open(windowURL, '', variant);
+      assert_equals(win, null, `"${variant}" should set "${feature}"`);
+    });
+  }, `Tokenizing "${feature}" should read characters until first window feature separator as \`value\``);
+
+  test (t => {
+    [
+      `${feature}=1`,
+      `${feature}=2`,
+      `${feature}=12345`,
+      `${feature}=1.5`,
+      `${feature}=-1`,
+    ].forEach(variant => {
+      const win = window.open(windowURL, '', variant);
+      assert_equals(win, null, `"${variant}" should activate feature "${feature}"`);
+    });
+  }, 'Integer values other than 0 should activate the feature');
+
+  test (t => {
+    [
+      `${feature}=0`,
+      `${feature}=0.5`,
+      `${feature}=error`,
+    ].forEach(variant => {
+      const win = window.open(windowURL, '', variant);
+      assert_not_equals(win, null, `"${variant}" should NOT activate feature "${feature}"`);
+    });
+  }, `Integer value of 0 should not activate "${feature}"`);
+
+  test (t => {
+    [
+      `-${feature}`,
+      `${featureUpper}RRR`,
+      `${featureMixedCase}R`,
+      `${featureSplitBegin}_${featureSplitEnd}`,
+      ` ${featureSplitBegin} ${featureSplitEnd}`,
+      `${featureSplitBegin}\n${featureSplitEnd}`,
+      `${featureSplitBegin},${featureSplitEnd}`,
+      `\0${feature}`,
+      `${feature}\u0000=yes`,
+      `foo=\u000C${feature}`
+    ].forEach(variant => {
+      const win = window.open(windowURL, '', variant);
+      assert_not_equals(win, null, `"${variant}" should NOT activate feature "${feature}"`);
+    });
+  }, `Invalid feature names should not tokenize as "${feature}"`);
+}
diff --git a/testing/web-platform/tests/html/browsers/the-window-object/proxy-getOwnPropertyDescriptor.html b/testing/web-platform/tests/html/browsers/the-window-object/proxy-getOwnPropertyDescriptor.html
new file mode 100644
index 0000000000..4ea9504870
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/the-window-object/proxy-getOwnPropertyDescriptor.html
@@ -0,0 +1,126 @@
+
+
+
+  
+  getOwnPropertyDescriptor() is correct for Proxy with host object target
+  
+  
+  
+  
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/the-window-object/security-window/window-security.https.html b/testing/web-platform/tests/html/browsers/the-window-object/security-window/window-security.https.html
new file mode 100644
index 0000000000..68af5bd90b
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/the-window-object/security-window/window-security.https.html
@@ -0,0 +1,200 @@
+
+
+HTML Test: Window Security
+
+
+
+
+
+
+
+
+
+
+
+
+

+
+
diff --git a/testing/web-platform/tests/html/browsers/the-window-object/self-et-al.window.js b/testing/web-platform/tests/html/browsers/the-window-object/self-et-al.window.js
new file mode 100644
index 0000000000..1b0fa1211a
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/the-window-object/self-et-al.window.js
@@ -0,0 +1,43 @@
+function delayed_assert_done(t, w, windowProxySelfReference) {
+  // Let's make sure nobody is being sneaky
+  t.step_timeout(() => {
+    t.step_timeout(() => {
+      assert_equals(w[windowProxySelfReference], w, `${windowProxySelfReference} got cleared after some time`);
+      t.done();
+    }, 0);
+  }, 0);
+}
+
+[
+  "frames",
+  "globalThis",
+  "self",
+  "window"
+].forEach(windowProxySelfReference => {
+  async_test(t => {
+    const frame = document.body.appendChild(document.createElement("iframe")),
+          otherW = frame.contentWindow;
+    assert_equals(otherW[windowProxySelfReference], otherW, `${windowProxySelfReference} is broken`);
+    frame.remove();
+    assert_equals(otherW[windowProxySelfReference], otherW, `${windowProxySelfReference} got cleared after browsing context removal`);
+    assert_true(otherW.closed);
+
+    delayed_assert_done(t, otherW, windowProxySelfReference);
+  }, `iframeWindow.${windowProxySelfReference} before and after removal`);
+
+  async_test(t => {
+    const otherW = window.open();
+    assert_equals(otherW[windowProxySelfReference], otherW, `${windowProxySelfReference} is broken`);
+    otherW.onunload = t.step_func(() => {
+      assert_equals(otherW[windowProxySelfReference], otherW, `${windowProxySelfReference} got cleared after browsing context unload`);
+      t.step_timeout(() => {
+        assert_equals(otherW.opener, null); // Ensure browsing context is discarded
+        assert_equals(otherW[windowProxySelfReference], otherW, `${windowProxySelfReference} got cleared after browsing context removal`);
+        delayed_assert_done(t, otherW, windowProxySelfReference);
+      }, 0);
+    });
+    otherW.close();
+    assert_equals(otherW[windowProxySelfReference], otherW, `${windowProxySelfReference} got cleared after browsing context closure`);
+    assert_true(otherW.closed);
+  }, `popupWindow.${windowProxySelfReference} before, after closing, and after discarding`)
+});
diff --git a/testing/web-platform/tests/html/browsers/the-window-object/support/BarProp-target.html b/testing/web-platform/tests/html/browsers/the-window-object/support/BarProp-target.html
new file mode 100644
index 0000000000..9921e7a577
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/the-window-object/support/BarProp-target.html
@@ -0,0 +1,17 @@
+
+
diff --git a/testing/web-platform/tests/html/browsers/the-window-object/support/closed.html b/testing/web-platform/tests/html/browsers/the-window-object/support/closed.html
new file mode 100644
index 0000000000..3b70598e34
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/the-window-object/support/closed.html
@@ -0,0 +1,12 @@
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/the-window-object/support/noopener-target.html b/testing/web-platform/tests/html/browsers/the-window-object/support/noopener-target.html
new file mode 100644
index 0000000000..41e197a746
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/the-window-object/support/noopener-target.html
@@ -0,0 +1,15 @@
+
+
diff --git a/testing/web-platform/tests/html/browsers/the-window-object/support/noreferrer-target.html b/testing/web-platform/tests/html/browsers/the-window-object/support/noreferrer-target.html
new file mode 100644
index 0000000000..c2446c6fe9
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/the-window-object/support/noreferrer-target.html
@@ -0,0 +1,13 @@
+
diff --git a/testing/web-platform/tests/html/browsers/the-window-object/support/same-origin-iframe.html b/testing/web-platform/tests/html/browsers/the-window-object/support/same-origin-iframe.html
new file mode 100644
index 0000000000..763d9e466b
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/the-window-object/support/same-origin-iframe.html
@@ -0,0 +1,8 @@
+
+
+  
+    
+  
+
diff --git a/testing/web-platform/tests/html/browsers/the-window-object/support/sizing-target.html b/testing/web-platform/tests/html/browsers/the-window-object/support/sizing-target.html
new file mode 100644
index 0000000000..7cd5348a85
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/the-window-object/support/sizing-target.html
@@ -0,0 +1,17 @@
+
+
diff --git a/testing/web-platform/tests/html/browsers/the-window-object/support/window-open-popup-target.html b/testing/web-platform/tests/html/browsers/the-window-object/support/window-open-popup-target.html
new file mode 100644
index 0000000000..a0588de829
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/the-window-object/support/window-open-popup-target.html
@@ -0,0 +1,24 @@
+
+
\ No newline at end of file
diff --git a/testing/web-platform/tests/html/browsers/the-window-object/support/windowFeature-values-target.html b/testing/web-platform/tests/html/browsers/the-window-object/support/windowFeature-values-target.html
new file mode 100644
index 0000000000..3a78ddf660
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/the-window-object/support/windowFeature-values-target.html
@@ -0,0 +1,24 @@
+
diff --git a/testing/web-platform/tests/html/browsers/the-window-object/window-aliases.html b/testing/web-platform/tests/html/browsers/the-window-object/window-aliases.html
new file mode 100644
index 0000000000..135be02a30
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/the-window-object/window-aliases.html
@@ -0,0 +1,28 @@
+
+
+Aliases of the window object
+
+
+
+
+
+
+

+
diff --git a/testing/web-platform/tests/html/browsers/the-window-object/window-indexed-access-vs-named-access.html b/testing/web-platform/tests/html/browsers/the-window-object/window-indexed-access-vs-named-access.html
new file mode 100644
index 0000000000..23b9124ef7
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/the-window-object/window-indexed-access-vs-named-access.html
@@ -0,0 +1,58 @@
+
+
+Interactions between indexed and named access on the Window object
+
+
+
+
+
+

+

+
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/the-window-object/window-indexed-properties-delete-no-cache.html b/testing/web-platform/tests/html/browsers/the-window-object/window-indexed-properties-delete-no-cache.html
new file mode 100644
index 0000000000..22262943aa
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/the-window-object/window-indexed-properties-delete-no-cache.html
@@ -0,0 +1,31 @@
+
+
+Deletion of WindowProxy's indexed properties is not cached
+
+
+
+

+
diff --git a/testing/web-platform/tests/html/browsers/the-window-object/window-indexed-properties-strict.html b/testing/web-platform/tests/html/browsers/the-window-object/window-indexed-properties-strict.html
new file mode 100644
index 0000000000..2ee10a7a64
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/the-window-object/window-indexed-properties-strict.html
@@ -0,0 +1,75 @@
+
+
+Indexed properties of the window object (strict mode)
+
+
+
+
+
+
+
+

+
+
diff --git a/testing/web-platform/tests/html/browsers/the-window-object/window-indexed-properties.html b/testing/web-platform/tests/html/browsers/the-window-object/window-indexed-properties.html
new file mode 100644
index 0000000000..57f18c5944
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/the-window-object/window-indexed-properties.html
@@ -0,0 +1,71 @@
+
+
+Indexed properties of the window object (non-strict mode)
+
+
+
+
+
+
+
+

+
+
diff --git a/testing/web-platform/tests/html/browsers/the-window-object/window-open-defaults.window.js b/testing/web-platform/tests/html/browsers/the-window-object/window-open-defaults.window.js
new file mode 100644
index 0000000000..1b2d68a462
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/the-window-object/window-open-defaults.window.js
@@ -0,0 +1,12 @@
+async_test(t => {
+  const frame = document.createElement("iframe");
+  t.add_cleanup(() => frame.remove());
+  frame.name = "foo";
+  frame.src = "/common/blank.html";
+  frame.onload = t.step_func(() => {
+    frame.onload = t.unreached_func();
+    t.step_timeout(() => t.done(), 500);
+    assert_equals(window[0], window.open(undefined, "foo"));
+  });
+  document.body.append(frame);
+}, "window.open()'s url parameter default");
diff --git a/testing/web-platform/tests/html/browsers/the-window-object/window-open-invalid-url.html b/testing/web-platform/tests/html/browsers/the-window-object/window-open-invalid-url.html
new file mode 100644
index 0000000000..cabc143b9d
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/the-window-object/window-open-invalid-url.html
@@ -0,0 +1,10 @@
+
+
+window.open() with an invalid URL
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/the-window-object/window-open-noopener.html b/testing/web-platform/tests/html/browsers/the-window-object/window-open-noopener.html
new file mode 100644
index 0000000000..8d3a95df63
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/the-window-object/window-open-noopener.html
@@ -0,0 +1,137 @@
+
+
+window.open() with "noopener" tests
+
+
+
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/the-window-object/window-open-noreferrer.html b/testing/web-platform/tests/html/browsers/the-window-object/window-open-noreferrer.html
new file mode 100644
index 0000000000..92b72cdb5f
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/the-window-object/window-open-noreferrer.html
@@ -0,0 +1,20 @@
+
+
+window.open() with "noreferrer" tests
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/the-window-object/window-open-popup-behavior.html b/testing/web-platform/tests/html/browsers/the-window-object/window-open-popup-behavior.html
new file mode 100644
index 0000000000..258698d94d
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/the-window-object/window-open-popup-behavior.html
@@ -0,0 +1,51 @@
+
+
+
+Window.open popup behavior
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/the-window-object/window-open-windowfeatures-values.html b/testing/web-platform/tests/html/browsers/the-window-object/window-open-windowfeatures-values.html
new file mode 100644
index 0000000000..32551dd8d7
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/the-window-object/window-open-windowfeatures-values.html
@@ -0,0 +1,72 @@
+
+
+
+window.open() windowFeature value parsing
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/the-window-object/window-opener-unconfigurable.window.js b/testing/web-platform/tests/html/browsers/the-window-object/window-opener-unconfigurable.window.js
new file mode 100644
index 0000000000..2b9bda6792
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/the-window-object/window-opener-unconfigurable.window.js
@@ -0,0 +1,17 @@
+test(t => {
+  let desc = Object.getOwnPropertyDescriptor(self, "opener");
+  assert_true(!!desc.get, "Initially {get: function}");
+  assert_true(!!desc.set, "Initially {set: function}");
+  assert_true(desc.configurable, "Initially {configurable: true}");
+  assert_true(desc.enumerable, "Initially {enumerable: true}");
+
+  Object.defineProperty(self, "opener", {configurable: false});
+
+  desc = Object.getOwnPropertyDescriptor(self, "opener");
+  assert_true(!!desc.get, "Still has {get: function}");
+  assert_true(!!desc.set, "Still has {set: function}");
+  assert_false(desc.configurable, "Changed to {configurable: false}");
+  assert_true(desc.enumerable, "Still has {enumerable: true}");
+
+  assert_throws_js(TypeError, () => self.opener = "something", "Throws a TypeError due to {configurable: false}");
+}, "Corner case: self.opener is set while it's not configurable");
diff --git a/testing/web-platform/tests/html/browsers/the-window-object/window-properties.https.html b/testing/web-platform/tests/html/browsers/the-window-object/window-properties.https.html
new file mode 100644
index 0000000000..c61fb04ae2
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/the-window-object/window-properties.https.html
@@ -0,0 +1,358 @@
+
+
+Properties of the window object
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+

+
diff --git a/testing/web-platform/tests/html/browsers/the-window-object/window-prototype-chain.html b/testing/web-platform/tests/html/browsers/the-window-object/window-prototype-chain.html
new file mode 100644
index 0000000000..14dbca35e8
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/the-window-object/window-prototype-chain.html
@@ -0,0 +1,32 @@
+
+
+Prototype chain of the window object
+
+
+
+
+
+
+
+

+
diff --git a/testing/web-platform/tests/html/browsers/the-window-object/window-reuse-in-nested-browsing-contexts.tentative.html b/testing/web-platform/tests/html/browsers/the-window-object/window-reuse-in-nested-browsing-contexts.tentative.html
new file mode 100644
index 0000000000..03c7a68dfd
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/the-window-object/window-reuse-in-nested-browsing-contexts.tentative.html
@@ -0,0 +1,158 @@
+
+
+
+
+
+

+
diff --git a/testing/web-platform/tests/html/browsers/the-windowproxy-exotic-object/document-tree-child-browsing-context-name-property-set.sub.html b/testing/web-platform/tests/html/browsers/the-windowproxy-exotic-object/document-tree-child-browsing-context-name-property-set.sub.html
new file mode 100644
index 0000000000..171aa01999
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/the-windowproxy-exotic-object/document-tree-child-browsing-context-name-property-set.sub.html
@@ -0,0 +1,26 @@
+
+
+document-tree child browsing context name property set
+
+
+
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/the-windowproxy-exotic-object/windowproxy-define-own-property-unforgeable-same-origin.html b/testing/web-platform/tests/html/browsers/the-windowproxy-exotic-object/windowproxy-define-own-property-unforgeable-same-origin.html
new file mode 100644
index 0000000000..ac4eb458c3
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/the-windowproxy-exotic-object/windowproxy-define-own-property-unforgeable-same-origin.html
@@ -0,0 +1,47 @@
+
+
+[[DefineOwnProperty]] on a WindowProxy forwards to OrdinaryDefineOwnProperty for same-origin objects
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/the-windowproxy-exotic-object/windowproxy-prevent-extensions.html b/testing/web-platform/tests/html/browsers/the-windowproxy-exotic-object/windowproxy-prevent-extensions.html
new file mode 100644
index 0000000000..97a156290a
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/the-windowproxy-exotic-object/windowproxy-prevent-extensions.html
@@ -0,0 +1,21 @@
+
+
+[[PreventExtensions]] on a WindowProxy object should return false
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/the-windowproxy-exotic-object/windowproxy-prototype-setting-cross-origin-domain.sub.html b/testing/web-platform/tests/html/browsers/the-windowproxy-exotic-object/windowproxy-prototype-setting-cross-origin-domain.sub.html
new file mode 100644
index 0000000000..a5ae78cc87
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/the-windowproxy-exotic-object/windowproxy-prototype-setting-cross-origin-domain.sub.html
@@ -0,0 +1,29 @@
+
+
+[[SetPrototypeOf]] on a WindowProxy object should not allow changing its value: cross-origin via document.domain
+
+
+
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/the-windowproxy-exotic-object/windowproxy-prototype-setting-cross-origin.sub.html b/testing/web-platform/tests/html/browsers/the-windowproxy-exotic-object/windowproxy-prototype-setting-cross-origin.sub.html
new file mode 100644
index 0000000000..a5c1a2f102
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/the-windowproxy-exotic-object/windowproxy-prototype-setting-cross-origin.sub.html
@@ -0,0 +1,28 @@
+
+
+[[SetPrototypeOf]] on a WindowProxy object should not allow changing its value: cross-origin
+
+
+
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/the-windowproxy-exotic-object/windowproxy-prototype-setting-goes-cross-origin-domain.sub.html b/testing/web-platform/tests/html/browsers/the-windowproxy-exotic-object/windowproxy-prototype-setting-goes-cross-origin-domain.sub.html
new file mode 100644
index 0000000000..239fa6ddf2
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/the-windowproxy-exotic-object/windowproxy-prototype-setting-goes-cross-origin-domain.sub.html
@@ -0,0 +1,39 @@
+
+
+[[SetPrototypeOf]] on a WindowProxy object should not allow changing its value: cross-origin via document.domain after initially getting the object
+
+
+
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/the-windowproxy-exotic-object/windowproxy-prototype-setting-same-origin-domain.sub.html b/testing/web-platform/tests/html/browsers/the-windowproxy-exotic-object/windowproxy-prototype-setting-same-origin-domain.sub.html
new file mode 100644
index 0000000000..fb18822ac5
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/the-windowproxy-exotic-object/windowproxy-prototype-setting-same-origin-domain.sub.html
@@ -0,0 +1,30 @@
+
+
+[[SetPrototypeOf]] on a WindowProxy object should not allow changing its value: cross-origin, but same-origin-domain
+
+
+
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/the-windowproxy-exotic-object/windowproxy-prototype-setting-same-origin.html b/testing/web-platform/tests/html/browsers/the-windowproxy-exotic-object/windowproxy-prototype-setting-same-origin.html
new file mode 100644
index 0000000000..5779199ca3
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/the-windowproxy-exotic-object/windowproxy-prototype-setting-same-origin.html
@@ -0,0 +1,21 @@
+
+
+[[SetPrototypeOf]] on a WindowProxy object should not allow changing its value: same-origin
+
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/windows/auxiliary-browsing-contexts/opener-closed.html b/testing/web-platform/tests/html/browsers/windows/auxiliary-browsing-contexts/opener-closed.html
new file mode 100644
index 0000000000..106c3f97cb
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/windows/auxiliary-browsing-contexts/opener-closed.html
@@ -0,0 +1,31 @@
+
+
+
+  
+    Auxiliary Browsing Contexts: window.opener when Opener Removed/Closed
+    
+    
+    
+  
+  
+    

+    
+  
+
diff --git a/testing/web-platform/tests/html/browsers/windows/auxiliary-browsing-contexts/opener-multiple.html b/testing/web-platform/tests/html/browsers/windows/auxiliary-browsing-contexts/opener-multiple.html
new file mode 100644
index 0000000000..e71d4dc868
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/windows/auxiliary-browsing-contexts/opener-multiple.html
@@ -0,0 +1,35 @@
+
+
+  
+    Auxiliary Browsing Contexts: window.opener, multiple
+    
+    
+    
+  
+  
+    

+    
+  
+
diff --git a/testing/web-platform/tests/html/browsers/windows/auxiliary-browsing-contexts/opener-noopener.html b/testing/web-platform/tests/html/browsers/windows/auxiliary-browsing-contexts/opener-noopener.html
new file mode 100644
index 0000000000..086a96442d
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/windows/auxiliary-browsing-contexts/opener-noopener.html
@@ -0,0 +1,25 @@
+
+
+  
+    Auxiliary Browsing Contexts: window.opener noopener
+    
+    
+    
+  
+  
+    

+    
+  
+
diff --git a/testing/web-platform/tests/html/browsers/windows/auxiliary-browsing-contexts/opener-noreferrer.html b/testing/web-platform/tests/html/browsers/windows/auxiliary-browsing-contexts/opener-noreferrer.html
new file mode 100644
index 0000000000..b8226bd2b9
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/windows/auxiliary-browsing-contexts/opener-noreferrer.html
@@ -0,0 +1,29 @@
+
+
+  
+    Auxiliary Browsing Contexts: window.opener noreferrer
+    
+    
+    
+  
+  
+    

+    
+  
+
diff --git a/testing/web-platform/tests/html/browsers/windows/auxiliary-browsing-contexts/opener-setter.html b/testing/web-platform/tests/html/browsers/windows/auxiliary-browsing-contexts/opener-setter.html
new file mode 100644
index 0000000000..ac6e47b846
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/windows/auxiliary-browsing-contexts/opener-setter.html
@@ -0,0 +1,33 @@
+
+
+  
+    Auxiliary Browsing Contexts: window.opener setter
+    
+    
+    
+    
+  
+  
+    

+    
+  
+
diff --git a/testing/web-platform/tests/html/browsers/windows/auxiliary-browsing-contexts/opener-setter.window.js b/testing/web-platform/tests/html/browsers/windows/auxiliary-browsing-contexts/opener-setter.window.js
new file mode 100644
index 0000000000..6d540ce97c
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/windows/auxiliary-browsing-contexts/opener-setter.window.js
@@ -0,0 +1,38 @@
+[
+  undefined,
+  42,
+  function() { return "hi" },
+  "hi",
+  {},
+  [],
+  Symbol()
+].forEach(val => {
+  test(t => {
+    const frame = document.body.appendChild(document.createElement("iframe")),
+          win = frame.contentWindow;
+    t.add_cleanup(() => frame.remove());
+
+    assert_own_property(win, "opener");
+    assert_equals(win.opener, null);
+    const beforeDesc = Object.getOwnPropertyDescriptor(win, "opener"),
+          openerGet = beforeDesc.get,
+          openerSet = beforeDesc.set;
+    assert_own_property(beforeDesc, "get");
+    assert_own_property(beforeDesc, "set");
+    assert_true(beforeDesc.enumerable);
+    assert_true(beforeDesc.configurable);
+
+    win.opener = val;
+    assert_equals(win.opener, val);
+    assert_equals(openerGet(), null);
+
+    const desc = Object.getOwnPropertyDescriptor(win, "opener");
+    assert_equals(desc.value, val);
+    assert_true(desc.writable);
+    assert_true(desc.enumerable);
+    assert_true(desc.configurable);
+
+    openerSet("x");
+    assert_equals(win.opener, "x");
+  }, "Setting window.opener to " + String(val)); // String() needed for symbols
+});
diff --git a/testing/web-platform/tests/html/browsers/windows/auxiliary-browsing-contexts/opener.html b/testing/web-platform/tests/html/browsers/windows/auxiliary-browsing-contexts/opener.html
new file mode 100644
index 0000000000..c43d3bd3bf
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/windows/auxiliary-browsing-contexts/opener.html
@@ -0,0 +1,55 @@
+
+
+  
+    Auxiliary Browsing Contexts: window.opener
+    
+    
+    
+  
+  
+    

+    
+  
+
diff --git a/testing/web-platform/tests/html/browsers/windows/auxiliary-browsing-contexts/resources/close-opener.html b/testing/web-platform/tests/html/browsers/windows/auxiliary-browsing-contexts/resources/close-opener.html
new file mode 100644
index 0000000000..f41773ed2c
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/windows/auxiliary-browsing-contexts/resources/close-opener.html
@@ -0,0 +1,30 @@
+
+
+
+
+
This window should close its opener.

+
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/windows/auxiliary-browsing-contexts/resources/message-window-opener.html b/testing/web-platform/tests/html/browsers/windows/auxiliary-browsing-contexts/resources/message-window-opener.html
new file mode 100644
index 0000000000..8105650b61
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/windows/auxiliary-browsing-contexts/resources/message-window-opener.html
@@ -0,0 +1,14 @@
+
+
diff --git a/testing/web-platform/tests/html/browsers/windows/auxiliary-browsing-contexts/resources/multiple-opener.html b/testing/web-platform/tests/html/browsers/windows/auxiliary-browsing-contexts/resources/multiple-opener.html
new file mode 100644
index 0000000000..2e63b9f4c6
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/windows/auxiliary-browsing-contexts/resources/multiple-opener.html
@@ -0,0 +1,32 @@
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/windows/auxiliary-browsing-contexts/resources/no-opener.html b/testing/web-platform/tests/html/browsers/windows/auxiliary-browsing-contexts/resources/no-opener.html
new file mode 100644
index 0000000000..afd72f948d
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/windows/auxiliary-browsing-contexts/resources/no-opener.html
@@ -0,0 +1,16 @@
+
+
+
+
This window should have no opener.

+
+
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/windows/auxiliary-browsing-contexts/resources/open-closer.html b/testing/web-platform/tests/html/browsers/windows/auxiliary-browsing-contexts/resources/open-closer.html
new file mode 100644
index 0000000000..7575c7c95f
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/windows/auxiliary-browsing-contexts/resources/open-closer.html
@@ -0,0 +1,17 @@
+
+
+
+
+Open auxiliary context that will close this window (its opener)
+
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/windows/auxiliary-browsing-contexts/resources/opener-setter.html b/testing/web-platform/tests/html/browsers/windows/auxiliary-browsing-contexts/resources/opener-setter.html
new file mode 100644
index 0000000000..4112dae0ce
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/windows/auxiliary-browsing-contexts/resources/opener-setter.html
@@ -0,0 +1,23 @@
+
+
+
+
This window should set the window.opener attribute

+
+
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/windows/browsing-context-names/choose-_blank-001.html b/testing/web-platform/tests/html/browsers/windows/browsing-context-names/choose-_blank-001.html
new file mode 100644
index 0000000000..a1416f2eb8
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/windows/browsing-context-names/choose-_blank-001.html
@@ -0,0 +1,35 @@
+
+
+HTML Test: Browsing context - `_blank` name keyword
+
+
+

+
diff --git a/testing/web-platform/tests/html/browsers/windows/browsing-context-names/choose-_blank-002.html b/testing/web-platform/tests/html/browsers/windows/browsing-context-names/choose-_blank-002.html
new file mode 100644
index 0000000000..aba9d52ba0
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/windows/browsing-context-names/choose-_blank-002.html
@@ -0,0 +1,21 @@
+
+Link with target=_blank, rel=noreferrer
+
+
+
+

+Link
+
diff --git a/testing/web-platform/tests/html/browsers/windows/browsing-context-names/choose-_blank-003.html b/testing/web-platform/tests/html/browsers/windows/browsing-context-names/choose-_blank-003.html
new file mode 100644
index 0000000000..5571344c85
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/windows/browsing-context-names/choose-_blank-003.html
@@ -0,0 +1,20 @@
+
+Link with target=_blank, no rel
+
+
+
+

+Link
+
diff --git a/testing/web-platform/tests/html/browsers/windows/browsing-context-names/choose-_parent-001.html b/testing/web-platform/tests/html/browsers/windows/browsing-context-names/choose-_parent-001.html
new file mode 100644
index 0000000000..35cbc101c7
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/windows/browsing-context-names/choose-_parent-001.html
@@ -0,0 +1,15 @@
+
+
+HTML Test: Choose browsing context - '_parent'
+
+
+
+

+
+
diff --git a/testing/web-platform/tests/html/browsers/windows/browsing-context-names/choose-_parent-002.html b/testing/web-platform/tests/html/browsers/windows/browsing-context-names/choose-_parent-002.html
new file mode 100644
index 0000000000..7b7d561030
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/windows/browsing-context-names/choose-_parent-002.html
@@ -0,0 +1,17 @@
+
+
+HTML Test: Choose browsing context - '_parent' (nested contexts)
+
+
+

+
diff --git a/testing/web-platform/tests/html/browsers/windows/browsing-context-names/choose-_parent-003.html b/testing/web-platform/tests/html/browsers/windows/browsing-context-names/choose-_parent-003.html
new file mode 100644
index 0000000000..20dc9b0d2a
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/windows/browsing-context-names/choose-_parent-003.html
@@ -0,0 +1,17 @@
+
+
+HTML Test: Choose browsing context - '_parent' (via window.open)
+
+
+

+
diff --git a/testing/web-platform/tests/html/browsers/windows/browsing-context-names/choose-_parent-004.html b/testing/web-platform/tests/html/browsers/windows/browsing-context-names/choose-_parent-004.html
new file mode 100644
index 0000000000..c79378018a
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/windows/browsing-context-names/choose-_parent-004.html
@@ -0,0 +1,40 @@
+
+
+HTML Test: Choose browsing context - '_parent' (case-sensitivity)
+
+
+
+
+

+
+
+
diff --git a/testing/web-platform/tests/html/browsers/windows/browsing-context-names/choose-_self-001.html b/testing/web-platform/tests/html/browsers/windows/browsing-context-names/choose-_self-001.html
new file mode 100644
index 0000000000..ed7666846d
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/windows/browsing-context-names/choose-_self-001.html
@@ -0,0 +1,15 @@
+
+
+HTML Test: Choose browsing context - the given name is '_self'
+
+
+
+

+
+
diff --git a/testing/web-platform/tests/html/browsers/windows/browsing-context-names/choose-_self-002.html b/testing/web-platform/tests/html/browsers/windows/browsing-context-names/choose-_self-002.html
new file mode 100644
index 0000000000..2e798f5493
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/windows/browsing-context-names/choose-_self-002.html
@@ -0,0 +1,46 @@
+
+
+HTML Test: Choose browsing context - '_self' (case-sensitivity)
+
+
+
+
+

+
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/windows/browsing-context-names/choose-_top-001.html b/testing/web-platform/tests/html/browsers/windows/browsing-context-names/choose-_top-001.html
new file mode 100644
index 0000000000..de4c6ad115
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/windows/browsing-context-names/choose-_top-001.html
@@ -0,0 +1,34 @@
+
+HTML Test: Browsing context name - _top (current is top)
+
+
+
+

+
diff --git a/testing/web-platform/tests/html/browsers/windows/browsing-context-names/choose-_top-002.html b/testing/web-platform/tests/html/browsers/windows/browsing-context-names/choose-_top-002.html
new file mode 100644
index 0000000000..f29da80c6e
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/windows/browsing-context-names/choose-_top-002.html
@@ -0,0 +1,33 @@
+
+HTML Test: Browsing context name - _top
+
+
+
+

+
diff --git a/testing/web-platform/tests/html/browsers/windows/browsing-context-names/choose-_top-003.html b/testing/web-platform/tests/html/browsers/windows/browsing-context-names/choose-_top-003.html
new file mode 100644
index 0000000000..e068f8cc1f
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/windows/browsing-context-names/choose-_top-003.html
@@ -0,0 +1,39 @@
+
+
+HTML Test: Choose browsing context - '_top' (case-sensitivity)
+
+
+
+
+

+
+
+
diff --git a/testing/web-platform/tests/html/browsers/windows/browsing-context-names/choose-default-001.html b/testing/web-platform/tests/html/browsers/windows/browsing-context-names/choose-default-001.html
new file mode 100644
index 0000000000..c21159e0a6
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/windows/browsing-context-names/choose-default-001.html
@@ -0,0 +1,23 @@
+
+
+HTML Test: Browsing context - Default name
+
+
+
+

+
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/windows/browsing-context-names/choose-default-002.html b/testing/web-platform/tests/html/browsers/windows/browsing-context-names/choose-default-002.html
new file mode 100644
index 0000000000..748ee68973
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/windows/browsing-context-names/choose-default-002.html
@@ -0,0 +1,16 @@
+
+
+HTML Test: Browsing context names - empty string
+
+
+
+

+
+
diff --git a/testing/web-platform/tests/html/browsers/windows/browsing-context-names/choose-existing-001.html b/testing/web-platform/tests/html/browsers/windows/browsing-context-names/choose-existing-001.html
new file mode 100644
index 0000000000..fdf74b8a79
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/windows/browsing-context-names/choose-existing-001.html
@@ -0,0 +1,17 @@
+
+
+HTML Test: Choose browsing context - the given name is same as an existing browsing context's name
+
+
+
+

+
+
+
diff --git a/testing/web-platform/tests/html/browsers/windows/browsing-context-names/resources/choose-_parent-001-iframe-1.html b/testing/web-platform/tests/html/browsers/windows/browsing-context-names/resources/choose-_parent-001-iframe-1.html
new file mode 100644
index 0000000000..04dd74f1a5
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/windows/browsing-context-names/resources/choose-_parent-001-iframe-1.html
@@ -0,0 +1,5 @@
+
+
+HTML Test: browsing context name - parent
+
+
diff --git a/testing/web-platform/tests/html/browsers/windows/browsing-context-names/resources/choose-_parent-002-iframe.html b/testing/web-platform/tests/html/browsers/windows/browsing-context-names/resources/choose-_parent-002-iframe.html
new file mode 100644
index 0000000000..52da8986b0
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/windows/browsing-context-names/resources/choose-_parent-002-iframe.html
@@ -0,0 +1,4 @@
+
+
+HTML Test: browsing context name - parent: nested context
+
diff --git a/testing/web-platform/tests/html/browsers/windows/browsing-context-names/resources/choose-_parent-002-window.html b/testing/web-platform/tests/html/browsers/windows/browsing-context-names/resources/choose-_parent-002-window.html
new file mode 100644
index 0000000000..558193742f
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/windows/browsing-context-names/resources/choose-_parent-002-window.html
@@ -0,0 +1,12 @@
+
+
+HTML Test: browsing context name - parent: top-level context
+
+
diff --git a/testing/web-platform/tests/html/browsers/windows/browsing-context-names/resources/choose-_parent-003-iframe.html b/testing/web-platform/tests/html/browsers/windows/browsing-context-names/resources/choose-_parent-003-iframe.html
new file mode 100644
index 0000000000..1412dc2e79
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/windows/browsing-context-names/resources/choose-_parent-003-iframe.html
@@ -0,0 +1,6 @@
+
+
+HTML Test: browsing context name - parent
+
diff --git a/testing/web-platform/tests/html/browsers/windows/browsing-context-names/resources/choose-_parent-003-window.html b/testing/web-platform/tests/html/browsers/windows/browsing-context-names/resources/choose-_parent-003-window.html
new file mode 100644
index 0000000000..bd1802aed6
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/windows/browsing-context-names/resources/choose-_parent-003-window.html
@@ -0,0 +1,4 @@
+
+
+HTML Test: browsing context name - parent: top-level context (gets replaced)
+
diff --git a/testing/web-platform/tests/html/browsers/windows/browsing-context-names/resources/choose-_parent-004-iframe-1.html b/testing/web-platform/tests/html/browsers/windows/browsing-context-names/resources/choose-_parent-004-iframe-1.html
new file mode 100644
index 0000000000..7a8cbecb27
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/windows/browsing-context-names/resources/choose-_parent-004-iframe-1.html
@@ -0,0 +1,14 @@
+
+
+HTML Test: browsing context name - parent
+
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/windows/browsing-context-names/resources/choose-_parent-004-iframe-2.html b/testing/web-platform/tests/html/browsers/windows/browsing-context-names/resources/choose-_parent-004-iframe-2.html
new file mode 100644
index 0000000000..33ead5a538
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/windows/browsing-context-names/resources/choose-_parent-004-iframe-2.html
@@ -0,0 +1,9 @@
+
+
+HTML Test: browsing context name - parent (case-insensitive)
+
+
diff --git a/testing/web-platform/tests/html/browsers/windows/browsing-context-names/resources/choose-_self-001-iframe.html b/testing/web-platform/tests/html/browsers/windows/browsing-context-names/resources/choose-_self-001-iframe.html
new file mode 100644
index 0000000000..0ad79d6e16
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/windows/browsing-context-names/resources/choose-_self-001-iframe.html
@@ -0,0 +1,9 @@
+
+
+HTML Test: browsing context name - self
+
+
diff --git a/testing/web-platform/tests/html/browsers/windows/browsing-context-names/resources/choose-_self-002-iframe.html b/testing/web-platform/tests/html/browsers/windows/browsing-context-names/resources/choose-_self-002-iframe.html
new file mode 100644
index 0000000000..9d88305e09
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/windows/browsing-context-names/resources/choose-_self-002-iframe.html
@@ -0,0 +1,11 @@
+
+
+HTML Test: browsing context name - self (case-insensitive)
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/windows/browsing-context-names/resources/choose-_top-002-window.html b/testing/web-platform/tests/html/browsers/windows/browsing-context-names/resources/choose-_top-002-window.html
new file mode 100644
index 0000000000..d71384b72f
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/windows/browsing-context-names/resources/choose-_top-002-window.html
@@ -0,0 +1,16 @@
+
+
+
+HTML Test: browsing context name - _top
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/windows/browsing-context-names/resources/choose-_top-003-iframe-1.html b/testing/web-platform/tests/html/browsers/windows/browsing-context-names/resources/choose-_top-003-iframe-1.html
new file mode 100644
index 0000000000..aecc2fd88a
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/windows/browsing-context-names/resources/choose-_top-003-iframe-1.html
@@ -0,0 +1,15 @@
+
+
+HTML Test: browsing context name - top (case-insensitive)
+
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/windows/browsing-context-names/resources/choose-_top-003-iframe-2.html b/testing/web-platform/tests/html/browsers/windows/browsing-context-names/resources/choose-_top-003-iframe-2.html
new file mode 100644
index 0000000000..a1a7e1dda7
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/windows/browsing-context-names/resources/choose-_top-003-iframe-2.html
@@ -0,0 +1,10 @@
+
+
+HTML Test: browsing context name - top (case-insensitive)
+
+
diff --git a/testing/web-platform/tests/html/browsers/windows/browsing-context-names/resources/choose-default-002-iframe.html b/testing/web-platform/tests/html/browsers/windows/browsing-context-names/resources/choose-default-002-iframe.html
new file mode 100644
index 0000000000..567e4ea310
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/windows/browsing-context-names/resources/choose-default-002-iframe.html
@@ -0,0 +1,17 @@
+
+
+
+HTML Test: browsing context name - Empty string
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/windows/browsing-context-names/resources/choose-existing-001-iframe.html b/testing/web-platform/tests/html/browsers/windows/browsing-context-names/resources/choose-existing-001-iframe.html
new file mode 100644
index 0000000000..cb0b554854
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/windows/browsing-context-names/resources/choose-existing-001-iframe.html
@@ -0,0 +1,7 @@
+
+
+This is a test page
+
+
diff --git a/testing/web-platform/tests/html/browsers/windows/browsing-context-names/resources/open-in-_parent.html b/testing/web-platform/tests/html/browsers/windows/browsing-context-names/resources/open-in-_parent.html
new file mode 100644
index 0000000000..81d0735c60
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/windows/browsing-context-names/resources/open-in-_parent.html
@@ -0,0 +1,9 @@
+
+
+HTML Test: browsing context name - parent
+
+
diff --git a/testing/web-platform/tests/html/browsers/windows/browsing-context-names/resources/open-in-_top.html b/testing/web-platform/tests/html/browsers/windows/browsing-context-names/resources/open-in-_top.html
new file mode 100644
index 0000000000..929d52d15e
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/windows/browsing-context-names/resources/open-in-_top.html
@@ -0,0 +1,9 @@
+
+
+
+HTML Test: browsing context name - _top
+
diff --git a/testing/web-platform/tests/html/browsers/windows/browsing-context-names/resources/post-to-opener.html b/testing/web-platform/tests/html/browsers/windows/browsing-context-names/resources/post-to-opener.html
new file mode 100644
index 0000000000..3e9b7aaccb
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/windows/browsing-context-names/resources/post-to-opener.html
@@ -0,0 +1,12 @@
+
+
+HTML Test: post window's name to top browsing context
+
+
diff --git a/testing/web-platform/tests/html/browsers/windows/browsing-context-names/resources/post-to-top.html b/testing/web-platform/tests/html/browsers/windows/browsing-context-names/resources/post-to-top.html
new file mode 100644
index 0000000000..aebb57b019
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/windows/browsing-context-names/resources/post-to-top.html
@@ -0,0 +1,10 @@
+
+
+HTML Test: post window's name to top browsing context
+
+
diff --git a/testing/web-platform/tests/html/browsers/windows/browsing-context-names/resources/report-has-opener.html b/testing/web-platform/tests/html/browsers/windows/browsing-context-names/resources/report-has-opener.html
new file mode 100644
index 0000000000..37d8cedc6d
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/windows/browsing-context-names/resources/report-has-opener.html
@@ -0,0 +1,8 @@
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/windows/browsing-context-names/resources/report-is-top.html b/testing/web-platform/tests/html/browsers/windows/browsing-context-names/resources/report-is-top.html
new file mode 100644
index 0000000000..8711235982
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/windows/browsing-context-names/resources/report-is-top.html
@@ -0,0 +1,10 @@
+
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/windows/browsing-context-window.html b/testing/web-platform/tests/html/browsers/windows/browsing-context-window.html
new file mode 100644
index 0000000000..f4f3c715ac
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/windows/browsing-context-window.html
@@ -0,0 +1,37 @@
+
+
+  
+    HTML Test: Newly-Created browsing context Window and `this`
+    
+    
+    
+    
+  
+  
+    

+    
+  
+
diff --git a/testing/web-platform/tests/html/browsers/windows/browsing-context.html b/testing/web-platform/tests/html/browsers/windows/browsing-context.html
new file mode 100644
index 0000000000..59367b0428
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/windows/browsing-context.html
@@ -0,0 +1,48 @@
+
+
+  
+    HTML Test: Browsing context is first created
+    
+    
+    
+  
+  
+    

+    
+  
+
diff --git a/testing/web-platform/tests/html/browsers/windows/clear-window-name.https.html b/testing/web-platform/tests/html/browsers/windows/clear-window-name.https.html
new file mode 100644
index 0000000000..698de8a1ca
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/windows/clear-window-name.https.html
@@ -0,0 +1,122 @@
+
+
+
+  Clear window.name when cross-origin
+  
+  
+  
+  
+
+
+  
+
+
diff --git a/testing/web-platform/tests/html/browsers/windows/document-domain-nested-navigate.window.js b/testing/web-platform/tests/html/browsers/windows/document-domain-nested-navigate.window.js
new file mode 100644
index 0000000000..f51eed5ca9
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/windows/document-domain-nested-navigate.window.js
@@ -0,0 +1,16 @@
+async_test(t => {
+  // Setting document.domain makes this document cross-origin with that of the frame. However,
+  // about:blank will end up reusing the origin of this document, at which point the frame's
+  // document is no longer cross-origin.
+  const frame = document.body.appendChild(document.createElement('iframe'));
+  document.domain = document.domain;
+  frame.src = "/common/blank.html";
+  frame.onload = t.step_func(() => {
+    assert_throws_dom("SecurityError", () => window[0].document);
+    frame.src = "about:blank";
+    frame.onload = t.step_func_done(() => {
+      // Ensure we can access the child browsing context after navigation to non-initial about:blank
+      assert_equals(window[0].document, frame.contentDocument);
+    });
+  });
+}, "Navigated frame to about:blank and document.domain");
diff --git a/testing/web-platform/tests/html/browsers/windows/document-domain-nested-set.window.js b/testing/web-platform/tests/html/browsers/windows/document-domain-nested-set.window.js
new file mode 100644
index 0000000000..13c0d50ba0
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/windows/document-domain-nested-set.window.js
@@ -0,0 +1,10 @@
+test(() => {
+  // As the initial:about frame document reuses the origin of this document, setting document.domain
+  // from the frame, resulting in a origin mutation, has no effect on these documents being able to
+  // reach each other, as they share the same "physical" origin.
+  document.body.appendChild(document.createElement('iframe'));
+  const script = document.createElement("script");
+  script.text = "document.domain = document.domain";
+  window[0].document.body.appendChild(script);
+  assert_equals(window[0].document.body.localName, "body");
+}, "Initial about:blank frame and document.domain in the frame");
diff --git a/testing/web-platform/tests/html/browsers/windows/document-domain-nested.window.js b/testing/web-platform/tests/html/browsers/windows/document-domain-nested.window.js
new file mode 100644
index 0000000000..2e39d05f03
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/windows/document-domain-nested.window.js
@@ -0,0 +1,9 @@
+test(() => {
+  // As the initial:about frame document reuses the origin of this document, setting document.domain
+  // from this document, resulting in a origin mutation, has no effect on these documents being able
+  // to reach each other, as they share the same "physical" origin.
+  document.body.appendChild(document.createElement('iframe'));
+  document.domain = document.domain;
+  // Ensure we can still access the child browsing context
+  assert_equals(window[0].document.body.localName, "body");
+}, "Initial about:blank frame and document.domain");
diff --git a/testing/web-platform/tests/html/browsers/windows/document-domain-removed-iframe.html b/testing/web-platform/tests/html/browsers/windows/document-domain-removed-iframe.html
new file mode 100644
index 0000000000..7403ebfaad
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/windows/document-domain-removed-iframe.html
@@ -0,0 +1,72 @@
+
+
+document.domain and removed iframe interaction
+
+
+
+
+
+

+
+
diff --git a/testing/web-platform/tests/html/browsers/windows/embedded-opener-a-form.html b/testing/web-platform/tests/html/browsers/windows/embedded-opener-a-form.html
new file mode 100644
index 0000000000..e1ec760b92
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/windows/embedded-opener-a-form.html
@@ -0,0 +1,30 @@
+
+opener and embedded documents; using a and form
+
+
+

+
+<a>
+

+
diff --git a/testing/web-platform/tests/html/browsers/windows/embedded-opener-remove-frame.html b/testing/web-platform/tests/html/browsers/windows/embedded-opener-remove-frame.html
new file mode 100644
index 0000000000..a66f52e5f6
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/windows/embedded-opener-remove-frame.html
@@ -0,0 +1,66 @@
+
+opener and discarded browsing contexts
+
+
+

+
+
diff --git a/testing/web-platform/tests/html/browsers/windows/embedded-opener.html b/testing/web-platform/tests/html/browsers/windows/embedded-opener.html
new file mode 100644
index 0000000000..8e02664342
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/windows/embedded-opener.html
@@ -0,0 +1,32 @@
+
+opener and embedded documents; using window.open()
+
+
+

+
+
diff --git a/testing/web-platform/tests/html/browsers/windows/iframe-cross-origin-print.sub.html b/testing/web-platform/tests/html/browsers/windows/iframe-cross-origin-print.sub.html
new file mode 100644
index 0000000000..d07db13776
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/windows/iframe-cross-origin-print.sub.html
@@ -0,0 +1,6 @@
+
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/windows/iframe-cross-origin-scaled-print.sub.html b/testing/web-platform/tests/html/browsers/windows/iframe-cross-origin-scaled-print.sub.html
new file mode 100644
index 0000000000..2442563082
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/windows/iframe-cross-origin-scaled-print.sub.html
@@ -0,0 +1,17 @@
+
+
+
+

+
+

diff --git a/testing/web-platform/tests/html/browsers/windows/iframe-nested-print-ref.html b/testing/web-platform/tests/html/browsers/windows/iframe-nested-print-ref.html
new file mode 100644
index 0000000000..c36c459881
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/windows/iframe-nested-print-ref.html
@@ -0,0 +1,9 @@
+
+
+
PASS
diff --git a/testing/web-platform/tests/html/browsers/windows/iframe-nested-print.html b/testing/web-platform/tests/html/browsers/windows/iframe-nested-print.html
new file mode 100644
index 0000000000..844f6ba373
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/windows/iframe-nested-print.html
@@ -0,0 +1,6 @@
+
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/windows/iframe-nested-scaled-print-ref.html b/testing/web-platform/tests/html/browsers/windows/iframe-nested-scaled-print-ref.html
new file mode 100644
index 0000000000..fceaf1e52c
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/windows/iframe-nested-scaled-print-ref.html
@@ -0,0 +1,15 @@
+
+
+

+
+

diff --git a/testing/web-platform/tests/html/browsers/windows/nested-browsing-contexts/frameElement-siblings.sub.html b/testing/web-platform/tests/html/browsers/windows/nested-browsing-contexts/frameElement-siblings.sub.html
new file mode 100644
index 0000000000..0c814d26d9
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/windows/nested-browsing-contexts/frameElement-siblings.sub.html
@@ -0,0 +1,42 @@
+
+
+window.frameElement access to a same-origin-domain sibling
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/windows/nested-browsing-contexts/frameElement.sub.html b/testing/web-platform/tests/html/browsers/windows/nested-browsing-contexts/frameElement.sub.html
new file mode 100644
index 0000000000..7ea1182081
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/windows/nested-browsing-contexts/frameElement.sub.html
@@ -0,0 +1,66 @@
+
+
+  
+    
+    HTML Test: window.frameElement
+    
+    
+    
+  
+  
+    
+    
+    
+    
+    
+
+    
+    
+
+    
+    
+
+    
+  
+
diff --git a/testing/web-platform/tests/html/browsers/windows/nested-browsing-contexts/name-attribute.window.js b/testing/web-platform/tests/html/browsers/windows/nested-browsing-contexts/name-attribute.window.js
new file mode 100644
index 0000000000..69908af71b
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/windows/nested-browsing-contexts/name-attribute.window.js
@@ -0,0 +1,58 @@
+// META: script=/common/get-host-info.sub.js
+
+[
+  "frame", // This works without , so great
+  "iframe",
+  "object",
+  "embed",
+].forEach(element => {
+  [
+    null,
+    "",
+    "initialvalue"
+  ].forEach(initialNameValue => {
+    [
+      "same-origin",
+      "cross-origin"
+    ].forEach(originType => {
+      async_test(t => {
+        const ident = element + initialNameValue + originType,
+              file = `${new URL("resources/post-to-parent.html", location.href).pathname}?ident=${ident}`,
+              child = originType === "same-origin" ? file : `${get_host_info().HTTP_REMOTE_ORIGIN}${file}`,
+              frame = document.createElement(element),
+              expectedNameValue = initialNameValue || "";
+        let state = "set";
+        const listener = t.step_func(e => {
+          if (e.data.ident === ident) {
+            assert_equals(e.data.name, expectedNameValue); // This check is always the same
+            if (state === "set") {
+              frame.setAttribute("name", "meh");
+              state = "remove"
+              e.source.postMessage(null, "*");
+              return;
+            }
+            if (state === "remove") {
+              frame.removeAttribute("name");
+              state = "done";
+              e.source.postMessage(null, "*");
+              return;
+            }
+            if (state === "done") {
+              t.done();
+            }
+          }
+        });
+        frame.setAttribute(element === "object" ? "data" : "src", child);
+        if (initialNameValue !== null) {
+          frame.setAttribute("name", initialNameValue);
+        }
+        t.add_cleanup(() => {
+          self.removeEventListener("message", listener);
+          frame.remove();
+        });
+        self.addEventListener("message", listener);
+        document.body.append(frame);
+      }, `${originType} <${element}${initialNameValue !== null ? ' name=' + initialNameValue : ''}>`);
+    });
+  });
+});
diff --git a/testing/web-platform/tests/html/browsers/windows/nested-browsing-contexts/resources/frameElement-nested-frame.html b/testing/web-platform/tests/html/browsers/windows/nested-browsing-contexts/resources/frameElement-nested-frame.html
new file mode 100644
index 0000000000..d066b8d4cb
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/windows/nested-browsing-contexts/resources/frameElement-nested-frame.html
@@ -0,0 +1,7 @@
+
+
+HTML Test: child browsing context created by the frame element
+
+
+  
+
diff --git a/testing/web-platform/tests/html/browsers/windows/nested-browsing-contexts/resources/frameElement-sibling-accessed.html b/testing/web-platform/tests/html/browsers/windows/nested-browsing-contexts/resources/frameElement-sibling-accessed.html
new file mode 100644
index 0000000000..15245981ce
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/windows/nested-browsing-contexts/resources/frameElement-sibling-accessed.html
@@ -0,0 +1,16 @@
+
+
+This page will set its document.domain on request so that its sibling can access it
+
+
I did get loaded

+
+
diff --git a/testing/web-platform/tests/html/browsers/windows/nested-browsing-contexts/resources/frameElement-sibling-accessor.html b/testing/web-platform/tests/html/browsers/windows/nested-browsing-contexts/resources/frameElement-sibling-accessor.html
new file mode 100644
index 0000000000..4b4c7a87bb
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/windows/nested-browsing-contexts/resources/frameElement-sibling-accessor.html
@@ -0,0 +1,33 @@
+
+
+This page will attempt to access the frameElement of its sibling and report the results on request
+
+
I did get loaded

+
+
diff --git a/testing/web-platform/tests/html/browsers/windows/nested-browsing-contexts/resources/frameElement-window-post.html b/testing/web-platform/tests/html/browsers/windows/nested-browsing-contexts/resources/frameElement-window-post.html
new file mode 100644
index 0000000000..d67bde26f4
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/windows/nested-browsing-contexts/resources/frameElement-window-post.html
@@ -0,0 +1,14 @@
+
+
+Testcase 3: frameElement attribute must return null if the container\'s document does not have the same effective script origin
+
diff --git a/testing/web-platform/tests/html/browsers/windows/nested-browsing-contexts/resources/post-to-opener.html b/testing/web-platform/tests/html/browsers/windows/nested-browsing-contexts/resources/post-to-opener.html
new file mode 100644
index 0000000000..65a825f573
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/windows/nested-browsing-contexts/resources/post-to-opener.html
@@ -0,0 +1,7 @@
+
diff --git a/testing/web-platform/tests/html/browsers/windows/nested-browsing-contexts/resources/post-to-parent.html b/testing/web-platform/tests/html/browsers/windows/nested-browsing-contexts/resources/post-to-parent.html
new file mode 100644
index 0000000000..302e9d9cc1
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/windows/nested-browsing-contexts/resources/post-to-parent.html
@@ -0,0 +1,6 @@
+
diff --git a/testing/web-platform/tests/html/browsers/windows/nested-browsing-contexts/window-parent-null.html b/testing/web-platform/tests/html/browsers/windows/nested-browsing-contexts/window-parent-null.html
new file mode 100644
index 0000000000..428312086e
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/windows/nested-browsing-contexts/window-parent-null.html
@@ -0,0 +1,66 @@
+
+
+window.parent: `null`
+
+
+

+
diff --git a/testing/web-platform/tests/html/browsers/windows/nested-browsing-contexts/window-parent.html b/testing/web-platform/tests/html/browsers/windows/nested-browsing-contexts/window-parent.html
new file mode 100644
index 0000000000..ef662dca5e
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/windows/nested-browsing-contexts/window-parent.html
@@ -0,0 +1,44 @@
+
+
+window.parent
+
+
+

+
diff --git a/testing/web-platform/tests/html/browsers/windows/nested-browsing-contexts/window-top-null.html b/testing/web-platform/tests/html/browsers/windows/nested-browsing-contexts/window-top-null.html
new file mode 100644
index 0000000000..cf7fcf2ae1
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/windows/nested-browsing-contexts/window-top-null.html
@@ -0,0 +1,66 @@
+
+
+window.top: `null`
+
+
+

+
diff --git a/testing/web-platform/tests/html/browsers/windows/nested-browsing-contexts/window-top.html b/testing/web-platform/tests/html/browsers/windows/nested-browsing-contexts/window-top.html
new file mode 100644
index 0000000000..e5590adeb8
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/windows/nested-browsing-contexts/window-top.html
@@ -0,0 +1,65 @@
+
+
+window.top
+
+
+

+
diff --git a/testing/web-platform/tests/html/browsers/windows/noreferrer-cross-origin-close-manual.sub.html b/testing/web-platform/tests/html/browsers/windows/noreferrer-cross-origin-close-manual.sub.html
new file mode 100644
index 0000000000..8e2740c268
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/windows/noreferrer-cross-origin-close-manual.sub.html
@@ -0,0 +1,3 @@
+
+
Follow this link to open a new browsing context and then confirm it can be closed:
+link.
diff --git a/testing/web-platform/tests/html/browsers/windows/noreferrer-cross-origin-manual.html b/testing/web-platform/tests/html/browsers/windows/noreferrer-cross-origin-manual.html
new file mode 100644
index 0000000000..f5879ee6d7
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/windows/noreferrer-cross-origin-manual.html
@@ -0,0 +1,10 @@
+
    
+ 
  1. After clicking these two links in order a single browsing context should be open showing
+ example.org:
+ one,
+ two.
+
+ 
  2. After clicking these two links two browsing contexts should have been opened:
+ one,
+ two.
+

diff --git a/testing/web-platform/tests/html/browsers/windows/noreferrer-cross-origin-window-name-manual.sub.html b/testing/web-platform/tests/html/browsers/windows/noreferrer-cross-origin-window-name-manual.sub.html
new file mode 100644
index 0000000000..c598ffbfaa
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/windows/noreferrer-cross-origin-window-name-manual.sub.html
@@ -0,0 +1,3 @@
+
+
Follow this link to open a new browsing context and then confirm it says "idonteven":
+link.
diff --git a/testing/web-platform/tests/html/browsers/windows/noreferrer-null-opener.html b/testing/web-platform/tests/html/browsers/windows/noreferrer-null-opener.html
new file mode 100644
index 0000000000..f308abc05e
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/windows/noreferrer-null-opener.html
@@ -0,0 +1,25 @@
+
+rel=noreferrer nullifies window.opener
+
+
+

+
diff --git a/testing/web-platform/tests/html/browsers/windows/noreferrer-window-name.html b/testing/web-platform/tests/html/browsers/windows/noreferrer-window-name.html
new file mode 100644
index 0000000000..5fe649d172
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/windows/noreferrer-window-name.html
@@ -0,0 +1,86 @@
+
+rel=noreferrer and reuse of names
+
+
+
+

+
diff --git a/testing/web-platform/tests/html/browsers/windows/opener-cross-origin-manual.sub.html b/testing/web-platform/tests/html/browsers/windows/opener-cross-origin-manual.sub.html
new file mode 100644
index 0000000000..0c018663a2
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/windows/opener-cross-origin-manual.sub.html
@@ -0,0 +1,10 @@
+
    
+ 
  1. Clicking this link must navigate this page to a resource that contains "THE END":
+ test
+
+ 
  2. Clicking this link must open a new browsing context that is empty:
+ test
+
+ 
  3. Clicking this link must navigate this page to a resource that contains "THE END":
+ test
+

diff --git a/testing/web-platform/tests/html/browsers/windows/opener-string.window.js b/testing/web-platform/tests/html/browsers/windows/opener-string.window.js
new file mode 100644
index 0000000000..a39c584d20
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/windows/opener-string.window.js
@@ -0,0 +1,14 @@
+test(t => {
+  const popup = window.open();
+  t.add_cleanup(() => popup.close());
+  assert_equals(popup.opener, self, "The opener of the popup is me");
+  assert_equals(Object.getOwnPropertyDescriptor(popup, "opener").writable, undefined);
+
+  popup.opener = "blah";
+  assert_equals(popup.opener, "blah", "The popup's opener is now a string");
+  assert_equals(Object.getOwnPropertyDescriptor(popup, "opener").writable, true);
+
+  const openerGetter = Object.getOwnPropertyDescriptor(self, "opener").get;
+  const popupOpener = openerGetter.call(popup);
+  assert_equals(popupOpener, self, "The underlying opener of the popup is still me");
+}, "Setting popup.opener to a string");
diff --git a/testing/web-platform/tests/html/browsers/windows/post-message/first-party-to-first-party-cross-partition.sub.html b/testing/web-platform/tests/html/browsers/windows/post-message/first-party-to-first-party-cross-partition.sub.html
new file mode 100644
index 0000000000..f91d9403ea
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/windows/post-message/first-party-to-first-party-cross-partition.sub.html
@@ -0,0 +1,26 @@
+
+
+postMessage: First-Party to First-Party, Cross-Partition
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/windows/post-message/first-party-to-first-party-same-partition.html b/testing/web-platform/tests/html/browsers/windows/post-message/first-party-to-first-party-same-partition.html
new file mode 100644
index 0000000000..6fc915298b
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/windows/post-message/first-party-to-first-party-same-partition.html
@@ -0,0 +1,26 @@
+
+
+postMessage: First-Party to First-Party, Same-Partition
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/windows/post-message/first-party-to-third-party-cross-partition-cross-origin.sub.html b/testing/web-platform/tests/html/browsers/windows/post-message/first-party-to-third-party-cross-partition-cross-origin.sub.html
new file mode 100644
index 0000000000..de776f8381
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/windows/post-message/first-party-to-third-party-cross-partition-cross-origin.sub.html
@@ -0,0 +1,27 @@
+
+
+postMessage: First-Party to Third-Party, Cross-Partition, Cross-Origin
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/windows/post-message/first-party-to-third-party-cross-partition-same-origin.sub.html b/testing/web-platform/tests/html/browsers/windows/post-message/first-party-to-third-party-cross-partition-same-origin.sub.html
new file mode 100644
index 0000000000..490b647fa4
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/windows/post-message/first-party-to-third-party-cross-partition-same-origin.sub.html
@@ -0,0 +1,27 @@
+
+
+postMessage: First-Party to Third-Party, Cross-Partition, Same-Origin
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/windows/post-message/resources/first-party-to-first-party-cross-partition-window.html b/testing/web-platform/tests/html/browsers/windows/post-message/resources/first-party-to-first-party-cross-partition-window.html
new file mode 100644
index 0000000000..cdfa9d95ca
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/windows/post-message/resources/first-party-to-first-party-cross-partition-window.html
@@ -0,0 +1,8 @@
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/windows/post-message/resources/first-party-to-first-party-same-partition-window.html b/testing/web-platform/tests/html/browsers/windows/post-message/resources/first-party-to-first-party-same-partition-window.html
new file mode 100644
index 0000000000..4baf45d3c8
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/windows/post-message/resources/first-party-to-first-party-same-partition-window.html
@@ -0,0 +1,8 @@
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/windows/post-message/resources/first-party-to-third-party-cross-partition-cross-origin-iframe.https.html b/testing/web-platform/tests/html/browsers/windows/post-message/resources/first-party-to-third-party-cross-partition-cross-origin-iframe.https.html
new file mode 100644
index 0000000000..eef594831a
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/windows/post-message/resources/first-party-to-third-party-cross-partition-cross-origin-iframe.https.html
@@ -0,0 +1,8 @@
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/windows/post-message/resources/first-party-to-third-party-cross-partition-cross-origin-window.sub.https.html b/testing/web-platform/tests/html/browsers/windows/post-message/resources/first-party-to-third-party-cross-partition-cross-origin-window.sub.https.html
new file mode 100644
index 0000000000..7edfbd9328
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/windows/post-message/resources/first-party-to-third-party-cross-partition-cross-origin-window.sub.https.html
@@ -0,0 +1,6 @@
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/windows/post-message/resources/first-party-to-third-party-cross-partition-same-origin-iframe.html b/testing/web-platform/tests/html/browsers/windows/post-message/resources/first-party-to-third-party-cross-partition-same-origin-iframe.html
new file mode 100644
index 0000000000..eb17036c8c
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/windows/post-message/resources/first-party-to-third-party-cross-partition-same-origin-iframe.html
@@ -0,0 +1,8 @@
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/windows/post-message/resources/first-party-to-third-party-cross-partition-same-origin-window.sub.html b/testing/web-platform/tests/html/browsers/windows/post-message/resources/first-party-to-third-party-cross-partition-same-origin-window.sub.html
new file mode 100644
index 0000000000..f99b96c466
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/windows/post-message/resources/first-party-to-third-party-cross-partition-same-origin-window.sub.html
@@ -0,0 +1,6 @@
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/windows/post-message/resources/third-party-to-first-party-cross-partition-cross-origin-iframe.sub.html b/testing/web-platform/tests/html/browsers/windows/post-message/resources/third-party-to-first-party-cross-partition-cross-origin-iframe.sub.html
new file mode 100644
index 0000000000..348efb3f9c
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/windows/post-message/resources/third-party-to-first-party-cross-partition-cross-origin-iframe.sub.html
@@ -0,0 +1,17 @@
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/windows/post-message/resources/third-party-to-first-party-cross-partition-cross-origin-window.https.html b/testing/web-platform/tests/html/browsers/windows/post-message/resources/third-party-to-first-party-cross-partition-cross-origin-window.https.html
new file mode 100644
index 0000000000..0045909494
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/windows/post-message/resources/third-party-to-first-party-cross-partition-cross-origin-window.https.html
@@ -0,0 +1,8 @@
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/windows/post-message/resources/third-party-to-first-party-cross-partition-same-origin-iframe.sub.html b/testing/web-platform/tests/html/browsers/windows/post-message/resources/third-party-to-first-party-cross-partition-same-origin-iframe.sub.html
new file mode 100644
index 0000000000..405b1053d3
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/windows/post-message/resources/third-party-to-first-party-cross-partition-same-origin-iframe.sub.html
@@ -0,0 +1,17 @@
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/windows/post-message/resources/third-party-to-first-party-cross-partition-same-origin-window.html b/testing/web-platform/tests/html/browsers/windows/post-message/resources/third-party-to-first-party-cross-partition-same-origin-window.html
new file mode 100644
index 0000000000..0ae51e3fc1
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/windows/post-message/resources/third-party-to-first-party-cross-partition-same-origin-window.html
@@ -0,0 +1,8 @@
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/windows/post-message/resources/third-party-to-third-party-cross-partition-cross-origin-iframe-a.sub.html b/testing/web-platform/tests/html/browsers/windows/post-message/resources/third-party-to-third-party-cross-partition-cross-origin-iframe-a.sub.html
new file mode 100644
index 0000000000..a11f3640e8
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/windows/post-message/resources/third-party-to-third-party-cross-partition-cross-origin-iframe-a.sub.html
@@ -0,0 +1,17 @@
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/windows/post-message/resources/third-party-to-third-party-cross-partition-cross-origin-iframe-b.https.html b/testing/web-platform/tests/html/browsers/windows/post-message/resources/third-party-to-third-party-cross-partition-cross-origin-iframe-b.https.html
new file mode 100644
index 0000000000..f56e2b35d8
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/windows/post-message/resources/third-party-to-third-party-cross-partition-cross-origin-iframe-b.https.html
@@ -0,0 +1,8 @@
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/windows/post-message/resources/third-party-to-third-party-cross-partition-cross-origin-window.sub.https.html b/testing/web-platform/tests/html/browsers/windows/post-message/resources/third-party-to-third-party-cross-partition-cross-origin-window.sub.https.html
new file mode 100644
index 0000000000..1307287587
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/windows/post-message/resources/third-party-to-third-party-cross-partition-cross-origin-window.sub.https.html
@@ -0,0 +1,6 @@
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/windows/post-message/resources/third-party-to-third-party-cross-partition-same-origin-iframe-a.sub.https.html b/testing/web-platform/tests/html/browsers/windows/post-message/resources/third-party-to-third-party-cross-partition-same-origin-iframe-a.sub.https.html
new file mode 100644
index 0000000000..ec551bfdec
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/windows/post-message/resources/third-party-to-third-party-cross-partition-same-origin-iframe-a.sub.https.html
@@ -0,0 +1,17 @@
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/windows/post-message/resources/third-party-to-third-party-cross-partition-same-origin-iframe-b.https.html b/testing/web-platform/tests/html/browsers/windows/post-message/resources/third-party-to-third-party-cross-partition-same-origin-iframe-b.https.html
new file mode 100644
index 0000000000..fc15b1f125
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/windows/post-message/resources/third-party-to-third-party-cross-partition-same-origin-iframe-b.https.html
@@ -0,0 +1,8 @@
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/windows/post-message/resources/third-party-to-third-party-cross-partition-same-origin-window.sub.https.html b/testing/web-platform/tests/html/browsers/windows/post-message/resources/third-party-to-third-party-cross-partition-same-origin-window.sub.https.html
new file mode 100644
index 0000000000..f26f709db3
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/windows/post-message/resources/third-party-to-third-party-cross-partition-same-origin-window.sub.https.html
@@ -0,0 +1,6 @@
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/windows/post-message/resources/third-party-to-third-party-same-partition-iframe-a.sub.html b/testing/web-platform/tests/html/browsers/windows/post-message/resources/third-party-to-third-party-same-partition-iframe-a.sub.html
new file mode 100644
index 0000000000..339dc9f06e
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/windows/post-message/resources/third-party-to-third-party-same-partition-iframe-a.sub.html
@@ -0,0 +1,17 @@
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/windows/post-message/resources/third-party-to-third-party-same-partition-iframe-b.html b/testing/web-platform/tests/html/browsers/windows/post-message/resources/third-party-to-third-party-same-partition-iframe-b.html
new file mode 100644
index 0000000000..daaf236bfc
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/windows/post-message/resources/third-party-to-third-party-same-partition-iframe-b.html
@@ -0,0 +1,8 @@
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/windows/post-message/resources/third-party-to-third-party-same-partition-window.sub.html b/testing/web-platform/tests/html/browsers/windows/post-message/resources/third-party-to-third-party-same-partition-window.sub.html
new file mode 100644
index 0000000000..7cea58f235
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/windows/post-message/resources/third-party-to-third-party-same-partition-window.sub.html
@@ -0,0 +1,6 @@
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/windows/post-message/third-party-to-first-party-cross-partition-cross-origin.sub.html b/testing/web-platform/tests/html/browsers/windows/post-message/third-party-to-first-party-cross-partition-cross-origin.sub.html
new file mode 100644
index 0000000000..2618e966de
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/windows/post-message/third-party-to-first-party-cross-partition-cross-origin.sub.html
@@ -0,0 +1,29 @@
+
+
+postMessage: Third-Party to First-Party, Cross-Partition, Cross-Origin
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/windows/post-message/third-party-to-first-party-cross-partition-same-origin.sub.html b/testing/web-platform/tests/html/browsers/windows/post-message/third-party-to-first-party-cross-partition-same-origin.sub.html
new file mode 100644
index 0000000000..735b458841
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/windows/post-message/third-party-to-first-party-cross-partition-same-origin.sub.html
@@ -0,0 +1,29 @@
+
+
+postMessage: Third-Party to First-Party, Cross-Partition, Same-Origin
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/windows/post-message/third-party-to-third-party-cross-partition-cross-origin.sub.html b/testing/web-platform/tests/html/browsers/windows/post-message/third-party-to-third-party-cross-partition-cross-origin.sub.html
new file mode 100644
index 0000000000..1083071f7d
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/windows/post-message/third-party-to-third-party-cross-partition-cross-origin.sub.html
@@ -0,0 +1,30 @@
+
+
+postMessage: Third-Party to Third-Party, Cross-Partition, Cross-Origin
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/windows/post-message/third-party-to-third-party-cross-partition-same-origin.sub.html b/testing/web-platform/tests/html/browsers/windows/post-message/third-party-to-third-party-cross-partition-same-origin.sub.html
new file mode 100644
index 0000000000..9caf6c11e4
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/windows/post-message/third-party-to-third-party-cross-partition-same-origin.sub.html
@@ -0,0 +1,30 @@
+
+
+postMessage: Third-Party to Third-Party, Cross-Partition, Same-Origin
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/windows/post-message/third-party-to-third-party-same-partition.sub.html b/testing/web-platform/tests/html/browsers/windows/post-message/third-party-to-third-party-same-partition.sub.html
new file mode 100644
index 0000000000..c90a055268
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/windows/post-message/third-party-to-third-party-same-partition.sub.html
@@ -0,0 +1,30 @@
+
+
+postMessage: Third-Party to Third-Party, Same-Partition
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/windows/resources/browsing-context-window.html b/testing/web-platform/tests/html/browsers/windows/resources/browsing-context-window.html
new file mode 100644
index 0000000000..c1594f637e
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/windows/resources/browsing-context-window.html
@@ -0,0 +1,7 @@
+
diff --git a/testing/web-platform/tests/html/browsers/windows/resources/document-domain-setter.html b/testing/web-platform/tests/html/browsers/windows/resources/document-domain-setter.html
new file mode 100644
index 0000000000..3b14255571
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/windows/resources/document-domain-setter.html
@@ -0,0 +1,7 @@
+
+
+Helper page that sets document.domain
+
diff --git a/testing/web-platform/tests/html/browsers/windows/resources/echo-window-name.html b/testing/web-platform/tests/html/browsers/windows/resources/echo-window-name.html
new file mode 100644
index 0000000000..a437fecb2c
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/windows/resources/echo-window-name.html
@@ -0,0 +1 @@
+
diff --git a/testing/web-platform/tests/html/browsers/windows/resources/iframe-nested-cross-origin.html b/testing/web-platform/tests/html/browsers/windows/resources/iframe-nested-cross-origin.html
new file mode 100644
index 0000000000..a1a66ed842
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/windows/resources/iframe-nested-cross-origin.html
@@ -0,0 +1,2 @@
+
+
diff --git a/testing/web-platform/tests/html/browsers/windows/resources/iframe-nested-printing-pass.html b/testing/web-platform/tests/html/browsers/windows/resources/iframe-nested-printing-pass.html
new file mode 100644
index 0000000000..c2dca9185f
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/windows/resources/iframe-nested-printing-pass.html
@@ -0,0 +1,9 @@
+
+
+
+PASS
+
diff --git a/testing/web-platform/tests/html/browsers/windows/resources/message-parent.html b/testing/web-platform/tests/html/browsers/windows/resources/message-parent.html
new file mode 100644
index 0000000000..ba60618ad4
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/windows/resources/message-parent.html
@@ -0,0 +1,5 @@
+
diff --git a/testing/web-platform/tests/html/browsers/windows/resources/nested-post-to-opener.html b/testing/web-platform/tests/html/browsers/windows/resources/nested-post-to-opener.html
new file mode 100644
index 0000000000..e92b69d7e7
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/windows/resources/nested-post-to-opener.html
@@ -0,0 +1,12 @@
+
+
+
diff --git a/testing/web-platform/tests/html/browsers/windows/resources/noreferrer-window-name.html b/testing/web-platform/tests/html/browsers/windows/resources/noreferrer-window-name.html
new file mode 100644
index 0000000000..8c106ca886
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/windows/resources/noreferrer-window-name.html
@@ -0,0 +1,8 @@
+
diff --git a/testing/web-platform/tests/html/browsers/windows/resources/opener-cross-origin-embed.sub.html b/testing/web-platform/tests/html/browsers/windows/resources/opener-cross-origin-embed.sub.html
new file mode 100644
index 0000000000..db0c003141
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/windows/resources/opener-cross-origin-embed.sub.html
@@ -0,0 +1,2 @@
+
+
diff --git a/testing/web-platform/tests/html/browsers/windows/resources/opener-cross-origin-end.txt b/testing/web-platform/tests/html/browsers/windows/resources/opener-cross-origin-end.txt
new file mode 100644
index 0000000000..8b74fbab8a
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/windows/resources/opener-cross-origin-end.txt
@@ -0,0 +1 @@
+THE END
diff --git a/testing/web-platform/tests/html/browsers/windows/resources/opener-cross-origin.html b/testing/web-platform/tests/html/browsers/windows/resources/opener-cross-origin.html
new file mode 100644
index 0000000000..7c536b9213
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/windows/resources/opener-cross-origin.html
@@ -0,0 +1,4 @@
+
diff --git a/testing/web-platform/tests/html/browsers/windows/resources/post-to-opener.html b/testing/web-platform/tests/html/browsers/windows/resources/post-to-opener.html
new file mode 100644
index 0000000000..453fec97a7
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/windows/resources/post-to-opener.html
@@ -0,0 +1,8 @@
+
diff --git a/testing/web-platform/tests/html/browsers/windows/resources/restore-window-name-back.sub.html b/testing/web-platform/tests/html/browsers/windows/resources/restore-window-name-back.sub.html
new file mode 100644
index 0000000000..ea2c3a92b4
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/windows/resources/restore-window-name-back.sub.html
@@ -0,0 +1,7 @@
+
+
\ No newline at end of file
diff --git a/testing/web-platform/tests/html/browsers/windows/resources/restore-window-name.sub.html b/testing/web-platform/tests/html/browsers/windows/resources/restore-window-name.sub.html
new file mode 100644
index 0000000000..a1e573a7c0
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/windows/resources/restore-window-name.sub.html
@@ -0,0 +1,43 @@
+
+
+
+popup helper for restore window.name test
+
+
+
+  
Please first click the 'start test' link. And then, click the 'Verify Result' button to verify the result. You should get a PASS after clicking the button

+  start test

+  
+  Result: 
+
+
diff --git a/testing/web-platform/tests/html/browsers/windows/resources/target-cross-origin.sub.html b/testing/web-platform/tests/html/browsers/windows/resources/target-cross-origin.sub.html
new file mode 100644
index 0000000000..8472f96b90
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/windows/resources/target-cross-origin.sub.html
@@ -0,0 +1,3 @@
+
+
Follow this link to open a new browsing context in a separate origin.
+link.
diff --git a/testing/web-platform/tests/html/browsers/windows/resources/window-close-button.html b/testing/web-platform/tests/html/browsers/windows/resources/window-close-button.html
new file mode 100644
index 0000000000..38ec2aef5c
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/windows/resources/window-close-button.html
@@ -0,0 +1 @@
+
Clicking this button should close this browsing context: 
diff --git a/testing/web-platform/tests/html/browsers/windows/resources/window-name-stash.py b/testing/web-platform/tests/html/browsers/windows/resources/window-name-stash.py
new file mode 100644
index 0000000000..411a4587bc
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/windows/resources/window-name-stash.py
@@ -0,0 +1,13 @@
+def main(request, response):
+    key = request.GET.first(b"id")
+    if request.method == "POST":
+        value = request.GET.first(b"value")
+        request.server.stash.take(key)
+        request.server.stash.put(key, value)
+        return b"OK"
+    else:
+        value = request.server.stash.take(key)
+        if value is not None:
+            return value
+        else:
+            return b"NONE"
diff --git a/testing/web-platform/tests/html/browsers/windows/resources/window-name.sub.html b/testing/web-platform/tests/html/browsers/windows/resources/window-name.sub.html
new file mode 100644
index 0000000000..55fb8ebbbc
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/windows/resources/window-name.sub.html
@@ -0,0 +1,102 @@
+
+popup helper
+
diff --git a/testing/web-platform/tests/html/browsers/windows/resources/window-opener.html b/testing/web-platform/tests/html/browsers/windows/resources/window-opener.html
new file mode 100644
index 0000000000..c734eb3056
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/windows/resources/window-opener.html
@@ -0,0 +1,4 @@
+
diff --git a/testing/web-platform/tests/html/browsers/windows/restore-window-name-manual.https.html b/testing/web-platform/tests/html/browsers/windows/restore-window-name-manual.https.html
new file mode 100644
index 0000000000..13e8381e31
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/windows/restore-window-name-manual.https.html
@@ -0,0 +1,20 @@
+
+
+
+  Restore window.name when navigating back from a cross-origin
+  
+  
+  
+
+
+  
+  
Please click the following link and follow the instructions in the page for testing

+  run test
+
+
diff --git a/testing/web-platform/tests/html/browsers/windows/targeting-cross-origin-nested-browsing-contexts.html b/testing/web-platform/tests/html/browsers/windows/targeting-cross-origin-nested-browsing-contexts.html
new file mode 100644
index 0000000000..44d4fbad6b
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/windows/targeting-cross-origin-nested-browsing-contexts.html
@@ -0,0 +1,39 @@
+
+
+
+  
+  Targeting nested browsing contexts
+  
+  
+
+
+  
+  
+
+
diff --git a/testing/web-platform/tests/html/browsers/windows/targeting-multiple-cross-origin-manual.sub.html b/testing/web-platform/tests/html/browsers/windows/targeting-multiple-cross-origin-manual.sub.html
new file mode 100644
index 0000000000..c8f8cfbe29
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/windows/targeting-multiple-cross-origin-manual.sub.html
@@ -0,0 +1,9 @@
+
+
Follow this link to open a new browsing context in a separate origin. Follow the instructions
+in that new window, and then come back to this window.
+link.
+
+
Once you come back to this page, follow this link.
+link.
+
+
After clicking that link, you should have three additional windows open.
diff --git a/testing/web-platform/tests/html/browsers/windows/targeting-with-embedded-null-in-target.html b/testing/web-platform/tests/html/browsers/windows/targeting-with-embedded-null-in-target.html
new file mode 100644
index 0000000000..7407248ffe
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/windows/targeting-with-embedded-null-in-target.html
@@ -0,0 +1,34 @@
+
+
+
+  
+  Targeting with embedded null in target
+  
+  
+
+
+  
+  Click me
+  
+
+
diff --git a/testing/web-platform/tests/html/canvas/META.yml b/testing/web-platform/tests/html/canvas/META.yml
new file mode 100644
index 0000000000..0f79f25912
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/META.yml
@@ -0,0 +1,6 @@
+spec: https://html.spec.whatwg.org/multipage/canvas.html#2dcontext
+suggested_reviewers:
+  - AmeliaBR
+  - annevk
+  - kenrussell
+  - fserb
diff --git a/testing/web-platform/tests/html/canvas/README.md b/testing/web-platform/tests/html/canvas/README.md
new file mode 100644
index 0000000000..63f2246f2d
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/README.md
@@ -0,0 +1 @@
+To update the generated tests, run `wpt update-built --include canvas`.
diff --git a/testing/web-platform/tests/html/canvas/element/2d.conformance.requirements.basics.html b/testing/web-platform/tests/html/canvas/element/2d.conformance.requirements.basics.html
new file mode 100644
index 0000000000..fed4aa61ba
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/2d.conformance.requirements.basics.html
@@ -0,0 +1,62 @@
+
+
+Canvas test: 2d.conformance.requirements.basics
+
+
+
+
+
+
+
2d.conformance.requirements.basics

+
void methods return undefined

+
+
Defined in "Web IDL" (draft)
+
Actual output:

+
FAIL (fallback content)

+
+
    
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/2d.conformance.requirements.delete.html b/testing/web-platform/tests/html/canvas/element/2d.conformance.requirements.delete.html
new file mode 100644
index 0000000000..bfdf94319b
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/2d.conformance.requirements.delete.html
@@ -0,0 +1,29 @@
+
+
+Canvas test: 2d.conformance.requirements.delete
+
+
+
+
+
+
+
    2d.conformance.requirements.delete
    
+
    window.CanvasRenderingContext2D is Configurable
    
+
+
    Defined in "Web IDL" (draft)
+
    Actual output:
    
+
    FAIL (fallback content)
    
+
+
      
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/2d.conformance.requirements.drawings.html b/testing/web-platform/tests/html/canvas/element/2d.conformance.requirements.drawings.html
new file mode 100644
index 0000000000..40038b2191
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/2d.conformance.requirements.drawings.html
@@ -0,0 +1,28 @@
+
+
+Canvas test: 2d.conformance.requirements.drawings
+
+
+
+
+
+
+
      2d.conformance.requirements.drawings
      
+
      void methods return undefined
      
+
+
+
      Actual output:
      
+
      FAIL (fallback content)
      
+
+
        
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/2d.conformance.requirements.missingargs.html b/testing/web-platform/tests/html/canvas/element/2d.conformance.requirements.missingargs.html
new file mode 100644
index 0000000000..2ac3d58f4e
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/2d.conformance.requirements.missingargs.html
@@ -0,0 +1,141 @@
+
+
+Canvas test: 2d.conformance.requirements.missingargs
+
+
+
+
+
+
+
        2d.conformance.requirements.missingargs
        
+
        Missing arguments cause TypeError
        
+
+
+
        Actual output:
        
+
        FAIL (fallback content)
        
+
+
          
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/2d.text-outside-of-the-flat-tree-ref.html b/testing/web-platform/tests/html/canvas/element/2d.text-outside-of-the-flat-tree-ref.html
new file mode 100644
index 0000000000..707bafd320
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/2d.text-outside-of-the-flat-tree-ref.html
@@ -0,0 +1,9 @@
+
+Test reference
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/2d.text-outside-of-the-flat-tree.html b/testing/web-platform/tests/html/canvas/element/2d.text-outside-of-the-flat-tree.html
new file mode 100644
index 0000000000..cf76967a1e
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/2d.text-outside-of-the-flat-tree.html
@@ -0,0 +1,19 @@
+
+
+Canvas outside the flat tree
+
+
+
+
+
          
+
diff --git a/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.canvas.clear.html b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.canvas.clear.html
new file mode 100644
index 0000000000..40685597c9
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.canvas.clear.html
@@ -0,0 +1,38 @@
+
+
+Canvas test: 2d.composite.canvas.clear
+
+
+
+
+
+
+
          2d.composite.canvas.clear
          
+
          
+
+
+
          Actual output:
          
+
          FAIL (fallback content)
          
+
          Expected output:
          
+
            
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.canvas.clear.png b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.canvas.clear.png
new file mode 100644
index 0000000000..eeedd0ff05
Binary files /dev/null and b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.canvas.clear.png differ
diff --git a/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.canvas.copy.html b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.canvas.copy.html
new file mode 100644
index 0000000000..ac022f95e0
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.canvas.copy.html
@@ -0,0 +1,38 @@
+
+
+Canvas test: 2d.composite.canvas.copy
+
+
+
+
+
+
+
            2d.composite.canvas.copy
            
+
            
+
+
+
            Actual output:
            
+
            FAIL (fallback content)
            
+
            Expected output:
            
+
              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.canvas.copy.png b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.canvas.copy.png
new file mode 100644
index 0000000000..f5e9c21964
Binary files /dev/null and b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.canvas.copy.png differ
diff --git a/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.canvas.destination-atop.html b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.canvas.destination-atop.html
new file mode 100644
index 0000000000..29cf9bcc53
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.canvas.destination-atop.html
@@ -0,0 +1,38 @@
+
+
+Canvas test: 2d.composite.canvas.destination-atop
+
+
+
+
+
+
+
              2d.composite.canvas.destination-atop
              
+
              
+
+
+
              Actual output:
              
+
              FAIL (fallback content)
              
+
              Expected output:
              
+
                
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.canvas.destination-atop.png b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.canvas.destination-atop.png
new file mode 100644
index 0000000000..504b42756e
Binary files /dev/null and b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.canvas.destination-atop.png differ
diff --git a/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.canvas.destination-in.html b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.canvas.destination-in.html
new file mode 100644
index 0000000000..dc748df153
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.canvas.destination-in.html
@@ -0,0 +1,38 @@
+
+
+Canvas test: 2d.composite.canvas.destination-in
+
+
+
+
+
+
+
                2d.composite.canvas.destination-in
                
+
                
+
+
+
                Actual output:
                
+
                FAIL (fallback content)
                
+
                Expected output:
                
+
                  
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.canvas.destination-in.png b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.canvas.destination-in.png
new file mode 100644
index 0000000000..790e418a6b
Binary files /dev/null and b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.canvas.destination-in.png differ
diff --git a/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.canvas.destination-out.html b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.canvas.destination-out.html
new file mode 100644
index 0000000000..ebf33f3eba
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.canvas.destination-out.html
@@ -0,0 +1,38 @@
+
+
+Canvas test: 2d.composite.canvas.destination-out
+
+
+
+
+
+
+
                  2d.composite.canvas.destination-out
                  
+
                  
+
+
+
                  Actual output:
                  
+
                  FAIL (fallback content)
                  
+
                  Expected output:
                  
+
                    
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.canvas.destination-out.png b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.canvas.destination-out.png
new file mode 100644
index 0000000000..7f5ed1a836
Binary files /dev/null and b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.canvas.destination-out.png differ
diff --git a/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.canvas.destination-over.html b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.canvas.destination-over.html
new file mode 100644
index 0000000000..6727e324c6
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.canvas.destination-over.html
@@ -0,0 +1,38 @@
+
+
+Canvas test: 2d.composite.canvas.destination-over
+
+
+
+
+
+
+
                    2d.composite.canvas.destination-over
                    
+
                    
+
+
+
                    Actual output:
                    
+
                    FAIL (fallback content)
                    
+
                    Expected output:
                    
+
                      
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.canvas.destination-over.png b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.canvas.destination-over.png
new file mode 100644
index 0000000000..226390b2f8
Binary files /dev/null and b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.canvas.destination-over.png differ
diff --git a/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.canvas.lighter.html b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.canvas.lighter.html
new file mode 100644
index 0000000000..abb1fe0ea7
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.canvas.lighter.html
@@ -0,0 +1,38 @@
+
+
+Canvas test: 2d.composite.canvas.lighter
+
+
+
+
+
+
+
                      2d.composite.canvas.lighter
                      
+
                      
+
+
+
                      Actual output:
                      
+
                      FAIL (fallback content)
                      
+
                      Expected output:
                      
+
                        
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.canvas.lighter.png b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.canvas.lighter.png
new file mode 100644
index 0000000000..fc33f3301e
Binary files /dev/null and b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.canvas.lighter.png differ
diff --git a/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.canvas.source-atop.html b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.canvas.source-atop.html
new file mode 100644
index 0000000000..76ee7db053
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.canvas.source-atop.html
@@ -0,0 +1,38 @@
+
+
+Canvas test: 2d.composite.canvas.source-atop
+
+
+
+
+
+
+
                        2d.composite.canvas.source-atop
                        
+
                        
+
+
+
                        Actual output:
                        
+
                        FAIL (fallback content)
                        
+
                        Expected output:
                        
+
                          
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.canvas.source-atop.png b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.canvas.source-atop.png
new file mode 100644
index 0000000000..1ef9630195
Binary files /dev/null and b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.canvas.source-atop.png differ
diff --git a/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.canvas.source-in.html b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.canvas.source-in.html
new file mode 100644
index 0000000000..77cbb5e0a6
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.canvas.source-in.html
@@ -0,0 +1,38 @@
+
+
+Canvas test: 2d.composite.canvas.source-in
+
+
+
+
+
+
+
                          2d.composite.canvas.source-in
                          
+
                          
+
+
+
                          Actual output:
                          
+
                          FAIL (fallback content)
                          
+
                          Expected output:
                          
+
                            
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.canvas.source-in.png b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.canvas.source-in.png
new file mode 100644
index 0000000000..c26cdccf02
Binary files /dev/null and b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.canvas.source-in.png differ
diff --git a/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.canvas.source-out.html b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.canvas.source-out.html
new file mode 100644
index 0000000000..353dcd4438
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.canvas.source-out.html
@@ -0,0 +1,38 @@
+
+
+Canvas test: 2d.composite.canvas.source-out
+
+
+
+
+
+
+
                            2d.composite.canvas.source-out
                            
+
                            
+
+
+
                            Actual output:
                            
+
                            FAIL (fallback content)
                            
+
                            Expected output:
                            
+
                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.canvas.source-out.png b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.canvas.source-out.png
new file mode 100644
index 0000000000..c26cdccf02
Binary files /dev/null and b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.canvas.source-out.png differ
diff --git a/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.canvas.source-over.html b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.canvas.source-over.html
new file mode 100644
index 0000000000..06516cb751
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.canvas.source-over.html
@@ -0,0 +1,38 @@
+
+
+Canvas test: 2d.composite.canvas.source-over
+
+
+
+
+
+
+
                              2d.composite.canvas.source-over
                              
+
                              
+
+
+
                              Actual output:
                              
+
                              FAIL (fallback content)
                              
+
                              Expected output:
                              
+
                                
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.canvas.source-over.png b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.canvas.source-over.png
new file mode 100644
index 0000000000..e63ab7e308
Binary files /dev/null and b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.canvas.source-over.png differ
diff --git a/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.canvas.xor.html b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.canvas.xor.html
new file mode 100644
index 0000000000..3bc6eb5d79
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.canvas.xor.html
@@ -0,0 +1,38 @@
+
+
+Canvas test: 2d.composite.canvas.xor
+
+
+
+
+
+
+
                                2d.composite.canvas.xor
                                
+
                                
+
+
+
                                Actual output:
                                
+
                                FAIL (fallback content)
                                
+
                                Expected output:
                                
+
                                  
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.canvas.xor.png b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.canvas.xor.png
new file mode 100644
index 0000000000..1ef9630195
Binary files /dev/null and b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.canvas.xor.png differ
diff --git a/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.clip.clear.html b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.clip.clear.html
new file mode 100644
index 0000000000..1757870e99
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.clip.clear.html
@@ -0,0 +1,36 @@
+
+
+Canvas test: 2d.composite.clip.clear
+
+
+
+
+
+
+
                                  2d.composite.clip.clear
                                  
+
                                  fill() does not affect pixels outside the clip region.
                                  
+
+
+
                                  Actual output:
                                  
+
                                  FAIL (fallback content)
                                  
+
                                  Expected output:
                                  
+
                                    
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.clip.copy.html b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.clip.copy.html
new file mode 100644
index 0000000000..ace0618cca
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.clip.copy.html
@@ -0,0 +1,36 @@
+
+
+Canvas test: 2d.composite.clip.copy
+
+
+
+
+
+
+
                                    2d.composite.clip.copy
                                    
+
                                    fill() does not affect pixels outside the clip region.
                                    
+
+
+
                                    Actual output:
                                    
+
                                    FAIL (fallback content)
                                    
+
                                    Expected output:
                                    
+
                                      
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.clip.destination-atop.html b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.clip.destination-atop.html
new file mode 100644
index 0000000000..45301941d7
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.clip.destination-atop.html
@@ -0,0 +1,36 @@
+
+
+Canvas test: 2d.composite.clip.destination-atop
+
+
+
+
+
+
+
                                      2d.composite.clip.destination-atop
                                      
+
                                      fill() does not affect pixels outside the clip region.
                                      
+
+
+
                                      Actual output:
                                      
+
                                      FAIL (fallback content)
                                      
+
                                      Expected output:
                                      
+
                                        
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.clip.destination-in.html b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.clip.destination-in.html
new file mode 100644
index 0000000000..2ace910253
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.clip.destination-in.html
@@ -0,0 +1,36 @@
+
+
+Canvas test: 2d.composite.clip.destination-in
+
+
+
+
+
+
+
                                        2d.composite.clip.destination-in
                                        
+
                                        fill() does not affect pixels outside the clip region.
                                        
+
+
+
                                        Actual output:
                                        
+
                                        FAIL (fallback content)
                                        
+
                                        Expected output:
                                        
+
                                          
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.clip.destination-out.html b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.clip.destination-out.html
new file mode 100644
index 0000000000..4b3acf9b86
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.clip.destination-out.html
@@ -0,0 +1,36 @@
+
+
+Canvas test: 2d.composite.clip.destination-out
+
+
+
+
+
+
+
                                          2d.composite.clip.destination-out
                                          
+
                                          fill() does not affect pixels outside the clip region.
                                          
+
+
+
                                          Actual output:
                                          
+
                                          FAIL (fallback content)
                                          
+
                                          Expected output:
                                          
+
                                            
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.clip.destination-over.html b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.clip.destination-over.html
new file mode 100644
index 0000000000..0b1f9b5271
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.clip.destination-over.html
@@ -0,0 +1,36 @@
+
+
+Canvas test: 2d.composite.clip.destination-over
+
+
+
+
+
+
+
                                            2d.composite.clip.destination-over
                                            
+
                                            fill() does not affect pixels outside the clip region.
                                            
+
+
+
                                            Actual output:
                                            
+
                                            FAIL (fallback content)
                                            
+
                                            Expected output:
                                            
+
                                              
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.clip.lighter.html b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.clip.lighter.html
new file mode 100644
index 0000000000..4d2525d751
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.clip.lighter.html
@@ -0,0 +1,36 @@
+
+
+Canvas test: 2d.composite.clip.lighter
+
+
+
+
+
+
+
                                              2d.composite.clip.lighter
                                              
+
                                              fill() does not affect pixels outside the clip region.
                                              
+
+
+
                                              Actual output:
                                              
+
                                              FAIL (fallback content)
                                              
+
                                              Expected output:
                                              
+
                                                
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.clip.source-atop.html b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.clip.source-atop.html
new file mode 100644
index 0000000000..db722a8983
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.clip.source-atop.html
@@ -0,0 +1,36 @@
+
+
+Canvas test: 2d.composite.clip.source-atop
+
+
+
+
+
+
+
                                                2d.composite.clip.source-atop
                                                
+
                                                fill() does not affect pixels outside the clip region.
                                                
+
+
+
                                                Actual output:
                                                
+
                                                FAIL (fallback content)
                                                
+
                                                Expected output:
                                                
+
                                                  
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.clip.source-in.html b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.clip.source-in.html
new file mode 100644
index 0000000000..4347924052
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.clip.source-in.html
@@ -0,0 +1,36 @@
+
+
+Canvas test: 2d.composite.clip.source-in
+
+
+
+
+
+
+
                                                  2d.composite.clip.source-in
                                                  
+
                                                  fill() does not affect pixels outside the clip region.
                                                  
+
+
+
                                                  Actual output:
                                                  
+
                                                  FAIL (fallback content)
                                                  
+
                                                  Expected output:
                                                  
+
                                                    
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.clip.source-out.html b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.clip.source-out.html
new file mode 100644
index 0000000000..358dad372e
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.clip.source-out.html
@@ -0,0 +1,36 @@
+
+
+Canvas test: 2d.composite.clip.source-out
+
+
+
+
+
+
+
                                                    2d.composite.clip.source-out
                                                    
+
                                                    fill() does not affect pixels outside the clip region.
                                                    
+
+
+
                                                    Actual output:
                                                    
+
                                                    FAIL (fallback content)
                                                    
+
                                                    Expected output:
                                                    
+
                                                      
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.clip.source-over.html b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.clip.source-over.html
new file mode 100644
index 0000000000..542f889e7f
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.clip.source-over.html
@@ -0,0 +1,36 @@
+
+
+Canvas test: 2d.composite.clip.source-over
+
+
+
+
+
+
+
                                                      2d.composite.clip.source-over
                                                      
+
                                                      fill() does not affect pixels outside the clip region.
                                                      
+
+
+
                                                      Actual output:
                                                      
+
                                                      FAIL (fallback content)
                                                      
+
                                                      Expected output:
                                                      
+
                                                        
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.clip.xor.html b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.clip.xor.html
new file mode 100644
index 0000000000..edbf6b0be2
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.clip.xor.html
@@ -0,0 +1,36 @@
+
+
+Canvas test: 2d.composite.clip.xor
+
+
+
+
+
+
+
                                                        2d.composite.clip.xor
                                                        
+
                                                        fill() does not affect pixels outside the clip region.
                                                        
+
+
+
                                                        Actual output:
                                                        
+
                                                        FAIL (fallback content)
                                                        
+
                                                        Expected output:
                                                        
+
                                                          
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.globalAlpha.canvas.html b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.globalAlpha.canvas.html
new file mode 100644
index 0000000000..525a56ebc9
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.globalAlpha.canvas.html
@@ -0,0 +1,38 @@
+
+
+Canvas test: 2d.composite.globalAlpha.canvas
+
+
+
+
+
+
+
                                                          2d.composite.globalAlpha.canvas
                                                          
+
                                                          
+
+
+
                                                          Actual output:
                                                          
+
                                                          FAIL (fallback content)
                                                          
+
                                                          Expected output:
                                                          
+
                                                            
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.globalAlpha.canvascopy.html b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.globalAlpha.canvascopy.html
new file mode 100644
index 0000000000..17a46cfca2
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.globalAlpha.canvascopy.html
@@ -0,0 +1,39 @@
+
+
+Canvas test: 2d.composite.globalAlpha.canvascopy
+
+
+
+
+
+
+
                                                            2d.composite.globalAlpha.canvascopy
                                                            
+
                                                            
+
+
+
                                                            Actual output:
                                                            
+
                                                            FAIL (fallback content)
                                                            
+
                                                            Expected output:
                                                            
+
                                                              
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.globalAlpha.canvaspattern.html b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.globalAlpha.canvaspattern.html
new file mode 100644
index 0000000000..eea076c974
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.globalAlpha.canvaspattern.html
@@ -0,0 +1,39 @@
+
+
+Canvas test: 2d.composite.globalAlpha.canvaspattern
+
+
+
+
+
+
+
                                                              2d.composite.globalAlpha.canvaspattern
                                                              
+
                                                              
+
+
+
                                                              Actual output:
                                                              
+
                                                              FAIL (fallback content)
                                                              
+
                                                              Expected output:
                                                              
+
                                                                
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.globalAlpha.default.html b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.globalAlpha.default.html
new file mode 100644
index 0000000000..97cdf267c7
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.globalAlpha.default.html
@@ -0,0 +1,26 @@
+
+
+Canvas test: 2d.composite.globalAlpha.default
+
+
+
+
+
+
+
                                                                2d.composite.globalAlpha.default
                                                                
+
                                                                
+
+
+
                                                                Actual output:
                                                                
+
                                                                FAIL (fallback content)
                                                                
+
+
                                                                  
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.globalAlpha.fill.html b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.globalAlpha.fill.html
new file mode 100644
index 0000000000..5766fdbe77
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.globalAlpha.fill.html
@@ -0,0 +1,32 @@
+
+
+Canvas test: 2d.composite.globalAlpha.fill
+
+
+
+
+
+
+
                                                                  2d.composite.globalAlpha.fill
                                                                  
+
                                                                  
+
+
+
                                                                  Actual output:
                                                                  
+
                                                                  FAIL (fallback content)
                                                                  
+
                                                                  Expected output:
                                                                  
+
                                                                    
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.globalAlpha.image.html b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.globalAlpha.image.html
new file mode 100644
index 0000000000..5de1d5ff3e
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.globalAlpha.image.html
@@ -0,0 +1,37 @@
+
+
+Canvas test: 2d.composite.globalAlpha.image
+
+
+
+
+
+
+
                                                                    2d.composite.globalAlpha.image
                                                                    
+
                                                                    
+
+
+
                                                                    Actual output:
                                                                    
+
                                                                    FAIL (fallback content)
                                                                    
+
                                                                    Expected output:
                                                                    
+
                                                                      
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.globalAlpha.imagepattern.html b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.globalAlpha.imagepattern.html
new file mode 100644
index 0000000000..87e884524e
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.globalAlpha.imagepattern.html
@@ -0,0 +1,38 @@
+
+
+Canvas test: 2d.composite.globalAlpha.imagepattern
+
+
+
+
+
+
+
                                                                      2d.composite.globalAlpha.imagepattern
                                                                      
+
                                                                      
+
+
+
                                                                      Actual output:
                                                                      
+
                                                                      FAIL (fallback content)
                                                                      
+
                                                                      Expected output:
                                                                      
+
                                                                        
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.globalAlpha.invalid.html b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.globalAlpha.invalid.html
new file mode 100644
index 0000000000..db67f882f6
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.globalAlpha.invalid.html
@@ -0,0 +1,35 @@
+
+
+Canvas test: 2d.composite.globalAlpha.invalid
+
+
+
+
+
+
+
                                                                        2d.composite.globalAlpha.invalid
                                                                        
+
                                                                        
+
+
+
                                                                        Actual output:
                                                                        
+
                                                                        FAIL (fallback content)
                                                                        
+
+
                                                                          
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.globalAlpha.range.html b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.globalAlpha.range.html
new file mode 100644
index 0000000000..883b0cac69
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.globalAlpha.range.html
@@ -0,0 +1,38 @@
+
+
+Canvas test: 2d.composite.globalAlpha.range
+
+
+
+
+
+
+
                                                                          2d.composite.globalAlpha.range
                                                                          
+
                                                                          
+
+
+
                                                                          Actual output:
                                                                          
+
                                                                          FAIL (fallback content)
                                                                          
+
+
                                                                            
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.image.clear.html b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.image.clear.html
new file mode 100644
index 0000000000..b9ab69b838
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.image.clear.html
@@ -0,0 +1,33 @@
+
+
+Canvas test: 2d.composite.image.clear
+
+
+
+
+
+
+
                                                                            2d.composite.image.clear
                                                                            
+
                                                                            
+
+
+
                                                                            Actual output:
                                                                            
+
                                                                            FAIL (fallback content)
                                                                            
+
                                                                            Expected output:
                                                                            
+
                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.image.clear.png b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.image.clear.png
new file mode 100644
index 0000000000..eeedd0ff05
Binary files /dev/null and b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.image.clear.png differ
diff --git a/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.image.copy.html b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.image.copy.html
new file mode 100644
index 0000000000..f32e03bbae
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.image.copy.html
@@ -0,0 +1,33 @@
+
+
+Canvas test: 2d.composite.image.copy
+
+
+
+
+
+
+
                                                                              2d.composite.image.copy
                                                                              
+
                                                                              
+
+
+
                                                                              Actual output:
                                                                              
+
                                                                              FAIL (fallback content)
                                                                              
+
                                                                              Expected output:
                                                                              
+
                                                                                
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.image.copy.png b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.image.copy.png
new file mode 100644
index 0000000000..f5e9c21964
Binary files /dev/null and b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.image.copy.png differ
diff --git a/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.image.destination-atop.html b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.image.destination-atop.html
new file mode 100644
index 0000000000..2da0d198d0
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.image.destination-atop.html
@@ -0,0 +1,33 @@
+
+
+Canvas test: 2d.composite.image.destination-atop
+
+
+
+
+
+
+
                                                                                2d.composite.image.destination-atop
                                                                                
+
                                                                                
+
+
+
                                                                                Actual output:
                                                                                
+
                                                                                FAIL (fallback content)
                                                                                
+
                                                                                Expected output:
                                                                                
+
                                                                                  
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.image.destination-atop.png b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.image.destination-atop.png
new file mode 100644
index 0000000000..504b42756e
Binary files /dev/null and b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.image.destination-atop.png differ
diff --git a/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.image.destination-in.html b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.image.destination-in.html
new file mode 100644
index 0000000000..63871b2d8e
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.image.destination-in.html
@@ -0,0 +1,33 @@
+
+
+Canvas test: 2d.composite.image.destination-in
+
+
+
+
+
+
+
                                                                                  2d.composite.image.destination-in
                                                                                  
+
                                                                                  
+
+
+
                                                                                  Actual output:
                                                                                  
+
                                                                                  FAIL (fallback content)
                                                                                  
+
                                                                                  Expected output:
                                                                                  
+
                                                                                    
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.image.destination-in.png b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.image.destination-in.png
new file mode 100644
index 0000000000..790e418a6b
Binary files /dev/null and b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.image.destination-in.png differ
diff --git a/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.image.destination-out.html b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.image.destination-out.html
new file mode 100644
index 0000000000..3d96b191ec
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.image.destination-out.html
@@ -0,0 +1,33 @@
+
+
+Canvas test: 2d.composite.image.destination-out
+
+
+
+
+
+
+
                                                                                    2d.composite.image.destination-out
                                                                                    
+
                                                                                    
+
+
+
                                                                                    Actual output:
                                                                                    
+
                                                                                    FAIL (fallback content)
                                                                                    
+
                                                                                    Expected output:
                                                                                    
+
                                                                                      
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.image.destination-out.png b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.image.destination-out.png
new file mode 100644
index 0000000000..7f5ed1a836
Binary files /dev/null and b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.image.destination-out.png differ
diff --git a/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.image.destination-over.html b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.image.destination-over.html
new file mode 100644
index 0000000000..8e3dafb635
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.image.destination-over.html
@@ -0,0 +1,33 @@
+
+
+Canvas test: 2d.composite.image.destination-over
+
+
+
+
+
+
+
                                                                                      2d.composite.image.destination-over
                                                                                      
+
                                                                                      
+
+
+
                                                                                      Actual output:
                                                                                      
+
                                                                                      FAIL (fallback content)
                                                                                      
+
                                                                                      Expected output:
                                                                                      
+
                                                                                        
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.image.destination-over.png b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.image.destination-over.png
new file mode 100644
index 0000000000..226390b2f8
Binary files /dev/null and b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.image.destination-over.png differ
diff --git a/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.image.lighter.html b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.image.lighter.html
new file mode 100644
index 0000000000..6271a77594
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.image.lighter.html
@@ -0,0 +1,33 @@
+
+
+Canvas test: 2d.composite.image.lighter
+
+
+
+
+
+
+
                                                                                        2d.composite.image.lighter
                                                                                        
+
                                                                                        
+
+
+
                                                                                        Actual output:
                                                                                        
+
                                                                                        FAIL (fallback content)
                                                                                        
+
                                                                                        Expected output:
                                                                                        
+
                                                                                          
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.image.lighter.png b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.image.lighter.png
new file mode 100644
index 0000000000..fc33f3301e
Binary files /dev/null and b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.image.lighter.png differ
diff --git a/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.image.source-atop.html b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.image.source-atop.html
new file mode 100644
index 0000000000..eb7d75449d
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.image.source-atop.html
@@ -0,0 +1,33 @@
+
+
+Canvas test: 2d.composite.image.source-atop
+
+
+
+
+
+
+
                                                                                          2d.composite.image.source-atop
                                                                                          
+
                                                                                          
+
+
+
                                                                                          Actual output:
                                                                                          
+
                                                                                          FAIL (fallback content)
                                                                                          
+
                                                                                          Expected output:
                                                                                          
+
                                                                                            
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.image.source-atop.png b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.image.source-atop.png
new file mode 100644
index 0000000000..1ef9630195
Binary files /dev/null and b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.image.source-atop.png differ
diff --git a/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.image.source-in.html b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.image.source-in.html
new file mode 100644
index 0000000000..0f2fdad979
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.image.source-in.html
@@ -0,0 +1,33 @@
+
+
+Canvas test: 2d.composite.image.source-in
+
+
+
+
+
+
+
                                                                                            2d.composite.image.source-in
                                                                                            
+
                                                                                            
+
+
+
                                                                                            Actual output:
                                                                                            
+
                                                                                            FAIL (fallback content)
                                                                                            
+
                                                                                            Expected output:
                                                                                            
+
                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.image.source-in.png b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.image.source-in.png
new file mode 100644
index 0000000000..c26cdccf02
Binary files /dev/null and b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.image.source-in.png differ
diff --git a/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.image.source-out.html b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.image.source-out.html
new file mode 100644
index 0000000000..fd920855d4
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.image.source-out.html
@@ -0,0 +1,33 @@
+
+
+Canvas test: 2d.composite.image.source-out
+
+
+
+
+
+
+
                                                                                              2d.composite.image.source-out
                                                                                              
+
                                                                                              
+
+
+
                                                                                              Actual output:
                                                                                              
+
                                                                                              FAIL (fallback content)
                                                                                              
+
                                                                                              Expected output:
                                                                                              
+
                                                                                                
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.image.source-out.png b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.image.source-out.png
new file mode 100644
index 0000000000..c26cdccf02
Binary files /dev/null and b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.image.source-out.png differ
diff --git a/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.image.source-over.html b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.image.source-over.html
new file mode 100644
index 0000000000..ce5b6c631b
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.image.source-over.html
@@ -0,0 +1,33 @@
+
+
+Canvas test: 2d.composite.image.source-over
+
+
+
+
+
+
+
                                                                                                2d.composite.image.source-over
                                                                                                
+
                                                                                                
+
+
+
                                                                                                Actual output:
                                                                                                
+
                                                                                                FAIL (fallback content)
                                                                                                
+
                                                                                                Expected output:
                                                                                                
+
                                                                                                  
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.image.source-over.png b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.image.source-over.png
new file mode 100644
index 0000000000..e63ab7e308
Binary files /dev/null and b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.image.source-over.png differ
diff --git a/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.image.xor.html b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.image.xor.html
new file mode 100644
index 0000000000..68ce901d2a
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.image.xor.html
@@ -0,0 +1,33 @@
+
+
+Canvas test: 2d.composite.image.xor
+
+
+
+
+
+
+
                                                                                                  2d.composite.image.xor
                                                                                                  
+
                                                                                                  
+
+
+
                                                                                                  Actual output:
                                                                                                  
+
                                                                                                  FAIL (fallback content)
                                                                                                  
+
                                                                                                  Expected output:
                                                                                                  
+
                                                                                                    
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.image.xor.png b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.image.xor.png
new file mode 100644
index 0000000000..1ef9630195
Binary files /dev/null and b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.image.xor.png differ
diff --git a/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.operation.casesensitive.html b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.operation.casesensitive.html
new file mode 100644
index 0000000000..13ae99b35f
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.operation.casesensitive.html
@@ -0,0 +1,28 @@
+
+
+Canvas test: 2d.composite.operation.casesensitive
+
+
+
+
+
+
+
                                                                                                    2d.composite.operation.casesensitive
                                                                                                    
+
                                                                                                    
+
+
+
                                                                                                    Actual output:
                                                                                                    
+
                                                                                                    FAIL (fallback content)
                                                                                                    
+
+
                                                                                                      
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.operation.clear.html b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.operation.clear.html
new file mode 100644
index 0000000000..c1e88b4894
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.operation.clear.html
@@ -0,0 +1,28 @@
+
+
+Canvas test: 2d.composite.operation.clear
+
+
+
+
+
+
+
                                                                                                      2d.composite.operation.clear
                                                                                                      
+
                                                                                                      
+
+
+
                                                                                                      Actual output:
                                                                                                      
+
                                                                                                      FAIL (fallback content)
                                                                                                      
+
+
                                                                                                        
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.operation.darker.html b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.operation.darker.html
new file mode 100644
index 0000000000..4fb6998f71
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.operation.darker.html
@@ -0,0 +1,28 @@
+
+
+Canvas test: 2d.composite.operation.darker
+
+
+
+
+
+
+
                                                                                                        2d.composite.operation.darker
                                                                                                        
+
                                                                                                        
+
+
+
                                                                                                        Actual output:
                                                                                                        
+
                                                                                                        FAIL (fallback content)
                                                                                                        
+
+
                                                                                                          
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.operation.default.html b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.operation.default.html
new file mode 100644
index 0000000000..5ccd488b3c
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.operation.default.html
@@ -0,0 +1,26 @@
+
+
+Canvas test: 2d.composite.operation.default
+
+
+
+
+
+
+
                                                                                                          2d.composite.operation.default
                                                                                                          
+
                                                                                                          
+
+
+
                                                                                                          Actual output:
                                                                                                          
+
                                                                                                          FAIL (fallback content)
                                                                                                          
+
+
                                                                                                            
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.operation.get.html b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.operation.get.html
new file mode 100644
index 0000000000..27b89c9fed
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.operation.get.html
@@ -0,0 +1,33 @@
+
+
+Canvas test: 2d.composite.operation.get
+
+
+
+
+
+
+
                                                                                                            2d.composite.operation.get
                                                                                                            
+
                                                                                                            
+
+
+
                                                                                                            Actual output:
                                                                                                            
+
                                                                                                            FAIL (fallback content)
                                                                                                            
+
+
                                                                                                              
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.operation.highlight.html b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.operation.highlight.html
new file mode 100644
index 0000000000..45c5dd15eb
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.operation.highlight.html
@@ -0,0 +1,28 @@
+
+
+Canvas test: 2d.composite.operation.highlight
+
+
+
+
+
+
+
                                                                                                              2d.composite.operation.highlight
                                                                                                              
+
                                                                                                              
+
+
+
                                                                                                              Actual output:
                                                                                                              
+
                                                                                                              FAIL (fallback content)
                                                                                                              
+
+
                                                                                                                
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.operation.nullsuffix.html b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.operation.nullsuffix.html
new file mode 100644
index 0000000000..8a2443ff41
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.operation.nullsuffix.html
@@ -0,0 +1,28 @@
+
+
+Canvas test: 2d.composite.operation.nullsuffix
+
+
+
+
+
+
+
                                                                                                                2d.composite.operation.nullsuffix
                                                                                                                
+
                                                                                                                
+
+
+
                                                                                                                Actual output:
                                                                                                                
+
                                                                                                                FAIL (fallback content)
                                                                                                                
+
+
                                                                                                                  
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.operation.over.html b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.operation.over.html
new file mode 100644
index 0000000000..1d742ef3cc
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.operation.over.html
@@ -0,0 +1,28 @@
+
+
+Canvas test: 2d.composite.operation.over
+
+
+
+
+
+
+
                                                                                                                  2d.composite.operation.over
                                                                                                                  
+
                                                                                                                  
+
+
+
                                                                                                                  Actual output:
                                                                                                                  
+
                                                                                                                  FAIL (fallback content)
                                                                                                                  
+
+
                                                                                                                    
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.operation.unrecognised.html b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.operation.unrecognised.html
new file mode 100644
index 0000000000..e4aa877d96
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.operation.unrecognised.html
@@ -0,0 +1,28 @@
+
+
+Canvas test: 2d.composite.operation.unrecognised
+
+
+
+
+
+
+
                                                                                                                    2d.composite.operation.unrecognised
                                                                                                                    
+
                                                                                                                    
+
+
+
                                                                                                                    Actual output:
                                                                                                                    
+
                                                                                                                    FAIL (fallback content)
                                                                                                                    
+
+
                                                                                                                      
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.solid.clear.html b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.solid.clear.html
new file mode 100644
index 0000000000..e270df33ab
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.solid.clear.html
@@ -0,0 +1,33 @@
+
+
+Canvas test: 2d.composite.solid.clear
+
+
+
+
+
+
+
                                                                                                                      2d.composite.solid.clear
                                                                                                                      
+
                                                                                                                      
+
+
+
                                                                                                                      Actual output:
                                                                                                                      
+
                                                                                                                      FAIL (fallback content)
                                                                                                                      
+
                                                                                                                      Expected output:
                                                                                                                      
+
                                                                                                                        
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.solid.clear.png b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.solid.clear.png
new file mode 100644
index 0000000000..eeedd0ff05
Binary files /dev/null and b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.solid.clear.png differ
diff --git a/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.solid.copy.html b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.solid.copy.html
new file mode 100644
index 0000000000..74d9ad5cc2
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.solid.copy.html
@@ -0,0 +1,33 @@
+
+
+Canvas test: 2d.composite.solid.copy
+
+
+
+
+
+
+
                                                                                                                        2d.composite.solid.copy
                                                                                                                        
+
                                                                                                                        
+
+
+
                                                                                                                        Actual output:
                                                                                                                        
+
                                                                                                                        FAIL (fallback content)
                                                                                                                        
+
                                                                                                                        Expected output:
                                                                                                                        
+
                                                                                                                          
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.solid.copy.png b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.solid.copy.png
new file mode 100644
index 0000000000..fc0883e74f
Binary files /dev/null and b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.solid.copy.png differ
diff --git a/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.solid.destination-atop.html b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.solid.destination-atop.html
new file mode 100644
index 0000000000..5e8f60474e
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.solid.destination-atop.html
@@ -0,0 +1,33 @@
+
+
+Canvas test: 2d.composite.solid.destination-atop
+
+
+
+
+
+
+
                                                                                                                          2d.composite.solid.destination-atop
                                                                                                                          
+
                                                                                                                          
+
+
+
                                                                                                                          Actual output:
                                                                                                                          
+
                                                                                                                          FAIL (fallback content)
                                                                                                                          
+
                                                                                                                          Expected output:
                                                                                                                          
+
                                                                                                                            
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.solid.destination-atop.png b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.solid.destination-atop.png
new file mode 100644
index 0000000000..dd04072baf
Binary files /dev/null and b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.solid.destination-atop.png differ
diff --git a/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.solid.destination-in.html b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.solid.destination-in.html
new file mode 100644
index 0000000000..246bdee545
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.solid.destination-in.html
@@ -0,0 +1,33 @@
+
+
+Canvas test: 2d.composite.solid.destination-in
+
+
+
+
+
+
+
                                                                                                                            2d.composite.solid.destination-in
                                                                                                                            
+
                                                                                                                            
+
+
+
                                                                                                                            Actual output:
                                                                                                                            
+
                                                                                                                            FAIL (fallback content)
                                                                                                                            
+
                                                                                                                            Expected output:
                                                                                                                            
+
                                                                                                                              
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.solid.destination-in.png b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.solid.destination-in.png
new file mode 100644
index 0000000000..dd04072baf
Binary files /dev/null and b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.solid.destination-in.png differ
diff --git a/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.solid.destination-out.html b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.solid.destination-out.html
new file mode 100644
index 0000000000..7227cf41d8
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.solid.destination-out.html
@@ -0,0 +1,33 @@
+
+
+Canvas test: 2d.composite.solid.destination-out
+
+
+
+
+
+
+
                                                                                                                              2d.composite.solid.destination-out
                                                                                                                              
+
                                                                                                                              
+
+
+
                                                                                                                              Actual output:
                                                                                                                              
+
                                                                                                                              FAIL (fallback content)
                                                                                                                              
+
                                                                                                                              Expected output:
                                                                                                                              
+
                                                                                                                                
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.solid.destination-out.png b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.solid.destination-out.png
new file mode 100644
index 0000000000..eeedd0ff05
Binary files /dev/null and b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.solid.destination-out.png differ
diff --git a/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.solid.destination-over.html b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.solid.destination-over.html
new file mode 100644
index 0000000000..48671cee5b
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.solid.destination-over.html
@@ -0,0 +1,33 @@
+
+
+Canvas test: 2d.composite.solid.destination-over
+
+
+
+
+
+
+
                                                                                                                                2d.composite.solid.destination-over
                                                                                                                                
+
                                                                                                                                
+
+
+
                                                                                                                                Actual output:
                                                                                                                                
+
                                                                                                                                FAIL (fallback content)
                                                                                                                                
+
                                                                                                                                Expected output:
                                                                                                                                
+
                                                                                                                                  
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.solid.destination-over.png b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.solid.destination-over.png
new file mode 100644
index 0000000000..dd04072baf
Binary files /dev/null and b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.solid.destination-over.png differ
diff --git a/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.solid.lighter.html b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.solid.lighter.html
new file mode 100644
index 0000000000..f869b6d1a9
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.solid.lighter.html
@@ -0,0 +1,33 @@
+
+
+Canvas test: 2d.composite.solid.lighter
+
+
+
+
+
+
+
                                                                                                                                  2d.composite.solid.lighter
                                                                                                                                  
+
                                                                                                                                  
+
+
+
                                                                                                                                  Actual output:
                                                                                                                                  
+
                                                                                                                                  FAIL (fallback content)
                                                                                                                                  
+
                                                                                                                                  Expected output:
                                                                                                                                  
+
                                                                                                                                    
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.solid.lighter.png b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.solid.lighter.png
new file mode 100644
index 0000000000..bf48767a88
Binary files /dev/null and b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.solid.lighter.png differ
diff --git a/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.solid.source-atop.html b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.solid.source-atop.html
new file mode 100644
index 0000000000..14041236d2
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.solid.source-atop.html
@@ -0,0 +1,33 @@
+
+
+Canvas test: 2d.composite.solid.source-atop
+
+
+
+
+
+
+
                                                                                                                                    2d.composite.solid.source-atop
                                                                                                                                    
+
                                                                                                                                    
+
+
+
                                                                                                                                    Actual output:
                                                                                                                                    
+
                                                                                                                                    FAIL (fallback content)
                                                                                                                                    
+
                                                                                                                                    Expected output:
                                                                                                                                    
+
                                                                                                                                      
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.solid.source-atop.png b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.solid.source-atop.png
new file mode 100644
index 0000000000..fc0883e74f
Binary files /dev/null and b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.solid.source-atop.png differ
diff --git a/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.solid.source-in.html b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.solid.source-in.html
new file mode 100644
index 0000000000..8f1cfcd16f
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.solid.source-in.html
@@ -0,0 +1,33 @@
+
+
+Canvas test: 2d.composite.solid.source-in
+
+
+
+
+
+
+
                                                                                                                                      2d.composite.solid.source-in
                                                                                                                                      
+
                                                                                                                                      
+
+
+
                                                                                                                                      Actual output:
                                                                                                                                      
+
                                                                                                                                      FAIL (fallback content)
                                                                                                                                      
+
                                                                                                                                      Expected output:
                                                                                                                                      
+
                                                                                                                                        
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.solid.source-in.png b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.solid.source-in.png
new file mode 100644
index 0000000000..fc0883e74f
Binary files /dev/null and b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.solid.source-in.png differ
diff --git a/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.solid.source-out.html b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.solid.source-out.html
new file mode 100644
index 0000000000..55522d54c2
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.solid.source-out.html
@@ -0,0 +1,33 @@
+
+
+Canvas test: 2d.composite.solid.source-out
+
+
+
+
+
+
+
                                                                                                                                        2d.composite.solid.source-out
                                                                                                                                        
+
                                                                                                                                        
+
+
+
                                                                                                                                        Actual output:
                                                                                                                                        
+
                                                                                                                                        FAIL (fallback content)
                                                                                                                                        
+
                                                                                                                                        Expected output:
                                                                                                                                        
+
                                                                                                                                          
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.solid.source-out.png b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.solid.source-out.png
new file mode 100644
index 0000000000..eeedd0ff05
Binary files /dev/null and b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.solid.source-out.png differ
diff --git a/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.solid.source-over.html b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.solid.source-over.html
new file mode 100644
index 0000000000..6194526396
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.solid.source-over.html
@@ -0,0 +1,33 @@
+
+
+Canvas test: 2d.composite.solid.source-over
+
+
+
+
+
+
+
                                                                                                                                          2d.composite.solid.source-over
                                                                                                                                          
+
                                                                                                                                          
+
+
+
                                                                                                                                          Actual output:
                                                                                                                                          
+
                                                                                                                                          FAIL (fallback content)
                                                                                                                                          
+
                                                                                                                                          Expected output:
                                                                                                                                          
+
                                                                                                                                            
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.solid.source-over.png b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.solid.source-over.png
new file mode 100644
index 0000000000..fc0883e74f
Binary files /dev/null and b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.solid.source-over.png differ
diff --git a/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.solid.xor.html b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.solid.xor.html
new file mode 100644
index 0000000000..431b8a3346
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.solid.xor.html
@@ -0,0 +1,33 @@
+
+
+Canvas test: 2d.composite.solid.xor
+
+
+
+
+
+
+
                                                                                                                                            2d.composite.solid.xor
                                                                                                                                            
+
                                                                                                                                            
+
+
+
                                                                                                                                            Actual output:
                                                                                                                                            
+
                                                                                                                                            FAIL (fallback content)
                                                                                                                                            
+
                                                                                                                                            Expected output:
                                                                                                                                            
+
                                                                                                                                              
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.solid.xor.png b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.solid.xor.png
new file mode 100644
index 0000000000..eeedd0ff05
Binary files /dev/null and b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.solid.xor.png differ
diff --git a/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.transparent.clear.html b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.transparent.clear.html
new file mode 100644
index 0000000000..606d925f10
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.transparent.clear.html
@@ -0,0 +1,33 @@
+
+
+Canvas test: 2d.composite.transparent.clear
+
+
+
+
+
+
+
                                                                                                                                              2d.composite.transparent.clear
                                                                                                                                              
+
                                                                                                                                              
+
+
+
                                                                                                                                              Actual output:
                                                                                                                                              
+
                                                                                                                                              FAIL (fallback content)
                                                                                                                                              
+
                                                                                                                                              Expected output:
                                                                                                                                              
+
                                                                                                                                                
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.transparent.clear.png b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.transparent.clear.png
new file mode 100644
index 0000000000..eeedd0ff05
Binary files /dev/null and b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.transparent.clear.png differ
diff --git a/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.transparent.copy.html b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.transparent.copy.html
new file mode 100644
index 0000000000..58673a12f8
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.transparent.copy.html
@@ -0,0 +1,33 @@
+
+
+Canvas test: 2d.composite.transparent.copy
+
+
+
+
+
+
+
                                                                                                                                                2d.composite.transparent.copy
                                                                                                                                                
+
                                                                                                                                                
+
+
+
                                                                                                                                                Actual output:
                                                                                                                                                
+
                                                                                                                                                FAIL (fallback content)
                                                                                                                                                
+
                                                                                                                                                Expected output:
                                                                                                                                                
+
                                                                                                                                                  
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.transparent.copy.png b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.transparent.copy.png
new file mode 100644
index 0000000000..b0cbe3a552
Binary files /dev/null and b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.transparent.copy.png differ
diff --git a/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.transparent.destination-atop.html b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.transparent.destination-atop.html
new file mode 100644
index 0000000000..4d22016fea
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.transparent.destination-atop.html
@@ -0,0 +1,33 @@
+
+
+Canvas test: 2d.composite.transparent.destination-atop
+
+
+
+
+
+
+
                                                                                                                                                  2d.composite.transparent.destination-atop
                                                                                                                                                  
+
                                                                                                                                                  
+
+
+
                                                                                                                                                  Actual output:
                                                                                                                                                  
+
                                                                                                                                                  FAIL (fallback content)
                                                                                                                                                  
+
                                                                                                                                                  Expected output:
                                                                                                                                                  
+
                                                                                                                                                    
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.transparent.destination-atop.png b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.transparent.destination-atop.png
new file mode 100644
index 0000000000..5db0a0484a
Binary files /dev/null and b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.transparent.destination-atop.png differ
diff --git a/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.transparent.destination-in.html b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.transparent.destination-in.html
new file mode 100644
index 0000000000..e946c72151
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.transparent.destination-in.html
@@ -0,0 +1,33 @@
+
+
+Canvas test: 2d.composite.transparent.destination-in
+
+
+
+
+
+
+
                                                                                                                                                    2d.composite.transparent.destination-in
                                                                                                                                                    
+
                                                                                                                                                    
+
+
+
                                                                                                                                                    Actual output:
                                                                                                                                                    
+
                                                                                                                                                    FAIL (fallback content)
                                                                                                                                                    
+
                                                                                                                                                    Expected output:
                                                                                                                                                    
+
                                                                                                                                                      
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.transparent.destination-in.png b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.transparent.destination-in.png
new file mode 100644
index 0000000000..c6895de985
Binary files /dev/null and b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.transparent.destination-in.png differ
diff --git a/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.transparent.destination-out.html b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.transparent.destination-out.html
new file mode 100644
index 0000000000..6e24825193
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.transparent.destination-out.html
@@ -0,0 +1,33 @@
+
+
+Canvas test: 2d.composite.transparent.destination-out
+
+
+
+
+
+
+
                                                                                                                                                      2d.composite.transparent.destination-out
                                                                                                                                                      
+
                                                                                                                                                      
+
+
+
                                                                                                                                                      Actual output:
                                                                                                                                                      
+
                                                                                                                                                      FAIL (fallback content)
                                                                                                                                                      
+
                                                                                                                                                      Expected output:
                                                                                                                                                      
+
                                                                                                                                                        
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.transparent.destination-out.png b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.transparent.destination-out.png
new file mode 100644
index 0000000000..873a9c45d8
Binary files /dev/null and b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.transparent.destination-out.png differ
diff --git a/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.transparent.destination-over.html b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.transparent.destination-over.html
new file mode 100644
index 0000000000..4c9c9fbc5f
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.transparent.destination-over.html
@@ -0,0 +1,33 @@
+
+
+Canvas test: 2d.composite.transparent.destination-over
+
+
+
+
+
+
+
                                                                                                                                                        2d.composite.transparent.destination-over
                                                                                                                                                        
+
                                                                                                                                                        
+
+
+
                                                                                                                                                        Actual output:
                                                                                                                                                        
+
                                                                                                                                                        FAIL (fallback content)
                                                                                                                                                        
+
                                                                                                                                                        Expected output:
                                                                                                                                                        
+
                                                                                                                                                          
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.transparent.destination-over.png b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.transparent.destination-over.png
new file mode 100644
index 0000000000..5a8726bbca
Binary files /dev/null and b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.transparent.destination-over.png differ
diff --git a/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.transparent.lighter.html b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.transparent.lighter.html
new file mode 100644
index 0000000000..4b3d148447
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.transparent.lighter.html
@@ -0,0 +1,33 @@
+
+
+Canvas test: 2d.composite.transparent.lighter
+
+
+
+
+
+
+
                                                                                                                                                          2d.composite.transparent.lighter
                                                                                                                                                          
+
                                                                                                                                                          
+
+
+
                                                                                                                                                          Actual output:
                                                                                                                                                          
+
                                                                                                                                                          FAIL (fallback content)
                                                                                                                                                          
+
                                                                                                                                                          Expected output:
                                                                                                                                                          
+
                                                                                                                                                            
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.transparent.lighter.png b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.transparent.lighter.png
new file mode 100644
index 0000000000..0e1c28c0cd
Binary files /dev/null and b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.transparent.lighter.png differ
diff --git a/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.transparent.source-atop.html b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.transparent.source-atop.html
new file mode 100644
index 0000000000..4b0987764a
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.transparent.source-atop.html
@@ -0,0 +1,33 @@
+
+
+Canvas test: 2d.composite.transparent.source-atop
+
+
+
+
+
+
+
                                                                                                                                                            2d.composite.transparent.source-atop
                                                                                                                                                            
+
                                                                                                                                                            
+
+
+
                                                                                                                                                            Actual output:
                                                                                                                                                            
+
                                                                                                                                                            FAIL (fallback content)
                                                                                                                                                            
+
                                                                                                                                                            Expected output:
                                                                                                                                                            
+
                                                                                                                                                              
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.transparent.source-atop.png b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.transparent.source-atop.png
new file mode 100644
index 0000000000..e0afff6b00
Binary files /dev/null and b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.transparent.source-atop.png differ
diff --git a/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.transparent.source-in.html b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.transparent.source-in.html
new file mode 100644
index 0000000000..236f01b49e
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.transparent.source-in.html
@@ -0,0 +1,33 @@
+
+
+Canvas test: 2d.composite.transparent.source-in
+
+
+
+
+
+
+
                                                                                                                                                              2d.composite.transparent.source-in
                                                                                                                                                              
+
                                                                                                                                                              
+
+
+
                                                                                                                                                              Actual output:
                                                                                                                                                              
+
                                                                                                                                                              FAIL (fallback content)
                                                                                                                                                              
+
                                                                                                                                                              Expected output:
                                                                                                                                                              
+
                                                                                                                                                                
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.transparent.source-in.png b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.transparent.source-in.png
new file mode 100644
index 0000000000..1459b5e54e
Binary files /dev/null and b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.transparent.source-in.png differ
diff --git a/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.transparent.source-out.html b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.transparent.source-out.html
new file mode 100644
index 0000000000..d597ff9e06
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.transparent.source-out.html
@@ -0,0 +1,33 @@
+
+
+Canvas test: 2d.composite.transparent.source-out
+
+
+
+
+
+
+
                                                                                                                                                                2d.composite.transparent.source-out
                                                                                                                                                                
+
                                                                                                                                                                
+
+
+
                                                                                                                                                                Actual output:
                                                                                                                                                                
+
                                                                                                                                                                FAIL (fallback content)
                                                                                                                                                                
+
                                                                                                                                                                Expected output:
                                                                                                                                                                
+
                                                                                                                                                                  
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.transparent.source-out.png b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.transparent.source-out.png
new file mode 100644
index 0000000000..1459b5e54e
Binary files /dev/null and b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.transparent.source-out.png differ
diff --git a/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.transparent.source-over.html b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.transparent.source-over.html
new file mode 100644
index 0000000000..e2f8a7f6f8
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.transparent.source-over.html
@@ -0,0 +1,33 @@
+
+
+Canvas test: 2d.composite.transparent.source-over
+
+
+
+
+
+
+
                                                                                                                                                                  2d.composite.transparent.source-over
                                                                                                                                                                  
+
                                                                                                                                                                  
+
+
+
                                                                                                                                                                  Actual output:
                                                                                                                                                                  
+
                                                                                                                                                                  FAIL (fallback content)
                                                                                                                                                                  
+
                                                                                                                                                                  Expected output:
                                                                                                                                                                  
+
                                                                                                                                                                    
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.transparent.source-over.png b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.transparent.source-over.png
new file mode 100644
index 0000000000..02acb7a861
Binary files /dev/null and b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.transparent.source-over.png differ
diff --git a/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.transparent.xor.html b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.transparent.xor.html
new file mode 100644
index 0000000000..83027e5520
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.transparent.xor.html
@@ -0,0 +1,33 @@
+
+
+Canvas test: 2d.composite.transparent.xor
+
+
+
+
+
+
+
                                                                                                                                                                    2d.composite.transparent.xor
                                                                                                                                                                    
+
                                                                                                                                                                    
+
+
+
                                                                                                                                                                    Actual output:
                                                                                                                                                                    
+
                                                                                                                                                                    FAIL (fallback content)
                                                                                                                                                                    
+
                                                                                                                                                                    Expected output:
                                                                                                                                                                    
+
                                                                                                                                                                      
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.transparent.xor.png b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.transparent.xor.png
new file mode 100644
index 0000000000..e0afff6b00
Binary files /dev/null and b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.transparent.xor.png differ
diff --git a/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.uncovered.fill.copy.html b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.uncovered.fill.copy.html
new file mode 100644
index 0000000000..cd443ae6aa
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.uncovered.fill.copy.html
@@ -0,0 +1,34 @@
+
+
+Canvas test: 2d.composite.uncovered.fill.copy
+
+
+
+
+
+
+
                                                                                                                                                                      2d.composite.uncovered.fill.copy
                                                                                                                                                                      
+
                                                                                                                                                                      fill() draws pixels not covered by the source object as (0,0,0,0), and does not leave the pixels unchanged.
                                                                                                                                                                      
+
+
+
                                                                                                                                                                      Actual output:
                                                                                                                                                                      
+
                                                                                                                                                                      FAIL (fallback content)
                                                                                                                                                                      
+
                                                                                                                                                                      Expected output:
                                                                                                                                                                      
+
                                                                                                                                                                        
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.uncovered.fill.copy.png b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.uncovered.fill.copy.png
new file mode 100644
index 0000000000..eeedd0ff05
Binary files /dev/null and b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.uncovered.fill.copy.png differ
diff --git a/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.uncovered.fill.destination-atop.html b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.uncovered.fill.destination-atop.html
new file mode 100644
index 0000000000..9182124ecf
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.uncovered.fill.destination-atop.html
@@ -0,0 +1,34 @@
+
+
+Canvas test: 2d.composite.uncovered.fill.destination-atop
+
+
+
+
+
+
+
                                                                                                                                                                        2d.composite.uncovered.fill.destination-atop
                                                                                                                                                                        
+
                                                                                                                                                                        fill() draws pixels not covered by the source object as (0,0,0,0), and does not leave the pixels unchanged.
                                                                                                                                                                        
+
+
+
                                                                                                                                                                        Actual output:
                                                                                                                                                                        
+
                                                                                                                                                                        FAIL (fallback content)
                                                                                                                                                                        
+
                                                                                                                                                                        Expected output:
                                                                                                                                                                        
+
                                                                                                                                                                          
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.uncovered.fill.destination-atop.png b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.uncovered.fill.destination-atop.png
new file mode 100644
index 0000000000..eeedd0ff05
Binary files /dev/null and b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.uncovered.fill.destination-atop.png differ
diff --git a/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.uncovered.fill.destination-in.html b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.uncovered.fill.destination-in.html
new file mode 100644
index 0000000000..7906c159d4
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.uncovered.fill.destination-in.html
@@ -0,0 +1,34 @@
+
+
+Canvas test: 2d.composite.uncovered.fill.destination-in
+
+
+
+
+
+
+
                                                                                                                                                                          2d.composite.uncovered.fill.destination-in
                                                                                                                                                                          
+
                                                                                                                                                                          fill() draws pixels not covered by the source object as (0,0,0,0), and does not leave the pixels unchanged.
                                                                                                                                                                          
+
+
+
                                                                                                                                                                          Actual output:
                                                                                                                                                                          
+
                                                                                                                                                                          FAIL (fallback content)
                                                                                                                                                                          
+
                                                                                                                                                                          Expected output:
                                                                                                                                                                          
+
                                                                                                                                                                            
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.uncovered.fill.destination-in.png b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.uncovered.fill.destination-in.png
new file mode 100644
index 0000000000..eeedd0ff05
Binary files /dev/null and b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.uncovered.fill.destination-in.png differ
diff --git a/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.uncovered.fill.source-in.html b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.uncovered.fill.source-in.html
new file mode 100644
index 0000000000..d46b7d4476
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.uncovered.fill.source-in.html
@@ -0,0 +1,34 @@
+
+
+Canvas test: 2d.composite.uncovered.fill.source-in
+
+
+
+
+
+
+
                                                                                                                                                                            2d.composite.uncovered.fill.source-in
                                                                                                                                                                            
+
                                                                                                                                                                            fill() draws pixels not covered by the source object as (0,0,0,0), and does not leave the pixels unchanged.
                                                                                                                                                                            
+
+
+
                                                                                                                                                                            Actual output:
                                                                                                                                                                            
+
                                                                                                                                                                            FAIL (fallback content)
                                                                                                                                                                            
+
                                                                                                                                                                            Expected output:
                                                                                                                                                                            
+
                                                                                                                                                                              
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.uncovered.fill.source-in.png b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.uncovered.fill.source-in.png
new file mode 100644
index 0000000000..eeedd0ff05
Binary files /dev/null and b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.uncovered.fill.source-in.png differ
diff --git a/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.uncovered.fill.source-out.html b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.uncovered.fill.source-out.html
new file mode 100644
index 0000000000..08a026496d
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.uncovered.fill.source-out.html
@@ -0,0 +1,34 @@
+
+
+Canvas test: 2d.composite.uncovered.fill.source-out
+
+
+
+
+
+
+
                                                                                                                                                                              2d.composite.uncovered.fill.source-out
                                                                                                                                                                              
+
                                                                                                                                                                              fill() draws pixels not covered by the source object as (0,0,0,0), and does not leave the pixels unchanged.
                                                                                                                                                                              
+
+
+
                                                                                                                                                                              Actual output:
                                                                                                                                                                              
+
                                                                                                                                                                              FAIL (fallback content)
                                                                                                                                                                              
+
                                                                                                                                                                              Expected output:
                                                                                                                                                                              
+
                                                                                                                                                                                
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.uncovered.fill.source-out.png b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.uncovered.fill.source-out.png
new file mode 100644
index 0000000000..eeedd0ff05
Binary files /dev/null and b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.uncovered.fill.source-out.png differ
diff --git a/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.uncovered.image.copy.html b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.uncovered.image.copy.html
new file mode 100644
index 0000000000..e909612a5f
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.uncovered.image.copy.html
@@ -0,0 +1,34 @@
+
+
+Canvas test: 2d.composite.uncovered.image.copy
+
+
+
+
+
+
+
                                                                                                                                                                                2d.composite.uncovered.image.copy
                                                                                                                                                                                
+
                                                                                                                                                                                drawImage() draws pixels not covered by the source object as (0,0,0,0), and does not leave the pixels unchanged.
                                                                                                                                                                                
+
+
+
                                                                                                                                                                                Actual output:
                                                                                                                                                                                
+
                                                                                                                                                                                FAIL (fallback content)
                                                                                                                                                                                
+
                                                                                                                                                                                Expected output:
                                                                                                                                                                                
+
                                                                                                                                                                                  
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.uncovered.image.copy.png b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.uncovered.image.copy.png
new file mode 100644
index 0000000000..eeedd0ff05
Binary files /dev/null and b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.uncovered.image.copy.png differ
diff --git a/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.uncovered.image.destination-atop.html b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.uncovered.image.destination-atop.html
new file mode 100644
index 0000000000..d257e2f2af
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.uncovered.image.destination-atop.html
@@ -0,0 +1,34 @@
+
+
+Canvas test: 2d.composite.uncovered.image.destination-atop
+
+
+
+
+
+
+
                                                                                                                                                                                  2d.composite.uncovered.image.destination-atop
                                                                                                                                                                                  
+
                                                                                                                                                                                  drawImage() draws pixels not covered by the source object as (0,0,0,0), and does not leave the pixels unchanged.
                                                                                                                                                                                  
+
+
+
                                                                                                                                                                                  Actual output:
                                                                                                                                                                                  
+
                                                                                                                                                                                  FAIL (fallback content)
                                                                                                                                                                                  
+
                                                                                                                                                                                  Expected output:
                                                                                                                                                                                  
+
                                                                                                                                                                                    
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.uncovered.image.destination-atop.png b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.uncovered.image.destination-atop.png
new file mode 100644
index 0000000000..eeedd0ff05
Binary files /dev/null and b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.uncovered.image.destination-atop.png differ
diff --git a/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.uncovered.image.destination-in.html b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.uncovered.image.destination-in.html
new file mode 100644
index 0000000000..c3e3bc0c47
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.uncovered.image.destination-in.html
@@ -0,0 +1,34 @@
+
+
+Canvas test: 2d.composite.uncovered.image.destination-in
+
+
+
+
+
+
+
                                                                                                                                                                                    2d.composite.uncovered.image.destination-in
                                                                                                                                                                                    
+
                                                                                                                                                                                    drawImage() draws pixels not covered by the source object as (0,0,0,0), and does not leave the pixels unchanged.
                                                                                                                                                                                    
+
+
+
                                                                                                                                                                                    Actual output:
                                                                                                                                                                                    
+
                                                                                                                                                                                    FAIL (fallback content)
                                                                                                                                                                                    
+
                                                                                                                                                                                    Expected output:
                                                                                                                                                                                    
+
                                                                                                                                                                                      
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.uncovered.image.destination-in.png b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.uncovered.image.destination-in.png
new file mode 100644
index 0000000000..eeedd0ff05
Binary files /dev/null and b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.uncovered.image.destination-in.png differ
diff --git a/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.uncovered.image.source-in.html b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.uncovered.image.source-in.html
new file mode 100644
index 0000000000..fbcb3c23df
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.uncovered.image.source-in.html
@@ -0,0 +1,34 @@
+
+
+Canvas test: 2d.composite.uncovered.image.source-in
+
+
+
+
+
+
+
                                                                                                                                                                                      2d.composite.uncovered.image.source-in
                                                                                                                                                                                      
+
                                                                                                                                                                                      drawImage() draws pixels not covered by the source object as (0,0,0,0), and does not leave the pixels unchanged.
                                                                                                                                                                                      
+
+
+
                                                                                                                                                                                      Actual output:
                                                                                                                                                                                      
+
                                                                                                                                                                                      FAIL (fallback content)
                                                                                                                                                                                      
+
                                                                                                                                                                                      Expected output:
                                                                                                                                                                                      
+
                                                                                                                                                                                        
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.uncovered.image.source-in.png b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.uncovered.image.source-in.png
new file mode 100644
index 0000000000..eeedd0ff05
Binary files /dev/null and b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.uncovered.image.source-in.png differ
diff --git a/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.uncovered.image.source-out.html b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.uncovered.image.source-out.html
new file mode 100644
index 0000000000..03979e6ffe
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.uncovered.image.source-out.html
@@ -0,0 +1,34 @@
+
+
+Canvas test: 2d.composite.uncovered.image.source-out
+
+
+
+
+
+
+
                                                                                                                                                                                        2d.composite.uncovered.image.source-out
                                                                                                                                                                                        
+
                                                                                                                                                                                        drawImage() draws pixels not covered by the source object as (0,0,0,0), and does not leave the pixels unchanged.
                                                                                                                                                                                        
+
+
+
                                                                                                                                                                                        Actual output:
                                                                                                                                                                                        
+
                                                                                                                                                                                        FAIL (fallback content)
                                                                                                                                                                                        
+
                                                                                                                                                                                        Expected output:
                                                                                                                                                                                        
+
                                                                                                                                                                                          
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.uncovered.image.source-out.png b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.uncovered.image.source-out.png
new file mode 100644
index 0000000000..eeedd0ff05
Binary files /dev/null and b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.uncovered.image.source-out.png differ
diff --git a/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.uncovered.nocontext.copy.html b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.uncovered.nocontext.copy.html
new file mode 100644
index 0000000000..4bdf1d2176
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.uncovered.nocontext.copy.html
@@ -0,0 +1,33 @@
+
+
+Canvas test: 2d.composite.uncovered.nocontext.copy
+
+
+
+
+
+
+
                                                                                                                                                                                          2d.composite.uncovered.nocontext.copy
                                                                                                                                                                                          
+
                                                                                                                                                                                          drawImage() of a canvas with no context draws pixels as (0,0,0,0), and does not leave the pixels unchanged.
                                                                                                                                                                                          
+
+
+
                                                                                                                                                                                          Actual output:
                                                                                                                                                                                          
+
                                                                                                                                                                                          FAIL (fallback content)
                                                                                                                                                                                          
+
                                                                                                                                                                                          Expected output:
                                                                                                                                                                                          
+
                                                                                                                                                                                            
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.uncovered.nocontext.copy.png b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.uncovered.nocontext.copy.png
new file mode 100644
index 0000000000..eeedd0ff05
Binary files /dev/null and b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.uncovered.nocontext.copy.png differ
diff --git a/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.uncovered.nocontext.destination-atop.html b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.uncovered.nocontext.destination-atop.html
new file mode 100644
index 0000000000..093b682953
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.uncovered.nocontext.destination-atop.html
@@ -0,0 +1,33 @@
+
+
+Canvas test: 2d.composite.uncovered.nocontext.destination-atop
+
+
+
+
+
+
+
                                                                                                                                                                                            2d.composite.uncovered.nocontext.destination-atop
                                                                                                                                                                                            
+
                                                                                                                                                                                            drawImage() of a canvas with no context draws pixels as (0,0,0,0), and does not leave the pixels unchanged.
                                                                                                                                                                                            
+
+
+
                                                                                                                                                                                            Actual output:
                                                                                                                                                                                            
+
                                                                                                                                                                                            FAIL (fallback content)
                                                                                                                                                                                            
+
                                                                                                                                                                                            Expected output:
                                                                                                                                                                                            
+
                                                                                                                                                                                              
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.uncovered.nocontext.destination-atop.png b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.uncovered.nocontext.destination-atop.png
new file mode 100644
index 0000000000..eeedd0ff05
Binary files /dev/null and b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.uncovered.nocontext.destination-atop.png differ
diff --git a/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.uncovered.nocontext.destination-in.html b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.uncovered.nocontext.destination-in.html
new file mode 100644
index 0000000000..dc613bd061
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.uncovered.nocontext.destination-in.html
@@ -0,0 +1,33 @@
+
+
+Canvas test: 2d.composite.uncovered.nocontext.destination-in
+
+
+
+
+
+
+
                                                                                                                                                                                              2d.composite.uncovered.nocontext.destination-in
                                                                                                                                                                                              
+
                                                                                                                                                                                              drawImage() of a canvas with no context draws pixels as (0,0,0,0), and does not leave the pixels unchanged.
                                                                                                                                                                                              
+
+
+
                                                                                                                                                                                              Actual output:
                                                                                                                                                                                              
+
                                                                                                                                                                                              FAIL (fallback content)
                                                                                                                                                                                              
+
                                                                                                                                                                                              Expected output:
                                                                                                                                                                                              
+
                                                                                                                                                                                                
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.uncovered.nocontext.destination-in.png b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.uncovered.nocontext.destination-in.png
new file mode 100644
index 0000000000..eeedd0ff05
Binary files /dev/null and b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.uncovered.nocontext.destination-in.png differ
diff --git a/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.uncovered.nocontext.source-in.html b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.uncovered.nocontext.source-in.html
new file mode 100644
index 0000000000..6616b4ebe4
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.uncovered.nocontext.source-in.html
@@ -0,0 +1,33 @@
+
+
+Canvas test: 2d.composite.uncovered.nocontext.source-in
+
+
+
+
+
+
+
                                                                                                                                                                                                2d.composite.uncovered.nocontext.source-in
                                                                                                                                                                                                
+
                                                                                                                                                                                                drawImage() of a canvas with no context draws pixels as (0,0,0,0), and does not leave the pixels unchanged.
                                                                                                                                                                                                
+
+
+
                                                                                                                                                                                                Actual output:
                                                                                                                                                                                                
+
                                                                                                                                                                                                FAIL (fallback content)
                                                                                                                                                                                                
+
                                                                                                                                                                                                Expected output:
                                                                                                                                                                                                
+
                                                                                                                                                                                                  
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.uncovered.nocontext.source-in.png b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.uncovered.nocontext.source-in.png
new file mode 100644
index 0000000000..eeedd0ff05
Binary files /dev/null and b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.uncovered.nocontext.source-in.png differ
diff --git a/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.uncovered.nocontext.source-out.html b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.uncovered.nocontext.source-out.html
new file mode 100644
index 0000000000..fe2d70f258
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.uncovered.nocontext.source-out.html
@@ -0,0 +1,33 @@
+
+
+Canvas test: 2d.composite.uncovered.nocontext.source-out
+
+
+
+
+
+
+
                                                                                                                                                                                                  2d.composite.uncovered.nocontext.source-out
                                                                                                                                                                                                  
+
                                                                                                                                                                                                  drawImage() of a canvas with no context draws pixels as (0,0,0,0), and does not leave the pixels unchanged.
                                                                                                                                                                                                  
+
+
+
                                                                                                                                                                                                  Actual output:
                                                                                                                                                                                                  
+
                                                                                                                                                                                                  FAIL (fallback content)
                                                                                                                                                                                                  
+
                                                                                                                                                                                                  Expected output:
                                                                                                                                                                                                  
+
                                                                                                                                                                                                    
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.uncovered.nocontext.source-out.png b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.uncovered.nocontext.source-out.png
new file mode 100644
index 0000000000..eeedd0ff05
Binary files /dev/null and b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.uncovered.nocontext.source-out.png differ
diff --git a/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.uncovered.pattern.copy.html b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.uncovered.pattern.copy.html
new file mode 100644
index 0000000000..4d6a91de91
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.uncovered.pattern.copy.html
@@ -0,0 +1,34 @@
+
+
+Canvas test: 2d.composite.uncovered.pattern.copy
+
+
+
+
+
+
+
                                                                                                                                                                                                    2d.composite.uncovered.pattern.copy
                                                                                                                                                                                                    
+
                                                                                                                                                                                                    Pattern fill() draws pixels not covered by the source object as (0,0,0,0), and does not leave the pixels unchanged.
                                                                                                                                                                                                    
+
+
+
                                                                                                                                                                                                    Actual output:
                                                                                                                                                                                                    
+
                                                                                                                                                                                                    FAIL (fallback content)
                                                                                                                                                                                                    
+
                                                                                                                                                                                                    Expected output:
                                                                                                                                                                                                    
+
                                                                                                                                                                                                      
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.uncovered.pattern.copy.png b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.uncovered.pattern.copy.png
new file mode 100644
index 0000000000..eeedd0ff05
Binary files /dev/null and b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.uncovered.pattern.copy.png differ
diff --git a/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.uncovered.pattern.destination-atop.html b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.uncovered.pattern.destination-atop.html
new file mode 100644
index 0000000000..bf03da0791
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.uncovered.pattern.destination-atop.html
@@ -0,0 +1,34 @@
+
+
+Canvas test: 2d.composite.uncovered.pattern.destination-atop
+
+
+
+
+
+
+
                                                                                                                                                                                                      2d.composite.uncovered.pattern.destination-atop
                                                                                                                                                                                                      
+
                                                                                                                                                                                                      Pattern fill() draws pixels not covered by the source object as (0,0,0,0), and does not leave the pixels unchanged.
                                                                                                                                                                                                      
+
+
+
                                                                                                                                                                                                      Actual output:
                                                                                                                                                                                                      
+
                                                                                                                                                                                                      FAIL (fallback content)
                                                                                                                                                                                                      
+
                                                                                                                                                                                                      Expected output:
                                                                                                                                                                                                      
+
                                                                                                                                                                                                        
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.uncovered.pattern.destination-atop.png b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.uncovered.pattern.destination-atop.png
new file mode 100644
index 0000000000..eeedd0ff05
Binary files /dev/null and b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.uncovered.pattern.destination-atop.png differ
diff --git a/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.uncovered.pattern.destination-in.html b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.uncovered.pattern.destination-in.html
new file mode 100644
index 0000000000..f5a5fe3f9d
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.uncovered.pattern.destination-in.html
@@ -0,0 +1,34 @@
+
+
+Canvas test: 2d.composite.uncovered.pattern.destination-in
+
+
+
+
+
+
+
                                                                                                                                                                                                        2d.composite.uncovered.pattern.destination-in
                                                                                                                                                                                                        
+
                                                                                                                                                                                                        Pattern fill() draws pixels not covered by the source object as (0,0,0,0), and does not leave the pixels unchanged.
                                                                                                                                                                                                        
+
+
+
                                                                                                                                                                                                        Actual output:
                                                                                                                                                                                                        
+
                                                                                                                                                                                                        FAIL (fallback content)
                                                                                                                                                                                                        
+
                                                                                                                                                                                                        Expected output:
                                                                                                                                                                                                        
+
                                                                                                                                                                                                          
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.uncovered.pattern.destination-in.png b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.uncovered.pattern.destination-in.png
new file mode 100644
index 0000000000..eeedd0ff05
Binary files /dev/null and b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.uncovered.pattern.destination-in.png differ
diff --git a/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.uncovered.pattern.source-in.html b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.uncovered.pattern.source-in.html
new file mode 100644
index 0000000000..385334d4c6
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.uncovered.pattern.source-in.html
@@ -0,0 +1,34 @@
+
+
+Canvas test: 2d.composite.uncovered.pattern.source-in
+
+
+
+
+
+
+
                                                                                                                                                                                                          2d.composite.uncovered.pattern.source-in
                                                                                                                                                                                                          
+
                                                                                                                                                                                                          Pattern fill() draws pixels not covered by the source object as (0,0,0,0), and does not leave the pixels unchanged.
                                                                                                                                                                                                          
+
+
+
                                                                                                                                                                                                          Actual output:
                                                                                                                                                                                                          
+
                                                                                                                                                                                                          FAIL (fallback content)
                                                                                                                                                                                                          
+
                                                                                                                                                                                                          Expected output:
                                                                                                                                                                                                          
+
                                                                                                                                                                                                            
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.uncovered.pattern.source-in.png b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.uncovered.pattern.source-in.png
new file mode 100644
index 0000000000..eeedd0ff05
Binary files /dev/null and b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.uncovered.pattern.source-in.png differ
diff --git a/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.uncovered.pattern.source-out.html b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.uncovered.pattern.source-out.html
new file mode 100644
index 0000000000..ae0be111a9
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.uncovered.pattern.source-out.html
@@ -0,0 +1,34 @@
+
+
+Canvas test: 2d.composite.uncovered.pattern.source-out
+
+
+
+
+
+
+
                                                                                                                                                                                                            2d.composite.uncovered.pattern.source-out
                                                                                                                                                                                                            
+
                                                                                                                                                                                                            Pattern fill() draws pixels not covered by the source object as (0,0,0,0), and does not leave the pixels unchanged.
                                                                                                                                                                                                            
+
+
+
                                                                                                                                                                                                            Actual output:
                                                                                                                                                                                                            
+
                                                                                                                                                                                                            FAIL (fallback content)
                                                                                                                                                                                                            
+
                                                                                                                                                                                                            Expected output:
                                                                                                                                                                                                            
+
                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.uncovered.pattern.source-out.png b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.uncovered.pattern.source-out.png
new file mode 100644
index 0000000000..eeedd0ff05
Binary files /dev/null and b/testing/web-platform/tests/html/canvas/element/compositing/2d.composite.uncovered.pattern.source-out.png differ
diff --git a/testing/web-platform/tests/html/canvas/element/conformance-requirements/2d.conformance.requirements.basics.html b/testing/web-platform/tests/html/canvas/element/conformance-requirements/2d.conformance.requirements.basics.html
new file mode 100644
index 0000000000..cea531f9db
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/conformance-requirements/2d.conformance.requirements.basics.html
@@ -0,0 +1,61 @@
+
+
+Canvas test: 2d.conformance.requirements.basics
+
+
+
+
+
+
+
                                                                                                                                                                                                              2d.conformance.requirements.basics
                                                                                                                                                                                                              
+
                                                                                                                                                                                                              void methods return undefined
                                                                                                                                                                                                              
+
+
                                                                                                                                                                                                              Defined in "Web IDL" (draft)
+
                                                                                                                                                                                                              Actual output:
                                                                                                                                                                                                              
+
                                                                                                                                                                                                              FAIL (fallback content)
                                                                                                                                                                                                              
+
+
                                                                                                                                                                                                                
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/conformance-requirements/2d.conformance.requirements.delete.html b/testing/web-platform/tests/html/canvas/element/conformance-requirements/2d.conformance.requirements.delete.html
new file mode 100644
index 0000000000..a33cc869d6
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/conformance-requirements/2d.conformance.requirements.delete.html
@@ -0,0 +1,28 @@
+
+
+Canvas test: 2d.conformance.requirements.delete
+
+
+
+
+
+
+
                                                                                                                                                                                                                2d.conformance.requirements.delete
                                                                                                                                                                                                                
+
                                                                                                                                                                                                                window.CanvasRenderingContext2D is Configurable
                                                                                                                                                                                                                
+
+
                                                                                                                                                                                                                Defined in "Web IDL" (draft)
+
                                                                                                                                                                                                                Actual output:
                                                                                                                                                                                                                
+
                                                                                                                                                                                                                FAIL (fallback content)
                                                                                                                                                                                                                
+
+
                                                                                                                                                                                                                  
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/conformance-requirements/2d.conformance.requirements.drawings.html b/testing/web-platform/tests/html/canvas/element/conformance-requirements/2d.conformance.requirements.drawings.html
new file mode 100644
index 0000000000..efdad2eab9
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/conformance-requirements/2d.conformance.requirements.drawings.html
@@ -0,0 +1,27 @@
+
+
+Canvas test: 2d.conformance.requirements.drawings
+
+
+
+
+
+
+
                                                                                                                                                                                                                  2d.conformance.requirements.drawings
                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                  void methods return undefined
                                                                                                                                                                                                                  
+
+
+
                                                                                                                                                                                                                  Actual output:
                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                  FAIL (fallback content)
                                                                                                                                                                                                                  
+
+
                                                                                                                                                                                                                    
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/conformance-requirements/2d.conformance.requirements.missingargs.html b/testing/web-platform/tests/html/canvas/element/conformance-requirements/2d.conformance.requirements.missingargs.html
new file mode 100644
index 0000000000..6744c6c381
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/conformance-requirements/2d.conformance.requirements.missingargs.html
@@ -0,0 +1,140 @@
+
+
+Canvas test: 2d.conformance.requirements.missingargs
+
+
+
+
+
+
+
                                                                                                                                                                                                                    2d.conformance.requirements.missingargs
                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                    Missing arguments cause TypeError
                                                                                                                                                                                                                    
+
+
+
                                                                                                                                                                                                                    Actual output:
                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                    FAIL (fallback content)
                                                                                                                                                                                                                    
+
+
                                                                                                                                                                                                                      
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/drawing-images-to-the-canvas/2d.drawImage.3arg.html b/testing/web-platform/tests/html/canvas/element/drawing-images-to-the-canvas/2d.drawImage.3arg.html
new file mode 100644
index 0000000000..d9e2de563b
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/drawing-images-to-the-canvas/2d.drawImage.3arg.html
@@ -0,0 +1,44 @@
+
+
+Canvas test: 2d.drawImage.3arg
+
+
+
+
+
+
+
                                                                                                                                                                                                                      2d.drawImage.3arg
                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                      
+
+
+
                                                                                                                                                                                                                      Actual output:
                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                      FAIL (fallback content)
                                                                                                                                                                                                                      
+
+
                                                                                                                                                                                                                        
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/drawing-images-to-the-canvas/2d.drawImage.5arg.html b/testing/web-platform/tests/html/canvas/element/drawing-images-to-the-canvas/2d.drawImage.5arg.html
new file mode 100644
index 0000000000..befa7108f8
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/drawing-images-to-the-canvas/2d.drawImage.5arg.html
@@ -0,0 +1,45 @@
+
+
+Canvas test: 2d.drawImage.5arg
+
+
+
+
+
+
+
                                                                                                                                                                                                                        2d.drawImage.5arg
                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                        
+
+
+
                                                                                                                                                                                                                        Actual output:
                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                        FAIL (fallback content)
                                                                                                                                                                                                                        
+
+
                                                                                                                                                                                                                          
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/drawing-images-to-the-canvas/2d.drawImage.9arg.basic.html b/testing/web-platform/tests/html/canvas/element/drawing-images-to-the-canvas/2d.drawImage.9arg.basic.html
new file mode 100644
index 0000000000..f71eebc2e0
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/drawing-images-to-the-canvas/2d.drawImage.9arg.basic.html
@@ -0,0 +1,38 @@
+
+
+Canvas test: 2d.drawImage.9arg.basic
+
+
+
+
+
+
+
                                                                                                                                                                                                                          2d.drawImage.9arg.basic
                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                          
+
+
+
                                                                                                                                                                                                                          Actual output:
                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                          FAIL (fallback content)
                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                          Expected output:
                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                            
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/drawing-images-to-the-canvas/2d.drawImage.9arg.destpos.html b/testing/web-platform/tests/html/canvas/element/drawing-images-to-the-canvas/2d.drawImage.9arg.destpos.html
new file mode 100644
index 0000000000..98da8eccbd
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/drawing-images-to-the-canvas/2d.drawImage.9arg.destpos.html
@@ -0,0 +1,44 @@
+
+
+Canvas test: 2d.drawImage.9arg.destpos
+
+
+
+
+
+
+
                                                                                                                                                                                                                            2d.drawImage.9arg.destpos
                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                            
+
+
+
                                                                                                                                                                                                                            Actual output:
                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                            FAIL (fallback content)
                                                                                                                                                                                                                            
+
+
                                                                                                                                                                                                                              
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/drawing-images-to-the-canvas/2d.drawImage.9arg.destsize.html b/testing/web-platform/tests/html/canvas/element/drawing-images-to-the-canvas/2d.drawImage.9arg.destsize.html
new file mode 100644
index 0000000000..f21096cd96
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/drawing-images-to-the-canvas/2d.drawImage.9arg.destsize.html
@@ -0,0 +1,46 @@
+
+
+Canvas test: 2d.drawImage.9arg.destsize
+
+
+
+
+
+
+
                                                                                                                                                                                                                              2d.drawImage.9arg.destsize
                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                              
+
+
+
                                                                                                                                                                                                                              Actual output:
                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                              FAIL (fallback content)
                                                                                                                                                                                                                              
+
+
                                                                                                                                                                                                                                
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/drawing-images-to-the-canvas/2d.drawImage.9arg.sourcepos.html b/testing/web-platform/tests/html/canvas/element/drawing-images-to-the-canvas/2d.drawImage.9arg.sourcepos.html
new file mode 100644
index 0000000000..ca4cc18948
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/drawing-images-to-the-canvas/2d.drawImage.9arg.sourcepos.html
@@ -0,0 +1,37 @@
+
+
+Canvas test: 2d.drawImage.9arg.sourcepos
+
+
+
+
+
+
+
                                                                                                                                                                                                                                2d.drawImage.9arg.sourcepos
                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                
+
+
+
                                                                                                                                                                                                                                Actual output:
                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                FAIL (fallback content)
                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                Expected output:
                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                  
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/drawing-images-to-the-canvas/2d.drawImage.9arg.sourcesize.html b/testing/web-platform/tests/html/canvas/element/drawing-images-to-the-canvas/2d.drawImage.9arg.sourcesize.html
new file mode 100644
index 0000000000..fb38943cfa
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/drawing-images-to-the-canvas/2d.drawImage.9arg.sourcesize.html
@@ -0,0 +1,44 @@
+
+
+Canvas test: 2d.drawImage.9arg.sourcesize
+
+
+
+
+
+
+
                                                                                                                                                                                                                                  2d.drawImage.9arg.sourcesize
                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                  
+
+
+
                                                                                                                                                                                                                                  Actual output:
                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                  FAIL (fallback content)
                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                  Expected output:
                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                    
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/drawing-images-to-the-canvas/2d.drawImage.alpha.html b/testing/web-platform/tests/html/canvas/element/drawing-images-to-the-canvas/2d.drawImage.alpha.html
new file mode 100644
index 0000000000..52acd11803
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/drawing-images-to-the-canvas/2d.drawImage.alpha.html
@@ -0,0 +1,36 @@
+
+
+Canvas test: 2d.drawImage.alpha
+
+
+
+
+
+
+
                                                                                                                                                                                                                                    2d.drawImage.alpha
                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                    
+
+
+
                                                                                                                                                                                                                                    Actual output:
                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                    FAIL (fallback content)
                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                    Expected output:
                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                      
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/drawing-images-to-the-canvas/2d.drawImage.animated.apng.html b/testing/web-platform/tests/html/canvas/element/drawing-images-to-the-canvas/2d.drawImage.animated.apng.html
new file mode 100644
index 0000000000..ffe19ce9bc
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/drawing-images-to-the-canvas/2d.drawImage.animated.apng.html
@@ -0,0 +1,31 @@
+
+
+Canvas test: 2d.drawImage.animated.apng
+
+
+
+
+
+
+
                                                                                                                                                                                                                                      2d.drawImage.animated.apng
                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                      drawImage() of an APNG with no poster frame draws the first frame
                                                                                                                                                                                                                                      
+
+
+
                                                                                                                                                                                                                                      Actual output:
                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                      FAIL (fallback content)
                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                      Expected output:
                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                        
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/drawing-images-to-the-canvas/2d.drawImage.animated.gif.html b/testing/web-platform/tests/html/canvas/element/drawing-images-to-the-canvas/2d.drawImage.animated.gif.html
new file mode 100644
index 0000000000..6330d06ade
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/drawing-images-to-the-canvas/2d.drawImage.animated.gif.html
@@ -0,0 +1,31 @@
+
+
+Canvas test: 2d.drawImage.animated.gif
+
+
+
+
+
+
+
                                                                                                                                                                                                                                        2d.drawImage.animated.gif
                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                        drawImage() of an animated GIF draws the first frame
                                                                                                                                                                                                                                        
+
+
+
                                                                                                                                                                                                                                        Actual output:
                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                        FAIL (fallback content)
                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                        Expected output:
                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                          
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/drawing-images-to-the-canvas/2d.drawImage.animated.poster.html b/testing/web-platform/tests/html/canvas/element/drawing-images-to-the-canvas/2d.drawImage.animated.poster.html
new file mode 100644
index 0000000000..2d28bc1283
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/drawing-images-to-the-canvas/2d.drawImage.animated.poster.html
@@ -0,0 +1,33 @@
+
+
+Canvas test: 2d.drawImage.animated.poster
+
+
+
+
+
+
+
                                                                                                                                                                                                                                          2d.drawImage.animated.poster
                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                          drawImage() of an APNG draws the poster frame
                                                                                                                                                                                                                                          
+
+
+
                                                                                                                                                                                                                                          Actual output:
                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                          FAIL (fallback content)
                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                          Expected output:
                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                            
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/drawing-images-to-the-canvas/2d.drawImage.broken.html b/testing/web-platform/tests/html/canvas/element/drawing-images-to-the-canvas/2d.drawImage.broken.html
new file mode 100644
index 0000000000..f6516a8ecc
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/drawing-images-to-the-canvas/2d.drawImage.broken.html
@@ -0,0 +1,31 @@
+
+
+Canvas test: 2d.drawImage.broken
+
+
+
+
+
+
+
                                                                                                                                                                                                                                            2d.drawImage.broken
                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                            
+
+
+
                                                                                                                                                                                                                                            Actual output:
                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                            FAIL (fallback content)
                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                            Expected output:
                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                              
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/drawing-images-to-the-canvas/2d.drawImage.canvas.html b/testing/web-platform/tests/html/canvas/element/drawing-images-to-the-canvas/2d.drawImage.canvas.html
new file mode 100644
index 0000000000..d1f9aeb326
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/drawing-images-to-the-canvas/2d.drawImage.canvas.html
@@ -0,0 +1,46 @@
+
+
+Canvas test: 2d.drawImage.canvas
+
+
+
+
+
+
+
                                                                                                                                                                                                                                              2d.drawImage.canvas
                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                              
+
+
+
                                                                                                                                                                                                                                              Actual output:
                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                              FAIL (fallback content)
                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                              Expected output:
                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/drawing-images-to-the-canvas/2d.drawImage.clip.html b/testing/web-platform/tests/html/canvas/element/drawing-images-to-the-canvas/2d.drawImage.clip.html
new file mode 100644
index 0000000000..70ec029d8e
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/drawing-images-to-the-canvas/2d.drawImage.clip.html
@@ -0,0 +1,41 @@
+
+
+Canvas test: 2d.drawImage.clip
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                2d.drawImage.clip
                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                
+
+
+
                                                                                                                                                                                                                                                Actual output:
                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                FAIL (fallback content)
                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                Expected output:
                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                  
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/drawing-images-to-the-canvas/2d.drawImage.composite.html b/testing/web-platform/tests/html/canvas/element/drawing-images-to-the-canvas/2d.drawImage.composite.html
new file mode 100644
index 0000000000..4ff2026aad
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/drawing-images-to-the-canvas/2d.drawImage.composite.html
@@ -0,0 +1,36 @@
+
+
+Canvas test: 2d.drawImage.composite
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                  2d.drawImage.composite
                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                  
+
+
+
                                                                                                                                                                                                                                                  Actual output:
                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                  FAIL (fallback content)
                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                  Expected output:
                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                    
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/drawing-images-to-the-canvas/2d.drawImage.floatsource.html b/testing/web-platform/tests/html/canvas/element/drawing-images-to-the-canvas/2d.drawImage.floatsource.html
new file mode 100644
index 0000000000..3e100c257f
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/drawing-images-to-the-canvas/2d.drawImage.floatsource.html
@@ -0,0 +1,32 @@
+
+
+Canvas test: 2d.drawImage.floatsource
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                    2d.drawImage.floatsource
                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                    
+
+
+
                                                                                                                                                                                                                                                    Actual output:
                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                    FAIL (fallback content)
                                                                                                                                                                                                                                                    
+
+
                                                                                                                                                                                                                                                      
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/drawing-images-to-the-canvas/2d.drawImage.incomplete.emptysrc.html b/testing/web-platform/tests/html/canvas/element/drawing-images-to-the-canvas/2d.drawImage.incomplete.emptysrc.html
new file mode 100644
index 0000000000..849f41aaf6
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/drawing-images-to-the-canvas/2d.drawImage.incomplete.emptysrc.html
@@ -0,0 +1,32 @@
+
+
+Canvas test: 2d.drawImage.incomplete.emptysrc
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                      2d.drawImage.incomplete.emptysrc
                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                      
+
+
+
                                                                                                                                                                                                                                                      Actual output:
                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                      FAIL (fallback content)
                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                      Expected output:
                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                        
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/drawing-images-to-the-canvas/2d.drawImage.incomplete.immediate.html b/testing/web-platform/tests/html/canvas/element/drawing-images-to-the-canvas/2d.drawImage.incomplete.immediate.html
new file mode 100644
index 0000000000..d2e8108d90
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/drawing-images-to-the-canvas/2d.drawImage.incomplete.immediate.html
@@ -0,0 +1,36 @@
+
+
+Canvas test: 2d.drawImage.incomplete.immediate
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                        2d.drawImage.incomplete.immediate
                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                        
+
+
+
                                                                                                                                                                                                                                                        Actual output:
                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                        FAIL (fallback content)
                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                        Expected output:
                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                          
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/drawing-images-to-the-canvas/2d.drawImage.incomplete.nosrc.html b/testing/web-platform/tests/html/canvas/element/drawing-images-to-the-canvas/2d.drawImage.incomplete.nosrc.html
new file mode 100644
index 0000000000..dccf75c6d8
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/drawing-images-to-the-canvas/2d.drawImage.incomplete.nosrc.html
@@ -0,0 +1,30 @@
+
+
+Canvas test: 2d.drawImage.incomplete.nosrc
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                          2d.drawImage.incomplete.nosrc
                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                          
+
+
+
                                                                                                                                                                                                                                                          Actual output:
                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                          FAIL (fallback content)
                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                          Expected output:
                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                            
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/drawing-images-to-the-canvas/2d.drawImage.incomplete.reload.html b/testing/web-platform/tests/html/canvas/element/drawing-images-to-the-canvas/2d.drawImage.incomplete.reload.html
new file mode 100644
index 0000000000..b4a8440e46
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/drawing-images-to-the-canvas/2d.drawImage.incomplete.reload.html
@@ -0,0 +1,38 @@
+
+
+Canvas test: 2d.drawImage.incomplete.reload
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                            2d.drawImage.incomplete.reload
                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                            
+
+
+
                                                                                                                                                                                                                                                            Actual output:
                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                            FAIL (fallback content)
                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                            Expected output:
                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                              
+
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/drawing-images-to-the-canvas/2d.drawImage.incomplete.removedsrc.html b/testing/web-platform/tests/html/canvas/element/drawing-images-to-the-canvas/2d.drawImage.incomplete.removedsrc.html
new file mode 100644
index 0000000000..91e11eb15c
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/drawing-images-to-the-canvas/2d.drawImage.incomplete.removedsrc.html
@@ -0,0 +1,32 @@
+
+
+Canvas test: 2d.drawImage.incomplete.removedsrc
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                              2d.drawImage.incomplete.removedsrc
                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                              
+
+
+
                                                                                                                                                                                                                                                              Actual output:
                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                              FAIL (fallback content)
                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                              Expected output:
                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/drawing-images-to-the-canvas/2d.drawImage.negativedest.html b/testing/web-platform/tests/html/canvas/element/drawing-images-to-the-canvas/2d.drawImage.negativedest.html
new file mode 100644
index 0000000000..94d4f71a7e
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/drawing-images-to-the-canvas/2d.drawImage.negativedest.html
@@ -0,0 +1,44 @@
+
+
+Canvas test: 2d.drawImage.negativedest
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                2d.drawImage.negativedest
                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                Negative destination width/height represents the correct rectangle
                                                                                                                                                                                                                                                                
+
+
+
                                                                                                                                                                                                                                                                Actual output:
                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                FAIL (fallback content)
                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                Expected output:
                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                  
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/drawing-images-to-the-canvas/2d.drawImage.negativedir.html b/testing/web-platform/tests/html/canvas/element/drawing-images-to-the-canvas/2d.drawImage.negativedir.html
new file mode 100644
index 0000000000..281da9a573
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/drawing-images-to-the-canvas/2d.drawImage.negativedir.html
@@ -0,0 +1,44 @@
+
+
+Canvas test: 2d.drawImage.negativedir
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                  2d.drawImage.negativedir
                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                  Negative dimensions do not affect the direction of the image
                                                                                                                                                                                                                                                                  
+
+
+
                                                                                                                                                                                                                                                                  Actual output:
                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                  FAIL (fallback content)
                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                  Expected output:
                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                    
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/drawing-images-to-the-canvas/2d.drawImage.negativesource.html b/testing/web-platform/tests/html/canvas/element/drawing-images-to-the-canvas/2d.drawImage.negativesource.html
new file mode 100644
index 0000000000..5a504973d1
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/drawing-images-to-the-canvas/2d.drawImage.negativesource.html
@@ -0,0 +1,44 @@
+
+
+Canvas test: 2d.drawImage.negativesource
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                    2d.drawImage.negativesource
                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                    Negative source width/height represents the correct rectangle
                                                                                                                                                                                                                                                                    
+
+
+
                                                                                                                                                                                                                                                                    Actual output:
                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                    FAIL (fallback content)
                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                    Expected output:
                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                      
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/drawing-images-to-the-canvas/2d.drawImage.nonexistent.html b/testing/web-platform/tests/html/canvas/element/drawing-images-to-the-canvas/2d.drawImage.nonexistent.html
new file mode 100644
index 0000000000..0cebf6cf68
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/drawing-images-to-the-canvas/2d.drawImage.nonexistent.html
@@ -0,0 +1,28 @@
+
+
+Canvas test: 2d.drawImage.nonexistent
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                      2d.drawImage.nonexistent
                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                      
+
+
+
                                                                                                                                                                                                                                                                      Actual output:
                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                      FAIL (fallback content)
                                                                                                                                                                                                                                                                      
+
+
                                                                                                                                                                                                                                                                        
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/drawing-images-to-the-canvas/2d.drawImage.nonfinite.html b/testing/web-platform/tests/html/canvas/element/drawing-images-to-the-canvas/2d.drawImage.nonfinite.html
new file mode 100644
index 0000000000..8225d15fdd
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/drawing-images-to-the-canvas/2d.drawImage.nonfinite.html
@@ -0,0 +1,335 @@
+
+
+Canvas test: 2d.drawImage.nonfinite
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                        2d.drawImage.nonfinite
                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                        drawImage() with Infinity/NaN is ignored
                                                                                                                                                                                                                                                                        
+
+
+
                                                                                                                                                                                                                                                                        Actual output:
                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                        FAIL (fallback content)
                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                        Expected output:
                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                          
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/drawing-images-to-the-canvas/2d.drawImage.nowrap.html b/testing/web-platform/tests/html/canvas/element/drawing-images-to-the-canvas/2d.drawImage.nowrap.html
new file mode 100644
index 0000000000..8c32461b3a
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/drawing-images-to-the-canvas/2d.drawImage.nowrap.html
@@ -0,0 +1,37 @@
+
+
+Canvas test: 2d.drawImage.nowrap
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                          2d.drawImage.nowrap
                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                          Stretched images do not get pixels wrapping around the edges
                                                                                                                                                                                                                                                                          
+
+
+
                                                                                                                                                                                                                                                                          Actual output:
                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                          FAIL (fallback content)
                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                          Expected output:
                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                            
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/drawing-images-to-the-canvas/2d.drawImage.null.html b/testing/web-platform/tests/html/canvas/element/drawing-images-to-the-canvas/2d.drawImage.null.html
new file mode 100644
index 0000000000..0f46c97dce
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/drawing-images-to-the-canvas/2d.drawImage.null.html
@@ -0,0 +1,26 @@
+
+
+Canvas test: 2d.drawImage.null
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                            2d.drawImage.null
                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                            
+
+
+
                                                                                                                                                                                                                                                                            Actual output:
                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                            FAIL (fallback content)
                                                                                                                                                                                                                                                                            
+
+
                                                                                                                                                                                                                                                                              
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/drawing-images-to-the-canvas/2d.drawImage.path.html b/testing/web-platform/tests/html/canvas/element/drawing-images-to-the-canvas/2d.drawImage.path.html
new file mode 100644
index 0000000000..52852ec32e
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/drawing-images-to-the-canvas/2d.drawImage.path.html
@@ -0,0 +1,36 @@
+
+
+Canvas test: 2d.drawImage.path
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                              2d.drawImage.path
                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                              
+
+
+
                                                                                                                                                                                                                                                                              Actual output:
                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                              FAIL (fallback content)
                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                              Expected output:
                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/drawing-images-to-the-canvas/2d.drawImage.self.1.html b/testing/web-platform/tests/html/canvas/element/drawing-images-to-the-canvas/2d.drawImage.self.1.html
new file mode 100644
index 0000000000..90eaaea5d9
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/drawing-images-to-the-canvas/2d.drawImage.self.1.html
@@ -0,0 +1,35 @@
+
+
+Canvas test: 2d.drawImage.self.1
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                2d.drawImage.self.1
                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                
+
+
+
                                                                                                                                                                                                                                                                                Actual output:
                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                FAIL (fallback content)
                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                Expected output:
                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                  
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/drawing-images-to-the-canvas/2d.drawImage.self.2.html b/testing/web-platform/tests/html/canvas/element/drawing-images-to-the-canvas/2d.drawImage.self.2.html
new file mode 100644
index 0000000000..39e619ddc5
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/drawing-images-to-the-canvas/2d.drawImage.self.2.html
@@ -0,0 +1,37 @@
+
+
+Canvas test: 2d.drawImage.self.2
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                  2d.drawImage.self.2
                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                  
+
+
+
                                                                                                                                                                                                                                                                                  Actual output:
                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                  FAIL (fallback content)
                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                  Expected output:
                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                    
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/drawing-images-to-the-canvas/2d.drawImage.svg.html b/testing/web-platform/tests/html/canvas/element/drawing-images-to-the-canvas/2d.drawImage.svg.html
new file mode 100644
index 0000000000..bcfcdadb28
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/drawing-images-to-the-canvas/2d.drawImage.svg.html
@@ -0,0 +1,37 @@
+
+
+Canvas test: 2d.drawImage.svg
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                    2d.drawImage.svg
                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                    drawImage() of an SVG image
                                                                                                                                                                                                                                                                                    
+
+
+
                                                                                                                                                                                                                                                                                    Actual output:
                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                    FAIL (fallback content)
                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                    Expected output:
                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                      
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/drawing-images-to-the-canvas/2d.drawImage.transform.html b/testing/web-platform/tests/html/canvas/element/drawing-images-to-the-canvas/2d.drawImage.transform.html
new file mode 100644
index 0000000000..42a277e200
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/drawing-images-to-the-canvas/2d.drawImage.transform.html
@@ -0,0 +1,36 @@
+
+
+Canvas test: 2d.drawImage.transform
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                      2d.drawImage.transform
                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                      
+
+
+
                                                                                                                                                                                                                                                                                      Actual output:
                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                      FAIL (fallback content)
                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                      Expected output:
                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                        
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/drawing-images-to-the-canvas/2d.drawImage.wrongtype.html b/testing/web-platform/tests/html/canvas/element/drawing-images-to-the-canvas/2d.drawImage.wrongtype.html
new file mode 100644
index 0000000000..73e8f45090
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/drawing-images-to-the-canvas/2d.drawImage.wrongtype.html
@@ -0,0 +1,28 @@
+
+
+Canvas test: 2d.drawImage.wrongtype
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                        2d.drawImage.wrongtype
                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                        Incorrect image types in drawImage do not match any defined overloads, so WebIDL throws a TypeError
                                                                                                                                                                                                                                                                                        
+
+
+
                                                                                                                                                                                                                                                                                        Actual output:
                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                        FAIL (fallback content)
                                                                                                                                                                                                                                                                                        
+
+
                                                                                                                                                                                                                                                                                          
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/drawing-images-to-the-canvas/2d.drawImage.wrongtype.paragraph.html b/testing/web-platform/tests/html/canvas/element/drawing-images-to-the-canvas/2d.drawImage.wrongtype.paragraph.html
new file mode 100644
index 0000000000..ef0be39ca7
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/drawing-images-to-the-canvas/2d.drawImage.wrongtype.paragraph.html
@@ -0,0 +1,26 @@
+
+
+Canvas test: 2d.drawImage.wrongtype.paragraph
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                          2d.drawImage.wrongtype.paragraph
                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                          Incorrect image types in drawImage do not match any defined overloads, so WebIDL throws a TypeError
                                                                                                                                                                                                                                                                                          
+
+
                                                                                                                                                                                                                                                                                          Defined in "Web IDL" (draft)
+
                                                                                                                                                                                                                                                                                          Actual output:
                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                          FAIL (fallback content)
                                                                                                                                                                                                                                                                                          
+
+
                                                                                                                                                                                                                                                                                            
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/drawing-images-to-the-canvas/2d.drawImage.zerocanvas.html b/testing/web-platform/tests/html/canvas/element/drawing-images-to-the-canvas/2d.drawImage.zerocanvas.html
new file mode 100644
index 0000000000..d3c644cf88
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/drawing-images-to-the-canvas/2d.drawImage.zerocanvas.html
@@ -0,0 +1,37 @@
+
+
+Canvas test: 2d.drawImage.zerocanvas
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                            2d.drawImage.zerocanvas
                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                            drawImage with zero-sized canvas as the source shoud throw exception
                                                                                                                                                                                                                                                                                            
+
+
+
                                                                                                                                                                                                                                                                                            Actual output:
                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                            FAIL (fallback content)
                                                                                                                                                                                                                                                                                            
+
+
                                                                                                                                                                                                                                                                                              
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/drawing-images-to-the-canvas/2d.drawImage.zerosource.html b/testing/web-platform/tests/html/canvas/element/drawing-images-to-the-canvas/2d.drawImage.zerosource.html
new file mode 100644
index 0000000000..2b7b4ebea6
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/drawing-images-to-the-canvas/2d.drawImage.zerosource.html
@@ -0,0 +1,36 @@
+
+
+Canvas test: 2d.drawImage.zerosource
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                              2d.drawImage.zerosource
                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                              drawImage with zero-sized source rectangle draws nothing without exception
                                                                                                                                                                                                                                                                                              
+
+
+
                                                                                                                                                                                                                                                                                              Actual output:
                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                              FAIL (fallback content)
                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                              Expected output:
                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/drawing-images-to-the-canvas/2d.drawImage.zerosource.image.html b/testing/web-platform/tests/html/canvas/element/drawing-images-to-the-canvas/2d.drawImage.zerosource.image.html
new file mode 100644
index 0000000000..ea00f1f9a1
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/drawing-images-to-the-canvas/2d.drawImage.zerosource.image.html
@@ -0,0 +1,46 @@
+
+
+Canvas test: 2d.drawImage.zerosource.image
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                2d.drawImage.zerosource.image
                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                drawImage with zero-sized source rectangle from image draws nothing without exception
                                                                                                                                                                                                                                                                                                
+
+
+
                                                                                                                                                                                                                                                                                                Actual output:
                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                FAIL (fallback content)
                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                Expected output:
                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                  
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/drawing-rectangles-to-the-canvas/2d.clearRect.basic.html b/testing/web-platform/tests/html/canvas/element/drawing-rectangles-to-the-canvas/2d.clearRect.basic.html
new file mode 100644
index 0000000000..78a8c3ac06
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/drawing-rectangles-to-the-canvas/2d.clearRect.basic.html
@@ -0,0 +1,29 @@
+
+
+Canvas test: 2d.clearRect.basic
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                  2d.clearRect.basic
                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                  clearRect clears to transparent black
                                                                                                                                                                                                                                                                                                  
+
+
+
                                                                                                                                                                                                                                                                                                  Actual output:
                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                  FAIL (fallback content)
                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                  Expected output:
                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                    
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/drawing-rectangles-to-the-canvas/2d.clearRect.clip.html b/testing/web-platform/tests/html/canvas/element/drawing-rectangles-to-the-canvas/2d.clearRect.clip.html
new file mode 100644
index 0000000000..eb43a401e7
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/drawing-rectangles-to-the-canvas/2d.clearRect.clip.html
@@ -0,0 +1,34 @@
+
+
+Canvas test: 2d.clearRect.clip
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                    2d.clearRect.clip
                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                    clearRect is affected by clipping regions
                                                                                                                                                                                                                                                                                                    
+
+
+
                                                                                                                                                                                                                                                                                                    Actual output:
                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                    FAIL (fallback content)
                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                    Expected output:
                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                      
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/drawing-rectangles-to-the-canvas/2d.clearRect.globalalpha.html b/testing/web-platform/tests/html/canvas/element/drawing-rectangles-to-the-canvas/2d.clearRect.globalalpha.html
new file mode 100644
index 0000000000..73b87ecc81
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/drawing-rectangles-to-the-canvas/2d.clearRect.globalalpha.html
@@ -0,0 +1,30 @@
+
+
+Canvas test: 2d.clearRect.globalalpha
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                      2d.clearRect.globalalpha
                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                      clearRect is not affected by globalAlpha
                                                                                                                                                                                                                                                                                                      
+
+
+
                                                                                                                                                                                                                                                                                                      Actual output:
                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                      FAIL (fallback content)
                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                      Expected output:
                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                        
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/drawing-rectangles-to-the-canvas/2d.clearRect.globalcomposite.html b/testing/web-platform/tests/html/canvas/element/drawing-rectangles-to-the-canvas/2d.clearRect.globalcomposite.html
new file mode 100644
index 0000000000..9eb3d33834
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/drawing-rectangles-to-the-canvas/2d.clearRect.globalcomposite.html
@@ -0,0 +1,30 @@
+
+
+Canvas test: 2d.clearRect.globalcomposite
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                        2d.clearRect.globalcomposite
                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                        clearRect is not affected by globalCompositeOperation
                                                                                                                                                                                                                                                                                                        
+
+
+
                                                                                                                                                                                                                                                                                                        Actual output:
                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                        FAIL (fallback content)
                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                        Expected output:
                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                          
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/drawing-rectangles-to-the-canvas/2d.clearRect.negative.html b/testing/web-platform/tests/html/canvas/element/drawing-rectangles-to-the-canvas/2d.clearRect.negative.html
new file mode 100644
index 0000000000..baa48e2ba3
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/drawing-rectangles-to-the-canvas/2d.clearRect.negative.html
@@ -0,0 +1,35 @@
+
+
+Canvas test: 2d.clearRect.negative
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                          2d.clearRect.negative
                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                          clearRect of negative sizes works
                                                                                                                                                                                                                                                                                                          
+
+
+
                                                                                                                                                                                                                                                                                                          Actual output:
                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                          FAIL (fallback content)
                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                          Expected output:
                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                            
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/drawing-rectangles-to-the-canvas/2d.clearRect.nonfinite.html b/testing/web-platform/tests/html/canvas/element/drawing-rectangles-to-the-canvas/2d.clearRect.nonfinite.html
new file mode 100644
index 0000000000..726ed05772
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/drawing-rectangles-to-the-canvas/2d.clearRect.nonfinite.html
@@ -0,0 +1,51 @@
+
+
+Canvas test: 2d.clearRect.nonfinite
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                            2d.clearRect.nonfinite
                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                            clearRect() with Infinity/NaN is ignored
                                                                                                                                                                                                                                                                                                            
+
+
+
                                                                                                                                                                                                                                                                                                            Actual output:
                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                            FAIL (fallback content)
                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                            Expected output:
                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                              
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/drawing-rectangles-to-the-canvas/2d.clearRect.path.html b/testing/web-platform/tests/html/canvas/element/drawing-rectangles-to-the-canvas/2d.clearRect.path.html
new file mode 100644
index 0000000000..77c9c037b7
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/drawing-rectangles-to-the-canvas/2d.clearRect.path.html
@@ -0,0 +1,31 @@
+
+
+Canvas test: 2d.clearRect.path
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                              2d.clearRect.path
                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                              clearRect does not affect the current path
                                                                                                                                                                                                                                                                                                              
+
+
+
                                                                                                                                                                                                                                                                                                              Actual output:
                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                              FAIL (fallback content)
                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                              Expected output:
                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/drawing-rectangles-to-the-canvas/2d.clearRect.shadow.html b/testing/web-platform/tests/html/canvas/element/drawing-rectangles-to-the-canvas/2d.clearRect.shadow.html
new file mode 100644
index 0000000000..8240073a28
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/drawing-rectangles-to-the-canvas/2d.clearRect.shadow.html
@@ -0,0 +1,33 @@
+
+
+Canvas test: 2d.clearRect.shadow
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                2d.clearRect.shadow
                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                clearRect does not draw shadows
                                                                                                                                                                                                                                                                                                                
+
+
+
                                                                                                                                                                                                                                                                                                                Actual output:
                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                Expected output:
                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                  
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/drawing-rectangles-to-the-canvas/2d.clearRect.transform.html b/testing/web-platform/tests/html/canvas/element/drawing-rectangles-to-the-canvas/2d.clearRect.transform.html
new file mode 100644
index 0000000000..347bedb835
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/drawing-rectangles-to-the-canvas/2d.clearRect.transform.html
@@ -0,0 +1,31 @@
+
+
+Canvas test: 2d.clearRect.transform
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                  2d.clearRect.transform
                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                  clearRect is affected by transforms
                                                                                                                                                                                                                                                                                                                  
+
+
+
                                                                                                                                                                                                                                                                                                                  Actual output:
                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                  FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                  Expected output:
                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                    
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/drawing-rectangles-to-the-canvas/2d.clearRect.zero.html b/testing/web-platform/tests/html/canvas/element/drawing-rectangles-to-the-canvas/2d.clearRect.zero.html
new file mode 100644
index 0000000000..2c192a7102
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/drawing-rectangles-to-the-canvas/2d.clearRect.zero.html
@@ -0,0 +1,31 @@
+
+
+Canvas test: 2d.clearRect.zero
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                    2d.clearRect.zero
                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                    clearRect of zero pixels has no effect
                                                                                                                                                                                                                                                                                                                    
+
+
+
                                                                                                                                                                                                                                                                                                                    Actual output:
                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                    FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                    Expected output:
                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                      
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/drawing-rectangles-to-the-canvas/2d.fillRect.basic.html b/testing/web-platform/tests/html/canvas/element/drawing-rectangles-to-the-canvas/2d.fillRect.basic.html
new file mode 100644
index 0000000000..f29daf426a
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/drawing-rectangles-to-the-canvas/2d.fillRect.basic.html
@@ -0,0 +1,28 @@
+
+
+Canvas test: 2d.fillRect.basic
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                      2d.fillRect.basic
                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                      fillRect works
                                                                                                                                                                                                                                                                                                                      
+
+
+
                                                                                                                                                                                                                                                                                                                      Actual output:
                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                      FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                      Expected output:
                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                        
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/drawing-rectangles-to-the-canvas/2d.fillRect.clip.html b/testing/web-platform/tests/html/canvas/element/drawing-rectangles-to-the-canvas/2d.fillRect.clip.html
new file mode 100644
index 0000000000..cc46b765d4
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/drawing-rectangles-to-the-canvas/2d.fillRect.clip.html
@@ -0,0 +1,35 @@
+
+
+Canvas test: 2d.fillRect.clip
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                        2d.fillRect.clip
                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                        fillRect is affected by clipping regions
                                                                                                                                                                                                                                                                                                                        
+
+
+
                                                                                                                                                                                                                                                                                                                        Actual output:
                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                        FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                        Expected output:
                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                          
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/drawing-rectangles-to-the-canvas/2d.fillRect.negative.html b/testing/web-platform/tests/html/canvas/element/drawing-rectangles-to-the-canvas/2d.fillRect.negative.html
new file mode 100644
index 0000000000..7c64952e8b
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/drawing-rectangles-to-the-canvas/2d.fillRect.negative.html
@@ -0,0 +1,36 @@
+
+
+Canvas test: 2d.fillRect.negative
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                          2d.fillRect.negative
                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                          fillRect of negative sizes works
                                                                                                                                                                                                                                                                                                                          
+
+
+
                                                                                                                                                                                                                                                                                                                          Actual output:
                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                          FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                          Expected output:
                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                            
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/drawing-rectangles-to-the-canvas/2d.fillRect.nonfinite.html b/testing/web-platform/tests/html/canvas/element/drawing-rectangles-to-the-canvas/2d.fillRect.nonfinite.html
new file mode 100644
index 0000000000..090607766d
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/drawing-rectangles-to-the-canvas/2d.fillRect.nonfinite.html
@@ -0,0 +1,52 @@
+
+
+Canvas test: 2d.fillRect.nonfinite
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                            2d.fillRect.nonfinite
                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                            fillRect() with Infinity/NaN is ignored
                                                                                                                                                                                                                                                                                                                            
+
+
+
                                                                                                                                                                                                                                                                                                                            Actual output:
                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                            FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                            Expected output:
                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                              
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/drawing-rectangles-to-the-canvas/2d.fillRect.path.html b/testing/web-platform/tests/html/canvas/element/drawing-rectangles-to-the-canvas/2d.fillRect.path.html
new file mode 100644
index 0000000000..39a6e18103
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/drawing-rectangles-to-the-canvas/2d.fillRect.path.html
@@ -0,0 +1,32 @@
+
+
+Canvas test: 2d.fillRect.path
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                              2d.fillRect.path
                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                              fillRect does not affect the current path
                                                                                                                                                                                                                                                                                                                              
+
+
+
                                                                                                                                                                                                                                                                                                                              Actual output:
                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                              FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                              Expected output:
                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/drawing-rectangles-to-the-canvas/2d.fillRect.shadow.html b/testing/web-platform/tests/html/canvas/element/drawing-rectangles-to-the-canvas/2d.fillRect.shadow.html
new file mode 100644
index 0000000000..48aa8538f1
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/drawing-rectangles-to-the-canvas/2d.fillRect.shadow.html
@@ -0,0 +1,33 @@
+
+
+Canvas test: 2d.fillRect.shadow
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                2d.fillRect.shadow
                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                fillRect draws shadows
                                                                                                                                                                                                                                                                                                                                
+
+
+
                                                                                                                                                                                                                                                                                                                                Actual output:
                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                Expected output:
                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                  
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/drawing-rectangles-to-the-canvas/2d.fillRect.transform.html b/testing/web-platform/tests/html/canvas/element/drawing-rectangles-to-the-canvas/2d.fillRect.transform.html
new file mode 100644
index 0000000000..de6f790bc7
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/drawing-rectangles-to-the-canvas/2d.fillRect.transform.html
@@ -0,0 +1,30 @@
+
+
+Canvas test: 2d.fillRect.transform
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                  2d.fillRect.transform
                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                  fillRect is affected by transforms
                                                                                                                                                                                                                                                                                                                                  
+
+
+
                                                                                                                                                                                                                                                                                                                                  Actual output:
                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                  FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                  Expected output:
                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                    
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/drawing-rectangles-to-the-canvas/2d.fillRect.zero.html b/testing/web-platform/tests/html/canvas/element/drawing-rectangles-to-the-canvas/2d.fillRect.zero.html
new file mode 100644
index 0000000000..095eb19a66
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/drawing-rectangles-to-the-canvas/2d.fillRect.zero.html
@@ -0,0 +1,32 @@
+
+
+Canvas test: 2d.fillRect.zero
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                    2d.fillRect.zero
                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                    fillRect of zero pixels has no effect
                                                                                                                                                                                                                                                                                                                                    
+
+
+
                                                                                                                                                                                                                                                                                                                                    Actual output:
                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                    FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                    Expected output:
                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                      
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/drawing-rectangles-to-the-canvas/2d.strokeRect.basic.html b/testing/web-platform/tests/html/canvas/element/drawing-rectangles-to-the-canvas/2d.strokeRect.basic.html
new file mode 100644
index 0000000000..d2ea813178
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/drawing-rectangles-to-the-canvas/2d.strokeRect.basic.html
@@ -0,0 +1,29 @@
+
+
+Canvas test: 2d.strokeRect.basic
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                      2d.strokeRect.basic
                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                      strokeRect works
                                                                                                                                                                                                                                                                                                                                      
+
+
+
                                                                                                                                                                                                                                                                                                                                      Actual output:
                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                      FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                      Expected output:
                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                        
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/drawing-rectangles-to-the-canvas/2d.strokeRect.clip.html b/testing/web-platform/tests/html/canvas/element/drawing-rectangles-to-the-canvas/2d.strokeRect.clip.html
new file mode 100644
index 0000000000..31db69b6cd
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/drawing-rectangles-to-the-canvas/2d.strokeRect.clip.html
@@ -0,0 +1,36 @@
+
+
+Canvas test: 2d.strokeRect.clip
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                        2d.strokeRect.clip
                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                        strokeRect is affected by clipping regions
                                                                                                                                                                                                                                                                                                                                        
+
+
+
                                                                                                                                                                                                                                                                                                                                        Actual output:
                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                        FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                        Expected output:
                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                          
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/drawing-rectangles-to-the-canvas/2d.strokeRect.globalalpha.html b/testing/web-platform/tests/html/canvas/element/drawing-rectangles-to-the-canvas/2d.strokeRect.globalalpha.html
new file mode 100644
index 0000000000..323b663145
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/drawing-rectangles-to-the-canvas/2d.strokeRect.globalalpha.html
@@ -0,0 +1,30 @@
+
+
+Canvas test: 2d.strokeRect.globalalpha
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                          2d.strokeRect.globalalpha
                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                          strokeRect is affected by globalAlpha
                                                                                                                                                                                                                                                                                                                                          
+
+
+
                                                                                                                                                                                                                                                                                                                                          Actual output:
                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                          FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                          Expected output:
                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                            
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/drawing-rectangles-to-the-canvas/2d.strokeRect.globalcomposite.html b/testing/web-platform/tests/html/canvas/element/drawing-rectangles-to-the-canvas/2d.strokeRect.globalcomposite.html
new file mode 100644
index 0000000000..671db7f07a
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/drawing-rectangles-to-the-canvas/2d.strokeRect.globalcomposite.html
@@ -0,0 +1,30 @@
+
+
+Canvas test: 2d.strokeRect.globalcomposite
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                            2d.strokeRect.globalcomposite
                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                            strokeRect is not affected by globalCompositeOperation
                                                                                                                                                                                                                                                                                                                                            
+
+
+
                                                                                                                                                                                                                                                                                                                                            Actual output:
                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                            FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                            Expected output:
                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                              
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/drawing-rectangles-to-the-canvas/2d.strokeRect.negative.html b/testing/web-platform/tests/html/canvas/element/drawing-rectangles-to-the-canvas/2d.strokeRect.negative.html
new file mode 100644
index 0000000000..20bbc5bafe
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/drawing-rectangles-to-the-canvas/2d.strokeRect.negative.html
@@ -0,0 +1,37 @@
+
+
+Canvas test: 2d.strokeRect.negative
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                              2d.strokeRect.negative
                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                              strokeRect of negative sizes works
                                                                                                                                                                                                                                                                                                                                              
+
+
+
                                                                                                                                                                                                                                                                                                                                              Actual output:
                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                              FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                              Expected output:
                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/drawing-rectangles-to-the-canvas/2d.strokeRect.nonfinite.html b/testing/web-platform/tests/html/canvas/element/drawing-rectangles-to-the-canvas/2d.strokeRect.nonfinite.html
new file mode 100644
index 0000000000..af7a393c8f
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/drawing-rectangles-to-the-canvas/2d.strokeRect.nonfinite.html
@@ -0,0 +1,53 @@
+
+
+Canvas test: 2d.strokeRect.nonfinite
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                2d.strokeRect.nonfinite
                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                strokeRect() with Infinity/NaN is ignored
                                                                                                                                                                                                                                                                                                                                                
+
+
+
                                                                                                                                                                                                                                                                                                                                                Actual output:
                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                Expected output:
                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                  
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/drawing-rectangles-to-the-canvas/2d.strokeRect.path.html b/testing/web-platform/tests/html/canvas/element/drawing-rectangles-to-the-canvas/2d.strokeRect.path.html
new file mode 100644
index 0000000000..121789d864
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/drawing-rectangles-to-the-canvas/2d.strokeRect.path.html
@@ -0,0 +1,33 @@
+
+
+Canvas test: 2d.strokeRect.path
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                  2d.strokeRect.path
                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                  strokeRect does not affect the current path
                                                                                                                                                                                                                                                                                                                                                  
+
+
+
                                                                                                                                                                                                                                                                                                                                                  Actual output:
                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                  FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                  Expected output:
                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                    
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/drawing-rectangles-to-the-canvas/2d.strokeRect.shadow.html b/testing/web-platform/tests/html/canvas/element/drawing-rectangles-to-the-canvas/2d.strokeRect.shadow.html
new file mode 100644
index 0000000000..8e7a50a745
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/drawing-rectangles-to-the-canvas/2d.strokeRect.shadow.html
@@ -0,0 +1,36 @@
+
+
+Canvas test: 2d.strokeRect.shadow
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                    2d.strokeRect.shadow
                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                    strokeRect draws shadows
                                                                                                                                                                                                                                                                                                                                                    
+
+
+
                                                                                                                                                                                                                                                                                                                                                    Actual output:
                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                    FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                    Expected output:
                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                      
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/drawing-rectangles-to-the-canvas/2d.strokeRect.transform.html b/testing/web-platform/tests/html/canvas/element/drawing-rectangles-to-the-canvas/2d.strokeRect.transform.html
new file mode 100644
index 0000000000..312b9d2003
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/drawing-rectangles-to-the-canvas/2d.strokeRect.transform.html
@@ -0,0 +1,31 @@
+
+
+Canvas test: 2d.strokeRect.transform
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                      2d.strokeRect.transform
                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                      fillRect is affected by transforms
                                                                                                                                                                                                                                                                                                                                                      
+
+
+
                                                                                                                                                                                                                                                                                                                                                      Actual output:
                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                      FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                      Expected output:
                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                        
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/drawing-rectangles-to-the-canvas/2d.strokeRect.zero.1.html b/testing/web-platform/tests/html/canvas/element/drawing-rectangles-to-the-canvas/2d.strokeRect.zero.1.html
new file mode 100644
index 0000000000..c140a2668b
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/drawing-rectangles-to-the-canvas/2d.strokeRect.zero.1.html
@@ -0,0 +1,29 @@
+
+
+Canvas test: 2d.strokeRect.zero.1
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                        2d.strokeRect.zero.1
                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                        strokeRect of 0x0 pixels draws nothing
                                                                                                                                                                                                                                                                                                                                                        
+
+
+
                                                                                                                                                                                                                                                                                                                                                        Actual output:
                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                        FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                        Expected output:
                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                          
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/drawing-rectangles-to-the-canvas/2d.strokeRect.zero.2.html b/testing/web-platform/tests/html/canvas/element/drawing-rectangles-to-the-canvas/2d.strokeRect.zero.2.html
new file mode 100644
index 0000000000..f17620a302
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/drawing-rectangles-to-the-canvas/2d.strokeRect.zero.2.html
@@ -0,0 +1,31 @@
+
+
+Canvas test: 2d.strokeRect.zero.2
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                          2d.strokeRect.zero.2
                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                          strokeRect of 0x0 pixels draws nothing, including caps and joins
                                                                                                                                                                                                                                                                                                                                                          
+
+
+
                                                                                                                                                                                                                                                                                                                                                          Actual output:
                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                          FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                          Expected output:
                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                            
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/drawing-rectangles-to-the-canvas/2d.strokeRect.zero.3.html b/testing/web-platform/tests/html/canvas/element/drawing-rectangles-to-the-canvas/2d.strokeRect.zero.3.html
new file mode 100644
index 0000000000..e671ae4116
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/drawing-rectangles-to-the-canvas/2d.strokeRect.zero.3.html
@@ -0,0 +1,29 @@
+
+
+Canvas test: 2d.strokeRect.zero.3
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                            2d.strokeRect.zero.3
                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                            strokeRect of Nx0 pixels draws a straight line
                                                                                                                                                                                                                                                                                                                                                            
+
+
+
                                                                                                                                                                                                                                                                                                                                                            Actual output:
                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                            FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                            Expected output:
                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                              
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/drawing-rectangles-to-the-canvas/2d.strokeRect.zero.4.html b/testing/web-platform/tests/html/canvas/element/drawing-rectangles-to-the-canvas/2d.strokeRect.zero.4.html
new file mode 100644
index 0000000000..ff3c4040b3
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/drawing-rectangles-to-the-canvas/2d.strokeRect.zero.4.html
@@ -0,0 +1,30 @@
+
+
+Canvas test: 2d.strokeRect.zero.4
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                              2d.strokeRect.zero.4
                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                              strokeRect of Nx0 pixels draws a closed line with no caps
                                                                                                                                                                                                                                                                                                                                                              
+
+
+
                                                                                                                                                                                                                                                                                                                                                              Actual output:
                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                              FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                              Expected output:
                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/drawing-rectangles-to-the-canvas/2d.strokeRect.zero.5.html b/testing/web-platform/tests/html/canvas/element/drawing-rectangles-to-the-canvas/2d.strokeRect.zero.5.html
new file mode 100644
index 0000000000..809781ab43
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/drawing-rectangles-to-the-canvas/2d.strokeRect.zero.5.html
@@ -0,0 +1,30 @@
+
+
+Canvas test: 2d.strokeRect.zero.5
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                2d.strokeRect.zero.5
                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                strokeRect of Nx0 pixels draws a closed line with joins
                                                                                                                                                                                                                                                                                                                                                                
+
+
+
                                                                                                                                                                                                                                                                                                                                                                Actual output:
                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                Expected output:
                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                  
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/drawing-text-to-the-canvas/2d.text.draw.align.center.html b/testing/web-platform/tests/html/canvas/element/drawing-text-to-the-canvas/2d.text.draw.align.center.html
new file mode 100644
index 0000000000..71a7cae30a
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/drawing-text-to-the-canvas/2d.text.draw.align.center.html
@@ -0,0 +1,48 @@
+
+
+Canvas test: 2d.text.draw.align.center
+
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                  2d.text.draw.align.center
                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                  textAlign center is the center of the em squares (not the bounding box)
                                                                                                                                                                                                                                                                                                                                                                  
+
+
+A
+
                                                                                                                                                                                                                                                                                                                                                                  Actual output:
                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                  FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                  Expected output:
                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                    
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/drawing-text-to-the-canvas/2d.text.draw.align.end.ltr.html b/testing/web-platform/tests/html/canvas/element/drawing-text-to-the-canvas/2d.text.draw.align.end.ltr.html
new file mode 100644
index 0000000000..5bd7aa10b0
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/drawing-text-to-the-canvas/2d.text.draw.align.end.ltr.html
@@ -0,0 +1,48 @@
+
+
+Canvas test: 2d.text.draw.align.end.ltr
+
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                    2d.text.draw.align.end.ltr
                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                    textAlign end with ltr is the right edge
                                                                                                                                                                                                                                                                                                                                                                    
+
+
+A
+
                                                                                                                                                                                                                                                                                                                                                                    Actual output:
                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                    FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                    Expected output:
                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                      
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/drawing-text-to-the-canvas/2d.text.draw.align.end.rtl.html b/testing/web-platform/tests/html/canvas/element/drawing-text-to-the-canvas/2d.text.draw.align.end.rtl.html
new file mode 100644
index 0000000000..d37a29c558
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/drawing-text-to-the-canvas/2d.text.draw.align.end.rtl.html
@@ -0,0 +1,48 @@
+
+
+Canvas test: 2d.text.draw.align.end.rtl
+
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                      2d.text.draw.align.end.rtl
                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                      textAlign end with rtl is the left edge
                                                                                                                                                                                                                                                                                                                                                                      
+
+
+A
+
                                                                                                                                                                                                                                                                                                                                                                      Actual output:
                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                      FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                      Expected output:
                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                        
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/drawing-text-to-the-canvas/2d.text.draw.align.left.html b/testing/web-platform/tests/html/canvas/element/drawing-text-to-the-canvas/2d.text.draw.align.left.html
new file mode 100644
index 0000000000..5a4bdb6abb
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/drawing-text-to-the-canvas/2d.text.draw.align.left.html
@@ -0,0 +1,48 @@
+
+
+Canvas test: 2d.text.draw.align.left
+
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                        2d.text.draw.align.left
                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                        textAlign left is the left of the first em square (not the bounding box)
                                                                                                                                                                                                                                                                                                                                                                        
+
+
+A
+
                                                                                                                                                                                                                                                                                                                                                                        Actual output:
                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                        FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                        Expected output:
                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                          
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/drawing-text-to-the-canvas/2d.text.draw.align.right.html b/testing/web-platform/tests/html/canvas/element/drawing-text-to-the-canvas/2d.text.draw.align.right.html
new file mode 100644
index 0000000000..29e009e722
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/drawing-text-to-the-canvas/2d.text.draw.align.right.html
@@ -0,0 +1,48 @@
+
+
+Canvas test: 2d.text.draw.align.right
+
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                          2d.text.draw.align.right
                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                          textAlign right is the right of the last em square (not the bounding box)
                                                                                                                                                                                                                                                                                                                                                                          
+
+
+A
+
                                                                                                                                                                                                                                                                                                                                                                          Actual output:
                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                          FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                          Expected output:
                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                            
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/drawing-text-to-the-canvas/2d.text.draw.align.start.ltr.html b/testing/web-platform/tests/html/canvas/element/drawing-text-to-the-canvas/2d.text.draw.align.start.ltr.html
new file mode 100644
index 0000000000..d74a4b89e4
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/drawing-text-to-the-canvas/2d.text.draw.align.start.ltr.html
@@ -0,0 +1,48 @@
+
+
+Canvas test: 2d.text.draw.align.start.ltr
+
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                            2d.text.draw.align.start.ltr
                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                            textAlign start with ltr is the left edge
                                                                                                                                                                                                                                                                                                                                                                            
+
+
+A
+
                                                                                                                                                                                                                                                                                                                                                                            Actual output:
                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                            FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                            Expected output:
                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                              
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/drawing-text-to-the-canvas/2d.text.draw.align.start.rtl.html b/testing/web-platform/tests/html/canvas/element/drawing-text-to-the-canvas/2d.text.draw.align.start.rtl.html
new file mode 100644
index 0000000000..8dd671cf20
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/drawing-text-to-the-canvas/2d.text.draw.align.start.rtl.html
@@ -0,0 +1,48 @@
+
+
+Canvas test: 2d.text.draw.align.start.rtl
+
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                              2d.text.draw.align.start.rtl
                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                              textAlign start with rtl is the right edge
                                                                                                                                                                                                                                                                                                                                                                              
+
+
+A
+
                                                                                                                                                                                                                                                                                                                                                                              Actual output:
                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                              FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                              Expected output:
                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/drawing-text-to-the-canvas/2d.text.draw.fill.basic-manual.html b/testing/web-platform/tests/html/canvas/element/drawing-text-to-the-canvas/2d.text.draw.fill.basic-manual.html
new file mode 100644
index 0000000000..3652a2191d
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/drawing-text-to-the-canvas/2d.text.draw.fill.basic-manual.html
@@ -0,0 +1,32 @@
+
+
+Canvas test: 2d.text.draw.fill.basic
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                2d.text.draw.fill.basic
                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                fillText draws filled text
                                                                                                                                                                                                                                                                                                                                                                                
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                Actual output:
                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                Expected output:
                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                  
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/drawing-text-to-the-canvas/2d.text.draw.fill.basic.png b/testing/web-platform/tests/html/canvas/element/drawing-text-to-the-canvas/2d.text.draw.fill.basic.png
new file mode 100644
index 0000000000..70d7b046cb
Binary files /dev/null and b/testing/web-platform/tests/html/canvas/element/drawing-text-to-the-canvas/2d.text.draw.fill.basic.png differ
diff --git a/testing/web-platform/tests/html/canvas/element/drawing-text-to-the-canvas/2d.text.draw.fill.maxWidth.NaN.html b/testing/web-platform/tests/html/canvas/element/drawing-text-to-the-canvas/2d.text.draw.fill.maxWidth.NaN.html
new file mode 100644
index 0000000000..d33df3c78c
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/drawing-text-to-the-canvas/2d.text.draw.fill.maxWidth.NaN.html
@@ -0,0 +1,32 @@
+
+
+Canvas test: 2d.text.draw.fill.maxWidth.NaN
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                  2d.text.draw.fill.maxWidth.NaN
                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                  fillText handles maxWidth correctly
                                                                                                                                                                                                                                                                                                                                                                                  
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                  Actual output:
                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                  FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                  Expected output:
                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                    
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/drawing-text-to-the-canvas/2d.text.draw.fill.maxWidth.bound.html b/testing/web-platform/tests/html/canvas/element/drawing-text-to-the-canvas/2d.text.draw.fill.maxWidth.bound.html
new file mode 100644
index 0000000000..50c6729349
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/drawing-text-to-the-canvas/2d.text.draw.fill.maxWidth.bound.html
@@ -0,0 +1,45 @@
+
+
+Canvas test: 2d.text.draw.fill.maxWidth.bound
+
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                    2d.text.draw.fill.maxWidth.bound
                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                    fillText handles maxWidth based on line size, not bounding box size
                                                                                                                                                                                                                                                                                                                                                                                    
+
+
+A
+
                                                                                                                                                                                                                                                                                                                                                                                    Actual output:
                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                    FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                    Expected output:
                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                      
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/drawing-text-to-the-canvas/2d.text.draw.fill.maxWidth.fontface.html b/testing/web-platform/tests/html/canvas/element/drawing-text-to-the-canvas/2d.text.draw.fill.maxWidth.fontface.html
new file mode 100644
index 0000000000..1e133a6736
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/drawing-text-to-the-canvas/2d.text.draw.fill.maxWidth.fontface.html
@@ -0,0 +1,45 @@
+
+
+Canvas test: 2d.text.draw.fill.maxWidth.fontface
+
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                      2d.text.draw.fill.maxWidth.fontface
                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                      fillText works on @font-face fonts
                                                                                                                                                                                                                                                                                                                                                                                      
+
+
+A
+
                                                                                                                                                                                                                                                                                                                                                                                      Actual output:
                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                      FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                      Expected output:
                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                        
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/drawing-text-to-the-canvas/2d.text.draw.fill.maxWidth.large-manual.html b/testing/web-platform/tests/html/canvas/element/drawing-text-to-the-canvas/2d.text.draw.fill.maxWidth.large-manual.html
new file mode 100644
index 0000000000..761679ecf8
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/drawing-text-to-the-canvas/2d.text.draw.fill.maxWidth.large-manual.html
@@ -0,0 +1,31 @@
+
+
+Canvas test: 2d.text.draw.fill.maxWidth.large
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                        2d.text.draw.fill.maxWidth.large
                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                        fillText handles maxWidth correctly
                                                                                                                                                                                                                                                                                                                                                                                        
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                        Actual output:
                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                        FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                        Expected output:
                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                          
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/drawing-text-to-the-canvas/2d.text.draw.fill.maxWidth.large.png b/testing/web-platform/tests/html/canvas/element/drawing-text-to-the-canvas/2d.text.draw.fill.maxWidth.large.png
new file mode 100644
index 0000000000..70d7b046cb
Binary files /dev/null and b/testing/web-platform/tests/html/canvas/element/drawing-text-to-the-canvas/2d.text.draw.fill.maxWidth.large.png differ
diff --git a/testing/web-platform/tests/html/canvas/element/drawing-text-to-the-canvas/2d.text.draw.fill.maxWidth.negative.html b/testing/web-platform/tests/html/canvas/element/drawing-text-to-the-canvas/2d.text.draw.fill.maxWidth.negative.html
new file mode 100644
index 0000000000..b9febd1150
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/drawing-text-to-the-canvas/2d.text.draw.fill.maxWidth.negative.html
@@ -0,0 +1,32 @@
+
+
+Canvas test: 2d.text.draw.fill.maxWidth.negative
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                          2d.text.draw.fill.maxWidth.negative
                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                          fillText handles maxWidth correctly
                                                                                                                                                                                                                                                                                                                                                                                          
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                          Actual output:
                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                          FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                          Expected output:
                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                            
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/drawing-text-to-the-canvas/2d.text.draw.fill.maxWidth.small.html b/testing/web-platform/tests/html/canvas/element/drawing-text-to-the-canvas/2d.text.draw.fill.maxWidth.small.html
new file mode 100644
index 0000000000..0d7b8ff2fb
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/drawing-text-to-the-canvas/2d.text.draw.fill.maxWidth.small.html
@@ -0,0 +1,32 @@
+
+
+Canvas test: 2d.text.draw.fill.maxWidth.small
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                            2d.text.draw.fill.maxWidth.small
                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                            fillText handles maxWidth correctly
                                                                                                                                                                                                                                                                                                                                                                                            
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                            Actual output:
                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                            FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                            Expected output:
                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                              
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/drawing-text-to-the-canvas/2d.text.draw.fill.maxWidth.zero.html b/testing/web-platform/tests/html/canvas/element/drawing-text-to-the-canvas/2d.text.draw.fill.maxWidth.zero.html
new file mode 100644
index 0000000000..64a3fdc5a7
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/drawing-text-to-the-canvas/2d.text.draw.fill.maxWidth.zero.html
@@ -0,0 +1,32 @@
+
+
+Canvas test: 2d.text.draw.fill.maxWidth.zero
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                              2d.text.draw.fill.maxWidth.zero
                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                              fillText handles maxWidth correctly
                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                              Actual output:
                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                              FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                              Expected output:
                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/drawing-text-to-the-canvas/2d.text.draw.fill.rtl-manual.html b/testing/web-platform/tests/html/canvas/element/drawing-text-to-the-canvas/2d.text.draw.fill.rtl-manual.html
new file mode 100644
index 0000000000..07eeeb497a
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/drawing-text-to-the-canvas/2d.text.draw.fill.rtl-manual.html
@@ -0,0 +1,32 @@
+
+
+Canvas test: 2d.text.draw.fill.rtl
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                2d.text.draw.fill.rtl
                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                fillText respects Right-To-Left Override characters
                                                                                                                                                                                                                                                                                                                                                                                                
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/drawing-text-to-the-canvas/2d.text.draw.fill.rtl.png b/testing/web-platform/tests/html/canvas/element/drawing-text-to-the-canvas/2d.text.draw.fill.rtl.png
new file mode 100644
index 0000000000..70d7b046cb
Binary files /dev/null and b/testing/web-platform/tests/html/canvas/element/drawing-text-to-the-canvas/2d.text.draw.fill.rtl.png differ
diff --git a/testing/web-platform/tests/html/canvas/element/drawing-text-to-the-canvas/2d.text.draw.fill.unaffected.html b/testing/web-platform/tests/html/canvas/element/drawing-text-to-the-canvas/2d.text.draw.fill.unaffected.html
new file mode 100644
index 0000000000..cb1e7dbae0
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/drawing-text-to-the-canvas/2d.text.draw.fill.unaffected.html
@@ -0,0 +1,42 @@
+
+
+Canvas test: 2d.text.draw.fill.unaffected
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                  2d.text.draw.fill.unaffected
                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                  fillText does not start a new path or subpath
                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                  Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                  FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                  Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                    
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/drawing-text-to-the-canvas/2d.text.draw.fontface.html b/testing/web-platform/tests/html/canvas/element/drawing-text-to-the-canvas/2d.text.draw.fontface.html
new file mode 100644
index 0000000000..9adcf3560d
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/drawing-text-to-the-canvas/2d.text.draw.fontface.html
@@ -0,0 +1,45 @@
+
+
+Canvas test: 2d.text.draw.fontface
+
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                    2d.text.draw.fontface
                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                    
+
+
+A
+
                                                                                                                                                                                                                                                                                                                                                                                                    Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                    FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                    Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                      
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/drawing-text-to-the-canvas/2d.text.draw.fontface.notinpage.html b/testing/web-platform/tests/html/canvas/element/drawing-text-to-the-canvas/2d.text.draw.fontface.notinpage.html
new file mode 100644
index 0000000000..6ccb0c020a
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/drawing-text-to-the-canvas/2d.text.draw.fontface.notinpage.html
@@ -0,0 +1,44 @@
+
+
+Canvas test: 2d.text.draw.fontface.notinpage
+
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                      2d.text.draw.fontface.notinpage
                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                      @font-face fonts should work even if they are not used in the page
                                                                                                                                                                                                                                                                                                                                                                                                      
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                      Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                      FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                      Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                        
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/drawing-text-to-the-canvas/2d.text.draw.fontface.repeat.html b/testing/web-platform/tests/html/canvas/element/drawing-text-to-the-canvas/2d.text.draw.fontface.repeat.html
new file mode 100644
index 0000000000..457c48c3d1
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/drawing-text-to-the-canvas/2d.text.draw.fontface.repeat.html
@@ -0,0 +1,45 @@
+
+
+Canvas test: 2d.text.draw.fontface.repeat
+
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                        2d.text.draw.fontface.repeat
                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                        Draw with the font immediately, then wait a bit until and draw again. (This crashes some version of WebKit.)
                                                                                                                                                                                                                                                                                                                                                                                                        
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                        Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                        FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                        Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                          
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/drawing-text-to-the-canvas/2d.text.draw.kern.consistent-manual.html b/testing/web-platform/tests/html/canvas/element/drawing-text-to-the-canvas/2d.text.draw.kern.consistent-manual.html
new file mode 100644
index 0000000000..f27c2a7c24
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/drawing-text-to-the-canvas/2d.text.draw.kern.consistent-manual.html
@@ -0,0 +1,36 @@
+
+
+Canvas test: 2d.text.draw.kern.consistent
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                          2d.text.draw.kern.consistent
                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                          Stroked and filled text should have exactly the same kerning so it overlaps
                                                                                                                                                                                                                                                                                                                                                                                                          
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                          Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                          FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                          Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                            
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/drawing-text-to-the-canvas/2d.text.draw.space.basic.html b/testing/web-platform/tests/html/canvas/element/drawing-text-to-the-canvas/2d.text.draw.space.basic.html
new file mode 100644
index 0000000000..26f8114e20
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/drawing-text-to-the-canvas/2d.text.draw.space.basic.html
@@ -0,0 +1,43 @@
+
+
+Canvas test: 2d.text.draw.space.basic
+
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                            2d.text.draw.space.basic
                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                            U+0020 is rendered the correct size (1em wide)
                                                                                                                                                                                                                                                                                                                                                                                                            
+
+
+A
+
                                                                                                                                                                                                                                                                                                                                                                                                            Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                            FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                            Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/drawing-text-to-the-canvas/2d.text.draw.space.collapse.nonspace.html b/testing/web-platform/tests/html/canvas/element/drawing-text-to-the-canvas/2d.text.draw.space.collapse.nonspace.html
new file mode 100644
index 0000000000..e105ec358e
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/drawing-text-to-the-canvas/2d.text.draw.space.collapse.nonspace.html
@@ -0,0 +1,43 @@
+
+
+Canvas test: 2d.text.draw.space.collapse.nonspace
+
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                              2d.text.draw.space.collapse.nonspace
                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                              Non-space characters are not converted to U+0020 and collapsed
                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+A
+
                                                                                                                                                                                                                                                                                                                                                                                                              Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                              FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                              Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/drawing-text-to-the-canvas/2d.text.draw.stroke.basic-manual.html b/testing/web-platform/tests/html/canvas/element/drawing-text-to-the-canvas/2d.text.draw.stroke.basic-manual.html
new file mode 100644
index 0000000000..4481a0d25a
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/drawing-text-to-the-canvas/2d.text.draw.stroke.basic-manual.html
@@ -0,0 +1,33 @@
+
+
+Canvas test: 2d.text.draw.stroke.basic
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                2d.text.draw.stroke.basic
                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                strokeText draws stroked text
                                                                                                                                                                                                                                                                                                                                                                                                                
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/drawing-text-to-the-canvas/2d.text.draw.stroke.basic.png b/testing/web-platform/tests/html/canvas/element/drawing-text-to-the-canvas/2d.text.draw.stroke.basic.png
new file mode 100644
index 0000000000..fb3b5b830d
Binary files /dev/null and b/testing/web-platform/tests/html/canvas/element/drawing-text-to-the-canvas/2d.text.draw.stroke.basic.png differ
diff --git a/testing/web-platform/tests/html/canvas/element/drawing-text-to-the-canvas/2d.text.draw.stroke.unaffected.html b/testing/web-platform/tests/html/canvas/element/drawing-text-to-the-canvas/2d.text.draw.stroke.unaffected.html
new file mode 100644
index 0000000000..728765c1fe
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/drawing-text-to-the-canvas/2d.text.draw.stroke.unaffected.html
@@ -0,0 +1,43 @@
+
+
+Canvas test: 2d.text.draw.stroke.unaffected
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                  2d.text.draw.stroke.unaffected
                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                  strokeText does not start a new path or subpath
                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                  Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                  FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                  Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                    
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/drawing-text-to-the-canvas/2d.text.drawing.style.fontKerning.html b/testing/web-platform/tests/html/canvas/element/drawing-text-to-the-canvas/2d.text.drawing.style.fontKerning.html
new file mode 100644
index 0000000000..f6c3826317
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/drawing-text-to-the-canvas/2d.text.drawing.style.fontKerning.html
@@ -0,0 +1,34 @@
+
+
+Canvas test: 2d.text.drawing.style.fontKerning
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                    2d.text.drawing.style.fontKerning
                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                    Testing basic functionalities of fontKerning for canvas
                                                                                                                                                                                                                                                                                                                                                                                                                    
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                    Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                    FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                    
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                      
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/drawing-text-to-the-canvas/2d.text.drawing.style.fontKerning.with.uppercase.html b/testing/web-platform/tests/html/canvas/element/drawing-text-to-the-canvas/2d.text.drawing.style.fontKerning.with.uppercase.html
new file mode 100644
index 0000000000..db62fbe81a
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/drawing-text-to-the-canvas/2d.text.drawing.style.fontKerning.with.uppercase.html
@@ -0,0 +1,56 @@
+
+
+Canvas test: 2d.text.drawing.style.fontKerning.with.uppercase
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                      2d.text.drawing.style.fontKerning.with.uppercase
                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                      Testing basic functionalities of fontKerning for canvas
                                                                                                                                                                                                                                                                                                                                                                                                                      
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                      Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                      FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                      
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                        
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/drawing-text-to-the-canvas/2d.text.drawing.style.fontVariant.settings.html b/testing/web-platform/tests/html/canvas/element/drawing-text-to-the-canvas/2d.text.drawing.style.fontVariant.settings.html
new file mode 100644
index 0000000000..6fdd1454b2
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/drawing-text-to-the-canvas/2d.text.drawing.style.fontVariant.settings.html
@@ -0,0 +1,75 @@
+
+
+Canvas test: 2d.text.drawing.style.fontVariant.settings
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                        2d.text.drawing.style.fontVariant.settings
                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                        Testing basic functionalities of fontKerning for canvas
                                                                                                                                                                                                                                                                                                                                                                                                                        
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                        Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                        FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                        
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                          
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/drawing-text-to-the-canvas/2d.text.drawing.style.invalid.spacing.html b/testing/web-platform/tests/html/canvas/element/drawing-text-to-the-canvas/2d.text.drawing.style.invalid.spacing.html
new file mode 100644
index 0000000000..9bf2440900
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/drawing-text-to-the-canvas/2d.text.drawing.style.invalid.spacing.html
@@ -0,0 +1,43 @@
+
+
+Canvas test: 2d.text.drawing.style.invalid.spacing
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                          2d.text.drawing.style.invalid.spacing
                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                          Testing letter spacing and word spacing with invalid units
                                                                                                                                                                                                                                                                                                                                                                                                                          
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                          Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                          FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                          
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/drawing-text-to-the-canvas/2d.text.drawing.style.letterSpacing.change.font.html b/testing/web-platform/tests/html/canvas/element/drawing-text-to-the-canvas/2d.text.drawing.style.letterSpacing.change.font.html
new file mode 100644
index 0000000000..3b88ab6ee1
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/drawing-text-to-the-canvas/2d.text.drawing.style.letterSpacing.change.font.html
@@ -0,0 +1,46 @@
+
+
+Canvas test: 2d.text.drawing.style.letterSpacing.change.font
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                            2d.text.drawing.style.letterSpacing.change.font
                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                            Set letter spacing and word spacing to font dependent value and verify it works after font change.
                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                            Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                            FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/drawing-text-to-the-canvas/2d.text.drawing.style.letterSpacing.measure.html b/testing/web-platform/tests/html/canvas/element/drawing-text-to-the-canvas/2d.text.drawing.style.letterSpacing.measure.html
new file mode 100644
index 0000000000..ba8656ec1a
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/drawing-text-to-the-canvas/2d.text.drawing.style.letterSpacing.measure.html
@@ -0,0 +1,54 @@
+
+
+Canvas test: 2d.text.drawing.style.letterSpacing.measure
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                              2d.text.drawing.style.letterSpacing.measure
                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                              Testing letter spacing and word spacing
                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                              Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                              FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/drawing-text-to-the-canvas/2d.text.drawing.style.nonfinite.spacing.html b/testing/web-platform/tests/html/canvas/element/drawing-text-to-the-canvas/2d.text.drawing.style.nonfinite.spacing.html
new file mode 100644
index 0000000000..f197d22afa
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/drawing-text-to-the-canvas/2d.text.drawing.style.nonfinite.spacing.html
@@ -0,0 +1,38 @@
+
+
+Canvas test: 2d.text.drawing.style.nonfinite.spacing
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                2d.text.drawing.style.nonfinite.spacing
                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                Testing letter spacing and word spacing with nonfinite inputs
                                                                                                                                                                                                                                                                                                                                                                                                                                
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/drawing-text-to-the-canvas/2d.text.drawing.style.spacing.html b/testing/web-platform/tests/html/canvas/element/drawing-text-to-the-canvas/2d.text.drawing.style.spacing.html
new file mode 100644
index 0000000000..b5a411e1db
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/drawing-text-to-the-canvas/2d.text.drawing.style.spacing.html
@@ -0,0 +1,46 @@
+
+
+Canvas test: 2d.text.drawing.style.spacing
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                  2d.text.drawing.style.spacing
                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                  Testing letter spacing and word spacing
                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                  Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                  FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/drawing-text-to-the-canvas/2d.text.drawing.style.textRendering.settings.html b/testing/web-platform/tests/html/canvas/element/drawing-text-to-the-canvas/2d.text.drawing.style.textRendering.settings.html
new file mode 100644
index 0000000000..f6634ee1a0
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/drawing-text-to-the-canvas/2d.text.drawing.style.textRendering.settings.html
@@ -0,0 +1,57 @@
+
+
+Canvas test: 2d.text.drawing.style.textRendering.settings
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                    2d.text.drawing.style.textRendering.settings
                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                    Testing basic functionalities of textRendering in Canvas
                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                    Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                    FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/drawing-text-to-the-canvas/2d.text.drawing.style.wordSpacing.change.font.html b/testing/web-platform/tests/html/canvas/element/drawing-text-to-the-canvas/2d.text.drawing.style.wordSpacing.change.font.html
new file mode 100644
index 0000000000..d29bc8ec20
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/drawing-text-to-the-canvas/2d.text.drawing.style.wordSpacing.change.font.html
@@ -0,0 +1,46 @@
+
+
+Canvas test: 2d.text.drawing.style.wordSpacing.change.font
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                      2d.text.drawing.style.wordSpacing.change.font
                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                      Set word spacing and word spacing to font dependent value and verify it works after font change.
                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                      Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                      FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/drawing-text-to-the-canvas/2d.text.drawing.style.wordSpacing.measure.html b/testing/web-platform/tests/html/canvas/element/drawing-text-to-the-canvas/2d.text.drawing.style.wordSpacing.measure.html
new file mode 100644
index 0000000000..4898c23ee7
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/drawing-text-to-the-canvas/2d.text.drawing.style.wordSpacing.measure.html
@@ -0,0 +1,54 @@
+
+
+Canvas test: 2d.text.drawing.style.wordSpacing.measure
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                        2d.text.drawing.style.wordSpacing.measure
                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                        Testing if word spacing is working properly
                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                        Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                        FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/drawing-text-to-the-canvas/2d.text.measure.actualBoundingBox.html b/testing/web-platform/tests/html/canvas/element/drawing-text-to-the-canvas/2d.text.measure.actualBoundingBox.html
new file mode 100644
index 0000000000..44cff25d1a
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/drawing-text-to-the-canvas/2d.text.measure.actualBoundingBox.html
@@ -0,0 +1,65 @@
+
+
+Canvas test: 2d.text.measure.actualBoundingBox
+
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                          2d.text.measure.actualBoundingBox
                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                          Testing actualBoundingBox
                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
+
+A
+
                                                                                                                                                                                                                                                                                                                                                                                                                                          Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                          FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/drawing-text-to-the-canvas/2d.text.measure.advances.html b/testing/web-platform/tests/html/canvas/element/drawing-text-to-the-canvas/2d.text.measure.advances.html
new file mode 100644
index 0000000000..e7039c7879
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/drawing-text-to-the-canvas/2d.text.measure.advances.html
@@ -0,0 +1,57 @@
+
+
+Canvas test: 2d.text.measure.advances
+
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                            2d.text.measure.advances
                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                            Testing width advances
                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+
+A
+
                                                                                                                                                                                                                                                                                                                                                                                                                                            Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                            FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/drawing-text-to-the-canvas/2d.text.measure.baselines.html b/testing/web-platform/tests/html/canvas/element/drawing-text-to-the-canvas/2d.text.measure.baselines.html
new file mode 100644
index 0000000000..812949e25f
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/drawing-text-to-the-canvas/2d.text.measure.baselines.html
@@ -0,0 +1,50 @@
+
+
+Canvas test: 2d.text.measure.baselines
+
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.text.measure.baselines
                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                              Testing baselines
                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+A
+
                                                                                                                                                                                                                                                                                                                                                                                                                                              Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                              FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/drawing-text-to-the-canvas/2d.text.measure.boundingBox.direction.html b/testing/web-platform/tests/html/canvas/element/drawing-text-to-the-canvas/2d.text.measure.boundingBox.direction.html
new file mode 100644
index 0000000000..4387b6ca97
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/drawing-text-to-the-canvas/2d.text.measure.boundingBox.direction.html
@@ -0,0 +1,33 @@
+
+
+Canvas test: 2d.text.measure.boundingBox.direction
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                2d.text.measure.boundingBox.direction
                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                Measurement should follow text direction
                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/drawing-text-to-the-canvas/2d.text.measure.boundingBox.textAlign.html b/testing/web-platform/tests/html/canvas/element/drawing-text-to-the-canvas/2d.text.measure.boundingBox.textAlign.html
new file mode 100644
index 0000000000..65c030936b
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/drawing-text-to-the-canvas/2d.text.measure.boundingBox.textAlign.html
@@ -0,0 +1,33 @@
+
+
+Canvas test: 2d.text.measure.boundingBox.textAlign
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                  2d.text.measure.boundingBox.textAlign
                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                  Measurement should be related to textAlignment
                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                  Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                  FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/drawing-text-to-the-canvas/2d.text.measure.emHeights.html b/testing/web-platform/tests/html/canvas/element/drawing-text-to-the-canvas/2d.text.measure.emHeights.html
new file mode 100644
index 0000000000..7a4b779543
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/drawing-text-to-the-canvas/2d.text.measure.emHeights.html
@@ -0,0 +1,50 @@
+
+
+Canvas test: 2d.text.measure.emHeights
+
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                    2d.text.measure.emHeights
                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                    Testing emHeights
                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
+
+A
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                    Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                    FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/drawing-text-to-the-canvas/2d.text.measure.fontBoundingBox.ahem.html b/testing/web-platform/tests/html/canvas/element/drawing-text-to-the-canvas/2d.text.measure.fontBoundingBox.ahem.html
new file mode 100644
index 0000000000..7af141ac8e
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/drawing-text-to-the-canvas/2d.text.measure.fontBoundingBox.ahem.html
@@ -0,0 +1,48 @@
+
+
+Canvas test: 2d.text.measure.fontBoundingBox.ahem
+
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                      2d.text.measure.fontBoundingBox.ahem
                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                      Testing fontBoundingBox for font ahem
                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
+
+A
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                      Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                      FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/drawing-text-to-the-canvas/2d.text.measure.fontBoundingBox.html b/testing/web-platform/tests/html/canvas/element/drawing-text-to-the-canvas/2d.text.measure.fontBoundingBox.html
new file mode 100644
index 0000000000..6cdd7b8cf3
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/drawing-text-to-the-canvas/2d.text.measure.fontBoundingBox.html
@@ -0,0 +1,48 @@
+
+
+Canvas test: 2d.text.measure.fontBoundingBox
+
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                        2d.text.measure.fontBoundingBox
                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                        Testing fontBoundingBox
                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
+
+A
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                        Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                        FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/drawing-text-to-the-canvas/2d.text.measure.rtl.text.html b/testing/web-platform/tests/html/canvas/element/drawing-text-to-the-canvas/2d.text.measure.rtl.text.html
new file mode 100644
index 0000000000..539eab0715
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/drawing-text-to-the-canvas/2d.text.measure.rtl.text.html
@@ -0,0 +1,38 @@
+
+
+Canvas test: 2d.text.measure.rtl.text
+
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                          2d.text.measure.rtl.text
                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                          Measurement should follow canvas direction instead text direction
                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
+
+A
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                          Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                          FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/drawing-text-to-the-canvas/2d.text.measure.width.basic.html b/testing/web-platform/tests/html/canvas/element/drawing-text-to-the-canvas/2d.text.measure.width.basic.html
new file mode 100644
index 0000000000..4c528ed06a
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/drawing-text-to-the-canvas/2d.text.measure.width.basic.html
@@ -0,0 +1,47 @@
+
+
+Canvas test: 2d.text.measure.width.basic
+
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                            2d.text.measure.width.basic
                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                            The width of character is same as font used
                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+
+A
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                            Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                            FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/drawing-text-to-the-canvas/2d.text.measure.width.empty.html b/testing/web-platform/tests/html/canvas/element/drawing-text-to-the-canvas/2d.text.measure.width.empty.html
new file mode 100644
index 0000000000..8368631422
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/drawing-text-to-the-canvas/2d.text.measure.width.empty.html
@@ -0,0 +1,42 @@
+
+
+Canvas test: 2d.text.measure.width.empty
+
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.text.measure.width.empty
                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                              The empty string has zero width
                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+A
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                              Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                              FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/drawing-text-to-the-canvas/direction-inherit-rtl.html b/testing/web-platform/tests/html/canvas/element/drawing-text-to-the-canvas/direction-inherit-rtl.html
new file mode 100644
index 0000000000..0ad92181a0
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/drawing-text-to-the-canvas/direction-inherit-rtl.html
@@ -0,0 +1,31 @@
+
+
+HTML Canvas Test: the 'direction' property
+
+
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/drawing-text-to-the-canvas/direction-ltr.html b/testing/web-platform/tests/html/canvas/element/drawing-text-to-the-canvas/direction-ltr.html
new file mode 100644
index 0000000000..42a39ac589
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/drawing-text-to-the-canvas/direction-ltr.html
@@ -0,0 +1,31 @@
+
+
+HTML Canvas Test: the 'direction' property
+
+
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/drawing-text-to-the-canvas/direction-rtl.html b/testing/web-platform/tests/html/canvas/element/drawing-text-to-the-canvas/direction-rtl.html
new file mode 100644
index 0000000000..3cc67c69f5
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/drawing-text-to-the-canvas/direction-rtl.html
@@ -0,0 +1,31 @@
+
+
+HTML Canvas Test: the 'direction' property
+
+
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/drawing-text-to-the-canvas/reference/direction-default-ref.html b/testing/web-platform/tests/html/canvas/element/drawing-text-to-the-canvas/reference/direction-default-ref.html
new file mode 100644
index 0000000000..cef6df259c
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/drawing-text-to-the-canvas/reference/direction-default-ref.html
@@ -0,0 +1,27 @@
+
+
+HTML Canvas Reference: the 'direction' property
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/drawing-text-to-the-canvas/reference/direction-rtl-ref.html b/testing/web-platform/tests/html/canvas/element/drawing-text-to-the-canvas/reference/direction-rtl-ref.html
new file mode 100644
index 0000000000..010526d667
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/drawing-text-to-the-canvas/reference/direction-rtl-ref.html
@@ -0,0 +1,27 @@
+
+
+HTML Canvas Reference: the 'direction' property
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.CSSHSL.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.CSSHSL.html
new file mode 100644
index 0000000000..cc48c2e147
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.CSSHSL.html
@@ -0,0 +1,51 @@
+
+
+Canvas test: 2d.fillStyle.CSSHSL
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                2d.fillStyle.CSSHSL
                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                CSSHSL works as color input
                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.CSSRGB.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.CSSRGB.html
new file mode 100644
index 0000000000..0e3fcd4f67
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.CSSRGB.html
@@ -0,0 +1,60 @@
+
+
+Canvas test: 2d.fillStyle.CSSRGB
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                  2d.fillStyle.CSSRGB
                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                  CSSRGB works as color input
                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                  FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.colorObject.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.colorObject.html
new file mode 100644
index 0000000000..ae6507350c
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.colorObject.html
@@ -0,0 +1,43 @@
+
+
+Canvas test: 2d.fillStyle.colorObject
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                    2d.fillStyle.colorObject
                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                    ctx.fillStyle works with color objects
                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                    Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                    FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                    Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.colorObject.transparency.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.colorObject.transparency.html
new file mode 100644
index 0000000000..b48715f093
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.colorObject.transparency.html
@@ -0,0 +1,40 @@
+
+
+Canvas test: 2d.fillStyle.colorObject.transparency
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                      2d.fillStyle.colorObject.transparency
                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                      ctx.fillStyle with color objects has transparency
                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                      Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                      FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                      Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.default.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.default.html
new file mode 100644
index 0000000000..31e051ae6c
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.default.html
@@ -0,0 +1,27 @@
+
+
+Canvas test: 2d.fillStyle.default
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                        2d.fillStyle.default
                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                        Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                        FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.get.halftransparent.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.get.halftransparent.html
new file mode 100644
index 0000000000..4101bf4ce9
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.get.halftransparent.html
@@ -0,0 +1,28 @@
+
+
+Canvas test: 2d.fillStyle.get.halftransparent
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                          2d.fillStyle.get.halftransparent
                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                          Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                          FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.get.semitransparent.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.get.semitransparent.html
new file mode 100644
index 0000000000..9f17847309
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.get.semitransparent.html
@@ -0,0 +1,28 @@
+
+
+Canvas test: 2d.fillStyle.get.semitransparent
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                            2d.fillStyle.get.semitransparent
                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                            FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.get.solid.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.get.solid.html
new file mode 100644
index 0000000000..9361389541
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.get.solid.html
@@ -0,0 +1,28 @@
+
+
+Canvas test: 2d.fillStyle.get.solid
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.fillStyle.get.solid
                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                              FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.get.transparent.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.get.transparent.html
new file mode 100644
index 0000000000..fd381eb814
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.get.transparent.html
@@ -0,0 +1,28 @@
+
+
+Canvas test: 2d.fillStyle.get.transparent
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                2d.fillStyle.get.transparent
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.invalidstring.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.invalidstring.html
new file mode 100644
index 0000000000..16bb9235c9
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.invalidstring.html
@@ -0,0 +1,32 @@
+
+
+Canvas test: 2d.fillStyle.invalidstring
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  2d.fillStyle.invalidstring
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.invalidtype.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.invalidtype.html
new file mode 100644
index 0000000000..d218368359
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.invalidtype.html
@@ -0,0 +1,32 @@
+
+
+Canvas test: 2d.fillStyle.invalidtype
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    2d.fillStyle.invalidtype
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-hsl-1.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-hsl-1.html
new file mode 100644
index 0000000000..12a338e066
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-hsl-1.html
@@ -0,0 +1,31 @@
+
+
+Canvas test: 2d.fillStyle.parse.css-color-4-hsl-1
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      2d.fillStyle.parse.css-color-4-hsl-1
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-hsl-1.png b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-hsl-1.png
new file mode 100644
index 0000000000..2733836c99
Binary files /dev/null and b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-hsl-1.png differ
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-hsl-2.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-hsl-2.html
new file mode 100644
index 0000000000..71db4187ac
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-hsl-2.html
@@ -0,0 +1,31 @@
+
+
+Canvas test: 2d.fillStyle.parse.css-color-4-hsl-2
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        2d.fillStyle.parse.css-color-4-hsl-2
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-hsl-2.png b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-hsl-2.png
new file mode 100644
index 0000000000..c5661de82b
Binary files /dev/null and b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-hsl-2.png differ
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-hsl-3.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-hsl-3.html
new file mode 100644
index 0000000000..6c84e94b03
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-hsl-3.html
@@ -0,0 +1,31 @@
+
+
+Canvas test: 2d.fillStyle.parse.css-color-4-hsl-3
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          2d.fillStyle.parse.css-color-4-hsl-3
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-hsl-3.png b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-hsl-3.png
new file mode 100644
index 0000000000..c5661de82b
Binary files /dev/null and b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-hsl-3.png differ
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-hsl-4.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-hsl-4.html
new file mode 100644
index 0000000000..d37965702e
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-hsl-4.html
@@ -0,0 +1,31 @@
+
+
+Canvas test: 2d.fillStyle.parse.css-color-4-hsl-4
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            2d.fillStyle.parse.css-color-4-hsl-4
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-hsl-4.png b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-hsl-4.png
new file mode 100644
index 0000000000..c5661de82b
Binary files /dev/null and b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-hsl-4.png differ
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-hsl-5.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-hsl-5.html
new file mode 100644
index 0000000000..62ad91f1db
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-hsl-5.html
@@ -0,0 +1,31 @@
+
+
+Canvas test: 2d.fillStyle.parse.css-color-4-hsl-5
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.fillStyle.parse.css-color-4-hsl-5
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-hsl-5.png b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-hsl-5.png
new file mode 100644
index 0000000000..c5661de82b
Binary files /dev/null and b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-hsl-5.png differ
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-hsl-6.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-hsl-6.html
new file mode 100644
index 0000000000..9c879828d0
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-hsl-6.html
@@ -0,0 +1,31 @@
+
+
+Canvas test: 2d.fillStyle.parse.css-color-4-hsl-6
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                2d.fillStyle.parse.css-color-4-hsl-6
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-hsl-6.png b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-hsl-6.png
new file mode 100644
index 0000000000..2733836c99
Binary files /dev/null and b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-hsl-6.png differ
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-hsl-7.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-hsl-7.html
new file mode 100644
index 0000000000..c3e2334d44
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-hsl-7.html
@@ -0,0 +1,31 @@
+
+
+Canvas test: 2d.fillStyle.parse.css-color-4-hsl-7
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  2d.fillStyle.parse.css-color-4-hsl-7
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-hsl-7.png b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-hsl-7.png
new file mode 100644
index 0000000000..2733836c99
Binary files /dev/null and b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-hsl-7.png differ
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-hsl-8.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-hsl-8.html
new file mode 100644
index 0000000000..b9baf11e2b
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-hsl-8.html
@@ -0,0 +1,31 @@
+
+
+Canvas test: 2d.fillStyle.parse.css-color-4-hsl-8
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    2d.fillStyle.parse.css-color-4-hsl-8
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-hsl-8.png b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-hsl-8.png
new file mode 100644
index 0000000000..2733836c99
Binary files /dev/null and b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-hsl-8.png differ
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-hsl-9.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-hsl-9.html
new file mode 100644
index 0000000000..274585c3c9
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-hsl-9.html
@@ -0,0 +1,31 @@
+
+
+Canvas test: 2d.fillStyle.parse.css-color-4-hsl-9
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      2d.fillStyle.parse.css-color-4-hsl-9
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-hsl-9.png b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-hsl-9.png
new file mode 100644
index 0000000000..2733836c99
Binary files /dev/null and b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-hsl-9.png differ
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-hsla-1.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-hsla-1.html
new file mode 100644
index 0000000000..e4a5cbc094
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-hsla-1.html
@@ -0,0 +1,31 @@
+
+
+Canvas test: 2d.fillStyle.parse.css-color-4-hsla-1
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        2d.fillStyle.parse.css-color-4-hsla-1
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-hsla-1.png b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-hsla-1.png
new file mode 100644
index 0000000000..2733836c99
Binary files /dev/null and b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-hsla-1.png differ
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-hsla-2.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-hsla-2.html
new file mode 100644
index 0000000000..976bf71b87
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-hsla-2.html
@@ -0,0 +1,31 @@
+
+
+Canvas test: 2d.fillStyle.parse.css-color-4-hsla-2
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          2d.fillStyle.parse.css-color-4-hsla-2
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-hsla-2.png b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-hsla-2.png
new file mode 100644
index 0000000000..c5661de82b
Binary files /dev/null and b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-hsla-2.png differ
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-hsla-3.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-hsla-3.html
new file mode 100644
index 0000000000..16100e6a94
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-hsla-3.html
@@ -0,0 +1,31 @@
+
+
+Canvas test: 2d.fillStyle.parse.css-color-4-hsla-3
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            2d.fillStyle.parse.css-color-4-hsla-3
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-hsla-3.png b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-hsla-3.png
new file mode 100644
index 0000000000..c5661de82b
Binary files /dev/null and b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-hsla-3.png differ
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-hsla-4.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-hsla-4.html
new file mode 100644
index 0000000000..eb0158e392
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-hsla-4.html
@@ -0,0 +1,31 @@
+
+
+Canvas test: 2d.fillStyle.parse.css-color-4-hsla-4
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.fillStyle.parse.css-color-4-hsla-4
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-hsla-4.png b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-hsla-4.png
new file mode 100644
index 0000000000..c5661de82b
Binary files /dev/null and b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-hsla-4.png differ
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-hsla-5.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-hsla-5.html
new file mode 100644
index 0000000000..c1b7c566b3
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-hsla-5.html
@@ -0,0 +1,31 @@
+
+
+Canvas test: 2d.fillStyle.parse.css-color-4-hsla-5
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                2d.fillStyle.parse.css-color-4-hsla-5
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-hsla-5.png b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-hsla-5.png
new file mode 100644
index 0000000000..c5661de82b
Binary files /dev/null and b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-hsla-5.png differ
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-hsla-6.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-hsla-6.html
new file mode 100644
index 0000000000..06aa355d25
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-hsla-6.html
@@ -0,0 +1,31 @@
+
+
+Canvas test: 2d.fillStyle.parse.css-color-4-hsla-6
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  2d.fillStyle.parse.css-color-4-hsla-6
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-hsla-6.png b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-hsla-6.png
new file mode 100644
index 0000000000..2733836c99
Binary files /dev/null and b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-hsla-6.png differ
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-hsla-7.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-hsla-7.html
new file mode 100644
index 0000000000..eb66e2748a
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-hsla-7.html
@@ -0,0 +1,31 @@
+
+
+Canvas test: 2d.fillStyle.parse.css-color-4-hsla-7
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    2d.fillStyle.parse.css-color-4-hsla-7
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-hsla-7.png b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-hsla-7.png
new file mode 100644
index 0000000000..2733836c99
Binary files /dev/null and b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-hsla-7.png differ
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-hsla-8.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-hsla-8.html
new file mode 100644
index 0000000000..0c13368ac2
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-hsla-8.html
@@ -0,0 +1,31 @@
+
+
+Canvas test: 2d.fillStyle.parse.css-color-4-hsla-8
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      2d.fillStyle.parse.css-color-4-hsla-8
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-hsla-8.png b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-hsla-8.png
new file mode 100644
index 0000000000..2733836c99
Binary files /dev/null and b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-hsla-8.png differ
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-hsla-9.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-hsla-9.html
new file mode 100644
index 0000000000..fd2cedd56d
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-hsla-9.html
@@ -0,0 +1,31 @@
+
+
+Canvas test: 2d.fillStyle.parse.css-color-4-hsla-9
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        2d.fillStyle.parse.css-color-4-hsla-9
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-hsla-9.png b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-hsla-9.png
new file mode 100644
index 0000000000..2733836c99
Binary files /dev/null and b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-hsla-9.png differ
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-rgb-1.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-rgb-1.html
new file mode 100644
index 0000000000..7fa79bf07d
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-rgb-1.html
@@ -0,0 +1,31 @@
+
+
+Canvas test: 2d.fillStyle.parse.css-color-4-rgb-1
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          2d.fillStyle.parse.css-color-4-rgb-1
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-rgb-1.png b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-rgb-1.png
new file mode 100644
index 0000000000..2733836c99
Binary files /dev/null and b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-rgb-1.png differ
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-rgb-2.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-rgb-2.html
new file mode 100644
index 0000000000..89ef2183a7
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-rgb-2.html
@@ -0,0 +1,31 @@
+
+
+Canvas test: 2d.fillStyle.parse.css-color-4-rgb-2
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            2d.fillStyle.parse.css-color-4-rgb-2
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-rgb-2.png b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-rgb-2.png
new file mode 100644
index 0000000000..c5661de82b
Binary files /dev/null and b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-rgb-2.png differ
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-rgb-3.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-rgb-3.html
new file mode 100644
index 0000000000..6be6f06067
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-rgb-3.html
@@ -0,0 +1,31 @@
+
+
+Canvas test: 2d.fillStyle.parse.css-color-4-rgb-3
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.fillStyle.parse.css-color-4-rgb-3
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-rgb-3.png b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-rgb-3.png
new file mode 100644
index 0000000000..c5661de82b
Binary files /dev/null and b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-rgb-3.png differ
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-rgb-4.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-rgb-4.html
new file mode 100644
index 0000000000..23c69bd939
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-rgb-4.html
@@ -0,0 +1,31 @@
+
+
+Canvas test: 2d.fillStyle.parse.css-color-4-rgb-4
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                2d.fillStyle.parse.css-color-4-rgb-4
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-rgb-4.png b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-rgb-4.png
new file mode 100644
index 0000000000..2733836c99
Binary files /dev/null and b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-rgb-4.png differ
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-rgb-5.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-rgb-5.html
new file mode 100644
index 0000000000..b853fbf353
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-rgb-5.html
@@ -0,0 +1,31 @@
+
+
+Canvas test: 2d.fillStyle.parse.css-color-4-rgb-5
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  2d.fillStyle.parse.css-color-4-rgb-5
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-rgb-5.png b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-rgb-5.png
new file mode 100644
index 0000000000..c5661de82b
Binary files /dev/null and b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-rgb-5.png differ
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-rgb-6.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-rgb-6.html
new file mode 100644
index 0000000000..8a62fa22d8
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-rgb-6.html
@@ -0,0 +1,31 @@
+
+
+Canvas test: 2d.fillStyle.parse.css-color-4-rgb-6
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    2d.fillStyle.parse.css-color-4-rgb-6
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-rgb-6.png b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-rgb-6.png
new file mode 100644
index 0000000000..c5661de82b
Binary files /dev/null and b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-rgb-6.png differ
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-rgba-1.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-rgba-1.html
new file mode 100644
index 0000000000..66834dd706
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-rgba-1.html
@@ -0,0 +1,31 @@
+
+
+Canvas test: 2d.fillStyle.parse.css-color-4-rgba-1
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      2d.fillStyle.parse.css-color-4-rgba-1
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-rgba-1.png b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-rgba-1.png
new file mode 100644
index 0000000000..2733836c99
Binary files /dev/null and b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-rgba-1.png differ
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-rgba-2.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-rgba-2.html
new file mode 100644
index 0000000000..4a4cb78c62
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-rgba-2.html
@@ -0,0 +1,31 @@
+
+
+Canvas test: 2d.fillStyle.parse.css-color-4-rgba-2
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        2d.fillStyle.parse.css-color-4-rgba-2
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-rgba-2.png b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-rgba-2.png
new file mode 100644
index 0000000000..c5661de82b
Binary files /dev/null and b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-rgba-2.png differ
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-rgba-3.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-rgba-3.html
new file mode 100644
index 0000000000..51e9468786
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-rgba-3.html
@@ -0,0 +1,31 @@
+
+
+Canvas test: 2d.fillStyle.parse.css-color-4-rgba-3
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          2d.fillStyle.parse.css-color-4-rgba-3
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-rgba-3.png b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-rgba-3.png
new file mode 100644
index 0000000000..c5661de82b
Binary files /dev/null and b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-rgba-3.png differ
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-rgba-4.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-rgba-4.html
new file mode 100644
index 0000000000..07a65ac8f3
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-rgba-4.html
@@ -0,0 +1,31 @@
+
+
+Canvas test: 2d.fillStyle.parse.css-color-4-rgba-4
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            2d.fillStyle.parse.css-color-4-rgba-4
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-rgba-4.png b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-rgba-4.png
new file mode 100644
index 0000000000..2733836c99
Binary files /dev/null and b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-rgba-4.png differ
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-rgba-5.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-rgba-5.html
new file mode 100644
index 0000000000..2f798f47f3
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-rgba-5.html
@@ -0,0 +1,31 @@
+
+
+Canvas test: 2d.fillStyle.parse.css-color-4-rgba-5
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.fillStyle.parse.css-color-4-rgba-5
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-rgba-5.png b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-rgba-5.png
new file mode 100644
index 0000000000..c5661de82b
Binary files /dev/null and b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-rgba-5.png differ
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-rgba-6.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-rgba-6.html
new file mode 100644
index 0000000000..5ca7564a05
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-rgba-6.html
@@ -0,0 +1,31 @@
+
+
+Canvas test: 2d.fillStyle.parse.css-color-4-rgba-6
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                2d.fillStyle.parse.css-color-4-rgba-6
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-rgba-6.png b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-rgba-6.png
new file mode 100644
index 0000000000..c5661de82b
Binary files /dev/null and b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-rgba-6.png differ
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.current.basic.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.current.basic.html
new file mode 100644
index 0000000000..e48d05ceab
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.current.basic.html
@@ -0,0 +1,31 @@
+
+
+Canvas test: 2d.fillStyle.parse.current.basic
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  2d.fillStyle.parse.current.basic
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  currentColor is computed from the canvas element
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.current.changed.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.current.changed.html
new file mode 100644
index 0000000000..f298af5adb
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.current.changed.html
@@ -0,0 +1,32 @@
+
+
+Canvas test: 2d.fillStyle.parse.current.changed
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    2d.fillStyle.parse.current.changed
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    currentColor is computed when the attribute is set, not when it is painted
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.current.removed.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.current.removed.html
new file mode 100644
index 0000000000..2642b888e9
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.current.removed.html
@@ -0,0 +1,43 @@
+
+
+Canvas test: 2d.fillStyle.parse.current.removed
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      2d.fillStyle.parse.current.removed
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      currentColor is solid black when the canvas element is not in a document
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.current.removed.png b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.current.removed.png
new file mode 100644
index 0000000000..d638d03386
Binary files /dev/null and b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.current.removed.png differ
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.hex3.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.hex3.html
new file mode 100644
index 0000000000..9fbb275014
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.hex3.html
@@ -0,0 +1,31 @@
+
+
+Canvas test: 2d.fillStyle.parse.hex3
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        2d.fillStyle.parse.hex3
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.hex3.png b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.hex3.png
new file mode 100644
index 0000000000..2733836c99
Binary files /dev/null and b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.hex3.png differ
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.hex4.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.hex4.html
new file mode 100644
index 0000000000..fc79cc7d3f
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.hex4.html
@@ -0,0 +1,31 @@
+
+
+Canvas test: 2d.fillStyle.parse.hex4
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          2d.fillStyle.parse.hex4
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.hex4.png b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.hex4.png
new file mode 100644
index 0000000000..2733836c99
Binary files /dev/null and b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.hex4.png differ
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.hex6.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.hex6.html
new file mode 100644
index 0000000000..b946c30e17
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.hex6.html
@@ -0,0 +1,31 @@
+
+
+Canvas test: 2d.fillStyle.parse.hex6
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            2d.fillStyle.parse.hex6
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.hex6.png b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.hex6.png
new file mode 100644
index 0000000000..2733836c99
Binary files /dev/null and b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.hex6.png differ
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.hex8.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.hex8.html
new file mode 100644
index 0000000000..5865e98f3f
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.hex8.html
@@ -0,0 +1,31 @@
+
+
+Canvas test: 2d.fillStyle.parse.hex8
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.fillStyle.parse.hex8
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.hex8.png b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.hex8.png
new file mode 100644
index 0000000000..2733836c99
Binary files /dev/null and b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.hex8.png differ
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.hsl-1.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.hsl-1.html
new file mode 100644
index 0000000000..e169904889
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.hsl-1.html
@@ -0,0 +1,31 @@
+
+
+Canvas test: 2d.fillStyle.parse.hsl-1
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                2d.fillStyle.parse.hsl-1
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.hsl-1.png b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.hsl-1.png
new file mode 100644
index 0000000000..2733836c99
Binary files /dev/null and b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.hsl-1.png differ
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.hsl-2.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.hsl-2.html
new file mode 100644
index 0000000000..ec61f580eb
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.hsl-2.html
@@ -0,0 +1,31 @@
+
+
+Canvas test: 2d.fillStyle.parse.hsl-2
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  2d.fillStyle.parse.hsl-2
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.hsl-2.png b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.hsl-2.png
new file mode 100644
index 0000000000..2733836c99
Binary files /dev/null and b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.hsl-2.png differ
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.hsl-3.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.hsl-3.html
new file mode 100644
index 0000000000..0ec6fce487
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.hsl-3.html
@@ -0,0 +1,31 @@
+
+
+Canvas test: 2d.fillStyle.parse.hsl-3
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    2d.fillStyle.parse.hsl-3
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.hsl-3.png b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.hsl-3.png
new file mode 100644
index 0000000000..2733836c99
Binary files /dev/null and b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.hsl-3.png differ
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.hsl-4.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.hsl-4.html
new file mode 100644
index 0000000000..b3119da927
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.hsl-4.html
@@ -0,0 +1,31 @@
+
+
+Canvas test: 2d.fillStyle.parse.hsl-4
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      2d.fillStyle.parse.hsl-4
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.hsl-4.png b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.hsl-4.png
new file mode 100644
index 0000000000..2733836c99
Binary files /dev/null and b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.hsl-4.png differ
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.hsl-5.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.hsl-5.html
new file mode 100644
index 0000000000..1867bba7cb
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.hsl-5.html
@@ -0,0 +1,31 @@
+
+
+Canvas test: 2d.fillStyle.parse.hsl-5
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        2d.fillStyle.parse.hsl-5
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.hsl-5.png b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.hsl-5.png
new file mode 100644
index 0000000000..2733836c99
Binary files /dev/null and b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.hsl-5.png differ
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.hsl-6.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.hsl-6.html
new file mode 100644
index 0000000000..7a5e764d95
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.hsl-6.html
@@ -0,0 +1,31 @@
+
+
+Canvas test: 2d.fillStyle.parse.hsl-6
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          2d.fillStyle.parse.hsl-6
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.hsl-6.png b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.hsl-6.png
new file mode 100644
index 0000000000..2733836c99
Binary files /dev/null and b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.hsl-6.png differ
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.hsl-clamp-1.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.hsl-clamp-1.html
new file mode 100644
index 0000000000..f623320cd5
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.hsl-clamp-1.html
@@ -0,0 +1,31 @@
+
+
+Canvas test: 2d.fillStyle.parse.hsl-clamp-1
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            2d.fillStyle.parse.hsl-clamp-1
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.hsl-clamp-1.png b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.hsl-clamp-1.png
new file mode 100644
index 0000000000..2733836c99
Binary files /dev/null and b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.hsl-clamp-1.png differ
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.hsl-clamp-2.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.hsl-clamp-2.html
new file mode 100644
index 0000000000..0293acd9eb
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.hsl-clamp-2.html
@@ -0,0 +1,31 @@
+
+
+Canvas test: 2d.fillStyle.parse.hsl-clamp-2
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.fillStyle.parse.hsl-clamp-2
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.hsl-clamp-2.png b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.hsl-clamp-2.png
new file mode 100644
index 0000000000..88fd827985
Binary files /dev/null and b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.hsl-clamp-2.png differ
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.hsl-clamp-3.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.hsl-clamp-3.html
new file mode 100644
index 0000000000..2ea1a5115a
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.hsl-clamp-3.html
@@ -0,0 +1,31 @@
+
+
+Canvas test: 2d.fillStyle.parse.hsl-clamp-3
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                2d.fillStyle.parse.hsl-clamp-3
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.hsl-clamp-3.png b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.hsl-clamp-3.png
new file mode 100644
index 0000000000..bf48767a88
Binary files /dev/null and b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.hsl-clamp-3.png differ
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.hsl-clamp-4.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.hsl-clamp-4.html
new file mode 100644
index 0000000000..add688ebc9
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.hsl-clamp-4.html
@@ -0,0 +1,31 @@
+
+
+Canvas test: 2d.fillStyle.parse.hsl-clamp-4
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  2d.fillStyle.parse.hsl-clamp-4
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.hsl-clamp-4.png b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.hsl-clamp-4.png
new file mode 100644
index 0000000000..d638d03386
Binary files /dev/null and b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.hsl-clamp-4.png differ
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.hsla-1.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.hsla-1.html
new file mode 100644
index 0000000000..38427cfc3a
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.hsla-1.html
@@ -0,0 +1,31 @@
+
+
+Canvas test: 2d.fillStyle.parse.hsla-1
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    2d.fillStyle.parse.hsla-1
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.hsla-1.png b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.hsla-1.png
new file mode 100644
index 0000000000..2aa6265f06
Binary files /dev/null and b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.hsla-1.png differ
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.hsla-2.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.hsla-2.html
new file mode 100644
index 0000000000..01a83676ad
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.hsla-2.html
@@ -0,0 +1,31 @@
+
+
+Canvas test: 2d.fillStyle.parse.hsla-2
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      2d.fillStyle.parse.hsla-2
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.hsla-2.png b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.hsla-2.png
new file mode 100644
index 0000000000..2733836c99
Binary files /dev/null and b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.hsla-2.png differ
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.hsla-clamp-1.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.hsla-clamp-1.html
new file mode 100644
index 0000000000..b7914e3a02
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.hsla-clamp-1.html
@@ -0,0 +1,31 @@
+
+
+Canvas test: 2d.fillStyle.parse.hsla-clamp-1
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        2d.fillStyle.parse.hsla-clamp-1
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.hsla-clamp-1.png b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.hsla-clamp-1.png
new file mode 100644
index 0000000000..2733836c99
Binary files /dev/null and b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.hsla-clamp-1.png differ
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.hsla-clamp-2.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.hsla-clamp-2.html
new file mode 100644
index 0000000000..94b6237456
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.hsla-clamp-2.html
@@ -0,0 +1,31 @@
+
+
+Canvas test: 2d.fillStyle.parse.hsla-clamp-2
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          2d.fillStyle.parse.hsla-clamp-2
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.hsla-clamp-2.png b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.hsla-clamp-2.png
new file mode 100644
index 0000000000..88fd827985
Binary files /dev/null and b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.hsla-clamp-2.png differ
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.hsla-clamp-3.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.hsla-clamp-3.html
new file mode 100644
index 0000000000..bc2466b6b5
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.hsla-clamp-3.html
@@ -0,0 +1,31 @@
+
+
+Canvas test: 2d.fillStyle.parse.hsla-clamp-3
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            2d.fillStyle.parse.hsla-clamp-3
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.hsla-clamp-3.png b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.hsla-clamp-3.png
new file mode 100644
index 0000000000..bf48767a88
Binary files /dev/null and b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.hsla-clamp-3.png differ
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.hsla-clamp-4.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.hsla-clamp-4.html
new file mode 100644
index 0000000000..35c0d00011
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.hsla-clamp-4.html
@@ -0,0 +1,31 @@
+
+
+Canvas test: 2d.fillStyle.parse.hsla-clamp-4
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.fillStyle.parse.hsla-clamp-4
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.hsla-clamp-4.png b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.hsla-clamp-4.png
new file mode 100644
index 0000000000..d638d03386
Binary files /dev/null and b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.hsla-clamp-4.png differ
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.hsla-clamp-5.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.hsla-clamp-5.html
new file mode 100644
index 0000000000..13fac2fd58
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.hsla-clamp-5.html
@@ -0,0 +1,31 @@
+
+
+Canvas test: 2d.fillStyle.parse.hsla-clamp-5
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                2d.fillStyle.parse.hsla-clamp-5
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.hsla-clamp-5.png b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.hsla-clamp-5.png
new file mode 100644
index 0000000000..2733836c99
Binary files /dev/null and b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.hsla-clamp-5.png differ
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.hsla-clamp-6.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.hsla-clamp-6.html
new file mode 100644
index 0000000000..ba76ad6a99
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.hsla-clamp-6.html
@@ -0,0 +1,31 @@
+
+
+Canvas test: 2d.fillStyle.parse.hsla-clamp-6
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  2d.fillStyle.parse.hsla-clamp-6
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.hsla-clamp-6.png b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.hsla-clamp-6.png
new file mode 100644
index 0000000000..eeedd0ff05
Binary files /dev/null and b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.hsla-clamp-6.png differ
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.html4.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.html4.html
new file mode 100644
index 0000000000..ae54397c92
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.html4.html
@@ -0,0 +1,31 @@
+
+
+Canvas test: 2d.fillStyle.parse.html4
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    2d.fillStyle.parse.html4
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.html4.png b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.html4.png
new file mode 100644
index 0000000000..2733836c99
Binary files /dev/null and b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.html4.png differ
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.invalid.css-color-4-hsl-1.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.invalid.css-color-4-hsl-1.html
new file mode 100644
index 0000000000..1850125baa
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.invalid.css-color-4-hsl-1.html
@@ -0,0 +1,31 @@
+
+
+Canvas test: 2d.fillStyle.parse.invalid.css-color-4-hsl-1
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      2d.fillStyle.parse.invalid.css-color-4-hsl-1
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.invalid.css-color-4-hsl-2.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.invalid.css-color-4-hsl-2.html
new file mode 100644
index 0000000000..b4fd4a6fd9
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.invalid.css-color-4-hsl-2.html
@@ -0,0 +1,31 @@
+
+
+Canvas test: 2d.fillStyle.parse.invalid.css-color-4-hsl-2
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        2d.fillStyle.parse.invalid.css-color-4-hsl-2
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.invalid.css-color-4-hsl-3.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.invalid.css-color-4-hsl-3.html
new file mode 100644
index 0000000000..224da3a981
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.invalid.css-color-4-hsl-3.html
@@ -0,0 +1,31 @@
+
+
+Canvas test: 2d.fillStyle.parse.invalid.css-color-4-hsl-3
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          2d.fillStyle.parse.invalid.css-color-4-hsl-3
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.invalid.css-color-4-hsl-4.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.invalid.css-color-4-hsl-4.html
new file mode 100644
index 0000000000..0e4b77ba80
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.invalid.css-color-4-hsl-4.html
@@ -0,0 +1,31 @@
+
+
+Canvas test: 2d.fillStyle.parse.invalid.css-color-4-hsl-4
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            2d.fillStyle.parse.invalid.css-color-4-hsl-4
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.invalid.css-color-4-hsl-5.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.invalid.css-color-4-hsl-5.html
new file mode 100644
index 0000000000..08e03db12f
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.invalid.css-color-4-hsl-5.html
@@ -0,0 +1,31 @@
+
+
+Canvas test: 2d.fillStyle.parse.invalid.css-color-4-hsl-5
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.fillStyle.parse.invalid.css-color-4-hsl-5
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.invalid.css-color-4-hsla-1.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.invalid.css-color-4-hsla-1.html
new file mode 100644
index 0000000000..62f82953fd
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.invalid.css-color-4-hsla-1.html
@@ -0,0 +1,31 @@
+
+
+Canvas test: 2d.fillStyle.parse.invalid.css-color-4-hsla-1
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                2d.fillStyle.parse.invalid.css-color-4-hsla-1
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.invalid.css-color-4-hsla-2.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.invalid.css-color-4-hsla-2.html
new file mode 100644
index 0000000000..d6b78e923d
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.invalid.css-color-4-hsla-2.html
@@ -0,0 +1,31 @@
+
+
+Canvas test: 2d.fillStyle.parse.invalid.css-color-4-hsla-2
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  2d.fillStyle.parse.invalid.css-color-4-hsla-2
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.invalid.css-color-4-hsla-3.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.invalid.css-color-4-hsla-3.html
new file mode 100644
index 0000000000..c5717406a2
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.invalid.css-color-4-hsla-3.html
@@ -0,0 +1,31 @@
+
+
+Canvas test: 2d.fillStyle.parse.invalid.css-color-4-hsla-3
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    2d.fillStyle.parse.invalid.css-color-4-hsla-3
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.invalid.css-color-4-rgb-1.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.invalid.css-color-4-rgb-1.html
new file mode 100644
index 0000000000..01ff94e8b0
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.invalid.css-color-4-rgb-1.html
@@ -0,0 +1,31 @@
+
+
+Canvas test: 2d.fillStyle.parse.invalid.css-color-4-rgb-1
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      2d.fillStyle.parse.invalid.css-color-4-rgb-1
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.invalid.css-color-4-rgb-2.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.invalid.css-color-4-rgb-2.html
new file mode 100644
index 0000000000..2b782e35fc
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.invalid.css-color-4-rgb-2.html
@@ -0,0 +1,31 @@
+
+
+Canvas test: 2d.fillStyle.parse.invalid.css-color-4-rgb-2
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        2d.fillStyle.parse.invalid.css-color-4-rgb-2
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.invalid.css-color-4-rgb-3.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.invalid.css-color-4-rgb-3.html
new file mode 100644
index 0000000000..54849f6c55
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.invalid.css-color-4-rgb-3.html
@@ -0,0 +1,31 @@
+
+
+Canvas test: 2d.fillStyle.parse.invalid.css-color-4-rgb-3
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          2d.fillStyle.parse.invalid.css-color-4-rgb-3
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.invalid.css-color-4-rgb-4.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.invalid.css-color-4-rgb-4.html
new file mode 100644
index 0000000000..97d5748aaf
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.invalid.css-color-4-rgb-4.html
@@ -0,0 +1,31 @@
+
+
+Canvas test: 2d.fillStyle.parse.invalid.css-color-4-rgb-4
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            2d.fillStyle.parse.invalid.css-color-4-rgb-4
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.invalid.css-color-4-rgb-5.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.invalid.css-color-4-rgb-5.html
new file mode 100644
index 0000000000..666c3c3d3e
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.invalid.css-color-4-rgb-5.html
@@ -0,0 +1,31 @@
+
+
+Canvas test: 2d.fillStyle.parse.invalid.css-color-4-rgb-5
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.fillStyle.parse.invalid.css-color-4-rgb-5
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.invalid.css-color-4-rgba-1.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.invalid.css-color-4-rgba-1.html
new file mode 100644
index 0000000000..fefe336c19
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.invalid.css-color-4-rgba-1.html
@@ -0,0 +1,31 @@
+
+
+Canvas test: 2d.fillStyle.parse.invalid.css-color-4-rgba-1
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                2d.fillStyle.parse.invalid.css-color-4-rgba-1
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.invalid.css-color-4-rgba-2.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.invalid.css-color-4-rgba-2.html
new file mode 100644
index 0000000000..bf12006745
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.invalid.css-color-4-rgba-2.html
@@ -0,0 +1,31 @@
+
+
+Canvas test: 2d.fillStyle.parse.invalid.css-color-4-rgba-2
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  2d.fillStyle.parse.invalid.css-color-4-rgba-2
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.invalid.css-color-4-rgba-3.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.invalid.css-color-4-rgba-3.html
new file mode 100644
index 0000000000..a4e4e906af
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.invalid.css-color-4-rgba-3.html
@@ -0,0 +1,31 @@
+
+
+Canvas test: 2d.fillStyle.parse.invalid.css-color-4-rgba-3
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    2d.fillStyle.parse.invalid.css-color-4-rgba-3
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.invalid.hex1.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.invalid.hex1.html
new file mode 100644
index 0000000000..04c67e343e
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.invalid.hex1.html
@@ -0,0 +1,31 @@
+
+
+Canvas test: 2d.fillStyle.parse.invalid.hex1
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      2d.fillStyle.parse.invalid.hex1
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.invalid.hex2.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.invalid.hex2.html
new file mode 100644
index 0000000000..7027db50ca
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.invalid.hex2.html
@@ -0,0 +1,31 @@
+
+
+Canvas test: 2d.fillStyle.parse.invalid.hex2
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        2d.fillStyle.parse.invalid.hex2
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.invalid.hex3.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.invalid.hex3.html
new file mode 100644
index 0000000000..ae7a32a5a4
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.invalid.hex3.html
@@ -0,0 +1,31 @@
+
+
+Canvas test: 2d.fillStyle.parse.invalid.hex3
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          2d.fillStyle.parse.invalid.hex3
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.invalid.hex4.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.invalid.hex4.html
new file mode 100644
index 0000000000..d355309c19
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.invalid.hex4.html
@@ -0,0 +1,31 @@
+
+
+Canvas test: 2d.fillStyle.parse.invalid.hex4
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            2d.fillStyle.parse.invalid.hex4
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.invalid.hex5.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.invalid.hex5.html
new file mode 100644
index 0000000000..0b80566b8c
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.invalid.hex5.html
@@ -0,0 +1,31 @@
+
+
+Canvas test: 2d.fillStyle.parse.invalid.hex5
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.fillStyle.parse.invalid.hex5
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.invalid.hex6.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.invalid.hex6.html
new file mode 100644
index 0000000000..02b75c3aba
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.invalid.hex6.html
@@ -0,0 +1,31 @@
+
+
+Canvas test: 2d.fillStyle.parse.invalid.hex6
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                2d.fillStyle.parse.invalid.hex6
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.invalid.hex7.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.invalid.hex7.html
new file mode 100644
index 0000000000..6a73bc1f75
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.invalid.hex7.html
@@ -0,0 +1,31 @@
+
+
+Canvas test: 2d.fillStyle.parse.invalid.hex7
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  2d.fillStyle.parse.invalid.hex7
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.invalid.hex8.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.invalid.hex8.html
new file mode 100644
index 0000000000..3a03959ec4
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.invalid.hex8.html
@@ -0,0 +1,31 @@
+
+
+Canvas test: 2d.fillStyle.parse.invalid.hex8
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    2d.fillStyle.parse.invalid.hex8
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.invalid.hsl-1.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.invalid.hsl-1.html
new file mode 100644
index 0000000000..38a01fc107
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.invalid.hsl-1.html
@@ -0,0 +1,31 @@
+
+
+Canvas test: 2d.fillStyle.parse.invalid.hsl-1
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      2d.fillStyle.parse.invalid.hsl-1
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.invalid.hsl-2.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.invalid.hsl-2.html
new file mode 100644
index 0000000000..6783a18e87
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.invalid.hsl-2.html
@@ -0,0 +1,31 @@
+
+
+Canvas test: 2d.fillStyle.parse.invalid.hsl-2
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        2d.fillStyle.parse.invalid.hsl-2
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.invalid.hsl-3.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.invalid.hsl-3.html
new file mode 100644
index 0000000000..8f9137e4d7
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.invalid.hsl-3.html
@@ -0,0 +1,31 @@
+
+
+Canvas test: 2d.fillStyle.parse.invalid.hsl-3
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          2d.fillStyle.parse.invalid.hsl-3
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.invalid.hsl-4.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.invalid.hsl-4.html
new file mode 100644
index 0000000000..56c7228b41
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.invalid.hsl-4.html
@@ -0,0 +1,31 @@
+
+
+Canvas test: 2d.fillStyle.parse.invalid.hsl-4
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            2d.fillStyle.parse.invalid.hsl-4
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.invalid.hsl-5.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.invalid.hsl-5.html
new file mode 100644
index 0000000000..df84f6854f
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.invalid.hsl-5.html
@@ -0,0 +1,31 @@
+
+
+Canvas test: 2d.fillStyle.parse.invalid.hsl-5
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.fillStyle.parse.invalid.hsl-5
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.invalid.hsl-6.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.invalid.hsl-6.html
new file mode 100644
index 0000000000..2a7d0753d9
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.invalid.hsl-6.html
@@ -0,0 +1,31 @@
+
+
+Canvas test: 2d.fillStyle.parse.invalid.hsl-6
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                2d.fillStyle.parse.invalid.hsl-6
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.invalid.hsla-1.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.invalid.hsla-1.html
new file mode 100644
index 0000000000..5d22135c5c
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.invalid.hsla-1.html
@@ -0,0 +1,31 @@
+
+
+Canvas test: 2d.fillStyle.parse.invalid.hsla-1
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  2d.fillStyle.parse.invalid.hsla-1
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.invalid.hsla-2.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.invalid.hsla-2.html
new file mode 100644
index 0000000000..f1a29cdac2
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.invalid.hsla-2.html
@@ -0,0 +1,31 @@
+
+
+Canvas test: 2d.fillStyle.parse.invalid.hsla-2
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    2d.fillStyle.parse.invalid.hsla-2
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.invalid.hsla-3.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.invalid.hsla-3.html
new file mode 100644
index 0000000000..e48d086ef2
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.invalid.hsla-3.html
@@ -0,0 +1,31 @@
+
+
+Canvas test: 2d.fillStyle.parse.invalid.hsla-3
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      2d.fillStyle.parse.invalid.hsla-3
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.invalid.name-1.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.invalid.name-1.html
new file mode 100644
index 0000000000..80433bcffd
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.invalid.name-1.html
@@ -0,0 +1,31 @@
+
+
+Canvas test: 2d.fillStyle.parse.invalid.name-1
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        2d.fillStyle.parse.invalid.name-1
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.invalid.name-2.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.invalid.name-2.html
new file mode 100644
index 0000000000..e1a49f97c9
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.invalid.name-2.html
@@ -0,0 +1,31 @@
+
+
+Canvas test: 2d.fillStyle.parse.invalid.name-2
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          2d.fillStyle.parse.invalid.name-2
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.invalid.name-3.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.invalid.name-3.html
new file mode 100644
index 0000000000..c8a7f2e658
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.invalid.name-3.html
@@ -0,0 +1,31 @@
+
+
+Canvas test: 2d.fillStyle.parse.invalid.name-3
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            2d.fillStyle.parse.invalid.name-3
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.invalid.name-4.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.invalid.name-4.html
new file mode 100644
index 0000000000..b9c491fd31
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.invalid.name-4.html
@@ -0,0 +1,31 @@
+
+
+Canvas test: 2d.fillStyle.parse.invalid.name-4
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.fillStyle.parse.invalid.name-4
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.invalid.name-5.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.invalid.name-5.html
new file mode 100644
index 0000000000..15dab0bef5
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.invalid.name-5.html
@@ -0,0 +1,31 @@
+
+
+Canvas test: 2d.fillStyle.parse.invalid.name-5
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                2d.fillStyle.parse.invalid.name-5
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.invalid.rgb-1.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.invalid.rgb-1.html
new file mode 100644
index 0000000000..7ab4a42fa8
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.invalid.rgb-1.html
@@ -0,0 +1,31 @@
+
+
+Canvas test: 2d.fillStyle.parse.invalid.rgb-1
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  2d.fillStyle.parse.invalid.rgb-1
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.invalid.rgb-2.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.invalid.rgb-2.html
new file mode 100644
index 0000000000..1aa36bb32b
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.invalid.rgb-2.html
@@ -0,0 +1,31 @@
+
+
+Canvas test: 2d.fillStyle.parse.invalid.rgb-2
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    2d.fillStyle.parse.invalid.rgb-2
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.invalid.rgb-3.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.invalid.rgb-3.html
new file mode 100644
index 0000000000..7ce48c1b7e
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.invalid.rgb-3.html
@@ -0,0 +1,31 @@
+
+
+Canvas test: 2d.fillStyle.parse.invalid.rgb-3
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      2d.fillStyle.parse.invalid.rgb-3
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.invalid.rgba-1.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.invalid.rgba-1.html
new file mode 100644
index 0000000000..d3bd36dcf2
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.invalid.rgba-1.html
@@ -0,0 +1,31 @@
+
+
+Canvas test: 2d.fillStyle.parse.invalid.rgba-1
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        2d.fillStyle.parse.invalid.rgba-1
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.invalid.rgba-2.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.invalid.rgba-2.html
new file mode 100644
index 0000000000..0f468b66fa
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.invalid.rgba-2.html
@@ -0,0 +1,31 @@
+
+
+Canvas test: 2d.fillStyle.parse.invalid.rgba-2
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          2d.fillStyle.parse.invalid.rgba-2
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.invalid.rgba-3.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.invalid.rgba-3.html
new file mode 100644
index 0000000000..20da461ad9
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.invalid.rgba-3.html
@@ -0,0 +1,31 @@
+
+
+Canvas test: 2d.fillStyle.parse.invalid.rgba-3
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            2d.fillStyle.parse.invalid.rgba-3
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.invalid.rgba-4.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.invalid.rgba-4.html
new file mode 100644
index 0000000000..6dc36ea341
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.invalid.rgba-4.html
@@ -0,0 +1,31 @@
+
+
+Canvas test: 2d.fillStyle.parse.invalid.rgba-4
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.fillStyle.parse.invalid.rgba-4
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.invalid.rgba-5.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.invalid.rgba-5.html
new file mode 100644
index 0000000000..86afaa7097
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.invalid.rgba-5.html
@@ -0,0 +1,31 @@
+
+
+Canvas test: 2d.fillStyle.parse.invalid.rgba-5
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                2d.fillStyle.parse.invalid.rgba-5
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.rgb-clamp-1.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.rgb-clamp-1.html
new file mode 100644
index 0000000000..dfaac14637
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.rgb-clamp-1.html
@@ -0,0 +1,31 @@
+
+
+Canvas test: 2d.fillStyle.parse.rgb-clamp-1
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  2d.fillStyle.parse.rgb-clamp-1
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Assumes colors are clamped to [0,255].
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.rgb-clamp-1.png b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.rgb-clamp-1.png
new file mode 100644
index 0000000000..2733836c99
Binary files /dev/null and b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.rgb-clamp-1.png differ
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.rgb-clamp-2.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.rgb-clamp-2.html
new file mode 100644
index 0000000000..5247f46731
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.rgb-clamp-2.html
@@ -0,0 +1,31 @@
+
+
+Canvas test: 2d.fillStyle.parse.rgb-clamp-2
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    2d.fillStyle.parse.rgb-clamp-2
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    Assumes colors are clamped to [0,255].
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.rgb-clamp-2.png b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.rgb-clamp-2.png
new file mode 100644
index 0000000000..2733836c99
Binary files /dev/null and b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.rgb-clamp-2.png differ
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.rgb-clamp-3.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.rgb-clamp-3.html
new file mode 100644
index 0000000000..8db471c3c0
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.rgb-clamp-3.html
@@ -0,0 +1,31 @@
+
+
+Canvas test: 2d.fillStyle.parse.rgb-clamp-3
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      2d.fillStyle.parse.rgb-clamp-3
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      Assumes colors are clamped to [0,255].
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.rgb-clamp-3.png b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.rgb-clamp-3.png
new file mode 100644
index 0000000000..2733836c99
Binary files /dev/null and b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.rgb-clamp-3.png differ
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.rgb-clamp-4.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.rgb-clamp-4.html
new file mode 100644
index 0000000000..e7a210f48d
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.rgb-clamp-4.html
@@ -0,0 +1,31 @@
+
+
+Canvas test: 2d.fillStyle.parse.rgb-clamp-4
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        2d.fillStyle.parse.rgb-clamp-4
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        Assumes colors are clamped to [0,255].
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.rgb-clamp-4.png b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.rgb-clamp-4.png
new file mode 100644
index 0000000000..2733836c99
Binary files /dev/null and b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.rgb-clamp-4.png differ
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.rgb-clamp-5.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.rgb-clamp-5.html
new file mode 100644
index 0000000000..1f1e9ef70f
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.rgb-clamp-5.html
@@ -0,0 +1,31 @@
+
+
+Canvas test: 2d.fillStyle.parse.rgb-clamp-5
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          2d.fillStyle.parse.rgb-clamp-5
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          Assumes colors are clamped to [0,255].
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.rgb-clamp-5.png b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.rgb-clamp-5.png
new file mode 100644
index 0000000000..2733836c99
Binary files /dev/null and b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.rgb-clamp-5.png differ
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.rgb-eof.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.rgb-eof.html
new file mode 100644
index 0000000000..b69c779a7a
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.rgb-eof.html
@@ -0,0 +1,31 @@
+
+
+Canvas test: 2d.fillStyle.parse.rgb-eof
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            2d.fillStyle.parse.rgb-eof
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.rgb-eof.png b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.rgb-eof.png
new file mode 100644
index 0000000000..2733836c99
Binary files /dev/null and b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.rgb-eof.png differ
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.rgb-num.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.rgb-num.html
new file mode 100644
index 0000000000..7d9d5eda56
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.rgb-num.html
@@ -0,0 +1,31 @@
+
+
+Canvas test: 2d.fillStyle.parse.rgb-num
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.fillStyle.parse.rgb-num
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.rgb-num.png b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.rgb-num.png
new file mode 100644
index 0000000000..2733836c99
Binary files /dev/null and b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.rgb-num.png differ
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.rgb-percent.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.rgb-percent.html
new file mode 100644
index 0000000000..ea5529c0ee
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.rgb-percent.html
@@ -0,0 +1,31 @@
+
+
+Canvas test: 2d.fillStyle.parse.rgb-percent
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                2d.fillStyle.parse.rgb-percent
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                CSS3 Color says "The integer value 255 corresponds to 100%". (In particular, it is not 254...)
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.rgb-percent.png b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.rgb-percent.png
new file mode 100644
index 0000000000..2733836c99
Binary files /dev/null and b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.rgb-percent.png differ
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.rgba-clamp-1.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.rgba-clamp-1.html
new file mode 100644
index 0000000000..c5816e0660
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.rgba-clamp-1.html
@@ -0,0 +1,31 @@
+
+
+Canvas test: 2d.fillStyle.parse.rgba-clamp-1
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  2d.fillStyle.parse.rgba-clamp-1
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.rgba-clamp-1.png b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.rgba-clamp-1.png
new file mode 100644
index 0000000000..eeedd0ff05
Binary files /dev/null and b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.rgba-clamp-1.png differ
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.rgba-clamp-2.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.rgba-clamp-2.html
new file mode 100644
index 0000000000..69a55cfc9a
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.rgba-clamp-2.html
@@ -0,0 +1,31 @@
+
+
+Canvas test: 2d.fillStyle.parse.rgba-clamp-2
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    2d.fillStyle.parse.rgba-clamp-2
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.rgba-clamp-2.png b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.rgba-clamp-2.png
new file mode 100644
index 0000000000..2733836c99
Binary files /dev/null and b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.rgba-clamp-2.png differ
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.rgba-eof.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.rgba-eof.html
new file mode 100644
index 0000000000..12c296dcfb
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.rgba-eof.html
@@ -0,0 +1,31 @@
+
+
+Canvas test: 2d.fillStyle.parse.rgba-eof
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      2d.fillStyle.parse.rgba-eof
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.rgba-eof.png b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.rgba-eof.png
new file mode 100644
index 0000000000..2733836c99
Binary files /dev/null and b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.rgba-eof.png differ
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.rgba-num-1.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.rgba-num-1.html
new file mode 100644
index 0000000000..41968883df
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.rgba-num-1.html
@@ -0,0 +1,31 @@
+
+
+Canvas test: 2d.fillStyle.parse.rgba-num-1
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        2d.fillStyle.parse.rgba-num-1
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.rgba-num-1.png b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.rgba-num-1.png
new file mode 100644
index 0000000000..2aa6265f06
Binary files /dev/null and b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.rgba-num-1.png differ
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.rgba-num-2.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.rgba-num-2.html
new file mode 100644
index 0000000000..f7fb6185ea
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.rgba-num-2.html
@@ -0,0 +1,31 @@
+
+
+Canvas test: 2d.fillStyle.parse.rgba-num-2
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          2d.fillStyle.parse.rgba-num-2
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.rgba-num-2.png b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.rgba-num-2.png
new file mode 100644
index 0000000000..2aa6265f06
Binary files /dev/null and b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.rgba-num-2.png differ
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.rgba-percent.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.rgba-percent.html
new file mode 100644
index 0000000000..3f1a7305bd
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.rgba-percent.html
@@ -0,0 +1,31 @@
+
+
+Canvas test: 2d.fillStyle.parse.rgba-percent
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            2d.fillStyle.parse.rgba-percent
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.rgba-percent.png b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.rgba-percent.png
new file mode 100644
index 0000000000..2aa6265f06
Binary files /dev/null and b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.rgba-percent.png differ
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.rgba-solid-1.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.rgba-solid-1.html
new file mode 100644
index 0000000000..efa7eb8928
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.rgba-solid-1.html
@@ -0,0 +1,31 @@
+
+
+Canvas test: 2d.fillStyle.parse.rgba-solid-1
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.fillStyle.parse.rgba-solid-1
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.rgba-solid-1.png b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.rgba-solid-1.png
new file mode 100644
index 0000000000..2733836c99
Binary files /dev/null and b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.rgba-solid-1.png differ
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.rgba-solid-2.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.rgba-solid-2.html
new file mode 100644
index 0000000000..eaf917e2c9
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.rgba-solid-2.html
@@ -0,0 +1,31 @@
+
+
+Canvas test: 2d.fillStyle.parse.rgba-solid-2
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                2d.fillStyle.parse.rgba-solid-2
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.rgba-solid-2.png b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.rgba-solid-2.png
new file mode 100644
index 0000000000..2733836c99
Binary files /dev/null and b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.rgba-solid-2.png differ
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.rgba-solid-3.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.rgba-solid-3.html
new file mode 100644
index 0000000000..c525f824a9
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.rgba-solid-3.html
@@ -0,0 +1,31 @@
+
+
+Canvas test: 2d.fillStyle.parse.rgba-solid-3
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  2d.fillStyle.parse.rgba-solid-3
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.rgba-solid-3.png b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.rgba-solid-3.png
new file mode 100644
index 0000000000..2733836c99
Binary files /dev/null and b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.rgba-solid-3.png differ
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.rgba-solid-4.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.rgba-solid-4.html
new file mode 100644
index 0000000000..b7f96741bd
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.rgba-solid-4.html
@@ -0,0 +1,31 @@
+
+
+Canvas test: 2d.fillStyle.parse.rgba-solid-4
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    2d.fillStyle.parse.rgba-solid-4
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.rgba-solid-4.png b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.rgba-solid-4.png
new file mode 100644
index 0000000000..2733836c99
Binary files /dev/null and b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.rgba-solid-4.png differ
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.svg-1.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.svg-1.html
new file mode 100644
index 0000000000..9a9a280c47
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.svg-1.html
@@ -0,0 +1,31 @@
+
+
+Canvas test: 2d.fillStyle.parse.svg-1
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      2d.fillStyle.parse.svg-1
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.svg-1.png b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.svg-1.png
new file mode 100644
index 0000000000..5bc39cc699
Binary files /dev/null and b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.svg-1.png differ
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.svg-2.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.svg-2.html
new file mode 100644
index 0000000000..26c2abec09
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.svg-2.html
@@ -0,0 +1,31 @@
+
+
+Canvas test: 2d.fillStyle.parse.svg-2
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        2d.fillStyle.parse.svg-2
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.svg-2.png b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.svg-2.png
new file mode 100644
index 0000000000..5bc39cc699
Binary files /dev/null and b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.svg-2.png differ
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.system.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.system.html
new file mode 100644
index 0000000000..d6c6195176
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.system.html
@@ -0,0 +1,30 @@
+
+
+Canvas test: 2d.fillStyle.parse.system
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          2d.fillStyle.parse.system
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.transparent-1.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.transparent-1.html
new file mode 100644
index 0000000000..9ab01f0cbb
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.transparent-1.html
@@ -0,0 +1,31 @@
+
+
+Canvas test: 2d.fillStyle.parse.transparent-1
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            2d.fillStyle.parse.transparent-1
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.transparent-1.png b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.transparent-1.png
new file mode 100644
index 0000000000..eeedd0ff05
Binary files /dev/null and b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.transparent-1.png differ
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.transparent-2.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.transparent-2.html
new file mode 100644
index 0000000000..d7730a5504
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.transparent-2.html
@@ -0,0 +1,31 @@
+
+
+Canvas test: 2d.fillStyle.parse.transparent-2
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.fillStyle.parse.transparent-2
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.transparent-2.png b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.transparent-2.png
new file mode 100644
index 0000000000..eeedd0ff05
Binary files /dev/null and b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.parse.transparent-2.png differ
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.toStringFunctionCallback.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.toStringFunctionCallback.html
new file mode 100644
index 0000000000..d420bbfc36
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.fillStyle.toStringFunctionCallback.html
@@ -0,0 +1,40 @@
+
+
+Canvas test: 2d.fillStyle.toStringFunctionCallback
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                2d.fillStyle.toStringFunctionCallback
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                Passing a function in to ctx.fillStyle or ctx.strokeStyle with a toString callback works as specified
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.gradient.conic.invalid.inputs.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.gradient.conic.invalid.inputs.html
new file mode 100644
index 0000000000..ab10f44b2f
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.gradient.conic.invalid.inputs.html
@@ -0,0 +1,45 @@
+
+
+Canvas test: 2d.gradient.conic.invalid.inputs
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  2d.gradient.conic.invalid.inputs
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Conic gradient function with invalid inputs
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.gradient.conic.negative.rotation.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.gradient.conic.negative.rotation.html
new file mode 100644
index 0000000000..f61b614f70
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.gradient.conic.negative.rotation.html
@@ -0,0 +1,36 @@
+
+
+Canvas test: 2d.gradient.conic.negative.rotation
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    2d.gradient.conic.negative.rotation
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    Conic gradient with negative rotation
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.gradient.conic.positive.rotation.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.gradient.conic.positive.rotation.html
new file mode 100644
index 0000000000..ffe9586658
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.gradient.conic.positive.rotation.html
@@ -0,0 +1,36 @@
+
+
+Canvas test: 2d.gradient.conic.positive.rotation
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      2d.gradient.conic.positive.rotation
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      Conic gradient with positive rotation
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.gradient.empty.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.gradient.empty.html
new file mode 100644
index 0000000000..bdf702fb49
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.gradient.empty.html
@@ -0,0 +1,32 @@
+
+
+Canvas test: 2d.gradient.empty
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        2d.gradient.empty
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.gradient.interpolate.alpha.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.gradient.interpolate.alpha.html
new file mode 100644
index 0000000000..e0ed47e03f
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.gradient.interpolate.alpha.html
@@ -0,0 +1,36 @@
+
+
+Canvas test: 2d.gradient.interpolate.alpha
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          2d.gradient.interpolate.alpha
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.gradient.interpolate.alpha.png b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.gradient.interpolate.alpha.png
new file mode 100644
index 0000000000..af5ac0f07d
Binary files /dev/null and b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.gradient.interpolate.alpha.png differ
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.gradient.interpolate.color.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.gradient.interpolate.color.html
new file mode 100644
index 0000000000..e6806d7df1
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.gradient.interpolate.color.html
@@ -0,0 +1,34 @@
+
+
+Canvas test: 2d.gradient.interpolate.color
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            2d.gradient.interpolate.color
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.gradient.interpolate.color.png b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.gradient.interpolate.color.png
new file mode 100644
index 0000000000..af5ac0f07d
Binary files /dev/null and b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.gradient.interpolate.color.png differ
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.gradient.interpolate.coloralpha.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.gradient.interpolate.coloralpha.html
new file mode 100644
index 0000000000..33fee527d4
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.gradient.interpolate.coloralpha.html
@@ -0,0 +1,34 @@
+
+
+Canvas test: 2d.gradient.interpolate.coloralpha
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.gradient.interpolate.coloralpha
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.gradient.interpolate.coloralpha.png b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.gradient.interpolate.coloralpha.png
new file mode 100644
index 0000000000..552e6ee44b
Binary files /dev/null and b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.gradient.interpolate.coloralpha.png differ
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.gradient.interpolate.multiple.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.gradient.interpolate.multiple.html
new file mode 100644
index 0000000000..adfac66d57
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.gradient.interpolate.multiple.html
@@ -0,0 +1,36 @@
+
+
+Canvas test: 2d.gradient.interpolate.multiple
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                2d.gradient.interpolate.multiple
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.gradient.interpolate.multiple.png b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.gradient.interpolate.multiple.png
new file mode 100644
index 0000000000..86122450d3
Binary files /dev/null and b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.gradient.interpolate.multiple.png differ
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.gradient.interpolate.outside.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.gradient.interpolate.outside.html
new file mode 100644
index 0000000000..abad0b5cb0
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.gradient.interpolate.outside.html
@@ -0,0 +1,38 @@
+
+
+Canvas test: 2d.gradient.interpolate.outside
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  2d.gradient.interpolate.outside
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.gradient.interpolate.overlap.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.gradient.interpolate.overlap.html
new file mode 100644
index 0000000000..ecd61728c2
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.gradient.interpolate.overlap.html
@@ -0,0 +1,52 @@
+
+
+Canvas test: 2d.gradient.interpolate.overlap
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    2d.gradient.interpolate.overlap
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.gradient.interpolate.overlap.png b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.gradient.interpolate.overlap.png
new file mode 100644
index 0000000000..5c2bb964e0
Binary files /dev/null and b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.gradient.interpolate.overlap.png differ
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.gradient.interpolate.overlap2.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.gradient.interpolate.overlap2.html
new file mode 100644
index 0000000000..3b54469505
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.gradient.interpolate.overlap2.html
@@ -0,0 +1,42 @@
+
+
+Canvas test: 2d.gradient.interpolate.overlap2
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      2d.gradient.interpolate.overlap2
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.gradient.interpolate.solid.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.gradient.interpolate.solid.html
new file mode 100644
index 0000000000..f6fa97475b
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.gradient.interpolate.solid.html
@@ -0,0 +1,32 @@
+
+
+Canvas test: 2d.gradient.interpolate.solid
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        2d.gradient.interpolate.solid
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.gradient.interpolate.vertical.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.gradient.interpolate.vertical.html
new file mode 100644
index 0000000000..5297996c06
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.gradient.interpolate.vertical.html
@@ -0,0 +1,34 @@
+
+
+Canvas test: 2d.gradient.interpolate.vertical
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          2d.gradient.interpolate.vertical
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.gradient.interpolate.vertical.png b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.gradient.interpolate.vertical.png
new file mode 100644
index 0000000000..37d6a00c62
Binary files /dev/null and b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.gradient.interpolate.vertical.png differ
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.gradient.interpolate.zerosize.fill.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.gradient.interpolate.zerosize.fill.html
new file mode 100644
index 0000000000..8c6b944cff
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.gradient.interpolate.zerosize.fill.html
@@ -0,0 +1,36 @@
+
+
+Canvas test: 2d.gradient.interpolate.zerosize.fill
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            2d.gradient.interpolate.zerosize.fill
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.gradient.interpolate.zerosize.fillRect.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.gradient.interpolate.zerosize.fillRect.html
new file mode 100644
index 0000000000..3a7fe18a34
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.gradient.interpolate.zerosize.fillRect.html
@@ -0,0 +1,35 @@
+
+
+Canvas test: 2d.gradient.interpolate.zerosize.fillRect
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.gradient.interpolate.zerosize.fillRect
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.gradient.interpolate.zerosize.fillText.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.gradient.interpolate.zerosize.fillText.html
new file mode 100644
index 0000000000..619dc843e8
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.gradient.interpolate.zerosize.fillText.html
@@ -0,0 +1,36 @@
+
+
+Canvas test: 2d.gradient.interpolate.zerosize.fillText
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                2d.gradient.interpolate.zerosize.fillText
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.gradient.interpolate.zerosize.stroke.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.gradient.interpolate.zerosize.stroke.html
new file mode 100644
index 0000000000..e5fb648202
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.gradient.interpolate.zerosize.stroke.html
@@ -0,0 +1,44 @@
+
+
+Canvas test: 2d.gradient.interpolate.zerosize.stroke
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  2d.gradient.interpolate.zerosize.stroke
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.gradient.interpolate.zerosize.strokeRect.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.gradient.interpolate.zerosize.strokeRect.html
new file mode 100644
index 0000000000..54f49233b7
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.gradient.interpolate.zerosize.strokeRect.html
@@ -0,0 +1,43 @@
+
+
+Canvas test: 2d.gradient.interpolate.zerosize.strokeRect
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    2d.gradient.interpolate.zerosize.strokeRect
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.gradient.interpolate.zerosize.strokeText.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.gradient.interpolate.zerosize.strokeText.html
new file mode 100644
index 0000000000..df8553d67e
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.gradient.interpolate.zerosize.strokeText.html
@@ -0,0 +1,36 @@
+
+
+Canvas test: 2d.gradient.interpolate.zerosize.strokeText
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      2d.gradient.interpolate.zerosize.strokeText
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.gradient.linear.nonfinite.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.gradient.linear.nonfinite.html
new file mode 100644
index 0000000000..2a7e270b34
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.gradient.linear.nonfinite.html
@@ -0,0 +1,49 @@
+
+
+Canvas test: 2d.gradient.linear.nonfinite
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        2d.gradient.linear.nonfinite
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        createLinearGradient() throws TypeError if arguments are not finite
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        Defined in "Web IDL" (draft)
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.gradient.linear.transform.1.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.gradient.linear.transform.1.html
new file mode 100644
index 0000000000..b2b1f78ffd
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.gradient.linear.transform.1.html
@@ -0,0 +1,37 @@
+
+
+Canvas test: 2d.gradient.linear.transform.1
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          2d.gradient.linear.transform.1
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          Linear gradient coordinates are relative to the coordinate space at the time of filling
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.gradient.linear.transform.2.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.gradient.linear.transform.2.html
new file mode 100644
index 0000000000..49ff026226
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.gradient.linear.transform.2.html
@@ -0,0 +1,38 @@
+
+
+Canvas test: 2d.gradient.linear.transform.2
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            2d.gradient.linear.transform.2
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Linear gradient coordinates are relative to the coordinate space at the time of filling
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.gradient.linear.transform.3.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.gradient.linear.transform.3.html
new file mode 100644
index 0000000000..36f5e46972
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.gradient.linear.transform.3.html
@@ -0,0 +1,38 @@
+
+
+Canvas test: 2d.gradient.linear.transform.3
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.gradient.linear.transform.3
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Linear gradient transforms do not experience broken caching effects
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.gradient.object.compare.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.gradient.object.compare.html
new file mode 100644
index 0000000000..cc20035d28
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.gradient.object.compare.html
@@ -0,0 +1,31 @@
+
+
+Canvas test: 2d.gradient.object.compare
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                2d.gradient.object.compare
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.gradient.object.crosscanvas.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.gradient.object.crosscanvas.html
new file mode 100644
index 0000000000..3b185b4dfe
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.gradient.object.crosscanvas.html
@@ -0,0 +1,34 @@
+
+
+Canvas test: 2d.gradient.object.crosscanvas
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  2d.gradient.object.crosscanvas
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.gradient.object.current.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.gradient.object.current.html
new file mode 100644
index 0000000000..b0d5c01cae
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.gradient.object.current.html
@@ -0,0 +1,37 @@
+
+
+Canvas test: 2d.gradient.object.current
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    2d.gradient.object.current
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.gradient.object.current.png b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.gradient.object.current.png
new file mode 100644
index 0000000000..d638d03386
Binary files /dev/null and b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.gradient.object.current.png differ
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.gradient.object.invalidcolor.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.gradient.object.invalidcolor.html
new file mode 100644
index 0000000000..3150e9c75a
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.gradient.object.invalidcolor.html
@@ -0,0 +1,41 @@
+
+
+Canvas test: 2d.gradient.object.invalidcolor
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      2d.gradient.object.invalidcolor
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.gradient.object.invalidoffset.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.gradient.object.invalidoffset.html
new file mode 100644
index 0000000000..b11a1a5c88
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.gradient.object.invalidoffset.html
@@ -0,0 +1,32 @@
+
+
+Canvas test: 2d.gradient.object.invalidoffset
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        2d.gradient.object.invalidoffset
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.gradient.object.return.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.gradient.object.return.html
new file mode 100644
index 0000000000..80af9caaa5
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.gradient.object.return.html
@@ -0,0 +1,35 @@
+
+
+Canvas test: 2d.gradient.object.return
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          2d.gradient.object.return
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          createLinearGradient() and createRadialGradient() returns objects implementing CanvasGradient
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.gradient.object.type.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.gradient.object.type.html
new file mode 100644
index 0000000000..e79f8d0b2e
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.gradient.object.type.html
@@ -0,0 +1,28 @@
+
+
+Canvas test: 2d.gradient.object.type
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            2d.gradient.object.type
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            window.CanvasGradient exists and has the right properties
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Defined in "Web IDL" (draft)
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.gradient.object.update.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.gradient.object.update.html
new file mode 100644
index 0000000000..6f363177e3
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.gradient.object.update.html
@@ -0,0 +1,35 @@
+
+
+Canvas test: 2d.gradient.object.update
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.gradient.object.update
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.gradient.radial.cone.behind.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.gradient.radial.cone.behind.html
new file mode 100644
index 0000000000..4200a1e7b8
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.gradient.radial.cone.behind.html
@@ -0,0 +1,44 @@
+
+
+Canvas test: 2d.gradient.radial.cone.behind
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                2d.gradient.radial.cone.behind
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.gradient.radial.cone.beside.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.gradient.radial.cone.beside.html
new file mode 100644
index 0000000000..ab183f9030
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.gradient.radial.cone.beside.html
@@ -0,0 +1,44 @@
+
+
+Canvas test: 2d.gradient.radial.cone.beside
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  2d.gradient.radial.cone.beside
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.gradient.radial.cone.bottom.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.gradient.radial.cone.bottom.html
new file mode 100644
index 0000000000..872420b302
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.gradient.radial.cone.bottom.html
@@ -0,0 +1,44 @@
+
+
+Canvas test: 2d.gradient.radial.cone.bottom
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    2d.gradient.radial.cone.bottom
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.gradient.radial.cone.cylinder.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.gradient.radial.cone.cylinder.html
new file mode 100644
index 0000000000..fae7ef86ba
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.gradient.radial.cone.cylinder.html
@@ -0,0 +1,44 @@
+
+
+Canvas test: 2d.gradient.radial.cone.cylinder
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      2d.gradient.radial.cone.cylinder
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.gradient.radial.cone.front.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.gradient.radial.cone.front.html
new file mode 100644
index 0000000000..ff74382496
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.gradient.radial.cone.front.html
@@ -0,0 +1,44 @@
+
+
+Canvas test: 2d.gradient.radial.cone.front
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        2d.gradient.radial.cone.front
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.gradient.radial.cone.shape1.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.gradient.radial.cone.shape1.html
new file mode 100644
index 0000000000..7e95eb25b2
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.gradient.radial.cone.shape1.html
@@ -0,0 +1,53 @@
+
+
+Canvas test: 2d.gradient.radial.cone.shape1
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          2d.gradient.radial.cone.shape1
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.gradient.radial.cone.shape2.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.gradient.radial.cone.shape2.html
new file mode 100644
index 0000000000..7ebe7d26c5
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.gradient.radial.cone.shape2.html
@@ -0,0 +1,53 @@
+
+
+Canvas test: 2d.gradient.radial.cone.shape2
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            2d.gradient.radial.cone.shape2
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.gradient.radial.cone.top.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.gradient.radial.cone.top.html
new file mode 100644
index 0000000000..5db91b7ff6
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.gradient.radial.cone.top.html
@@ -0,0 +1,44 @@
+
+
+Canvas test: 2d.gradient.radial.cone.top
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.gradient.radial.cone.top
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.gradient.radial.equal.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.gradient.radial.equal.html
new file mode 100644
index 0000000000..aeb4990eec
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.gradient.radial.equal.html
@@ -0,0 +1,44 @@
+
+
+Canvas test: 2d.gradient.radial.equal
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                2d.gradient.radial.equal
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.gradient.radial.inside1.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.gradient.radial.inside1.html
new file mode 100644
index 0000000000..102a31bf21
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.gradient.radial.inside1.html
@@ -0,0 +1,44 @@
+
+
+Canvas test: 2d.gradient.radial.inside1
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  2d.gradient.radial.inside1
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.gradient.radial.inside2.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.gradient.radial.inside2.html
new file mode 100644
index 0000000000..5b26ec5ebd
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.gradient.radial.inside2.html
@@ -0,0 +1,44 @@
+
+
+Canvas test: 2d.gradient.radial.inside2
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    2d.gradient.radial.inside2
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.gradient.radial.inside3.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.gradient.radial.inside3.html
new file mode 100644
index 0000000000..30612d458c
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.gradient.radial.inside3.html
@@ -0,0 +1,45 @@
+
+
+Canvas test: 2d.gradient.radial.inside3
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      2d.gradient.radial.inside3
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.gradient.radial.negative.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.gradient.radial.negative.html
new file mode 100644
index 0000000000..ab2ecf2d2d
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.gradient.radial.negative.html
@@ -0,0 +1,29 @@
+
+
+Canvas test: 2d.gradient.radial.negative
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        2d.gradient.radial.negative
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        createRadialGradient() throws INDEX_SIZE_ERR if either radius is negative
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.gradient.radial.nonfinite.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.gradient.radial.nonfinite.html
new file mode 100644
index 0000000000..b60266181a
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.gradient.radial.nonfinite.html
@@ -0,0 +1,101 @@
+
+
+Canvas test: 2d.gradient.radial.nonfinite
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          2d.gradient.radial.nonfinite
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          createRadialGradient() throws TypeError if arguments are not finite
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          Defined in "Web IDL" (draft)
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.gradient.radial.outside1.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.gradient.radial.outside1.html
new file mode 100644
index 0000000000..cb1614455e
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.gradient.radial.outside1.html
@@ -0,0 +1,44 @@
+
+
+Canvas test: 2d.gradient.radial.outside1
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            2d.gradient.radial.outside1
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.gradient.radial.outside2.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.gradient.radial.outside2.html
new file mode 100644
index 0000000000..6853849682
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.gradient.radial.outside2.html
@@ -0,0 +1,44 @@
+
+
+Canvas test: 2d.gradient.radial.outside2
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.gradient.radial.outside2
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.gradient.radial.outside3.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.gradient.radial.outside3.html
new file mode 100644
index 0000000000..9330fcdefa
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.gradient.radial.outside3.html
@@ -0,0 +1,45 @@
+
+
+Canvas test: 2d.gradient.radial.outside3
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                2d.gradient.radial.outside3
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.gradient.radial.touch1.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.gradient.radial.touch1.html
new file mode 100644
index 0000000000..3a13947d3c
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.gradient.radial.touch1.html
@@ -0,0 +1,44 @@
+
+
+Canvas test: 2d.gradient.radial.touch1
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  2d.gradient.radial.touch1
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.gradient.radial.touch2.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.gradient.radial.touch2.html
new file mode 100644
index 0000000000..ca6c1b7e1f
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.gradient.radial.touch2.html
@@ -0,0 +1,46 @@
+
+
+Canvas test: 2d.gradient.radial.touch2
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    2d.gradient.radial.touch2
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.gradient.radial.touch3.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.gradient.radial.touch3.html
new file mode 100644
index 0000000000..bd032a94de
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.gradient.radial.touch3.html
@@ -0,0 +1,44 @@
+
+
+Canvas test: 2d.gradient.radial.touch3
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      2d.gradient.radial.touch3
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.gradient.radial.transform.1.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.gradient.radial.transform.1.html
new file mode 100644
index 0000000000..505dd69829
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.gradient.radial.transform.1.html
@@ -0,0 +1,38 @@
+
+
+Canvas test: 2d.gradient.radial.transform.1
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        2d.gradient.radial.transform.1
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        Radial gradient coordinates are relative to the coordinate space at the time of filling
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.gradient.radial.transform.2.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.gradient.radial.transform.2.html
new file mode 100644
index 0000000000..d8d475fc5a
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.gradient.radial.transform.2.html
@@ -0,0 +1,39 @@
+
+
+Canvas test: 2d.gradient.radial.transform.2
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          2d.gradient.radial.transform.2
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          Radial gradient coordinates are relative to the coordinate space at the time of filling
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.gradient.radial.transform.3.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.gradient.radial.transform.3.html
new file mode 100644
index 0000000000..ff27cb0cc8
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.gradient.radial.transform.3.html
@@ -0,0 +1,39 @@
+
+
+Canvas test: 2d.gradient.radial.transform.3
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            2d.gradient.radial.transform.3
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Radial gradient transforms do not experience broken caching effects
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.pattern.animated.gif.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.pattern.animated.gif.html
new file mode 100644
index 0000000000..9b975228ea
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.pattern.animated.gif.html
@@ -0,0 +1,38 @@
+
+
+Canvas test: 2d.pattern.animated.gif
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.pattern.animated.gif
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              createPattern() of an animated GIF draws the first frame
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.pattern.basic.canvas.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.pattern.basic.canvas.html
new file mode 100644
index 0000000000..f0e50d0df5
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.pattern.basic.canvas.html
@@ -0,0 +1,49 @@
+
+
+Canvas test: 2d.pattern.basic.canvas
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                2d.pattern.basic.canvas
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.pattern.basic.image.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.pattern.basic.image.html
new file mode 100644
index 0000000000..31999965d1
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.pattern.basic.image.html
@@ -0,0 +1,38 @@
+
+
+Canvas test: 2d.pattern.basic.image
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  2d.pattern.basic.image
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.pattern.basic.nocontext.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.pattern.basic.nocontext.html
new file mode 100644
index 0000000000..09e0a0474a
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.pattern.basic.nocontext.html
@@ -0,0 +1,41 @@
+
+
+Canvas test: 2d.pattern.basic.nocontext
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    2d.pattern.basic.nocontext
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.pattern.basic.type.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.pattern.basic.type.html
new file mode 100644
index 0000000000..c07005e201
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.pattern.basic.type.html
@@ -0,0 +1,34 @@
+
+
+Canvas test: 2d.pattern.basic.type
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      2d.pattern.basic.type
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.pattern.basic.zerocanvas.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.pattern.basic.zerocanvas.html
new file mode 100644
index 0000000000..eba1ad50fe
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.pattern.basic.zerocanvas.html
@@ -0,0 +1,43 @@
+
+
+Canvas test: 2d.pattern.basic.zerocanvas
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        2d.pattern.basic.zerocanvas
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.pattern.crosscanvas.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.pattern.crosscanvas.html
new file mode 100644
index 0000000000..cbda7d0a2d
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.pattern.crosscanvas.html
@@ -0,0 +1,36 @@
+
+
+Canvas test: 2d.pattern.crosscanvas
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          2d.pattern.crosscanvas
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.pattern.image.broken.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.pattern.image.broken.html
new file mode 100644
index 0000000000..9f1bb2d036
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.pattern.image.broken.html
@@ -0,0 +1,29 @@
+
+
+Canvas test: 2d.pattern.image.broken
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            2d.pattern.image.broken
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.pattern.image.incomplete.emptysrc.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.pattern.image.incomplete.emptysrc.html
new file mode 100644
index 0000000000..82b86241ed
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.pattern.image.incomplete.emptysrc.html
@@ -0,0 +1,30 @@
+
+
+Canvas test: 2d.pattern.image.incomplete.emptysrc
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.pattern.image.incomplete.emptysrc
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.pattern.image.incomplete.immediate.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.pattern.image.incomplete.immediate.html
new file mode 100644
index 0000000000..91d92feab7
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.pattern.image.incomplete.immediate.html
@@ -0,0 +1,34 @@
+
+
+Canvas test: 2d.pattern.image.incomplete.immediate
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                2d.pattern.image.incomplete.immediate
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.pattern.image.incomplete.nosrc.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.pattern.image.incomplete.nosrc.html
new file mode 100644
index 0000000000..69d039994f
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.pattern.image.incomplete.nosrc.html
@@ -0,0 +1,28 @@
+
+
+Canvas test: 2d.pattern.image.incomplete.nosrc
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  2d.pattern.image.incomplete.nosrc
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.pattern.image.incomplete.reload.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.pattern.image.incomplete.reload.html
new file mode 100644
index 0000000000..0acd089f8e
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.pattern.image.incomplete.reload.html
@@ -0,0 +1,36 @@
+
+
+Canvas test: 2d.pattern.image.incomplete.reload
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    2d.pattern.image.incomplete.reload
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.pattern.image.incomplete.removedsrc.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.pattern.image.incomplete.removedsrc.html
new file mode 100644
index 0000000000..6df23c0c39
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.pattern.image.incomplete.removedsrc.html
@@ -0,0 +1,30 @@
+
+
+Canvas test: 2d.pattern.image.incomplete.removedsrc
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      2d.pattern.image.incomplete.removedsrc
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.pattern.image.nonexistent-but-loading.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.pattern.image.nonexistent-but-loading.html
new file mode 100644
index 0000000000..fe2722fd88
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.pattern.image.nonexistent-but-loading.html
@@ -0,0 +1,32 @@
+
+
+Canvas test: 2d.pattern.image.nonexistent-but-loading
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        2d.pattern.image.nonexistent-but-loading
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.pattern.image.nonexistent.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.pattern.image.nonexistent.html
new file mode 100644
index 0000000000..71a31e3626
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.pattern.image.nonexistent.html
@@ -0,0 +1,29 @@
+
+
+Canvas test: 2d.pattern.image.nonexistent
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          2d.pattern.image.nonexistent
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.pattern.image.nosrc.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.pattern.image.nosrc.html
new file mode 100644
index 0000000000..b1bcad566d
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.pattern.image.nosrc.html
@@ -0,0 +1,30 @@
+
+
+Canvas test: 2d.pattern.image.nosrc
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            2d.pattern.image.nosrc
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.pattern.image.null.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.pattern.image.null.html
new file mode 100644
index 0000000000..0a9407ba55
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.pattern.image.null.html
@@ -0,0 +1,27 @@
+
+
+Canvas test: 2d.pattern.image.null
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.pattern.image.null
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Defined in "Web IDL" (draft)
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.pattern.image.string.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.pattern.image.string.html
new file mode 100644
index 0000000000..c612982e9c
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.pattern.image.string.html
@@ -0,0 +1,27 @@
+
+
+Canvas test: 2d.pattern.image.string
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                2d.pattern.image.string
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                Defined in "Web IDL" (draft)
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.pattern.image.undefined.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.pattern.image.undefined.html
new file mode 100644
index 0000000000..27fea1849a
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.pattern.image.undefined.html
@@ -0,0 +1,27 @@
+
+
+Canvas test: 2d.pattern.image.undefined
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  2d.pattern.image.undefined
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Defined in "Web IDL" (draft)
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.pattern.image.zeroheight.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.pattern.image.zeroheight.html
new file mode 100644
index 0000000000..aebf34e957
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.pattern.image.zeroheight.html
@@ -0,0 +1,29 @@
+
+
+Canvas test: 2d.pattern.image.zeroheight
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    2d.pattern.image.zeroheight
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.pattern.image.zerowidth.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.pattern.image.zerowidth.html
new file mode 100644
index 0000000000..0e74363a15
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.pattern.image.zerowidth.html
@@ -0,0 +1,29 @@
+
+
+Canvas test: 2d.pattern.image.zerowidth
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      2d.pattern.image.zerowidth
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.pattern.modify.canvas1.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.pattern.modify.canvas1.html
new file mode 100644
index 0000000000..066b30a9b8
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.pattern.modify.canvas1.html
@@ -0,0 +1,45 @@
+
+
+Canvas test: 2d.pattern.modify.canvas1
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        2d.pattern.modify.canvas1
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.pattern.modify.canvas2.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.pattern.modify.canvas2.html
new file mode 100644
index 0000000000..10f9c0ab18
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.pattern.modify.canvas2.html
@@ -0,0 +1,49 @@
+
+
+Canvas test: 2d.pattern.modify.canvas2
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          2d.pattern.modify.canvas2
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.pattern.modify.image1.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.pattern.modify.image1.html
new file mode 100644
index 0000000000..5ac850a446
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.pattern.modify.image1.html
@@ -0,0 +1,41 @@
+
+
+Canvas test: 2d.pattern.modify.image1
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            2d.pattern.modify.image1
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.pattern.modify.image2.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.pattern.modify.image2.html
new file mode 100644
index 0000000000..1c95aa0909
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.pattern.modify.image2.html
@@ -0,0 +1,45 @@
+
+
+Canvas test: 2d.pattern.modify.image2
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.pattern.modify.image2
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.pattern.paint.norepeat.basic.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.pattern.paint.norepeat.basic.html
new file mode 100644
index 0000000000..6b0fb8c309
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.pattern.paint.norepeat.basic.html
@@ -0,0 +1,39 @@
+
+
+Canvas test: 2d.pattern.paint.norepeat.basic
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                2d.pattern.paint.norepeat.basic
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.pattern.paint.norepeat.coord1.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.pattern.paint.norepeat.coord1.html
new file mode 100644
index 0000000000..1b1b9bb1b5
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.pattern.paint.norepeat.coord1.html
@@ -0,0 +1,42 @@
+
+
+Canvas test: 2d.pattern.paint.norepeat.coord1
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  2d.pattern.paint.norepeat.coord1
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.pattern.paint.norepeat.coord2.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.pattern.paint.norepeat.coord2.html
new file mode 100644
index 0000000000..c483e4f64e
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.pattern.paint.norepeat.coord2.html
@@ -0,0 +1,43 @@
+
+
+Canvas test: 2d.pattern.paint.norepeat.coord2
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    2d.pattern.paint.norepeat.coord2
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.pattern.paint.norepeat.coord3.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.pattern.paint.norepeat.coord3.html
new file mode 100644
index 0000000000..733f728ad6
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.pattern.paint.norepeat.coord3.html
@@ -0,0 +1,43 @@
+
+
+Canvas test: 2d.pattern.paint.norepeat.coord3
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      2d.pattern.paint.norepeat.coord3
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.pattern.paint.norepeat.outside.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.pattern.paint.norepeat.outside.html
new file mode 100644
index 0000000000..a7279943d4
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.pattern.paint.norepeat.outside.html
@@ -0,0 +1,45 @@
+
+
+Canvas test: 2d.pattern.paint.norepeat.outside
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        2d.pattern.paint.norepeat.outside
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.pattern.paint.orientation.canvas.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.pattern.paint.orientation.canvas.html
new file mode 100644
index 0000000000..b45c95be1f
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.pattern.paint.orientation.canvas.html
@@ -0,0 +1,48 @@
+
+
+Canvas test: 2d.pattern.paint.orientation.canvas
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          2d.pattern.paint.orientation.canvas
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          Canvas patterns do not get flipped when painted
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.pattern.paint.orientation.image.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.pattern.paint.orientation.image.html
new file mode 100644
index 0000000000..a618223b06
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.pattern.paint.orientation.image.html
@@ -0,0 +1,45 @@
+
+
+Canvas test: 2d.pattern.paint.orientation.image
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            2d.pattern.paint.orientation.image
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Image patterns do not get flipped when painted
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.pattern.paint.repeat.basic.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.pattern.paint.repeat.basic.html
new file mode 100644
index 0000000000..238f155b2a
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.pattern.paint.repeat.basic.html
@@ -0,0 +1,39 @@
+
+
+Canvas test: 2d.pattern.paint.repeat.basic
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.pattern.paint.repeat.basic
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.pattern.paint.repeat.coord1.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.pattern.paint.repeat.coord1.html
new file mode 100644
index 0000000000..cfc270d379
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.pattern.paint.repeat.coord1.html
@@ -0,0 +1,40 @@
+
+
+Canvas test: 2d.pattern.paint.repeat.coord1
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                2d.pattern.paint.repeat.coord1
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.pattern.paint.repeat.coord2.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.pattern.paint.repeat.coord2.html
new file mode 100644
index 0000000000..b05feec937
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.pattern.paint.repeat.coord2.html
@@ -0,0 +1,36 @@
+
+
+Canvas test: 2d.pattern.paint.repeat.coord2
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  2d.pattern.paint.repeat.coord2
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.pattern.paint.repeat.coord3.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.pattern.paint.repeat.coord3.html
new file mode 100644
index 0000000000..223d8c0215
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.pattern.paint.repeat.coord3.html
@@ -0,0 +1,39 @@
+
+
+Canvas test: 2d.pattern.paint.repeat.coord3
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    2d.pattern.paint.repeat.coord3
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.pattern.paint.repeat.outside.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.pattern.paint.repeat.outside.html
new file mode 100644
index 0000000000..ca140400d8
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.pattern.paint.repeat.outside.html
@@ -0,0 +1,40 @@
+
+
+Canvas test: 2d.pattern.paint.repeat.outside
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      2d.pattern.paint.repeat.outside
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.pattern.paint.repeatx.basic.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.pattern.paint.repeatx.basic.html
new file mode 100644
index 0000000000..9f2f871c0b
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.pattern.paint.repeatx.basic.html
@@ -0,0 +1,41 @@
+
+
+Canvas test: 2d.pattern.paint.repeatx.basic
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        2d.pattern.paint.repeatx.basic
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.pattern.paint.repeatx.coord1.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.pattern.paint.repeatx.coord1.html
new file mode 100644
index 0000000000..38ad51b237
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.pattern.paint.repeatx.coord1.html
@@ -0,0 +1,45 @@
+
+
+Canvas test: 2d.pattern.paint.repeatx.coord1
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          2d.pattern.paint.repeatx.coord1
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.pattern.paint.repeatx.outside.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.pattern.paint.repeatx.outside.html
new file mode 100644
index 0000000000..ba01bf3092
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.pattern.paint.repeatx.outside.html
@@ -0,0 +1,42 @@
+
+
+Canvas test: 2d.pattern.paint.repeatx.outside
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            2d.pattern.paint.repeatx.outside
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.pattern.paint.repeaty.basic.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.pattern.paint.repeaty.basic.html
new file mode 100644
index 0000000000..bb07aca80e
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.pattern.paint.repeaty.basic.html
@@ -0,0 +1,41 @@
+
+
+Canvas test: 2d.pattern.paint.repeaty.basic
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.pattern.paint.repeaty.basic
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.pattern.paint.repeaty.coord1.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.pattern.paint.repeaty.coord1.html
new file mode 100644
index 0000000000..c7ec99e720
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.pattern.paint.repeaty.coord1.html
@@ -0,0 +1,45 @@
+
+
+Canvas test: 2d.pattern.paint.repeaty.coord1
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                2d.pattern.paint.repeaty.coord1
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.pattern.paint.repeaty.outside.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.pattern.paint.repeaty.outside.html
new file mode 100644
index 0000000000..a3267d9701
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.pattern.paint.repeaty.outside.html
@@ -0,0 +1,42 @@
+
+
+Canvas test: 2d.pattern.paint.repeaty.outside
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  2d.pattern.paint.repeaty.outside
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.pattern.repeat.case.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.pattern.repeat.case.html
new file mode 100644
index 0000000000..ccbef07f65
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.pattern.repeat.case.html
@@ -0,0 +1,27 @@
+
+
+Canvas test: 2d.pattern.repeat.case
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    2d.pattern.repeat.case
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.pattern.repeat.empty.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.pattern.repeat.empty.html
new file mode 100644
index 0000000000..48db7da219
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.pattern.repeat.empty.html
@@ -0,0 +1,38 @@
+
+
+Canvas test: 2d.pattern.repeat.empty
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      2d.pattern.repeat.empty
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.pattern.repeat.null.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.pattern.repeat.null.html
new file mode 100644
index 0000000000..7a4b264d2a
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.pattern.repeat.null.html
@@ -0,0 +1,27 @@
+
+
+Canvas test: 2d.pattern.repeat.null
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        2d.pattern.repeat.null
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.pattern.repeat.nullsuffix.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.pattern.repeat.nullsuffix.html
new file mode 100644
index 0000000000..b28bf57036
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.pattern.repeat.nullsuffix.html
@@ -0,0 +1,27 @@
+
+
+Canvas test: 2d.pattern.repeat.nullsuffix
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          2d.pattern.repeat.nullsuffix
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.pattern.repeat.undefined.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.pattern.repeat.undefined.html
new file mode 100644
index 0000000000..ba40af07b8
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.pattern.repeat.undefined.html
@@ -0,0 +1,27 @@
+
+
+Canvas test: 2d.pattern.repeat.undefined
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            2d.pattern.repeat.undefined
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.pattern.repeat.unrecognised.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.pattern.repeat.unrecognised.html
new file mode 100644
index 0000000000..5c26a41845
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.pattern.repeat.unrecognised.html
@@ -0,0 +1,27 @@
+
+
+Canvas test: 2d.pattern.repeat.unrecognised
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.pattern.repeat.unrecognised
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.pattern.repeat.unrecognisednull.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.pattern.repeat.unrecognisednull.html
new file mode 100644
index 0000000000..f9b47f5be6
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.pattern.repeat.unrecognisednull.html
@@ -0,0 +1,27 @@
+
+
+Canvas test: 2d.pattern.repeat.unrecognisednull
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                2d.pattern.repeat.unrecognisednull
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.pattern.svgimage.nonexistent.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.pattern.svgimage.nonexistent.html
new file mode 100644
index 0000000000..1f25bbc82a
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.pattern.svgimage.nonexistent.html
@@ -0,0 +1,29 @@
+
+
+Canvas test: 2d.pattern.svgimage.nonexistent
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  2d.pattern.svgimage.nonexistent
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.pattern.svgimage.zeroheight.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.pattern.svgimage.zeroheight.html
new file mode 100644
index 0000000000..b18611353e
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.pattern.svgimage.zeroheight.html
@@ -0,0 +1,29 @@
+
+
+Canvas test: 2d.pattern.svgimage.zeroheight
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    2d.pattern.svgimage.zeroheight
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.pattern.svgimage.zerowidth.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.pattern.svgimage.zerowidth.html
new file mode 100644
index 0000000000..2f93d7c342
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.pattern.svgimage.zerowidth.html
@@ -0,0 +1,29 @@
+
+
+Canvas test: 2d.pattern.svgimage.zerowidth
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      2d.pattern.svgimage.zerowidth
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.pattern.transform.identity.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.pattern.transform.identity.html
new file mode 100644
index 0000000000..775d360e1c
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.pattern.transform.identity.html
@@ -0,0 +1,42 @@
+
+
+Canvas test: 2d.pattern.transform.identity
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        2d.pattern.transform.identity
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.pattern.transform.infinity.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.pattern.transform.infinity.html
new file mode 100644
index 0000000000..8650ed9a1d
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.pattern.transform.infinity.html
@@ -0,0 +1,42 @@
+
+
+Canvas test: 2d.pattern.transform.infinity
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          2d.pattern.transform.infinity
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.pattern.transform.invalid.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.pattern.transform.invalid.html
new file mode 100644
index 0000000000..ebd2801241
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.pattern.transform.invalid.html
@@ -0,0 +1,31 @@
+
+
+Canvas test: 2d.pattern.transform.invalid
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            2d.pattern.transform.invalid
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.strokeStyle.colorObject.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.strokeStyle.colorObject.html
new file mode 100644
index 0000000000..308e6b54b7
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.strokeStyle.colorObject.html
@@ -0,0 +1,44 @@
+
+
+Canvas test: 2d.strokeStyle.colorObject
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.strokeStyle.colorObject
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              ctx.strokeStyle works with color objects
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.strokeStyle.colorObject.transparency.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.strokeStyle.colorObject.transparency.html
new file mode 100644
index 0000000000..0232140eaf
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.strokeStyle.colorObject.transparency.html
@@ -0,0 +1,40 @@
+
+
+Canvas test: 2d.strokeStyle.colorObject.transparency
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                2d.strokeStyle.colorObject.transparency
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                ctx.strokeStyle with color objects has transparency
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.strokeStyle.default.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.strokeStyle.default.html
new file mode 100644
index 0000000000..91542e2892
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.strokeStyle.default.html
@@ -0,0 +1,27 @@
+
+
+Canvas test: 2d.strokeStyle.default
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  2d.strokeStyle.default
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/filters/2d.filter.canvasFilterObject.blur.exceptions.tentative.html b/testing/web-platform/tests/html/canvas/element/filters/2d.filter.canvasFilterObject.blur.exceptions.tentative.html
new file mode 100644
index 0000000000..2abd7cdee7
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/filters/2d.filter.canvasFilterObject.blur.exceptions.tentative.html
@@ -0,0 +1,31 @@
+
+
+Canvas test: 2d.filter.canvasFilterObject.blur.exceptions.tentative
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    2d.filter.canvasFilterObject.blur.exceptions.tentative
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    Test exceptions on CanvasFilter() blur.object
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/filters/2d.filter.canvasFilterObject.colorMatrix.tentative.html b/testing/web-platform/tests/html/canvas/element/filters/2d.filter.canvasFilterObject.colorMatrix.tentative.html
new file mode 100644
index 0000000000..61c0f37591
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/filters/2d.filter.canvasFilterObject.colorMatrix.tentative.html
@@ -0,0 +1,68 @@
+
+
+Canvas test: 2d.filter.canvasFilterObject.colorMatrix.tentative
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      2d.filter.canvasFilterObject.colorMatrix.tentative
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      Test the functionality of ColorMatrix filters in CanvasFilter objects
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/filters/2d.filter.canvasFilterObject.componentTransfer.discrete.tentative.html b/testing/web-platform/tests/html/canvas/element/filters/2d.filter.canvasFilterObject.componentTransfer.discrete.tentative.html
new file mode 100644
index 0000000000..0512cac1c9
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/filters/2d.filter.canvasFilterObject.componentTransfer.discrete.tentative.html
@@ -0,0 +1,66 @@
+
+
+Canvas test: 2d.filter.canvasFilterObject.componentTransfer.discrete.tentative
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        2d.filter.canvasFilterObject.componentTransfer.discrete.tentative
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        Test pixels on CanvasFilter() componentTransfer with discrete type
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/filters/2d.filter.canvasFilterObject.componentTransfer.gamma.tentative.html b/testing/web-platform/tests/html/canvas/element/filters/2d.filter.canvasFilterObject.componentTransfer.gamma.tentative.html
new file mode 100644
index 0000000000..c6feb50a35
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/filters/2d.filter.canvasFilterObject.componentTransfer.gamma.tentative.html
@@ -0,0 +1,57 @@
+
+
+Canvas test: 2d.filter.canvasFilterObject.componentTransfer.gamma.tentative
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          2d.filter.canvasFilterObject.componentTransfer.gamma.tentative
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          Test pixels on CanvasFilter() componentTransfer with gamma type
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/filters/2d.filter.canvasFilterObject.componentTransfer.identity.tentative.html b/testing/web-platform/tests/html/canvas/element/filters/2d.filter.canvasFilterObject.componentTransfer.identity.tentative.html
new file mode 100644
index 0000000000..bb7dc41c3d
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/filters/2d.filter.canvasFilterObject.componentTransfer.identity.tentative.html
@@ -0,0 +1,44 @@
+
+
+Canvas test: 2d.filter.canvasFilterObject.componentTransfer.identity.tentative
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            2d.filter.canvasFilterObject.componentTransfer.identity.tentative
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Test pixels on CanvasFilter() componentTransfer with identity type
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/filters/2d.filter.canvasFilterObject.componentTransfer.linear.tentative.html b/testing/web-platform/tests/html/canvas/element/filters/2d.filter.canvasFilterObject.componentTransfer.linear.tentative.html
new file mode 100644
index 0000000000..ee4a053961
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/filters/2d.filter.canvasFilterObject.componentTransfer.linear.tentative.html
@@ -0,0 +1,56 @@
+
+
+Canvas test: 2d.filter.canvasFilterObject.componentTransfer.linear.tentative
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.filter.canvasFilterObject.componentTransfer.linear.tentative
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Test pixels on CanvasFilter() componentTransfer with linear type
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/filters/2d.filter.canvasFilterObject.componentTransfer.table.tentative.html b/testing/web-platform/tests/html/canvas/element/filters/2d.filter.canvasFilterObject.componentTransfer.table.tentative.html
new file mode 100644
index 0000000000..510d130424
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/filters/2d.filter.canvasFilterObject.componentTransfer.table.tentative.html
@@ -0,0 +1,66 @@
+
+
+Canvas test: 2d.filter.canvasFilterObject.componentTransfer.table.tentative
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                2d.filter.canvasFilterObject.componentTransfer.table.tentative
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                Test pixels on CanvasFilter() componentTransfer with table type
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/filters/2d.filter.canvasFilterObject.convolveMatrix.exceptions.tentative.html b/testing/web-platform/tests/html/canvas/element/filters/2d.filter.canvasFilterObject.convolveMatrix.exceptions.tentative.html
new file mode 100644
index 0000000000..4f4a9c17bd
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/filters/2d.filter.canvasFilterObject.convolveMatrix.exceptions.tentative.html
@@ -0,0 +1,42 @@
+
+
+Canvas test: 2d.filter.canvasFilterObject.convolveMatrix.exceptions.tentative
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  2d.filter.canvasFilterObject.convolveMatrix.exceptions.tentative
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Test exceptions on CanvasFilter() convolveMatrix
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/filters/2d.filter.canvasFilterObject.dropShadow.exceptions.tentative.html b/testing/web-platform/tests/html/canvas/element/filters/2d.filter.canvasFilterObject.dropShadow.exceptions.tentative.html
new file mode 100644
index 0000000000..2a14e30bb7
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/filters/2d.filter.canvasFilterObject.dropShadow.exceptions.tentative.html
@@ -0,0 +1,123 @@
+
+
+Canvas test: 2d.filter.canvasFilterObject.dropShadow.exceptions.tentative
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    2d.filter.canvasFilterObject.dropShadow.exceptions.tentative
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    Test exceptions on CanvasFilter() dropShadow object
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/filters/2d.filter.canvasFilterObject.dropShadow.tentative-expected.html b/testing/web-platform/tests/html/canvas/element/filters/2d.filter.canvasFilterObject.dropShadow.tentative-expected.html
new file mode 100644
index 0000000000..86c5710132
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/filters/2d.filter.canvasFilterObject.dropShadow.tentative-expected.html
@@ -0,0 +1,57 @@
+
+
+Canvas test: 2d.filter.canvasFilterObject.dropShadow.tentative
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      2d.filter.canvasFilterObject.dropShadow.tentative
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      Test CanvasFilter() dropShadow object.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
+
+  
+  
+  
+  
+
+  
+  
+
+  
+  
+  
+  
+  
+
+  
+  
+  
+  
+    
+  
+  
+  
+
+  
+  
+    
+  
+  
+  
+
diff --git a/testing/web-platform/tests/html/canvas/element/filters/2d.filter.canvasFilterObject.dropShadow.tentative.html b/testing/web-platform/tests/html/canvas/element/filters/2d.filter.canvasFilterObject.dropShadow.tentative.html
new file mode 100644
index 0000000000..09eb09473d
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/filters/2d.filter.canvasFilterObject.dropShadow.tentative.html
@@ -0,0 +1,107 @@
+
+
+
+Canvas test: 2d.filter.canvasFilterObject.dropShadow.tentative
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      2d.filter.canvasFilterObject.dropShadow.tentative
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      Test CanvasFilter() dropShadow object.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
diff --git a/testing/web-platform/tests/html/canvas/element/filters/2d.filter.canvasFilterObject.tentative.html b/testing/web-platform/tests/html/canvas/element/filters/2d.filter.canvasFilterObject.tentative.html
new file mode 100644
index 0000000000..059a71025d
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/filters/2d.filter.canvasFilterObject.tentative.html
@@ -0,0 +1,46 @@
+
+
+Canvas test: 2d.filter.canvasFilterObject.tentative
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      2d.filter.canvasFilterObject.tentative
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      Test CanvasFilter() object
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/filters/2d.filter.canvasFilterObject.turbulence.inputTypes.tentative.html b/testing/web-platform/tests/html/canvas/element/filters/2d.filter.canvasFilterObject.turbulence.inputTypes.tentative.html
new file mode 100644
index 0000000000..7ab62e368d
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/filters/2d.filter.canvasFilterObject.turbulence.inputTypes.tentative.html
@@ -0,0 +1,129 @@
+
+
+Canvas test: 2d.filter.canvasFilterObject.turbulence.inputTypes.tentative
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        2d.filter.canvasFilterObject.turbulence.inputTypes.tentative
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        Test exceptions on CanvasFilter() turbulence object
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/filters/2d.filter.value.html b/testing/web-platform/tests/html/canvas/element/filters/2d.filter.value.html
new file mode 100644
index 0000000000..5716b9bd16
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/filters/2d.filter.value.html
@@ -0,0 +1,55 @@
+
+
+Canvas test: 2d.filter.value
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          2d.filter.value
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          test if ctx.filter works correctly
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/layers/2d.layer.endlayer.alone-expected.html b/testing/web-platform/tests/html/canvas/element/layers/2d.layer.endlayer.alone-expected.html
new file mode 100644
index 0000000000..607526e437
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/layers/2d.layer.endlayer.alone-expected.html
@@ -0,0 +1,21 @@
+
+
+Canvas test: 2d.layer.endlayer.alone
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            2d.layer.endlayer.alone
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            A test to make sure a single endLayer with no beginLayer is a no-op.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
diff --git a/testing/web-platform/tests/html/canvas/element/layers/2d.layer.endlayer.alone.html b/testing/web-platform/tests/html/canvas/element/layers/2d.layer.endlayer.alone.html
new file mode 100644
index 0000000000..a7a5933b33
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/layers/2d.layer.endlayer.alone.html
@@ -0,0 +1,24 @@
+
+
+
+Canvas test: 2d.layer.endlayer.alone
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            2d.layer.endlayer.alone
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            A test to make sure a single endLayer with no beginLayer is a no-op.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
diff --git a/testing/web-platform/tests/html/canvas/element/layers/2d.layer.endlayer.unmatched-expected.html b/testing/web-platform/tests/html/canvas/element/layers/2d.layer.endlayer.unmatched-expected.html
new file mode 100644
index 0000000000..e6dd85b7e2
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/layers/2d.layer.endlayer.unmatched-expected.html
@@ -0,0 +1,24 @@
+
+
+Canvas test: 2d.layer.endlayer.unmatched
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            2d.layer.endlayer.unmatched
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            A test to make sure an unmatched endLayer is a no-op and has no effect on the code following it.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
diff --git a/testing/web-platform/tests/html/canvas/element/layers/2d.layer.endlayer.unmatched.html b/testing/web-platform/tests/html/canvas/element/layers/2d.layer.endlayer.unmatched.html
new file mode 100644
index 0000000000..5f53983232
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/layers/2d.layer.endlayer.unmatched.html
@@ -0,0 +1,28 @@
+
+
+
+Canvas test: 2d.layer.endlayer.unmatched
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            2d.layer.endlayer.unmatched
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            A test to make sure an unmatched endLayer is a no-op and has no effect on the code following it.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
diff --git a/testing/web-platform/tests/html/canvas/element/layers/2d.layer.global-states.alpha-expected.html b/testing/web-platform/tests/html/canvas/element/layers/2d.layer.global-states.alpha-expected.html
new file mode 100644
index 0000000000..0666e3098a
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/layers/2d.layer.global-states.alpha-expected.html
@@ -0,0 +1,31 @@
+
+
+Canvas test: 2d.layer.global-states.alpha
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            2d.layer.global-states.alpha
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Checks that layers correctly use global render states.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
diff --git a/testing/web-platform/tests/html/canvas/element/layers/2d.layer.global-states.alpha.blending-expected.html b/testing/web-platform/tests/html/canvas/element/layers/2d.layer.global-states.alpha.blending-expected.html
new file mode 100644
index 0000000000..8a45027588
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/layers/2d.layer.global-states.alpha.blending-expected.html
@@ -0,0 +1,32 @@
+
+
+Canvas test: 2d.layer.global-states.alpha.blending
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            2d.layer.global-states.alpha.blending
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Checks that layers correctly use global render states.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
diff --git a/testing/web-platform/tests/html/canvas/element/layers/2d.layer.global-states.alpha.blending.html b/testing/web-platform/tests/html/canvas/element/layers/2d.layer.global-states.alpha.blending.html
new file mode 100644
index 0000000000..8e15a2b936
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/layers/2d.layer.global-states.alpha.blending.html
@@ -0,0 +1,35 @@
+
+
+
+Canvas test: 2d.layer.global-states.alpha.blending
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            2d.layer.global-states.alpha.blending
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Checks that layers correctly use global render states.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
diff --git a/testing/web-platform/tests/html/canvas/element/layers/2d.layer.global-states.alpha.blending.shadow-expected.html b/testing/web-platform/tests/html/canvas/element/layers/2d.layer.global-states.alpha.blending.shadow-expected.html
new file mode 100644
index 0000000000..d7ba158d16
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/layers/2d.layer.global-states.alpha.blending.shadow-expected.html
@@ -0,0 +1,35 @@
+
+
+Canvas test: 2d.layer.global-states.alpha.blending.shadow
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            2d.layer.global-states.alpha.blending.shadow
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Checks that layers correctly use global render states.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
diff --git a/testing/web-platform/tests/html/canvas/element/layers/2d.layer.global-states.alpha.blending.shadow.html b/testing/web-platform/tests/html/canvas/element/layers/2d.layer.global-states.alpha.blending.shadow.html
new file mode 100644
index 0000000000..22946174cd
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/layers/2d.layer.global-states.alpha.blending.shadow.html
@@ -0,0 +1,38 @@
+
+
+
+Canvas test: 2d.layer.global-states.alpha.blending.shadow
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            2d.layer.global-states.alpha.blending.shadow
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Checks that layers correctly use global render states.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
diff --git a/testing/web-platform/tests/html/canvas/element/layers/2d.layer.global-states.alpha.composite-expected.html b/testing/web-platform/tests/html/canvas/element/layers/2d.layer.global-states.alpha.composite-expected.html
new file mode 100644
index 0000000000..951049e638
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/layers/2d.layer.global-states.alpha.composite-expected.html
@@ -0,0 +1,32 @@
+
+
+Canvas test: 2d.layer.global-states.alpha.composite
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            2d.layer.global-states.alpha.composite
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Checks that layers correctly use global render states.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
diff --git a/testing/web-platform/tests/html/canvas/element/layers/2d.layer.global-states.alpha.composite.html b/testing/web-platform/tests/html/canvas/element/layers/2d.layer.global-states.alpha.composite.html
new file mode 100644
index 0000000000..1ac6a2cbfe
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/layers/2d.layer.global-states.alpha.composite.html
@@ -0,0 +1,35 @@
+
+
+
+Canvas test: 2d.layer.global-states.alpha.composite
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            2d.layer.global-states.alpha.composite
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Checks that layers correctly use global render states.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
diff --git a/testing/web-platform/tests/html/canvas/element/layers/2d.layer.global-states.alpha.composite.shadow-expected.html b/testing/web-platform/tests/html/canvas/element/layers/2d.layer.global-states.alpha.composite.shadow-expected.html
new file mode 100644
index 0000000000..a669a2271e
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/layers/2d.layer.global-states.alpha.composite.shadow-expected.html
@@ -0,0 +1,35 @@
+
+
+Canvas test: 2d.layer.global-states.alpha.composite.shadow
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            2d.layer.global-states.alpha.composite.shadow
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Checks that layers correctly use global render states.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
diff --git a/testing/web-platform/tests/html/canvas/element/layers/2d.layer.global-states.alpha.composite.shadow.html b/testing/web-platform/tests/html/canvas/element/layers/2d.layer.global-states.alpha.composite.shadow.html
new file mode 100644
index 0000000000..c07e717a66
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/layers/2d.layer.global-states.alpha.composite.shadow.html
@@ -0,0 +1,38 @@
+
+
+
+Canvas test: 2d.layer.global-states.alpha.composite.shadow
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            2d.layer.global-states.alpha.composite.shadow
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Checks that layers correctly use global render states.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
diff --git a/testing/web-platform/tests/html/canvas/element/layers/2d.layer.global-states.alpha.html b/testing/web-platform/tests/html/canvas/element/layers/2d.layer.global-states.alpha.html
new file mode 100644
index 0000000000..829796acbf
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/layers/2d.layer.global-states.alpha.html
@@ -0,0 +1,34 @@
+
+
+
+Canvas test: 2d.layer.global-states.alpha
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            2d.layer.global-states.alpha
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Checks that layers correctly use global render states.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
diff --git a/testing/web-platform/tests/html/canvas/element/layers/2d.layer.global-states.alpha.shadow-expected.html b/testing/web-platform/tests/html/canvas/element/layers/2d.layer.global-states.alpha.shadow-expected.html
new file mode 100644
index 0000000000..206eb75013
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/layers/2d.layer.global-states.alpha.shadow-expected.html
@@ -0,0 +1,34 @@
+
+
+Canvas test: 2d.layer.global-states.alpha.shadow
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            2d.layer.global-states.alpha.shadow
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Checks that layers correctly use global render states.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
diff --git a/testing/web-platform/tests/html/canvas/element/layers/2d.layer.global-states.alpha.shadow.html b/testing/web-platform/tests/html/canvas/element/layers/2d.layer.global-states.alpha.shadow.html
new file mode 100644
index 0000000000..bcb7fe5096
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/layers/2d.layer.global-states.alpha.shadow.html
@@ -0,0 +1,37 @@
+
+
+
+Canvas test: 2d.layer.global-states.alpha.shadow
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            2d.layer.global-states.alpha.shadow
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Checks that layers correctly use global render states.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
diff --git a/testing/web-platform/tests/html/canvas/element/layers/2d.layer.global-states.blending-expected.html b/testing/web-platform/tests/html/canvas/element/layers/2d.layer.global-states.blending-expected.html
new file mode 100644
index 0000000000..33fdf46a28
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/layers/2d.layer.global-states.blending-expected.html
@@ -0,0 +1,31 @@
+
+
+Canvas test: 2d.layer.global-states.blending
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            2d.layer.global-states.blending
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Checks that layers correctly use global render states.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
diff --git a/testing/web-platform/tests/html/canvas/element/layers/2d.layer.global-states.blending.html b/testing/web-platform/tests/html/canvas/element/layers/2d.layer.global-states.blending.html
new file mode 100644
index 0000000000..7d4d9ae4b5
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/layers/2d.layer.global-states.blending.html
@@ -0,0 +1,34 @@
+
+
+
+Canvas test: 2d.layer.global-states.blending
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            2d.layer.global-states.blending
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Checks that layers correctly use global render states.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
diff --git a/testing/web-platform/tests/html/canvas/element/layers/2d.layer.global-states.blending.shadow-expected.html b/testing/web-platform/tests/html/canvas/element/layers/2d.layer.global-states.blending.shadow-expected.html
new file mode 100644
index 0000000000..02275c8cc2
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/layers/2d.layer.global-states.blending.shadow-expected.html
@@ -0,0 +1,34 @@
+
+
+Canvas test: 2d.layer.global-states.blending.shadow
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            2d.layer.global-states.blending.shadow
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Checks that layers correctly use global render states.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
diff --git a/testing/web-platform/tests/html/canvas/element/layers/2d.layer.global-states.blending.shadow.html b/testing/web-platform/tests/html/canvas/element/layers/2d.layer.global-states.blending.shadow.html
new file mode 100644
index 0000000000..80f414d4ee
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/layers/2d.layer.global-states.blending.shadow.html
@@ -0,0 +1,37 @@
+
+
+
+Canvas test: 2d.layer.global-states.blending.shadow
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            2d.layer.global-states.blending.shadow
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Checks that layers correctly use global render states.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
diff --git a/testing/web-platform/tests/html/canvas/element/layers/2d.layer.global-states.composite-expected.html b/testing/web-platform/tests/html/canvas/element/layers/2d.layer.global-states.composite-expected.html
new file mode 100644
index 0000000000..ed7669c4cf
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/layers/2d.layer.global-states.composite-expected.html
@@ -0,0 +1,31 @@
+
+
+Canvas test: 2d.layer.global-states.composite
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            2d.layer.global-states.composite
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Checks that layers correctly use global render states.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
diff --git a/testing/web-platform/tests/html/canvas/element/layers/2d.layer.global-states.composite.html b/testing/web-platform/tests/html/canvas/element/layers/2d.layer.global-states.composite.html
new file mode 100644
index 0000000000..898d149924
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/layers/2d.layer.global-states.composite.html
@@ -0,0 +1,34 @@
+
+
+
+Canvas test: 2d.layer.global-states.composite
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            2d.layer.global-states.composite
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Checks that layers correctly use global render states.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
diff --git a/testing/web-platform/tests/html/canvas/element/layers/2d.layer.global-states.composite.shadow-expected.html b/testing/web-platform/tests/html/canvas/element/layers/2d.layer.global-states.composite.shadow-expected.html
new file mode 100644
index 0000000000..e380cccab8
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/layers/2d.layer.global-states.composite.shadow-expected.html
@@ -0,0 +1,34 @@
+
+
+Canvas test: 2d.layer.global-states.composite.shadow
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            2d.layer.global-states.composite.shadow
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Checks that layers correctly use global render states.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
diff --git a/testing/web-platform/tests/html/canvas/element/layers/2d.layer.global-states.composite.shadow.html b/testing/web-platform/tests/html/canvas/element/layers/2d.layer.global-states.composite.shadow.html
new file mode 100644
index 0000000000..9e32dddd40
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/layers/2d.layer.global-states.composite.shadow.html
@@ -0,0 +1,37 @@
+
+
+
+Canvas test: 2d.layer.global-states.composite.shadow
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            2d.layer.global-states.composite.shadow
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Checks that layers correctly use global render states.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
diff --git a/testing/web-platform/tests/html/canvas/element/layers/2d.layer.global-states.filter.alpha-expected.html b/testing/web-platform/tests/html/canvas/element/layers/2d.layer.global-states.filter.alpha-expected.html
new file mode 100644
index 0000000000..f304700feb
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/layers/2d.layer.global-states.filter.alpha-expected.html
@@ -0,0 +1,50 @@
+
+
+Canvas test: 2d.layer.global-states.filter.alpha
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            2d.layer.global-states.filter.alpha
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Checks that layers with filters correctly use global render states.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
diff --git a/testing/web-platform/tests/html/canvas/element/layers/2d.layer.global-states.filter.alpha.blending-expected.html b/testing/web-platform/tests/html/canvas/element/layers/2d.layer.global-states.filter.alpha.blending-expected.html
new file mode 100644
index 0000000000..7c91ce4229
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/layers/2d.layer.global-states.filter.alpha.blending-expected.html
@@ -0,0 +1,51 @@
+
+
+Canvas test: 2d.layer.global-states.filter.alpha.blending
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            2d.layer.global-states.filter.alpha.blending
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Checks that layers with filters correctly use global render states.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
diff --git a/testing/web-platform/tests/html/canvas/element/layers/2d.layer.global-states.filter.alpha.blending.html b/testing/web-platform/tests/html/canvas/element/layers/2d.layer.global-states.filter.alpha.blending.html
new file mode 100644
index 0000000000..6f92e6d33f
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/layers/2d.layer.global-states.filter.alpha.blending.html
@@ -0,0 +1,38 @@
+
+
+
+Canvas test: 2d.layer.global-states.filter.alpha.blending
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            2d.layer.global-states.filter.alpha.blending
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Checks that layers with filters correctly use global render states.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
diff --git a/testing/web-platform/tests/html/canvas/element/layers/2d.layer.global-states.filter.alpha.blending.shadow-expected.html b/testing/web-platform/tests/html/canvas/element/layers/2d.layer.global-states.filter.alpha.blending.shadow-expected.html
new file mode 100644
index 0000000000..d9c93719b9
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/layers/2d.layer.global-states.filter.alpha.blending.shadow-expected.html
@@ -0,0 +1,54 @@
+
+
+Canvas test: 2d.layer.global-states.filter.alpha.blending.shadow
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            2d.layer.global-states.filter.alpha.blending.shadow
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Checks that layers with filters correctly use global render states.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
diff --git a/testing/web-platform/tests/html/canvas/element/layers/2d.layer.global-states.filter.alpha.blending.shadow.html b/testing/web-platform/tests/html/canvas/element/layers/2d.layer.global-states.filter.alpha.blending.shadow.html
new file mode 100644
index 0000000000..68bdee684d
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/layers/2d.layer.global-states.filter.alpha.blending.shadow.html
@@ -0,0 +1,41 @@
+
+
+
+Canvas test: 2d.layer.global-states.filter.alpha.blending.shadow
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            2d.layer.global-states.filter.alpha.blending.shadow
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Checks that layers with filters correctly use global render states.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
diff --git a/testing/web-platform/tests/html/canvas/element/layers/2d.layer.global-states.filter.alpha.composite-expected.html b/testing/web-platform/tests/html/canvas/element/layers/2d.layer.global-states.filter.alpha.composite-expected.html
new file mode 100644
index 0000000000..8e0d98648e
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/layers/2d.layer.global-states.filter.alpha.composite-expected.html
@@ -0,0 +1,51 @@
+
+
+Canvas test: 2d.layer.global-states.filter.alpha.composite
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            2d.layer.global-states.filter.alpha.composite
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Checks that layers with filters correctly use global render states.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
diff --git a/testing/web-platform/tests/html/canvas/element/layers/2d.layer.global-states.filter.alpha.composite.html b/testing/web-platform/tests/html/canvas/element/layers/2d.layer.global-states.filter.alpha.composite.html
new file mode 100644
index 0000000000..72282d6559
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/layers/2d.layer.global-states.filter.alpha.composite.html
@@ -0,0 +1,38 @@
+
+
+
+Canvas test: 2d.layer.global-states.filter.alpha.composite
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            2d.layer.global-states.filter.alpha.composite
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Checks that layers with filters correctly use global render states.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
diff --git a/testing/web-platform/tests/html/canvas/element/layers/2d.layer.global-states.filter.alpha.composite.shadow-expected.html b/testing/web-platform/tests/html/canvas/element/layers/2d.layer.global-states.filter.alpha.composite.shadow-expected.html
new file mode 100644
index 0000000000..26d13a4cae
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/layers/2d.layer.global-states.filter.alpha.composite.shadow-expected.html
@@ -0,0 +1,54 @@
+
+
+Canvas test: 2d.layer.global-states.filter.alpha.composite.shadow
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            2d.layer.global-states.filter.alpha.composite.shadow
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Checks that layers with filters correctly use global render states.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
diff --git a/testing/web-platform/tests/html/canvas/element/layers/2d.layer.global-states.filter.alpha.composite.shadow.html b/testing/web-platform/tests/html/canvas/element/layers/2d.layer.global-states.filter.alpha.composite.shadow.html
new file mode 100644
index 0000000000..71c99dba35
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/layers/2d.layer.global-states.filter.alpha.composite.shadow.html
@@ -0,0 +1,41 @@
+
+
+
+Canvas test: 2d.layer.global-states.filter.alpha.composite.shadow
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            2d.layer.global-states.filter.alpha.composite.shadow
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Checks that layers with filters correctly use global render states.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
diff --git a/testing/web-platform/tests/html/canvas/element/layers/2d.layer.global-states.filter.alpha.html b/testing/web-platform/tests/html/canvas/element/layers/2d.layer.global-states.filter.alpha.html
new file mode 100644
index 0000000000..9e687bcaf8
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/layers/2d.layer.global-states.filter.alpha.html
@@ -0,0 +1,37 @@
+
+
+
+Canvas test: 2d.layer.global-states.filter.alpha
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            2d.layer.global-states.filter.alpha
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Checks that layers with filters correctly use global render states.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
diff --git a/testing/web-platform/tests/html/canvas/element/layers/2d.layer.global-states.filter.alpha.shadow-expected.html b/testing/web-platform/tests/html/canvas/element/layers/2d.layer.global-states.filter.alpha.shadow-expected.html
new file mode 100644
index 0000000000..9cc735fd42
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/layers/2d.layer.global-states.filter.alpha.shadow-expected.html
@@ -0,0 +1,53 @@
+
+
+Canvas test: 2d.layer.global-states.filter.alpha.shadow
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            2d.layer.global-states.filter.alpha.shadow
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Checks that layers with filters correctly use global render states.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
diff --git a/testing/web-platform/tests/html/canvas/element/layers/2d.layer.global-states.filter.alpha.shadow.html b/testing/web-platform/tests/html/canvas/element/layers/2d.layer.global-states.filter.alpha.shadow.html
new file mode 100644
index 0000000000..a9564c44a7
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/layers/2d.layer.global-states.filter.alpha.shadow.html
@@ -0,0 +1,40 @@
+
+
+
+Canvas test: 2d.layer.global-states.filter.alpha.shadow
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            2d.layer.global-states.filter.alpha.shadow
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Checks that layers with filters correctly use global render states.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
diff --git a/testing/web-platform/tests/html/canvas/element/layers/2d.layer.global-states.filter.blending-expected.html b/testing/web-platform/tests/html/canvas/element/layers/2d.layer.global-states.filter.blending-expected.html
new file mode 100644
index 0000000000..f81dcf72dc
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/layers/2d.layer.global-states.filter.blending-expected.html
@@ -0,0 +1,50 @@
+
+
+Canvas test: 2d.layer.global-states.filter.blending
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            2d.layer.global-states.filter.blending
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Checks that layers with filters correctly use global render states.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
diff --git a/testing/web-platform/tests/html/canvas/element/layers/2d.layer.global-states.filter.blending.html b/testing/web-platform/tests/html/canvas/element/layers/2d.layer.global-states.filter.blending.html
new file mode 100644
index 0000000000..a812563398
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/layers/2d.layer.global-states.filter.blending.html
@@ -0,0 +1,37 @@
+
+
+
+Canvas test: 2d.layer.global-states.filter.blending
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            2d.layer.global-states.filter.blending
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Checks that layers with filters correctly use global render states.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
diff --git a/testing/web-platform/tests/html/canvas/element/layers/2d.layer.global-states.filter.blending.shadow-expected.html b/testing/web-platform/tests/html/canvas/element/layers/2d.layer.global-states.filter.blending.shadow-expected.html
new file mode 100644
index 0000000000..a48485f7e8
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/layers/2d.layer.global-states.filter.blending.shadow-expected.html
@@ -0,0 +1,53 @@
+
+
+Canvas test: 2d.layer.global-states.filter.blending.shadow
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            2d.layer.global-states.filter.blending.shadow
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Checks that layers with filters correctly use global render states.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
diff --git a/testing/web-platform/tests/html/canvas/element/layers/2d.layer.global-states.filter.blending.shadow.html b/testing/web-platform/tests/html/canvas/element/layers/2d.layer.global-states.filter.blending.shadow.html
new file mode 100644
index 0000000000..bf30126ff2
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/layers/2d.layer.global-states.filter.blending.shadow.html
@@ -0,0 +1,40 @@
+
+
+
+Canvas test: 2d.layer.global-states.filter.blending.shadow
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            2d.layer.global-states.filter.blending.shadow
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Checks that layers with filters correctly use global render states.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
diff --git a/testing/web-platform/tests/html/canvas/element/layers/2d.layer.global-states.filter.composite-expected.html b/testing/web-platform/tests/html/canvas/element/layers/2d.layer.global-states.filter.composite-expected.html
new file mode 100644
index 0000000000..97e85a1593
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/layers/2d.layer.global-states.filter.composite-expected.html
@@ -0,0 +1,50 @@
+
+
+Canvas test: 2d.layer.global-states.filter.composite
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            2d.layer.global-states.filter.composite
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Checks that layers with filters correctly use global render states.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
diff --git a/testing/web-platform/tests/html/canvas/element/layers/2d.layer.global-states.filter.composite.html b/testing/web-platform/tests/html/canvas/element/layers/2d.layer.global-states.filter.composite.html
new file mode 100644
index 0000000000..a2636d8525
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/layers/2d.layer.global-states.filter.composite.html
@@ -0,0 +1,37 @@
+
+
+
+Canvas test: 2d.layer.global-states.filter.composite
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            2d.layer.global-states.filter.composite
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Checks that layers with filters correctly use global render states.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
diff --git a/testing/web-platform/tests/html/canvas/element/layers/2d.layer.global-states.filter.composite.shadow-expected.html b/testing/web-platform/tests/html/canvas/element/layers/2d.layer.global-states.filter.composite.shadow-expected.html
new file mode 100644
index 0000000000..79191ee391
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/layers/2d.layer.global-states.filter.composite.shadow-expected.html
@@ -0,0 +1,53 @@
+
+
+Canvas test: 2d.layer.global-states.filter.composite.shadow
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            2d.layer.global-states.filter.composite.shadow
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Checks that layers with filters correctly use global render states.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
diff --git a/testing/web-platform/tests/html/canvas/element/layers/2d.layer.global-states.filter.composite.shadow.html b/testing/web-platform/tests/html/canvas/element/layers/2d.layer.global-states.filter.composite.shadow.html
new file mode 100644
index 0000000000..85b83b59b9
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/layers/2d.layer.global-states.filter.composite.shadow.html
@@ -0,0 +1,40 @@
+
+
+
+Canvas test: 2d.layer.global-states.filter.composite.shadow
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            2d.layer.global-states.filter.composite.shadow
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Checks that layers with filters correctly use global render states.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
diff --git a/testing/web-platform/tests/html/canvas/element/layers/2d.layer.global-states.filter.no-global-states-expected.html b/testing/web-platform/tests/html/canvas/element/layers/2d.layer.global-states.filter.no-global-states-expected.html
new file mode 100644
index 0000000000..e56fe0b360
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/layers/2d.layer.global-states.filter.no-global-states-expected.html
@@ -0,0 +1,50 @@
+
+
+Canvas test: 2d.layer.global-states.filter.no-global-states
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            2d.layer.global-states.filter.no-global-states
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Checks that layers with filters correctly use global render states.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
diff --git a/testing/web-platform/tests/html/canvas/element/layers/2d.layer.global-states.filter.no-global-states.html b/testing/web-platform/tests/html/canvas/element/layers/2d.layer.global-states.filter.no-global-states.html
new file mode 100644
index 0000000000..af495b21cd
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/layers/2d.layer.global-states.filter.no-global-states.html
@@ -0,0 +1,37 @@
+
+
+
+Canvas test: 2d.layer.global-states.filter.no-global-states
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            2d.layer.global-states.filter.no-global-states
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Checks that layers with filters correctly use global render states.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
diff --git a/testing/web-platform/tests/html/canvas/element/layers/2d.layer.global-states.filter.shadow-expected.html b/testing/web-platform/tests/html/canvas/element/layers/2d.layer.global-states.filter.shadow-expected.html
new file mode 100644
index 0000000000..59cf16fa87
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/layers/2d.layer.global-states.filter.shadow-expected.html
@@ -0,0 +1,52 @@
+
+
+Canvas test: 2d.layer.global-states.filter.shadow
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            2d.layer.global-states.filter.shadow
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Checks that layers with filters correctly use global render states.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
diff --git a/testing/web-platform/tests/html/canvas/element/layers/2d.layer.global-states.filter.shadow.html b/testing/web-platform/tests/html/canvas/element/layers/2d.layer.global-states.filter.shadow.html
new file mode 100644
index 0000000000..2c692d6db7
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/layers/2d.layer.global-states.filter.shadow.html
@@ -0,0 +1,39 @@
+
+
+
+Canvas test: 2d.layer.global-states.filter.shadow
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            2d.layer.global-states.filter.shadow
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Checks that layers with filters correctly use global render states.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
diff --git a/testing/web-platform/tests/html/canvas/element/layers/2d.layer.global-states.no-global-states-expected.html b/testing/web-platform/tests/html/canvas/element/layers/2d.layer.global-states.no-global-states-expected.html
new file mode 100644
index 0000000000..b91a2ae8b5
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/layers/2d.layer.global-states.no-global-states-expected.html
@@ -0,0 +1,31 @@
+
+
+Canvas test: 2d.layer.global-states.no-global-states
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            2d.layer.global-states.no-global-states
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Checks that layers correctly use global render states.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
diff --git a/testing/web-platform/tests/html/canvas/element/layers/2d.layer.global-states.no-global-states.html b/testing/web-platform/tests/html/canvas/element/layers/2d.layer.global-states.no-global-states.html
new file mode 100644
index 0000000000..d561be2341
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/layers/2d.layer.global-states.no-global-states.html
@@ -0,0 +1,34 @@
+
+
+
+Canvas test: 2d.layer.global-states.no-global-states
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            2d.layer.global-states.no-global-states
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Checks that layers correctly use global render states.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
diff --git a/testing/web-platform/tests/html/canvas/element/layers/2d.layer.global-states.shadow-expected.html b/testing/web-platform/tests/html/canvas/element/layers/2d.layer.global-states.shadow-expected.html
new file mode 100644
index 0000000000..ba56644d6c
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/layers/2d.layer.global-states.shadow-expected.html
@@ -0,0 +1,33 @@
+
+
+Canvas test: 2d.layer.global-states.shadow
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            2d.layer.global-states.shadow
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Checks that layers correctly use global render states.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
diff --git a/testing/web-platform/tests/html/canvas/element/layers/2d.layer.global-states.shadow.html b/testing/web-platform/tests/html/canvas/element/layers/2d.layer.global-states.shadow.html
new file mode 100644
index 0000000000..bd9e868d1e
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/layers/2d.layer.global-states.shadow.html
@@ -0,0 +1,36 @@
+
+
+
+Canvas test: 2d.layer.global-states.shadow
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            2d.layer.global-states.shadow
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Checks that layers correctly use global render states.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
diff --git a/testing/web-platform/tests/html/canvas/element/layers/2d.layer.nested-expected.html b/testing/web-platform/tests/html/canvas/element/layers/2d.layer.nested-expected.html
new file mode 100644
index 0000000000..65525d4d6a
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/layers/2d.layer.nested-expected.html
@@ -0,0 +1,37 @@
+
+
+Canvas test: 2d.layer.nested
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            2d.layer.nested
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Tests nested canvas layers.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
diff --git a/testing/web-platform/tests/html/canvas/element/layers/2d.layer.nested.html b/testing/web-platform/tests/html/canvas/element/layers/2d.layer.nested.html
new file mode 100644
index 0000000000..a508d8e5c8
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/layers/2d.layer.nested.html
@@ -0,0 +1,36 @@
+
+
+
+Canvas test: 2d.layer.nested
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            2d.layer.nested
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Tests nested canvas layers.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
diff --git a/testing/web-platform/tests/html/canvas/element/layers/2d.layer.render-opportunities.createImageBitmap-expected.html b/testing/web-platform/tests/html/canvas/element/layers/2d.layer.render-opportunities.createImageBitmap-expected.html
new file mode 100644
index 0000000000..8ce0c51e8e
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/layers/2d.layer.render-opportunities.createImageBitmap-expected.html
@@ -0,0 +1,32 @@
+
+
+Canvas test: 2d.layer.render-opportunities.createImageBitmap
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            2d.layer.render-opportunities.createImageBitmap
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Check that layers state stack is flushed and rebuilt on frame renders.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
diff --git a/testing/web-platform/tests/html/canvas/element/layers/2d.layer.render-opportunities.createImageBitmap.html b/testing/web-platform/tests/html/canvas/element/layers/2d.layer.render-opportunities.createImageBitmap.html
new file mode 100644
index 0000000000..4ffcaa3e3c
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/layers/2d.layer.render-opportunities.createImageBitmap.html
@@ -0,0 +1,32 @@
+
+
+
+Canvas test: 2d.layer.render-opportunities.createImageBitmap
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            2d.layer.render-opportunities.createImageBitmap
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Check that layers state stack is flushed and rebuilt on frame renders.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
diff --git a/testing/web-platform/tests/html/canvas/element/layers/2d.layer.render-opportunities.drawImage-expected.html b/testing/web-platform/tests/html/canvas/element/layers/2d.layer.render-opportunities.drawImage-expected.html
new file mode 100644
index 0000000000..1ddc6d1b44
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/layers/2d.layer.render-opportunities.drawImage-expected.html
@@ -0,0 +1,32 @@
+
+
+Canvas test: 2d.layer.render-opportunities.drawImage
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            2d.layer.render-opportunities.drawImage
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Check that layers state stack is flushed and rebuilt on frame renders.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
diff --git a/testing/web-platform/tests/html/canvas/element/layers/2d.layer.render-opportunities.drawImage.html b/testing/web-platform/tests/html/canvas/element/layers/2d.layer.render-opportunities.drawImage.html
new file mode 100644
index 0000000000..4eb0b6f721
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/layers/2d.layer.render-opportunities.drawImage.html
@@ -0,0 +1,34 @@
+
+
+
+Canvas test: 2d.layer.render-opportunities.drawImage
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            2d.layer.render-opportunities.drawImage
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Check that layers state stack is flushed and rebuilt on frame renders.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
diff --git a/testing/web-platform/tests/html/canvas/element/layers/2d.layer.render-opportunities.getImageData-expected.html b/testing/web-platform/tests/html/canvas/element/layers/2d.layer.render-opportunities.getImageData-expected.html
new file mode 100644
index 0000000000..ea0e78e0f2
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/layers/2d.layer.render-opportunities.getImageData-expected.html
@@ -0,0 +1,32 @@
+
+
+Canvas test: 2d.layer.render-opportunities.getImageData
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            2d.layer.render-opportunities.getImageData
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Check that layers state stack is flushed and rebuilt on frame renders.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
diff --git a/testing/web-platform/tests/html/canvas/element/layers/2d.layer.render-opportunities.getImageData.html b/testing/web-platform/tests/html/canvas/element/layers/2d.layer.render-opportunities.getImageData.html
new file mode 100644
index 0000000000..3cf514a03f
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/layers/2d.layer.render-opportunities.getImageData.html
@@ -0,0 +1,32 @@
+
+
+
+Canvas test: 2d.layer.render-opportunities.getImageData
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            2d.layer.render-opportunities.getImageData
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Check that layers state stack is flushed and rebuilt on frame renders.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
diff --git a/testing/web-platform/tests/html/canvas/element/layers/2d.layer.render-opportunities.putImageData-expected.html b/testing/web-platform/tests/html/canvas/element/layers/2d.layer.render-opportunities.putImageData-expected.html
new file mode 100644
index 0000000000..3d63bbe776
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/layers/2d.layer.render-opportunities.putImageData-expected.html
@@ -0,0 +1,32 @@
+
+
+Canvas test: 2d.layer.render-opportunities.putImageData
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            2d.layer.render-opportunities.putImageData
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Check that layers state stack is flushed and rebuilt on frame renders.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
diff --git a/testing/web-platform/tests/html/canvas/element/layers/2d.layer.render-opportunities.putImageData.html b/testing/web-platform/tests/html/canvas/element/layers/2d.layer.render-opportunities.putImageData.html
new file mode 100644
index 0000000000..8da3dafbb7
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/layers/2d.layer.render-opportunities.putImageData.html
@@ -0,0 +1,34 @@
+
+
+
+Canvas test: 2d.layer.render-opportunities.putImageData
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            2d.layer.render-opportunities.putImageData
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Check that layers state stack is flushed and rebuilt on frame renders.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
diff --git a/testing/web-platform/tests/html/canvas/element/layers/2d.layer.render-opportunities.requestAnimationFrame-expected.html b/testing/web-platform/tests/html/canvas/element/layers/2d.layer.render-opportunities.requestAnimationFrame-expected.html
new file mode 100644
index 0000000000..138f3a7ccb
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/layers/2d.layer.render-opportunities.requestAnimationFrame-expected.html
@@ -0,0 +1,35 @@
+
+
+
+Canvas test: 2d.layer.render-opportunities.requestAnimationFrame
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            2d.layer.render-opportunities.requestAnimationFrame
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Check that layers state stack is flushed and rebuilt on frame renders.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+
\ No newline at end of file
diff --git a/testing/web-platform/tests/html/canvas/element/layers/2d.layer.render-opportunities.requestAnimationFrame.html b/testing/web-platform/tests/html/canvas/element/layers/2d.layer.render-opportunities.requestAnimationFrame.html
new file mode 100644
index 0000000000..889ff5ba09
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/layers/2d.layer.render-opportunities.requestAnimationFrame.html
@@ -0,0 +1,35 @@
+
+
+
+
+Canvas test: 2d.layer.render-opportunities.requestAnimationFrame
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            2d.layer.render-opportunities.requestAnimationFrame
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Check that layers state stack is flushed and rebuilt on frame renders.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+
\ No newline at end of file
diff --git a/testing/web-platform/tests/html/canvas/element/layers/2d.layer.render-opportunities.toBlob-expected.html b/testing/web-platform/tests/html/canvas/element/layers/2d.layer.render-opportunities.toBlob-expected.html
new file mode 100644
index 0000000000..fda8e8d7c6
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/layers/2d.layer.render-opportunities.toBlob-expected.html
@@ -0,0 +1,35 @@
+
+
+
+Canvas test: 2d.layer.render-opportunities.toBlob
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            2d.layer.render-opportunities.toBlob
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Check that layers state stack is flushed and rebuilt on frame renders.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+
\ No newline at end of file
diff --git a/testing/web-platform/tests/html/canvas/element/layers/2d.layer.render-opportunities.toBlob.html b/testing/web-platform/tests/html/canvas/element/layers/2d.layer.render-opportunities.toBlob.html
new file mode 100644
index 0000000000..908730424a
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/layers/2d.layer.render-opportunities.toBlob.html
@@ -0,0 +1,35 @@
+
+
+
+
+Canvas test: 2d.layer.render-opportunities.toBlob
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            2d.layer.render-opportunities.toBlob
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Check that layers state stack is flushed and rebuilt on frame renders.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+
\ No newline at end of file
diff --git a/testing/web-platform/tests/html/canvas/element/layers/2d.layer.render-opportunities.toDataURL-expected.html b/testing/web-platform/tests/html/canvas/element/layers/2d.layer.render-opportunities.toDataURL-expected.html
new file mode 100644
index 0000000000..22a9770331
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/layers/2d.layer.render-opportunities.toDataURL-expected.html
@@ -0,0 +1,32 @@
+
+
+Canvas test: 2d.layer.render-opportunities.toDataURL
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            2d.layer.render-opportunities.toDataURL
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Check that layers state stack is flushed and rebuilt on frame renders.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
diff --git a/testing/web-platform/tests/html/canvas/element/layers/2d.layer.render-opportunities.toDataURL.html b/testing/web-platform/tests/html/canvas/element/layers/2d.layer.render-opportunities.toDataURL.html
new file mode 100644
index 0000000000..152f66a12b
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/layers/2d.layer.render-opportunities.toDataURL.html
@@ -0,0 +1,32 @@
+
+
+
+Canvas test: 2d.layer.render-opportunities.toDataURL
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            2d.layer.render-opportunities.toDataURL
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Check that layers state stack is flushed and rebuilt on frame renders.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
diff --git a/testing/web-platform/tests/html/canvas/element/layers/2d.layer.restore-style-expected.html b/testing/web-platform/tests/html/canvas/element/layers/2d.layer.restore-style-expected.html
new file mode 100644
index 0000000000..1d0ac3558d
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/layers/2d.layer.restore-style-expected.html
@@ -0,0 +1,24 @@
+
+
+Canvas test: 2d.layer.restore-style
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            2d.layer.restore-style
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Test that ensure layers restores style values upon endLayer.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
diff --git a/testing/web-platform/tests/html/canvas/element/layers/2d.layer.restore-style.html b/testing/web-platform/tests/html/canvas/element/layers/2d.layer.restore-style.html
new file mode 100644
index 0000000000..2537f409d6
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/layers/2d.layer.restore-style.html
@@ -0,0 +1,25 @@
+
+
+
+
+Canvas test: 2d.layer.restore-style
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            2d.layer.restore-style
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Test that ensure layers restores style values upon endLayer.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
diff --git a/testing/web-platform/tests/html/canvas/element/layers/2d.layer.several-complex-expected.html b/testing/web-platform/tests/html/canvas/element/layers/2d.layer.several-complex-expected.html
new file mode 100644
index 0000000000..84ad624474
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/layers/2d.layer.several-complex-expected.html
@@ -0,0 +1,34 @@
+
+
+Canvas test: 2d.layer.several-complex
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            2d.layer.several-complex
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Test to ensure beginlayer works for filter, alpha and shadow, even with consecutive layers.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
diff --git a/testing/web-platform/tests/html/canvas/element/layers/2d.layer.several-complex.html b/testing/web-platform/tests/html/canvas/element/layers/2d.layer.several-complex.html
new file mode 100644
index 0000000000..6ae78f690a
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/layers/2d.layer.several-complex.html
@@ -0,0 +1,34 @@
+
+
+
+
+Canvas test: 2d.layer.several-complex
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            2d.layer.several-complex
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Test to ensure beginlayer works for filter, alpha and shadow, even with consecutive layers.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
diff --git a/testing/web-platform/tests/html/canvas/element/layers/2d.layer.unclosed-expected.html b/testing/web-platform/tests/html/canvas/element/layers/2d.layer.unclosed-expected.html
new file mode 100644
index 0000000000..c41b253c95
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/layers/2d.layer.unclosed-expected.html
@@ -0,0 +1,23 @@
+
+
+Canvas test: 2d.layer.unclosed
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            2d.layer.unclosed
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Check that layers are rendered even if not closed.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
diff --git a/testing/web-platform/tests/html/canvas/element/layers/2d.layer.unclosed.html b/testing/web-platform/tests/html/canvas/element/layers/2d.layer.unclosed.html
new file mode 100644
index 0000000000..788889ee7e
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/layers/2d.layer.unclosed.html
@@ -0,0 +1,22 @@
+
+
+
+Canvas test: 2d.layer.unclosed
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            2d.layer.unclosed
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Check that layers are rendered even if not closed.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
diff --git a/testing/web-platform/tests/html/canvas/element/line-styles/2d.line.cap.butt.html b/testing/web-platform/tests/html/canvas/element/line-styles/2d.line.cap.butt.html
new file mode 100644
index 0000000000..f8c7cab1f2
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/line-styles/2d.line.cap.butt.html
@@ -0,0 +1,60 @@
+
+
+Canvas test: 2d.line.cap.butt
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            2d.line.cap.butt
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            lineCap 'butt' is rendered correctly
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/line-styles/2d.line.cap.closed.html b/testing/web-platform/tests/html/canvas/element/line-styles/2d.line.cap.closed.html
new file mode 100644
index 0000000000..263c6c6c76
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/line-styles/2d.line.cap.closed.html
@@ -0,0 +1,45 @@
+
+
+Canvas test: 2d.line.cap.closed
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.line.cap.closed
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Line caps are not drawn at the corners of an unclosed rectangle
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/line-styles/2d.line.cap.invalid.html b/testing/web-platform/tests/html/canvas/element/line-styles/2d.line.cap.invalid.html
new file mode 100644
index 0000000000..22e98ee326
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/line-styles/2d.line.cap.invalid.html
@@ -0,0 +1,51 @@
+
+
+Canvas test: 2d.line.cap.invalid
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                2d.line.cap.invalid
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                Setting lineCap to invalid values is ignored
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/line-styles/2d.line.cap.open.html b/testing/web-platform/tests/html/canvas/element/line-styles/2d.line.cap.open.html
new file mode 100644
index 0000000000..6f7918a1c9
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/line-styles/2d.line.cap.open.html
@@ -0,0 +1,45 @@
+
+
+Canvas test: 2d.line.cap.open
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  2d.line.cap.open
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Line caps are drawn at the corners of an unclosed rectangle
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/line-styles/2d.line.cap.round.html b/testing/web-platform/tests/html/canvas/element/line-styles/2d.line.cap.round.html
new file mode 100644
index 0000000000..3990ad384e
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/line-styles/2d.line.cap.round.html
@@ -0,0 +1,76 @@
+
+
+Canvas test: 2d.line.cap.round
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    2d.line.cap.round
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    lineCap 'round' is rendered correctly
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/line-styles/2d.line.cap.square.html b/testing/web-platform/tests/html/canvas/element/line-styles/2d.line.cap.square.html
new file mode 100644
index 0000000000..8d6af320fe
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/line-styles/2d.line.cap.square.html
@@ -0,0 +1,60 @@
+
+
+Canvas test: 2d.line.cap.square
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      2d.line.cap.square
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      lineCap 'square' is rendered correctly
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/line-styles/2d.line.cap.valid.html b/testing/web-platform/tests/html/canvas/element/line-styles/2d.line.cap.valid.html
new file mode 100644
index 0000000000..a11d32030e
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/line-styles/2d.line.cap.valid.html
@@ -0,0 +1,33 @@
+
+
+Canvas test: 2d.line.cap.valid
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        2d.line.cap.valid
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        Setting lineCap to valid values works
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/line-styles/2d.line.cross.html b/testing/web-platform/tests/html/canvas/element/line-styles/2d.line.cross.html
new file mode 100644
index 0000000000..e6866e3e40
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/line-styles/2d.line.cross.html
@@ -0,0 +1,42 @@
+
+
+Canvas test: 2d.line.cross
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          2d.line.cross
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/line-styles/2d.line.defaults.html b/testing/web-platform/tests/html/canvas/element/line-styles/2d.line.defaults.html
new file mode 100644
index 0000000000..daa4634387
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/line-styles/2d.line.defaults.html
@@ -0,0 +1,29 @@
+
+
+Canvas test: 2d.line.defaults
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            2d.line.defaults
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/line-styles/2d.line.invalid.strokestyle.html b/testing/web-platform/tests/html/canvas/element/line-styles/2d.line.invalid.strokestyle.html
new file mode 100644
index 0000000000..89a234ecc3
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/line-styles/2d.line.invalid.strokestyle.html
@@ -0,0 +1,36 @@
+
+
+Canvas test: 2d.line.invalid.strokestyle
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.line.invalid.strokestyle
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Verify correct behavior of canvas on an invalid strokeStyle()
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/line-styles/2d.line.join.bevel.html b/testing/web-platform/tests/html/canvas/element/line-styles/2d.line.join.bevel.html
new file mode 100644
index 0000000000..041e9a1605
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/line-styles/2d.line.join.bevel.html
@@ -0,0 +1,79 @@
+
+
+Canvas test: 2d.line.join.bevel
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                2d.line.join.bevel
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                lineJoin 'bevel' is rendered correctly
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/line-styles/2d.line.join.closed.html b/testing/web-platform/tests/html/canvas/element/line-styles/2d.line.join.closed.html
new file mode 100644
index 0000000000..a52219ccce
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/line-styles/2d.line.join.closed.html
@@ -0,0 +1,44 @@
+
+
+Canvas test: 2d.line.join.closed
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  2d.line.join.closed
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Line joins are drawn at the corner of a closed rectangle
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/line-styles/2d.line.join.invalid.html b/testing/web-platform/tests/html/canvas/element/line-styles/2d.line.join.invalid.html
new file mode 100644
index 0000000000..3c34ef3475
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/line-styles/2d.line.join.invalid.html
@@ -0,0 +1,51 @@
+
+
+Canvas test: 2d.line.join.invalid
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    2d.line.join.invalid
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    Setting lineJoin to invalid values is ignored
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/line-styles/2d.line.join.miter.html b/testing/web-platform/tests/html/canvas/element/line-styles/2d.line.join.miter.html
new file mode 100644
index 0000000000..5a3472e92d
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/line-styles/2d.line.join.miter.html
@@ -0,0 +1,70 @@
+
+
+Canvas test: 2d.line.join.miter
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      2d.line.join.miter
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      lineJoin 'miter' is rendered correctly
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/line-styles/2d.line.join.open.html b/testing/web-platform/tests/html/canvas/element/line-styles/2d.line.join.open.html
new file mode 100644
index 0000000000..55b7a8b49e
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/line-styles/2d.line.join.open.html
@@ -0,0 +1,44 @@
+
+
+Canvas test: 2d.line.join.open
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        2d.line.join.open
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        Line joins are not drawn at the corner of an unclosed rectangle
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/line-styles/2d.line.join.parallel.html b/testing/web-platform/tests/html/canvas/element/line-styles/2d.line.join.parallel.html
new file mode 100644
index 0000000000..cd736b503d
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/line-styles/2d.line.join.parallel.html
@@ -0,0 +1,41 @@
+
+
+Canvas test: 2d.line.join.parallel
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          2d.line.join.parallel
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          Line joins are drawn at 180-degree joins
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/line-styles/2d.line.join.round.html b/testing/web-platform/tests/html/canvas/element/line-styles/2d.line.join.round.html
new file mode 100644
index 0000000000..fb968b9966
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/line-styles/2d.line.join.round.html
@@ -0,0 +1,77 @@
+
+
+Canvas test: 2d.line.join.round
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            2d.line.join.round
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            lineJoin 'round' is rendered correctly
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/line-styles/2d.line.join.valid.html b/testing/web-platform/tests/html/canvas/element/line-styles/2d.line.join.valid.html
new file mode 100644
index 0000000000..3e5e200cb5
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/line-styles/2d.line.join.valid.html
@@ -0,0 +1,33 @@
+
+
+Canvas test: 2d.line.join.valid
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.line.join.valid
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Setting lineJoin to valid values works
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/line-styles/2d.line.miter.acute.html b/testing/web-platform/tests/html/canvas/element/line-styles/2d.line.miter.acute.html
new file mode 100644
index 0000000000..6acba4f3d2
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/line-styles/2d.line.miter.acute.html
@@ -0,0 +1,51 @@
+
+
+Canvas test: 2d.line.miter.acute
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                2d.line.miter.acute
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                Miter joins are drawn correctly with acute angles
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/line-styles/2d.line.miter.exceeded.html b/testing/web-platform/tests/html/canvas/element/line-styles/2d.line.miter.exceeded.html
new file mode 100644
index 0000000000..542851d580
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/line-styles/2d.line.miter.exceeded.html
@@ -0,0 +1,43 @@
+
+
+Canvas test: 2d.line.miter.exceeded
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  2d.line.miter.exceeded
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Miter joins are not drawn when the miter limit is exceeded
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/line-styles/2d.line.miter.invalid.html b/testing/web-platform/tests/html/canvas/element/line-styles/2d.line.miter.invalid.html
new file mode 100644
index 0000000000..826a6e24a7
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/line-styles/2d.line.miter.invalid.html
@@ -0,0 +1,59 @@
+
+
+Canvas test: 2d.line.miter.invalid
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    2d.line.miter.invalid
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    Setting miterLimit to invalid values is ignored
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/line-styles/2d.line.miter.lineedge.html b/testing/web-platform/tests/html/canvas/element/line-styles/2d.line.miter.lineedge.html
new file mode 100644
index 0000000000..68eeb06162
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/line-styles/2d.line.miter.lineedge.html
@@ -0,0 +1,40 @@
+
+
+Canvas test: 2d.line.miter.lineedge
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      2d.line.miter.lineedge
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      Miter joins are not drawn when the miter limit is exceeded at the corners of a zero-height rectangle
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/line-styles/2d.line.miter.obtuse.html b/testing/web-platform/tests/html/canvas/element/line-styles/2d.line.miter.obtuse.html
new file mode 100644
index 0000000000..2dd08f6afc
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/line-styles/2d.line.miter.obtuse.html
@@ -0,0 +1,51 @@
+
+
+Canvas test: 2d.line.miter.obtuse
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        2d.line.miter.obtuse
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        Miter joins are drawn correctly with obtuse angles
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/line-styles/2d.line.miter.rightangle.html b/testing/web-platform/tests/html/canvas/element/line-styles/2d.line.miter.rightangle.html
new file mode 100644
index 0000000000..7ae9f5e232
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/line-styles/2d.line.miter.rightangle.html
@@ -0,0 +1,43 @@
+
+
+Canvas test: 2d.line.miter.rightangle
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          2d.line.miter.rightangle
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          Miter joins are not drawn when the miter limit is exceeded, on exact right angles
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/line-styles/2d.line.miter.valid.html b/testing/web-platform/tests/html/canvas/element/line-styles/2d.line.miter.valid.html
new file mode 100644
index 0000000000..51b00c292d
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/line-styles/2d.line.miter.valid.html
@@ -0,0 +1,36 @@
+
+
+Canvas test: 2d.line.miter.valid
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            2d.line.miter.valid
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Setting miterLimit to valid values works
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/line-styles/2d.line.miter.within.html b/testing/web-platform/tests/html/canvas/element/line-styles/2d.line.miter.within.html
new file mode 100644
index 0000000000..f438866009
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/line-styles/2d.line.miter.within.html
@@ -0,0 +1,43 @@
+
+
+Canvas test: 2d.line.miter.within
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.line.miter.within
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Miter joins are drawn when the miter limit is not quite exceeded
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/line-styles/2d.line.union.html b/testing/web-platform/tests/html/canvas/element/line-styles/2d.line.union.html
new file mode 100644
index 0000000000..9d43cebee7
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/line-styles/2d.line.union.html
@@ -0,0 +1,45 @@
+
+
+Canvas test: 2d.line.union
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                2d.line.union
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/line-styles/2d.line.width.basic.html b/testing/web-platform/tests/html/canvas/element/line-styles/2d.line.width.basic.html
new file mode 100644
index 0000000000..f2e9a9f86d
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/line-styles/2d.line.width.basic.html
@@ -0,0 +1,62 @@
+
+
+Canvas test: 2d.line.width.basic
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  2d.line.width.basic
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  lineWidth determines the width of line strokes
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/line-styles/2d.line.width.invalid.html b/testing/web-platform/tests/html/canvas/element/line-styles/2d.line.width.invalid.html
new file mode 100644
index 0000000000..363060cf6d
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/line-styles/2d.line.width.invalid.html
@@ -0,0 +1,59 @@
+
+
+Canvas test: 2d.line.width.invalid
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    2d.line.width.invalid
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    Setting lineWidth to invalid values is ignored
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/line-styles/2d.line.width.scaledefault.html b/testing/web-platform/tests/html/canvas/element/line-styles/2d.line.width.scaledefault.html
new file mode 100644
index 0000000000..6c4ec52b5d
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/line-styles/2d.line.width.scaledefault.html
@@ -0,0 +1,39 @@
+
+
+Canvas test: 2d.line.width.scaledefault
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      2d.line.width.scaledefault
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      Default lineWidth strokes are affected by scale transformations
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/line-styles/2d.line.width.transformed.html b/testing/web-platform/tests/html/canvas/element/line-styles/2d.line.width.transformed.html
new file mode 100644
index 0000000000..600ce93fb7
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/line-styles/2d.line.width.transformed.html
@@ -0,0 +1,68 @@
+
+
+Canvas test: 2d.line.width.transformed
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        2d.line.width.transformed
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        Line stroke widths are affected by scale transformations
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/line-styles/2d.line.width.valid.html b/testing/web-platform/tests/html/canvas/element/line-styles/2d.line.width.valid.html
new file mode 100644
index 0000000000..1a76b0ed4c
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/line-styles/2d.line.width.valid.html
@@ -0,0 +1,36 @@
+
+
+Canvas test: 2d.line.width.valid
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          2d.line.width.valid
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          Setting lineWidth to valid values works
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/manual/README.md b/testing/web-platform/tests/html/canvas/element/manual/README.md
new file mode 100644
index 0000000000..68d877200b
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/manual/README.md
@@ -0,0 +1 @@
+This folder contains tests that were manually added to the repository. All other tests have been autogenerated by html/canvas/tools/build.sh
\ No newline at end of file
diff --git a/testing/web-platform/tests/html/canvas/element/manual/building-paths/canvas_complexshapes_arcto_001-ref.htm b/testing/web-platform/tests/html/canvas/element/manual/building-paths/canvas_complexshapes_arcto_001-ref.htm
new file mode 100644
index 0000000000..31ddfcafd9
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/manual/building-paths/canvas_complexshapes_arcto_001-ref.htm
@@ -0,0 +1,22 @@
+
+
+    
+        HTML5 Canvas Test:  arcTo() adds to subpath if same point
+        
+        
+    
+    
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Description: If x1,y1 and x2,y2 are the same point, then arcTo must add x1,y1 to the subpath, and connect that point to x0,y0 with a straight line.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+        Browser does not support HTML5 Canvas (test ref).
+    
+
diff --git a/testing/web-platform/tests/html/canvas/element/manual/building-paths/canvas_complexshapes_arcto_001.htm b/testing/web-platform/tests/html/canvas/element/manual/building-paths/canvas_complexshapes_arcto_001.htm
new file mode 100644
index 0000000000..c3f2fb6f43
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/manual/building-paths/canvas_complexshapes_arcto_001.htm
@@ -0,0 +1,26 @@
+
+
+    
+        HTML5 Canvas Test:  arcTo() adds to subpath if same point
+        
+        
+        
+        
+        
+    
+    
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Description: If x1,y1 and x2,y2 are the same point, then arcTo must add x1,y1 to the subpath, and connect that point to x0,y0 with a straight line.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+        Browser does not support HTML5 Canvas.
+    
+
diff --git a/testing/web-platform/tests/html/canvas/element/manual/building-paths/canvas_complexshapes_beziercurveto_001-ref.htm b/testing/web-platform/tests/html/canvas/element/manual/building-paths/canvas_complexshapes_beziercurveto_001-ref.htm
new file mode 100644
index 0000000000..6be08c0b3c
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/manual/building-paths/canvas_complexshapes_beziercurveto_001-ref.htm
@@ -0,0 +1,32 @@
+
+
+    
+        HTML5 Canvas Test:  bezierCurveTo() must ensure subpaths
+        
+        
+    
+    
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Description: bezierCurveTo(cp1x, cp1y, cp2x, cp2y, x, y) must ensure there is a subpath for the point (cp1x,cp1y) if the context has no subpaths, then it must connect the last point in the subpath to the point (x,y).
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+        Browser does not support HTML5 Canvas (ref test).
+    
+
diff --git a/testing/web-platform/tests/html/canvas/element/manual/building-paths/canvas_complexshapes_beziercurveto_001.htm b/testing/web-platform/tests/html/canvas/element/manual/building-paths/canvas_complexshapes_beziercurveto_001.htm
new file mode 100644
index 0000000000..d04926ebac
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/manual/building-paths/canvas_complexshapes_beziercurveto_001.htm
@@ -0,0 +1,35 @@
+
+
+    
+        HTML5 Canvas Test:  bezierCurveTo() must ensure subpaths
+        
+        
+        
+        
+        
+    
+    
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Description: bezierCurveTo(cp1x, cp1y, cp2x, cp2y, x, y) must ensure there is a subpath for the point (cp1x,cp1y) if the context has no subpaths, then it must connect the last point in the subpath to the point (x,y).
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+        Browser does not support HTML5 Canvas.
+    
+
diff --git a/testing/web-platform/tests/html/canvas/element/manual/compositing/alpha_filter_shadow-ref.html b/testing/web-platform/tests/html/canvas/element/manual/compositing/alpha_filter_shadow-ref.html
new file mode 100644
index 0000000000..3ff0ed291d
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/manual/compositing/alpha_filter_shadow-ref.html
@@ -0,0 +1,15 @@
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/manual/compositing/alpha_filter_shadow.html b/testing/web-platform/tests/html/canvas/element/manual/compositing/alpha_filter_shadow.html
new file mode 100644
index 0000000000..1df227ce0b
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/manual/compositing/alpha_filter_shadow.html
@@ -0,0 +1,16 @@
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/manual/compositing/canvas_compositing_globalcompositeoperation_001-ref.htm b/testing/web-platform/tests/html/canvas/element/manual/compositing/canvas_compositing_globalcompositeoperation_001-ref.htm
new file mode 100644
index 0000000000..70196fb36a
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/manual/compositing/canvas_compositing_globalcompositeoperation_001-ref.htm
@@ -0,0 +1,11 @@
+
+
+    
+        HTML5 Canvas Test:  globalCompositeOperation "destination-over"
+        
+    
+    
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Description: If the globalCompositeOperation is set to "destination-over", display the destination image wherever the destination image is opaque.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            black rectangle
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+    
+
diff --git a/testing/web-platform/tests/html/canvas/element/manual/compositing/canvas_compositing_globalcompositeoperation_001.htm b/testing/web-platform/tests/html/canvas/element/manual/compositing/canvas_compositing_globalcompositeoperation_001.htm
new file mode 100644
index 0000000000..8d6208eb32
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/manual/compositing/canvas_compositing_globalcompositeoperation_001.htm
@@ -0,0 +1,32 @@
+
+
+    
+        HTML5 Canvas Test:  globalCompositeOperation "destination-over"
+        
+        
+        
+        
+        
+    
+    
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Description: If the globalCompositeOperation is set to "destination-over", display the destination image wherever the destination image is opaque.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+        Browser does not support HTML5 Canvas.
+    
+
diff --git a/testing/web-platform/tests/html/canvas/element/manual/context-attributes/canvas-with-padding.html b/testing/web-platform/tests/html/canvas/element/manual/context-attributes/canvas-with-padding.html
new file mode 100644
index 0000000000..5a93ef680a
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/manual/context-attributes/canvas-with-padding.html
@@ -0,0 +1,10 @@
+
+
+
+
\ No newline at end of file
diff --git a/testing/web-platform/tests/html/canvas/element/manual/context-attributes/clearRect_alpha_false-ref.html b/testing/web-platform/tests/html/canvas/element/manual/context-attributes/clearRect_alpha_false-ref.html
new file mode 100644
index 0000000000..eccfc4e2cc
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/manual/context-attributes/clearRect_alpha_false-ref.html
@@ -0,0 +1,10 @@
+
+
+CanvasRenderingContext 2D with alpha=flase, fillRect with semi-transparent color.
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Test passes if a 100x100 black square is displayed below.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/manual/context-attributes/clearRect_alpha_false.html b/testing/web-platform/tests/html/canvas/element/manual/context-attributes/clearRect_alpha_false.html
new file mode 100644
index 0000000000..a328fbf97a
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/manual/context-attributes/clearRect_alpha_false.html
@@ -0,0 +1,15 @@
+
+
+CanvasRenderingContext 2D with alpha=flase, clearRect
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Test passes if a 100x100 black square is displayed below.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/manual/context-attributes/drawImage_alpha_false-ref.html b/testing/web-platform/tests/html/canvas/element/manual/context-attributes/drawImage_alpha_false-ref.html
new file mode 100644
index 0000000000..2c9e5620b2
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/manual/context-attributes/drawImage_alpha_false-ref.html
@@ -0,0 +1,10 @@
+
+
+CanvasRenderingContext 2D with alpha=flase, drawing a transparent image.
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Test passes if a 100x100 black square is displayed below.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/manual/context-attributes/drawImage_alpha_false.html b/testing/web-platform/tests/html/canvas/element/manual/context-attributes/drawImage_alpha_false.html
new file mode 100644
index 0000000000..64f38bceb1
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/manual/context-attributes/drawImage_alpha_false.html
@@ -0,0 +1,20 @@
+
+
+CanvasRenderingContext 2D with alpha=flase, drawing a transparent image
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Test passes if a 100x100 black square is displayed below.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/manual/context-attributes/fillRect_alpha_false-ref.html b/testing/web-platform/tests/html/canvas/element/manual/context-attributes/fillRect_alpha_false-ref.html
new file mode 100644
index 0000000000..eccfc4e2cc
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/manual/context-attributes/fillRect_alpha_false-ref.html
@@ -0,0 +1,10 @@
+
+
+CanvasRenderingContext 2D with alpha=flase, fillRect with semi-transparent color.
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Test passes if a 100x100 black square is displayed below.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/manual/context-attributes/fillRect_alpha_false.html b/testing/web-platform/tests/html/canvas/element/manual/context-attributes/fillRect_alpha_false.html
new file mode 100644
index 0000000000..143756eb0c
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/manual/context-attributes/fillRect_alpha_false.html
@@ -0,0 +1,14 @@
+
+
+CanvasRenderingContext 2D with alpha=flase, fillRect with semi-transparent color.
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Test passes if a 100x100 black square is displayed below.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+
\ No newline at end of file
diff --git a/testing/web-platform/tests/html/canvas/element/manual/context-attributes/fill_alpha_false-ref.html b/testing/web-platform/tests/html/canvas/element/manual/context-attributes/fill_alpha_false-ref.html
new file mode 100644
index 0000000000..03265a656e
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/manual/context-attributes/fill_alpha_false-ref.html
@@ -0,0 +1,10 @@
+
+
+CanvasRenderingContext 2D with alpha=flase, path fill with transparent color and 'copy' composite operation.
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Test passes if a 100x100 black square is displayed below.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/manual/context-attributes/fill_alpha_false.html b/testing/web-platform/tests/html/canvas/element/manual/context-attributes/fill_alpha_false.html
new file mode 100644
index 0000000000..7872a79380
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/manual/context-attributes/fill_alpha_false.html
@@ -0,0 +1,18 @@
+
+
+CanvasRenderingContext 2D with alpha=flase, path fill with transparent color and 'copy' composite operation.
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Test passes if a 100x100 black square is displayed below.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/manual/context-attributes/getContextAttributes.html b/testing/web-platform/tests/html/canvas/element/manual/context-attributes/getContextAttributes.html
new file mode 100644
index 0000000000..47b3d96233
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/manual/context-attributes/getContextAttributes.html
@@ -0,0 +1,46 @@
+
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/manual/context-attributes/initial_color_alpha_false-ref.html b/testing/web-platform/tests/html/canvas/element/manual/context-attributes/initial_color_alpha_false-ref.html
new file mode 100644
index 0000000000..b67513c464
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/manual/context-attributes/initial_color_alpha_false-ref.html
@@ -0,0 +1,10 @@
+
+
+CanvasRenderingContext 2D with alpha=flase context creation parameter is initialized with solid black.
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Test passes if a 100x100 black square is displayed below.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/manual/context-attributes/initial_color_alpha_false.html b/testing/web-platform/tests/html/canvas/element/manual/context-attributes/initial_color_alpha_false.html
new file mode 100644
index 0000000000..9e86e5ce2c
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/manual/context-attributes/initial_color_alpha_false.html
@@ -0,0 +1,13 @@
+
+
+CanvasRenderingContext 2D with alpha=flase context creation parameter is initialized with solid black.
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Test passes if a 100x100 black square is displayed below.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/manual/context-attributes/reset_color_alpha_false-ref.html b/testing/web-platform/tests/html/canvas/element/manual/context-attributes/reset_color_alpha_false-ref.html
new file mode 100644
index 0000000000..d663131148
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/manual/context-attributes/reset_color_alpha_false-ref.html
@@ -0,0 +1,10 @@
+
+
+CanvasRenderingContext 2D with alpha=flase context creation parameter is re-initialized with solid black.
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Test passes if a 100x100 black square is displayed below.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/manual/context-attributes/reset_color_alpha_false.html b/testing/web-platform/tests/html/canvas/element/manual/context-attributes/reset_color_alpha_false.html
new file mode 100644
index 0000000000..191975e0f4
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/manual/context-attributes/reset_color_alpha_false.html
@@ -0,0 +1,17 @@
+
+
+CanvasRenderingContext 2D with alpha=flase context creation parameter is re-initialized with solid black.
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Test passes if a 100x100 black square is displayed below.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/manual/drawing-images-to-the-canvas/drawimage_canvas.html b/testing/web-platform/tests/html/canvas/element/manual/drawing-images-to-the-canvas/drawimage_canvas.html
new file mode 100644
index 0000000000..36bd085136
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/manual/drawing-images-to-the-canvas/drawimage_canvas.html
@@ -0,0 +1,203 @@
+
+
+
+
+
\ No newline at end of file
diff --git a/testing/web-platform/tests/html/canvas/element/manual/drawing-images-to-the-canvas/drawimage_canvas_self.html b/testing/web-platform/tests/html/canvas/element/manual/drawing-images-to-the-canvas/drawimage_canvas_self.html
new file mode 100644
index 0000000000..83cf53583c
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/manual/drawing-images-to-the-canvas/drawimage_canvas_self.html
@@ -0,0 +1,17 @@
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/manual/drawing-images-to-the-canvas/drawimage_canvas_self_ref.html b/testing/web-platform/tests/html/canvas/element/manual/drawing-images-to-the-canvas/drawimage_canvas_self_ref.html
new file mode 100644
index 0000000000..9f297cacdc
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/manual/drawing-images-to-the-canvas/drawimage_canvas_self_ref.html
@@ -0,0 +1,11 @@
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/manual/drawing-images-to-the-canvas/drawimage_crossorigin.sub.html b/testing/web-platform/tests/html/canvas/element/manual/drawing-images-to-the-canvas/drawimage_crossorigin.sub.html
new file mode 100644
index 0000000000..3d57d9f064
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/manual/drawing-images-to-the-canvas/drawimage_crossorigin.sub.html
@@ -0,0 +1,61 @@
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/manual/drawing-images-to-the-canvas/drawimage_html_image.html b/testing/web-platform/tests/html/canvas/element/manual/drawing-images-to-the-canvas/drawimage_html_image.html
new file mode 100644
index 0000000000..59a7d64465
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/manual/drawing-images-to-the-canvas/drawimage_html_image.html
@@ -0,0 +1,268 @@
+
+
+
+
+
\ No newline at end of file
diff --git a/testing/web-platform/tests/html/canvas/element/manual/drawing-images-to-the-canvas/drawimage_svg_image_1.html b/testing/web-platform/tests/html/canvas/element/manual/drawing-images-to-the-canvas/drawimage_svg_image_1.html
new file mode 100644
index 0000000000..ea3300bef2
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/manual/drawing-images-to-the-canvas/drawimage_svg_image_1.html
@@ -0,0 +1,31 @@
+
+
+Load a 100x100 image to a SVG image and draw it to a 100x100 canvas.
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/manual/drawing-images-to-the-canvas/drawimage_svg_image_with_foreign_object_does_not_taint.html b/testing/web-platform/tests/html/canvas/element/manual/drawing-images-to-the-canvas/drawimage_svg_image_with_foreign_object_does_not_taint.html
new file mode 100644
index 0000000000..f29b2bf5a8
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/manual/drawing-images-to-the-canvas/drawimage_svg_image_with_foreign_object_does_not_taint.html
@@ -0,0 +1,32 @@
+
+
+Draw an SVG image with a foreignObject to a canvas
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/manual/drawing-images-to-the-canvas/drawimage_zerosize-image.html b/testing/web-platform/tests/html/canvas/element/manual/drawing-images-to-the-canvas/drawimage_zerosize-image.html
new file mode 100644
index 0000000000..1c4e74866a
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/manual/drawing-images-to-the-canvas/drawimage_zerosize-image.html
@@ -0,0 +1,33 @@
+
+Canvas test: 2d.drawImage.zerosource.image
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            2d.drawImage.zerosource.image
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            drawImage with zero-sized source rectangle from image draws nothing without exception
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/manual/drawing-images-to-the-canvas/image-orientation/drawImage-from-bitmap-orientation-none-ref.html b/testing/web-platform/tests/html/canvas/element/manual/drawing-images-to-the-canvas/image-orientation/drawImage-from-bitmap-orientation-none-ref.html
new file mode 100644
index 0000000000..320a9b8108
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/manual/drawing-images-to-the-canvas/image-orientation/drawImage-from-bitmap-orientation-none-ref.html
@@ -0,0 +1,12 @@
+
+
+
+
+reference for drawImage from a createImageBitmap source with image orientation: none
+
+
+
+  
+  
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/manual/drawing-images-to-the-canvas/image-orientation/drawImage-from-bitmap-orientation-none.tentative.html b/testing/web-platform/tests/html/canvas/element/manual/drawing-images-to-the-canvas/image-orientation/drawImage-from-bitmap-orientation-none.tentative.html
new file mode 100644
index 0000000000..39ed4a25dc
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/manual/drawing-images-to-the-canvas/image-orientation/drawImage-from-bitmap-orientation-none.tentative.html
@@ -0,0 +1,31 @@
+
+
+
+
+createImageBitmap and drawImage from an element source with image orientation: none
+
+
+
+  
+
+
+  
+  
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/manual/drawing-images-to-the-canvas/image-orientation/drawImage-from-bitmap-ref.html b/testing/web-platform/tests/html/canvas/element/manual/drawing-images-to-the-canvas/image-orientation/drawImage-from-bitmap-ref.html
new file mode 100644
index 0000000000..261d6a0b7c
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/manual/drawing-images-to-the-canvas/image-orientation/drawImage-from-bitmap-ref.html
@@ -0,0 +1,12 @@
+
+
+
+
+reference for drawImage from a createImageBitmap source with image orientation: from-image
+
+
+
+  
+  
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/manual/drawing-images-to-the-canvas/image-orientation/drawImage-from-bitmap-swap-width-height-orientation-none-ref.html b/testing/web-platform/tests/html/canvas/element/manual/drawing-images-to-the-canvas/image-orientation/drawImage-from-bitmap-swap-width-height-orientation-none-ref.html
new file mode 100644
index 0000000000..3a78aad068
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/manual/drawing-images-to-the-canvas/image-orientation/drawImage-from-bitmap-swap-width-height-orientation-none-ref.html
@@ -0,0 +1,12 @@
+
+
+
+
+reference for drawImage from a createImageBitmap source with image orientation: none
+
+
+
+  
+  
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/manual/drawing-images-to-the-canvas/image-orientation/drawImage-from-bitmap-swap-width-height-orientation-none.tentative.html b/testing/web-platform/tests/html/canvas/element/manual/drawing-images-to-the-canvas/image-orientation/drawImage-from-bitmap-swap-width-height-orientation-none.tentative.html
new file mode 100644
index 0000000000..3b16241c97
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/manual/drawing-images-to-the-canvas/image-orientation/drawImage-from-bitmap-swap-width-height-orientation-none.tentative.html
@@ -0,0 +1,32 @@
+
+
+
+
+createImageBitmap and drawImage from an element source with image orientation: none
+
+
+
+  
+
+
+  
+  
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/manual/drawing-images-to-the-canvas/image-orientation/drawImage-from-bitmap-swap-width-height-ref.html b/testing/web-platform/tests/html/canvas/element/manual/drawing-images-to-the-canvas/image-orientation/drawImage-from-bitmap-swap-width-height-ref.html
new file mode 100644
index 0000000000..247d7f4049
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/manual/drawing-images-to-the-canvas/image-orientation/drawImage-from-bitmap-swap-width-height-ref.html
@@ -0,0 +1,12 @@
+
+
+
+
+reference for drawImage from a createImageBitmap source with image orientation: from-image
+
+
+
+  
+  
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/manual/drawing-images-to-the-canvas/image-orientation/drawImage-from-bitmap-swap-width-height.tentative.html b/testing/web-platform/tests/html/canvas/element/manual/drawing-images-to-the-canvas/image-orientation/drawImage-from-bitmap-swap-width-height.tentative.html
new file mode 100644
index 0000000000..744ca54f47
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/manual/drawing-images-to-the-canvas/image-orientation/drawImage-from-bitmap-swap-width-height.tentative.html
@@ -0,0 +1,32 @@
+
+
+
+
+createImageBitmap and drawImage from an element source with image orientation: from-image
+
+
+
+  
+
+
+  
+  
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/manual/drawing-images-to-the-canvas/image-orientation/drawImage-from-bitmap.tentative.html b/testing/web-platform/tests/html/canvas/element/manual/drawing-images-to-the-canvas/image-orientation/drawImage-from-bitmap.tentative.html
new file mode 100644
index 0000000000..632a170b88
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/manual/drawing-images-to-the-canvas/image-orientation/drawImage-from-bitmap.tentative.html
@@ -0,0 +1,31 @@
+
+
+
+
+createImageBitmap and drawImage from an element source with image orientation: from-image
+
+
+
+  
+
+
+  
+  
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/manual/drawing-images-to-the-canvas/image-orientation/drawImage-from-blob-ref.html b/testing/web-platform/tests/html/canvas/element/manual/drawing-images-to-the-canvas/image-orientation/drawImage-from-blob-ref.html
new file mode 100644
index 0000000000..2bd6037835
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/manual/drawing-images-to-the-canvas/image-orientation/drawImage-from-blob-ref.html
@@ -0,0 +1,10 @@
+
+
+
+
+createImageBitmap and drawImage from a blob with image orientation: from-image, reference
+
+
+  
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/manual/drawing-images-to-the-canvas/image-orientation/drawImage-from-blob.tentative.html b/testing/web-platform/tests/html/canvas/element/manual/drawing-images-to-the-canvas/image-orientation/drawImage-from-blob.tentative.html
new file mode 100644
index 0000000000..330b3cbfe5
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/manual/drawing-images-to-the-canvas/image-orientation/drawImage-from-blob.tentative.html
@@ -0,0 +1,37 @@
+
+
+
+
+createImageBitmap and drawImage from a blob with image orientation: from-image
+
+
+
+  
+
+
+  
+
+
\ No newline at end of file
diff --git a/testing/web-platform/tests/html/canvas/element/manual/drawing-images-to-the-canvas/image-orientation/drawImage-from-element-orientation-none-ref.html b/testing/web-platform/tests/html/canvas/element/manual/drawing-images-to-the-canvas/image-orientation/drawImage-from-element-orientation-none-ref.html
new file mode 100644
index 0000000000..b847b9eb73
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/manual/drawing-images-to-the-canvas/image-orientation/drawImage-from-element-orientation-none-ref.html
@@ -0,0 +1,12 @@
+
+
+
+
+reference for drawImage from an element source with image orientation: none
+
+
+
+  
+  
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/manual/drawing-images-to-the-canvas/image-orientation/drawImage-from-element-orientation-none.tentative.html b/testing/web-platform/tests/html/canvas/element/manual/drawing-images-to-the-canvas/image-orientation/drawImage-from-element-orientation-none.tentative.html
new file mode 100644
index 0000000000..61563da738
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/manual/drawing-images-to-the-canvas/image-orientation/drawImage-from-element-orientation-none.tentative.html
@@ -0,0 +1,24 @@
+
+
+
+
+createImageBitmap and drawImage from an element source with image orientation: none
+
+
+
+  
+
+
+  
+  
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/manual/drawing-images-to-the-canvas/image-orientation/drawImage-from-element-ref.html b/testing/web-platform/tests/html/canvas/element/manual/drawing-images-to-the-canvas/image-orientation/drawImage-from-element-ref.html
new file mode 100644
index 0000000000..3f4d1e5ff4
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/manual/drawing-images-to-the-canvas/image-orientation/drawImage-from-element-ref.html
@@ -0,0 +1,12 @@
+
+
+
+
+reference for drawImage from an element source with image orientation: from-image
+
+
+
+  
+  
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/manual/drawing-images-to-the-canvas/image-orientation/drawImage-from-element-swap-width-height-orientation-none-ref.html b/testing/web-platform/tests/html/canvas/element/manual/drawing-images-to-the-canvas/image-orientation/drawImage-from-element-swap-width-height-orientation-none-ref.html
new file mode 100644
index 0000000000..b26154b40a
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/manual/drawing-images-to-the-canvas/image-orientation/drawImage-from-element-swap-width-height-orientation-none-ref.html
@@ -0,0 +1,12 @@
+
+
+
+
+reference drawImage from an element source with image orientation: none
+
+
+
+  
+  
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/manual/drawing-images-to-the-canvas/image-orientation/drawImage-from-element-swap-width-height-orientation-none.tentative.html b/testing/web-platform/tests/html/canvas/element/manual/drawing-images-to-the-canvas/image-orientation/drawImage-from-element-swap-width-height-orientation-none.tentative.html
new file mode 100644
index 0000000000..290d7acf3a
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/manual/drawing-images-to-the-canvas/image-orientation/drawImage-from-element-swap-width-height-orientation-none.tentative.html
@@ -0,0 +1,24 @@
+
+
+
+
+createImageBitmap and drawImage from an element source with image orientation: none
+
+
+
+  
+
+
+  
+  
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/manual/drawing-images-to-the-canvas/image-orientation/drawImage-from-element-swap-width-height-ref.html b/testing/web-platform/tests/html/canvas/element/manual/drawing-images-to-the-canvas/image-orientation/drawImage-from-element-swap-width-height-ref.html
new file mode 100644
index 0000000000..21f0f88b88
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/manual/drawing-images-to-the-canvas/image-orientation/drawImage-from-element-swap-width-height-ref.html
@@ -0,0 +1,12 @@
+
+
+
+
+reference drawImage from an element source with image orientation: from-image
+
+
+
+  
+  
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/manual/drawing-images-to-the-canvas/image-orientation/drawImage-from-element-swap-width-height.tentative.html b/testing/web-platform/tests/html/canvas/element/manual/drawing-images-to-the-canvas/image-orientation/drawImage-from-element-swap-width-height.tentative.html
new file mode 100644
index 0000000000..20d59358b4
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/manual/drawing-images-to-the-canvas/image-orientation/drawImage-from-element-swap-width-height.tentative.html
@@ -0,0 +1,24 @@
+
+
+
+
+createImageBitmap and drawImage from an element source with image orientation: from-image
+
+
+
+  
+
+
+  
+  
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/manual/drawing-images-to-the-canvas/image-orientation/drawImage-from-element.tentative.html b/testing/web-platform/tests/html/canvas/element/manual/drawing-images-to-the-canvas/image-orientation/drawImage-from-element.tentative.html
new file mode 100644
index 0000000000..62cdf20c79
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/manual/drawing-images-to-the-canvas/image-orientation/drawImage-from-element.tentative.html
@@ -0,0 +1,24 @@
+
+
+
+
+createImageBitmap and drawImage from an element source with image orientation: from-image
+
+
+
+  
+
+
+  
+  
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/manual/drawing-images-to-the-canvas/image-orientation/drawImage-with-src-rect-ref.html b/testing/web-platform/tests/html/canvas/element/manual/drawing-images-to-the-canvas/image-orientation/drawImage-with-src-rect-ref.html
new file mode 100644
index 0000000000..19ffcc39c9
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/manual/drawing-images-to-the-canvas/image-orientation/drawImage-with-src-rect-ref.html
@@ -0,0 +1,22 @@
+
+
+
+
+reference for drawImage with image orientation: from-image and a sub-image source rect
+
+  
+
+
+  
+  
+
+
\ No newline at end of file
diff --git a/testing/web-platform/tests/html/canvas/element/manual/drawing-images-to-the-canvas/image-orientation/drawImage-with-src-rect.tentative.html b/testing/web-platform/tests/html/canvas/element/manual/drawing-images-to-the-canvas/image-orientation/drawImage-with-src-rect.tentative.html
new file mode 100644
index 0000000000..d889e39302
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/manual/drawing-images-to-the-canvas/image-orientation/drawImage-with-src-rect.tentative.html
@@ -0,0 +1,25 @@
+
+
+
+
+drawImage with image orientation: from-image and a sub-image source rect
+
+
+
+
+  
+
+
+  
+  
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/manual/drawing-paths-to-the-canvas/canvas_complexshapes_ispointInpath_001.htm b/testing/web-platform/tests/html/canvas/element/manual/drawing-paths-to-the-canvas/canvas_complexshapes_ispointInpath_001.htm
new file mode 100644
index 0000000000..18c3c9afb9
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/manual/drawing-paths-to-the-canvas/canvas_complexshapes_ispointInpath_001.htm
@@ -0,0 +1,31 @@
+
+
+    
+        HTML5 Canvas Test:  isPointInPath() unaffected by the current transformation matrix
+        
+        
+        
+        
+        
+        
+    
+    
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Description: isPointInPath must check the point (x, y) as coordinates unaffected by the current transformation matrix.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+        Browser does not support HTML5 Canvas.
+    
+
diff --git a/testing/web-platform/tests/html/canvas/element/manual/drawing-paths-to-the-canvas/canvas_focus_drawFocusIfNeeded_AAPI_001-manual.html b/testing/web-platform/tests/html/canvas/element/manual/drawing-paths-to-the-canvas/canvas_focus_drawFocusIfNeeded_AAPI_001-manual.html
new file mode 100644
index 0000000000..bf38fa68b7
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/manual/drawing-paths-to-the-canvas/canvas_focus_drawFocusIfNeeded_AAPI_001-manual.html
@@ -0,0 +1,50 @@
+
+  
+    
+    drawFocusIfNeeded() - AAPI test
+    
+    
+
+  
+  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Description
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              This manual test can be used to verify that drawFocusIfNeeded actually updates the accessible location information (i.e. UIAutomation's CurrentBoundingRectangle) in the Accessibility API.  To perform this test, you will need an accessibility API inspector.  To perform this test, use the tab key to move from the first focusable element to through to the fourth.  This test passes if the first parameter of the bounding rectangle increases by 100 when focus is moved from the gray square to the orange square.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              First focusable element
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+    
+      Second focusable element
+      Third focusable element
+    
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Fourth focusable element
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+    
+  
+
\ No newline at end of file
diff --git a/testing/web-platform/tests/html/canvas/element/manual/drawing-paths-to-the-canvas/drawFocusIfNeeded_001.html b/testing/web-platform/tests/html/canvas/element/manual/drawing-paths-to-the-canvas/drawFocusIfNeeded_001.html
new file mode 100644
index 0000000000..6daf32a2af
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/manual/drawing-paths-to-the-canvas/drawFocusIfNeeded_001.html
@@ -0,0 +1,66 @@
+
+
+  
+    drawFocusIfNeeded()
+    
+    
+    
+    
+  
+  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Description
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              This test uses drawFocusIfNeeded to draw a focus ring in the canvas, then compare the ImageData before and after the invocation of the method to check that the focus ring was actually drawn.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Before:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+      
+      
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              After:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+      
+        
+      
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+    
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+  
+
diff --git a/testing/web-platform/tests/html/canvas/element/manual/drawing-paths-to-the-canvas/drawFocusIfNeeded_002.html b/testing/web-platform/tests/html/canvas/element/manual/drawing-paths-to-the-canvas/drawFocusIfNeeded_002.html
new file mode 100644
index 0000000000..ec0a4ef427
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/manual/drawing-paths-to-the-canvas/drawFocusIfNeeded_002.html
@@ -0,0 +1,68 @@
+
+
+  
+    drawFocusIfNeeded()
+    
+    
+    
+    
+  
+  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Description
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              This test uses drawFocusIfNeeded does nothing if the element is not in focus but comparing ImageData from before and after.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Before:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+      
+      
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              After:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+      
+        
+      
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+    
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+  
+
diff --git a/testing/web-platform/tests/html/canvas/element/manual/drawing-paths-to-the-canvas/drawFocusIfNeeded_003.html b/testing/web-platform/tests/html/canvas/element/manual/drawing-paths-to-the-canvas/drawFocusIfNeeded_003.html
new file mode 100644
index 0000000000..b62c0641f5
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/manual/drawing-paths-to-the-canvas/drawFocusIfNeeded_003.html
@@ -0,0 +1,69 @@
+
+
+  
+    drawFocusIfNeeded()
+    
+    
+    
+    
+  
+  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Description
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              This test uses drawFocusIfNeeded does nothing if the element is not a descendant but comparing ImageData from before and after.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Before:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+      
+        
+      
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              After:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+      
+      
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+    
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+  
+
diff --git a/testing/web-platform/tests/html/canvas/element/manual/drawing-paths-to-the-canvas/drawFocusIfNeeded_004.html b/testing/web-platform/tests/html/canvas/element/manual/drawing-paths-to-the-canvas/drawFocusIfNeeded_004.html
new file mode 100644
index 0000000000..326db0daa8
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/manual/drawing-paths-to-the-canvas/drawFocusIfNeeded_004.html
@@ -0,0 +1,88 @@
+
+
+  
+    drawFocusIfNeeded()
+    
+    
+    
+    
+  
+  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Description
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              This test uses drawFocusIfNeeded to draw a complex path focus then compare ImageData from before and after.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Before:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+      
+      
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              After:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+      
+        
+      
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+    
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+  
+
diff --git a/testing/web-platform/tests/html/canvas/element/manual/drawing-paths-to-the-canvas/drawFocusIfNeeded_005.html b/testing/web-platform/tests/html/canvas/element/manual/drawing-paths-to-the-canvas/drawFocusIfNeeded_005.html
new file mode 100644
index 0000000000..96a4e3fd5d
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/manual/drawing-paths-to-the-canvas/drawFocusIfNeeded_005.html
@@ -0,0 +1,88 @@
+
+
+  
+    drawFocusIfNeeded()
+    
+    
+    
+    
+  
+  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Description
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              This test uses drawFocusIfNeeded to draw a complex path focus then compare ImageData from before and after.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Before:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+      
+      
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              After:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+      
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              This is text.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+    
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+  
+
diff --git a/testing/web-platform/tests/html/canvas/element/manual/drawing-text-to-the-canvas/canvas.2d.disconnected-ref.html b/testing/web-platform/tests/html/canvas/element/manual/drawing-text-to-the-canvas/canvas.2d.disconnected-ref.html
new file mode 100644
index 0000000000..b36d29b97f
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/manual/drawing-text-to-the-canvas/canvas.2d.disconnected-ref.html
@@ -0,0 +1,16 @@
+
+
+HTML Canvas reference
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/manual/drawing-text-to-the-canvas/canvas.2d.disconnected.html b/testing/web-platform/tests/html/canvas/element/manual/drawing-text-to-the-canvas/canvas.2d.disconnected.html
new file mode 100644
index 0000000000..a1715f6663
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/manual/drawing-text-to-the-canvas/canvas.2d.disconnected.html
@@ -0,0 +1,24 @@
+
+
+HTML Canvas testcase: canvas element not in document
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/manual/drawing-text-to-the-canvas/canvas.2d.fontStretch-ref.html b/testing/web-platform/tests/html/canvas/element/manual/drawing-text-to-the-canvas/canvas.2d.fontStretch-ref.html
new file mode 100644
index 0000000000..4b3b28baf9
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/manual/drawing-text-to-the-canvas/canvas.2d.fontStretch-ref.html
@@ -0,0 +1,30 @@
+
+Canvas test: 2d.text.fontStretch
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
\ No newline at end of file
diff --git a/testing/web-platform/tests/html/canvas/element/manual/drawing-text-to-the-canvas/canvas.2d.fontStretch.condensed.html b/testing/web-platform/tests/html/canvas/element/manual/drawing-text-to-the-canvas/canvas.2d.fontStretch.condensed.html
new file mode 100644
index 0000000000..2bda32082e
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/manual/drawing-text-to-the-canvas/canvas.2d.fontStretch.condensed.html
@@ -0,0 +1,37 @@
+
+Canvas test: 2d.text.fontStretch
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
\ No newline at end of file
diff --git a/testing/web-platform/tests/html/canvas/element/manual/drawing-text-to-the-canvas/canvas.2d.fontStretch.expanded.html b/testing/web-platform/tests/html/canvas/element/manual/drawing-text-to-the-canvas/canvas.2d.fontStretch.expanded.html
new file mode 100644
index 0000000000..c679ccb57b
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/manual/drawing-text-to-the-canvas/canvas.2d.fontStretch.expanded.html
@@ -0,0 +1,37 @@
+
+Canvas test: 2d.text.fontStretch
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
\ No newline at end of file
diff --git a/testing/web-platform/tests/html/canvas/element/manual/drawing-text-to-the-canvas/canvas.2d.fontStretch.extra-condensed.html b/testing/web-platform/tests/html/canvas/element/manual/drawing-text-to-the-canvas/canvas.2d.fontStretch.extra-condensed.html
new file mode 100644
index 0000000000..a3a18c05c6
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/manual/drawing-text-to-the-canvas/canvas.2d.fontStretch.extra-condensed.html
@@ -0,0 +1,37 @@
+
+Canvas test: 2d.text.fontStretch
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
\ No newline at end of file
diff --git a/testing/web-platform/tests/html/canvas/element/manual/drawing-text-to-the-canvas/canvas.2d.fontStretch.extra-expanded.html b/testing/web-platform/tests/html/canvas/element/manual/drawing-text-to-the-canvas/canvas.2d.fontStretch.extra-expanded.html
new file mode 100644
index 0000000000..4f1bf6838d
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/manual/drawing-text-to-the-canvas/canvas.2d.fontStretch.extra-expanded.html
@@ -0,0 +1,37 @@
+
+Canvas test: 2d.text.fontStretch
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
\ No newline at end of file
diff --git a/testing/web-platform/tests/html/canvas/element/manual/drawing-text-to-the-canvas/canvas.2d.fontStretch.normal.html b/testing/web-platform/tests/html/canvas/element/manual/drawing-text-to-the-canvas/canvas.2d.fontStretch.normal.html
new file mode 100644
index 0000000000..b60d25f579
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/manual/drawing-text-to-the-canvas/canvas.2d.fontStretch.normal.html
@@ -0,0 +1,36 @@
+
+Canvas test: 2d.text.fontStretch
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
\ No newline at end of file
diff --git a/testing/web-platform/tests/html/canvas/element/manual/drawing-text-to-the-canvas/canvas.2d.fontStretch.semi-condensed.html b/testing/web-platform/tests/html/canvas/element/manual/drawing-text-to-the-canvas/canvas.2d.fontStretch.semi-condensed.html
new file mode 100644
index 0000000000..c356ee176e
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/manual/drawing-text-to-the-canvas/canvas.2d.fontStretch.semi-condensed.html
@@ -0,0 +1,37 @@
+
+Canvas test: 2d.text.fontStretch
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
\ No newline at end of file
diff --git a/testing/web-platform/tests/html/canvas/element/manual/drawing-text-to-the-canvas/canvas.2d.fontStretch.semi-expanded.html b/testing/web-platform/tests/html/canvas/element/manual/drawing-text-to-the-canvas/canvas.2d.fontStretch.semi-expanded.html
new file mode 100644
index 0000000000..bc9bb2bfa5
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/manual/drawing-text-to-the-canvas/canvas.2d.fontStretch.semi-expanded.html
@@ -0,0 +1,37 @@
+
+Canvas test: 2d.text.fontStretch
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
\ No newline at end of file
diff --git a/testing/web-platform/tests/html/canvas/element/manual/drawing-text-to-the-canvas/canvas.2d.fontStretch.ultra-condensed.html b/testing/web-platform/tests/html/canvas/element/manual/drawing-text-to-the-canvas/canvas.2d.fontStretch.ultra-condensed.html
new file mode 100644
index 0000000000..62af778092
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/manual/drawing-text-to-the-canvas/canvas.2d.fontStretch.ultra-condensed.html
@@ -0,0 +1,37 @@
+
+Canvas test: 2d.text.fontStretch
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
\ No newline at end of file
diff --git a/testing/web-platform/tests/html/canvas/element/manual/drawing-text-to-the-canvas/canvas.2d.fontStretch.ultra-expanded.html b/testing/web-platform/tests/html/canvas/element/manual/drawing-text-to-the-canvas/canvas.2d.fontStretch.ultra-expanded.html
new file mode 100644
index 0000000000..4faf47b074
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/manual/drawing-text-to-the-canvas/canvas.2d.fontStretch.ultra-expanded.html
@@ -0,0 +1,37 @@
+
+Canvas test: 2d.text.fontStretch
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
\ No newline at end of file
diff --git a/testing/web-platform/tests/html/canvas/element/manual/fill-and-stroke-styles/2d.fillStyle.parse.current.notrendered.html b/testing/web-platform/tests/html/canvas/element/manual/fill-and-stroke-styles/2d.fillStyle.parse.current.notrendered.html
new file mode 100644
index 0000000000..37701bacee
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/manual/fill-and-stroke-styles/2d.fillStyle.parse.current.notrendered.html
@@ -0,0 +1,31 @@
+
+Canvas test: 2d.fillStyle.parse.current.notrendered
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.fillStyle.parse.current.basic
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              currentColor is computed from the canvas element
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
diff --git a/testing/web-platform/tests/html/canvas/element/manual/fill-and-stroke-styles/canvas_colorsandstyles_createlineargradient_001.htm b/testing/web-platform/tests/html/canvas/element/manual/fill-and-stroke-styles/canvas_colorsandstyles_createlineargradient_001.htm
new file mode 100644
index 0000000000..5b77c98de7
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/manual/fill-and-stroke-styles/canvas_colorsandstyles_createlineargradient_001.htm
@@ -0,0 +1,59 @@
+
+
+    
+        HTML5 Canvas Test:  createlinearGradient() with two points same
+        
+        
+        
+        
+        
+        
+    
+    
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                Description: If the two points in a linear gradient have identical x,y coordinates, the canvas must paint nothing.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                Test passes if there is one left-to-right, green-to-blue linear gradient seen on the page and no red is seen on the page.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+        Browser does not support HTML5 Canvas.
+    
+
diff --git a/testing/web-platform/tests/html/canvas/element/manual/fill-and-stroke-styles/conic-gradient-expected.html b/testing/web-platform/tests/html/canvas/element/manual/fill-and-stroke-styles/conic-gradient-expected.html
new file mode 100644
index 0000000000..f347abc9d3
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/manual/fill-and-stroke-styles/conic-gradient-expected.html
@@ -0,0 +1,22 @@
+
+
+
+  
+  
+
+
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
+
\ No newline at end of file
diff --git a/testing/web-platform/tests/html/canvas/element/manual/fill-and-stroke-styles/conic-gradient-rotation-expected.html b/testing/web-platform/tests/html/canvas/element/manual/fill-and-stroke-styles/conic-gradient-rotation-expected.html
new file mode 100644
index 0000000000..68d750f462
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/manual/fill-and-stroke-styles/conic-gradient-rotation-expected.html
@@ -0,0 +1,22 @@
+
+
+
+  
+  
+
+
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/manual/fill-and-stroke-styles/conic-gradient-rotation.html b/testing/web-platform/tests/html/canvas/element/manual/fill-and-stroke-styles/conic-gradient-rotation.html
new file mode 100644
index 0000000000..e8b213b3d8
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/manual/fill-and-stroke-styles/conic-gradient-rotation.html
@@ -0,0 +1,30 @@
+
+
+
+  Conic gradient
+  
+
+
+  
+  
+
+
+
\ No newline at end of file
diff --git a/testing/web-platform/tests/html/canvas/element/manual/fill-and-stroke-styles/conic-gradient.html b/testing/web-platform/tests/html/canvas/element/manual/fill-and-stroke-styles/conic-gradient.html
new file mode 100644
index 0000000000..73fcf6c23e
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/manual/fill-and-stroke-styles/conic-gradient.html
@@ -0,0 +1,30 @@
+
+
+
+  Conic gradient
+  
+
+
+  
+  
+
+
+
\ No newline at end of file
diff --git a/testing/web-platform/tests/html/canvas/element/manual/filters/canvas-fillStyle-opacity.html b/testing/web-platform/tests/html/canvas/element/manual/filters/canvas-fillStyle-opacity.html
new file mode 100644
index 0000000000..b5f9d98b89
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/manual/filters/canvas-fillStyle-opacity.html
@@ -0,0 +1,27 @@
+
+
+
+
+  
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/manual/filters/canvas-filter-opacity-alpha-and-fillStyle-expected.html b/testing/web-platform/tests/html/canvas/element/manual/filters/canvas-filter-opacity-alpha-and-fillStyle-expected.html
new file mode 100644
index 0000000000..f87794f0b7
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/manual/filters/canvas-filter-opacity-alpha-and-fillStyle-expected.html
@@ -0,0 +1,41 @@
+
+
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/manual/filters/canvas-filter-opacity-alpha-and-fillStyle.html b/testing/web-platform/tests/html/canvas/element/manual/filters/canvas-filter-opacity-alpha-and-fillStyle.html
new file mode 100644
index 0000000000..24c97d62ec
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/manual/filters/canvas-filter-opacity-alpha-and-fillStyle.html
@@ -0,0 +1,35 @@
+
+
+
+
+  
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/manual/filters/canvas-filter-opacity.html b/testing/web-platform/tests/html/canvas/element/manual/filters/canvas-filter-opacity.html
new file mode 100644
index 0000000000..cb2fc018af
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/manual/filters/canvas-filter-opacity.html
@@ -0,0 +1,35 @@
+
+
+
+
+  
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/manual/filters/canvas-filter-shadow-and-properties-blur-expected.html b/testing/web-platform/tests/html/canvas/element/manual/filters/canvas-filter-shadow-and-properties-blur-expected.html
new file mode 100644
index 0000000000..1f218b4bd2
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/manual/filters/canvas-filter-shadow-and-properties-blur-expected.html
@@ -0,0 +1,33 @@
+
+
+  
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/manual/filters/canvas-filter-shadow-and-properties-blur.html b/testing/web-platform/tests/html/canvas/element/manual/filters/canvas-filter-shadow-and-properties-blur.html
new file mode 100644
index 0000000000..ab3699906d
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/manual/filters/canvas-filter-shadow-and-properties-blur.html
@@ -0,0 +1,29 @@
+
+
+
+
+  
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/manual/filters/canvas-filter-shadow-and-properties-expected.html b/testing/web-platform/tests/html/canvas/element/manual/filters/canvas-filter-shadow-and-properties-expected.html
new file mode 100644
index 0000000000..294a219b70
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/manual/filters/canvas-filter-shadow-and-properties-expected.html
@@ -0,0 +1,21 @@
+
+
+  
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/manual/filters/canvas-filter-shadow-and-properties.html b/testing/web-platform/tests/html/canvas/element/manual/filters/canvas-filter-shadow-and-properties.html
new file mode 100644
index 0000000000..2057b95c3e
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/manual/filters/canvas-filter-shadow-and-properties.html
@@ -0,0 +1,20 @@
+
+
+
+  
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/manual/filters/canvas-filter-shadow-expected.html b/testing/web-platform/tests/html/canvas/element/manual/filters/canvas-filter-shadow-expected.html
new file mode 100644
index 0000000000..04bc6392cc
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/manual/filters/canvas-filter-shadow-expected.html
@@ -0,0 +1,16 @@
+
+
+  
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/manual/filters/canvas-filter-shadow.html b/testing/web-platform/tests/html/canvas/element/manual/filters/canvas-filter-shadow.html
new file mode 100644
index 0000000000..ddc6c89ee5
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/manual/filters/canvas-filter-shadow.html
@@ -0,0 +1,15 @@
+
+
+
+  
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/manual/filters/canvas-globalAlpha.html b/testing/web-platform/tests/html/canvas/element/manual/filters/canvas-globalAlpha.html
new file mode 100644
index 0000000000..6d7bbcd03d
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/manual/filters/canvas-globalAlpha.html
@@ -0,0 +1,35 @@
+
+
+
+
+  
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/manual/filters/canvas-opacity-blend-modes-expected.html b/testing/web-platform/tests/html/canvas/element/manual/filters/canvas-opacity-blend-modes-expected.html
new file mode 100644
index 0000000000..3eb7581981
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/manual/filters/canvas-opacity-blend-modes-expected.html
@@ -0,0 +1,48 @@
+
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/manual/filters/canvas-opacity-blend-modes.html b/testing/web-platform/tests/html/canvas/element/manual/filters/canvas-opacity-blend-modes.html
new file mode 100644
index 0000000000..a2d513eb62
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/manual/filters/canvas-opacity-blend-modes.html
@@ -0,0 +1,50 @@
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/manual/filters/canvas-opacity-expected.html b/testing/web-platform/tests/html/canvas/element/manual/filters/canvas-opacity-expected.html
new file mode 100644
index 0000000000..caf6b53ce3
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/manual/filters/canvas-opacity-expected.html
@@ -0,0 +1,66 @@
+
+
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/manual/filters/tentative/canvas-filter-object-blur-expected.html b/testing/web-platform/tests/html/canvas/element/manual/filters/tentative/canvas-filter-object-blur-expected.html
new file mode 100644
index 0000000000..ae8911b2de
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/manual/filters/tentative/canvas-filter-object-blur-expected.html
@@ -0,0 +1,19 @@
+
+  
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/manual/filters/tentative/canvas-filter-object-blur.html b/testing/web-platform/tests/html/canvas/element/manual/filters/tentative/canvas-filter-object-blur.html
new file mode 100644
index 0000000000..957d73de2f
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/manual/filters/tentative/canvas-filter-object-blur.html
@@ -0,0 +1,24 @@
+
+    
+
+
+  
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/manual/filters/tentative/canvas-filter-object-component-transfer-expected.html b/testing/web-platform/tests/html/canvas/element/manual/filters/tentative/canvas-filter-object-component-transfer-expected.html
new file mode 100644
index 0000000000..a2351cbcf2
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/manual/filters/tentative/canvas-filter-object-component-transfer-expected.html
@@ -0,0 +1,65 @@
+
+  
+  
+    
+      
+        
+          
+          
+          
+          
+        
+      
+      
+        
+          
+          
+          
+        
+      
+      
+        
+          
+          
+          
+        
+      
+      
+        
+          
+          
+          
+        
+      
+      
+        
+          
+          
+          
+        
+      
+    
+  
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/manual/filters/tentative/canvas-filter-object-component-transfer.html b/testing/web-platform/tests/html/canvas/element/manual/filters/tentative/canvas-filter-object-component-transfer.html
new file mode 100644
index 0000000000..76da185d13
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/manual/filters/tentative/canvas-filter-object-component-transfer.html
@@ -0,0 +1,62 @@
+
+    
+
+
+  
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/manual/filters/tentative/canvas-filter-object-convolve-matrix-expected.html b/testing/web-platform/tests/html/canvas/element/manual/filters/tentative/canvas-filter-object-convolve-matrix-expected.html
new file mode 100644
index 0000000000..896a93542e
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/manual/filters/tentative/canvas-filter-object-convolve-matrix-expected.html
@@ -0,0 +1,77 @@
+
+
+
+  
+    
+      
+    
+    
+      
+    
+    
+      
+    
+    
+      
+    
+    
+      
+    
+    
+      
+    
+  
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/manual/filters/tentative/canvas-filter-object-convolve-matrix.html b/testing/web-platform/tests/html/canvas/element/manual/filters/tentative/canvas-filter-object-convolve-matrix.html
new file mode 100644
index 0000000000..c02f77b7f9
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/manual/filters/tentative/canvas-filter-object-convolve-matrix.html
@@ -0,0 +1,60 @@
+
+
+    
+    
+
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/manual/filters/tentative/canvas-filter-object-turbulence-expected.html b/testing/web-platform/tests/html/canvas/element/manual/filters/tentative/canvas-filter-object-turbulence-expected.html
new file mode 100644
index 0000000000..ff0eebe2e0
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/manual/filters/tentative/canvas-filter-object-turbulence-expected.html
@@ -0,0 +1,37 @@
+
+  >
+    
+      
+    
+    
+      
+    
+    
+      
+    
+    
+      
+    
+    
+      
+    
+    
+      
+    
+    
+      
+    
+    
+      
+    
+
+
\ No newline at end of file
diff --git a/testing/web-platform/tests/html/canvas/element/manual/filters/tentative/canvas-filter-object-turbulence.html b/testing/web-platform/tests/html/canvas/element/manual/filters/tentative/canvas-filter-object-turbulence.html
new file mode 100644
index 0000000000..8e1eaf54bc
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/manual/filters/tentative/canvas-filter-object-turbulence.html
@@ -0,0 +1,26 @@
+
+    
+
+
+
+
\ No newline at end of file
diff --git a/testing/web-platform/tests/html/canvas/element/manual/filters/tentative/idl-conversions/canvas-filter-boolean-conversion-expected.html b/testing/web-platform/tests/html/canvas/element/manual/filters/tentative/idl-conversions/canvas-filter-boolean-conversion-expected.html
new file mode 100644
index 0000000000..f79cdd1eeb
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/manual/filters/tentative/idl-conversions/canvas-filter-boolean-conversion-expected.html
@@ -0,0 +1,30 @@
+
+  
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/manual/filters/tentative/idl-conversions/canvas-filter-boolean-conversion.html b/testing/web-platform/tests/html/canvas/element/manual/filters/tentative/idl-conversions/canvas-filter-boolean-conversion.html
new file mode 100644
index 0000000000..16c40e4162
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/manual/filters/tentative/idl-conversions/canvas-filter-boolean-conversion.html
@@ -0,0 +1,58 @@
+
+    
+
+
+  
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/manual/filters/tentative/idl-conversions/canvas-filter-long-conversion-expected.html b/testing/web-platform/tests/html/canvas/element/manual/filters/tentative/idl-conversions/canvas-filter-long-conversion-expected.html
new file mode 100644
index 0000000000..8b4262ed04
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/manual/filters/tentative/idl-conversions/canvas-filter-long-conversion-expected.html
@@ -0,0 +1,26 @@
+
+  
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/manual/filters/tentative/idl-conversions/canvas-filter-long-conversion.html b/testing/web-platform/tests/html/canvas/element/manual/filters/tentative/idl-conversions/canvas-filter-long-conversion.html
new file mode 100644
index 0000000000..c742633224
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/manual/filters/tentative/idl-conversions/canvas-filter-long-conversion.html
@@ -0,0 +1,35 @@
+
+    
+
+
+  
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/manual/filters/tentative/idl-conversions/canvas-filter-sequence-conversion.html b/testing/web-platform/tests/html/canvas/element/manual/filters/tentative/idl-conversions/canvas-filter-sequence-conversion.html
new file mode 100644
index 0000000000..8b1a5cdf60
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/manual/filters/tentative/idl-conversions/canvas-filter-sequence-conversion.html
@@ -0,0 +1,55 @@
+
+Canvas test: canvas-filter-sequence-conversion
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                canvas-filter-sequence-conversion
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                Test converting types into sequences
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
diff --git a/testing/web-platform/tests/html/canvas/element/manual/image-smoothing/imagesmoothing.html b/testing/web-platform/tests/html/canvas/element/manual/image-smoothing/imagesmoothing.html
new file mode 100644
index 0000000000..1a86a8f201
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/manual/image-smoothing/imagesmoothing.html
@@ -0,0 +1,119 @@
+
+
+CanvasRenderingContext2D imageSmoothingEnabled test
+
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/manual/imagebitmap/canvas-ImageBitmap-close.html b/testing/web-platform/tests/html/canvas/element/manual/imagebitmap/canvas-ImageBitmap-close.html
new file mode 100644
index 0000000000..fca8274528
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/manual/imagebitmap/canvas-ImageBitmap-close.html
@@ -0,0 +1,89 @@
+
+
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Tests that the close method of ImageBitmap does dispose the image data.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/manual/imagebitmap/canvas-createImageBitmap-resize.html b/testing/web-platform/tests/html/canvas/element/manual/imagebitmap/canvas-createImageBitmap-resize.html
new file mode 100644
index 0000000000..782c7e130c
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/manual/imagebitmap/canvas-createImageBitmap-resize.html
@@ -0,0 +1,170 @@
+
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/manual/imagebitmap/canvas-createImageBitmap-video-resize.html b/testing/web-platform/tests/html/canvas/element/manual/imagebitmap/canvas-createImageBitmap-video-resize.html
new file mode 100644
index 0000000000..c7555405a8
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/manual/imagebitmap/canvas-createImageBitmap-video-resize.html
@@ -0,0 +1,61 @@
+
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/manual/imagebitmap/common.sub.js b/testing/web-platform/tests/html/canvas/element/manual/imagebitmap/common.sub.js
new file mode 100644
index 0000000000..1889035202
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/manual/imagebitmap/common.sub.js
@@ -0,0 +1,168 @@
+function makeCanvas() {
+    return new Promise(resolve => {
+        var testCanvas = document.createElement("canvas");
+        testCanvas.width = 20;
+        testCanvas.height = 20;
+        var testCtx = testCanvas.getContext("2d");
+        testCtx.fillStyle = "rgb(255, 0, 0)";
+        testCtx.fillRect(0, 0, 10, 10);
+        testCtx.fillStyle = "rgb(0, 255, 0)";
+        testCtx.fillRect(10, 0, 10, 10);
+        testCtx.fillStyle = "rgb(0, 0, 255)";
+        testCtx.fillRect(0, 10, 10, 10);
+        testCtx.fillStyle = "rgb(0, 0, 0)";
+        testCtx.fillRect(10, 10, 10, 10);
+        resolve(testCanvas);
+    });
+}
+
+function makeOffscreenCanvas() {
+    return new Promise(resolve => {
+        let canvas = new OffscreenCanvas(20, 20);
+        var testCtx = canvas.getContext("2d");
+        testCtx.fillStyle = "rgb(255, 0, 0)";
+        testCtx.fillRect(0, 0, 10, 10);
+        testCtx.fillStyle = "rgb(0, 255, 0)";
+        testCtx.fillRect(10, 0, 10, 10);
+        testCtx.fillStyle = "rgb(0, 0, 255)";
+        testCtx.fillRect(0, 10, 10, 10);
+        testCtx.fillStyle = "rgb(0, 0, 0)";
+        testCtx.fillRect(10, 10, 10, 10);
+        resolve(canvas);
+    });
+}
+
+var imageBitmapVideoPromise = new Promise(function(resolve, reject) {
+    var video = document.createElement("video");
+    video.oncanplaythrough = function() {
+        resolve(video);
+    };
+    video.onerror = reject;
+
+    // preload=auto is required to ensure a frame is available once
+    // canplaythrough is fired. The default of preload=metadata does not
+    // gaurantee this.
+    video.preload = "auto";
+    video.src = getVideoURI("/images/pattern");
+
+    // Prevent WebKit from garbage collecting event handlers.
+    window._video = video;
+});
+
+function makeVideo() {
+    return imageBitmapVideoPromise;
+}
+
+var imageBitmapDataUrlVideoPromise = fetch(getVideoURI("/images/pattern"))
+    .then(response => Promise.all([response.headers.get("Content-Type"), response.arrayBuffer()]))
+    .then(([type, data]) => {
+        return new Promise(function(resolve, reject) {
+            var video = document.createElement("video");
+            video.oncanplaythrough = function() {
+                resolve(video);
+            };
+            video.onerror = reject;
+
+            var encoded = btoa(String.fromCodePoint(...new Uint8Array(data)));
+            var dataUrl = `data:${type};base64,${encoded}`;
+
+            // preload=auto is required to ensure a frame is available once
+            // canplaythrough is fired. The default of preload=metadata does not
+            // gaurantee this.
+            video.preload = "auto";
+            video.src = dataUrl;
+
+            // Prevent WebKit from garbage collecting event handlers.
+            window._dataVideo = video;
+        });
+    });
+
+function makeDataUrlVideo() {
+    return imageBitmapDataUrlVideoPromise;
+}
+
+function makeMakeHTMLImage(src) {
+    return function() {
+        return new Promise((resolve, reject) => {
+            var img = new Image();
+            img.onload = function() {
+                resolve(img);
+            };
+            img.onerror = reject;
+            img.src = src;
+        });
+    }
+}
+
+function makeMakeSVGImage(src) {
+    return function() {
+        return new Promise((resolve, reject) => {
+            var image = document.createElementNS("http://www.w3.org/2000/svg", "image");
+            image.onload = () => resolve(image);
+            image.onerror = reject;
+            image.setAttribute("externalResourcesRequired", "true");
+            image.setAttributeNS("http://www.w3.org/1999/xlink", 'xlink:href', src);
+            document.body.appendChild(image);
+        });
+    }
+}
+
+function makeImageData() {
+    return new Promise(function(resolve, reject) {
+        var width = 20, height = 20;
+        var imgData = new ImageData(width, height);
+        for (var i = 0; i < width * height * 4; i += 4) {
+            imgData.data[i] = 0;
+            imgData.data[i + 1] = 0;
+            imgData.data[i + 2] = 0;
+            imgData.data[i + 3] = 255; //alpha channel: 255
+        }
+        var halfWidth = width / 2;
+        var halfHeight = height / 2;
+        // initialize to R, G, B, Black, with each one 10*10 pixels
+        for (var i = 0; i < halfHeight; i++)
+            for (var j = 0; j < halfWidth; j++)
+                imgData.data[i * width * 4 + j * 4] = 255;
+        for (var i = 0; i < halfHeight; i++)
+            for (var j = halfWidth; j < width; j++)
+                imgData.data[i * width * 4 + j * 4 + 1] = 255;
+        for (var i = halfHeight; i < height; i++)
+            for (var j = 0; j < halfWidth; j++)
+                imgData.data[i * width * 4 + j * 4 + 2] = 255;
+        resolve(imgData);
+    });
+}
+
+function makeImageBitmap() {
+    return makeCanvas().then(canvas => {
+        return createImageBitmap(canvas);
+    });
+}
+
+function makeBlob(src) {
+    return function () {
+        return new Promise(function(resolve, reject) {
+            var xhr = new XMLHttpRequest();
+            xhr.open("GET", src);
+            xhr.responseType = 'blob';
+            xhr.send();
+            xhr.onload = function() {
+                resolve(xhr.response);
+            };
+        });
+    }
+}
+
+var imageSourceTypes = [
+    { name: 'an HTMLCanvasElement', factory: makeCanvas },
+    { name: 'an HTMLVideoElement',  factory: makeVideo },
+    { name: 'an HTMLVideoElement from a data URL', factory: makeDataUrlVideo },
+    { name: 'a bitmap HTMLImageElement', factory: makeMakeHTMLImage("/images/pattern.png") },
+    { name: 'a vector HTMLImageElement', factory: makeMakeHTMLImage("/images/pattern.svg") },
+    { name: 'a bitmap SVGImageElement', factory: makeMakeSVGImage("/images/pattern.png") },
+    { name: 'a vector SVGImageElement', factory: makeMakeSVGImage("/images/pattern.svg") },
+    { name: 'an OffscreenCanvas',   factory: makeOffscreenCanvas },
+    { name: 'an ImageData',         factory: makeImageData },
+    { name: 'an ImageBitmap',       factory: makeImageBitmap },
+    { name: 'a Blob',               factory: makeBlob("/images/pattern.png") },
+];
diff --git a/testing/web-platform/tests/html/canvas/element/manual/imagebitmap/createImageBitmap-blob-invalidtype.html b/testing/web-platform/tests/html/canvas/element/manual/imagebitmap/createImageBitmap-blob-invalidtype.html
new file mode 100644
index 0000000000..23af96408a
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/manual/imagebitmap/createImageBitmap-blob-invalidtype.html
@@ -0,0 +1,27 @@
+
+
+createImageBitmap: blob with wrong mime type
+
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/manual/imagebitmap/createImageBitmap-bounds.html b/testing/web-platform/tests/html/canvas/element/manual/imagebitmap/createImageBitmap-bounds.html
new file mode 100644
index 0000000000..a2dcf0cc0b
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/manual/imagebitmap/createImageBitmap-bounds.html
@@ -0,0 +1,67 @@
+
+
+createImageBitmap: clipping to the bitmap
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
diff --git a/testing/web-platform/tests/html/canvas/element/manual/imagebitmap/createImageBitmap-colorSpaceConversion.html b/testing/web-platform/tests/html/canvas/element/manual/imagebitmap/createImageBitmap-colorSpaceConversion.html
new file mode 100644
index 0000000000..2ddf3648f5
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/manual/imagebitmap/createImageBitmap-colorSpaceConversion.html
@@ -0,0 +1,50 @@
+
+
+Test colorSpaceConversion option for createImageBitmap
+
+
+
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/manual/imagebitmap/createImageBitmap-drawImage-closed.html b/testing/web-platform/tests/html/canvas/element/manual/imagebitmap/createImageBitmap-drawImage-closed.html
new file mode 100644
index 0000000000..3b8644cff5
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/manual/imagebitmap/createImageBitmap-drawImage-closed.html
@@ -0,0 +1,27 @@
+
+
+attempt to draw a closed ImageBitmap to a 2d canvas throws INVALID_STATE_ERR
+
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/manual/imagebitmap/createImageBitmap-drawImage.html b/testing/web-platform/tests/html/canvas/element/manual/imagebitmap/createImageBitmap-drawImage.html
new file mode 100644
index 0000000000..5b5698813a
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/manual/imagebitmap/createImageBitmap-drawImage.html
@@ -0,0 +1,87 @@
+
+
+createImageBitmap + drawImage test
+
+
+
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/manual/imagebitmap/createImageBitmap-exif-orientation.html b/testing/web-platform/tests/html/canvas/element/manual/imagebitmap/createImageBitmap-exif-orientation.html
new file mode 100644
index 0000000000..8b2a33e85b
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/manual/imagebitmap/createImageBitmap-exif-orientation.html
@@ -0,0 +1,121 @@
+
+Test that createImageBitmap honors EXIF orientation
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/manual/imagebitmap/createImageBitmap-exif-orientation_none.html b/testing/web-platform/tests/html/canvas/element/manual/imagebitmap/createImageBitmap-exif-orientation_none.html
new file mode 100644
index 0000000000..807925b88a
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/manual/imagebitmap/createImageBitmap-exif-orientation_none.html
@@ -0,0 +1,61 @@
+
+Test that createImageBitmap honors EXIF orientation
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/manual/imagebitmap/createImageBitmap-flipY.html b/testing/web-platform/tests/html/canvas/element/manual/imagebitmap/createImageBitmap-flipY.html
new file mode 100644
index 0000000000..9b0d2dfb79
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/manual/imagebitmap/createImageBitmap-flipY.html
@@ -0,0 +1,73 @@
+
+
+createImageBitmap + drawImage test
+
+
+
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/manual/imagebitmap/createImageBitmap-in-worker-transfer.html b/testing/web-platform/tests/html/canvas/element/manual/imagebitmap/createImageBitmap-in-worker-transfer.html
new file mode 100644
index 0000000000..727a8a4978
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/manual/imagebitmap/createImageBitmap-in-worker-transfer.html
@@ -0,0 +1,20 @@
+
+
+createImageBitmap in worker and transfer
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
diff --git a/testing/web-platform/tests/html/canvas/element/manual/imagebitmap/createImageBitmap-invalid-args.html b/testing/web-platform/tests/html/canvas/element/manual/imagebitmap/createImageBitmap-invalid-args.html
new file mode 100644
index 0000000000..3cae3523ef
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/manual/imagebitmap/createImageBitmap-invalid-args.html
@@ -0,0 +1,239 @@
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/manual/imagebitmap/createImageBitmap-origin.sub.html b/testing/web-platform/tests/html/canvas/element/manual/imagebitmap/createImageBitmap-origin.sub.html
new file mode 100644
index 0000000000..ae3d23cfbc
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/manual/imagebitmap/createImageBitmap-origin.sub.html
@@ -0,0 +1,47 @@
+
+
+createImageBitmap: origin-clean flag
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
diff --git a/testing/web-platform/tests/html/canvas/element/manual/imagebitmap/createImageBitmap-serializable.html b/testing/web-platform/tests/html/canvas/element/manual/imagebitmap/createImageBitmap-serializable.html
new file mode 100644
index 0000000000..c185cd9cbd
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/manual/imagebitmap/createImageBitmap-serializable.html
@@ -0,0 +1,52 @@
+
+
+createImageBitmap serialize test
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
diff --git a/testing/web-platform/tests/html/canvas/element/manual/imagebitmap/createImageBitmap-sizeOverflow.html b/testing/web-platform/tests/html/canvas/element/manual/imagebitmap/createImageBitmap-sizeOverflow.html
new file mode 100644
index 0000000000..25c1fb6885
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/manual/imagebitmap/createImageBitmap-sizeOverflow.html
@@ -0,0 +1,52 @@
+
+
+createImageBitmap with size overflow
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/manual/imagebitmap/createImageBitmap-transfer.html b/testing/web-platform/tests/html/canvas/element/manual/imagebitmap/createImageBitmap-transfer.html
new file mode 100644
index 0000000000..3ec02fcbf4
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/manual/imagebitmap/createImageBitmap-transfer.html
@@ -0,0 +1,53 @@
+
+
+createImageBitmap transferring test
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
diff --git a/testing/web-platform/tests/html/canvas/element/manual/imagebitmap/createImageBitmap-worker.js b/testing/web-platform/tests/html/canvas/element/manual/imagebitmap/createImageBitmap-worker.js
new file mode 100644
index 0000000000..67a0904e47
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/manual/imagebitmap/createImageBitmap-worker.js
@@ -0,0 +1,17 @@
+function makeBlob() {
+    return new Promise(function(resolve, reject) {
+        var xhr = new XMLHttpRequest();
+        xhr.open("GET", '/images/pattern.png');
+        xhr.responseType = 'blob';
+        xhr.send();
+        xhr.onload = function() {
+            resolve(xhr.response);
+        };
+    });
+}
+
+addEventListener("message", () => {
+    makeBlob().then(createImageBitmap).then(bitmap => {
+        postMessage(bitmap, [bitmap]);
+    });
+});
diff --git a/testing/web-platform/tests/html/canvas/element/manual/imagebitmap/imageBitmap-from-imageData-no-image-rotation-expected.html b/testing/web-platform/tests/html/canvas/element/manual/imagebitmap/imageBitmap-from-imageData-no-image-rotation-expected.html
new file mode 100644
index 0000000000..64b1791afe
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/manual/imagebitmap/imageBitmap-from-imageData-no-image-rotation-expected.html
@@ -0,0 +1,18 @@
+
+
+  
+>
+
\ No newline at end of file
diff --git a/testing/web-platform/tests/html/canvas/element/manual/imagebitmap/imageBitmap-from-imageData-no-image-rotation.html b/testing/web-platform/tests/html/canvas/element/manual/imagebitmap/imageBitmap-from-imageData-no-image-rotation.html
new file mode 100644
index 0000000000..e93c17c8e8
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/manual/imagebitmap/imageBitmap-from-imageData-no-image-rotation.html
@@ -0,0 +1,26 @@
+
+  
+  
+
+  
+>
+
\ No newline at end of file
diff --git a/testing/web-platform/tests/html/canvas/element/manual/imagebitmap/imageBitmapRendering-transferFromImageBitmap-expected.html b/testing/web-platform/tests/html/canvas/element/manual/imagebitmap/imageBitmapRendering-transferFromImageBitmap-expected.html
new file mode 100644
index 0000000000..bababda44c
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/manual/imagebitmap/imageBitmapRendering-transferFromImageBitmap-expected.html
@@ -0,0 +1,27 @@
+
+
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Test whether the imageOrientation "from-image" works when creating an ImageBitmap from the ImageData of a canvas, and then transfered to an ImageBitmapRenderingContext.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+  
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/manual/imagebitmap/imageBitmapRendering-transferFromImageBitmap-flipped-expected.html b/testing/web-platform/tests/html/canvas/element/manual/imagebitmap/imageBitmapRendering-transferFromImageBitmap-flipped-expected.html
new file mode 100644
index 0000000000..5e21671973
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/manual/imagebitmap/imageBitmapRendering-transferFromImageBitmap-flipped-expected.html
@@ -0,0 +1,27 @@
+
+
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Test whether the imageOrientation "flipY" works when creating an ImageBitmap from the ImageData of a canvas, and then transfered to an ImageBitmapRenderingContext.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+  
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/manual/imagebitmap/imageBitmapRendering-transferFromImageBitmap-flipped.html b/testing/web-platform/tests/html/canvas/element/manual/imagebitmap/imageBitmapRendering-transferFromImageBitmap-flipped.html
new file mode 100644
index 0000000000..02e0690876
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/manual/imagebitmap/imageBitmapRendering-transferFromImageBitmap-flipped.html
@@ -0,0 +1,34 @@
+
+
+
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Test whether the imageOrientation "flipY" works when creating an ImageBitmap from the ImageData of a canvas, and then transfered to an ImageBitmapRenderingContext.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+  
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/manual/imagebitmap/imageBitmapRendering-transferFromImageBitmap-webgl-expected.html b/testing/web-platform/tests/html/canvas/element/manual/imagebitmap/imageBitmapRendering-transferFromImageBitmap-webgl-expected.html
new file mode 100644
index 0000000000..4f155316f0
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/manual/imagebitmap/imageBitmapRendering-transferFromImageBitmap-webgl-expected.html
@@ -0,0 +1,35 @@
+
+
+
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    Test creating an ImageBitmap from the transferToImageBitmap of a webgl OffscreenCanvas, and then
+    transferred to an ImageBitmapRenderingContext.
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+  
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/manual/imagebitmap/imageBitmapRendering-transferFromImageBitmap-webgl.html b/testing/web-platform/tests/html/canvas/element/manual/imagebitmap/imageBitmapRendering-transferFromImageBitmap-webgl.html
new file mode 100644
index 0000000000..049a3822cd
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/manual/imagebitmap/imageBitmapRendering-transferFromImageBitmap-webgl.html
@@ -0,0 +1,38 @@
+
+
+
+
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    Test creating an ImageBitmap from the transferToImageBitmap of a webgl OffscreenCanvas, and then
+    transferred to an ImageBitmapRenderingContext.
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+  
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/manual/imagebitmap/imageBitmapRendering-transferFromImageBitmap.html b/testing/web-platform/tests/html/canvas/element/manual/imagebitmap/imageBitmapRendering-transferFromImageBitmap.html
new file mode 100644
index 0000000000..6d3d886759
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/manual/imagebitmap/imageBitmapRendering-transferFromImageBitmap.html
@@ -0,0 +1,34 @@
+
+
+
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Test whether the imageOrientation "from-image" works when creating an ImageBitmap from the ImageData of a canvas, and then transfered to an ImageBitmapRenderingContext.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+  
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/manual/imagebitmap/imagebitmap-replication-exif-orientation.html b/testing/web-platform/tests/html/canvas/element/manual/imagebitmap/imagebitmap-replication-exif-orientation.html
new file mode 100644
index 0000000000..ab4331adef
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/manual/imagebitmap/imagebitmap-replication-exif-orientation.html
@@ -0,0 +1,146 @@
+
+
+
+
+Verify that image orientation is propagated when ImageBitmap objects are replicated.
+
+
+
+
+
+
+
+
\ No newline at end of file
diff --git a/testing/web-platform/tests/html/canvas/element/manual/imagebitmap/resources/squares_1.jpg b/testing/web-platform/tests/html/canvas/element/manual/imagebitmap/resources/squares_1.jpg
new file mode 100644
index 0000000000..0f0e8866b4
Binary files /dev/null and b/testing/web-platform/tests/html/canvas/element/manual/imagebitmap/resources/squares_1.jpg differ
diff --git a/testing/web-platform/tests/html/canvas/element/manual/imagebitmap/resources/squares_2.jpg b/testing/web-platform/tests/html/canvas/element/manual/imagebitmap/resources/squares_2.jpg
new file mode 100644
index 0000000000..526f7a6c82
Binary files /dev/null and b/testing/web-platform/tests/html/canvas/element/manual/imagebitmap/resources/squares_2.jpg differ
diff --git a/testing/web-platform/tests/html/canvas/element/manual/imagebitmap/resources/squares_3.jpg b/testing/web-platform/tests/html/canvas/element/manual/imagebitmap/resources/squares_3.jpg
new file mode 100644
index 0000000000..a21e521c2d
Binary files /dev/null and b/testing/web-platform/tests/html/canvas/element/manual/imagebitmap/resources/squares_3.jpg differ
diff --git a/testing/web-platform/tests/html/canvas/element/manual/imagebitmap/resources/squares_4.jpg b/testing/web-platform/tests/html/canvas/element/manual/imagebitmap/resources/squares_4.jpg
new file mode 100644
index 0000000000..c4380b1e67
Binary files /dev/null and b/testing/web-platform/tests/html/canvas/element/manual/imagebitmap/resources/squares_4.jpg differ
diff --git a/testing/web-platform/tests/html/canvas/element/manual/imagebitmap/resources/squares_5.jpg b/testing/web-platform/tests/html/canvas/element/manual/imagebitmap/resources/squares_5.jpg
new file mode 100644
index 0000000000..0bdd89aa1b
Binary files /dev/null and b/testing/web-platform/tests/html/canvas/element/manual/imagebitmap/resources/squares_5.jpg differ
diff --git a/testing/web-platform/tests/html/canvas/element/manual/imagebitmap/resources/squares_6.jpg b/testing/web-platform/tests/html/canvas/element/manual/imagebitmap/resources/squares_6.jpg
new file mode 100644
index 0000000000..f197760a11
Binary files /dev/null and b/testing/web-platform/tests/html/canvas/element/manual/imagebitmap/resources/squares_6.jpg differ
diff --git a/testing/web-platform/tests/html/canvas/element/manual/imagebitmap/resources/squares_7.jpg b/testing/web-platform/tests/html/canvas/element/manual/imagebitmap/resources/squares_7.jpg
new file mode 100644
index 0000000000..9b1a346888
Binary files /dev/null and b/testing/web-platform/tests/html/canvas/element/manual/imagebitmap/resources/squares_7.jpg differ
diff --git a/testing/web-platform/tests/html/canvas/element/manual/imagebitmap/resources/squares_8.jpg b/testing/web-platform/tests/html/canvas/element/manual/imagebitmap/resources/squares_8.jpg
new file mode 100644
index 0000000000..41d2fbe7f0
Binary files /dev/null and b/testing/web-platform/tests/html/canvas/element/manual/imagebitmap/resources/squares_8.jpg differ
diff --git a/testing/web-platform/tests/html/canvas/element/manual/imagebitmap/serialize-worker.js b/testing/web-platform/tests/html/canvas/element/manual/imagebitmap/serialize-worker.js
new file mode 100644
index 0000000000..a76537cc9e
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/manual/imagebitmap/serialize-worker.js
@@ -0,0 +1,3 @@
+addEventListener('message', evt => {
+    postMessage(evt.data);
+});
diff --git a/testing/web-platform/tests/html/canvas/element/manual/imagebitmap/transfer-worker.js b/testing/web-platform/tests/html/canvas/element/manual/imagebitmap/transfer-worker.js
new file mode 100644
index 0000000000..55465a899c
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/manual/imagebitmap/transfer-worker.js
@@ -0,0 +1,3 @@
+addEventListener('message', evt => {
+    postMessage(evt.data, [evt.data.bitmap]);
+});
diff --git a/testing/web-platform/tests/html/canvas/element/manual/imagebitmap/worker-onmessage-noop.js b/testing/web-platform/tests/html/canvas/element/manual/imagebitmap/worker-onmessage-noop.js
new file mode 100644
index 0000000000..c0a352b4d9
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/manual/imagebitmap/worker-onmessage-noop.js
@@ -0,0 +1,3 @@
+self.onmessage = function(e) {
+};
+
diff --git a/testing/web-platform/tests/html/canvas/element/manual/line-styles/canvas_linestyles_linecap_001-ref.htm b/testing/web-platform/tests/html/canvas/element/manual/line-styles/canvas_linestyles_linecap_001-ref.htm
new file mode 100644
index 0000000000..f85af9aab2
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/manual/line-styles/canvas_linestyles_linecap_001-ref.htm
@@ -0,0 +1,11 @@
+
+
+    
+        HTML5 Canvas Test: "square" lineCap
+        
+    
+    
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Description: The square value of lineCap means that a rectangle with the length of the line width and the width of half the line width, placed flat against the edge perpendicular to the direction of the line, must be added at the end of each line.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  black rect
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
+
diff --git a/testing/web-platform/tests/html/canvas/element/manual/line-styles/canvas_linestyles_linecap_001.htm b/testing/web-platform/tests/html/canvas/element/manual/line-styles/canvas_linestyles_linecap_001.htm
new file mode 100644
index 0000000000..583dbc9d13
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/manual/line-styles/canvas_linestyles_linecap_001.htm
@@ -0,0 +1,37 @@
+
+
+    
+        HTML5 Canvas Test: "square" lineCap
+        
+        
+        
+        
+        
+    
+    
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Description: The square value of lineCap means that a rectangle with the length of the line width and the width of half the line width, placed flat against the edge perpendicular to the direction of the line, must be added at the end of each line.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        Browser does not support HTML5 Canvas.
+    
+
diff --git a/testing/web-platform/tests/html/canvas/element/manual/line-styles/lineto_a.html b/testing/web-platform/tests/html/canvas/element/manual/line-styles/lineto_a.html
new file mode 100644
index 0000000000..7e692f937d
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/manual/line-styles/lineto_a.html
@@ -0,0 +1,26 @@
+
+
+
+
+
+Your browser does not support the HTML5 canvas tag.
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/manual/line-styles/lineto_ref.html b/testing/web-platform/tests/html/canvas/element/manual/line-styles/lineto_ref.html
new file mode 100644
index 0000000000..3dc78ff804
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/manual/line-styles/lineto_ref.html
@@ -0,0 +1,15 @@
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
diff --git a/testing/web-platform/tests/html/canvas/element/manual/line-styles/setLineDash.html b/testing/web-platform/tests/html/canvas/element/manual/line-styles/setLineDash.html
new file mode 100644
index 0000000000..6b8d131da4
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/manual/line-styles/setLineDash.html
@@ -0,0 +1,104 @@
+
+
+setLineDash
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/manual/shadows/canvas_shadows_001.htm b/testing/web-platform/tests/html/canvas/element/manual/shadows/canvas_shadows_001.htm
new file mode 100644
index 0000000000..1763950d61
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/manual/shadows/canvas_shadows_001.htm
@@ -0,0 +1,60 @@
+
+
+    
+        HTML5 Canvas Test: Shadows for linear gradients
+        
+        
+        
+        
+        
+        
+    
+    
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Description: Shadows must be drawn for linear gradients.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Test passes if there is one gradient filled rectangle and one black rectangle, and no red seen on the page.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        Browser does not support HTML5 Canvas.
+    
+
diff --git a/testing/web-platform/tests/html/canvas/element/manual/shadows/canvas_shadows_002-ref.htm b/testing/web-platform/tests/html/canvas/element/manual/shadows/canvas_shadows_002-ref.htm
new file mode 100644
index 0000000000..0658be808e
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/manual/shadows/canvas_shadows_002-ref.htm
@@ -0,0 +1,27 @@
+
+
+  
+    HTML5 Canvas Test:  Shadows for images
+    
+    
+    
+    
+
+  
+  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Description:  Shadows must be drawn for images.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Test passes if two black rectangles are shown and there is no red visible on the page.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    Browser does not support HTML5 Canvas.
+    
+  
+
diff --git a/testing/web-platform/tests/html/canvas/element/manual/shadows/canvas_shadows_002.htm b/testing/web-platform/tests/html/canvas/element/manual/shadows/canvas_shadows_002.htm
new file mode 100644
index 0000000000..908fffea13
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/manual/shadows/canvas_shadows_002.htm
@@ -0,0 +1,34 @@
+
+
+  
+    HTML5 Canvas Test:  Shadows for images
+    
+    
+    
+    
+    
+  
+  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Description:  Shadows must be drawn for images.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Test passes if two black rectangles are shown and there is no red visible on the page.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    Browser does not support HTML5 Canvas.
+    
+  
+
diff --git a/testing/web-platform/tests/html/canvas/element/manual/shadows/canvas_shadows_system_colors-expected.html b/testing/web-platform/tests/html/canvas/element/manual/shadows/canvas_shadows_system_colors-expected.html
new file mode 100644
index 0000000000..e568aa9a5c
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/manual/shadows/canvas_shadows_system_colors-expected.html
@@ -0,0 +1,11 @@
+
+
+
+  
+  System Colors work for Canvas Drop-Shadow Filters
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
\ No newline at end of file
diff --git a/testing/web-platform/tests/html/canvas/element/manual/shadows/canvas_shadows_system_colors.html b/testing/web-platform/tests/html/canvas/element/manual/shadows/canvas_shadows_system_colors.html
new file mode 100644
index 0000000000..42978fb18f
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/manual/shadows/canvas_shadows_system_colors.html
@@ -0,0 +1,19 @@
+
+
+
+  
+  System Colors work for Canvas Drop-Shadow Filters
+  
+
+
+
+
+
+
\ No newline at end of file
diff --git a/testing/web-platform/tests/html/canvas/element/manual/shadows/shadowBlur_gaussian_tolerance.1.html b/testing/web-platform/tests/html/canvas/element/manual/shadows/shadowBlur_gaussian_tolerance.1.html
new file mode 100644
index 0000000000..eec27bf108
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/manual/shadows/shadowBlur_gaussian_tolerance.1.html
@@ -0,0 +1,191 @@
+
+Test of canvas shadowBlur Gaussian blur pixel values
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Test of canvas shadowBlur Gaussian blur pixel values
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
diff --git a/testing/web-platform/tests/html/canvas/element/manual/text-styles/canvas_text_font_001-ref.htm b/testing/web-platform/tests/html/canvas/element/manual/text-styles/canvas_text_font_001-ref.htm
new file mode 100644
index 0000000000..1a19757e00
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/manual/text-styles/canvas_text_font_001-ref.htm
@@ -0,0 +1,22 @@
+
+
+    
+        HTML5 Canvas Test:  Ignore property-independent style sheet syntax "inherit" in Text (reference)
+        
+    
+    
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Description:  Ignore "inherit" property-independent style sheet syntax without assigning a new font value.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Test passes if there are two identical black boxes below.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        Browser does not support HTML5 Canvas.
+    
+
diff --git a/testing/web-platform/tests/html/canvas/element/manual/text-styles/canvas_text_font_001.htm b/testing/web-platform/tests/html/canvas/element/manual/text-styles/canvas_text_font_001.htm
new file mode 100644
index 0000000000..923ce71c07
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/manual/text-styles/canvas_text_font_001.htm
@@ -0,0 +1,33 @@
+
+
+    
+        HTML5 Canvas Test:  Ignore property-independent style sheet syntax "inherit" in Text
+        
+        
+        
+        
+        
+    
+    
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Description:  Ignore "inherit" property-independent style sheet syntax without assigning a new font value.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Test passes if there are two identical black boxes below.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        Browser does not support HTML5 Canvas.
+    
+
diff --git a/testing/web-platform/tests/html/canvas/element/manual/the-canvas-state/2d.state.saverestore.imageSmoothingEnabled.html b/testing/web-platform/tests/html/canvas/element/manual/the-canvas-state/2d.state.saverestore.imageSmoothingEnabled.html
new file mode 100644
index 0000000000..e99be83d5f
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/manual/the-canvas-state/2d.state.saverestore.imageSmoothingEnabled.html
@@ -0,0 +1,47 @@
+
+
+CanvasRenderingContext2D imageSmoothingEnabled save/restore test
+
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/manual/the-canvas-state/2d.zero.size.canvas.html b/testing/web-platform/tests/html/canvas/element/manual/the-canvas-state/2d.zero.size.canvas.html
new file mode 100644
index 0000000000..273e5c7484
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/manual/the-canvas-state/2d.zero.size.canvas.html
@@ -0,0 +1,16 @@
+
+
+
+
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/manual/the-canvas-state/canvas_state_restore_001-ref.htm b/testing/web-platform/tests/html/canvas/element/manual/the-canvas-state/canvas_state_restore_001-ref.htm
new file mode 100644
index 0000000000..aee610d2ec
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/manual/the-canvas-state/canvas_state_restore_001-ref.htm
@@ -0,0 +1,11 @@
+
+
+    
+        HTML5 Canvas Test: restore() pops top entry in drawing state stack
+        
+    
+    
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Description: restore() pops the top entry in the drawing state stack.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  3 colors
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
+
diff --git a/testing/web-platform/tests/html/canvas/element/manual/the-canvas-state/canvas_state_restore_001.htm b/testing/web-platform/tests/html/canvas/element/manual/the-canvas-state/canvas_state_restore_001.htm
new file mode 100644
index 0000000000..6d5a3cb20f
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/manual/the-canvas-state/canvas_state_restore_001.htm
@@ -0,0 +1,42 @@
+
+
+    
+        HTML5 Canvas Test: restore() pops top entry in drawing state stack
+        
+        
+        
+        
+        
+    
+    
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Description: restore() pops the top entry in the drawing state stack.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        Browser does not support HTML5 Canvas.
+    
+
diff --git a/testing/web-platform/tests/html/canvas/element/manual/transformations/2d.transformation.getTransform.html b/testing/web-platform/tests/html/canvas/element/manual/transformations/2d.transformation.getTransform.html
new file mode 100644
index 0000000000..664efd50e6
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/manual/transformations/2d.transformation.getTransform.html
@@ -0,0 +1,39 @@
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/manual/transformations/canvas_transformations_reset_001-ref.html b/testing/web-platform/tests/html/canvas/element/manual/transformations/canvas_transformations_reset_001-ref.html
new file mode 100644
index 0000000000..caeea04cef
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/manual/transformations/canvas_transformations_reset_001-ref.html
@@ -0,0 +1,21 @@
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/manual/transformations/canvas_transformations_reset_001.html b/testing/web-platform/tests/html/canvas/element/manual/transformations/canvas_transformations_reset_001.html
new file mode 100644
index 0000000000..c12acbf6f3
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/manual/transformations/canvas_transformations_reset_001.html
@@ -0,0 +1,22 @@
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/manual/transformations/canvas_transformations_scale_001-ref.htm b/testing/web-platform/tests/html/canvas/element/manual/transformations/canvas_transformations_scale_001-ref.htm
new file mode 100644
index 0000000000..1201bcca9f
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/manual/transformations/canvas_transformations_scale_001-ref.htm
@@ -0,0 +1,11 @@
+
+
+    
+        HTML5 Canvas Test: scale() transformation
+        
+    
+    
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Description: The scale(x, y) method must add the scaling transformation described by the arguments to the transformation matrix.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  black rectangle
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
+
diff --git a/testing/web-platform/tests/html/canvas/element/manual/transformations/canvas_transformations_scale_001.htm b/testing/web-platform/tests/html/canvas/element/manual/transformations/canvas_transformations_scale_001.htm
new file mode 100644
index 0000000000..73f71351ea
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/manual/transformations/canvas_transformations_scale_001.htm
@@ -0,0 +1,31 @@
+
+
+
+    
+        HTML5 Canvas Test: scale() transformation
+        
+        
+        
+        
+        
+    
+    
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Description: The scale(x, y) method must add the scaling transformation described by the arguments to the transformation matrix.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        Browser does not support HTML5 Canvas.
+    
+
diff --git a/testing/web-platform/tests/html/canvas/element/manual/transformations/transform_a.html b/testing/web-platform/tests/html/canvas/element/manual/transformations/transform_a.html
new file mode 100644
index 0000000000..8c1f59efda
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/manual/transformations/transform_a.html
@@ -0,0 +1,22 @@
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/manual/transformations/transform_ref.html b/testing/web-platform/tests/html/canvas/element/manual/transformations/transform_ref.html
new file mode 100644
index 0000000000..2a166c36ce
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/manual/transformations/transform_ref.html
@@ -0,0 +1,16 @@
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
diff --git a/testing/web-platform/tests/html/canvas/element/manual/unclosed-canvas-1-expected.htm b/testing/web-platform/tests/html/canvas/element/manual/unclosed-canvas-1-expected.htm
new file mode 100644
index 0000000000..3272f32fb8
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/manual/unclosed-canvas-1-expected.htm
@@ -0,0 +1,10 @@
+
+
+    
+        unclosed canvas tag in body
+    
+    
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  There should be no text below this, because the text is inside a canvas element.
+            The canvas is never closed, and the rest of the body ends up inside it.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
+
diff --git a/testing/web-platform/tests/html/canvas/element/manual/unclosed-canvas-1.htm b/testing/web-platform/tests/html/canvas/element/manual/unclosed-canvas-1.htm
new file mode 100644
index 0000000000..5e0c914755
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/manual/unclosed-canvas-1.htm
@@ -0,0 +1,14 @@
+
+
+    
+        unclosed canvas tag in body
+        
+        
+        
+    
+    
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  There should be no text below this, because the text is inside a canvas element.
+            The canvas is never closed, and the rest of the body ends up inside it. 
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        This text should NOT be visible if JavaScript is enabled.
+    
+
diff --git a/testing/web-platform/tests/html/canvas/element/manual/unclosed-canvas-2-expected.htm b/testing/web-platform/tests/html/canvas/element/manual/unclosed-canvas-2-expected.htm
new file mode 100644
index 0000000000..fd48cd0db1
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/manual/unclosed-canvas-2-expected.htm
@@ -0,0 +1,14 @@
+
+
+    
+        unclosed canvas tag in body
+    
+    
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  This text should be visible, even though it's preceded by an unclosed canvas tag,
+            because of the </div> that closes an element opened before the canvas.
+            There's nothing special about div; we get the same results with other types of
+            elements.
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
+
diff --git a/testing/web-platform/tests/html/canvas/element/manual/unclosed-canvas-2.htm b/testing/web-platform/tests/html/canvas/element/manual/unclosed-canvas-2.htm
new file mode 100644
index 0000000000..fb329e73d6
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/manual/unclosed-canvas-2.htm
@@ -0,0 +1,15 @@
+
+
+    
+        unclosed canvas tag in body
+        
+        
+        
+    
+    
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  This text should be visible, even though it's preceded by an unclosed canvas tag,
+        because of the </div> that closes an element opened before the canvas.
+        There's nothing special about div; we get the same results with other types of elements.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
+
diff --git a/testing/web-platform/tests/html/canvas/element/manual/unclosed-canvas-3-expected.htm b/testing/web-platform/tests/html/canvas/element/manual/unclosed-canvas-3-expected.htm
new file mode 100644
index 0000000000..efd239b4fb
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/manual/unclosed-canvas-3-expected.htm
@@ -0,0 +1,13 @@
+
+
+    
+        unclosed canvas tag in body
+    
+    
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  There should be no text below this, because the text is inside a canvas element
+            and the </div> that's also inside the canvas element does not close an open
+            element. The canvas is never closed, and the rest of the body ends up inside it.
+            There's nothing special about div; we get the same results with other types of
+            elements.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
+
diff --git a/testing/web-platform/tests/html/canvas/element/manual/unclosed-canvas-3.htm b/testing/web-platform/tests/html/canvas/element/manual/unclosed-canvas-3.htm
new file mode 100644
index 0000000000..8ffaa0f9eb
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/manual/unclosed-canvas-3.htm
@@ -0,0 +1,16 @@
+
+
+    
+        unclosed canvas tag in body
+        
+        
+        
+    
+    
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  There should be no text below this, because the text is inside a canvas element
+        and the </div> that's also inside the canvas element does not close an open element.
+        The canvas is never closed, and the rest of the body ends up inside it.
+        There's nothing special about div; we get the same results with other types of elements.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  This text should NOT be visible if JavaScript is enabled.
+    
+
diff --git a/testing/web-platform/tests/html/canvas/element/manual/unclosed-canvas-4-expected.htm b/testing/web-platform/tests/html/canvas/element/manual/unclosed-canvas-4-expected.htm
new file mode 100644
index 0000000000..492449261e
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/manual/unclosed-canvas-4-expected.htm
@@ -0,0 +1,14 @@
+
+
+    
+        unclosed canvas tag in body
+    
+    
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  There should be no text below this, because the text is inside a canvas element
+            and the </div> that's also inside the canvas element does not close an open
+            element. The canvas is never closed, and the rest of the body ends up inside it.
+            There's nothing special about div; we get the same results with other types of
+            elements. The fact that the canvas tag uses XML self-closing syntax has no effect.
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
+
diff --git a/testing/web-platform/tests/html/canvas/element/manual/unclosed-canvas-4.htm b/testing/web-platform/tests/html/canvas/element/manual/unclosed-canvas-4.htm
new file mode 100644
index 0000000000..aa5fd14438
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/manual/unclosed-canvas-4.htm
@@ -0,0 +1,17 @@
+
+
+    
+        unclosed canvas tag in body
+        
+        
+        
+    
+    
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  There should be no text below this, because the text is inside a canvas element
+        and the </div> that's also inside the canvas element does not close an open element.
+        The canvas is never closed, and the rest of the body ends up inside it.
+        There's nothing special about div; we get the same results with other types of elements.
+        The fact that the canvas tag uses XML self-closing syntax has no effect.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  This text should NOT be visible if JavaScript is enabled.
+    
+
diff --git a/testing/web-platform/tests/html/canvas/element/manual/wide-gamut-canvas/ImageData-fidelity.html b/testing/web-platform/tests/html/canvas/element/manual/wide-gamut-canvas/ImageData-fidelity.html
new file mode 100644
index 0000000000..c2d158f893
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/manual/wide-gamut-canvas/ImageData-fidelity.html
@@ -0,0 +1,126 @@
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/manual/wide-gamut-canvas/canvas-display-p3-drawImage-ImageBitmap-Blob.html b/testing/web-platform/tests/html/canvas/element/manual/wide-gamut-canvas/canvas-display-p3-drawImage-ImageBitmap-Blob.html
new file mode 100644
index 0000000000..9b96b1a6d2
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/manual/wide-gamut-canvas/canvas-display-p3-drawImage-ImageBitmap-Blob.html
@@ -0,0 +1,35 @@
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/manual/wide-gamut-canvas/canvas-display-p3-drawImage-ImageBitmap-ImageBitmap.html b/testing/web-platform/tests/html/canvas/element/manual/wide-gamut-canvas/canvas-display-p3-drawImage-ImageBitmap-ImageBitmap.html
new file mode 100644
index 0000000000..0bd18e9beb
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/manual/wide-gamut-canvas/canvas-display-p3-drawImage-ImageBitmap-ImageBitmap.html
@@ -0,0 +1,47 @@
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/manual/wide-gamut-canvas/canvas-display-p3-drawImage-ImageBitmap-ImageData.html b/testing/web-platform/tests/html/canvas/element/manual/wide-gamut-canvas/canvas-display-p3-drawImage-ImageBitmap-ImageData.html
new file mode 100644
index 0000000000..2216b46dd8
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/manual/wide-gamut-canvas/canvas-display-p3-drawImage-ImageBitmap-ImageData.html
@@ -0,0 +1,46 @@
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/manual/wide-gamut-canvas/canvas-display-p3-drawImage-ImageBitmap-canvas.html b/testing/web-platform/tests/html/canvas/element/manual/wide-gamut-canvas/canvas-display-p3-drawImage-ImageBitmap-canvas.html
new file mode 100644
index 0000000000..f3156349ed
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/manual/wide-gamut-canvas/canvas-display-p3-drawImage-ImageBitmap-canvas.html
@@ -0,0 +1,53 @@
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/manual/wide-gamut-canvas/canvas-display-p3-drawImage-ImageBitmap-cloned.html b/testing/web-platform/tests/html/canvas/element/manual/wide-gamut-canvas/canvas-display-p3-drawImage-ImageBitmap-cloned.html
new file mode 100644
index 0000000000..cf4f38f8db
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/manual/wide-gamut-canvas/canvas-display-p3-drawImage-ImageBitmap-cloned.html
@@ -0,0 +1,70 @@
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/manual/wide-gamut-canvas/canvas-display-p3-drawImage-ImageBitmap-image.html b/testing/web-platform/tests/html/canvas/element/manual/wide-gamut-canvas/canvas-display-p3-drawImage-ImageBitmap-image.html
new file mode 100644
index 0000000000..e7e85c915d
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/manual/wide-gamut-canvas/canvas-display-p3-drawImage-ImageBitmap-image.html
@@ -0,0 +1,44 @@
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/manual/wide-gamut-canvas/canvas-display-p3-drawImage-ImageBitmap-video.html b/testing/web-platform/tests/html/canvas/element/manual/wide-gamut-canvas/canvas-display-p3-drawImage-ImageBitmap-video.html
new file mode 100644
index 0000000000..3e86bb5596
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/manual/wide-gamut-canvas/canvas-display-p3-drawImage-ImageBitmap-video.html
@@ -0,0 +1,57 @@
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/manual/wide-gamut-canvas/canvas-display-p3-drawImage-video.html b/testing/web-platform/tests/html/canvas/element/manual/wide-gamut-canvas/canvas-display-p3-drawImage-video.html
new file mode 100644
index 0000000000..1b04cde779
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/manual/wide-gamut-canvas/canvas-display-p3-drawImage-video.html
@@ -0,0 +1,52 @@
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/manual/wide-gamut-canvas/canvas-display-p3-drawImage.https.html b/testing/web-platform/tests/html/canvas/element/manual/wide-gamut-canvas/canvas-display-p3-drawImage.https.html
new file mode 100644
index 0000000000..35ee91343d
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/manual/wide-gamut-canvas/canvas-display-p3-drawImage.https.html
@@ -0,0 +1,41 @@
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/manual/wide-gamut-canvas/canvas-display-p3-pattern-canvas.html b/testing/web-platform/tests/html/canvas/element/manual/wide-gamut-canvas/canvas-display-p3-pattern-canvas.html
new file mode 100644
index 0000000000..2b9fb9b8f4
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/manual/wide-gamut-canvas/canvas-display-p3-pattern-canvas.html
@@ -0,0 +1,44 @@
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/manual/wide-gamut-canvas/canvas-display-p3-pattern-image.html b/testing/web-platform/tests/html/canvas/element/manual/wide-gamut-canvas/canvas-display-p3-pattern-image.html
new file mode 100644
index 0000000000..75a8392c02
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/manual/wide-gamut-canvas/canvas-display-p3-pattern-image.html
@@ -0,0 +1,37 @@
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/manual/wide-gamut-canvas/canvas-display-p3-settings.html b/testing/web-platform/tests/html/canvas/element/manual/wide-gamut-canvas/canvas-display-p3-settings.html
new file mode 100644
index 0000000000..2b1447437d
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/manual/wide-gamut-canvas/canvas-display-p3-settings.html
@@ -0,0 +1,36 @@
+
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/manual/wide-gamut-canvas/canvas-display-p3.js b/testing/web-platform/tests/html/canvas/element/manual/wide-gamut-canvas/canvas-display-p3.js
new file mode 100644
index 0000000000..c6ee97b788
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/manual/wide-gamut-canvas/canvas-display-p3.js
@@ -0,0 +1,283 @@
+// Each PNG:
+//  * is 2x2 and has a single color
+//  * has a filename that indicates its contents:
+//      -<8-or-16-bit-color-value>.png
+//  * was generated using ImageMagick commands like:
+//      convert -size 2x2 xc:'#BB0000FF' -profile Display-P3.icc Display-P3-BB0000FF.png
+//      convert -size 2x2 xc:'#BBBC00000000FFFF' -profile Adobe-RGB.icc Adobe-RGB-BBBC00000000FFFF.png
+
+// Top level key is the image filename. Second level key is the pair of
+// CanvasRenderingContext2DSettings.colorSpace and ImageDataSettings.colorSpace.
+const imageTests = {
+    // 8 bit source images
+
+    "sRGB-FF0000FF.png": {
+        "srgb srgb": [255, 0, 0, 255],
+        "srgb display-p3": [234, 51, 35, 255],
+        "display-p3 srgb": [255, 0, 0, 255],
+        "display-p3 display-p3": [234, 51, 35, 255],
+    },
+    "sRGB-FF0000CC.png": {
+        "srgb srgb": [255, 0, 0, 204],
+        "srgb display-p3": [234, 51, 35, 204],
+        "display-p3 srgb": [255, 0, 0, 204],
+        "display-p3 display-p3": [234, 51, 35, 204],
+    },
+    "sRGB-BB0000FF.png": {
+        "srgb srgb": [187, 0, 0, 255],
+        "srgb display-p3": [171, 35, 23, 255],
+        "display-p3 srgb": [187, 1, 0, 255],
+        "display-p3 display-p3": [171, 35, 23, 255],
+    },
+    "sRGB-BB0000CC.png": {
+        "srgb srgb": [187, 0, 0, 204],
+        "srgb display-p3": [171, 35, 23, 204],
+        "display-p3 srgb": [187, 1, 0, 204],
+        "display-p3 display-p3": [171, 35, 23, 204],
+    },
+
+    "Display-P3-FF0000FF.png": {
+        "srgb srgb": [255, 0, 0, 255],
+        "srgb display-p3": [234, 51, 35, 255],
+        "display-p3 srgb": [255, 0, 0, 255],
+        "display-p3 display-p3": [255, 0, 0, 255],
+    },
+    "Display-P3-FF0000CC.png": {
+        "srgb srgb": [255, 0, 0, 204],
+        "srgb display-p3": [234, 51, 35, 204],
+        "display-p3 srgb": [255, 0, 0, 204],
+        "display-p3 display-p3": [255, 0, 0, 204],
+    },
+    "Display-P3-BB0000FF.png": {
+        "srgb srgb": [205, 0, 0, 255],
+        "srgb display-p3": [188, 39, 26, 255],
+        "display-p3 srgb": [205, 0, 0, 255],
+        "display-p3 display-p3": [187, 0, 0, 255],
+    },
+    "Display-P3-BB0000CC.png": {
+        "srgb srgb": [205, 0, 0, 204],
+        "srgb display-p3": [188, 39, 26, 204],
+        "display-p3 srgb": [205, 0, 0, 204],
+        "display-p3 display-p3": [187, 0, 0, 204],
+    },
+
+    "Adobe-RGB-FF0000FF.png": {
+        "srgb srgb": [255, 0, 0, 255],
+        "srgb display-p3": [234, 51, 35, 255],
+        "display-p3 srgb": [255, 19, 11, 255],
+        "display-p3 display-p3": [255, 61, 43, 255],
+    },
+    "Adobe-RGB-FF0000CC.png": {
+        "srgb srgb": [255, 0, 0, 204],
+        "srgb display-p3": [234, 51, 35, 204],
+        "display-p3 srgb": [255, 19, 11, 204],
+        "display-p3 display-p3": [255, 61, 43, 204],
+    },
+    "Adobe-RGB-BB0000FF.png": {
+        "srgb srgb": [219, 0, 0, 255],
+        "srgb display-p3": [201, 42, 29, 255],
+        "display-p3 srgb": [219, 0, 1, 255],
+        "display-p3 display-p3": [201, 42, 29, 255],
+    },
+    "Adobe-RGB-BB0000CC.png": {
+        "srgb srgb": [219, 0, 0, 204],
+        "srgb display-p3": [201, 42, 29, 204],
+        "display-p3 srgb": [219, 0, 1, 204],
+        "display-p3 display-p3": [201, 42, 29, 204],
+    },
+
+    "Generic-CMYK-FF000000.jpg": {
+        "srgb srgb": [0, 163, 218, 255],
+        "srgb display-p3": [72, 161, 213, 255],
+        "display-p3 srgb": [0, 163, 218, 255],
+        "display-p3 display-p3": [0, 160, 213, 255],
+    },
+    "Generic-CMYK-BE000000.jpg": {
+        "srgb srgb": [0, 180, 223, 255],
+        "srgb display-p3": [80, 177, 219, 255],
+        "display-p3 srgb": [0, 180, 223, 255],
+        "display-p3 display-p3": [65, 177, 219, 255],
+    },
+
+    // 16 bit source images
+
+    "sRGB-FFFF00000000FFFF.png": {
+        "srgb srgb": [255, 0, 0, 255],
+        "srgb display-p3": [234, 51, 35, 255],
+        "display-p3 srgb": [255, 0, 0, 255],
+        "display-p3 display-p3": [234, 51, 35, 255],
+    },
+    "sRGB-FFFF00000000CCCC.png": {
+        "srgb srgb": [255, 0, 0, 204],
+        "srgb display-p3": [234, 51, 35, 204],
+        "display-p3 srgb": [255, 0, 0, 204],
+        "display-p3 display-p3": [234, 51, 35, 204],
+    },
+    "sRGB-BBBC00000000FFFF.png": {
+        "srgb srgb": [187, 0, 0, 255],
+        "srgb display-p3": [171, 35, 23, 255],
+        "display-p3 srgb": [187, 1, 0, 255],
+        "display-p3 display-p3": [171, 35, 23, 255],
+    },
+    "sRGB-BBBC00000000CCCC.png": {
+        "srgb srgb": [187, 0, 0, 204],
+        "srgb display-p3": [171, 35, 23, 204],
+        "display-p3 srgb": [187, 1, 0, 204],
+        "display-p3 display-p3": [171, 35, 23, 204],
+    },
+
+    "Display-P3-FFFF00000000FFFF.png": {
+        "srgb srgb": [255, 0, 0, 255],
+        "srgb display-p3": [234, 51, 35, 255],
+        "display-p3 srgb": [255, 0, 0, 255],
+        "display-p3 display-p3": [255, 0, 0, 255],
+    },
+    "Display-P3-FFFF00000000CCCC.png": {
+        "srgb srgb": [255, 0, 0, 204],
+        "srgb display-p3": [234, 51, 35, 204],
+        "display-p3 srgb": [255, 0, 0, 204],
+        "display-p3 display-p3": [255, 0, 0, 204],
+    },
+    "Display-P3-BBBC00000000FFFF.png": {
+        "srgb srgb": [205, 0, 0, 255],
+        "srgb display-p3": [188, 39, 26, 255],
+        "display-p3 srgb": [205, 0, 0, 255],
+        "display-p3 display-p3": [187, 0, 0, 255],
+    },
+    "Display-P3-BBBC00000000CCCC.png": {
+        "srgb srgb": [205, 0, 0, 204],
+        "srgb display-p3": [188, 39, 26, 204],
+        "display-p3 srgb": [205, 0, 0, 204],
+        "display-p3 display-p3": [187, 0, 0, 204],
+    },
+
+    "Adobe-RGB-FFFF00000000FFFF.png": {
+        "srgb srgb": [255, 0, 0, 255],
+        "srgb display-p3": [234, 51, 35, 255],
+        "display-p3 srgb": [255, 19, 11, 255],
+        "display-p3 display-p3": [255, 61, 43, 255],
+    },
+    "Adobe-RGB-FFFF00000000CCCC.png": {
+        "srgb srgb": [255, 0, 0, 204],
+        "srgb display-p3": [234, 51, 35, 204],
+        "display-p3 srgb": [255, 19, 11, 204],
+        "display-p3 display-p3": [255, 61, 43, 204],
+    },
+    "Adobe-RGB-BBBC00000000FFFF.png": {
+        "srgb srgb": [219, 0, 0, 255],
+        "srgb display-p3": [201, 42, 29, 255],
+        "display-p3 srgb": [219, 0, 1, 255],
+        "display-p3 display-p3": [201, 42, 29, 255],
+    },
+    "Adobe-RGB-BBBC00000000CCCC.png": {
+        "srgb srgb": [219, 0, 0, 204],
+        "srgb display-p3": [201, 42, 29, 204],
+        "display-p3 srgb": [219, 0, 1, 204],
+        "display-p3 display-p3": [201, 42, 29, 204],
+    },
+};
+
+const svgImageTests = {
+    // SVG source images
+
+    "sRGB-FF0000.svg": {
+        "srgb srgb": [255, 0, 0, 255],
+        "srgb display-p3": [234, 51, 35, 255],
+        "display-p3 srgb": [255, 0, 0, 255],
+        "display-p3 display-p3": [234, 51, 35, 255],
+    },
+    "sRGB-BB0000.svg": {
+        "srgb srgb": [187, 0, 0, 255],
+        "srgb display-p3": [171, 35, 23, 255],
+        "display-p3 srgb": [187, 1, 0, 255],
+        "display-p3 display-p3": [171, 35, 23, 255],
+    },
+
+    "Display-P3-1-0-0.svg": {
+        "srgb srgb": [255, 0, 0, 255],
+        "srgb display-p3": [234, 51, 35, 255],
+        "display-p3 srgb": [255, 0, 0, 255],
+        "display-p3 display-p3": [255, 0, 0, 255],
+    },
+    "Display-P3-0.7333-0-0.svg": {
+        "srgb srgb": [205, 0, 0, 255],
+        "srgb display-p3": [188, 39, 26, 255],
+        "display-p3 srgb": [205, 0, 0, 255],
+        "display-p3 display-p3": [187, 0, 0, 255],
+    },
+};
+
+// Each video:
+//  * is 300x200 and has a single color
+//  * has a filename base that indicates its contents:
+//
+//      -<8-or-10-bit-color-value>
+//
+//  * was generated using commands like:
+//
+//      W=300 H=200 Y=3F Cb=66 Cr=F0 ; \
+//        perl -e "print pack('c', 0x$Y) x ($W * $H), pack('c', 0x$Cb) x ($W * $H / 4), pack('c', 0x$Cr) x ($W * $H / 4)" | \
+//        ffmpeg -f rawvideo -pix_fmt yuv420p -s:v ${W}x$H -r 25 -i - -pix_fmt yuv420p -colorspace bt709 -color_primaries bt709 -color_trc iec61966_2_1 sRGB-FF0100.webm
+//
+//      W=300 H=200 Y=0BB Cb=1BD Cr=2EF ; \
+//        perl -e "print pack('s', 0x$Y) x ($W * $H), pack('s', 0x$Cb) x ($W * $H / 4), pack('s', 0x$Cr) x ($W * $H / 4)" | \
+//        ffmpeg -f rawvideo -pix_fmt yuv420p10le -s:v ${W}x$H -r 25 -i - -c:v libx265 -vtag hvc1 -pix_fmt yuv420p10le -colorspace bt2020nc -color_primaries bt2020 -color_trc bt2020-10 Rec2020-222000000.mp4
+//
+//      W=300 H=200 Y=0BB Cb=1BD Cr=2EF ; \
+//        perl -e "print pack('s', 0x$Y) x ($W * $H), pack('s', 0x$Cb) x ($W * $H / 4), pack('s', 0x$Cr) x ($W * $H / 4)" | \
+//        ffmpeg -f rawvideo -pix_fmt yuv420p10le -s:v ${W}x$H -r 25 -i - -vcodec libvpx-vp9 -profile:v 2 -pix_fmt yuv420p10le -colorspace bt2020nc -color_primaries bt2020 -color_trc bt2020-10 Rec2020-222000000.webm
+//
+//    where the Y'CbCr values were computed using https://jdashg.github.io/misc/colors/from-coeffs.html.
+const videoTests = {
+    // Rec.709 Y'CbCr (0x3F, 0x66, 0xF0) = sRGB (0xFF, 0x01, 0x00)
+    "sRGB-FF0100": {
+        "srgb srgb": [255, 1, 0, 255],
+        "srgb display-p3": [234, 51, 35, 255],
+        "display-p3 srgb": [255, 0, 0, 255],
+        "display-p3 display-p3": [234, 51, 35, 255],
+    },
+    // Rec.709 Y'CbCr (0x32, 0x6D, 0xD2) = sRGB (0xBB, 0x00, 0x00)
+    "sRGB-BB0000": {
+        "srgb srgb": [187, 0, 0, 255],
+        "srgb display-p3": [171, 35, 23, 255],
+        "display-p3 srgb": [187, 1, 0, 255],
+        "display-p3 display-p3": [171, 35, 23, 255],
+    },
+
+    // 10 bit Rec.2020 Y'CbCr (0x126, 0x183, 0x3C0) = Rec.2020 (0x3FF, 0x000, 0x000)
+    "Rec2020-3FF000000": {
+        "srgb srgb": [255, 0, 0, 255],
+        "srgb display-p3": [234, 51, 35, 255],
+        "display-p3 srgb": [255, 0, 0, 255],
+        "display-p3 display-p3": [255, 0, 9, 255],
+    },
+    // 10 bit Rec.2020 Y'CbCr (0x0BB, 0x1BD, 0x2EF) = Rec.2020 (0x222, 0x000, 0x000)
+    "Rec2020-222000000": {
+        "srgb srgb": [186, 0, 0, 255],
+        "srgb display-p3": [170, 34, 23, 255],
+        "display-p3 srgb": [186, 0, 0, 255],
+        "display-p3 display-p3": [169, 0, 3, 255],
+    },
+};
+
+const fromSRGBToDisplayP3 = {
+    "255,0,0,255": [234, 51, 35, 255],
+    "255,0,0,204": [234, 51, 35, 204],
+    "187,0,0,255": [171, 35, 23, 255],
+    "187,0,0,204": [171, 35, 23, 204],
+};
+
+const fromDisplayP3ToSRGB = {
+    "255,0,0,255": [255, 0, 0, 255],
+    "255,0,0,204": [255, 0, 0, 204],
+    "187,0,0,255": [205, 0, 0, 255],
+    "187,0,0,204": [205, 0, 0, 204],
+};
+
+function pixelsApproximatelyEqual(p1, p2) {
+    for (let i = 0; i < 4; ++i) {
+        if (Math.abs(p1[i] - p2[i]) > 3)
+            return false;
+    }
+    return true;
+}
diff --git a/testing/web-platform/tests/html/canvas/element/manual/wide-gamut-canvas/imagedata-no-color-settings-crash.html b/testing/web-platform/tests/html/canvas/element/manual/wide-gamut-canvas/imagedata-no-color-settings-crash.html
new file mode 100644
index 0000000000..b21eaf72ab
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/manual/wide-gamut-canvas/imagedata-no-color-settings-crash.html
@@ -0,0 +1,26 @@
+
+
+
+
\ No newline at end of file
diff --git a/testing/web-platform/tests/html/canvas/element/manual/wide-gamut-canvas/resources/Adobe-RGB-BB0000CC.png b/testing/web-platform/tests/html/canvas/element/manual/wide-gamut-canvas/resources/Adobe-RGB-BB0000CC.png
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diff --git a/testing/web-platform/tests/html/canvas/element/manual/wide-gamut-canvas/resources/Display-P3-0.7333-0-0.svg b/testing/web-platform/tests/html/canvas/element/manual/wide-gamut-canvas/resources/Display-P3-0.7333-0-0.svg
new file mode 100644
index 0000000000..2737814877
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/manual/wide-gamut-canvas/resources/Display-P3-0.7333-0-0.svg
@@ -0,0 +1,3 @@
+
+  
+
diff --git a/testing/web-platform/tests/html/canvas/element/manual/wide-gamut-canvas/resources/Display-P3-1-0-0.svg b/testing/web-platform/tests/html/canvas/element/manual/wide-gamut-canvas/resources/Display-P3-1-0-0.svg
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--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/manual/wide-gamut-canvas/resources/Display-P3-1-0-0.svg
@@ -0,0 +1,3 @@
+
+  
+
diff --git a/testing/web-platform/tests/html/canvas/element/manual/wide-gamut-canvas/resources/Display-P3-BB0000CC.png b/testing/web-platform/tests/html/canvas/element/manual/wide-gamut-canvas/resources/Display-P3-BB0000CC.png
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diff --git a/testing/web-platform/tests/html/canvas/element/manual/wide-gamut-canvas/resources/png-16bit/2x2_8bit_Rec2020_opaque.png b/testing/web-platform/tests/html/canvas/element/manual/wide-gamut-canvas/resources/png-16bit/2x2_8bit_Rec2020_opaque.png
new file mode 100644
index 0000000000..599cd34040
Binary files /dev/null and b/testing/web-platform/tests/html/canvas/element/manual/wide-gamut-canvas/resources/png-16bit/2x2_8bit_Rec2020_opaque.png differ
diff --git a/testing/web-platform/tests/html/canvas/element/manual/wide-gamut-canvas/resources/png-16bit/2x2_8bit_Rec2020_transparent.png b/testing/web-platform/tests/html/canvas/element/manual/wide-gamut-canvas/resources/png-16bit/2x2_8bit_Rec2020_transparent.png
new file mode 100644
index 0000000000..ecf65c3d46
Binary files /dev/null and b/testing/web-platform/tests/html/canvas/element/manual/wide-gamut-canvas/resources/png-16bit/2x2_8bit_Rec2020_transparent.png differ
diff --git a/testing/web-platform/tests/html/canvas/element/manual/wide-gamut-canvas/resources/png-16bit/2x2_8bit_sRGB_opaque.png b/testing/web-platform/tests/html/canvas/element/manual/wide-gamut-canvas/resources/png-16bit/2x2_8bit_sRGB_opaque.png
new file mode 100644
index 0000000000..9cab6d12e6
Binary files /dev/null and b/testing/web-platform/tests/html/canvas/element/manual/wide-gamut-canvas/resources/png-16bit/2x2_8bit_sRGB_opaque.png differ
diff --git a/testing/web-platform/tests/html/canvas/element/manual/wide-gamut-canvas/resources/png-16bit/2x2_8bit_sRGB_transparent.png b/testing/web-platform/tests/html/canvas/element/manual/wide-gamut-canvas/resources/png-16bit/2x2_8bit_sRGB_transparent.png
new file mode 100644
index 0000000000..5fa01e62c2
Binary files /dev/null and b/testing/web-platform/tests/html/canvas/element/manual/wide-gamut-canvas/resources/png-16bit/2x2_8bit_sRGB_transparent.png differ
diff --git a/testing/web-platform/tests/html/canvas/element/manual/wide-gamut-canvas/resources/sRGB-BB0000.mp4 b/testing/web-platform/tests/html/canvas/element/manual/wide-gamut-canvas/resources/sRGB-BB0000.mp4
new file mode 100644
index 0000000000..59572f5138
Binary files /dev/null and b/testing/web-platform/tests/html/canvas/element/manual/wide-gamut-canvas/resources/sRGB-BB0000.mp4 differ
diff --git a/testing/web-platform/tests/html/canvas/element/manual/wide-gamut-canvas/resources/sRGB-BB0000.svg b/testing/web-platform/tests/html/canvas/element/manual/wide-gamut-canvas/resources/sRGB-BB0000.svg
new file mode 100644
index 0000000000..2b785f8cf4
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/manual/wide-gamut-canvas/resources/sRGB-BB0000.svg
@@ -0,0 +1,3 @@
+
+  
+
diff --git a/testing/web-platform/tests/html/canvas/element/manual/wide-gamut-canvas/resources/sRGB-BB0000.webm b/testing/web-platform/tests/html/canvas/element/manual/wide-gamut-canvas/resources/sRGB-BB0000.webm
new file mode 100644
index 0000000000..23a6364bdb
Binary files /dev/null and b/testing/web-platform/tests/html/canvas/element/manual/wide-gamut-canvas/resources/sRGB-BB0000.webm differ
diff --git a/testing/web-platform/tests/html/canvas/element/manual/wide-gamut-canvas/resources/sRGB-BB0000CC.png b/testing/web-platform/tests/html/canvas/element/manual/wide-gamut-canvas/resources/sRGB-BB0000CC.png
new file mode 100644
index 0000000000..fe463486ef
Binary files /dev/null and b/testing/web-platform/tests/html/canvas/element/manual/wide-gamut-canvas/resources/sRGB-BB0000CC.png differ
diff --git a/testing/web-platform/tests/html/canvas/element/manual/wide-gamut-canvas/resources/sRGB-BB0000FF.png b/testing/web-platform/tests/html/canvas/element/manual/wide-gamut-canvas/resources/sRGB-BB0000FF.png
new file mode 100644
index 0000000000..be7009f613
Binary files /dev/null and b/testing/web-platform/tests/html/canvas/element/manual/wide-gamut-canvas/resources/sRGB-BB0000FF.png differ
diff --git a/testing/web-platform/tests/html/canvas/element/manual/wide-gamut-canvas/resources/sRGB-BBBC00000000CCCC.png b/testing/web-platform/tests/html/canvas/element/manual/wide-gamut-canvas/resources/sRGB-BBBC00000000CCCC.png
new file mode 100644
index 0000000000..5220ccb7a9
Binary files /dev/null and b/testing/web-platform/tests/html/canvas/element/manual/wide-gamut-canvas/resources/sRGB-BBBC00000000CCCC.png differ
diff --git a/testing/web-platform/tests/html/canvas/element/manual/wide-gamut-canvas/resources/sRGB-BBBC00000000FFFF.png b/testing/web-platform/tests/html/canvas/element/manual/wide-gamut-canvas/resources/sRGB-BBBC00000000FFFF.png
new file mode 100644
index 0000000000..416ef12986
Binary files /dev/null and b/testing/web-platform/tests/html/canvas/element/manual/wide-gamut-canvas/resources/sRGB-BBBC00000000FFFF.png differ
diff --git a/testing/web-platform/tests/html/canvas/element/manual/wide-gamut-canvas/resources/sRGB-FF0000.svg b/testing/web-platform/tests/html/canvas/element/manual/wide-gamut-canvas/resources/sRGB-FF0000.svg
new file mode 100644
index 0000000000..8798fdfc3a
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/manual/wide-gamut-canvas/resources/sRGB-FF0000.svg
@@ -0,0 +1,3 @@
+
+  
+
diff --git a/testing/web-platform/tests/html/canvas/element/manual/wide-gamut-canvas/resources/sRGB-FF0000CC.png b/testing/web-platform/tests/html/canvas/element/manual/wide-gamut-canvas/resources/sRGB-FF0000CC.png
new file mode 100644
index 0000000000..e86f64b71b
Binary files /dev/null and b/testing/web-platform/tests/html/canvas/element/manual/wide-gamut-canvas/resources/sRGB-FF0000CC.png differ
diff --git a/testing/web-platform/tests/html/canvas/element/manual/wide-gamut-canvas/resources/sRGB-FF0000FF.png b/testing/web-platform/tests/html/canvas/element/manual/wide-gamut-canvas/resources/sRGB-FF0000FF.png
new file mode 100644
index 0000000000..22f33b14da
Binary files /dev/null and b/testing/web-platform/tests/html/canvas/element/manual/wide-gamut-canvas/resources/sRGB-FF0000FF.png differ
diff --git a/testing/web-platform/tests/html/canvas/element/manual/wide-gamut-canvas/resources/sRGB-FF0100.mp4 b/testing/web-platform/tests/html/canvas/element/manual/wide-gamut-canvas/resources/sRGB-FF0100.mp4
new file mode 100644
index 0000000000..37a29f9f83
Binary files /dev/null and b/testing/web-platform/tests/html/canvas/element/manual/wide-gamut-canvas/resources/sRGB-FF0100.mp4 differ
diff --git a/testing/web-platform/tests/html/canvas/element/manual/wide-gamut-canvas/resources/sRGB-FF0100.webm b/testing/web-platform/tests/html/canvas/element/manual/wide-gamut-canvas/resources/sRGB-FF0100.webm
new file mode 100644
index 0000000000..31b69af924
Binary files /dev/null and b/testing/web-platform/tests/html/canvas/element/manual/wide-gamut-canvas/resources/sRGB-FF0100.webm differ
diff --git a/testing/web-platform/tests/html/canvas/element/manual/wide-gamut-canvas/resources/sRGB-FFFF00000000CCCC.png b/testing/web-platform/tests/html/canvas/element/manual/wide-gamut-canvas/resources/sRGB-FFFF00000000CCCC.png
new file mode 100644
index 0000000000..e86f64b71b
Binary files /dev/null and b/testing/web-platform/tests/html/canvas/element/manual/wide-gamut-canvas/resources/sRGB-FFFF00000000CCCC.png differ
diff --git a/testing/web-platform/tests/html/canvas/element/manual/wide-gamut-canvas/resources/sRGB-FFFF00000000FFFF.png b/testing/web-platform/tests/html/canvas/element/manual/wide-gamut-canvas/resources/sRGB-FFFF00000000FFFF.png
new file mode 100644
index 0000000000..22f33b14da
Binary files /dev/null and b/testing/web-platform/tests/html/canvas/element/manual/wide-gamut-canvas/resources/sRGB-FFFF00000000FFFF.png differ
diff --git a/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.arc.angle.1.html b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.arc.angle.1.html
new file mode 100644
index 0000000000..85ebff4c0a
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.arc.angle.1.html
@@ -0,0 +1,33 @@
+
+
+Canvas test: 2d.path.arc.angle.1
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  2d.path.arc.angle.1
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  arc() draws pi/2 .. -pi anticlockwise correctly
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.arc.angle.2.html b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.arc.angle.2.html
new file mode 100644
index 0000000000..7eefabd993
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.arc.angle.2.html
@@ -0,0 +1,33 @@
+
+
+Canvas test: 2d.path.arc.angle.2
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    2d.path.arc.angle.2
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    arc() draws -3pi/2 .. -pi anticlockwise correctly
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.arc.angle.3.html b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.arc.angle.3.html
new file mode 100644
index 0000000000..899c50dc90
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.arc.angle.3.html
@@ -0,0 +1,33 @@
+
+
+Canvas test: 2d.path.arc.angle.3
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      2d.path.arc.angle.3
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      arc() wraps angles mod 2pi when anticlockwise and end > start+2pi
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.arc.angle.4.html b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.arc.angle.4.html
new file mode 100644
index 0000000000..3f1bd84d69
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.arc.angle.4.html
@@ -0,0 +1,36 @@
+
+
+Canvas test: 2d.path.arc.angle.4
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        2d.path.arc.angle.4
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        arc() draws a full circle when clockwise and end > start+2pi
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.arc.angle.5.html b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.arc.angle.5.html
new file mode 100644
index 0000000000..2373bd4f0a
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.arc.angle.5.html
@@ -0,0 +1,33 @@
+
+
+Canvas test: 2d.path.arc.angle.5
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          2d.path.arc.angle.5
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          arc() wraps angles mod 2pi when clockwise and start > end+2pi
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.arc.angle.6.html b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.arc.angle.6.html
new file mode 100644
index 0000000000..b0b03cff79
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.arc.angle.6.html
@@ -0,0 +1,36 @@
+
+
+Canvas test: 2d.path.arc.angle.6
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            2d.path.arc.angle.6
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            arc() draws a full circle when anticlockwise and start > end+2pi
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.arc.default.html b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.arc.default.html
new file mode 100644
index 0000000000..b52941fe3f
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.arc.default.html
@@ -0,0 +1,33 @@
+
+
+Canvas test: 2d.path.arc.default
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.path.arc.default
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              arc() with missing last argument defaults to clockwise
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.arc.empty.html b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.arc.empty.html
new file mode 100644
index 0000000000..295ee4bbb2
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.arc.empty.html
@@ -0,0 +1,33 @@
+
+
+Canvas test: 2d.path.arc.empty
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                2d.path.arc.empty
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                arc() with an empty path does not draw a straight line to the start point
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.arc.end.html b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.arc.end.html
new file mode 100644
index 0000000000..a581a40e8e
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.arc.end.html
@@ -0,0 +1,35 @@
+
+
+Canvas test: 2d.path.arc.end
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  2d.path.arc.end
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  arc() adds the end point of the arc to the subpath
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.arc.negative.html b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.arc.negative.html
new file mode 100644
index 0000000000..fd81ebadcd
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.arc.negative.html
@@ -0,0 +1,28 @@
+
+
+Canvas test: 2d.path.arc.negative
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    2d.path.arc.negative
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    arc() with negative radius throws INDEX_SIZE_ERR
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.arc.nonempty.html b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.arc.nonempty.html
new file mode 100644
index 0000000000..982829013d
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.arc.nonempty.html
@@ -0,0 +1,34 @@
+
+
+Canvas test: 2d.path.arc.nonempty
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      2d.path.arc.nonempty
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      arc() with a non-empty path does draw a straight line to the start point
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.arc.nonfinite.html b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.arc.nonfinite.html
new file mode 100644
index 0000000000..a1b15e7a88
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.arc.nonfinite.html
@@ -0,0 +1,76 @@
+
+
+Canvas test: 2d.path.arc.nonfinite
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        2d.path.arc.nonfinite
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        arc() with Infinity/NaN is ignored
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.arc.scale.1.html b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.arc.scale.1.html
new file mode 100644
index 0000000000..951c9ae26c
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.arc.scale.1.html
@@ -0,0 +1,53 @@
+
+
+Canvas test: 2d.path.arc.scale.1
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          2d.path.arc.scale.1
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          Non-uniformly scaled arcs are the right shape
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.arc.scale.2.html b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.arc.scale.2.html
new file mode 100644
index 0000000000..6b39e16222
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.arc.scale.2.html
@@ -0,0 +1,43 @@
+
+
+Canvas test: 2d.path.arc.scale.2
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            2d.path.arc.scale.2
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Highly scaled arcs are the right shape
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.arc.selfintersect.1.html b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.arc.selfintersect.1.html
new file mode 100644
index 0000000000..3bc81bd77a
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.arc.selfintersect.1.html
@@ -0,0 +1,37 @@
+
+
+Canvas test: 2d.path.arc.selfintersect.1
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.path.arc.selfintersect.1
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              arc() with lineWidth > 2*radius is drawn sensibly
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.arc.selfintersect.2.html b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.arc.selfintersect.2.html
new file mode 100644
index 0000000000..e3b14a782f
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.arc.selfintersect.2.html
@@ -0,0 +1,41 @@
+
+
+Canvas test: 2d.path.arc.selfintersect.2
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                2d.path.arc.selfintersect.2
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                arc() with lineWidth > 2*radius is drawn sensibly
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.arc.shape.1.html b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.arc.shape.1.html
new file mode 100644
index 0000000000..8a456841ad
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.arc.shape.1.html
@@ -0,0 +1,38 @@
+
+
+Canvas test: 2d.path.arc.shape.1
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  2d.path.arc.shape.1
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  arc() from 0 to pi does not draw anything in the wrong half
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.arc.shape.2.html b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.arc.shape.2.html
new file mode 100644
index 0000000000..f820eed761
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.arc.shape.2.html
@@ -0,0 +1,38 @@
+
+
+Canvas test: 2d.path.arc.shape.2
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    2d.path.arc.shape.2
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    arc() from 0 to pi draws stuff in the right half
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.arc.shape.3.html b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.arc.shape.3.html
new file mode 100644
index 0000000000..aa08d44194
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.arc.shape.3.html
@@ -0,0 +1,37 @@
+
+
+Canvas test: 2d.path.arc.shape.3
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      2d.path.arc.shape.3
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      arc() from 0 to -pi/2 does not draw anything in the wrong quadrant
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.arc.shape.4.html b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.arc.shape.4.html
new file mode 100644
index 0000000000..b00d4468f2
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.arc.shape.4.html
@@ -0,0 +1,37 @@
+
+
+Canvas test: 2d.path.arc.shape.4
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        2d.path.arc.shape.4
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        arc() from 0 to -pi/2 draws stuff in the right quadrant
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.arc.shape.5.html b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.arc.shape.5.html
new file mode 100644
index 0000000000..f5574d2773
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.arc.shape.5.html
@@ -0,0 +1,37 @@
+
+
+Canvas test: 2d.path.arc.shape.5
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          2d.path.arc.shape.5
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          arc() from 0 to 5pi does not draw crazy things
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.arc.twopie.1.html b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.arc.twopie.1.html
new file mode 100644
index 0000000000..6312efb3e8
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.arc.twopie.1.html
@@ -0,0 +1,33 @@
+
+
+Canvas test: 2d.path.arc.twopie.1
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            2d.path.arc.twopie.1
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            arc() draws nothing when end = start + 2pi-e and anticlockwise
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.arc.twopie.2.html b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.arc.twopie.2.html
new file mode 100644
index 0000000000..132c2d38dd
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.arc.twopie.2.html
@@ -0,0 +1,33 @@
+
+
+Canvas test: 2d.path.arc.twopie.2
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.path.arc.twopie.2
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              arc() draws a full circle when end = start + 2pi-e and clockwise
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.arc.twopie.3.html b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.arc.twopie.3.html
new file mode 100644
index 0000000000..204ed54a1e
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.arc.twopie.3.html
@@ -0,0 +1,33 @@
+
+
+Canvas test: 2d.path.arc.twopie.3
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                2d.path.arc.twopie.3
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                arc() draws a full circle when end = start + 2pi+e and anticlockwise
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.arc.twopie.4.html b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.arc.twopie.4.html
new file mode 100644
index 0000000000..d5535a7949
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.arc.twopie.4.html
@@ -0,0 +1,33 @@
+
+
+Canvas test: 2d.path.arc.twopie.4
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  2d.path.arc.twopie.4
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  arc() draws nothing when end = start + 2pi+e and clockwise
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.arc.zero.1.html b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.arc.zero.1.html
new file mode 100644
index 0000000000..2c93425b1e
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.arc.zero.1.html
@@ -0,0 +1,33 @@
+
+
+Canvas test: 2d.path.arc.zero.1
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    2d.path.arc.zero.1
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    arc() draws nothing when startAngle = endAngle and anticlockwise
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.arc.zero.2.html b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.arc.zero.2.html
new file mode 100644
index 0000000000..c290c2f32f
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.arc.zero.2.html
@@ -0,0 +1,33 @@
+
+
+Canvas test: 2d.path.arc.zero.2
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      2d.path.arc.zero.2
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      arc() draws nothing when startAngle = endAngle and clockwise
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.arc.zeroradius.html b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.arc.zeroradius.html
new file mode 100644
index 0000000000..f75403b2f3
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.arc.zeroradius.html
@@ -0,0 +1,34 @@
+
+
+Canvas test: 2d.path.arc.zeroradius
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        2d.path.arc.zeroradius
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        arc() with zero radius draws a line to the start point
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.arcTo.coincide.1.html b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.arcTo.coincide.1.html
new file mode 100644
index 0000000000..01c8091c46
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.arcTo.coincide.1.html
@@ -0,0 +1,45 @@
+
+
+Canvas test: 2d.path.arcTo.coincide.1
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          2d.path.arcTo.coincide.1
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          arcTo() has no effect if P0 = P1
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.arcTo.coincide.2.html b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.arcTo.coincide.2.html
new file mode 100644
index 0000000000..d216949aae
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.arcTo.coincide.2.html
@@ -0,0 +1,35 @@
+
+
+Canvas test: 2d.path.arcTo.coincide.2
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            2d.path.arcTo.coincide.2
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            arcTo() draws a straight line to P1 if P1 = P2
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.arcTo.collinear.1.html b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.arcTo.collinear.1.html
new file mode 100644
index 0000000000..e91e2e4b1b
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.arcTo.collinear.1.html
@@ -0,0 +1,42 @@
+
+
+Canvas test: 2d.path.arcTo.collinear.1
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.path.arcTo.collinear.1
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              arcTo() with all points on a line, and P1 between P0/P2, draws a straight line to P1
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.arcTo.collinear.2.html b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.arcTo.collinear.2.html
new file mode 100644
index 0000000000..97b1339295
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.arcTo.collinear.2.html
@@ -0,0 +1,42 @@
+
+
+Canvas test: 2d.path.arcTo.collinear.2
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                2d.path.arcTo.collinear.2
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                arcTo() with all points on a line, and P2 between P0/P1, draws a straight line to P1
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.arcTo.collinear.3.html b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.arcTo.collinear.3.html
new file mode 100644
index 0000000000..2f4394f038
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.arcTo.collinear.3.html
@@ -0,0 +1,47 @@
+
+
+Canvas test: 2d.path.arcTo.collinear.3
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  2d.path.arcTo.collinear.3
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  arcTo() with all points on a line, and P0 between P1/P2, draws a straight line to P1
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.arcTo.ensuresubpath.1.html b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.arcTo.ensuresubpath.1.html
new file mode 100644
index 0000000000..2781bcbba3
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.arcTo.ensuresubpath.1.html
@@ -0,0 +1,33 @@
+
+
+Canvas test: 2d.path.arcTo.ensuresubpath.1
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    2d.path.arcTo.ensuresubpath.1
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    If there is no subpath, the first control point is added (and nothing is drawn up to it)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.arcTo.ensuresubpath.2.html b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.arcTo.ensuresubpath.2.html
new file mode 100644
index 0000000000..f5da07c1c6
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.arcTo.ensuresubpath.2.html
@@ -0,0 +1,34 @@
+
+
+Canvas test: 2d.path.arcTo.ensuresubpath.2
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      2d.path.arcTo.ensuresubpath.2
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      If there is no subpath, the first control point is added
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.arcTo.negative.html b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.arcTo.negative.html
new file mode 100644
index 0000000000..0091ca2a67
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.arcTo.negative.html
@@ -0,0 +1,28 @@
+
+
+Canvas test: 2d.path.arcTo.negative
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        2d.path.arcTo.negative
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        arcTo() with negative radius throws an exception
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.arcTo.nonfinite.html b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.arcTo.nonfinite.html
new file mode 100644
index 0000000000..0d7be1d360
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.arcTo.nonfinite.html
@@ -0,0 +1,74 @@
+
+
+Canvas test: 2d.path.arcTo.nonfinite
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          2d.path.arcTo.nonfinite
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          arcTo() with Infinity/NaN is ignored
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.arcTo.scale.html b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.arcTo.scale.html
new file mode 100644
index 0000000000..6645f05260
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.arcTo.scale.html
@@ -0,0 +1,46 @@
+
+
+Canvas test: 2d.path.arcTo.scale
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            2d.path.arcTo.scale
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            arcTo scales the curve, not just the control points
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.arcTo.shape.curve1.html b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.arcTo.shape.curve1.html
new file mode 100644
index 0000000000..4617b2cbbb
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.arcTo.shape.curve1.html
@@ -0,0 +1,59 @@
+
+
+Canvas test: 2d.path.arcTo.shape.curve1
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.path.arcTo.shape.curve1
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              arcTo() curves in the right kind of shape
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.arcTo.shape.curve2.html b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.arcTo.shape.curve2.html
new file mode 100644
index 0000000000..bcc4326eea
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.arcTo.shape.curve2.html
@@ -0,0 +1,58 @@
+
+
+Canvas test: 2d.path.arcTo.shape.curve2
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                2d.path.arcTo.shape.curve2
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                arcTo() curves in the right kind of shape
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.arcTo.shape.end.html b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.arcTo.shape.end.html
new file mode 100644
index 0000000000..829c70f5f4
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.arcTo.shape.end.html
@@ -0,0 +1,39 @@
+
+
+Canvas test: 2d.path.arcTo.shape.end
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  2d.path.arcTo.shape.end
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  arcTo() does not draw anything from P1 to P2
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.arcTo.shape.start.html b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.arcTo.shape.start.html
new file mode 100644
index 0000000000..0abeedf433
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.arcTo.shape.start.html
@@ -0,0 +1,39 @@
+
+
+Canvas test: 2d.path.arcTo.shape.start
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    2d.path.arcTo.shape.start
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    arcTo() draws a straight line from P0 to P1
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.arcTo.transformation.html b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.arcTo.transformation.html
new file mode 100644
index 0000000000..5aa8562b1d
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.arcTo.transformation.html
@@ -0,0 +1,45 @@
+
+
+Canvas test: 2d.path.arcTo.transformation
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      2d.path.arcTo.transformation
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      arcTo joins up to the last subpath point correctly
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.arcTo.zero.1.html b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.arcTo.zero.1.html
new file mode 100644
index 0000000000..bb2cc1d3e3
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.arcTo.zero.1.html
@@ -0,0 +1,42 @@
+
+
+Canvas test: 2d.path.arcTo.zero.1
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        2d.path.arcTo.zero.1
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        arcTo() with zero radius draws a straight line from P0 to P1
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.arcTo.zero.2.html b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.arcTo.zero.2.html
new file mode 100644
index 0000000000..d2eeee535d
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.arcTo.zero.2.html
@@ -0,0 +1,42 @@
+
+
+Canvas test: 2d.path.arcTo.zero.2
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          2d.path.arcTo.zero.2
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          arcTo() with zero radius draws a straight line from P0 to P1, even when all points are collinear
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.beginPath.html b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.beginPath.html
new file mode 100644
index 0000000000..316f6af942
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.beginPath.html
@@ -0,0 +1,32 @@
+
+
+Canvas test: 2d.path.beginPath
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            2d.path.beginPath
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.bezierCurveTo.basic.html b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.bezierCurveTo.basic.html
new file mode 100644
index 0000000000..0c3d7f948b
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.bezierCurveTo.basic.html
@@ -0,0 +1,34 @@
+
+
+Canvas test: 2d.path.bezierCurveTo.basic
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.path.bezierCurveTo.basic
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.bezierCurveTo.ensuresubpath.1.html b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.bezierCurveTo.ensuresubpath.1.html
new file mode 100644
index 0000000000..ebcce3f48c
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.bezierCurveTo.ensuresubpath.1.html
@@ -0,0 +1,34 @@
+
+
+Canvas test: 2d.path.bezierCurveTo.ensuresubpath.1
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                2d.path.bezierCurveTo.ensuresubpath.1
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                If there is no subpath, the first control point is added (and nothing is drawn up to it)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.bezierCurveTo.ensuresubpath.2.html b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.bezierCurveTo.ensuresubpath.2.html
new file mode 100644
index 0000000000..c269b72d33
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.bezierCurveTo.ensuresubpath.2.html
@@ -0,0 +1,34 @@
+
+
+Canvas test: 2d.path.bezierCurveTo.ensuresubpath.2
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  2d.path.bezierCurveTo.ensuresubpath.2
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  If there is no subpath, the first control point is added
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.bezierCurveTo.nonfinite.html b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.bezierCurveTo.nonfinite.html
new file mode 100644
index 0000000000..6278a67283
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.bezierCurveTo.nonfinite.html
@@ -0,0 +1,108 @@
+
+
+Canvas test: 2d.path.bezierCurveTo.nonfinite
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    2d.path.bezierCurveTo.nonfinite
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    bezierCurveTo() with Infinity/NaN is ignored
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.bezierCurveTo.scaled.html b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.bezierCurveTo.scaled.html
new file mode 100644
index 0000000000..e7a5d8b524
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.bezierCurveTo.scaled.html
@@ -0,0 +1,39 @@
+
+
+Canvas test: 2d.path.bezierCurveTo.scaled
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      2d.path.bezierCurveTo.scaled
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.bezierCurveTo.shape.html b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.bezierCurveTo.shape.html
new file mode 100644
index 0000000000..cbc2824425
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.bezierCurveTo.shape.html
@@ -0,0 +1,38 @@
+
+
+Canvas test: 2d.path.bezierCurveTo.shape
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        2d.path.bezierCurveTo.shape
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.clip.basic.1.html b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.clip.basic.1.html
new file mode 100644
index 0000000000..a5515e4f7e
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.clip.basic.1.html
@@ -0,0 +1,36 @@
+
+
+Canvas test: 2d.path.clip.basic.1
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          2d.path.clip.basic.1
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.clip.basic.2.html b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.clip.basic.2.html
new file mode 100644
index 0000000000..27e1ad0b0c
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.clip.basic.2.html
@@ -0,0 +1,36 @@
+
+
+Canvas test: 2d.path.clip.basic.2
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            2d.path.clip.basic.2
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.clip.empty.html b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.clip.empty.html
new file mode 100644
index 0000000000..17208ad797
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.clip.empty.html
@@ -0,0 +1,35 @@
+
+
+Canvas test: 2d.path.clip.empty
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.path.clip.empty
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.clip.intersect.html b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.clip.intersect.html
new file mode 100644
index 0000000000..c1057f2645
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.clip.intersect.html
@@ -0,0 +1,39 @@
+
+
+Canvas test: 2d.path.clip.intersect
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                2d.path.clip.intersect
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.clip.unaffected.html b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.clip.unaffected.html
new file mode 100644
index 0000000000..66f0379602
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.clip.unaffected.html
@@ -0,0 +1,41 @@
+
+
+Canvas test: 2d.path.clip.unaffected
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  2d.path.clip.unaffected
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.clip.winding.1.html b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.clip.winding.1.html
new file mode 100644
index 0000000000..46e4db9b6c
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.clip.winding.1.html
@@ -0,0 +1,44 @@
+
+
+Canvas test: 2d.path.clip.winding.1
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    2d.path.clip.winding.1
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.clip.winding.2.html b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.clip.winding.2.html
new file mode 100644
index 0000000000..9341353a8d
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.clip.winding.2.html
@@ -0,0 +1,48 @@
+
+
+Canvas test: 2d.path.clip.winding.2
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      2d.path.clip.winding.2
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.closePath.empty.html b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.closePath.empty.html
new file mode 100644
index 0000000000..898cdc5fa6
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.closePath.empty.html
@@ -0,0 +1,31 @@
+
+
+Canvas test: 2d.path.closePath.empty
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        2d.path.closePath.empty
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.closePath.newline.html b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.closePath.newline.html
new file mode 100644
index 0000000000..07ec4b2a82
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.closePath.newline.html
@@ -0,0 +1,36 @@
+
+
+Canvas test: 2d.path.closePath.newline
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          2d.path.closePath.newline
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.closePath.nextpoint.html b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.closePath.nextpoint.html
new file mode 100644
index 0000000000..648d7ad37a
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.closePath.nextpoint.html
@@ -0,0 +1,35 @@
+
+
+Canvas test: 2d.path.closePath.nextpoint
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            2d.path.closePath.nextpoint
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.ellipse.basics.html b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.ellipse.basics.html
new file mode 100644
index 0000000000..d46dc31d26
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.ellipse.basics.html
@@ -0,0 +1,32 @@
+
+
+Canvas test: 2d.path.ellipse.basics
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.path.ellipse.basics
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Verify canvas throws error when drawing ellipse with negative radii.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.fill.closed.basic.html b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.fill.closed.basic.html
new file mode 100644
index 0000000000..010dbf43e1
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.fill.closed.basic.html
@@ -0,0 +1,36 @@
+
+
+Canvas test: 2d.path.fill.closed.basic
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                2d.path.fill.closed.basic
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.fill.closed.unaffected.html b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.fill.closed.unaffected.html
new file mode 100644
index 0000000000..e00a6c8f55
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.fill.closed.unaffected.html
@@ -0,0 +1,39 @@
+
+
+Canvas test: 2d.path.fill.closed.unaffected
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  2d.path.fill.closed.unaffected
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.fill.overlap.html b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.fill.overlap.html
new file mode 100644
index 0000000000..08782ed11e
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.fill.overlap.html
@@ -0,0 +1,35 @@
+
+
+Canvas test: 2d.path.fill.overlap
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    2d.path.fill.overlap
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.fill.overlap.png b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.fill.overlap.png
new file mode 100644
index 0000000000..e2a35d48d4
Binary files /dev/null and b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.fill.overlap.png differ
diff --git a/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.fill.winding.add.html b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.fill.winding.add.html
new file mode 100644
index 0000000000..ef9a2a0f93
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.fill.winding.add.html
@@ -0,0 +1,41 @@
+
+
+Canvas test: 2d.path.fill.winding.add
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      2d.path.fill.winding.add
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.fill.winding.subtract.1.html b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.fill.winding.subtract.1.html
new file mode 100644
index 0000000000..eecf0198e2
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.fill.winding.subtract.1.html
@@ -0,0 +1,41 @@
+
+
+Canvas test: 2d.path.fill.winding.subtract.1
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        2d.path.fill.winding.subtract.1
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.fill.winding.subtract.2.html b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.fill.winding.subtract.2.html
new file mode 100644
index 0000000000..cf8b6a6ce9
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.fill.winding.subtract.2.html
@@ -0,0 +1,40 @@
+
+
+Canvas test: 2d.path.fill.winding.subtract.2
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          2d.path.fill.winding.subtract.2
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.fill.winding.subtract.3.html b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.fill.winding.subtract.3.html
new file mode 100644
index 0000000000..e056e33003
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.fill.winding.subtract.3.html
@@ -0,0 +1,46 @@
+
+
+Canvas test: 2d.path.fill.winding.subtract.3
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            2d.path.fill.winding.subtract.3
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.initial.html b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.initial.html
new file mode 100644
index 0000000000..a3de93a799
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.initial.html
@@ -0,0 +1,31 @@
+
+
+Canvas test: 2d.path.initial
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.path.initial
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.isPointInPath.arc.html b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.isPointInPath.arc.html
new file mode 100644
index 0000000000..bc4bc560e5
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.isPointInPath.arc.html
@@ -0,0 +1,34 @@
+
+
+Canvas test: 2d.path.isPointInPath.arc
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                2d.path.isPointInPath.arc
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                isPointInPath() works on arcs
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.isPointInPath.basic.1.html b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.isPointInPath.basic.1.html
new file mode 100644
index 0000000000..22562c60a2
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.isPointInPath.basic.1.html
@@ -0,0 +1,28 @@
+
+
+Canvas test: 2d.path.isPointInPath.basic.1
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  2d.path.isPointInPath.basic.1
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  isPointInPath() detects whether the point is inside the path
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.isPointInPath.basic.2.html b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.isPointInPath.basic.2.html
new file mode 100644
index 0000000000..9fc1060df8
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.isPointInPath.basic.2.html
@@ -0,0 +1,28 @@
+
+
+Canvas test: 2d.path.isPointInPath.basic.2
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    2d.path.isPointInPath.basic.2
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    isPointInPath() detects whether the point is inside the path
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.isPointInPath.basic.html b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.isPointInPath.basic.html
new file mode 100644
index 0000000000..5e3edfcc80
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.isPointInPath.basic.html
@@ -0,0 +1,65 @@
+
+
+Canvas test: 2d.path.isPointInPath.basic
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      2d.path.isPointInPath.basic
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      Verify the winding rule in isPointInPath works for for rect path.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.isPointInPath.bezier.html b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.isPointInPath.bezier.html
new file mode 100644
index 0000000000..b2f2d23724
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.isPointInPath.bezier.html
@@ -0,0 +1,47 @@
+
+
+Canvas test: 2d.path.isPointInPath.bezier
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        2d.path.isPointInPath.bezier
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        isPointInPath() works on Bezier curves
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.isPointInPath.bigarc.html b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.isPointInPath.bigarc.html
new file mode 100644
index 0000000000..77cb495137
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.isPointInPath.bigarc.html
@@ -0,0 +1,34 @@
+
+
+Canvas test: 2d.path.isPointInPath.bigarc
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          2d.path.isPointInPath.bigarc
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          isPointInPath() works on unclosed arcs larger than 2pi
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.isPointInPath.edge.html b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.isPointInPath.edge.html
new file mode 100644
index 0000000000..b00da5a2a7
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.isPointInPath.edge.html
@@ -0,0 +1,38 @@
+
+
+Canvas test: 2d.path.isPointInPath.edge
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            2d.path.isPointInPath.edge
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            isPointInPath() counts points on the path as being inside
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.isPointInPath.empty.html b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.isPointInPath.empty.html
new file mode 100644
index 0000000000..3edfe01a2a
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.isPointInPath.empty.html
@@ -0,0 +1,26 @@
+
+
+Canvas test: 2d.path.isPointInPath.empty
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.path.isPointInPath.empty
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              isPointInPath() works when there is no path
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.isPointInPath.nonfinite.html b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.isPointInPath.nonfinite.html
new file mode 100644
index 0000000000..4ef541a431
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.isPointInPath.nonfinite.html
@@ -0,0 +1,33 @@
+
+
+Canvas test: 2d.path.isPointInPath.nonfinite
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                2d.path.isPointInPath.nonfinite
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                isPointInPath() returns false for non-finite arguments
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.isPointInPath.outside.html b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.isPointInPath.outside.html
new file mode 100644
index 0000000000..6431879eb6
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.isPointInPath.outside.html
@@ -0,0 +1,33 @@
+
+
+Canvas test: 2d.path.isPointInPath.outside
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  2d.path.isPointInPath.outside
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  isPointInPath() works on paths outside the canvas
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.isPointInPath.subpath.html b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.isPointInPath.subpath.html
new file mode 100644
index 0000000000..5d664557d8
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.isPointInPath.subpath.html
@@ -0,0 +1,33 @@
+
+
+Canvas test: 2d.path.isPointInPath.subpath
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    2d.path.isPointInPath.subpath
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    isPointInPath() uses the current path, not just the subpath
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.isPointInPath.transform.1.html b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.isPointInPath.transform.1.html
new file mode 100644
index 0000000000..7268c3255f
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.isPointInPath.transform.1.html
@@ -0,0 +1,33 @@
+
+
+Canvas test: 2d.path.isPointInPath.transform.1
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      2d.path.isPointInPath.transform.1
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      isPointInPath() handles transformations correctly
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.isPointInPath.transform.2.html b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.isPointInPath.transform.2.html
new file mode 100644
index 0000000000..3adac7a419
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.isPointInPath.transform.2.html
@@ -0,0 +1,33 @@
+
+
+Canvas test: 2d.path.isPointInPath.transform.2
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        2d.path.isPointInPath.transform.2
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        isPointInPath() handles transformations correctly
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.isPointInPath.transform.3.html b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.isPointInPath.transform.3.html
new file mode 100644
index 0000000000..8769c8a593
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.isPointInPath.transform.3.html
@@ -0,0 +1,33 @@
+
+
+Canvas test: 2d.path.isPointInPath.transform.3
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          2d.path.isPointInPath.transform.3
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          isPointInPath() handles transformations correctly
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.isPointInPath.transform.4.html b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.isPointInPath.transform.4.html
new file mode 100644
index 0000000000..1bcc0bc3a3
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.isPointInPath.transform.4.html
@@ -0,0 +1,31 @@
+
+
+Canvas test: 2d.path.isPointInPath.transform.4
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            2d.path.isPointInPath.transform.4
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            isPointInPath() handles transformations correctly
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.isPointInPath.unclosed.html b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.isPointInPath.unclosed.html
new file mode 100644
index 0000000000..2e3b711129
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.isPointInPath.unclosed.html
@@ -0,0 +1,31 @@
+
+
+Canvas test: 2d.path.isPointInPath.unclosed
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.path.isPointInPath.unclosed
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              isPointInPath() works on unclosed subpaths
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.isPointInPath.winding.html b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.isPointInPath.winding.html
new file mode 100644
index 0000000000..ec22570797
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.isPointInPath.winding.html
@@ -0,0 +1,46 @@
+
+
+Canvas test: 2d.path.isPointInPath.winding
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                2d.path.isPointInPath.winding
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                isPointInPath() uses the non-zero winding number rule
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.isPointInStroke.scaleddashes.html b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.isPointInStroke.scaleddashes.html
new file mode 100644
index 0000000000..e27baa1549
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.isPointInStroke.scaleddashes.html
@@ -0,0 +1,39 @@
+
+
+Canvas test: 2d.path.isPointInStroke.scaleddashes
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  2d.path.isPointInStroke.scaleddashes
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  isPointInStroke() should return correct results on dashed paths at high scale factors
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.isPointInpath.invalid.html b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.isPointInpath.invalid.html
new file mode 100644
index 0000000000..301c7c447d
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.isPointInpath.invalid.html
@@ -0,0 +1,50 @@
+
+
+Canvas test: 2d.path.isPointInpath.invalid
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    2d.path.isPointInpath.invalid
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    Verify isPointInPath throws exceptions with invalid inputs.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.isPointInpath.multi.path.html b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.isPointInpath.multi.path.html
new file mode 100644
index 0000000000..d71bd8a4c4
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.isPointInpath.multi.path.html
@@ -0,0 +1,48 @@
+
+
+Canvas test: 2d.path.isPointInpath.multi.path
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      2d.path.isPointInpath.multi.path
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      Verify the winding rule in isPointInPath works for path object.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.lineTo.basic.html b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.lineTo.basic.html
new file mode 100644
index 0000000000..c6f2caa196
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.lineTo.basic.html
@@ -0,0 +1,34 @@
+
+
+Canvas test: 2d.path.lineTo.basic
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        2d.path.lineTo.basic
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.lineTo.ensuresubpath.1.html b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.lineTo.ensuresubpath.1.html
new file mode 100644
index 0000000000..ada8f0ca29
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.lineTo.ensuresubpath.1.html
@@ -0,0 +1,33 @@
+
+
+Canvas test: 2d.path.lineTo.ensuresubpath.1
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          2d.path.lineTo.ensuresubpath.1
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          If there is no subpath, the point is added and nothing is drawn
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.lineTo.ensuresubpath.2.html b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.lineTo.ensuresubpath.2.html
new file mode 100644
index 0000000000..ac1f9238ff
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.lineTo.ensuresubpath.2.html
@@ -0,0 +1,34 @@
+
+
+Canvas test: 2d.path.lineTo.ensuresubpath.2
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            2d.path.lineTo.ensuresubpath.2
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            If there is no subpath, the point is added and used for subsequent drawing
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.lineTo.nextpoint.html b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.lineTo.nextpoint.html
new file mode 100644
index 0000000000..f403c6b508
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.lineTo.nextpoint.html
@@ -0,0 +1,35 @@
+
+
+Canvas test: 2d.path.lineTo.nextpoint
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.path.lineTo.nextpoint
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.lineTo.nonfinite.details.html b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.lineTo.nonfinite.details.html
new file mode 100644
index 0000000000..d7595db7d1
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.lineTo.nonfinite.details.html
@@ -0,0 +1,30 @@
+
+
+Canvas test: 2d.path.lineTo.nonfinite.details
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                2d.path.lineTo.nonfinite.details
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                lineTo() with Infinity/NaN for first arg still converts the second arg
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.lineTo.nonfinite.html b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.lineTo.nonfinite.html
new file mode 100644
index 0000000000..8246064ea3
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.lineTo.nonfinite.html
@@ -0,0 +1,40 @@
+
+
+Canvas test: 2d.path.lineTo.nonfinite
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  2d.path.lineTo.nonfinite
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  lineTo() with Infinity/NaN is ignored
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.moveTo.basic.html b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.moveTo.basic.html
new file mode 100644
index 0000000000..d08d67621e
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.moveTo.basic.html
@@ -0,0 +1,35 @@
+
+
+Canvas test: 2d.path.moveTo.basic
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    2d.path.moveTo.basic
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.moveTo.multiple.html b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.moveTo.multiple.html
new file mode 100644
index 0000000000..384d9fb437
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.moveTo.multiple.html
@@ -0,0 +1,35 @@
+
+
+Canvas test: 2d.path.moveTo.multiple
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      2d.path.moveTo.multiple
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.moveTo.newsubpath.html b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.moveTo.newsubpath.html
new file mode 100644
index 0000000000..2a3d69b637
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.moveTo.newsubpath.html
@@ -0,0 +1,35 @@
+
+
+Canvas test: 2d.path.moveTo.newsubpath
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        2d.path.moveTo.newsubpath
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.moveTo.nonfinite.html b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.moveTo.nonfinite.html
new file mode 100644
index 0000000000..c6cd6f8178
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.moveTo.nonfinite.html
@@ -0,0 +1,39 @@
+
+
+Canvas test: 2d.path.moveTo.nonfinite
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          2d.path.moveTo.nonfinite
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          moveTo() with Infinity/NaN is ignored
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.quadraticCurveTo.basic.html b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.quadraticCurveTo.basic.html
new file mode 100644
index 0000000000..ffbf039440
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.quadraticCurveTo.basic.html
@@ -0,0 +1,34 @@
+
+
+Canvas test: 2d.path.quadraticCurveTo.basic
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            2d.path.quadraticCurveTo.basic
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.quadraticCurveTo.ensuresubpath.1.html b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.quadraticCurveTo.ensuresubpath.1.html
new file mode 100644
index 0000000000..f8b8b515ba
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.quadraticCurveTo.ensuresubpath.1.html
@@ -0,0 +1,34 @@
+
+
+Canvas test: 2d.path.quadraticCurveTo.ensuresubpath.1
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.path.quadraticCurveTo.ensuresubpath.1
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              If there is no subpath, the first control point is added (and nothing is drawn up to it)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.quadraticCurveTo.ensuresubpath.2.html b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.quadraticCurveTo.ensuresubpath.2.html
new file mode 100644
index 0000000000..189c744c65
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.quadraticCurveTo.ensuresubpath.2.html
@@ -0,0 +1,34 @@
+
+
+Canvas test: 2d.path.quadraticCurveTo.ensuresubpath.2
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                2d.path.quadraticCurveTo.ensuresubpath.2
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                If there is no subpath, the first control point is added
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.quadraticCurveTo.nonfinite.html b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.quadraticCurveTo.nonfinite.html
new file mode 100644
index 0000000000..1488e78a00
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.quadraticCurveTo.nonfinite.html
@@ -0,0 +1,56 @@
+
+
+Canvas test: 2d.path.quadraticCurveTo.nonfinite
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  2d.path.quadraticCurveTo.nonfinite
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  quadraticCurveTo() with Infinity/NaN is ignored
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.quadraticCurveTo.scaled.html b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.quadraticCurveTo.scaled.html
new file mode 100644
index 0000000000..90973a8f97
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.quadraticCurveTo.scaled.html
@@ -0,0 +1,39 @@
+
+
+Canvas test: 2d.path.quadraticCurveTo.scaled
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    2d.path.quadraticCurveTo.scaled
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.quadraticCurveTo.shape.html b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.quadraticCurveTo.shape.html
new file mode 100644
index 0000000000..23725c2421
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.quadraticCurveTo.shape.html
@@ -0,0 +1,38 @@
+
+
+Canvas test: 2d.path.quadraticCurveTo.shape
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      2d.path.quadraticCurveTo.shape
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.rect.basic.html b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.rect.basic.html
new file mode 100644
index 0000000000..716cd29af7
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.rect.basic.html
@@ -0,0 +1,31 @@
+
+
+Canvas test: 2d.path.rect.basic
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        2d.path.rect.basic
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.rect.closed.html b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.rect.closed.html
new file mode 100644
index 0000000000..385a88ab7e
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.rect.closed.html
@@ -0,0 +1,33 @@
+
+
+Canvas test: 2d.path.rect.closed
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          2d.path.rect.closed
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.rect.end.1.html b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.rect.end.1.html
new file mode 100644
index 0000000000..e1fd8052d8
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.rect.end.1.html
@@ -0,0 +1,33 @@
+
+
+Canvas test: 2d.path.rect.end.1
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            2d.path.rect.end.1
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.rect.end.2.html b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.rect.end.2.html
new file mode 100644
index 0000000000..d30bb111f1
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.rect.end.2.html
@@ -0,0 +1,38 @@
+
+
+Canvas test: 2d.path.rect.end.2
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.path.rect.end.2
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.rect.negative.html b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.rect.negative.html
new file mode 100644
index 0000000000..b917137bae
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.rect.negative.html
@@ -0,0 +1,38 @@
+
+
+Canvas test: 2d.path.rect.negative
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                2d.path.rect.negative
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.rect.newsubpath.html b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.rect.newsubpath.html
new file mode 100644
index 0000000000..32b70ff2d8
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.rect.newsubpath.html
@@ -0,0 +1,35 @@
+
+
+Canvas test: 2d.path.rect.newsubpath
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  2d.path.rect.newsubpath
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.rect.nonfinite.html b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.rect.nonfinite.html
new file mode 100644
index 0000000000..c0d245a49c
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.rect.nonfinite.html
@@ -0,0 +1,56 @@
+
+
+Canvas test: 2d.path.rect.nonfinite
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    2d.path.rect.nonfinite
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    rect() with Infinity/NaN is ignored
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.rect.selfintersect.html b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.rect.selfintersect.html
new file mode 100644
index 0000000000..8ebbf0c1f5
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.rect.selfintersect.html
@@ -0,0 +1,33 @@
+
+
+Canvas test: 2d.path.rect.selfintersect
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      2d.path.rect.selfintersect
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.rect.winding.html b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.rect.winding.html
new file mode 100644
index 0000000000..d7350ef38c
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.rect.winding.html
@@ -0,0 +1,38 @@
+
+
+Canvas test: 2d.path.rect.winding
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        2d.path.rect.winding
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.rect.zero.1.html b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.rect.zero.1.html
new file mode 100644
index 0000000000..c773ef61d0
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.rect.zero.1.html
@@ -0,0 +1,33 @@
+
+
+Canvas test: 2d.path.rect.zero.1
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          2d.path.rect.zero.1
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.rect.zero.2.html b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.rect.zero.2.html
new file mode 100644
index 0000000000..5888231fc6
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.rect.zero.2.html
@@ -0,0 +1,33 @@
+
+
+Canvas test: 2d.path.rect.zero.2
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            2d.path.rect.zero.2
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.rect.zero.3.html b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.rect.zero.3.html
new file mode 100644
index 0000000000..c000b008fb
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.rect.zero.3.html
@@ -0,0 +1,33 @@
+
+
+Canvas test: 2d.path.rect.zero.3
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.path.rect.zero.3
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.rect.zero.4.html b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.rect.zero.4.html
new file mode 100644
index 0000000000..bb3ecb3aa5
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.rect.zero.4.html
@@ -0,0 +1,33 @@
+
+
+Canvas test: 2d.path.rect.zero.4
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                2d.path.rect.zero.4
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.rect.zero.5.html b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.rect.zero.5.html
new file mode 100644
index 0000000000..081c753d91
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.rect.zero.5.html
@@ -0,0 +1,33 @@
+
+
+Canvas test: 2d.path.rect.zero.5
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  2d.path.rect.zero.5
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.rect.zero.6.html b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.rect.zero.6.html
new file mode 100644
index 0000000000..dafb273d56
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.rect.zero.6.html
@@ -0,0 +1,35 @@
+
+
+Canvas test: 2d.path.rect.zero.6
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    2d.path.rect.zero.6
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.roundrect.1.radius.dompoint.html b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.roundrect.1.radius.dompoint.html
new file mode 100644
index 0000000000..3bb890ae96
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.roundrect.1.radius.dompoint.html
@@ -0,0 +1,54 @@
+
+
+Canvas test: 2d.path.roundrect.1.radius.dompoint
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      2d.path.roundrect.1.radius.dompoint
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      Verify that when one radius is given to roundRect(), specified as a DOMPoint, it applies to all corners.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.roundrect.1.radius.dompoint.single argument.html b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.roundrect.1.radius.dompoint.single argument.html
new file mode 100644
index 0000000000..96e933870b
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.roundrect.1.radius.dompoint.single argument.html	
@@ -0,0 +1,54 @@
+
+
+Canvas test: 2d.path.roundrect.1.radius.dompoint.single argument
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        2d.path.roundrect.1.radius.dompoint.single argument
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        Verify that when one radius is given to roundRect() as a non-array argument, specified as a DOMPoint, it applies to all corners.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.roundrect.1.radius.dompointinit.html b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.roundrect.1.radius.dompointinit.html
new file mode 100644
index 0000000000..1315233d79
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.roundrect.1.radius.dompointinit.html
@@ -0,0 +1,54 @@
+
+
+Canvas test: 2d.path.roundrect.1.radius.dompointinit
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          2d.path.roundrect.1.radius.dompointinit
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          Verify that when one radius is given to roundRect(), specified as a DOMPointInit, applies to all corners.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.roundrect.1.radius.dompointinit.single.argument.html b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.roundrect.1.radius.dompointinit.single.argument.html
new file mode 100644
index 0000000000..f5c6d00959
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.roundrect.1.radius.dompointinit.single.argument.html
@@ -0,0 +1,54 @@
+
+
+Canvas test: 2d.path.roundrect.1.radius.dompointinit.single.argument
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            2d.path.roundrect.1.radius.dompointinit.single.argument
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Verify that when one radius is given to roundRect() as a non-array argument, specified as a DOMPointInit, applies to all corners.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.roundrect.1.radius.double.html b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.roundrect.1.radius.double.html
new file mode 100644
index 0000000000..402631a7a0
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.roundrect.1.radius.double.html
@@ -0,0 +1,34 @@
+
+
+Canvas test: 2d.path.roundrect.1.radius.double
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.path.roundrect.1.radius.double
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Verify that when one radius is given to roundRect(), specified as a double, it applies to all corners.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.roundrect.1.radius.double.single.argument.html b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.roundrect.1.radius.double.single.argument.html
new file mode 100644
index 0000000000..ed4887c2de
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.roundrect.1.radius.double.single.argument.html
@@ -0,0 +1,34 @@
+
+
+Canvas test: 2d.path.roundrect.1.radius.double.single.argument
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                2d.path.roundrect.1.radius.double.single.argument
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                Verify that when one radius is given to roundRect() as a non-array argument, specified as a double, it applies to all corners.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.roundrect.2.radii.1.dompoint.html b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.roundrect.2.radii.1.dompoint.html
new file mode 100644
index 0000000000..00a9c14582
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.roundrect.2.radii.1.dompoint.html
@@ -0,0 +1,46 @@
+
+
+Canvas test: 2d.path.roundrect.2.radii.1.dompoint
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  2d.path.roundrect.2.radii.1.dompoint
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Verify that when two radii are given to roundRect(), the first radius, specified as a DOMPoint, applies to the top-left and bottom-right corners.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.roundrect.2.radii.1.dompointinit.html b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.roundrect.2.radii.1.dompointinit.html
new file mode 100644
index 0000000000..e9b3a7bf79
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.roundrect.2.radii.1.dompointinit.html
@@ -0,0 +1,46 @@
+
+
+Canvas test: 2d.path.roundrect.2.radii.1.dompointinit
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    2d.path.roundrect.2.radii.1.dompointinit
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    Verify that when two radii are given to roundRect(), the first radius, specified as a DOMPointInit, applies to the top-left and bottom-right corners.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.roundrect.2.radii.1.double.html b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.roundrect.2.radii.1.double.html
new file mode 100644
index 0000000000..a2f02104e2
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.roundrect.2.radii.1.double.html
@@ -0,0 +1,34 @@
+
+
+Canvas test: 2d.path.roundrect.2.radii.1.double
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      2d.path.roundrect.2.radii.1.double
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      Verify that when two radii are given to roundRect(), the first radius, specified as a double, applies to the top-left and bottom-right corners.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.roundrect.2.radii.2.dompoint.html b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.roundrect.2.radii.2.dompoint.html
new file mode 100644
index 0000000000..57df30d5ae
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.roundrect.2.radii.2.dompoint.html
@@ -0,0 +1,46 @@
+
+
+Canvas test: 2d.path.roundrect.2.radii.2.dompoint
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        2d.path.roundrect.2.radii.2.dompoint
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        Verify that when two radii are given to roundRect(), the second radius, specified as a DOMPoint, applies to the top-right and bottom-left corners.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.roundrect.2.radii.2.dompointinit.html b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.roundrect.2.radii.2.dompointinit.html
new file mode 100644
index 0000000000..5942ab750f
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.roundrect.2.radii.2.dompointinit.html
@@ -0,0 +1,46 @@
+
+
+Canvas test: 2d.path.roundrect.2.radii.2.dompointinit
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          2d.path.roundrect.2.radii.2.dompointinit
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          Verify that when two radii are given to roundRect(), the second radius, specified as a DOMPointInit, applies to the top-right and bottom-left corners.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.roundrect.2.radii.2.double.html b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.roundrect.2.radii.2.double.html
new file mode 100644
index 0000000000..2390a61dfd
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.roundrect.2.radii.2.double.html
@@ -0,0 +1,34 @@
+
+
+Canvas test: 2d.path.roundrect.2.radii.2.double
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            2d.path.roundrect.2.radii.2.double
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Verify that when two radii are given to roundRect(), the second radius, specified as a double, applies to the top-right and bottom-left corners.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.roundrect.3.radii.1.dompoint.html b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.roundrect.3.radii.1.dompoint.html
new file mode 100644
index 0000000000..f4fa76afac
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.roundrect.3.radii.1.dompoint.html
@@ -0,0 +1,41 @@
+
+
+Canvas test: 2d.path.roundrect.3.radii.1.dompoint
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.path.roundrect.3.radii.1.dompoint
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Verify that when three radii are given to roundRect(), the first radius, specified as a DOMPoint, applies to the top-left corner.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.roundrect.3.radii.1.dompointinit.html b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.roundrect.3.radii.1.dompointinit.html
new file mode 100644
index 0000000000..4e7dc947f4
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.roundrect.3.radii.1.dompointinit.html
@@ -0,0 +1,41 @@
+
+
+Canvas test: 2d.path.roundrect.3.radii.1.dompointinit
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                2d.path.roundrect.3.radii.1.dompointinit
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                Verify that when three radii are given to roundRect(), the first radius, specified as a DOMPointInit, applies to the top-left corner.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.roundrect.3.radii.1.double.html b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.roundrect.3.radii.1.double.html
new file mode 100644
index 0000000000..d7888da6d9
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.roundrect.3.radii.1.double.html
@@ -0,0 +1,34 @@
+
+
+Canvas test: 2d.path.roundrect.3.radii.1.double
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  2d.path.roundrect.3.radii.1.double
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Verify that when three radii are given to roundRect(), the first radius, specified as a double, applies to the top-left corner.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.roundrect.3.radii.2.dompoint.html b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.roundrect.3.radii.2.dompoint.html
new file mode 100644
index 0000000000..38a8baac53
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.roundrect.3.radii.2.dompoint.html
@@ -0,0 +1,46 @@
+
+
+Canvas test: 2d.path.roundrect.3.radii.2.dompoint
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    2d.path.roundrect.3.radii.2.dompoint
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    Verify that when three radii are given to roundRect(), the second radius, specified as a DOMPoint, applies to the top-right and bottom-left corners.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.roundrect.3.radii.2.dompointinit.html b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.roundrect.3.radii.2.dompointinit.html
new file mode 100644
index 0000000000..5e867caf42
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.roundrect.3.radii.2.dompointinit.html
@@ -0,0 +1,46 @@
+
+
+Canvas test: 2d.path.roundrect.3.radii.2.dompointinit
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      2d.path.roundrect.3.radii.2.dompointinit
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      Verify that when three radii are given to roundRect(), the second radius, specified as a DOMPoint, applies to the top-right and bottom-left corners.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.roundrect.3.radii.2.double.html b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.roundrect.3.radii.2.double.html
new file mode 100644
index 0000000000..41edff205c
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.roundrect.3.radii.2.double.html
@@ -0,0 +1,34 @@
+
+
+Canvas test: 2d.path.roundrect.3.radii.2.double
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        2d.path.roundrect.3.radii.2.double
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        Verify that when three radii are given to roundRect(), the second radius, specified as a double, applies to the top-right and bottom-left corners.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.roundrect.3.radii.3.dompoint.html b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.roundrect.3.radii.3.dompoint.html
new file mode 100644
index 0000000000..6d6a1a6ae0
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.roundrect.3.radii.3.dompoint.html
@@ -0,0 +1,41 @@
+
+
+Canvas test: 2d.path.roundrect.3.radii.3.dompoint
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          2d.path.roundrect.3.radii.3.dompoint
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          Verify that when three radii are given to roundRect(), the third radius, specified as a DOMPoint, applies to the bottom-right corner.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.roundrect.3.radii.3.dompointinit.html b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.roundrect.3.radii.3.dompointinit.html
new file mode 100644
index 0000000000..132420e343
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.roundrect.3.radii.3.dompointinit.html
@@ -0,0 +1,41 @@
+
+
+Canvas test: 2d.path.roundrect.3.radii.3.dompointinit
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            2d.path.roundrect.3.radii.3.dompointinit
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Verify that when three radii are given to roundRect(), the third radius, specified as a DOMPointInit, applies to the bottom-right corner.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.roundrect.3.radii.3.double.html b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.roundrect.3.radii.3.double.html
new file mode 100644
index 0000000000..75a8e924ff
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.roundrect.3.radii.3.double.html
@@ -0,0 +1,34 @@
+
+
+Canvas test: 2d.path.roundrect.3.radii.3.double
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.path.roundrect.3.radii.3.double
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Verify that when three radii are given to roundRect(), the third radius, specified as a double, applies to the bottom-right corner.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.roundrect.4.radii.1.dompoint.html b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.roundrect.4.radii.1.dompoint.html
new file mode 100644
index 0000000000..b681b59f4e
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.roundrect.4.radii.1.dompoint.html
@@ -0,0 +1,41 @@
+
+
+Canvas test: 2d.path.roundrect.4.radii.1.dompoint
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                2d.path.roundrect.4.radii.1.dompoint
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                Verify that when four radii are given to roundRect(), the first radius, specified as a DOMPoint, applies to the top-left corner.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.roundrect.4.radii.1.dompointinit.html b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.roundrect.4.radii.1.dompointinit.html
new file mode 100644
index 0000000000..e5542894b3
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.roundrect.4.radii.1.dompointinit.html
@@ -0,0 +1,41 @@
+
+
+Canvas test: 2d.path.roundrect.4.radii.1.dompointinit
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  2d.path.roundrect.4.radii.1.dompointinit
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Verify that when four radii are given to roundRect(), the first radius, specified as a DOMPointInit, applies to the top-left corner.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.roundrect.4.radii.1.double.html b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.roundrect.4.radii.1.double.html
new file mode 100644
index 0000000000..028effa82b
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.roundrect.4.radii.1.double.html
@@ -0,0 +1,34 @@
+
+
+Canvas test: 2d.path.roundrect.4.radii.1.double
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    2d.path.roundrect.4.radii.1.double
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    Verify that when four radii are given to roundRect(), the first radius, specified as a double, applies to the top-left corner.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.roundrect.4.radii.2.dompoint.html b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.roundrect.4.radii.2.dompoint.html
new file mode 100644
index 0000000000..d3c16eb493
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.roundrect.4.radii.2.dompoint.html
@@ -0,0 +1,41 @@
+
+
+Canvas test: 2d.path.roundrect.4.radii.2.dompoint
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      2d.path.roundrect.4.radii.2.dompoint
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      Verify that when four radii are given to roundRect(), the second radius, specified as a DOMPoint, applies to the top-right corner.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.roundrect.4.radii.2.dompointinit.html b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.roundrect.4.radii.2.dompointinit.html
new file mode 100644
index 0000000000..ab5ad3f4da
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.roundrect.4.radii.2.dompointinit.html
@@ -0,0 +1,41 @@
+
+
+Canvas test: 2d.path.roundrect.4.radii.2.dompointinit
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        2d.path.roundrect.4.radii.2.dompointinit
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        Verify that when four radii are given to roundRect(), the second radius, specified as a DOMPointInit, applies to the top-right corner.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.roundrect.4.radii.2.double.html b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.roundrect.4.radii.2.double.html
new file mode 100644
index 0000000000..ec229e396a
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.roundrect.4.radii.2.double.html
@@ -0,0 +1,34 @@
+
+
+Canvas test: 2d.path.roundrect.4.radii.2.double
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          2d.path.roundrect.4.radii.2.double
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          Verify that when four radii are given to roundRect(), the second radius, specified as a double, applies to the top-right corner.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.roundrect.4.radii.3.dompoint.html b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.roundrect.4.radii.3.dompoint.html
new file mode 100644
index 0000000000..5367543fa3
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.roundrect.4.radii.3.dompoint.html
@@ -0,0 +1,41 @@
+
+
+Canvas test: 2d.path.roundrect.4.radii.3.dompoint
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            2d.path.roundrect.4.radii.3.dompoint
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Verify that when four radii are given to roundRect(), the third radius, specified as a DOMPoint, applies to the bottom-right corner.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.roundrect.4.radii.3.dompointinit.html b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.roundrect.4.radii.3.dompointinit.html
new file mode 100644
index 0000000000..89df524d53
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.roundrect.4.radii.3.dompointinit.html
@@ -0,0 +1,41 @@
+
+
+Canvas test: 2d.path.roundrect.4.radii.3.dompointinit
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.path.roundrect.4.radii.3.dompointinit
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Verify that when four radii are given to roundRect(), the third radius, specified as a DOMPointInit, applies to the bottom-right corner.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.roundrect.4.radii.3.double.html b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.roundrect.4.radii.3.double.html
new file mode 100644
index 0000000000..22ba747b37
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.roundrect.4.radii.3.double.html
@@ -0,0 +1,34 @@
+
+
+Canvas test: 2d.path.roundrect.4.radii.3.double
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                2d.path.roundrect.4.radii.3.double
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                Verify that when four radii are given to roundRect(), the third radius, specified as a double, applies to the bottom-right corner.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.roundrect.4.radii.4.dompoint.html b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.roundrect.4.radii.4.dompoint.html
new file mode 100644
index 0000000000..b15c291884
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.roundrect.4.radii.4.dompoint.html
@@ -0,0 +1,41 @@
+
+
+Canvas test: 2d.path.roundrect.4.radii.4.dompoint
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  2d.path.roundrect.4.radii.4.dompoint
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Verify that when four radii are given to roundRect(), the fourth radius, specified as a DOMPoint, applies to the bottom-left corner.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.roundrect.4.radii.4.dompointinit.html b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.roundrect.4.radii.4.dompointinit.html
new file mode 100644
index 0000000000..d9b03a1225
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.roundrect.4.radii.4.dompointinit.html
@@ -0,0 +1,41 @@
+
+
+Canvas test: 2d.path.roundrect.4.radii.4.dompointinit
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    2d.path.roundrect.4.radii.4.dompointinit
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    Verify that when four radii are given to roundRect(), the fourth radius, specified as a DOMPointInit, applies to the bottom-left corner.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.roundrect.4.radii.4.double.html b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.roundrect.4.radii.4.double.html
new file mode 100644
index 0000000000..62ccf85958
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.roundrect.4.radii.4.double.html
@@ -0,0 +1,34 @@
+
+
+Canvas test: 2d.path.roundrect.4.radii.4.double
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      2d.path.roundrect.4.radii.4.double
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      Verify that when four radii are given to roundRect(), the fourth radius, specified as a double, applies to the bottom-left corner.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.roundrect.badinput.html b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.roundrect.badinput.html
new file mode 100644
index 0000000000..39e1d0c655
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.roundrect.badinput.html
@@ -0,0 +1,33 @@
+
+
+Canvas test: 2d.path.roundrect.badinput
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        2d.path.roundrect.badinput
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        roundRect() throws or does not throw errors given the strange inputs.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.roundrect.closed.html b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.roundrect.closed.html
new file mode 100644
index 0000000000..89aeb3b865
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.roundrect.closed.html
@@ -0,0 +1,33 @@
+
+
+Canvas test: 2d.path.roundrect.closed
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          2d.path.roundrect.closed
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.roundrect.end.1.html b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.roundrect.end.1.html
new file mode 100644
index 0000000000..be98ce5841
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.roundrect.end.1.html
@@ -0,0 +1,33 @@
+
+
+Canvas test: 2d.path.roundrect.end.1
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            2d.path.roundrect.end.1
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.roundrect.end.2.html b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.roundrect.end.2.html
new file mode 100644
index 0000000000..16131ad345
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.roundrect.end.2.html
@@ -0,0 +1,38 @@
+
+
+Canvas test: 2d.path.roundrect.end.2
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.path.roundrect.end.2
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.roundrect.end.3.html b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.roundrect.end.3.html
new file mode 100644
index 0000000000..f9454080eb
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.roundrect.end.3.html
@@ -0,0 +1,36 @@
+
+
+Canvas test: 2d.path.roundrect.end.3
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                2d.path.roundrect.end.3
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.roundrect.end.4.html b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.roundrect.end.4.html
new file mode 100644
index 0000000000..52d49c32e7
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.roundrect.end.4.html
@@ -0,0 +1,36 @@
+
+
+Canvas test: 2d.path.roundrect.end.4
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  2d.path.roundrect.end.4
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.roundrect.negative.html b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.roundrect.negative.html
new file mode 100644
index 0000000000..66e1172432
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.roundrect.negative.html
@@ -0,0 +1,44 @@
+
+
+Canvas test: 2d.path.roundrect.negative
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    2d.path.roundrect.negative
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.roundrect.newsubpath.html b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.roundrect.newsubpath.html
new file mode 100644
index 0000000000..df3990a376
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.roundrect.newsubpath.html
@@ -0,0 +1,35 @@
+
+
+Canvas test: 2d.path.roundrect.newsubpath
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      2d.path.roundrect.newsubpath
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.roundrect.nonfinite.html b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.roundrect.nonfinite.html
new file mode 100644
index 0000000000..5f0f0b6eaf
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.roundrect.nonfinite.html
@@ -0,0 +1,115 @@
+
+
+Canvas test: 2d.path.roundrect.nonfinite
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        2d.path.roundrect.nonfinite
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        roundRect() with Infinity/NaN is ignored
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.roundrect.radius.intersecting.1.html b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.roundrect.radius.intersecting.1.html
new file mode 100644
index 0000000000..913b17e45e
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.roundrect.radius.intersecting.1.html
@@ -0,0 +1,39 @@
+
+
+Canvas test: 2d.path.roundrect.radius.intersecting.1
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          2d.path.roundrect.radius.intersecting.1
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          Check that roundRects with intersecting corner arcs are rendered correctly.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.roundrect.radius.intersecting.2.html b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.roundrect.radius.intersecting.2.html
new file mode 100644
index 0000000000..abd7f86088
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.roundrect.radius.intersecting.2.html
@@ -0,0 +1,39 @@
+
+
+Canvas test: 2d.path.roundrect.radius.intersecting.2
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            2d.path.roundrect.radius.intersecting.2
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Check that roundRects with intersecting corner arcs are rendered correctly.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.roundrect.radius.negative.html b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.roundrect.radius.negative.html
new file mode 100644
index 0000000000..ac2532dcfe
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.roundrect.radius.negative.html
@@ -0,0 +1,31 @@
+
+
+Canvas test: 2d.path.roundrect.radius.negative
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.path.roundrect.radius.negative
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              roundRect() with negative radius throws an exception
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.roundrect.radius.noargument.html b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.roundrect.radius.noargument.html
new file mode 100644
index 0000000000..cfaf87ecf2
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.roundrect.radius.noargument.html
@@ -0,0 +1,49 @@
+
+
+Canvas test: 2d.path.roundrect.radius.noargument
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                2d.path.roundrect.radius.noargument
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                Check that roundRect draws a rectangle when no radii are provided.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.roundrect.radius.noarugment.html b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.roundrect.radius.noarugment.html
new file mode 100644
index 0000000000..08f576b379
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.roundrect.radius.noarugment.html
@@ -0,0 +1,49 @@
+
+
+Canvas test: 2d.path.roundrect.radius.noarugment
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  2d.path.roundrect.radius.noarugment
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Check that roundRect draws a rectangle when no radii are provided.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
diff --git a/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.roundrect.radius.none.html b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.roundrect.radius.none.html
new file mode 100644
index 0000000000..8363285ffc
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.roundrect.radius.none.html
@@ -0,0 +1,26 @@
+
+
+Canvas test: 2d.path.roundrect.radius.none
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    2d.path.roundrect.radius.none
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    Check that roundRect throws an RangeError if radii is an empty array.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.roundrect.radius.toomany.html b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.roundrect.radius.toomany.html
new file mode 100644
index 0000000000..d8fe4bb45c
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.roundrect.radius.toomany.html
@@ -0,0 +1,26 @@
+
+
+Canvas test: 2d.path.roundrect.radius.toomany
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      2d.path.roundrect.radius.toomany
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      Check that roundRect throws an IndeSizeError if radii has more than four items.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.roundrect.selfintersect.html b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.roundrect.selfintersect.html
new file mode 100644
index 0000000000..7a69aaf4c6
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.roundrect.selfintersect.html
@@ -0,0 +1,33 @@
+
+
+Canvas test: 2d.path.roundrect.selfintersect
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        2d.path.roundrect.selfintersect
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.roundrect.winding.html b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.roundrect.winding.html
new file mode 100644
index 0000000000..9c1f985eb9
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.roundrect.winding.html
@@ -0,0 +1,38 @@
+
+
+Canvas test: 2d.path.roundrect.winding
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          2d.path.roundrect.winding
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.roundrect.zero.1.html b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.roundrect.zero.1.html
new file mode 100644
index 0000000000..4e9a804dc2
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.roundrect.zero.1.html
@@ -0,0 +1,33 @@
+
+
+Canvas test: 2d.path.roundrect.zero.1
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            2d.path.roundrect.zero.1
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.roundrect.zero.2.html b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.roundrect.zero.2.html
new file mode 100644
index 0000000000..ac64fa7818
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.roundrect.zero.2.html
@@ -0,0 +1,33 @@
+
+
+Canvas test: 2d.path.roundrect.zero.2
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.path.roundrect.zero.2
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.roundrect.zero.3.html b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.roundrect.zero.3.html
new file mode 100644
index 0000000000..a807715b35
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.roundrect.zero.3.html
@@ -0,0 +1,33 @@
+
+
+Canvas test: 2d.path.roundrect.zero.3
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                2d.path.roundrect.zero.3
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.roundrect.zero.4.html b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.roundrect.zero.4.html
new file mode 100644
index 0000000000..fc51918c27
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.roundrect.zero.4.html
@@ -0,0 +1,33 @@
+
+
+Canvas test: 2d.path.roundrect.zero.4
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  2d.path.roundrect.zero.4
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.roundrect.zero.5.html b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.roundrect.zero.5.html
new file mode 100644
index 0000000000..de7d41b68f
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.roundrect.zero.5.html
@@ -0,0 +1,33 @@
+
+
+Canvas test: 2d.path.roundrect.zero.5
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    2d.path.roundrect.zero.5
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.roundrect.zero.6.html b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.roundrect.zero.6.html
new file mode 100644
index 0000000000..1e8e338a73
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.roundrect.zero.6.html
@@ -0,0 +1,35 @@
+
+
+Canvas test: 2d.path.roundrect.zero.6
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      2d.path.roundrect.zero.6
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.stroke.empty.html b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.stroke.empty.html
new file mode 100644
index 0000000000..aa459ec986
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.stroke.empty.html
@@ -0,0 +1,39 @@
+
+
+Canvas test: 2d.path.stroke.empty
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        2d.path.stroke.empty
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        Empty subpaths are not stroked
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.stroke.overlap.html b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.stroke.overlap.html
new file mode 100644
index 0000000000..a577f22769
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.stroke.overlap.html
@@ -0,0 +1,37 @@
+
+
+Canvas test: 2d.path.stroke.overlap
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          2d.path.stroke.overlap
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          Stroked subpaths are combined before being drawn
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.stroke.overlap.png b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.stroke.overlap.png
new file mode 100644
index 0000000000..e2a35d48d4
Binary files /dev/null and b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.stroke.overlap.png differ
diff --git a/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.stroke.prune.arc.html b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.stroke.prune.arc.html
new file mode 100644
index 0000000000..6474a15424
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.stroke.prune.arc.html
@@ -0,0 +1,44 @@
+
+
+Canvas test: 2d.path.stroke.prune.arc
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            2d.path.stroke.prune.arc
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Zero-length line segments from arcTo and arc are removed before stroking
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.stroke.prune.closed.html b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.stroke.prune.closed.html
new file mode 100644
index 0000000000..16b46852a1
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.stroke.prune.closed.html
@@ -0,0 +1,40 @@
+
+
+Canvas test: 2d.path.stroke.prune.closed
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.path.stroke.prune.closed
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Zero-length line segments from closed paths are removed before stroking
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.stroke.prune.corner.html b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.stroke.prune.corner.html
new file mode 100644
index 0000000000..226fccc6d4
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.stroke.prune.corner.html
@@ -0,0 +1,42 @@
+
+
+Canvas test: 2d.path.stroke.prune.corner
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                2d.path.stroke.prune.corner
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                Zero-length line segments are removed before stroking with miters
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.stroke.prune.curve.html b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.stroke.prune.curve.html
new file mode 100644
index 0000000000..8023b7b3f9
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.stroke.prune.curve.html
@@ -0,0 +1,44 @@
+
+
+Canvas test: 2d.path.stroke.prune.curve
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  2d.path.stroke.prune.curve
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Zero-length line segments from quadraticCurveTo and bezierCurveTo are removed before stroking
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.stroke.prune.line.html b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.stroke.prune.line.html
new file mode 100644
index 0000000000..97f88847c0
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.stroke.prune.line.html
@@ -0,0 +1,39 @@
+
+
+Canvas test: 2d.path.stroke.prune.line
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    2d.path.stroke.prune.line
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    Zero-length line segments from lineTo are removed before stroking
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.stroke.prune.rect.html b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.stroke.prune.rect.html
new file mode 100644
index 0000000000..bf1fc9aa20
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.stroke.prune.rect.html
@@ -0,0 +1,40 @@
+
+
+Canvas test: 2d.path.stroke.prune.rect
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      2d.path.stroke.prune.rect
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      Zero-length line segments from rect and strokeRect are removed before stroking
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.stroke.scale1.html b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.stroke.scale1.html
new file mode 100644
index 0000000000..3e4651ec4a
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.stroke.scale1.html
@@ -0,0 +1,53 @@
+
+
+Canvas test: 2d.path.stroke.scale1
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        2d.path.stroke.scale1
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        Stroke line widths are scaled by the current transformation matrix
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.stroke.scale2.html b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.stroke.scale2.html
new file mode 100644
index 0000000000..099efec76c
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.stroke.scale2.html
@@ -0,0 +1,55 @@
+
+
+Canvas test: 2d.path.stroke.scale2
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          2d.path.stroke.scale2
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          Stroke line widths are scaled by the current transformation matrix
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.stroke.skew.html b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.stroke.skew.html
new file mode 100644
index 0000000000..86f3eebf1d
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.stroke.skew.html
@@ -0,0 +1,69 @@
+
+
+Canvas test: 2d.path.stroke.skew
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            2d.path.stroke.skew
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Strokes lines are skewed by the current transformation matrix
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.stroke.unaffected.html b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.stroke.unaffected.html
new file mode 100644
index 0000000000..8e6b41946f
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.stroke.unaffected.html
@@ -0,0 +1,41 @@
+
+
+Canvas test: 2d.path.stroke.unaffected
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.path.stroke.unaffected
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Stroking does not start a new path or subpath
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.stroke.union.html b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.stroke.union.html
new file mode 100644
index 0000000000..73198ab24d
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.stroke.union.html
@@ -0,0 +1,37 @@
+
+
+Canvas test: 2d.path.stroke.union
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                2d.path.stroke.union
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                Strokes in opposite directions are unioned, not subtracted
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.transformation.basic.html b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.transformation.basic.html
new file mode 100644
index 0000000000..1cdc81e4f6
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.transformation.basic.html
@@ -0,0 +1,35 @@
+
+
+Canvas test: 2d.path.transformation.basic
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  2d.path.transformation.basic
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.transformation.changing.html b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.transformation.changing.html
new file mode 100644
index 0000000000..8f711b6b9a
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.transformation.changing.html
@@ -0,0 +1,41 @@
+
+
+Canvas test: 2d.path.transformation.changing
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    2d.path.transformation.changing
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    Transformations are applied while building paths, not when drawing
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.transformation.multiple.html b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.transformation.multiple.html
new file mode 100644
index 0000000000..af06c06371
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/path-objects/2d.path.transformation.multiple.html
@@ -0,0 +1,46 @@
+
+
+Canvas test: 2d.path.transformation.multiple
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      2d.path.transformation.multiple
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      Transformations are applied while building paths, not when drawing
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/pixel-manipulation/2d.imageData.create.and.resize.html b/testing/web-platform/tests/html/canvas/element/pixel-manipulation/2d.imageData.create.and.resize.html
new file mode 100644
index 0000000000..1ecd3fbd65
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/pixel-manipulation/2d.imageData.create.and.resize.html
@@ -0,0 +1,34 @@
+
+
+Canvas test: 2d.imageData.create.and.resize
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        2d.imageData.create.and.resize
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        Verify no crash when resizing an image bitmap to zero.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/pixel-manipulation/2d.imageData.create1.basic.html b/testing/web-platform/tests/html/canvas/element/pixel-manipulation/2d.imageData.create1.basic.html
new file mode 100644
index 0000000000..1ea73690e8
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/pixel-manipulation/2d.imageData.create1.basic.html
@@ -0,0 +1,26 @@
+
+
+Canvas test: 2d.imageData.create1.basic
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          2d.imageData.create1.basic
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          createImageData(imgdata) exists and returns something
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/pixel-manipulation/2d.imageData.create1.initial.html b/testing/web-platform/tests/html/canvas/element/pixel-manipulation/2d.imageData.create1.initial.html
new file mode 100644
index 0000000000..8709623a0c
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/pixel-manipulation/2d.imageData.create1.initial.html
@@ -0,0 +1,37 @@
+
+
+Canvas test: 2d.imageData.create1.initial
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            2d.imageData.create1.initial
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            createImageData(imgdata) returns transparent black data of the right size
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/pixel-manipulation/2d.imageData.create1.this.html b/testing/web-platform/tests/html/canvas/element/pixel-manipulation/2d.imageData.create1.this.html
new file mode 100644
index 0000000000..dd4b80ec08
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/pixel-manipulation/2d.imageData.create1.this.html
@@ -0,0 +1,29 @@
+
+
+Canvas test: 2d.imageData.create1.this
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.imageData.create1.this
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              createImageData(imgdata) should throw when called with the wrong |this|
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Defined in "Web IDL" (draft)
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/pixel-manipulation/2d.imageData.create1.type.html b/testing/web-platform/tests/html/canvas/element/pixel-manipulation/2d.imageData.create1.type.html
new file mode 100644
index 0000000000..36f3db99be
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/pixel-manipulation/2d.imageData.create1.type.html
@@ -0,0 +1,32 @@
+
+
+Canvas test: 2d.imageData.create1.type
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                2d.imageData.create1.type
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                createImageData(imgdata) returns an ImageData object containing a Uint8ClampedArray object
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/pixel-manipulation/2d.imageData.create1.zero.html b/testing/web-platform/tests/html/canvas/element/pixel-manipulation/2d.imageData.create1.zero.html
new file mode 100644
index 0000000000..02619376a1
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/pixel-manipulation/2d.imageData.create1.zero.html
@@ -0,0 +1,26 @@
+
+
+Canvas test: 2d.imageData.create1.zero
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  2d.imageData.create1.zero
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  createImageData(null) throws TypeError
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/pixel-manipulation/2d.imageData.create2.basic.html b/testing/web-platform/tests/html/canvas/element/pixel-manipulation/2d.imageData.create2.basic.html
new file mode 100644
index 0000000000..807b6dbfa2
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/pixel-manipulation/2d.imageData.create2.basic.html
@@ -0,0 +1,26 @@
+
+
+Canvas test: 2d.imageData.create2.basic
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    2d.imageData.create2.basic
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    createImageData(sw, sh) exists and returns something
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/pixel-manipulation/2d.imageData.create2.double.html b/testing/web-platform/tests/html/canvas/element/pixel-manipulation/2d.imageData.create2.double.html
new file mode 100644
index 0000000000..31aa42d5a8
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/pixel-manipulation/2d.imageData.create2.double.html
@@ -0,0 +1,31 @@
+
+
+Canvas test: 2d.imageData.create2.double
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      2d.imageData.create2.double
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      createImageData(w, h) double is converted to long
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/pixel-manipulation/2d.imageData.create2.initial.html b/testing/web-platform/tests/html/canvas/element/pixel-manipulation/2d.imageData.create2.initial.html
new file mode 100644
index 0000000000..c2a69b4c06
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/pixel-manipulation/2d.imageData.create2.initial.html
@@ -0,0 +1,34 @@
+
+
+Canvas test: 2d.imageData.create2.initial
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        2d.imageData.create2.initial
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        createImageData(sw, sh) returns transparent black data of the right size
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/pixel-manipulation/2d.imageData.create2.large.html b/testing/web-platform/tests/html/canvas/element/pixel-manipulation/2d.imageData.create2.large.html
new file mode 100644
index 0000000000..73b2a1c19f
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/pixel-manipulation/2d.imageData.create2.large.html
@@ -0,0 +1,34 @@
+
+
+Canvas test: 2d.imageData.create2.large
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          2d.imageData.create2.large
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          createImageData(sw, sh) works for sizes much larger than the canvas
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/pixel-manipulation/2d.imageData.create2.negative.html b/testing/web-platform/tests/html/canvas/element/pixel-manipulation/2d.imageData.create2.negative.html
new file mode 100644
index 0000000000..7c4a3944eb
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/pixel-manipulation/2d.imageData.create2.negative.html
@@ -0,0 +1,32 @@
+
+
+Canvas test: 2d.imageData.create2.negative
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            2d.imageData.create2.negative
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            createImageData(sw, sh) takes the absolute magnitude of the size arguments
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/pixel-manipulation/2d.imageData.create2.nonfinite.html b/testing/web-platform/tests/html/canvas/element/pixel-manipulation/2d.imageData.create2.nonfinite.html
new file mode 100644
index 0000000000..af30dc9124
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/pixel-manipulation/2d.imageData.create2.nonfinite.html
@@ -0,0 +1,42 @@
+
+
+Canvas test: 2d.imageData.create2.nonfinite
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.imageData.create2.nonfinite
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              createImageData() throws TypeError if arguments are not finite
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Defined in "Web IDL" (draft)
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/pixel-manipulation/2d.imageData.create2.round.html b/testing/web-platform/tests/html/canvas/element/pixel-manipulation/2d.imageData.create2.round.html
new file mode 100644
index 0000000000..c62243f418
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/pixel-manipulation/2d.imageData.create2.round.html
@@ -0,0 +1,29 @@
+
+
+Canvas test: 2d.imageData.create2.round
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                2d.imageData.create2.round
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                createImageData(w, h) is rounded the same as getImageData(0, 0, w, h)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/pixel-manipulation/2d.imageData.create2.this.html b/testing/web-platform/tests/html/canvas/element/pixel-manipulation/2d.imageData.create2.this.html
new file mode 100644
index 0000000000..f5373d0edd
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/pixel-manipulation/2d.imageData.create2.this.html
@@ -0,0 +1,28 @@
+
+
+Canvas test: 2d.imageData.create2.this
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  2d.imageData.create2.this
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  createImageData(sw, sh) should throw when called with the wrong |this|
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Defined in "Web IDL" (draft)
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/pixel-manipulation/2d.imageData.create2.type.html b/testing/web-platform/tests/html/canvas/element/pixel-manipulation/2d.imageData.create2.type.html
new file mode 100644
index 0000000000..d595d33845
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/pixel-manipulation/2d.imageData.create2.type.html
@@ -0,0 +1,32 @@
+
+
+Canvas test: 2d.imageData.create2.type
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    2d.imageData.create2.type
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    createImageData(sw, sh) returns an ImageData object containing a Uint8ClampedArray object
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/pixel-manipulation/2d.imageData.create2.zero.html b/testing/web-platform/tests/html/canvas/element/pixel-manipulation/2d.imageData.create2.zero.html
new file mode 100644
index 0000000000..cc949162d3
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/pixel-manipulation/2d.imageData.create2.zero.html
@@ -0,0 +1,30 @@
+
+
+Canvas test: 2d.imageData.create2.zero
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      2d.imageData.create2.zero
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      createImageData(sw, sh) throws INDEX_SIZE_ERR if size is zero
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/pixel-manipulation/2d.imageData.get.basic.html b/testing/web-platform/tests/html/canvas/element/pixel-manipulation/2d.imageData.get.basic.html
new file mode 100644
index 0000000000..5f8f199540
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/pixel-manipulation/2d.imageData.get.basic.html
@@ -0,0 +1,26 @@
+
+
+Canvas test: 2d.imageData.get.basic
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        2d.imageData.get.basic
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        getImageData() exists and returns something
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/pixel-manipulation/2d.imageData.get.clamp.html b/testing/web-platform/tests/html/canvas/element/pixel-manipulation/2d.imageData.get.clamp.html
new file mode 100644
index 0000000000..0047e910b7
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/pixel-manipulation/2d.imageData.get.clamp.html
@@ -0,0 +1,37 @@
+
+
+Canvas test: 2d.imageData.get.clamp
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          2d.imageData.get.clamp
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          getImageData() clamps colors to the range [0, 255]
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/pixel-manipulation/2d.imageData.get.double.html b/testing/web-platform/tests/html/canvas/element/pixel-manipulation/2d.imageData.get.double.html
new file mode 100644
index 0000000000..5cea5fcbc2
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/pixel-manipulation/2d.imageData.get.double.html
@@ -0,0 +1,31 @@
+
+
+Canvas test: 2d.imageData.get.double
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            2d.imageData.get.double
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            createImageData(w, h) double is converted to long
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/pixel-manipulation/2d.imageData.get.invalid.html b/testing/web-platform/tests/html/canvas/element/pixel-manipulation/2d.imageData.get.invalid.html
new file mode 100644
index 0000000000..689e72f69b
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/pixel-manipulation/2d.imageData.get.invalid.html
@@ -0,0 +1,44 @@
+
+
+Canvas test: 2d.imageData.get.invalid
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.imageData.get.invalid
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Verify getImageData() behavior in invalid cases.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/pixel-manipulation/2d.imageData.get.large.crash.html b/testing/web-platform/tests/html/canvas/element/pixel-manipulation/2d.imageData.get.large.crash.html
new file mode 100644
index 0000000000..f41eec7b9b
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/pixel-manipulation/2d.imageData.get.large.crash.html
@@ -0,0 +1,26 @@
+
+
+Canvas test: 2d.imageData.get.large.crash
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                2d.imageData.get.large.crash
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                Test that canvas crash when image data cannot be allocated.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/pixel-manipulation/2d.imageData.get.length.html b/testing/web-platform/tests/html/canvas/element/pixel-manipulation/2d.imageData.get.length.html
new file mode 100644
index 0000000000..41b9832025
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/pixel-manipulation/2d.imageData.get.length.html
@@ -0,0 +1,27 @@
+
+
+Canvas test: 2d.imageData.get.length
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  2d.imageData.get.length
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  getImageData() returns a correctly-sized Uint8ClampedArray
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/pixel-manipulation/2d.imageData.get.nonfinite.html b/testing/web-platform/tests/html/canvas/element/pixel-manipulation/2d.imageData.get.nonfinite.html
new file mode 100644
index 0000000000..a80e905cfd
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/pixel-manipulation/2d.imageData.get.nonfinite.html
@@ -0,0 +1,74 @@
+
+
+Canvas test: 2d.imageData.get.nonfinite
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    2d.imageData.get.nonfinite
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    getImageData() throws TypeError if arguments are not finite
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    Defined in "Web IDL" (draft)
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/pixel-manipulation/2d.imageData.get.nonpremul.html b/testing/web-platform/tests/html/canvas/element/pixel-manipulation/2d.imageData.get.nonpremul.html
new file mode 100644
index 0000000000..bc833c2198
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/pixel-manipulation/2d.imageData.get.nonpremul.html
@@ -0,0 +1,33 @@
+
+
+Canvas test: 2d.imageData.get.nonpremul
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      2d.imageData.get.nonpremul
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      getImageData() returns non-premultiplied colors
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/pixel-manipulation/2d.imageData.get.order.alpha.html b/testing/web-platform/tests/html/canvas/element/pixel-manipulation/2d.imageData.get.order.alpha.html
new file mode 100644
index 0000000000..e5b57f650e
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/pixel-manipulation/2d.imageData.get.order.alpha.html
@@ -0,0 +1,30 @@
+
+
+Canvas test: 2d.imageData.get.order.alpha
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        2d.imageData.get.order.alpha
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        getImageData() returns A in the fourth component
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/pixel-manipulation/2d.imageData.get.order.cols.html b/testing/web-platform/tests/html/canvas/element/pixel-manipulation/2d.imageData.get.order.cols.html
new file mode 100644
index 0000000000..66fd984ebd
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/pixel-manipulation/2d.imageData.get.order.cols.html
@@ -0,0 +1,33 @@
+
+
+Canvas test: 2d.imageData.get.order.cols
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          2d.imageData.get.order.cols
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          getImageData() returns leftmost columns first
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/pixel-manipulation/2d.imageData.get.order.rgb.html b/testing/web-platform/tests/html/canvas/element/pixel-manipulation/2d.imageData.get.order.rgb.html
new file mode 100644
index 0000000000..4d15ce7927
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/pixel-manipulation/2d.imageData.get.order.rgb.html
@@ -0,0 +1,36 @@
+
+
+Canvas test: 2d.imageData.get.order.rgb
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            2d.imageData.get.order.rgb
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            getImageData() returns R then G then B
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/pixel-manipulation/2d.imageData.get.order.rows.html b/testing/web-platform/tests/html/canvas/element/pixel-manipulation/2d.imageData.get.order.rows.html
new file mode 100644
index 0000000000..086ce322e0
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/pixel-manipulation/2d.imageData.get.order.rows.html
@@ -0,0 +1,33 @@
+
+
+Canvas test: 2d.imageData.get.order.rows
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.imageData.get.order.rows
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              getImageData() returns topmost rows first
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/pixel-manipulation/2d.imageData.get.range.html b/testing/web-platform/tests/html/canvas/element/pixel-manipulation/2d.imageData.get.range.html
new file mode 100644
index 0000000000..d921191772
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/pixel-manipulation/2d.imageData.get.range.html
@@ -0,0 +1,33 @@
+
+
+Canvas test: 2d.imageData.get.range
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                2d.imageData.get.range
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                getImageData() returns values in the range [0, 255]
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/pixel-manipulation/2d.imageData.get.rounding.html b/testing/web-platform/tests/html/canvas/element/pixel-manipulation/2d.imageData.get.rounding.html
new file mode 100644
index 0000000000..9255be087b
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/pixel-manipulation/2d.imageData.get.rounding.html
@@ -0,0 +1,44 @@
+
+
+Canvas test: 2d.imageData.get.rounding
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  2d.imageData.get.rounding
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Test the handling of non-integer source coordinates in getImageData().
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/pixel-manipulation/2d.imageData.get.source.negative.html b/testing/web-platform/tests/html/canvas/element/pixel-manipulation/2d.imageData.get.source.negative.html
new file mode 100644
index 0000000000..0b84b1caca
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/pixel-manipulation/2d.imageData.get.source.negative.html
@@ -0,0 +1,45 @@
+
+
+Canvas test: 2d.imageData.get.source.negative
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    2d.imageData.get.source.negative
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    getImageData() works with negative width and height, and returns top-to-bottom left-to-right
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/pixel-manipulation/2d.imageData.get.source.outside.html b/testing/web-platform/tests/html/canvas/element/pixel-manipulation/2d.imageData.get.source.outside.html
new file mode 100644
index 0000000000..fca97f2e6f
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/pixel-manipulation/2d.imageData.get.source.outside.html
@@ -0,0 +1,85 @@
+
+
+Canvas test: 2d.imageData.get.source.outside
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      2d.imageData.get.source.outside
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      getImageData() returns transparent black outside the canvas
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/pixel-manipulation/2d.imageData.get.source.size.html b/testing/web-platform/tests/html/canvas/element/pixel-manipulation/2d.imageData.get.source.size.html
new file mode 100644
index 0000000000..800edb8baf
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/pixel-manipulation/2d.imageData.get.source.size.html
@@ -0,0 +1,29 @@
+
+
+Canvas test: 2d.imageData.get.source.size
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        2d.imageData.get.source.size
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        getImageData() returns bigger ImageData for bigger source rectangle
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/pixel-manipulation/2d.imageData.get.type.html b/testing/web-platform/tests/html/canvas/element/pixel-manipulation/2d.imageData.get.type.html
new file mode 100644
index 0000000000..748d46b166
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/pixel-manipulation/2d.imageData.get.type.html
@@ -0,0 +1,32 @@
+
+
+Canvas test: 2d.imageData.get.type
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          2d.imageData.get.type
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          getImageData() returns an ImageData object containing a Uint8ClampedArray object
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/pixel-manipulation/2d.imageData.get.unaffected.html b/testing/web-platform/tests/html/canvas/element/pixel-manipulation/2d.imageData.get.unaffected.html
new file mode 100644
index 0000000000..f2f4a2e4fa
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/pixel-manipulation/2d.imageData.get.unaffected.html
@@ -0,0 +1,41 @@
+
+
+Canvas test: 2d.imageData.get.unaffected
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            2d.imageData.get.unaffected
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            getImageData() is not affected by context state
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/pixel-manipulation/2d.imageData.get.zero.html b/testing/web-platform/tests/html/canvas/element/pixel-manipulation/2d.imageData.get.zero.html
new file mode 100644
index 0000000000..438bc2fb1e
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/pixel-manipulation/2d.imageData.get.zero.html
@@ -0,0 +1,32 @@
+
+
+Canvas test: 2d.imageData.get.zero
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.imageData.get.zero
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              getImageData() throws INDEX_SIZE_ERR if size is zero
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/pixel-manipulation/2d.imageData.object.clamp.html b/testing/web-platform/tests/html/canvas/element/pixel-manipulation/2d.imageData.object.clamp.html
new file mode 100644
index 0000000000..df8ef1ba20
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/pixel-manipulation/2d.imageData.object.clamp.html
@@ -0,0 +1,54 @@
+
+
+Canvas test: 2d.imageData.object.clamp
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                2d.imageData.object.clamp
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                ImageData.data clamps numbers to [0, 255]
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/pixel-manipulation/2d.imageData.object.ctor.array.bounds.html b/testing/web-platform/tests/html/canvas/element/pixel-manipulation/2d.imageData.object.ctor.array.bounds.html
new file mode 100644
index 0000000000..01affeb947
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/pixel-manipulation/2d.imageData.object.ctor.array.bounds.html
@@ -0,0 +1,33 @@
+
+
+Canvas test: 2d.imageData.object.ctor.array.bounds
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  2d.imageData.object.ctor.array.bounds
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ImageData has a usable constructor
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/pixel-manipulation/2d.imageData.object.ctor.array.html b/testing/web-platform/tests/html/canvas/element/pixel-manipulation/2d.imageData.object.ctor.array.html
new file mode 100644
index 0000000000..0cdc025764
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/pixel-manipulation/2d.imageData.object.ctor.array.html
@@ -0,0 +1,32 @@
+
+
+Canvas test: 2d.imageData.object.ctor.array
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    2d.imageData.object.ctor.array
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    ImageData has a usable constructor
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/pixel-manipulation/2d.imageData.object.ctor.basics.html b/testing/web-platform/tests/html/canvas/element/pixel-manipulation/2d.imageData.object.ctor.basics.html
new file mode 100644
index 0000000000..f7811e7441
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/pixel-manipulation/2d.imageData.object.ctor.basics.html
@@ -0,0 +1,111 @@
+
+
+Canvas test: 2d.imageData.object.ctor.basics
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      2d.imageData.object.ctor.basics
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      Testing different type of ImageData constructor
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/pixel-manipulation/2d.imageData.object.ctor.size.bounds.html b/testing/web-platform/tests/html/canvas/element/pixel-manipulation/2d.imageData.object.ctor.size.bounds.html
new file mode 100644
index 0000000000..5ea899ac86
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/pixel-manipulation/2d.imageData.object.ctor.size.bounds.html
@@ -0,0 +1,30 @@
+
+
+Canvas test: 2d.imageData.object.ctor.size.bounds
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        2d.imageData.object.ctor.size.bounds
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        ImageData has a usable constructor
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/pixel-manipulation/2d.imageData.object.ctor.size.html b/testing/web-platform/tests/html/canvas/element/pixel-manipulation/2d.imageData.object.ctor.size.html
new file mode 100644
index 0000000000..a11d8e2340
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/pixel-manipulation/2d.imageData.object.ctor.size.html
@@ -0,0 +1,34 @@
+
+
+Canvas test: 2d.imageData.object.ctor.size
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          2d.imageData.object.ctor.size
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          ImageData has a usable constructor
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/pixel-manipulation/2d.imageData.object.nan.html b/testing/web-platform/tests/html/canvas/element/pixel-manipulation/2d.imageData.object.nan.html
new file mode 100644
index 0000000000..974b5898a3
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/pixel-manipulation/2d.imageData.object.nan.html
@@ -0,0 +1,32 @@
+
+
+Canvas test: 2d.imageData.object.nan
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            2d.imageData.object.nan
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            ImageData.data converts NaN to 0
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/pixel-manipulation/2d.imageData.object.properties.html b/testing/web-platform/tests/html/canvas/element/pixel-manipulation/2d.imageData.object.properties.html
new file mode 100644
index 0000000000..7eefdb2f55
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/pixel-manipulation/2d.imageData.object.properties.html
@@ -0,0 +1,29 @@
+
+
+Canvas test: 2d.imageData.object.properties
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.imageData.object.properties
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              ImageData objects have the right properties
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/pixel-manipulation/2d.imageData.object.readonly.html b/testing/web-platform/tests/html/canvas/element/pixel-manipulation/2d.imageData.object.readonly.html
new file mode 100644
index 0000000000..f002466bab
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/pixel-manipulation/2d.imageData.object.readonly.html
@@ -0,0 +1,39 @@
+
+
+Canvas test: 2d.imageData.object.readonly
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                2d.imageData.object.readonly
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                ImageData objects properties are read-only
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/pixel-manipulation/2d.imageData.object.round.html b/testing/web-platform/tests/html/canvas/element/pixel-manipulation/2d.imageData.object.round.html
new file mode 100644
index 0000000000..0f7da4fff5
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/pixel-manipulation/2d.imageData.object.round.html
@@ -0,0 +1,54 @@
+
+
+Canvas test: 2d.imageData.object.round
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  2d.imageData.object.round
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ImageData.data rounds numbers with round-to-zero
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/pixel-manipulation/2d.imageData.object.set.html b/testing/web-platform/tests/html/canvas/element/pixel-manipulation/2d.imageData.object.set.html
new file mode 100644
index 0000000000..3d03bd6769
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/pixel-manipulation/2d.imageData.object.set.html
@@ -0,0 +1,30 @@
+
+
+Canvas test: 2d.imageData.object.set
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    2d.imageData.object.set
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    ImageData.data can be modified
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/pixel-manipulation/2d.imageData.object.string.html b/testing/web-platform/tests/html/canvas/element/pixel-manipulation/2d.imageData.object.string.html
new file mode 100644
index 0000000000..eda6f2838d
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/pixel-manipulation/2d.imageData.object.string.html
@@ -0,0 +1,35 @@
+
+
+Canvas test: 2d.imageData.object.string
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      2d.imageData.object.string
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      ImageData.data converts strings to numbers with ToNumber
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/pixel-manipulation/2d.imageData.object.undefined.html b/testing/web-platform/tests/html/canvas/element/pixel-manipulation/2d.imageData.object.undefined.html
new file mode 100644
index 0000000000..96867bec4a
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/pixel-manipulation/2d.imageData.object.undefined.html
@@ -0,0 +1,29 @@
+
+
+Canvas test: 2d.imageData.object.undefined
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        2d.imageData.object.undefined
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        ImageData.data converts undefined to 0
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/pixel-manipulation/2d.imageData.put.alpha.html b/testing/web-platform/tests/html/canvas/element/pixel-manipulation/2d.imageData.put.alpha.html
new file mode 100644
index 0000000000..6ee38802f6
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/pixel-manipulation/2d.imageData.put.alpha.html
@@ -0,0 +1,32 @@
+
+
+Canvas test: 2d.imageData.put.alpha
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          2d.imageData.put.alpha
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          putImageData() puts non-solid image data correctly
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/pixel-manipulation/2d.imageData.put.alpha.png b/testing/web-platform/tests/html/canvas/element/pixel-manipulation/2d.imageData.put.alpha.png
new file mode 100644
index 0000000000..5428c65524
Binary files /dev/null and b/testing/web-platform/tests/html/canvas/element/pixel-manipulation/2d.imageData.put.alpha.png differ
diff --git a/testing/web-platform/tests/html/canvas/element/pixel-manipulation/2d.imageData.put.basic.html b/testing/web-platform/tests/html/canvas/element/pixel-manipulation/2d.imageData.put.basic.html
new file mode 100644
index 0000000000..17f7d3e8e6
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/pixel-manipulation/2d.imageData.put.basic.html
@@ -0,0 +1,32 @@
+
+
+Canvas test: 2d.imageData.put.basic
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            2d.imageData.put.basic
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            putImageData() puts image data from getImageData() onto the canvas
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/pixel-manipulation/2d.imageData.put.clip.html b/testing/web-platform/tests/html/canvas/element/pixel-manipulation/2d.imageData.put.clip.html
new file mode 100644
index 0000000000..948f617095
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/pixel-manipulation/2d.imageData.put.clip.html
@@ -0,0 +1,36 @@
+
+
+Canvas test: 2d.imageData.put.clip
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.imageData.put.clip
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              putImageData() is not affected by clipping regions
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/pixel-manipulation/2d.imageData.put.created.html b/testing/web-platform/tests/html/canvas/element/pixel-manipulation/2d.imageData.put.created.html
new file mode 100644
index 0000000000..4db45873a1
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/pixel-manipulation/2d.imageData.put.created.html
@@ -0,0 +1,36 @@
+
+
+Canvas test: 2d.imageData.put.created
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                2d.imageData.put.created
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                putImageData() puts image data from createImageData() onto the canvas
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/pixel-manipulation/2d.imageData.put.cross.html b/testing/web-platform/tests/html/canvas/element/pixel-manipulation/2d.imageData.put.cross.html
new file mode 100644
index 0000000000..10226834a3
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/pixel-manipulation/2d.imageData.put.cross.html
@@ -0,0 +1,34 @@
+
+
+Canvas test: 2d.imageData.put.cross
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  2d.imageData.put.cross
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  putImageData() accepts image data got from a different canvas
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/pixel-manipulation/2d.imageData.put.dirty.negative.html b/testing/web-platform/tests/html/canvas/element/pixel-manipulation/2d.imageData.put.dirty.negative.html
new file mode 100644
index 0000000000..efaa6f2550
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/pixel-manipulation/2d.imageData.put.dirty.negative.html
@@ -0,0 +1,43 @@
+
+
+Canvas test: 2d.imageData.put.dirty.negative
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    2d.imageData.put.dirty.negative
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    putImageData() handles negative-sized dirty rectangles correctly
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/pixel-manipulation/2d.imageData.put.dirty.outside.html b/testing/web-platform/tests/html/canvas/element/pixel-manipulation/2d.imageData.put.dirty.outside.html
new file mode 100644
index 0000000000..86a77369f0
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/pixel-manipulation/2d.imageData.put.dirty.outside.html
@@ -0,0 +1,45 @@
+
+
+Canvas test: 2d.imageData.put.dirty.outside
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      2d.imageData.put.dirty.outside
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      putImageData() handles dirty rectangles outside the canvas correctly
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/pixel-manipulation/2d.imageData.put.dirty.rect1.html b/testing/web-platform/tests/html/canvas/element/pixel-manipulation/2d.imageData.put.dirty.rect1.html
new file mode 100644
index 0000000000..786db5ac4f
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/pixel-manipulation/2d.imageData.put.dirty.rect1.html
@@ -0,0 +1,43 @@
+
+
+Canvas test: 2d.imageData.put.dirty.rect1
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        2d.imageData.put.dirty.rect1
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        putImageData() only modifies areas inside the dirty rectangle, using width and height
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/pixel-manipulation/2d.imageData.put.dirty.rect2.html b/testing/web-platform/tests/html/canvas/element/pixel-manipulation/2d.imageData.put.dirty.rect2.html
new file mode 100644
index 0000000000..f5f8a3a0d1
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/pixel-manipulation/2d.imageData.put.dirty.rect2.html
@@ -0,0 +1,43 @@
+
+
+Canvas test: 2d.imageData.put.dirty.rect2
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          2d.imageData.put.dirty.rect2
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          putImageData() only modifies areas inside the dirty rectangle, using x and y
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/pixel-manipulation/2d.imageData.put.dirty.zero.html b/testing/web-platform/tests/html/canvas/element/pixel-manipulation/2d.imageData.put.dirty.zero.html
new file mode 100644
index 0000000000..d3799104dd
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/pixel-manipulation/2d.imageData.put.dirty.zero.html
@@ -0,0 +1,32 @@
+
+
+Canvas test: 2d.imageData.put.dirty.zero
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            2d.imageData.put.dirty.zero
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            putImageData() with zero-sized dirty rectangle puts nothing
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/pixel-manipulation/2d.imageData.put.modified.html b/testing/web-platform/tests/html/canvas/element/pixel-manipulation/2d.imageData.put.modified.html
new file mode 100644
index 0000000000..70b70a866f
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/pixel-manipulation/2d.imageData.put.modified.html
@@ -0,0 +1,37 @@
+
+
+Canvas test: 2d.imageData.put.modified
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.imageData.put.modified
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              putImageData() puts modified image data correctly
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/pixel-manipulation/2d.imageData.put.nonfinite.html b/testing/web-platform/tests/html/canvas/element/pixel-manipulation/2d.imageData.put.nonfinite.html
new file mode 100644
index 0000000000..ab03f9f20f
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/pixel-manipulation/2d.imageData.put.nonfinite.html
@@ -0,0 +1,108 @@
+
+
+Canvas test: 2d.imageData.put.nonfinite
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                2d.imageData.put.nonfinite
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                putImageData() throws TypeError if arguments are not finite
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                Defined in "Web IDL" (draft)
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/pixel-manipulation/2d.imageData.put.null.html b/testing/web-platform/tests/html/canvas/element/pixel-manipulation/2d.imageData.put.null.html
new file mode 100644
index 0000000000..4ed429fe7c
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/pixel-manipulation/2d.imageData.put.null.html
@@ -0,0 +1,26 @@
+
+
+Canvas test: 2d.imageData.put.null
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  2d.imageData.put.null
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  putImageData() with null imagedata throws TypeError
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/pixel-manipulation/2d.imageData.put.path.html b/testing/web-platform/tests/html/canvas/element/pixel-manipulation/2d.imageData.put.path.html
new file mode 100644
index 0000000000..e32d7cc257
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/pixel-manipulation/2d.imageData.put.path.html
@@ -0,0 +1,33 @@
+
+
+Canvas test: 2d.imageData.put.path
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    2d.imageData.put.path
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    putImageData() does not affect the current path
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/pixel-manipulation/2d.imageData.put.unaffected.html b/testing/web-platform/tests/html/canvas/element/pixel-manipulation/2d.imageData.put.unaffected.html
new file mode 100644
index 0000000000..bad06b745f
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/pixel-manipulation/2d.imageData.put.unaffected.html
@@ -0,0 +1,38 @@
+
+
+Canvas test: 2d.imageData.put.unaffected
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      2d.imageData.put.unaffected
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      putImageData() is not affected by context state
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/pixel-manipulation/2d.imageData.put.unchanged.html b/testing/web-platform/tests/html/canvas/element/pixel-manipulation/2d.imageData.put.unchanged.html
new file mode 100644
index 0000000000..026e4347ed
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/pixel-manipulation/2d.imageData.put.unchanged.html
@@ -0,0 +1,43 @@
+
+
+Canvas test: 2d.imageData.put.unchanged
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        2d.imageData.put.unchanged
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        putImageData(getImageData(...), ...) has no effect
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/pixel-manipulation/2d.imageData.put.wrongtype.html b/testing/web-platform/tests/html/canvas/element/pixel-manipulation/2d.imageData.put.wrongtype.html
new file mode 100644
index 0000000000..9e43b1fbe9
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/pixel-manipulation/2d.imageData.put.wrongtype.html
@@ -0,0 +1,29 @@
+
+
+Canvas test: 2d.imageData.put.wrongtype
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          2d.imageData.put.wrongtype
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          putImageData() does not accept non-ImageData objects
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/reset/2d.reset.basic.html b/testing/web-platform/tests/html/canvas/element/reset/2d.reset.basic.html
new file mode 100644
index 0000000000..0753ec6da8
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/reset/2d.reset.basic.html
@@ -0,0 +1,35 @@
+
+
+Canvas test: 2d.reset.basic
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            2d.reset.basic
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            reset clears to transparent black
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/scroll/2d.scrollPathIntoView.basic.html b/testing/web-platform/tests/html/canvas/element/scroll/2d.scrollPathIntoView.basic.html
new file mode 100644
index 0000000000..e4cf8ea9ad
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/scroll/2d.scrollPathIntoView.basic.html
@@ -0,0 +1,37 @@
+
+
+Canvas test: 2d.scrollPathIntoView.basic
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.scrollPathIntoView.basic
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              scrollPathIntoView() works
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/scroll/2d.scrollPathIntoView.path.html b/testing/web-platform/tests/html/canvas/element/scroll/2d.scrollPathIntoView.path.html
new file mode 100644
index 0000000000..ee1f833aaf
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/scroll/2d.scrollPathIntoView.path.html
@@ -0,0 +1,37 @@
+
+
+Canvas test: 2d.scrollPathIntoView.path
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                2d.scrollPathIntoView.path
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                scrollPathIntoView() with path argument works
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/scroll/2d.scrollPathIntoView.verticalLR.html b/testing/web-platform/tests/html/canvas/element/scroll/2d.scrollPathIntoView.verticalLR.html
new file mode 100644
index 0000000000..9d09980b6f
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/scroll/2d.scrollPathIntoView.verticalLR.html
@@ -0,0 +1,38 @@
+
+
+Canvas test: 2d.scrollPathIntoView.verticalLR
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  2d.scrollPathIntoView.verticalLR
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  scrollPathIntoView() works in vertical-lr writing mode
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/scroll/2d.scrollPathIntoView.verticalRL.html b/testing/web-platform/tests/html/canvas/element/scroll/2d.scrollPathIntoView.verticalRL.html
new file mode 100644
index 0000000000..8193106f8e
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/scroll/2d.scrollPathIntoView.verticalRL.html
@@ -0,0 +1,40 @@
+
+
+Canvas test: 2d.scrollPathIntoView.verticalRL
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    2d.scrollPathIntoView.verticalRL
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    scrollPathIntoView() works in vertical-rl writing mode
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/shadows/2d.shadow.alpha.1.html b/testing/web-platform/tests/html/canvas/element/shadows/2d.shadow.alpha.1.html
new file mode 100644
index 0000000000..38d3bd74ee
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/shadows/2d.shadow.alpha.1.html
@@ -0,0 +1,33 @@
+
+
+Canvas test: 2d.shadow.alpha.1
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      2d.shadow.alpha.1
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      Shadow color alpha components are used
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/shadows/2d.shadow.alpha.2.html b/testing/web-platform/tests/html/canvas/element/shadows/2d.shadow.alpha.2.html
new file mode 100644
index 0000000000..ae813036b8
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/shadows/2d.shadow.alpha.2.html
@@ -0,0 +1,33 @@
+
+
+Canvas test: 2d.shadow.alpha.2
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        2d.shadow.alpha.2
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        Shadow color alpha components are used
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/shadows/2d.shadow.alpha.2.png b/testing/web-platform/tests/html/canvas/element/shadows/2d.shadow.alpha.2.png
new file mode 100644
index 0000000000..8764e89b37
Binary files /dev/null and b/testing/web-platform/tests/html/canvas/element/shadows/2d.shadow.alpha.2.png differ
diff --git a/testing/web-platform/tests/html/canvas/element/shadows/2d.shadow.alpha.3.html b/testing/web-platform/tests/html/canvas/element/shadows/2d.shadow.alpha.3.html
new file mode 100644
index 0000000000..42cabad36a
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/shadows/2d.shadow.alpha.3.html
@@ -0,0 +1,35 @@
+
+
+Canvas test: 2d.shadow.alpha.3
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          2d.shadow.alpha.3
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          Shadows are affected by globalAlpha
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/shadows/2d.shadow.alpha.3.png b/testing/web-platform/tests/html/canvas/element/shadows/2d.shadow.alpha.3.png
new file mode 100644
index 0000000000..8764e89b37
Binary files /dev/null and b/testing/web-platform/tests/html/canvas/element/shadows/2d.shadow.alpha.3.png differ
diff --git a/testing/web-platform/tests/html/canvas/element/shadows/2d.shadow.alpha.4.html b/testing/web-platform/tests/html/canvas/element/shadows/2d.shadow.alpha.4.html
new file mode 100644
index 0000000000..96af9df0fa
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/shadows/2d.shadow.alpha.4.html
@@ -0,0 +1,35 @@
+
+
+Canvas test: 2d.shadow.alpha.4
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            2d.shadow.alpha.4
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Shadows with alpha components are correctly affected by globalAlpha
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/shadows/2d.shadow.alpha.4.png b/testing/web-platform/tests/html/canvas/element/shadows/2d.shadow.alpha.4.png
new file mode 100644
index 0000000000..8764e89b37
Binary files /dev/null and b/testing/web-platform/tests/html/canvas/element/shadows/2d.shadow.alpha.4.png differ
diff --git a/testing/web-platform/tests/html/canvas/element/shadows/2d.shadow.alpha.5.html b/testing/web-platform/tests/html/canvas/element/shadows/2d.shadow.alpha.5.html
new file mode 100644
index 0000000000..2f0b6838d8
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/shadows/2d.shadow.alpha.5.html
@@ -0,0 +1,34 @@
+
+
+Canvas test: 2d.shadow.alpha.5
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.shadow.alpha.5
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Shadows of shapes with alpha components are drawn correctly
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/shadows/2d.shadow.alpha.5.png b/testing/web-platform/tests/html/canvas/element/shadows/2d.shadow.alpha.5.png
new file mode 100644
index 0000000000..8764e89b37
Binary files /dev/null and b/testing/web-platform/tests/html/canvas/element/shadows/2d.shadow.alpha.5.png differ
diff --git a/testing/web-platform/tests/html/canvas/element/shadows/2d.shadow.attributes.shadowBlur.initial.html b/testing/web-platform/tests/html/canvas/element/shadows/2d.shadow.attributes.shadowBlur.initial.html
new file mode 100644
index 0000000000..4d1d71c206
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/shadows/2d.shadow.attributes.shadowBlur.initial.html
@@ -0,0 +1,27 @@
+
+
+Canvas test: 2d.shadow.attributes.shadowBlur.initial
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                2d.shadow.attributes.shadowBlur.initial
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/shadows/2d.shadow.attributes.shadowBlur.invalid.html b/testing/web-platform/tests/html/canvas/element/shadows/2d.shadow.attributes.shadowBlur.invalid.html
new file mode 100644
index 0000000000..cbd68c92d0
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/shadows/2d.shadow.attributes.shadowBlur.invalid.html
@@ -0,0 +1,53 @@
+
+
+Canvas test: 2d.shadow.attributes.shadowBlur.invalid
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  2d.shadow.attributes.shadowBlur.invalid
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/shadows/2d.shadow.attributes.shadowBlur.valid.html b/testing/web-platform/tests/html/canvas/element/shadows/2d.shadow.attributes.shadowBlur.valid.html
new file mode 100644
index 0000000000..1e6a1a80a7
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/shadows/2d.shadow.attributes.shadowBlur.valid.html
@@ -0,0 +1,37 @@
+
+
+Canvas test: 2d.shadow.attributes.shadowBlur.valid
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    2d.shadow.attributes.shadowBlur.valid
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/shadows/2d.shadow.attributes.shadowColor.initial.html b/testing/web-platform/tests/html/canvas/element/shadows/2d.shadow.attributes.shadowColor.initial.html
new file mode 100644
index 0000000000..5e02f3d122
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/shadows/2d.shadow.attributes.shadowColor.initial.html
@@ -0,0 +1,27 @@
+
+
+Canvas test: 2d.shadow.attributes.shadowColor.initial
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      2d.shadow.attributes.shadowColor.initial
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/shadows/2d.shadow.attributes.shadowColor.invalid.html b/testing/web-platform/tests/html/canvas/element/shadows/2d.shadow.attributes.shadowColor.invalid.html
new file mode 100644
index 0000000000..68b82d842e
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/shadows/2d.shadow.attributes.shadowColor.invalid.html
@@ -0,0 +1,41 @@
+
+
+Canvas test: 2d.shadow.attributes.shadowColor.invalid
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        2d.shadow.attributes.shadowColor.invalid
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/shadows/2d.shadow.attributes.shadowColor.valid.html b/testing/web-platform/tests/html/canvas/element/shadows/2d.shadow.attributes.shadowColor.valid.html
new file mode 100644
index 0000000000..84728f0308
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/shadows/2d.shadow.attributes.shadowColor.valid.html
@@ -0,0 +1,31 @@
+
+
+Canvas test: 2d.shadow.attributes.shadowColor.valid
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          2d.shadow.attributes.shadowColor.valid
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/shadows/2d.shadow.attributes.shadowOffset.initial.html b/testing/web-platform/tests/html/canvas/element/shadows/2d.shadow.attributes.shadowOffset.initial.html
new file mode 100644
index 0000000000..f15e383a06
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/shadows/2d.shadow.attributes.shadowOffset.initial.html
@@ -0,0 +1,28 @@
+
+
+Canvas test: 2d.shadow.attributes.shadowOffset.initial
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            2d.shadow.attributes.shadowOffset.initial
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/shadows/2d.shadow.attributes.shadowOffset.invalid.html b/testing/web-platform/tests/html/canvas/element/shadows/2d.shadow.attributes.shadowOffset.invalid.html
new file mode 100644
index 0000000000..c9872cb49d
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/shadows/2d.shadow.attributes.shadowOffset.invalid.html
@@ -0,0 +1,67 @@
+
+
+Canvas test: 2d.shadow.attributes.shadowOffset.invalid
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.shadow.attributes.shadowOffset.invalid
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/shadows/2d.shadow.attributes.shadowOffset.valid.html b/testing/web-platform/tests/html/canvas/element/shadows/2d.shadow.attributes.shadowOffset.valid.html
new file mode 100644
index 0000000000..dc89870e77
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/shadows/2d.shadow.attributes.shadowOffset.valid.html
@@ -0,0 +1,50 @@
+
+
+Canvas test: 2d.shadow.attributes.shadowOffset.valid
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                2d.shadow.attributes.shadowOffset.valid
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/shadows/2d.shadow.blur.high-manual.html b/testing/web-platform/tests/html/canvas/element/shadows/2d.shadow.blur.high-manual.html
new file mode 100644
index 0000000000..f5acaa97be
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/shadows/2d.shadow.blur.high-manual.html
@@ -0,0 +1,32 @@
+
+
+Canvas test: 2d.shadow.blur.high
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  2d.shadow.blur.high
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Shadows look correct for large blurs
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/shadows/2d.shadow.blur.high.png b/testing/web-platform/tests/html/canvas/element/shadows/2d.shadow.blur.high.png
new file mode 100644
index 0000000000..743640b79f
Binary files /dev/null and b/testing/web-platform/tests/html/canvas/element/shadows/2d.shadow.blur.high.png differ
diff --git a/testing/web-platform/tests/html/canvas/element/shadows/2d.shadow.blur.low-manual.html b/testing/web-platform/tests/html/canvas/element/shadows/2d.shadow.blur.low-manual.html
new file mode 100644
index 0000000000..ba594cea60
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/shadows/2d.shadow.blur.low-manual.html
@@ -0,0 +1,39 @@
+
+
+Canvas test: 2d.shadow.blur.low
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    2d.shadow.blur.low
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    Shadows look correct for small blurs
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/shadows/2d.shadow.blur.low.png b/testing/web-platform/tests/html/canvas/element/shadows/2d.shadow.blur.low.png
new file mode 100644
index 0000000000..99fb651c21
Binary files /dev/null and b/testing/web-platform/tests/html/canvas/element/shadows/2d.shadow.blur.low.png differ
diff --git a/testing/web-platform/tests/html/canvas/element/shadows/2d.shadow.canvas.alpha.html b/testing/web-platform/tests/html/canvas/element/shadows/2d.shadow.canvas.alpha.html
new file mode 100644
index 0000000000..5ad64e16fd
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/shadows/2d.shadow.canvas.alpha.html
@@ -0,0 +1,41 @@
+
+
+Canvas test: 2d.shadow.canvas.alpha
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      2d.shadow.canvas.alpha
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      Shadows are drawn correctly for partially-transparent canvases
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/shadows/2d.shadow.canvas.alpha.png b/testing/web-platform/tests/html/canvas/element/shadows/2d.shadow.canvas.alpha.png
new file mode 100644
index 0000000000..8764e89b37
Binary files /dev/null and b/testing/web-platform/tests/html/canvas/element/shadows/2d.shadow.canvas.alpha.png differ
diff --git a/testing/web-platform/tests/html/canvas/element/shadows/2d.shadow.canvas.basic.html b/testing/web-platform/tests/html/canvas/element/shadows/2d.shadow.canvas.basic.html
new file mode 100644
index 0000000000..fd70884d02
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/shadows/2d.shadow.canvas.basic.html
@@ -0,0 +1,40 @@
+
+
+Canvas test: 2d.shadow.canvas.basic
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        2d.shadow.canvas.basic
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        Shadows are drawn for canvases
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/shadows/2d.shadow.canvas.transparent.1.html b/testing/web-platform/tests/html/canvas/element/shadows/2d.shadow.canvas.transparent.1.html
new file mode 100644
index 0000000000..f18b7d7189
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/shadows/2d.shadow.canvas.transparent.1.html
@@ -0,0 +1,38 @@
+
+
+Canvas test: 2d.shadow.canvas.transparent.1
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          2d.shadow.canvas.transparent.1
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          Shadows are not drawn for transparent canvases
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/shadows/2d.shadow.canvas.transparent.2.html b/testing/web-platform/tests/html/canvas/element/shadows/2d.shadow.canvas.transparent.2.html
new file mode 100644
index 0000000000..c9590543ea
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/shadows/2d.shadow.canvas.transparent.2.html
@@ -0,0 +1,46 @@
+
+
+Canvas test: 2d.shadow.canvas.transparent.2
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            2d.shadow.canvas.transparent.2
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Shadows are not drawn for transparent parts of canvases
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/shadows/2d.shadow.clip.1.html b/testing/web-platform/tests/html/canvas/element/shadows/2d.shadow.clip.1.html
new file mode 100644
index 0000000000..f952096bbd
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/shadows/2d.shadow.clip.1.html
@@ -0,0 +1,42 @@
+
+
+Canvas test: 2d.shadow.clip.1
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.shadow.clip.1
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Shadows of clipped shapes are still drawn within the clipping region
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/shadows/2d.shadow.clip.2.html b/testing/web-platform/tests/html/canvas/element/shadows/2d.shadow.clip.2.html
new file mode 100644
index 0000000000..22208c5ad3
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/shadows/2d.shadow.clip.2.html
@@ -0,0 +1,42 @@
+
+
+Canvas test: 2d.shadow.clip.2
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                2d.shadow.clip.2
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                Shadows are not drawn outside the clipping region
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/shadows/2d.shadow.clip.3.html b/testing/web-platform/tests/html/canvas/element/shadows/2d.shadow.clip.3.html
new file mode 100644
index 0000000000..5af9b012ad
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/shadows/2d.shadow.clip.3.html
@@ -0,0 +1,43 @@
+
+
+Canvas test: 2d.shadow.clip.3
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  2d.shadow.clip.3
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Shadows of clipped shapes are still drawn within the clipping region
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/shadows/2d.shadow.composite.1.html b/testing/web-platform/tests/html/canvas/element/shadows/2d.shadow.composite.1.html
new file mode 100644
index 0000000000..28a82e6586
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/shadows/2d.shadow.composite.1.html
@@ -0,0 +1,35 @@
+
+
+Canvas test: 2d.shadow.composite.1
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    2d.shadow.composite.1
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    Shadows are drawn using globalCompositeOperation
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/shadows/2d.shadow.composite.2.html b/testing/web-platform/tests/html/canvas/element/shadows/2d.shadow.composite.2.html
new file mode 100644
index 0000000000..aeb6dc1053
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/shadows/2d.shadow.composite.2.html
@@ -0,0 +1,35 @@
+
+
+Canvas test: 2d.shadow.composite.2
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      2d.shadow.composite.2
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      Shadows are drawn using globalCompositeOperation
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/shadows/2d.shadow.composite.3.html b/testing/web-platform/tests/html/canvas/element/shadows/2d.shadow.composite.3.html
new file mode 100644
index 0000000000..9a0c02e110
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/shadows/2d.shadow.composite.3.html
@@ -0,0 +1,36 @@
+
+
+Canvas test: 2d.shadow.composite.3
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        2d.shadow.composite.3
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        Areas outside shadows are drawn correctly with destination-out
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/shadows/2d.shadow.enable.blur.html b/testing/web-platform/tests/html/canvas/element/shadows/2d.shadow.enable.blur.html
new file mode 100644
index 0000000000..ffe70f1c38
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/shadows/2d.shadow.enable.blur.html
@@ -0,0 +1,32 @@
+
+
+Canvas test: 2d.shadow.enable.blur
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          2d.shadow.enable.blur
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          Shadows are drawn if shadowBlur is set
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/shadows/2d.shadow.enable.off.1.html b/testing/web-platform/tests/html/canvas/element/shadows/2d.shadow.enable.off.1.html
new file mode 100644
index 0000000000..e3adc9ae89
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/shadows/2d.shadow.enable.off.1.html
@@ -0,0 +1,30 @@
+
+
+Canvas test: 2d.shadow.enable.off.1
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            2d.shadow.enable.off.1
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Shadows are not drawn when only shadowColor is set
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/shadows/2d.shadow.enable.off.2.html b/testing/web-platform/tests/html/canvas/element/shadows/2d.shadow.enable.off.2.html
new file mode 100644
index 0000000000..8dd3fc32d7
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/shadows/2d.shadow.enable.off.2.html
@@ -0,0 +1,31 @@
+
+
+Canvas test: 2d.shadow.enable.off.2
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.shadow.enable.off.2
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Shadows are not drawn when only shadowColor is set
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/shadows/2d.shadow.enable.x.html b/testing/web-platform/tests/html/canvas/element/shadows/2d.shadow.enable.x.html
new file mode 100644
index 0000000000..54fa86e115
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/shadows/2d.shadow.enable.x.html
@@ -0,0 +1,32 @@
+
+
+Canvas test: 2d.shadow.enable.x
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                2d.shadow.enable.x
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                Shadows are drawn if shadowOffsetX is set
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/shadows/2d.shadow.enable.y.html b/testing/web-platform/tests/html/canvas/element/shadows/2d.shadow.enable.y.html
new file mode 100644
index 0000000000..7295d578be
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/shadows/2d.shadow.enable.y.html
@@ -0,0 +1,32 @@
+
+
+Canvas test: 2d.shadow.enable.y
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  2d.shadow.enable.y
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Shadows are drawn if shadowOffsetY is set
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/shadows/2d.shadow.gradient.alpha.html b/testing/web-platform/tests/html/canvas/element/shadows/2d.shadow.gradient.alpha.html
new file mode 100644
index 0000000000..7ae83ebe9a
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/shadows/2d.shadow.gradient.alpha.html
@@ -0,0 +1,37 @@
+
+
+Canvas test: 2d.shadow.gradient.alpha
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    2d.shadow.gradient.alpha
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    Shadows are drawn correctly for partially-transparent gradient fills
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/shadows/2d.shadow.gradient.alpha.png b/testing/web-platform/tests/html/canvas/element/shadows/2d.shadow.gradient.alpha.png
new file mode 100644
index 0000000000..8764e89b37
Binary files /dev/null and b/testing/web-platform/tests/html/canvas/element/shadows/2d.shadow.gradient.alpha.png differ
diff --git a/testing/web-platform/tests/html/canvas/element/shadows/2d.shadow.gradient.basic.html b/testing/web-platform/tests/html/canvas/element/shadows/2d.shadow.gradient.basic.html
new file mode 100644
index 0000000000..233770e0d0
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/shadows/2d.shadow.gradient.basic.html
@@ -0,0 +1,37 @@
+
+
+Canvas test: 2d.shadow.gradient.basic
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      2d.shadow.gradient.basic
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      Shadows are drawn for gradient fills
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/shadows/2d.shadow.gradient.transparent.1.html b/testing/web-platform/tests/html/canvas/element/shadows/2d.shadow.gradient.transparent.1.html
new file mode 100644
index 0000000000..2427c7f59d
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/shadows/2d.shadow.gradient.transparent.1.html
@@ -0,0 +1,37 @@
+
+
+Canvas test: 2d.shadow.gradient.transparent.1
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        2d.shadow.gradient.transparent.1
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        Shadows are not drawn for transparent gradient fills
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/shadows/2d.shadow.gradient.transparent.2.html b/testing/web-platform/tests/html/canvas/element/shadows/2d.shadow.gradient.transparent.2.html
new file mode 100644
index 0000000000..e27b19cc0a
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/shadows/2d.shadow.gradient.transparent.2.html
@@ -0,0 +1,43 @@
+
+
+Canvas test: 2d.shadow.gradient.transparent.2
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          2d.shadow.gradient.transparent.2
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          Shadows are not drawn for transparent parts of gradient fills
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/shadows/2d.shadow.image.alpha.html b/testing/web-platform/tests/html/canvas/element/shadows/2d.shadow.image.alpha.html
new file mode 100644
index 0000000000..2c8133f630
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/shadows/2d.shadow.image.alpha.html
@@ -0,0 +1,34 @@
+
+
+Canvas test: 2d.shadow.image.alpha
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            2d.shadow.image.alpha
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Shadows are drawn correctly for partially-transparent images
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/shadows/2d.shadow.image.alpha.png b/testing/web-platform/tests/html/canvas/element/shadows/2d.shadow.image.alpha.png
new file mode 100644
index 0000000000..8764e89b37
Binary files /dev/null and b/testing/web-platform/tests/html/canvas/element/shadows/2d.shadow.image.alpha.png differ
diff --git a/testing/web-platform/tests/html/canvas/element/shadows/2d.shadow.image.basic.html b/testing/web-platform/tests/html/canvas/element/shadows/2d.shadow.image.basic.html
new file mode 100644
index 0000000000..f91b195e4c
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/shadows/2d.shadow.image.basic.html
@@ -0,0 +1,34 @@
+
+
+Canvas test: 2d.shadow.image.basic
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.shadow.image.basic
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Shadows are drawn for images
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/shadows/2d.shadow.image.scale.html b/testing/web-platform/tests/html/canvas/element/shadows/2d.shadow.image.scale.html
new file mode 100644
index 0000000000..c0edc31373
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/shadows/2d.shadow.image.scale.html
@@ -0,0 +1,36 @@
+
+
+Canvas test: 2d.shadow.image.scale
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                2d.shadow.image.scale
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                Shadows are drawn correctly for scaled images
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/shadows/2d.shadow.image.section.html b/testing/web-platform/tests/html/canvas/element/shadows/2d.shadow.image.section.html
new file mode 100644
index 0000000000..2ff2bf2a24
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/shadows/2d.shadow.image.section.html
@@ -0,0 +1,36 @@
+
+
+Canvas test: 2d.shadow.image.section
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  2d.shadow.image.section
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Shadows are not drawn for areas outside image source rectangles
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/shadows/2d.shadow.image.transparent.1.html b/testing/web-platform/tests/html/canvas/element/shadows/2d.shadow.image.transparent.1.html
new file mode 100644
index 0000000000..c152dc2962
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/shadows/2d.shadow.image.transparent.1.html
@@ -0,0 +1,34 @@
+
+
+Canvas test: 2d.shadow.image.transparent.1
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    2d.shadow.image.transparent.1
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    Shadows are not drawn for transparent images
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/shadows/2d.shadow.image.transparent.2.html b/testing/web-platform/tests/html/canvas/element/shadows/2d.shadow.image.transparent.2.html
new file mode 100644
index 0000000000..636c72d9d6
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/shadows/2d.shadow.image.transparent.2.html
@@ -0,0 +1,40 @@
+
+
+Canvas test: 2d.shadow.image.transparent.2
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      2d.shadow.image.transparent.2
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      Shadows are not drawn for transparent parts of images
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/shadows/2d.shadow.offset.negativeX.html b/testing/web-platform/tests/html/canvas/element/shadows/2d.shadow.offset.negativeX.html
new file mode 100644
index 0000000000..828fe89f00
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/shadows/2d.shadow.offset.negativeX.html
@@ -0,0 +1,34 @@
+
+
+Canvas test: 2d.shadow.offset.negativeX
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        2d.shadow.offset.negativeX
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        Shadows can be offset with negative x
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/shadows/2d.shadow.offset.negativeY.html b/testing/web-platform/tests/html/canvas/element/shadows/2d.shadow.offset.negativeY.html
new file mode 100644
index 0000000000..daf9b7eec0
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/shadows/2d.shadow.offset.negativeY.html
@@ -0,0 +1,34 @@
+
+
+Canvas test: 2d.shadow.offset.negativeY
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          2d.shadow.offset.negativeY
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          Shadows can be offset with negative y
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/shadows/2d.shadow.offset.positiveX.html b/testing/web-platform/tests/html/canvas/element/shadows/2d.shadow.offset.positiveX.html
new file mode 100644
index 0000000000..9d627ddfdd
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/shadows/2d.shadow.offset.positiveX.html
@@ -0,0 +1,34 @@
+
+
+Canvas test: 2d.shadow.offset.positiveX
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            2d.shadow.offset.positiveX
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Shadows can be offset with positive x
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/shadows/2d.shadow.offset.positiveY.html b/testing/web-platform/tests/html/canvas/element/shadows/2d.shadow.offset.positiveY.html
new file mode 100644
index 0000000000..619826342e
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/shadows/2d.shadow.offset.positiveY.html
@@ -0,0 +1,34 @@
+
+
+Canvas test: 2d.shadow.offset.positiveY
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.shadow.offset.positiveY
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Shadows can be offset with positive y
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/shadows/2d.shadow.outside.html b/testing/web-platform/tests/html/canvas/element/shadows/2d.shadow.outside.html
new file mode 100644
index 0000000000..331dca9246
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/shadows/2d.shadow.outside.html
@@ -0,0 +1,42 @@
+
+
+Canvas test: 2d.shadow.outside
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                2d.shadow.outside
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                Shadows of shapes outside the visible area can be offset onto the visible area
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/shadows/2d.shadow.pattern.alpha.html b/testing/web-platform/tests/html/canvas/element/shadows/2d.shadow.pattern.alpha.html
new file mode 100644
index 0000000000..a995a4ab1f
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/shadows/2d.shadow.pattern.alpha.html
@@ -0,0 +1,36 @@
+
+
+Canvas test: 2d.shadow.pattern.alpha
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  2d.shadow.pattern.alpha
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Shadows are drawn correctly for partially-transparent fill patterns
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/shadows/2d.shadow.pattern.alpha.png b/testing/web-platform/tests/html/canvas/element/shadows/2d.shadow.pattern.alpha.png
new file mode 100644
index 0000000000..8764e89b37
Binary files /dev/null and b/testing/web-platform/tests/html/canvas/element/shadows/2d.shadow.pattern.alpha.png differ
diff --git a/testing/web-platform/tests/html/canvas/element/shadows/2d.shadow.pattern.basic.html b/testing/web-platform/tests/html/canvas/element/shadows/2d.shadow.pattern.basic.html
new file mode 100644
index 0000000000..adb8aeaedf
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/shadows/2d.shadow.pattern.basic.html
@@ -0,0 +1,36 @@
+
+
+Canvas test: 2d.shadow.pattern.basic
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    2d.shadow.pattern.basic
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    Shadows are drawn for fill patterns
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/shadows/2d.shadow.pattern.transparent.1.html b/testing/web-platform/tests/html/canvas/element/shadows/2d.shadow.pattern.transparent.1.html
new file mode 100644
index 0000000000..37af35d44d
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/shadows/2d.shadow.pattern.transparent.1.html
@@ -0,0 +1,36 @@
+
+
+Canvas test: 2d.shadow.pattern.transparent.1
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      2d.shadow.pattern.transparent.1
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      Shadows are not drawn for transparent fill patterns
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/shadows/2d.shadow.pattern.transparent.2.html b/testing/web-platform/tests/html/canvas/element/shadows/2d.shadow.pattern.transparent.2.html
new file mode 100644
index 0000000000..e96e9e33a4
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/shadows/2d.shadow.pattern.transparent.2.html
@@ -0,0 +1,40 @@
+
+
+Canvas test: 2d.shadow.pattern.transparent.2
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        2d.shadow.pattern.transparent.2
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        Shadows are not drawn for transparent parts of fill patterns
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/shadows/2d.shadow.stroke.basic.html b/testing/web-platform/tests/html/canvas/element/shadows/2d.shadow.stroke.basic.html
new file mode 100644
index 0000000000..c5834b86dc
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/shadows/2d.shadow.stroke.basic.html
@@ -0,0 +1,40 @@
+
+
+Canvas test: 2d.shadow.stroke.basic
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          2d.shadow.stroke.basic
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          Shadows are drawn for strokes
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/shadows/2d.shadow.stroke.cap.1.html b/testing/web-platform/tests/html/canvas/element/shadows/2d.shadow.stroke.cap.1.html
new file mode 100644
index 0000000000..ff6a1c4c1d
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/shadows/2d.shadow.stroke.cap.1.html
@@ -0,0 +1,43 @@
+
+
+Canvas test: 2d.shadow.stroke.cap.1
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            2d.shadow.stroke.cap.1
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Shadows are not drawn for areas outside stroke caps
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/shadows/2d.shadow.stroke.cap.2.html b/testing/web-platform/tests/html/canvas/element/shadows/2d.shadow.stroke.cap.2.html
new file mode 100644
index 0000000000..40fd22a1c3
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/shadows/2d.shadow.stroke.cap.2.html
@@ -0,0 +1,41 @@
+
+
+Canvas test: 2d.shadow.stroke.cap.2
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.shadow.stroke.cap.2
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Shadows are drawn for stroke caps
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/shadows/2d.shadow.stroke.join.1.html b/testing/web-platform/tests/html/canvas/element/shadows/2d.shadow.stroke.join.1.html
new file mode 100644
index 0000000000..5c7cda8e7b
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/shadows/2d.shadow.stroke.join.1.html
@@ -0,0 +1,43 @@
+
+
+Canvas test: 2d.shadow.stroke.join.1
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                2d.shadow.stroke.join.1
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                Shadows are not drawn for areas outside stroke joins
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/shadows/2d.shadow.stroke.join.2.html b/testing/web-platform/tests/html/canvas/element/shadows/2d.shadow.stroke.join.2.html
new file mode 100644
index 0000000000..0ed3c90cb8
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/shadows/2d.shadow.stroke.join.2.html
@@ -0,0 +1,45 @@
+
+
+Canvas test: 2d.shadow.stroke.join.2
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  2d.shadow.stroke.join.2
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Shadows are drawn for stroke joins
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/shadows/2d.shadow.stroke.join.3.html b/testing/web-platform/tests/html/canvas/element/shadows/2d.shadow.stroke.join.3.html
new file mode 100644
index 0000000000..ada4e159fa
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/shadows/2d.shadow.stroke.join.3.html
@@ -0,0 +1,44 @@
+
+
+Canvas test: 2d.shadow.stroke.join.3
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    2d.shadow.stroke.join.3
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    Shadows are drawn for stroke joins respecting miter limit
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/shadows/2d.shadow.transform.1.html b/testing/web-platform/tests/html/canvas/element/shadows/2d.shadow.transform.1.html
new file mode 100644
index 0000000000..5745051277
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/shadows/2d.shadow.transform.1.html
@@ -0,0 +1,34 @@
+
+
+Canvas test: 2d.shadow.transform.1
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      2d.shadow.transform.1
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      Shadows take account of transformations
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/shadows/2d.shadow.transform.2.html b/testing/web-platform/tests/html/canvas/element/shadows/2d.shadow.transform.2.html
new file mode 100644
index 0000000000..dc97c0672c
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/shadows/2d.shadow.transform.2.html
@@ -0,0 +1,34 @@
+
+
+Canvas test: 2d.shadow.transform.2
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        2d.shadow.transform.2
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        Shadow offsets are not affected by transformations
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/text-styles/2d.text.align.default.html b/testing/web-platform/tests/html/canvas/element/text-styles/2d.text.align.default.html
new file mode 100644
index 0000000000..5c725d4a93
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/text-styles/2d.text.align.default.html
@@ -0,0 +1,27 @@
+
+
+Canvas test: 2d.text.align.default
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          2d.text.align.default
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/text-styles/2d.text.align.invalid.html b/testing/web-platform/tests/html/canvas/element/text-styles/2d.text.align.invalid.html
new file mode 100644
index 0000000000..7c69b5ae34
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/text-styles/2d.text.align.invalid.html
@@ -0,0 +1,41 @@
+
+
+Canvas test: 2d.text.align.invalid
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            2d.text.align.invalid
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/text-styles/2d.text.align.valid.html b/testing/web-platform/tests/html/canvas/element/text-styles/2d.text.align.valid.html
new file mode 100644
index 0000000000..c8fb253a7b
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/text-styles/2d.text.align.valid.html
@@ -0,0 +1,40 @@
+
+
+Canvas test: 2d.text.align.valid
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.text.align.valid
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/text-styles/2d.text.baseline.default.html b/testing/web-platform/tests/html/canvas/element/text-styles/2d.text.baseline.default.html
new file mode 100644
index 0000000000..8e442254f7
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/text-styles/2d.text.baseline.default.html
@@ -0,0 +1,27 @@
+
+
+Canvas test: 2d.text.baseline.default
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                2d.text.baseline.default
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/text-styles/2d.text.baseline.invalid.html b/testing/web-platform/tests/html/canvas/element/text-styles/2d.text.baseline.invalid.html
new file mode 100644
index 0000000000..1b31ce1be0
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/text-styles/2d.text.baseline.invalid.html
@@ -0,0 +1,41 @@
+
+
+Canvas test: 2d.text.baseline.invalid
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  2d.text.baseline.invalid
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/text-styles/2d.text.baseline.valid.html b/testing/web-platform/tests/html/canvas/element/text-styles/2d.text.baseline.valid.html
new file mode 100644
index 0000000000..3e1cb35811
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/text-styles/2d.text.baseline.valid.html
@@ -0,0 +1,43 @@
+
+
+Canvas test: 2d.text.baseline.valid
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    2d.text.baseline.valid
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/text-styles/2d.text.draw.baseline.alphabetic.html b/testing/web-platform/tests/html/canvas/element/text-styles/2d.text.draw.baseline.alphabetic.html
new file mode 100644
index 0000000000..5bbd90f637
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/text-styles/2d.text.draw.baseline.alphabetic.html
@@ -0,0 +1,48 @@
+
+
+Canvas test: 2d.text.draw.baseline.alphabetic
+
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      2d.text.draw.baseline.alphabetic
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
+
+A
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/text-styles/2d.text.draw.baseline.bottom.html b/testing/web-platform/tests/html/canvas/element/text-styles/2d.text.draw.baseline.bottom.html
new file mode 100644
index 0000000000..311be39f4f
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/text-styles/2d.text.draw.baseline.bottom.html
@@ -0,0 +1,48 @@
+
+
+Canvas test: 2d.text.draw.baseline.bottom
+
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        2d.text.draw.baseline.bottom
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        textBaseline bottom is the bottom of the em square (not the bounding box)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
+
+A
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/text-styles/2d.text.draw.baseline.hanging.html b/testing/web-platform/tests/html/canvas/element/text-styles/2d.text.draw.baseline.hanging.html
new file mode 100644
index 0000000000..65aa7cd176
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/text-styles/2d.text.draw.baseline.hanging.html
@@ -0,0 +1,48 @@
+
+
+Canvas test: 2d.text.draw.baseline.hanging
+
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          2d.text.draw.baseline.hanging
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
+
+A
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/text-styles/2d.text.draw.baseline.ideographic.html b/testing/web-platform/tests/html/canvas/element/text-styles/2d.text.draw.baseline.ideographic.html
new file mode 100644
index 0000000000..84f126200a
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/text-styles/2d.text.draw.baseline.ideographic.html
@@ -0,0 +1,48 @@
+
+
+Canvas test: 2d.text.draw.baseline.ideographic
+
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            2d.text.draw.baseline.ideographic
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+
+A
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/text-styles/2d.text.draw.baseline.middle.html b/testing/web-platform/tests/html/canvas/element/text-styles/2d.text.draw.baseline.middle.html
new file mode 100644
index 0000000000..a09a2f3153
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/text-styles/2d.text.draw.baseline.middle.html
@@ -0,0 +1,48 @@
+
+
+Canvas test: 2d.text.draw.baseline.middle
+
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.text.draw.baseline.middle
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              textBaseline middle is the middle of the em square (not the bounding box)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+A
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/text-styles/2d.text.draw.baseline.top.html b/testing/web-platform/tests/html/canvas/element/text-styles/2d.text.draw.baseline.top.html
new file mode 100644
index 0000000000..b0c72c41ea
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/text-styles/2d.text.draw.baseline.top.html
@@ -0,0 +1,48 @@
+
+
+Canvas test: 2d.text.draw.baseline.top
+
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                2d.text.draw.baseline.top
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                textBaseline top is the top of the em square (not the bounding box)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
+
+A
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/text-styles/2d.text.draw.space.collapse.end.html b/testing/web-platform/tests/html/canvas/element/text-styles/2d.text.draw.space.collapse.end.html
new file mode 100644
index 0000000000..57de14adc2
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/text-styles/2d.text.draw.space.collapse.end.html
@@ -0,0 +1,44 @@
+
+
+Canvas test: 2d.text.draw.space.collapse.end
+
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  2d.text.draw.space.collapse.end
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Space characters at the end of a line are collapsed (per CSS)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
+A
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/text-styles/2d.text.draw.space.collapse.other.html b/testing/web-platform/tests/html/canvas/element/text-styles/2d.text.draw.space.collapse.other.html
new file mode 100644
index 0000000000..e593b9769e
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/text-styles/2d.text.draw.space.collapse.other.html
@@ -0,0 +1,43 @@
+
+
+Canvas test: 2d.text.draw.space.collapse.other
+
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    2d.text.draw.space.collapse.other
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    Space characters are converted to U+0020, and collapsed (per CSS)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
+
+A
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/text-styles/2d.text.draw.space.collapse.space.html b/testing/web-platform/tests/html/canvas/element/text-styles/2d.text.draw.space.collapse.space.html
new file mode 100644
index 0000000000..6e24007b1c
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/text-styles/2d.text.draw.space.collapse.space.html
@@ -0,0 +1,43 @@
+
+
+Canvas test: 2d.text.draw.space.collapse.space
+
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      2d.text.draw.space.collapse.space
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      Space characters are converted to U+0020, and collapsed (per CSS)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
+
+A
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/text-styles/2d.text.draw.space.collapse.start.html b/testing/web-platform/tests/html/canvas/element/text-styles/2d.text.draw.space.collapse.start.html
new file mode 100644
index 0000000000..5ec776e324
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/text-styles/2d.text.draw.space.collapse.start.html
@@ -0,0 +1,43 @@
+
+
+Canvas test: 2d.text.draw.space.collapse.start
+
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        2d.text.draw.space.collapse.start
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        Space characters at the start of a line are collapsed (per CSS)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
+
+A
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/text-styles/2d.text.font.default.html b/testing/web-platform/tests/html/canvas/element/text-styles/2d.text.font.default.html
new file mode 100644
index 0000000000..135c9bd84a
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/text-styles/2d.text.font.default.html
@@ -0,0 +1,27 @@
+
+
+Canvas test: 2d.text.font.default
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          2d.text.font.default
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/text-styles/2d.text.font.parse.basic.html b/testing/web-platform/tests/html/canvas/element/text-styles/2d.text.font.parse.basic.html
new file mode 100644
index 0000000000..57db32b688
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/text-styles/2d.text.font.parse.basic.html
@@ -0,0 +1,31 @@
+
+
+Canvas test: 2d.text.font.parse.basic
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            2d.text.font.parse.basic
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/text-styles/2d.text.font.parse.complex.html b/testing/web-platform/tests/html/canvas/element/text-styles/2d.text.font.parse.complex.html
new file mode 100644
index 0000000000..cd6235ed3e
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/text-styles/2d.text.font.parse.complex.html
@@ -0,0 +1,28 @@
+
+
+Canvas test: 2d.text.font.parse.complex
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.text.font.parse.complex
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/text-styles/2d.text.font.parse.family.html b/testing/web-platform/tests/html/canvas/element/text-styles/2d.text.font.parse.family.html
new file mode 100644
index 0000000000..f5c24bdd50
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/text-styles/2d.text.font.parse.family.html
@@ -0,0 +1,28 @@
+
+
+Canvas test: 2d.text.font.parse.family
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                2d.text.font.parse.family
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/text-styles/2d.text.font.parse.invalid.html b/testing/web-platform/tests/html/canvas/element/text-styles/2d.text.font.parse.invalid.html
new file mode 100644
index 0000000000..e2735440ed
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/text-styles/2d.text.font.parse.invalid.html
@@ -0,0 +1,72 @@
+
+
+Canvas test: 2d.text.font.parse.invalid
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  2d.text.font.parse.invalid
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/text-styles/2d.text.font.parse.size.percentage.default.html b/testing/web-platform/tests/html/canvas/element/text-styles/2d.text.font.parse.size.percentage.default.html
new file mode 100644
index 0000000000..65bb5549c4
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/text-styles/2d.text.font.parse.size.percentage.default.html
@@ -0,0 +1,30 @@
+
+
+Canvas test: 2d.text.font.parse.size.percentage.default
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    2d.text.font.parse.size.percentage.default
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/text-styles/2d.text.font.parse.size.percentage.html b/testing/web-platform/tests/html/canvas/element/text-styles/2d.text.font.parse.size.percentage.html
new file mode 100644
index 0000000000..18476b3b7a
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/text-styles/2d.text.font.parse.size.percentage.html
@@ -0,0 +1,30 @@
+
+
+Canvas test: 2d.text.font.parse.size.percentage
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      2d.text.font.parse.size.percentage
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/text-styles/2d.text.font.parse.system.html b/testing/web-platform/tests/html/canvas/element/text-styles/2d.text.font.parse.system.html
new file mode 100644
index 0000000000..707be4ee10
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/text-styles/2d.text.font.parse.system.html
@@ -0,0 +1,28 @@
+
+
+Canvas test: 2d.text.font.parse.system
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        2d.text.font.parse.system
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        System fonts must be computed to explicit values
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/text-styles/2d.text.font.parse.tiny.html b/testing/web-platform/tests/html/canvas/element/text-styles/2d.text.font.parse.tiny.html
new file mode 100644
index 0000000000..e5215f1bc5
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/text-styles/2d.text.font.parse.tiny.html
@@ -0,0 +1,28 @@
+
+
+Canvas test: 2d.text.font.parse.tiny
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          2d.text.font.parse.tiny
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/text-styles/2d.text.font.relative_size.html b/testing/web-platform/tests/html/canvas/element/text-styles/2d.text.font.relative_size.html
new file mode 100644
index 0000000000..8040d38916
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/text-styles/2d.text.font.relative_size.html
@@ -0,0 +1,30 @@
+
+
+Canvas test: 2d.text.font.relative_size
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            2d.text.font.relative_size
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/text-styles/2d.text.measure.width.space.html b/testing/web-platform/tests/html/canvas/element/text-styles/2d.text.measure.width.space.html
new file mode 100644
index 0000000000..4d7ee4ef75
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/text-styles/2d.text.measure.width.space.html
@@ -0,0 +1,48 @@
+
+
+Canvas test: 2d.text.measure.width.space
+
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.text.measure.width.space
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Space characters are converted to U+0020 and collapsed (per CSS)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+A
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/text-styles/parent-style-relative-units.html b/testing/web-platform/tests/html/canvas/element/text-styles/parent-style-relative-units.html
new file mode 100644
index 0000000000..ee44c0b750
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/text-styles/parent-style-relative-units.html
@@ -0,0 +1,22 @@
+
+Canvas test: CanvasTextDrawingStyles.font with canvas relative units
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/the-canvas-state/2d.state.saverestore.bitmap.html b/testing/web-platform/tests/html/canvas/element/the-canvas-state/2d.state.saverestore.bitmap.html
new file mode 100644
index 0000000000..459e0d543f
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/the-canvas-state/2d.state.saverestore.bitmap.html
@@ -0,0 +1,33 @@
+
+
+Canvas test: 2d.state.saverestore.bitmap
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                2d.state.saverestore.bitmap
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                save()/restore() does not affect the current bitmap
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/the-canvas-state/2d.state.saverestore.clip.html b/testing/web-platform/tests/html/canvas/element/the-canvas-state/2d.state.saverestore.clip.html
new file mode 100644
index 0000000000..6d1ab02f89
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/the-canvas-state/2d.state.saverestore.clip.html
@@ -0,0 +1,35 @@
+
+
+Canvas test: 2d.state.saverestore.clip
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  2d.state.saverestore.clip
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  save()/restore() affects the clipping path
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/the-canvas-state/2d.state.saverestore.fillStyle.html b/testing/web-platform/tests/html/canvas/element/the-canvas-state/2d.state.saverestore.fillStyle.html
new file mode 100644
index 0000000000..a57274cc67
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/the-canvas-state/2d.state.saverestore.fillStyle.html
@@ -0,0 +1,41 @@
+
+
+Canvas test: 2d.state.saverestore.fillStyle
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    2d.state.saverestore.fillStyle
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    save()/restore() works for fillStyle
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/the-canvas-state/2d.state.saverestore.font.html b/testing/web-platform/tests/html/canvas/element/the-canvas-state/2d.state.saverestore.font.html
new file mode 100644
index 0000000000..ff674ac3f6
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/the-canvas-state/2d.state.saverestore.font.html
@@ -0,0 +1,41 @@
+
+
+Canvas test: 2d.state.saverestore.font
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      2d.state.saverestore.font
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      save()/restore() works for font
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/the-canvas-state/2d.state.saverestore.globalAlpha.html b/testing/web-platform/tests/html/canvas/element/the-canvas-state/2d.state.saverestore.globalAlpha.html
new file mode 100644
index 0000000000..db48f9693e
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/the-canvas-state/2d.state.saverestore.globalAlpha.html
@@ -0,0 +1,41 @@
+
+
+Canvas test: 2d.state.saverestore.globalAlpha
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        2d.state.saverestore.globalAlpha
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        save()/restore() works for globalAlpha
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/the-canvas-state/2d.state.saverestore.globalCompositeOperation.html b/testing/web-platform/tests/html/canvas/element/the-canvas-state/2d.state.saverestore.globalCompositeOperation.html
new file mode 100644
index 0000000000..cbc4198bbd
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/the-canvas-state/2d.state.saverestore.globalCompositeOperation.html
@@ -0,0 +1,41 @@
+
+
+Canvas test: 2d.state.saverestore.globalCompositeOperation
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          2d.state.saverestore.globalCompositeOperation
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          save()/restore() works for globalCompositeOperation
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/the-canvas-state/2d.state.saverestore.lineCap.html b/testing/web-platform/tests/html/canvas/element/the-canvas-state/2d.state.saverestore.lineCap.html
new file mode 100644
index 0000000000..fafbde6201
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/the-canvas-state/2d.state.saverestore.lineCap.html
@@ -0,0 +1,41 @@
+
+
+Canvas test: 2d.state.saverestore.lineCap
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            2d.state.saverestore.lineCap
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            save()/restore() works for lineCap
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/the-canvas-state/2d.state.saverestore.lineJoin.html b/testing/web-platform/tests/html/canvas/element/the-canvas-state/2d.state.saverestore.lineJoin.html
new file mode 100644
index 0000000000..46d3ec681d
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/the-canvas-state/2d.state.saverestore.lineJoin.html
@@ -0,0 +1,41 @@
+
+
+Canvas test: 2d.state.saverestore.lineJoin
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.state.saverestore.lineJoin
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              save()/restore() works for lineJoin
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/the-canvas-state/2d.state.saverestore.lineWidth.html b/testing/web-platform/tests/html/canvas/element/the-canvas-state/2d.state.saverestore.lineWidth.html
new file mode 100644
index 0000000000..ac96381a7d
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/the-canvas-state/2d.state.saverestore.lineWidth.html
@@ -0,0 +1,41 @@
+
+
+Canvas test: 2d.state.saverestore.lineWidth
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                2d.state.saverestore.lineWidth
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                save()/restore() works for lineWidth
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/the-canvas-state/2d.state.saverestore.miterLimit.html b/testing/web-platform/tests/html/canvas/element/the-canvas-state/2d.state.saverestore.miterLimit.html
new file mode 100644
index 0000000000..ab3c55eaf8
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/the-canvas-state/2d.state.saverestore.miterLimit.html
@@ -0,0 +1,41 @@
+
+
+Canvas test: 2d.state.saverestore.miterLimit
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  2d.state.saverestore.miterLimit
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  save()/restore() works for miterLimit
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/the-canvas-state/2d.state.saverestore.path.html b/testing/web-platform/tests/html/canvas/element/the-canvas-state/2d.state.saverestore.path.html
new file mode 100644
index 0000000000..a8023f1448
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/the-canvas-state/2d.state.saverestore.path.html
@@ -0,0 +1,34 @@
+
+
+Canvas test: 2d.state.saverestore.path
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    2d.state.saverestore.path
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    save()/restore() does not affect the current path
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/the-canvas-state/2d.state.saverestore.shadowBlur.html b/testing/web-platform/tests/html/canvas/element/the-canvas-state/2d.state.saverestore.shadowBlur.html
new file mode 100644
index 0000000000..2525271fe7
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/the-canvas-state/2d.state.saverestore.shadowBlur.html
@@ -0,0 +1,41 @@
+
+
+Canvas test: 2d.state.saverestore.shadowBlur
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      2d.state.saverestore.shadowBlur
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      save()/restore() works for shadowBlur
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/the-canvas-state/2d.state.saverestore.shadowColor.html b/testing/web-platform/tests/html/canvas/element/the-canvas-state/2d.state.saverestore.shadowColor.html
new file mode 100644
index 0000000000..64690e3ef9
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/the-canvas-state/2d.state.saverestore.shadowColor.html
@@ -0,0 +1,41 @@
+
+
+Canvas test: 2d.state.saverestore.shadowColor
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        2d.state.saverestore.shadowColor
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        save()/restore() works for shadowColor
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/the-canvas-state/2d.state.saverestore.shadowOffsetX.html b/testing/web-platform/tests/html/canvas/element/the-canvas-state/2d.state.saverestore.shadowOffsetX.html
new file mode 100644
index 0000000000..a140c3fa0c
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/the-canvas-state/2d.state.saverestore.shadowOffsetX.html
@@ -0,0 +1,41 @@
+
+
+Canvas test: 2d.state.saverestore.shadowOffsetX
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          2d.state.saverestore.shadowOffsetX
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          save()/restore() works for shadowOffsetX
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/the-canvas-state/2d.state.saverestore.shadowOffsetY.html b/testing/web-platform/tests/html/canvas/element/the-canvas-state/2d.state.saverestore.shadowOffsetY.html
new file mode 100644
index 0000000000..8fc9b7c907
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/the-canvas-state/2d.state.saverestore.shadowOffsetY.html
@@ -0,0 +1,41 @@
+
+
+Canvas test: 2d.state.saverestore.shadowOffsetY
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            2d.state.saverestore.shadowOffsetY
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            save()/restore() works for shadowOffsetY
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/the-canvas-state/2d.state.saverestore.stack.html b/testing/web-platform/tests/html/canvas/element/the-canvas-state/2d.state.saverestore.stack.html
new file mode 100644
index 0000000000..252074f41a
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/the-canvas-state/2d.state.saverestore.stack.html
@@ -0,0 +1,36 @@
+
+
+Canvas test: 2d.state.saverestore.stack
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.state.saverestore.stack
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              save()/restore() can be nested as a stack
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/the-canvas-state/2d.state.saverestore.stackdepth.html b/testing/web-platform/tests/html/canvas/element/the-canvas-state/2d.state.saverestore.stackdepth.html
new file mode 100644
index 0000000000..433e83c58a
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/the-canvas-state/2d.state.saverestore.stackdepth.html
@@ -0,0 +1,37 @@
+
+
+Canvas test: 2d.state.saverestore.stackdepth
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                2d.state.saverestore.stackdepth
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                save()/restore() stack depth is not unreasonably limited
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/the-canvas-state/2d.state.saverestore.strokeStyle.html b/testing/web-platform/tests/html/canvas/element/the-canvas-state/2d.state.saverestore.strokeStyle.html
new file mode 100644
index 0000000000..aeae2f8b38
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/the-canvas-state/2d.state.saverestore.strokeStyle.html
@@ -0,0 +1,41 @@
+
+
+Canvas test: 2d.state.saverestore.strokeStyle
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  2d.state.saverestore.strokeStyle
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  save()/restore() works for strokeStyle
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/the-canvas-state/2d.state.saverestore.textAlign.html b/testing/web-platform/tests/html/canvas/element/the-canvas-state/2d.state.saverestore.textAlign.html
new file mode 100644
index 0000000000..3bac234ac3
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/the-canvas-state/2d.state.saverestore.textAlign.html
@@ -0,0 +1,41 @@
+
+
+Canvas test: 2d.state.saverestore.textAlign
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    2d.state.saverestore.textAlign
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    save()/restore() works for textAlign
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/the-canvas-state/2d.state.saverestore.textBaseline.html b/testing/web-platform/tests/html/canvas/element/the-canvas-state/2d.state.saverestore.textBaseline.html
new file mode 100644
index 0000000000..238ee7eba2
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/the-canvas-state/2d.state.saverestore.textBaseline.html
@@ -0,0 +1,41 @@
+
+
+Canvas test: 2d.state.saverestore.textBaseline
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      2d.state.saverestore.textBaseline
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      save()/restore() works for textBaseline
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/the-canvas-state/2d.state.saverestore.transformation.html b/testing/web-platform/tests/html/canvas/element/the-canvas-state/2d.state.saverestore.transformation.html
new file mode 100644
index 0000000000..6d035ef9ea
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/the-canvas-state/2d.state.saverestore.transformation.html
@@ -0,0 +1,34 @@
+
+
+Canvas test: 2d.state.saverestore.transformation
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        2d.state.saverestore.transformation
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        save()/restore() affects the current transformation matrix
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/the-canvas-state/2d.state.saverestore.underflow.html b/testing/web-platform/tests/html/canvas/element/the-canvas-state/2d.state.saverestore.underflow.html
new file mode 100644
index 0000000000..bbf6433e17
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/the-canvas-state/2d.state.saverestore.underflow.html
@@ -0,0 +1,31 @@
+
+
+Canvas test: 2d.state.saverestore.underflow
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          2d.state.saverestore.underflow
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          restore() with an empty stack has no effect
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/transformations/2d.transformation.order.html b/testing/web-platform/tests/html/canvas/element/transformations/2d.transformation.order.html
new file mode 100644
index 0000000000..6c97bf7426
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/transformations/2d.transformation.order.html
@@ -0,0 +1,33 @@
+
+
+Canvas test: 2d.transformation.order
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            2d.transformation.order
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Transformations are applied in the right order
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/transformations/2d.transformation.rotate.direction.html b/testing/web-platform/tests/html/canvas/element/transformations/2d.transformation.rotate.direction.html
new file mode 100644
index 0000000000..0b583cd678
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/transformations/2d.transformation.rotate.direction.html
@@ -0,0 +1,32 @@
+
+
+Canvas test: 2d.transformation.rotate.direction
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.transformation.rotate.direction
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              rotate() is clockwise
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/transformations/2d.transformation.rotate.nonfinite.html b/testing/web-platform/tests/html/canvas/element/transformations/2d.transformation.rotate.nonfinite.html
new file mode 100644
index 0000000000..3e685fa7a8
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/transformations/2d.transformation.rotate.nonfinite.html
@@ -0,0 +1,37 @@
+
+
+Canvas test: 2d.transformation.rotate.nonfinite
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                2d.transformation.rotate.nonfinite
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                rotate() with Infinity/NaN is ignored
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/transformations/2d.transformation.rotate.radians.html b/testing/web-platform/tests/html/canvas/element/transformations/2d.transformation.rotate.radians.html
new file mode 100644
index 0000000000..63f895a0de
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/transformations/2d.transformation.rotate.radians.html
@@ -0,0 +1,32 @@
+
+
+Canvas test: 2d.transformation.rotate.radians
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  2d.transformation.rotate.radians
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  rotate() uses radians
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/transformations/2d.transformation.rotate.wrap.html b/testing/web-platform/tests/html/canvas/element/transformations/2d.transformation.rotate.wrap.html
new file mode 100644
index 0000000000..9b923e0008
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/transformations/2d.transformation.rotate.wrap.html
@@ -0,0 +1,37 @@
+
+
+Canvas test: 2d.transformation.rotate.wrap
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    2d.transformation.rotate.wrap
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    rotate() wraps large positive values correctly
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/transformations/2d.transformation.rotate.wrapnegative.html b/testing/web-platform/tests/html/canvas/element/transformations/2d.transformation.rotate.wrapnegative.html
new file mode 100644
index 0000000000..96894ef20e
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/transformations/2d.transformation.rotate.wrapnegative.html
@@ -0,0 +1,34 @@
+
+
+Canvas test: 2d.transformation.rotate.wrapnegative
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      2d.transformation.rotate.wrapnegative
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      rotate() wraps large negative values correctly
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/transformations/2d.transformation.rotate.zero.html b/testing/web-platform/tests/html/canvas/element/transformations/2d.transformation.rotate.zero.html
new file mode 100644
index 0000000000..7026ea9d1b
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/transformations/2d.transformation.rotate.zero.html
@@ -0,0 +1,32 @@
+
+
+Canvas test: 2d.transformation.rotate.zero
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        2d.transformation.rotate.zero
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        rotate() by 0 does nothing
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/transformations/2d.transformation.scale.basic.html b/testing/web-platform/tests/html/canvas/element/transformations/2d.transformation.scale.basic.html
new file mode 100644
index 0000000000..7e4b3593b1
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/transformations/2d.transformation.scale.basic.html
@@ -0,0 +1,32 @@
+
+
+Canvas test: 2d.transformation.scale.basic
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          2d.transformation.scale.basic
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          scale() works
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/transformations/2d.transformation.scale.large.html b/testing/web-platform/tests/html/canvas/element/transformations/2d.transformation.scale.large.html
new file mode 100644
index 0000000000..ce7f6d9fae
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/transformations/2d.transformation.scale.large.html
@@ -0,0 +1,32 @@
+
+
+Canvas test: 2d.transformation.scale.large
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            2d.transformation.scale.large
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            scale() with large scale factors works
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Not really that large at all, but it hits the limits in Firefox.
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/transformations/2d.transformation.scale.multiple.html b/testing/web-platform/tests/html/canvas/element/transformations/2d.transformation.scale.multiple.html
new file mode 100644
index 0000000000..73bfbc87c1
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/transformations/2d.transformation.scale.multiple.html
@@ -0,0 +1,33 @@
+
+
+Canvas test: 2d.transformation.scale.multiple
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.transformation.scale.multiple
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Multiple scale()s combine
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/transformations/2d.transformation.scale.negative.html b/testing/web-platform/tests/html/canvas/element/transformations/2d.transformation.scale.negative.html
new file mode 100644
index 0000000000..a5aef69b63
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/transformations/2d.transformation.scale.negative.html
@@ -0,0 +1,41 @@
+
+
+Canvas test: 2d.transformation.scale.negative
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                2d.transformation.scale.negative
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                scale() with negative scale factors works
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/transformations/2d.transformation.scale.nonfinite.html b/testing/web-platform/tests/html/canvas/element/transformations/2d.transformation.scale.nonfinite.html
new file mode 100644
index 0000000000..c06f96eb22
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/transformations/2d.transformation.scale.nonfinite.html
@@ -0,0 +1,41 @@
+
+
+Canvas test: 2d.transformation.scale.nonfinite
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  2d.transformation.scale.nonfinite
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  scale() with Infinity/NaN is ignored
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/transformations/2d.transformation.scale.zero.html b/testing/web-platform/tests/html/canvas/element/transformations/2d.transformation.scale.zero.html
new file mode 100644
index 0000000000..ae15034a19
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/transformations/2d.transformation.scale.zero.html
@@ -0,0 +1,43 @@
+
+
+Canvas test: 2d.transformation.scale.zero
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    2d.transformation.scale.zero
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    scale() with a scale factor of zero works
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/transformations/2d.transformation.setTransform.multiple.html b/testing/web-platform/tests/html/canvas/element/transformations/2d.transformation.setTransform.multiple.html
new file mode 100644
index 0000000000..099831e638
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/transformations/2d.transformation.setTransform.multiple.html
@@ -0,0 +1,34 @@
+
+
+Canvas test: 2d.transformation.setTransform.multiple
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      2d.transformation.setTransform.multiple
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/transformations/2d.transformation.setTransform.nonfinite.html b/testing/web-platform/tests/html/canvas/element/transformations/2d.transformation.setTransform.nonfinite.html
new file mode 100644
index 0000000000..019493ad16
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/transformations/2d.transformation.setTransform.nonfinite.html
@@ -0,0 +1,109 @@
+
+
+Canvas test: 2d.transformation.setTransform.nonfinite
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        2d.transformation.setTransform.nonfinite
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        setTransform() with Infinity/NaN is ignored
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/transformations/2d.transformation.setTransform.skewed.html b/testing/web-platform/tests/html/canvas/element/transformations/2d.transformation.setTransform.skewed.html
new file mode 100644
index 0000000000..f6f8655b1e
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/transformations/2d.transformation.setTransform.skewed.html
@@ -0,0 +1,54 @@
+
+
+Canvas test: 2d.transformation.setTransform.skewed
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          2d.transformation.setTransform.skewed
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/transformations/2d.transformation.transform.identity.html b/testing/web-platform/tests/html/canvas/element/transformations/2d.transformation.transform.identity.html
new file mode 100644
index 0000000000..be5de19a45
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/transformations/2d.transformation.transform.identity.html
@@ -0,0 +1,32 @@
+
+
+Canvas test: 2d.transformation.transform.identity
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            2d.transformation.transform.identity
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            transform() with the identity matrix does nothing
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/transformations/2d.transformation.transform.multiply.html b/testing/web-platform/tests/html/canvas/element/transformations/2d.transformation.transform.multiply.html
new file mode 100644
index 0000000000..1e8e4cccdf
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/transformations/2d.transformation.transform.multiply.html
@@ -0,0 +1,33 @@
+
+
+Canvas test: 2d.transformation.transform.multiply
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.transformation.transform.multiply
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              transform() multiplies the CTM
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/transformations/2d.transformation.transform.nonfinite.html b/testing/web-platform/tests/html/canvas/element/transformations/2d.transformation.transform.nonfinite.html
new file mode 100644
index 0000000000..d3fae8520c
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/transformations/2d.transformation.transform.nonfinite.html
@@ -0,0 +1,109 @@
+
+
+Canvas test: 2d.transformation.transform.nonfinite
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                2d.transformation.transform.nonfinite
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                transform() with Infinity/NaN is ignored
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/transformations/2d.transformation.transform.skewed.html b/testing/web-platform/tests/html/canvas/element/transformations/2d.transformation.transform.skewed.html
new file mode 100644
index 0000000000..c69756bc1d
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/transformations/2d.transformation.transform.skewed.html
@@ -0,0 +1,54 @@
+
+
+Canvas test: 2d.transformation.transform.skewed
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  2d.transformation.transform.skewed
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  transform() with skewy matrix transforms correctly
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/transformations/2d.transformation.translate.basic.html b/testing/web-platform/tests/html/canvas/element/transformations/2d.transformation.translate.basic.html
new file mode 100644
index 0000000000..189a1544b6
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/transformations/2d.transformation.translate.basic.html
@@ -0,0 +1,32 @@
+
+
+Canvas test: 2d.transformation.translate.basic
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    2d.transformation.translate.basic
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    translate() works
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/transformations/2d.transformation.translate.nonfinite.html b/testing/web-platform/tests/html/canvas/element/transformations/2d.transformation.translate.nonfinite.html
new file mode 100644
index 0000000000..0857693aff
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/transformations/2d.transformation.translate.nonfinite.html
@@ -0,0 +1,41 @@
+
+
+Canvas test: 2d.transformation.translate.nonfinite
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      2d.transformation.translate.nonfinite
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      translate() with Infinity/NaN is ignored
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/video/2d.video.invalid.html b/testing/web-platform/tests/html/canvas/element/video/2d.video.invalid.html
new file mode 100644
index 0000000000..22b4e054f8
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/video/2d.video.invalid.html
@@ -0,0 +1,30 @@
+
+
+Canvas test: 2d.video.invalid
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        2d.video.invalid
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        Verify test doesn't crash with invalid video.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/wide-gamut-canvas/2d.color.space.p3.fillText.html b/testing/web-platform/tests/html/canvas/element/wide-gamut-canvas/2d.color.space.p3.fillText.html
new file mode 100644
index 0000000000..9c3d1b3374
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/wide-gamut-canvas/2d.color.space.p3.fillText.html
@@ -0,0 +1,58 @@
+
+
+Canvas test: 2d.color.space.p3.fillText
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          2d.color.space.p3.fillText
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          Test if fillText can be used with a solid display-p3 color
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/wide-gamut-canvas/2d.color.space.p3.fillText.shadow.html b/testing/web-platform/tests/html/canvas/element/wide-gamut-canvas/2d.color.space.p3.fillText.shadow.html
new file mode 100644
index 0000000000..cc459fb2cd
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/wide-gamut-canvas/2d.color.space.p3.fillText.shadow.html
@@ -0,0 +1,62 @@
+
+
+Canvas test: 2d.color.space.p3.fillText.shadow
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            2d.color.space.p3.fillText.shadow
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Test if fillText can be used with a display-p3 shadow color
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/wide-gamut-canvas/2d.color.space.p3.strokeText.html b/testing/web-platform/tests/html/canvas/element/wide-gamut-canvas/2d.color.space.p3.strokeText.html
new file mode 100644
index 0000000000..626a41b49b
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/wide-gamut-canvas/2d.color.space.p3.strokeText.html
@@ -0,0 +1,59 @@
+
+
+Canvas test: 2d.color.space.p3.strokeText
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.color.space.p3.strokeText
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Test if strokeText can be used with a solid display-p3 color
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/wide-gamut-canvas/2d.color.space.p3.to.p3.html b/testing/web-platform/tests/html/canvas/element/wide-gamut-canvas/2d.color.space.p3.to.p3.html
new file mode 100644
index 0000000000..a03f49740f
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/wide-gamut-canvas/2d.color.space.p3.to.p3.html
@@ -0,0 +1,38 @@
+
+
+Canvas test: 2d.color.space.p3.to.p3
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                2d.color.space.p3.to.p3
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                test getImageData with display-p3 and uint8 from display p3 uint8 canvas
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/wide-gamut-canvas/2d.color.space.p3.to.srgb.html b/testing/web-platform/tests/html/canvas/element/wide-gamut-canvas/2d.color.space.p3.to.srgb.html
new file mode 100644
index 0000000000..0433ae38c7
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/wide-gamut-canvas/2d.color.space.p3.to.srgb.html
@@ -0,0 +1,37 @@
+
+
+Canvas test: 2d.color.space.p3.to.srgb
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  2d.color.space.p3.to.srgb
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  test getImageData with srsb and uint8 from display p3 uint8 canvas
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/wide-gamut-canvas/2d.color.space.p3.toBlob.p3.canvas.html b/testing/web-platform/tests/html/canvas/element/wide-gamut-canvas/2d.color.space.p3.toBlob.p3.canvas.html
new file mode 100644
index 0000000000..1a44af20a6
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/wide-gamut-canvas/2d.color.space.p3.toBlob.p3.canvas.html
@@ -0,0 +1,50 @@
+
+
+Canvas test: 2d.color.space.p3.toBlob.p3.canvas
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    2d.color.space.p3.toBlob.p3.canvas
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    test if toblob returns p3 data from p3 color space canvas
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/wide-gamut-canvas/2d.color.space.p3.toBlob.with.putImageData.html b/testing/web-platform/tests/html/canvas/element/wide-gamut-canvas/2d.color.space.p3.toBlob.with.putImageData.html
new file mode 100644
index 0000000000..a53de72259
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/wide-gamut-canvas/2d.color.space.p3.toBlob.with.putImageData.html
@@ -0,0 +1,56 @@
+
+
+Canvas test: 2d.color.space.p3.toBlob.with.putImageData
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      2d.color.space.p3.toBlob.with.putImageData
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      Use putImageData to put some p3 data in canvas and test if toBlob returns the same data
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/wide-gamut-canvas/2d.color.space.p3.toDataURL.jpeg.p3.canvas.html b/testing/web-platform/tests/html/canvas/element/wide-gamut-canvas/2d.color.space.p3.toDataURL.jpeg.p3.canvas.html
new file mode 100644
index 0000000000..e0986cb8e8
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/wide-gamut-canvas/2d.color.space.p3.toDataURL.jpeg.p3.canvas.html
@@ -0,0 +1,46 @@
+
+
+Canvas test: 2d.color.space.p3.toDataURL.jpeg.p3.canvas
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        2d.color.space.p3.toDataURL.jpeg.p3.canvas
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        test if toDataURL('image/jpeg') returns p3 data from canvas with p3 color space
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/wide-gamut-canvas/2d.color.space.p3.toDataURL.p3.canvas.html b/testing/web-platform/tests/html/canvas/element/wide-gamut-canvas/2d.color.space.p3.toDataURL.p3.canvas.html
new file mode 100644
index 0000000000..94ba703980
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/wide-gamut-canvas/2d.color.space.p3.toDataURL.p3.canvas.html
@@ -0,0 +1,46 @@
+
+
+Canvas test: 2d.color.space.p3.toDataURL.p3.canvas
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          2d.color.space.p3.toDataURL.p3.canvas
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          test if toDataURL returns p3 data from canvas with p3 color space
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+
diff --git a/testing/web-platform/tests/html/canvas/element/wide-gamut-canvas/2d.color.space.p3.toDataURL.with.putImageData.html b/testing/web-platform/tests/html/canvas/element/wide-gamut-canvas/2d.color.space.p3.toDataURL.with.putImageData.html
new file mode 100644
index 0000000000..58d0718eba
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/wide-gamut-canvas/2d.color.space.p3.toDataURL.with.putImageData.html
@@ -0,0 +1,53 @@
+
+
+Canvas test: 2d.color.space.p3.toDataURL.with.putImageData
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            2d.color.space.p3.toDataURL.with.putImageData
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Use putImageData to put some p3 data in canvas and test if toDataURL returns the same data
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/2d.conformance.requirements.basics.html b/testing/web-platform/tests/html/canvas/offscreen/2d.conformance.requirements.basics.html
new file mode 100644
index 0000000000..a89ec10f9b
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/2d.conformance.requirements.basics.html
@@ -0,0 +1,62 @@
+
+
+OffscreenCanvas test: 2d.conformance.requirements.basics
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.conformance.requirements.basics
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              void methods return undefined
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Defined in "Web IDL" (draft)
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/2d.conformance.requirements.basics.worker.js b/testing/web-platform/tests/html/canvas/offscreen/2d.conformance.requirements.basics.worker.js
new file mode 100644
index 0000000000..8d6ddc894f
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/2d.conformance.requirements.basics.worker.js
@@ -0,0 +1,58 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.conformance.requirements.basics
+// Description:void methods return undefined
+// Note:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Defined in "Web IDL" (draft)
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("void methods return undefined");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+_assertSame(ctx.save(), undefined, "ctx.save()", "undefined");
+_assertSame(ctx.restore(), undefined, "ctx.restore()", "undefined");
+_assertSame(ctx.scale(1, 1), undefined, "ctx.scale(1, 1)", "undefined");
+_assertSame(ctx.rotate(0), undefined, "ctx.rotate(0)", "undefined");
+_assertSame(ctx.translate(0, 0), undefined, "ctx.translate(0, 0)", "undefined");
+if (ctx.transform) { // (avoid spurious failures, since the aim here is not to test that all features are supported)
+    _assertSame(ctx.transform(1, 0, 0, 1, 0, 0), undefined, "ctx.transform(1, 0, 0, 1, 0, 0)", "undefined");
+}
+if (ctx.setTransform) {
+    _assertSame(ctx.setTransform(1, 0, 0, 1, 0, 0), undefined, "ctx.setTransform(1, 0, 0, 1, 0, 0)", "undefined");
+    _assertSame(ctx.setTransform(), undefined, "ctx.setTransform()", "undefined");
+}
+_assertSame(ctx.clearRect(0, 0, 0, 0), undefined, "ctx.clearRect(0, 0, 0, 0)", "undefined");
+_assertSame(ctx.fillRect(0, 0, 0, 0), undefined, "ctx.fillRect(0, 0, 0, 0)", "undefined");
+_assertSame(ctx.strokeRect(0, 0, 0, 0), undefined, "ctx.strokeRect(0, 0, 0, 0)", "undefined");
+_assertSame(ctx.beginPath(), undefined, "ctx.beginPath()", "undefined");
+_assertSame(ctx.closePath(), undefined, "ctx.closePath()", "undefined");
+_assertSame(ctx.moveTo(0, 0), undefined, "ctx.moveTo(0, 0)", "undefined");
+_assertSame(ctx.lineTo(0, 0), undefined, "ctx.lineTo(0, 0)", "undefined");
+_assertSame(ctx.quadraticCurveTo(0, 0, 0, 0), undefined, "ctx.quadraticCurveTo(0, 0, 0, 0)", "undefined");
+_assertSame(ctx.bezierCurveTo(0, 0, 0, 0, 0, 0), undefined, "ctx.bezierCurveTo(0, 0, 0, 0, 0, 0)", "undefined");
+_assertSame(ctx.arcTo(0, 0, 0, 0, 1), undefined, "ctx.arcTo(0, 0, 0, 0, 1)", "undefined");
+_assertSame(ctx.rect(0, 0, 0, 0), undefined, "ctx.rect(0, 0, 0, 0)", "undefined");
+_assertSame(ctx.arc(0, 0, 1, 0, 0, true), undefined, "ctx.arc(0, 0, 1, 0, 0, true)", "undefined");
+_assertSame(ctx.fill(), undefined, "ctx.fill()", "undefined");
+_assertSame(ctx.stroke(), undefined, "ctx.stroke()", "undefined");
+_assertSame(ctx.clip(), undefined, "ctx.clip()", "undefined");
+if (ctx.fillText) {
+    _assertSame(ctx.fillText('test', 0, 0), undefined, "ctx.fillText('test', 0, 0)", "undefined");
+    _assertSame(ctx.strokeText('test', 0, 0), undefined, "ctx.strokeText('test', 0, 0)", "undefined");
+}
+if (ctx.putImageData) {
+    _assertSame(ctx.putImageData(ctx.getImageData(0, 0, 1, 1), 0, 0), undefined, "ctx.putImageData(ctx.getImageData(0, 0, 1, 1), 0, 0)", "undefined");
+}
+_assertSame(ctx.drawImage(canvas, 0, 0, 1, 1, 0, 0, 0, 0), undefined, "ctx.drawImage(canvas, 0, 0, 1, 1, 0, 0, 0, 0)", "undefined");
+_assertSame(ctx.createLinearGradient(0, 0, 0, 0).addColorStop(0, 'white'), undefined, "ctx.createLinearGradient(0, 0, 0, 0).addColorStop(0, 'white')", "undefined");
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/2d.conformance.requirements.missingargs.html b/testing/web-platform/tests/html/canvas/offscreen/2d.conformance.requirements.missingargs.html
new file mode 100644
index 0000000000..cfbbca9e5e
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/2d.conformance.requirements.missingargs.html
@@ -0,0 +1,141 @@
+
+
+OffscreenCanvas test: 2d.conformance.requirements.missingargs
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.conformance.requirements.missingargs
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Missing arguments cause TypeError
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/2d.conformance.requirements.missingargs.worker.js b/testing/web-platform/tests/html/canvas/offscreen/2d.conformance.requirements.missingargs.worker.js
new file mode 100644
index 0000000000..fe1b111f05
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/2d.conformance.requirements.missingargs.worker.js
@@ -0,0 +1,137 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.conformance.requirements.missingargs
+// Description:Missing arguments cause TypeError
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("Missing arguments cause TypeError");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+assert_throws_js(TypeError, function() { ctx.scale(); });
+assert_throws_js(TypeError, function() { ctx.scale(1); });
+assert_throws_js(TypeError, function() { ctx.rotate(); });
+assert_throws_js(TypeError, function() { ctx.translate(); });
+assert_throws_js(TypeError, function() { ctx.translate(0); });
+if (ctx.transform) { // (avoid spurious failures, since the aim here is not to test that all features are supported)
+    assert_throws_js(TypeError, function() { ctx.transform(); });
+    assert_throws_js(TypeError, function() { ctx.transform(1); });
+    assert_throws_js(TypeError, function() { ctx.transform(1, 0); });
+    assert_throws_js(TypeError, function() { ctx.transform(1, 0, 0); });
+    assert_throws_js(TypeError, function() { ctx.transform(1, 0, 0, 1); });
+    assert_throws_js(TypeError, function() { ctx.transform(1, 0, 0, 1, 0); });
+}
+if (ctx.setTransform) {
+    assert_throws_js(TypeError, function() { ctx.setTransform(1); });
+    assert_throws_js(TypeError, function() { ctx.setTransform(1, 0); });
+    assert_throws_js(TypeError, function() { ctx.setTransform(1, 0, 0); });
+    assert_throws_js(TypeError, function() { ctx.setTransform(1, 0, 0, 1); });
+    assert_throws_js(TypeError, function() { ctx.setTransform(1, 0, 0, 1, 0); });
+}
+assert_throws_js(TypeError, function() { ctx.createLinearGradient(); });
+assert_throws_js(TypeError, function() { ctx.createLinearGradient(0); });
+assert_throws_js(TypeError, function() { ctx.createLinearGradient(0, 0); });
+assert_throws_js(TypeError, function() { ctx.createLinearGradient(0, 0, 1); });
+assert_throws_js(TypeError, function() { ctx.createRadialGradient(); });
+assert_throws_js(TypeError, function() { ctx.createRadialGradient(0); });
+assert_throws_js(TypeError, function() { ctx.createRadialGradient(0, 0); });
+assert_throws_js(TypeError, function() { ctx.createRadialGradient(0, 0, 1); });
+assert_throws_js(TypeError, function() { ctx.createRadialGradient(0, 0, 1, 0); });
+assert_throws_js(TypeError, function() { ctx.createRadialGradient(0, 0, 1, 0, 0); });
+assert_throws_js(TypeError, function() { ctx.createPattern(canvas); });
+assert_throws_js(TypeError, function() { ctx.clearRect(); });
+assert_throws_js(TypeError, function() { ctx.clearRect(0); });
+assert_throws_js(TypeError, function() { ctx.clearRect(0, 0); });
+assert_throws_js(TypeError, function() { ctx.clearRect(0, 0, 0); });
+assert_throws_js(TypeError, function() { ctx.fillRect(); });
+assert_throws_js(TypeError, function() { ctx.fillRect(0); });
+assert_throws_js(TypeError, function() { ctx.fillRect(0, 0); });
+assert_throws_js(TypeError, function() { ctx.fillRect(0, 0, 0); });
+assert_throws_js(TypeError, function() { ctx.strokeRect(); });
+assert_throws_js(TypeError, function() { ctx.strokeRect(0); });
+assert_throws_js(TypeError, function() { ctx.strokeRect(0, 0); });
+assert_throws_js(TypeError, function() { ctx.strokeRect(0, 0, 0); });
+assert_throws_js(TypeError, function() { ctx.moveTo(); });
+assert_throws_js(TypeError, function() { ctx.moveTo(0); });
+assert_throws_js(TypeError, function() { ctx.lineTo(); });
+assert_throws_js(TypeError, function() { ctx.lineTo(0); });
+assert_throws_js(TypeError, function() { ctx.quadraticCurveTo(); });
+assert_throws_js(TypeError, function() { ctx.quadraticCurveTo(0); });
+assert_throws_js(TypeError, function() { ctx.quadraticCurveTo(0, 0); });
+assert_throws_js(TypeError, function() { ctx.quadraticCurveTo(0, 0, 0); });
+assert_throws_js(TypeError, function() { ctx.bezierCurveTo(); });
+assert_throws_js(TypeError, function() { ctx.bezierCurveTo(0); });
+assert_throws_js(TypeError, function() { ctx.bezierCurveTo(0, 0); });
+assert_throws_js(TypeError, function() { ctx.bezierCurveTo(0, 0, 0); });
+assert_throws_js(TypeError, function() { ctx.bezierCurveTo(0, 0, 0, 0); });
+assert_throws_js(TypeError, function() { ctx.bezierCurveTo(0, 0, 0, 0, 0); });
+assert_throws_js(TypeError, function() { ctx.arcTo(); });
+assert_throws_js(TypeError, function() { ctx.arcTo(0); });
+assert_throws_js(TypeError, function() { ctx.arcTo(0, 0); });
+assert_throws_js(TypeError, function() { ctx.arcTo(0, 0, 0); });
+assert_throws_js(TypeError, function() { ctx.arcTo(0, 0, 0, 0); });
+assert_throws_js(TypeError, function() { ctx.rect(); });
+assert_throws_js(TypeError, function() { ctx.rect(0); });
+assert_throws_js(TypeError, function() { ctx.rect(0, 0); });
+assert_throws_js(TypeError, function() { ctx.rect(0, 0, 0); });
+assert_throws_js(TypeError, function() { ctx.arc(); });
+assert_throws_js(TypeError, function() { ctx.arc(0); });
+assert_throws_js(TypeError, function() { ctx.arc(0, 0); });
+assert_throws_js(TypeError, function() { ctx.arc(0, 0, 1); });
+assert_throws_js(TypeError, function() { ctx.arc(0, 0, 1, 0); });
+// (6th argument to arc is optional)
+if (ctx.isPointInPath) {
+    assert_throws_js(TypeError, function() { ctx.isPointInPath(); });
+    assert_throws_js(TypeError, function() { ctx.isPointInPath(0); });
+}
+if (ctx.drawFocusRing) {
+    assert_throws_js(TypeError, function() { ctx.drawFocusRing(); });
+    assert_throws_js(TypeError, function() { ctx.drawFocusRing(canvas); });
+    assert_throws_js(TypeError, function() { ctx.drawFocusRing(canvas, 0); });
+}
+if (ctx.fillText) {
+    assert_throws_js(TypeError, function() { ctx.fillText(); });
+    assert_throws_js(TypeError, function() { ctx.fillText('test'); });
+    assert_throws_js(TypeError, function() { ctx.fillText('test', 0); });
+    assert_throws_js(TypeError, function() { ctx.strokeText(); });
+    assert_throws_js(TypeError, function() { ctx.strokeText('test'); });
+    assert_throws_js(TypeError, function() { ctx.strokeText('test', 0); });
+    assert_throws_js(TypeError, function() { ctx.measureText(); });
+}
+assert_throws_js(TypeError, function() { ctx.drawImage(); });
+assert_throws_js(TypeError, function() { ctx.drawImage(canvas); });
+assert_throws_js(TypeError, function() { ctx.drawImage(canvas, 0); });
+// TODO: n >= 3 args on drawImage could be either a valid overload,
+// or too few for another overload, or too many for another
+// overload - what should happen?
+if (ctx.createImageData) {
+    assert_throws_js(TypeError, function() { ctx.createImageData(); });
+    assert_throws_js(TypeError, function() { ctx.createImageData(1); });
+}
+if (ctx.getImageData) {
+    assert_throws_js(TypeError, function() { ctx.getImageData(); });
+    assert_throws_js(TypeError, function() { ctx.getImageData(0); });
+    assert_throws_js(TypeError, function() { ctx.getImageData(0, 0); });
+    assert_throws_js(TypeError, function() { ctx.getImageData(0, 0, 1); });
+}
+if (ctx.putImageData) {
+    var imgdata = ctx.getImageData(0, 0, 1, 1);
+    assert_throws_js(TypeError, function() { ctx.putImageData(); });
+    assert_throws_js(TypeError, function() { ctx.putImageData(imgdata); });
+    assert_throws_js(TypeError, function() { ctx.putImageData(imgdata, 0); });
+}
+var g = ctx.createLinearGradient(0, 0, 0, 0);
+assert_throws_js(TypeError, function() { g.addColorStop(); });
+assert_throws_js(TypeError, function() { g.addColorStop(0); });
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/META.yml b/testing/web-platform/tests/html/canvas/offscreen/META.yml
new file mode 100644
index 0000000000..d0524194c9
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/META.yml
@@ -0,0 +1,7 @@
+spec: https://html.spec.whatwg.org/multipage/canvas.html#the-offscreencanvas-interface
+suggested_reviewers:
+  - AmeliaBR
+  - annevk
+  - kenrussell
+  - fserb
+  - Cwiiis
diff --git a/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.canvas.clear.html b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.canvas.clear.html
new file mode 100644
index 0000000000..0dad0853d3
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.canvas.clear.html
@@ -0,0 +1,47 @@
+
+
+OffscreenCanvas test: 2d.composite.canvas.clear
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.composite.canvas.clear
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.canvas.clear.worker.js b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.canvas.clear.worker.js
new file mode 100644
index 0000000000..a06cbdc206
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.canvas.clear.worker.js
@@ -0,0 +1,43 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.composite.canvas.clear
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+
+var offscreenCanvas2 = new OffscreenCanvas(canvas.width, canvas.height);
+var ctx2 = offscreenCanvas2.getContext('2d');
+var promise = new Promise(function(resolve, reject) {
+    var xhr = new XMLHttpRequest();
+    xhr.open("GET", '/images/yellow75.png');
+    xhr.responseType = 'blob';
+    xhr.send();
+    xhr.onload = function() {
+        resolve(xhr.response);
+    };
+});
+promise.then(function(response) {
+    createImageBitmap(response).then(bitmap => {
+        ctx2.drawImage(bitmap, 0, 0);
+        ctx.fillStyle = 'rgba(0, 255, 255, 0.5)';
+        ctx.fillRect(0, 0, 100, 50);
+        ctx.globalCompositeOperation = 'clear';
+        ctx.drawImage(offscreenCanvas2, 0, 0);
+        _assertPixelApprox(canvas, 50,25, 0,0,0,0, 5);
+    }, t_fail);
+}).then(t_pass, t_fail);
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.canvas.copy.html b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.canvas.copy.html
new file mode 100644
index 0000000000..a89736b579
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.canvas.copy.html
@@ -0,0 +1,47 @@
+
+
+OffscreenCanvas test: 2d.composite.canvas.copy
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.composite.canvas.copy
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.canvas.copy.worker.js b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.canvas.copy.worker.js
new file mode 100644
index 0000000000..a8fbc74c1c
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.canvas.copy.worker.js
@@ -0,0 +1,43 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.composite.canvas.copy
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+
+var offscreenCanvas2 = new OffscreenCanvas(canvas.width, canvas.height);
+var ctx2 = offscreenCanvas2.getContext('2d');
+var promise = new Promise(function(resolve, reject) {
+    var xhr = new XMLHttpRequest();
+    xhr.open("GET", '/images/yellow75.png');
+    xhr.responseType = 'blob';
+    xhr.send();
+    xhr.onload = function() {
+        resolve(xhr.response);
+    };
+});
+promise.then(function(response) {
+    createImageBitmap(response).then(bitmap => {
+        ctx2.drawImage(bitmap, 0, 0);
+        ctx.fillStyle = 'rgba(0, 255, 255, 0.5)';
+        ctx.fillRect(0, 0, 100, 50);
+        ctx.globalCompositeOperation = 'copy';
+        ctx.drawImage(offscreenCanvas2, 0, 0);
+        _assertPixelApprox(canvas, 50,25, 255,255,0,191, 5);
+    }, t_fail);
+}).then(t_pass, t_fail);
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.canvas.destination-atop.html b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.canvas.destination-atop.html
new file mode 100644
index 0000000000..dc53e8b5f0
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.canvas.destination-atop.html
@@ -0,0 +1,47 @@
+
+
+OffscreenCanvas test: 2d.composite.canvas.destination-atop
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.composite.canvas.destination-atop
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.canvas.destination-atop.worker.js b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.canvas.destination-atop.worker.js
new file mode 100644
index 0000000000..fcb944543c
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.canvas.destination-atop.worker.js
@@ -0,0 +1,43 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.composite.canvas.destination-atop
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+
+var offscreenCanvas2 = new OffscreenCanvas(canvas.width, canvas.height);
+var ctx2 = offscreenCanvas2.getContext('2d');
+var promise = new Promise(function(resolve, reject) {
+    var xhr = new XMLHttpRequest();
+    xhr.open("GET", '/images/yellow75.png');
+    xhr.responseType = 'blob';
+    xhr.send();
+    xhr.onload = function() {
+        resolve(xhr.response);
+    };
+});
+promise.then(function(response) {
+    createImageBitmap(response).then(bitmap => {
+        ctx2.drawImage(bitmap, 0, 0);
+        ctx.fillStyle = 'rgba(0, 255, 255, 0.5)';
+        ctx.fillRect(0, 0, 100, 50);
+        ctx.globalCompositeOperation = 'destination-atop';
+        ctx.drawImage(offscreenCanvas2, 0, 0);
+        _assertPixelApprox(canvas, 50,25, 128,255,128,191, 5);
+    }, t_fail);
+}).then(t_pass, t_fail);
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.canvas.destination-in.html b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.canvas.destination-in.html
new file mode 100644
index 0000000000..73140e11df
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.canvas.destination-in.html
@@ -0,0 +1,47 @@
+
+
+OffscreenCanvas test: 2d.composite.canvas.destination-in
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.composite.canvas.destination-in
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.canvas.destination-in.worker.js b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.canvas.destination-in.worker.js
new file mode 100644
index 0000000000..e5d7f0b039
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.canvas.destination-in.worker.js
@@ -0,0 +1,43 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.composite.canvas.destination-in
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+
+var offscreenCanvas2 = new OffscreenCanvas(canvas.width, canvas.height);
+var ctx2 = offscreenCanvas2.getContext('2d');
+var promise = new Promise(function(resolve, reject) {
+    var xhr = new XMLHttpRequest();
+    xhr.open("GET", '/images/yellow75.png');
+    xhr.responseType = 'blob';
+    xhr.send();
+    xhr.onload = function() {
+        resolve(xhr.response);
+    };
+});
+promise.then(function(response) {
+    createImageBitmap(response).then(bitmap => {
+        ctx2.drawImage(bitmap, 0, 0);
+        ctx.fillStyle = 'rgba(0, 255, 255, 0.5)';
+        ctx.fillRect(0, 0, 100, 50);
+        ctx.globalCompositeOperation = 'destination-in';
+        ctx.drawImage(offscreenCanvas2, 0, 0);
+        _assertPixelApprox(canvas, 50,25, 0,255,255,96, 5);
+    }, t_fail);
+}).then(t_pass, t_fail);
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.canvas.destination-out.html b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.canvas.destination-out.html
new file mode 100644
index 0000000000..5f89aa29f7
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.canvas.destination-out.html
@@ -0,0 +1,47 @@
+
+
+OffscreenCanvas test: 2d.composite.canvas.destination-out
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.composite.canvas.destination-out
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.canvas.destination-out.worker.js b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.canvas.destination-out.worker.js
new file mode 100644
index 0000000000..a4436be0d2
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.canvas.destination-out.worker.js
@@ -0,0 +1,43 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.composite.canvas.destination-out
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+
+var offscreenCanvas2 = new OffscreenCanvas(canvas.width, canvas.height);
+var ctx2 = offscreenCanvas2.getContext('2d');
+var promise = new Promise(function(resolve, reject) {
+    var xhr = new XMLHttpRequest();
+    xhr.open("GET", '/images/yellow75.png');
+    xhr.responseType = 'blob';
+    xhr.send();
+    xhr.onload = function() {
+        resolve(xhr.response);
+    };
+});
+promise.then(function(response) {
+    createImageBitmap(response).then(bitmap => {
+        ctx2.drawImage(bitmap, 0, 0);
+        ctx.fillStyle = 'rgba(0, 255, 255, 0.5)';
+        ctx.fillRect(0, 0, 100, 50);
+        ctx.globalCompositeOperation = 'destination-out';
+        ctx.drawImage(offscreenCanvas2, 0, 0);
+        _assertPixelApprox(canvas, 50,25, 0,255,255,32, 5);
+    }, t_fail);
+}).then(t_pass, t_fail);
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.canvas.destination-over.html b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.canvas.destination-over.html
new file mode 100644
index 0000000000..d18f9dc864
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.canvas.destination-over.html
@@ -0,0 +1,47 @@
+
+
+OffscreenCanvas test: 2d.composite.canvas.destination-over
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.composite.canvas.destination-over
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.canvas.destination-over.worker.js b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.canvas.destination-over.worker.js
new file mode 100644
index 0000000000..967e47b34d
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.canvas.destination-over.worker.js
@@ -0,0 +1,43 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.composite.canvas.destination-over
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+
+var offscreenCanvas2 = new OffscreenCanvas(canvas.width, canvas.height);
+var ctx2 = offscreenCanvas2.getContext('2d');
+var promise = new Promise(function(resolve, reject) {
+    var xhr = new XMLHttpRequest();
+    xhr.open("GET", '/images/yellow75.png');
+    xhr.responseType = 'blob';
+    xhr.send();
+    xhr.onload = function() {
+        resolve(xhr.response);
+    };
+});
+promise.then(function(response) {
+    createImageBitmap(response).then(bitmap => {
+        ctx2.drawImage(bitmap, 0, 0);
+        ctx.fillStyle = 'rgba(0, 255, 255, 0.5)';
+        ctx.fillRect(0, 0, 100, 50);
+        ctx.globalCompositeOperation = 'destination-over';
+        ctx.drawImage(offscreenCanvas2, 0, 0);
+        _assertPixelApprox(canvas, 50,25, 109,255,146,223, 5);
+    }, t_fail);
+}).then(t_pass, t_fail);
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.canvas.lighter.html b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.canvas.lighter.html
new file mode 100644
index 0000000000..9de44add68
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.canvas.lighter.html
@@ -0,0 +1,47 @@
+
+
+OffscreenCanvas test: 2d.composite.canvas.lighter
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.composite.canvas.lighter
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.canvas.lighter.worker.js b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.canvas.lighter.worker.js
new file mode 100644
index 0000000000..849d4a6a6f
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.canvas.lighter.worker.js
@@ -0,0 +1,43 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.composite.canvas.lighter
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+
+var offscreenCanvas2 = new OffscreenCanvas(canvas.width, canvas.height);
+var ctx2 = offscreenCanvas2.getContext('2d');
+var promise = new Promise(function(resolve, reject) {
+    var xhr = new XMLHttpRequest();
+    xhr.open("GET", '/images/yellow75.png');
+    xhr.responseType = 'blob';
+    xhr.send();
+    xhr.onload = function() {
+        resolve(xhr.response);
+    };
+});
+promise.then(function(response) {
+    createImageBitmap(response).then(bitmap => {
+        ctx2.drawImage(bitmap, 0, 0);
+        ctx.fillStyle = 'rgba(0, 255, 255, 0.5)';
+        ctx.fillRect(0, 0, 100, 50);
+        ctx.globalCompositeOperation = 'lighter';
+        ctx.drawImage(offscreenCanvas2, 0, 0);
+        _assertPixelApprox(canvas, 50,25, 191,255,128,255, 5);
+    }, t_fail);
+}).then(t_pass, t_fail);
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.canvas.source-atop.html b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.canvas.source-atop.html
new file mode 100644
index 0000000000..cf9d5cfcbe
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.canvas.source-atop.html
@@ -0,0 +1,47 @@
+
+
+OffscreenCanvas test: 2d.composite.canvas.source-atop
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.composite.canvas.source-atop
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.canvas.source-atop.worker.js b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.canvas.source-atop.worker.js
new file mode 100644
index 0000000000..7601db1f5a
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.canvas.source-atop.worker.js
@@ -0,0 +1,43 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.composite.canvas.source-atop
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+
+var offscreenCanvas2 = new OffscreenCanvas(canvas.width, canvas.height);
+var ctx2 = offscreenCanvas2.getContext('2d');
+var promise = new Promise(function(resolve, reject) {
+    var xhr = new XMLHttpRequest();
+    xhr.open("GET", '/images/yellow75.png');
+    xhr.responseType = 'blob';
+    xhr.send();
+    xhr.onload = function() {
+        resolve(xhr.response);
+    };
+});
+promise.then(function(response) {
+    createImageBitmap(response).then(bitmap => {
+        ctx2.drawImage(bitmap, 0, 0);
+        ctx.fillStyle = 'rgba(0, 255, 255, 0.5)';
+        ctx.fillRect(0, 0, 100, 50);
+        ctx.globalCompositeOperation = 'source-atop';
+        ctx.drawImage(offscreenCanvas2, 0, 0);
+        _assertPixelApprox(canvas, 50,25, 191,255,64,128, 5);
+    }, t_fail);
+}).then(t_pass, t_fail);
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.canvas.source-in.html b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.canvas.source-in.html
new file mode 100644
index 0000000000..30864d65a3
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.canvas.source-in.html
@@ -0,0 +1,47 @@
+
+
+OffscreenCanvas test: 2d.composite.canvas.source-in
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.composite.canvas.source-in
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.canvas.source-in.worker.js b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.canvas.source-in.worker.js
new file mode 100644
index 0000000000..5b21b35564
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.canvas.source-in.worker.js
@@ -0,0 +1,43 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.composite.canvas.source-in
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+
+var offscreenCanvas2 = new OffscreenCanvas(canvas.width, canvas.height);
+var ctx2 = offscreenCanvas2.getContext('2d');
+var promise = new Promise(function(resolve, reject) {
+    var xhr = new XMLHttpRequest();
+    xhr.open("GET", '/images/yellow75.png');
+    xhr.responseType = 'blob';
+    xhr.send();
+    xhr.onload = function() {
+        resolve(xhr.response);
+    };
+});
+promise.then(function(response) {
+    createImageBitmap(response).then(bitmap => {
+        ctx2.drawImage(bitmap, 0, 0);
+        ctx.fillStyle = 'rgba(0, 255, 255, 0.5)';
+        ctx.fillRect(0, 0, 100, 50);
+        ctx.globalCompositeOperation = 'source-in';
+        ctx.drawImage(offscreenCanvas2, 0, 0);
+        _assertPixelApprox(canvas, 50,25, 255,255,0,96, 5);
+    }, t_fail);
+}).then(t_pass, t_fail);
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.canvas.source-out.html b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.canvas.source-out.html
new file mode 100644
index 0000000000..d698540260
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.canvas.source-out.html
@@ -0,0 +1,47 @@
+
+
+OffscreenCanvas test: 2d.composite.canvas.source-out
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.composite.canvas.source-out
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.canvas.source-out.worker.js b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.canvas.source-out.worker.js
new file mode 100644
index 0000000000..cf5b0a9ac4
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.canvas.source-out.worker.js
@@ -0,0 +1,43 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.composite.canvas.source-out
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+
+var offscreenCanvas2 = new OffscreenCanvas(canvas.width, canvas.height);
+var ctx2 = offscreenCanvas2.getContext('2d');
+var promise = new Promise(function(resolve, reject) {
+    var xhr = new XMLHttpRequest();
+    xhr.open("GET", '/images/yellow75.png');
+    xhr.responseType = 'blob';
+    xhr.send();
+    xhr.onload = function() {
+        resolve(xhr.response);
+    };
+});
+promise.then(function(response) {
+    createImageBitmap(response).then(bitmap => {
+        ctx2.drawImage(bitmap, 0, 0);
+        ctx.fillStyle = 'rgba(0, 255, 255, 0.5)';
+        ctx.fillRect(0, 0, 100, 50);
+        ctx.globalCompositeOperation = 'source-out';
+        ctx.drawImage(offscreenCanvas2, 0, 0);
+        _assertPixelApprox(canvas, 50,25, 255,255,0,96, 5);
+    }, t_fail);
+}).then(t_pass, t_fail);
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.canvas.source-over.html b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.canvas.source-over.html
new file mode 100644
index 0000000000..e1e86c7979
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.canvas.source-over.html
@@ -0,0 +1,47 @@
+
+
+OffscreenCanvas test: 2d.composite.canvas.source-over
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.composite.canvas.source-over
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.canvas.source-over.worker.js b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.canvas.source-over.worker.js
new file mode 100644
index 0000000000..d61ebd1e56
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.canvas.source-over.worker.js
@@ -0,0 +1,43 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.composite.canvas.source-over
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+
+var offscreenCanvas2 = new OffscreenCanvas(canvas.width, canvas.height);
+var ctx2 = offscreenCanvas2.getContext('2d');
+var promise = new Promise(function(resolve, reject) {
+    var xhr = new XMLHttpRequest();
+    xhr.open("GET", '/images/yellow75.png');
+    xhr.responseType = 'blob';
+    xhr.send();
+    xhr.onload = function() {
+        resolve(xhr.response);
+    };
+});
+promise.then(function(response) {
+    createImageBitmap(response).then(bitmap => {
+        ctx2.drawImage(bitmap, 0, 0);
+        ctx.fillStyle = 'rgba(0, 255, 255, 0.5)';
+        ctx.fillRect(0, 0, 100, 50);
+        ctx.globalCompositeOperation = 'source-over';
+        ctx.drawImage(offscreenCanvas2, 0, 0);
+        _assertPixelApprox(canvas, 50,25, 219,255,36,223, 5);
+    }, t_fail);
+}).then(t_pass, t_fail);
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.canvas.xor.html b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.canvas.xor.html
new file mode 100644
index 0000000000..c2d1f52645
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.canvas.xor.html
@@ -0,0 +1,47 @@
+
+
+OffscreenCanvas test: 2d.composite.canvas.xor
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.composite.canvas.xor
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.canvas.xor.worker.js b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.canvas.xor.worker.js
new file mode 100644
index 0000000000..1b2286a87a
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.canvas.xor.worker.js
@@ -0,0 +1,43 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.composite.canvas.xor
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+
+var offscreenCanvas2 = new OffscreenCanvas(canvas.width, canvas.height);
+var ctx2 = offscreenCanvas2.getContext('2d');
+var promise = new Promise(function(resolve, reject) {
+    var xhr = new XMLHttpRequest();
+    xhr.open("GET", '/images/yellow75.png');
+    xhr.responseType = 'blob';
+    xhr.send();
+    xhr.onload = function() {
+        resolve(xhr.response);
+    };
+});
+promise.then(function(response) {
+    createImageBitmap(response).then(bitmap => {
+        ctx2.drawImage(bitmap, 0, 0);
+        ctx.fillStyle = 'rgba(0, 255, 255, 0.5)';
+        ctx.fillRect(0, 0, 100, 50);
+        ctx.globalCompositeOperation = 'xor';
+        ctx.drawImage(offscreenCanvas2, 0, 0);
+        _assertPixelApprox(canvas, 50,25, 191,255,64,128, 5);
+    }, t_fail);
+}).then(t_pass, t_fail);
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.clip.clear.html b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.clip.clear.html
new file mode 100644
index 0000000000..842bcf19c5
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.clip.clear.html
@@ -0,0 +1,36 @@
+
+
+OffscreenCanvas test: 2d.composite.clip.clear
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.composite.clip.clear
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              fill() does not affect pixels outside the clip region.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.clip.clear.worker.js b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.clip.clear.worker.js
new file mode 100644
index 0000000000..7365ecc3a7
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.clip.clear.worker.js
@@ -0,0 +1,32 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.composite.clip.clear
+// Description:fill() does not affect pixels outside the clip region.
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("fill() does not affect pixels outside the clip region.");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+
+ctx.fillStyle = '#0f0';
+ctx.fillRect(0, 0, 100, 50);
+ctx.globalCompositeOperation = 'clear';
+ctx.rect(-20, -20, 10, 10);
+ctx.clip();
+ctx.fillStyle = '#f00';
+ctx.fillRect(0, 0, 50, 50);
+_assertPixel(canvas, 25,25, 0,255,0,255);
+_assertPixel(canvas, 75,25, 0,255,0,255);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.clip.copy.html b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.clip.copy.html
new file mode 100644
index 0000000000..5d6afc11cf
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.clip.copy.html
@@ -0,0 +1,36 @@
+
+
+OffscreenCanvas test: 2d.composite.clip.copy
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.composite.clip.copy
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              fill() does not affect pixels outside the clip region.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.clip.copy.worker.js b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.clip.copy.worker.js
new file mode 100644
index 0000000000..3158893fc5
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.clip.copy.worker.js
@@ -0,0 +1,32 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.composite.clip.copy
+// Description:fill() does not affect pixels outside the clip region.
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("fill() does not affect pixels outside the clip region.");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+
+ctx.fillStyle = '#0f0';
+ctx.fillRect(0, 0, 100, 50);
+ctx.globalCompositeOperation = 'copy';
+ctx.rect(-20, -20, 10, 10);
+ctx.clip();
+ctx.fillStyle = '#f00';
+ctx.fillRect(0, 0, 50, 50);
+_assertPixel(canvas, 25,25, 0,255,0,255);
+_assertPixel(canvas, 75,25, 0,255,0,255);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.clip.destination-atop.html b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.clip.destination-atop.html
new file mode 100644
index 0000000000..93d4d70adb
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.clip.destination-atop.html
@@ -0,0 +1,36 @@
+
+
+OffscreenCanvas test: 2d.composite.clip.destination-atop
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.composite.clip.destination-atop
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              fill() does not affect pixels outside the clip region.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.clip.destination-atop.worker.js b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.clip.destination-atop.worker.js
new file mode 100644
index 0000000000..78b5368194
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.clip.destination-atop.worker.js
@@ -0,0 +1,32 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.composite.clip.destination-atop
+// Description:fill() does not affect pixels outside the clip region.
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("fill() does not affect pixels outside the clip region.");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+
+ctx.fillStyle = '#0f0';
+ctx.fillRect(0, 0, 100, 50);
+ctx.globalCompositeOperation = 'destination-atop';
+ctx.rect(-20, -20, 10, 10);
+ctx.clip();
+ctx.fillStyle = '#f00';
+ctx.fillRect(0, 0, 50, 50);
+_assertPixel(canvas, 25,25, 0,255,0,255);
+_assertPixel(canvas, 75,25, 0,255,0,255);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.clip.destination-in.html b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.clip.destination-in.html
new file mode 100644
index 0000000000..d2520378e4
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.clip.destination-in.html
@@ -0,0 +1,36 @@
+
+
+OffscreenCanvas test: 2d.composite.clip.destination-in
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.composite.clip.destination-in
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              fill() does not affect pixels outside the clip region.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.clip.destination-in.worker.js b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.clip.destination-in.worker.js
new file mode 100644
index 0000000000..bc12026103
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.clip.destination-in.worker.js
@@ -0,0 +1,32 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.composite.clip.destination-in
+// Description:fill() does not affect pixels outside the clip region.
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("fill() does not affect pixels outside the clip region.");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+
+ctx.fillStyle = '#0f0';
+ctx.fillRect(0, 0, 100, 50);
+ctx.globalCompositeOperation = 'destination-in';
+ctx.rect(-20, -20, 10, 10);
+ctx.clip();
+ctx.fillStyle = '#f00';
+ctx.fillRect(0, 0, 50, 50);
+_assertPixel(canvas, 25,25, 0,255,0,255);
+_assertPixel(canvas, 75,25, 0,255,0,255);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.clip.destination-out.html b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.clip.destination-out.html
new file mode 100644
index 0000000000..fdb1792b53
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.clip.destination-out.html
@@ -0,0 +1,36 @@
+
+
+OffscreenCanvas test: 2d.composite.clip.destination-out
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.composite.clip.destination-out
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              fill() does not affect pixels outside the clip region.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.clip.destination-out.worker.js b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.clip.destination-out.worker.js
new file mode 100644
index 0000000000..ebe3a70d03
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.clip.destination-out.worker.js
@@ -0,0 +1,32 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.composite.clip.destination-out
+// Description:fill() does not affect pixels outside the clip region.
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("fill() does not affect pixels outside the clip region.");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+
+ctx.fillStyle = '#0f0';
+ctx.fillRect(0, 0, 100, 50);
+ctx.globalCompositeOperation = 'destination-out';
+ctx.rect(-20, -20, 10, 10);
+ctx.clip();
+ctx.fillStyle = '#f00';
+ctx.fillRect(0, 0, 50, 50);
+_assertPixel(canvas, 25,25, 0,255,0,255);
+_assertPixel(canvas, 75,25, 0,255,0,255);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.clip.destination-over.html b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.clip.destination-over.html
new file mode 100644
index 0000000000..ae4cb499bc
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.clip.destination-over.html
@@ -0,0 +1,36 @@
+
+
+OffscreenCanvas test: 2d.composite.clip.destination-over
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.composite.clip.destination-over
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              fill() does not affect pixels outside the clip region.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.clip.destination-over.worker.js b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.clip.destination-over.worker.js
new file mode 100644
index 0000000000..fb8778f0e1
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.clip.destination-over.worker.js
@@ -0,0 +1,32 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.composite.clip.destination-over
+// Description:fill() does not affect pixels outside the clip region.
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("fill() does not affect pixels outside the clip region.");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+
+ctx.fillStyle = '#0f0';
+ctx.fillRect(0, 0, 100, 50);
+ctx.globalCompositeOperation = 'destination-over';
+ctx.rect(-20, -20, 10, 10);
+ctx.clip();
+ctx.fillStyle = '#f00';
+ctx.fillRect(0, 0, 50, 50);
+_assertPixel(canvas, 25,25, 0,255,0,255);
+_assertPixel(canvas, 75,25, 0,255,0,255);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.clip.lighter.html b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.clip.lighter.html
new file mode 100644
index 0000000000..1f705f2645
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.clip.lighter.html
@@ -0,0 +1,36 @@
+
+
+OffscreenCanvas test: 2d.composite.clip.lighter
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.composite.clip.lighter
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              fill() does not affect pixels outside the clip region.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.clip.lighter.worker.js b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.clip.lighter.worker.js
new file mode 100644
index 0000000000..f6bf4c4aff
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.clip.lighter.worker.js
@@ -0,0 +1,32 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.composite.clip.lighter
+// Description:fill() does not affect pixels outside the clip region.
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("fill() does not affect pixels outside the clip region.");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+
+ctx.fillStyle = '#0f0';
+ctx.fillRect(0, 0, 100, 50);
+ctx.globalCompositeOperation = 'lighter';
+ctx.rect(-20, -20, 10, 10);
+ctx.clip();
+ctx.fillStyle = '#f00';
+ctx.fillRect(0, 0, 50, 50);
+_assertPixel(canvas, 25,25, 0,255,0,255);
+_assertPixel(canvas, 75,25, 0,255,0,255);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.clip.source-atop.html b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.clip.source-atop.html
new file mode 100644
index 0000000000..eb5474702c
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.clip.source-atop.html
@@ -0,0 +1,36 @@
+
+
+OffscreenCanvas test: 2d.composite.clip.source-atop
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.composite.clip.source-atop
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              fill() does not affect pixels outside the clip region.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.clip.source-atop.worker.js b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.clip.source-atop.worker.js
new file mode 100644
index 0000000000..fec34e1bc6
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.clip.source-atop.worker.js
@@ -0,0 +1,32 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.composite.clip.source-atop
+// Description:fill() does not affect pixels outside the clip region.
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("fill() does not affect pixels outside the clip region.");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+
+ctx.fillStyle = '#0f0';
+ctx.fillRect(0, 0, 100, 50);
+ctx.globalCompositeOperation = 'source-atop';
+ctx.rect(-20, -20, 10, 10);
+ctx.clip();
+ctx.fillStyle = '#f00';
+ctx.fillRect(0, 0, 50, 50);
+_assertPixel(canvas, 25,25, 0,255,0,255);
+_assertPixel(canvas, 75,25, 0,255,0,255);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.clip.source-in.html b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.clip.source-in.html
new file mode 100644
index 0000000000..cdc814fa75
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.clip.source-in.html
@@ -0,0 +1,36 @@
+
+
+OffscreenCanvas test: 2d.composite.clip.source-in
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.composite.clip.source-in
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              fill() does not affect pixels outside the clip region.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.clip.source-in.worker.js b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.clip.source-in.worker.js
new file mode 100644
index 0000000000..b9a67cef2e
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.clip.source-in.worker.js
@@ -0,0 +1,32 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.composite.clip.source-in
+// Description:fill() does not affect pixels outside the clip region.
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("fill() does not affect pixels outside the clip region.");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+
+ctx.fillStyle = '#0f0';
+ctx.fillRect(0, 0, 100, 50);
+ctx.globalCompositeOperation = 'source-in';
+ctx.rect(-20, -20, 10, 10);
+ctx.clip();
+ctx.fillStyle = '#f00';
+ctx.fillRect(0, 0, 50, 50);
+_assertPixel(canvas, 25,25, 0,255,0,255);
+_assertPixel(canvas, 75,25, 0,255,0,255);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.clip.source-out.html b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.clip.source-out.html
new file mode 100644
index 0000000000..9df047f77f
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.clip.source-out.html
@@ -0,0 +1,36 @@
+
+
+OffscreenCanvas test: 2d.composite.clip.source-out
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.composite.clip.source-out
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              fill() does not affect pixels outside the clip region.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.clip.source-out.worker.js b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.clip.source-out.worker.js
new file mode 100644
index 0000000000..9d2524064a
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.clip.source-out.worker.js
@@ -0,0 +1,32 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.composite.clip.source-out
+// Description:fill() does not affect pixels outside the clip region.
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("fill() does not affect pixels outside the clip region.");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+
+ctx.fillStyle = '#0f0';
+ctx.fillRect(0, 0, 100, 50);
+ctx.globalCompositeOperation = 'source-out';
+ctx.rect(-20, -20, 10, 10);
+ctx.clip();
+ctx.fillStyle = '#f00';
+ctx.fillRect(0, 0, 50, 50);
+_assertPixel(canvas, 25,25, 0,255,0,255);
+_assertPixel(canvas, 75,25, 0,255,0,255);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.clip.source-over.html b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.clip.source-over.html
new file mode 100644
index 0000000000..522f4f996b
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.clip.source-over.html
@@ -0,0 +1,36 @@
+
+
+OffscreenCanvas test: 2d.composite.clip.source-over
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.composite.clip.source-over
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              fill() does not affect pixels outside the clip region.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.clip.source-over.worker.js b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.clip.source-over.worker.js
new file mode 100644
index 0000000000..6d401c46b0
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.clip.source-over.worker.js
@@ -0,0 +1,32 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.composite.clip.source-over
+// Description:fill() does not affect pixels outside the clip region.
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("fill() does not affect pixels outside the clip region.");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+
+ctx.fillStyle = '#0f0';
+ctx.fillRect(0, 0, 100, 50);
+ctx.globalCompositeOperation = 'source-over';
+ctx.rect(-20, -20, 10, 10);
+ctx.clip();
+ctx.fillStyle = '#f00';
+ctx.fillRect(0, 0, 50, 50);
+_assertPixel(canvas, 25,25, 0,255,0,255);
+_assertPixel(canvas, 75,25, 0,255,0,255);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.clip.xor.html b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.clip.xor.html
new file mode 100644
index 0000000000..dc1170db37
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.clip.xor.html
@@ -0,0 +1,36 @@
+
+
+OffscreenCanvas test: 2d.composite.clip.xor
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.composite.clip.xor
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              fill() does not affect pixels outside the clip region.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.clip.xor.worker.js b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.clip.xor.worker.js
new file mode 100644
index 0000000000..1d89becc27
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.clip.xor.worker.js
@@ -0,0 +1,32 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.composite.clip.xor
+// Description:fill() does not affect pixels outside the clip region.
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("fill() does not affect pixels outside the clip region.");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+
+ctx.fillStyle = '#0f0';
+ctx.fillRect(0, 0, 100, 50);
+ctx.globalCompositeOperation = 'xor';
+ctx.rect(-20, -20, 10, 10);
+ctx.clip();
+ctx.fillStyle = '#f00';
+ctx.fillRect(0, 0, 50, 50);
+_assertPixel(canvas, 25,25, 0,255,0,255);
+_assertPixel(canvas, 75,25, 0,255,0,255);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.globalAlpha.canvas.html b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.globalAlpha.canvas.html
new file mode 100644
index 0000000000..c096253e27
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.globalAlpha.canvas.html
@@ -0,0 +1,36 @@
+
+
+OffscreenCanvas test: 2d.composite.globalAlpha.canvas
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.composite.globalAlpha.canvas
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.globalAlpha.canvas.worker.js b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.globalAlpha.canvas.worker.js
new file mode 100644
index 0000000000..ede4733a83
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.globalAlpha.canvas.worker.js
@@ -0,0 +1,31 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.composite.globalAlpha.canvas
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  var offscreenCanvas2 = new OffscreenCanvas(100, 50);
+  var ctx2 = offscreenCanvas2.getContext('2d');
+  ctx2.fillStyle = '#f00';
+  ctx2.fillRect(0, 0, 100, 50);
+  ctx.fillStyle = '#0f0';
+  ctx.fillRect(0, 0, 100, 50);
+  // Avoiding any potential alpha = 0 optimisations.
+  ctx.globalAlpha = 0.01;
+  ctx.drawImage(offscreenCanvas2, 0, 0);
+  _assertPixelApprox(canvas, 50,25, 2,253,0,255, 2);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.globalAlpha.canvascopy.html b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.globalAlpha.canvascopy.html
new file mode 100644
index 0000000000..2eb06556ef
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.globalAlpha.canvascopy.html
@@ -0,0 +1,36 @@
+
+
+OffscreenCanvas test: 2d.composite.globalAlpha.canvascopy
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.composite.globalAlpha.canvascopy
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.globalAlpha.canvascopy.worker.js b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.globalAlpha.canvascopy.worker.js
new file mode 100644
index 0000000000..f61859d231
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.globalAlpha.canvascopy.worker.js
@@ -0,0 +1,31 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.composite.globalAlpha.canvascopy
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  var offscreenCanvas2 = new OffscreenCanvas(100, 50);
+  var ctx2 = offscreenCanvas2.getContext('2d');
+  ctx2.fillStyle = '#0f0';
+  ctx2.fillRect(0, 0, 100, 50);
+  ctx.fillStyle = '#f00';
+  ctx.fillRect(0, 0, 100, 50);
+  ctx.globalCompositeOperation = 'copy'
+  ctx.globalAlpha = 0.51;
+  ctx.drawImage(offscreenCanvas2, 0, 0);
+  _assertPixelApprox(canvas, 50,25, 0,255,0,130, 2);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.globalAlpha.canvaspattern.html b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.globalAlpha.canvaspattern.html
new file mode 100644
index 0000000000..cbfe111092
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.globalAlpha.canvaspattern.html
@@ -0,0 +1,37 @@
+
+
+OffscreenCanvas test: 2d.composite.globalAlpha.canvaspattern
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.composite.globalAlpha.canvaspattern
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.globalAlpha.canvaspattern.worker.js b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.globalAlpha.canvaspattern.worker.js
new file mode 100644
index 0000000000..7ecd568fae
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.globalAlpha.canvaspattern.worker.js
@@ -0,0 +1,32 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.composite.globalAlpha.canvaspattern
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  var offscreenCanvas2 = new OffscreenCanvas(100, 50);
+  var ctx2 = offscreenCanvas2.getContext('2d');
+  ctx2.fillStyle = '#f00';
+  ctx2.fillRect(0, 0, 100, 50);
+  ctx.fillStyle = '#0f0';
+  ctx.fillRect(0, 0, 100, 50);
+  ctx.fillStyle = ctx.createPattern(offscreenCanvas2, 'no-repeat');
+  // Avoiding any potential alpha = 0 optimisations.
+  ctx.globalAlpha = 0.01;
+  ctx.fillRect(0, 0, 100, 50);
+  _assertPixelApprox(canvas, 50,25, 2,253,0,255, 2);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.globalAlpha.default.html b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.globalAlpha.default.html
new file mode 100644
index 0000000000..57c3745d4e
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.globalAlpha.default.html
@@ -0,0 +1,27 @@
+
+
+OffscreenCanvas test: 2d.composite.globalAlpha.default
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.composite.globalAlpha.default
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.globalAlpha.default.worker.js b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.globalAlpha.default.worker.js
new file mode 100644
index 0000000000..8acbd6a37f
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.globalAlpha.default.worker.js
@@ -0,0 +1,22 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.composite.globalAlpha.default
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  _assertSame(ctx.globalAlpha, 1.0, "ctx.globalAlpha", "1.0");
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.globalAlpha.fill.html b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.globalAlpha.fill.html
new file mode 100644
index 0000000000..7b31db198e
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.globalAlpha.fill.html
@@ -0,0 +1,33 @@
+
+
+OffscreenCanvas test: 2d.composite.globalAlpha.fill
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.composite.globalAlpha.fill
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.globalAlpha.fill.worker.js b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.globalAlpha.fill.worker.js
new file mode 100644
index 0000000000..3ea8aa7ebe
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.globalAlpha.fill.worker.js
@@ -0,0 +1,28 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.composite.globalAlpha.fill
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#0f0';
+  ctx.fillRect(0, 0, 100, 50);
+  // Avoiding any potential alpha = 0 optimisations.
+  ctx.globalAlpha = 0.01;
+  ctx.fillStyle = '#f00';
+  ctx.fillRect(0, 0, 100, 50);
+  _assertPixelApprox(canvas, 50,25, 2,253,0,255, 2);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.globalAlpha.image.html b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.globalAlpha.image.html
new file mode 100644
index 0000000000..4590a2ea1f
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.globalAlpha.image.html
@@ -0,0 +1,30 @@
+
+
+OffscreenCanvas test: 2d.composite.globalAlpha.image
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.composite.globalAlpha.image
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.globalAlpha.image.worker.js b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.globalAlpha.image.worker.js
new file mode 100644
index 0000000000..20953417cc
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.globalAlpha.image.worker.js
@@ -0,0 +1,26 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.composite.globalAlpha.image
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+promise_test(async t => {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#0f0';
+  ctx.fillRect(0, 0, 100, 50);
+  // Avoiding any potential alpha = 0 optimisations.
+  ctx.globalAlpha = 0.01;
+  const response = await fetch('/images/red.png');
+  const blob = await response.blob();
+  const bitmap = await createImageBitmap(blob);
+
+  ctx.drawImage(bitmap, 0, 0);
+  _assertPixelApprox(canvas, 50,25, 2,253,0,255, 2);
+  t.done();
+}, "");
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.globalAlpha.imagepattern.html b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.globalAlpha.imagepattern.html
new file mode 100644
index 0000000000..2fcbca84d2
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.globalAlpha.imagepattern.html
@@ -0,0 +1,31 @@
+
+
+OffscreenCanvas test: 2d.composite.globalAlpha.imagepattern
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.composite.globalAlpha.imagepattern
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.globalAlpha.imagepattern.worker.js b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.globalAlpha.imagepattern.worker.js
new file mode 100644
index 0000000000..c6ab163b65
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.globalAlpha.imagepattern.worker.js
@@ -0,0 +1,27 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.composite.globalAlpha.imagepattern
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+promise_test(async t => {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#0f0';
+  ctx.fillRect(0, 0, 100, 50);
+  const response = await fetch('/images/red.png');
+  const blob = await response.blob();
+  const bitmap = await createImageBitmap(blob);
+
+  ctx.fillStyle = ctx.createPattern(bitmap, 'no-repeat');
+  // Avoiding any potential alpha = 0 optimisations.
+  ctx.globalAlpha = 0.01;
+  ctx.fillRect(0, 0, 100, 50);
+  _assertPixelApprox(canvas, 50,25, 2,253,0,255, 2);
+  t.done();
+}, "");
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.globalAlpha.invalid.html b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.globalAlpha.invalid.html
new file mode 100644
index 0000000000..9bcf85f1c4
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.globalAlpha.invalid.html
@@ -0,0 +1,36 @@
+
+
+OffscreenCanvas test: 2d.composite.globalAlpha.invalid
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.composite.globalAlpha.invalid
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.globalAlpha.invalid.worker.js b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.globalAlpha.invalid.worker.js
new file mode 100644
index 0000000000..4ca577ad44
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.globalAlpha.invalid.worker.js
@@ -0,0 +1,31 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.composite.globalAlpha.invalid
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.globalAlpha = 0.5;
+  // This may not set it to exactly 0.5 if it is rounded/quantised, so
+  // remember for future comparisons.
+  var a = ctx.globalAlpha;
+  ctx.globalAlpha = Infinity;
+  _assertSame(ctx.globalAlpha, a, "ctx.globalAlpha", "a");
+  ctx.globalAlpha = -Infinity;
+  _assertSame(ctx.globalAlpha, a, "ctx.globalAlpha", "a");
+  ctx.globalAlpha = NaN;
+  _assertSame(ctx.globalAlpha, a, "ctx.globalAlpha", "a");
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.globalAlpha.range.html b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.globalAlpha.range.html
new file mode 100644
index 0000000000..c064a41cbd
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.globalAlpha.range.html
@@ -0,0 +1,39 @@
+
+
+OffscreenCanvas test: 2d.composite.globalAlpha.range
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.composite.globalAlpha.range
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.globalAlpha.range.worker.js b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.globalAlpha.range.worker.js
new file mode 100644
index 0000000000..76ea819909
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.globalAlpha.range.worker.js
@@ -0,0 +1,34 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.composite.globalAlpha.range
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.globalAlpha = 0.5;
+  // This may not set it to exactly 0.5 if it is rounded/quantised, so
+  // remember for future comparisons.
+  var a = ctx.globalAlpha;
+  _assertSame(ctx.globalAlpha, a, "ctx.globalAlpha", "a");
+  ctx.globalAlpha = 1.1;
+  _assertSame(ctx.globalAlpha, a, "ctx.globalAlpha", "a");
+  ctx.globalAlpha = -0.1;
+  _assertSame(ctx.globalAlpha, a, "ctx.globalAlpha", "a");
+  ctx.globalAlpha = 0;
+  _assertSame(ctx.globalAlpha, 0, "ctx.globalAlpha", "0");
+  ctx.globalAlpha = 1;
+  _assertSame(ctx.globalAlpha, 1, "ctx.globalAlpha", "1");
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.image.clear.html b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.image.clear.html
new file mode 100644
index 0000000000..5858e8f4b5
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.image.clear.html
@@ -0,0 +1,44 @@
+
+
+OffscreenCanvas test: 2d.composite.image.clear
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.composite.image.clear
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.image.clear.worker.js b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.image.clear.worker.js
new file mode 100644
index 0000000000..137654742c
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.image.clear.worker.js
@@ -0,0 +1,40 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.composite.image.clear
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+
+ctx.fillStyle = 'rgba(0, 255, 255, 0.5)';
+ctx.fillRect(0, 0, 100, 50);
+ctx.globalCompositeOperation = 'clear';
+var promise = new Promise(function(resolve, reject) {
+    var xhr = new XMLHttpRequest();
+    xhr.open("GET", '/images/yellow75.png');
+    xhr.responseType = 'blob';
+    xhr.send();
+    xhr.onload = function() {
+        resolve(xhr.response);
+    };
+});
+promise.then(function(response) {
+    createImageBitmap(response).then(bitmap => {
+        ctx.drawImage(bitmap, 0, 0);
+        _assertPixelApprox(canvas, 50,25, 0,0,0,0, 5);
+    }, t_fail);
+}).then(t_pass, t_fail);
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.image.copy.html b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.image.copy.html
new file mode 100644
index 0000000000..1aa9c98e9d
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.image.copy.html
@@ -0,0 +1,44 @@
+
+
+OffscreenCanvas test: 2d.composite.image.copy
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.composite.image.copy
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.image.copy.worker.js b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.image.copy.worker.js
new file mode 100644
index 0000000000..ba3399a2b1
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.image.copy.worker.js
@@ -0,0 +1,40 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.composite.image.copy
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+
+ctx.fillStyle = 'rgba(0, 255, 255, 0.5)';
+ctx.fillRect(0, 0, 100, 50);
+ctx.globalCompositeOperation = 'copy';
+var promise = new Promise(function(resolve, reject) {
+    var xhr = new XMLHttpRequest();
+    xhr.open("GET", '/images/yellow75.png');
+    xhr.responseType = 'blob';
+    xhr.send();
+    xhr.onload = function() {
+        resolve(xhr.response);
+    };
+});
+promise.then(function(response) {
+    createImageBitmap(response).then(bitmap => {
+        ctx.drawImage(bitmap, 0, 0);
+        _assertPixelApprox(canvas, 50,25, 255,255,0,191, 5);
+    }, t_fail);
+}).then(t_pass, t_fail);
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.image.destination-atop.html b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.image.destination-atop.html
new file mode 100644
index 0000000000..76547a1f86
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.image.destination-atop.html
@@ -0,0 +1,44 @@
+
+
+OffscreenCanvas test: 2d.composite.image.destination-atop
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.composite.image.destination-atop
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.image.destination-atop.worker.js b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.image.destination-atop.worker.js
new file mode 100644
index 0000000000..677b882b01
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.image.destination-atop.worker.js
@@ -0,0 +1,40 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.composite.image.destination-atop
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+
+ctx.fillStyle = 'rgba(0, 255, 255, 0.5)';
+ctx.fillRect(0, 0, 100, 50);
+ctx.globalCompositeOperation = 'destination-atop';
+var promise = new Promise(function(resolve, reject) {
+    var xhr = new XMLHttpRequest();
+    xhr.open("GET", '/images/yellow75.png');
+    xhr.responseType = 'blob';
+    xhr.send();
+    xhr.onload = function() {
+        resolve(xhr.response);
+    };
+});
+promise.then(function(response) {
+    createImageBitmap(response).then(bitmap => {
+        ctx.drawImage(bitmap, 0, 0);
+        _assertPixelApprox(canvas, 50,25, 128,255,128,191, 5);
+    }, t_fail);
+}).then(t_pass, t_fail);
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.image.destination-in.html b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.image.destination-in.html
new file mode 100644
index 0000000000..8fa5786961
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.image.destination-in.html
@@ -0,0 +1,44 @@
+
+
+OffscreenCanvas test: 2d.composite.image.destination-in
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.composite.image.destination-in
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.image.destination-in.worker.js b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.image.destination-in.worker.js
new file mode 100644
index 0000000000..aa8c1ac06d
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.image.destination-in.worker.js
@@ -0,0 +1,40 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.composite.image.destination-in
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+
+ctx.fillStyle = 'rgba(0, 255, 255, 0.5)';
+ctx.fillRect(0, 0, 100, 50);
+ctx.globalCompositeOperation = 'destination-in';
+var promise = new Promise(function(resolve, reject) {
+    var xhr = new XMLHttpRequest();
+    xhr.open("GET", '/images/yellow75.png');
+    xhr.responseType = 'blob';
+    xhr.send();
+    xhr.onload = function() {
+        resolve(xhr.response);
+    };
+});
+promise.then(function(response) {
+    createImageBitmap(response).then(bitmap => {
+        ctx.drawImage(bitmap, 0, 0);
+        _assertPixelApprox(canvas, 50,25, 0,255,255,96, 5);
+    }, t_fail);
+}).then(t_pass, t_fail);
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.image.destination-out.html b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.image.destination-out.html
new file mode 100644
index 0000000000..3a4da68c2c
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.image.destination-out.html
@@ -0,0 +1,44 @@
+
+
+OffscreenCanvas test: 2d.composite.image.destination-out
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.composite.image.destination-out
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.image.destination-out.worker.js b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.image.destination-out.worker.js
new file mode 100644
index 0000000000..94ac27a00d
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.image.destination-out.worker.js
@@ -0,0 +1,40 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.composite.image.destination-out
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+
+ctx.fillStyle = 'rgba(0, 255, 255, 0.5)';
+ctx.fillRect(0, 0, 100, 50);
+ctx.globalCompositeOperation = 'destination-out';
+var promise = new Promise(function(resolve, reject) {
+    var xhr = new XMLHttpRequest();
+    xhr.open("GET", '/images/yellow75.png');
+    xhr.responseType = 'blob';
+    xhr.send();
+    xhr.onload = function() {
+        resolve(xhr.response);
+    };
+});
+promise.then(function(response) {
+    createImageBitmap(response).then(bitmap => {
+        ctx.drawImage(bitmap, 0, 0);
+        _assertPixelApprox(canvas, 50,25, 0,255,255,32, 5);
+    }, t_fail);
+}).then(t_pass, t_fail);
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.image.destination-over.html b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.image.destination-over.html
new file mode 100644
index 0000000000..c6da28db6a
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.image.destination-over.html
@@ -0,0 +1,44 @@
+
+
+OffscreenCanvas test: 2d.composite.image.destination-over
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.composite.image.destination-over
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.image.destination-over.worker.js b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.image.destination-over.worker.js
new file mode 100644
index 0000000000..3bc357dce8
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.image.destination-over.worker.js
@@ -0,0 +1,40 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.composite.image.destination-over
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+
+ctx.fillStyle = 'rgba(0, 255, 255, 0.5)';
+ctx.fillRect(0, 0, 100, 50);
+ctx.globalCompositeOperation = 'destination-over';
+var promise = new Promise(function(resolve, reject) {
+    var xhr = new XMLHttpRequest();
+    xhr.open("GET", '/images/yellow75.png');
+    xhr.responseType = 'blob';
+    xhr.send();
+    xhr.onload = function() {
+        resolve(xhr.response);
+    };
+});
+promise.then(function(response) {
+    createImageBitmap(response).then(bitmap => {
+        ctx.drawImage(bitmap, 0, 0);
+        _assertPixelApprox(canvas, 50,25, 109,255,146,223, 5);
+    }, t_fail);
+}).then(t_pass, t_fail);
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.image.lighter.html b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.image.lighter.html
new file mode 100644
index 0000000000..db89e5a3e8
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.image.lighter.html
@@ -0,0 +1,44 @@
+
+
+OffscreenCanvas test: 2d.composite.image.lighter
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.composite.image.lighter
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.image.lighter.worker.js b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.image.lighter.worker.js
new file mode 100644
index 0000000000..922b5f4635
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.image.lighter.worker.js
@@ -0,0 +1,40 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.composite.image.lighter
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+
+ctx.fillStyle = 'rgba(0, 255, 255, 0.5)';
+ctx.fillRect(0, 0, 100, 50);
+ctx.globalCompositeOperation = 'lighter';
+var promise = new Promise(function(resolve, reject) {
+    var xhr = new XMLHttpRequest();
+    xhr.open("GET", '/images/yellow75.png');
+    xhr.responseType = 'blob';
+    xhr.send();
+    xhr.onload = function() {
+        resolve(xhr.response);
+    };
+});
+promise.then(function(response) {
+    createImageBitmap(response).then(bitmap => {
+        ctx.drawImage(bitmap, 0, 0);
+        _assertPixelApprox(canvas, 50,25, 191,255,128,255, 5);
+    }, t_fail);
+}).then(t_pass, t_fail);
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.image.source-atop.html b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.image.source-atop.html
new file mode 100644
index 0000000000..44dd6f4274
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.image.source-atop.html
@@ -0,0 +1,44 @@
+
+
+OffscreenCanvas test: 2d.composite.image.source-atop
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.composite.image.source-atop
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.image.source-atop.worker.js b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.image.source-atop.worker.js
new file mode 100644
index 0000000000..1b32993858
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.image.source-atop.worker.js
@@ -0,0 +1,40 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.composite.image.source-atop
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+
+ctx.fillStyle = 'rgba(0, 255, 255, 0.5)';
+ctx.fillRect(0, 0, 100, 50);
+ctx.globalCompositeOperation = 'source-atop';
+var promise = new Promise(function(resolve, reject) {
+    var xhr = new XMLHttpRequest();
+    xhr.open("GET", '/images/yellow75.png');
+    xhr.responseType = 'blob';
+    xhr.send();
+    xhr.onload = function() {
+        resolve(xhr.response);
+    };
+});
+promise.then(function(response) {
+    createImageBitmap(response).then(bitmap => {
+        ctx.drawImage(bitmap, 0, 0);
+        _assertPixelApprox(canvas, 50,25, 191,255,64,128, 5);
+    }, t_fail);
+}).then(t_pass, t_fail);
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.image.source-in.html b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.image.source-in.html
new file mode 100644
index 0000000000..64c28c0c21
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.image.source-in.html
@@ -0,0 +1,44 @@
+
+
+OffscreenCanvas test: 2d.composite.image.source-in
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.composite.image.source-in
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.image.source-in.worker.js b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.image.source-in.worker.js
new file mode 100644
index 0000000000..3048f849a9
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.image.source-in.worker.js
@@ -0,0 +1,40 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.composite.image.source-in
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+
+ctx.fillStyle = 'rgba(0, 255, 255, 0.5)';
+ctx.fillRect(0, 0, 100, 50);
+ctx.globalCompositeOperation = 'source-in';
+var promise = new Promise(function(resolve, reject) {
+    var xhr = new XMLHttpRequest();
+    xhr.open("GET", '/images/yellow75.png');
+    xhr.responseType = 'blob';
+    xhr.send();
+    xhr.onload = function() {
+        resolve(xhr.response);
+    };
+});
+promise.then(function(response) {
+    createImageBitmap(response).then(bitmap => {
+        ctx.drawImage(bitmap, 0, 0);
+        _assertPixelApprox(canvas, 50,25, 255,255,0,96, 5);
+    }, t_fail);
+}).then(t_pass, t_fail);
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.image.source-out.html b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.image.source-out.html
new file mode 100644
index 0000000000..46d3e483ee
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.image.source-out.html
@@ -0,0 +1,44 @@
+
+
+OffscreenCanvas test: 2d.composite.image.source-out
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.composite.image.source-out
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.image.source-out.worker.js b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.image.source-out.worker.js
new file mode 100644
index 0000000000..090bbe7d22
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.image.source-out.worker.js
@@ -0,0 +1,40 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.composite.image.source-out
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+
+ctx.fillStyle = 'rgba(0, 255, 255, 0.5)';
+ctx.fillRect(0, 0, 100, 50);
+ctx.globalCompositeOperation = 'source-out';
+var promise = new Promise(function(resolve, reject) {
+    var xhr = new XMLHttpRequest();
+    xhr.open("GET", '/images/yellow75.png');
+    xhr.responseType = 'blob';
+    xhr.send();
+    xhr.onload = function() {
+        resolve(xhr.response);
+    };
+});
+promise.then(function(response) {
+    createImageBitmap(response).then(bitmap => {
+        ctx.drawImage(bitmap, 0, 0);
+        _assertPixelApprox(canvas, 50,25, 255,255,0,96, 5);
+    }, t_fail);
+}).then(t_pass, t_fail);
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.image.source-over.html b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.image.source-over.html
new file mode 100644
index 0000000000..1d13b77248
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.image.source-over.html
@@ -0,0 +1,44 @@
+
+
+OffscreenCanvas test: 2d.composite.image.source-over
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.composite.image.source-over
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.image.source-over.worker.js b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.image.source-over.worker.js
new file mode 100644
index 0000000000..7937e5be69
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.image.source-over.worker.js
@@ -0,0 +1,40 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.composite.image.source-over
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+
+ctx.fillStyle = 'rgba(0, 255, 255, 0.5)';
+ctx.fillRect(0, 0, 100, 50);
+ctx.globalCompositeOperation = 'source-over';
+var promise = new Promise(function(resolve, reject) {
+    var xhr = new XMLHttpRequest();
+    xhr.open("GET", '/images/yellow75.png');
+    xhr.responseType = 'blob';
+    xhr.send();
+    xhr.onload = function() {
+        resolve(xhr.response);
+    };
+});
+promise.then(function(response) {
+    createImageBitmap(response).then(bitmap => {
+        ctx.drawImage(bitmap, 0, 0);
+        _assertPixelApprox(canvas, 50,25, 219,255,36,223, 5);
+    }, t_fail);
+}).then(t_pass, t_fail);
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.image.xor.html b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.image.xor.html
new file mode 100644
index 0000000000..73253fabca
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.image.xor.html
@@ -0,0 +1,44 @@
+
+
+OffscreenCanvas test: 2d.composite.image.xor
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.composite.image.xor
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.image.xor.worker.js b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.image.xor.worker.js
new file mode 100644
index 0000000000..7a22f7d39f
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.image.xor.worker.js
@@ -0,0 +1,40 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.composite.image.xor
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+
+ctx.fillStyle = 'rgba(0, 255, 255, 0.5)';
+ctx.fillRect(0, 0, 100, 50);
+ctx.globalCompositeOperation = 'xor';
+var promise = new Promise(function(resolve, reject) {
+    var xhr = new XMLHttpRequest();
+    xhr.open("GET", '/images/yellow75.png');
+    xhr.responseType = 'blob';
+    xhr.send();
+    xhr.onload = function() {
+        resolve(xhr.response);
+    };
+});
+promise.then(function(response) {
+    createImageBitmap(response).then(bitmap => {
+        ctx.drawImage(bitmap, 0, 0);
+        _assertPixelApprox(canvas, 50,25, 191,255,64,128, 5);
+    }, t_fail);
+}).then(t_pass, t_fail);
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.operation.casesensitive.html b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.operation.casesensitive.html
new file mode 100644
index 0000000000..f21b92f83e
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.operation.casesensitive.html
@@ -0,0 +1,29 @@
+
+
+OffscreenCanvas test: 2d.composite.operation.casesensitive
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.composite.operation.casesensitive
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.operation.casesensitive.worker.js b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.operation.casesensitive.worker.js
new file mode 100644
index 0000000000..db1b54f5ef
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.operation.casesensitive.worker.js
@@ -0,0 +1,24 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.composite.operation.casesensitive
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.globalCompositeOperation = 'xor';
+  ctx.globalCompositeOperation = 'Source-over';
+  _assertSame(ctx.globalCompositeOperation, 'xor', "ctx.globalCompositeOperation", "'xor'");
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.operation.clear.html b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.operation.clear.html
new file mode 100644
index 0000000000..02496b6d89
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.operation.clear.html
@@ -0,0 +1,29 @@
+
+
+OffscreenCanvas test: 2d.composite.operation.clear
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.composite.operation.clear
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.operation.clear.worker.js b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.operation.clear.worker.js
new file mode 100644
index 0000000000..947dd16c5f
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.operation.clear.worker.js
@@ -0,0 +1,24 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.composite.operation.clear
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.globalCompositeOperation = 'xor';
+  ctx.globalCompositeOperation = 'clear';
+  _assertSame(ctx.globalCompositeOperation, 'clear', "ctx.globalCompositeOperation", "'clear'");
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.operation.darker.html b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.operation.darker.html
new file mode 100644
index 0000000000..29dc039157
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.operation.darker.html
@@ -0,0 +1,29 @@
+
+
+OffscreenCanvas test: 2d.composite.operation.darker
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.composite.operation.darker
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.operation.darker.worker.js b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.operation.darker.worker.js
new file mode 100644
index 0000000000..528f6b93d9
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.operation.darker.worker.js
@@ -0,0 +1,24 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.composite.operation.darker
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.globalCompositeOperation = 'xor';
+  ctx.globalCompositeOperation = 'darker';
+  _assertSame(ctx.globalCompositeOperation, 'xor', "ctx.globalCompositeOperation", "'xor'");
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.operation.default.html b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.operation.default.html
new file mode 100644
index 0000000000..106c0e73f4
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.operation.default.html
@@ -0,0 +1,27 @@
+
+
+OffscreenCanvas test: 2d.composite.operation.default
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.composite.operation.default
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.operation.default.worker.js b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.operation.default.worker.js
new file mode 100644
index 0000000000..ffdb75ad75
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.operation.default.worker.js
@@ -0,0 +1,22 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.composite.operation.default
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  _assertSame(ctx.globalCompositeOperation, 'source-over', "ctx.globalCompositeOperation", "'source-over'");
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.operation.get.html b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.operation.get.html
new file mode 100644
index 0000000000..1ade1a4e54
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.operation.get.html
@@ -0,0 +1,34 @@
+
+
+OffscreenCanvas test: 2d.composite.operation.get
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.composite.operation.get
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.operation.get.worker.js b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.operation.get.worker.js
new file mode 100644
index 0000000000..a266f1d537
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.operation.get.worker.js
@@ -0,0 +1,29 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.composite.operation.get
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  var modes = ['source-atop', 'source-in', 'source-out', 'source-over',
+      'destination-atop', 'destination-in', 'destination-out', 'destination-over',
+      'lighter', 'copy', 'xor'];
+  for (var i = 0; i < modes.length; ++i)
+  {
+      ctx.globalCompositeOperation = modes[i];
+      _assertSame(ctx.globalCompositeOperation, modes[i], "ctx.globalCompositeOperation", "modes[\""+(i)+"\"]");
+  }
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.operation.highlight.html b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.operation.highlight.html
new file mode 100644
index 0000000000..08def9a516
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.operation.highlight.html
@@ -0,0 +1,29 @@
+
+
+OffscreenCanvas test: 2d.composite.operation.highlight
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.composite.operation.highlight
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.operation.highlight.worker.js b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.operation.highlight.worker.js
new file mode 100644
index 0000000000..800c4605e6
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.operation.highlight.worker.js
@@ -0,0 +1,24 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.composite.operation.highlight
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.globalCompositeOperation = 'xor';
+  ctx.globalCompositeOperation = 'highlight';
+  _assertSame(ctx.globalCompositeOperation, 'xor', "ctx.globalCompositeOperation", "'xor'");
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.operation.nullsuffix.html b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.operation.nullsuffix.html
new file mode 100644
index 0000000000..f021d40b53
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.operation.nullsuffix.html
@@ -0,0 +1,29 @@
+
+
+OffscreenCanvas test: 2d.composite.operation.nullsuffix
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.composite.operation.nullsuffix
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.operation.nullsuffix.worker.js b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.operation.nullsuffix.worker.js
new file mode 100644
index 0000000000..1c1d5124a3
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.operation.nullsuffix.worker.js
@@ -0,0 +1,24 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.composite.operation.nullsuffix
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.globalCompositeOperation = 'xor';
+  ctx.globalCompositeOperation = 'source-over\0';
+  _assertSame(ctx.globalCompositeOperation, 'xor', "ctx.globalCompositeOperation", "'xor'");
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.operation.over.html b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.operation.over.html
new file mode 100644
index 0000000000..df934336c6
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.operation.over.html
@@ -0,0 +1,29 @@
+
+
+OffscreenCanvas test: 2d.composite.operation.over
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.composite.operation.over
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.operation.over.worker.js b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.operation.over.worker.js
new file mode 100644
index 0000000000..f75a462e93
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.operation.over.worker.js
@@ -0,0 +1,24 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.composite.operation.over
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.globalCompositeOperation = 'xor';
+  ctx.globalCompositeOperation = 'over';
+  _assertSame(ctx.globalCompositeOperation, 'xor', "ctx.globalCompositeOperation", "'xor'");
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.operation.unrecognised.html b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.operation.unrecognised.html
new file mode 100644
index 0000000000..c649102cc7
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.operation.unrecognised.html
@@ -0,0 +1,29 @@
+
+
+OffscreenCanvas test: 2d.composite.operation.unrecognised
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.composite.operation.unrecognised
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.operation.unrecognised.worker.js b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.operation.unrecognised.worker.js
new file mode 100644
index 0000000000..23a6630e82
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.operation.unrecognised.worker.js
@@ -0,0 +1,24 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.composite.operation.unrecognised
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.globalCompositeOperation = 'xor';
+  ctx.globalCompositeOperation = 'nonexistent';
+  _assertSame(ctx.globalCompositeOperation, 'xor', "ctx.globalCompositeOperation", "'xor'");
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.solid.clear.html b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.solid.clear.html
new file mode 100644
index 0000000000..a06565d6d8
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.solid.clear.html
@@ -0,0 +1,33 @@
+
+
+OffscreenCanvas test: 2d.composite.solid.clear
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.composite.solid.clear
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.solid.clear.worker.js b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.solid.clear.worker.js
new file mode 100644
index 0000000000..983a3b03e3
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.solid.clear.worker.js
@@ -0,0 +1,29 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.composite.solid.clear
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+
+ctx.fillStyle = 'rgba(0, 255, 255, 1.0)';
+ctx.fillRect(0, 0, 100, 50);
+ctx.globalCompositeOperation = 'clear';
+ctx.fillStyle = 'rgba(255, 255, 0, 1.0)';
+ctx.fillRect(0, 0, 100, 50);
+_assertPixelApprox(canvas, 50,25, 0,0,0,0, 5);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.solid.copy.html b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.solid.copy.html
new file mode 100644
index 0000000000..aaad0b418f
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.solid.copy.html
@@ -0,0 +1,33 @@
+
+
+OffscreenCanvas test: 2d.composite.solid.copy
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.composite.solid.copy
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.solid.copy.worker.js b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.solid.copy.worker.js
new file mode 100644
index 0000000000..63cc6c1e90
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.solid.copy.worker.js
@@ -0,0 +1,29 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.composite.solid.copy
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+
+ctx.fillStyle = 'rgba(0, 255, 255, 1.0)';
+ctx.fillRect(0, 0, 100, 50);
+ctx.globalCompositeOperation = 'copy';
+ctx.fillStyle = 'rgba(255, 255, 0, 1.0)';
+ctx.fillRect(0, 0, 100, 50);
+_assertPixelApprox(canvas, 50,25, 255,255,0,255, 5);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.solid.destination-atop.html b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.solid.destination-atop.html
new file mode 100644
index 0000000000..be4cf393a1
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.solid.destination-atop.html
@@ -0,0 +1,33 @@
+
+
+OffscreenCanvas test: 2d.composite.solid.destination-atop
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.composite.solid.destination-atop
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.solid.destination-atop.worker.js b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.solid.destination-atop.worker.js
new file mode 100644
index 0000000000..a09827ca88
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.solid.destination-atop.worker.js
@@ -0,0 +1,29 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.composite.solid.destination-atop
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+
+ctx.fillStyle = 'rgba(0, 255, 255, 1.0)';
+ctx.fillRect(0, 0, 100, 50);
+ctx.globalCompositeOperation = 'destination-atop';
+ctx.fillStyle = 'rgba(255, 255, 0, 1.0)';
+ctx.fillRect(0, 0, 100, 50);
+_assertPixelApprox(canvas, 50,25, 0,255,255,255, 5);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.solid.destination-in.html b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.solid.destination-in.html
new file mode 100644
index 0000000000..e5ea33b5b0
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.solid.destination-in.html
@@ -0,0 +1,33 @@
+
+
+OffscreenCanvas test: 2d.composite.solid.destination-in
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.composite.solid.destination-in
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.solid.destination-in.worker.js b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.solid.destination-in.worker.js
new file mode 100644
index 0000000000..b06ad63266
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.solid.destination-in.worker.js
@@ -0,0 +1,29 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.composite.solid.destination-in
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+
+ctx.fillStyle = 'rgba(0, 255, 255, 1.0)';
+ctx.fillRect(0, 0, 100, 50);
+ctx.globalCompositeOperation = 'destination-in';
+ctx.fillStyle = 'rgba(255, 255, 0, 1.0)';
+ctx.fillRect(0, 0, 100, 50);
+_assertPixelApprox(canvas, 50,25, 0,255,255,255, 5);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.solid.destination-out.html b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.solid.destination-out.html
new file mode 100644
index 0000000000..49efe240d0
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.solid.destination-out.html
@@ -0,0 +1,33 @@
+
+
+OffscreenCanvas test: 2d.composite.solid.destination-out
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.composite.solid.destination-out
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.solid.destination-out.worker.js b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.solid.destination-out.worker.js
new file mode 100644
index 0000000000..3b0232e255
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.solid.destination-out.worker.js
@@ -0,0 +1,29 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.composite.solid.destination-out
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+
+ctx.fillStyle = 'rgba(0, 255, 255, 1.0)';
+ctx.fillRect(0, 0, 100, 50);
+ctx.globalCompositeOperation = 'destination-out';
+ctx.fillStyle = 'rgba(255, 255, 0, 1.0)';
+ctx.fillRect(0, 0, 100, 50);
+_assertPixelApprox(canvas, 50,25, 0,0,0,0, 5);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.solid.destination-over.html b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.solid.destination-over.html
new file mode 100644
index 0000000000..c1d7965cad
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.solid.destination-over.html
@@ -0,0 +1,33 @@
+
+
+OffscreenCanvas test: 2d.composite.solid.destination-over
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.composite.solid.destination-over
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.solid.destination-over.worker.js b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.solid.destination-over.worker.js
new file mode 100644
index 0000000000..99d64be578
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.solid.destination-over.worker.js
@@ -0,0 +1,29 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.composite.solid.destination-over
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+
+ctx.fillStyle = 'rgba(0, 255, 255, 1.0)';
+ctx.fillRect(0, 0, 100, 50);
+ctx.globalCompositeOperation = 'destination-over';
+ctx.fillStyle = 'rgba(255, 255, 0, 1.0)';
+ctx.fillRect(0, 0, 100, 50);
+_assertPixelApprox(canvas, 50,25, 0,255,255,255, 5);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.solid.lighter.html b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.solid.lighter.html
new file mode 100644
index 0000000000..2877e14ad9
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.solid.lighter.html
@@ -0,0 +1,33 @@
+
+
+OffscreenCanvas test: 2d.composite.solid.lighter
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.composite.solid.lighter
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.solid.lighter.worker.js b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.solid.lighter.worker.js
new file mode 100644
index 0000000000..011a19934e
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.solid.lighter.worker.js
@@ -0,0 +1,29 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.composite.solid.lighter
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+
+ctx.fillStyle = 'rgba(0, 255, 255, 1.0)';
+ctx.fillRect(0, 0, 100, 50);
+ctx.globalCompositeOperation = 'lighter';
+ctx.fillStyle = 'rgba(255, 255, 0, 1.0)';
+ctx.fillRect(0, 0, 100, 50);
+_assertPixelApprox(canvas, 50,25, 255,255,255,255, 5);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.solid.source-atop.html b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.solid.source-atop.html
new file mode 100644
index 0000000000..9f972edabc
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.solid.source-atop.html
@@ -0,0 +1,33 @@
+
+
+OffscreenCanvas test: 2d.composite.solid.source-atop
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.composite.solid.source-atop
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.solid.source-atop.worker.js b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.solid.source-atop.worker.js
new file mode 100644
index 0000000000..2dc6ec9b2e
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.solid.source-atop.worker.js
@@ -0,0 +1,29 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.composite.solid.source-atop
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+
+ctx.fillStyle = 'rgba(0, 255, 255, 1.0)';
+ctx.fillRect(0, 0, 100, 50);
+ctx.globalCompositeOperation = 'source-atop';
+ctx.fillStyle = 'rgba(255, 255, 0, 1.0)';
+ctx.fillRect(0, 0, 100, 50);
+_assertPixelApprox(canvas, 50,25, 255,255,0,255, 5);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.solid.source-in.html b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.solid.source-in.html
new file mode 100644
index 0000000000..c674bbde91
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.solid.source-in.html
@@ -0,0 +1,33 @@
+
+
+OffscreenCanvas test: 2d.composite.solid.source-in
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.composite.solid.source-in
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.solid.source-in.worker.js b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.solid.source-in.worker.js
new file mode 100644
index 0000000000..5b833ec156
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.solid.source-in.worker.js
@@ -0,0 +1,29 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.composite.solid.source-in
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+
+ctx.fillStyle = 'rgba(0, 255, 255, 1.0)';
+ctx.fillRect(0, 0, 100, 50);
+ctx.globalCompositeOperation = 'source-in';
+ctx.fillStyle = 'rgba(255, 255, 0, 1.0)';
+ctx.fillRect(0, 0, 100, 50);
+_assertPixelApprox(canvas, 50,25, 255,255,0,255, 5);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.solid.source-out.html b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.solid.source-out.html
new file mode 100644
index 0000000000..0fa403bb75
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.solid.source-out.html
@@ -0,0 +1,33 @@
+
+
+OffscreenCanvas test: 2d.composite.solid.source-out
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.composite.solid.source-out
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.solid.source-out.worker.js b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.solid.source-out.worker.js
new file mode 100644
index 0000000000..0486939935
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.solid.source-out.worker.js
@@ -0,0 +1,29 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.composite.solid.source-out
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+
+ctx.fillStyle = 'rgba(0, 255, 255, 1.0)';
+ctx.fillRect(0, 0, 100, 50);
+ctx.globalCompositeOperation = 'source-out';
+ctx.fillStyle = 'rgba(255, 255, 0, 1.0)';
+ctx.fillRect(0, 0, 100, 50);
+_assertPixelApprox(canvas, 50,25, 0,0,0,0, 5);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.solid.source-over.html b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.solid.source-over.html
new file mode 100644
index 0000000000..4392e60c9e
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.solid.source-over.html
@@ -0,0 +1,33 @@
+
+
+OffscreenCanvas test: 2d.composite.solid.source-over
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.composite.solid.source-over
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.solid.source-over.worker.js b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.solid.source-over.worker.js
new file mode 100644
index 0000000000..ce8190ec0f
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.solid.source-over.worker.js
@@ -0,0 +1,29 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.composite.solid.source-over
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+
+ctx.fillStyle = 'rgba(0, 255, 255, 1.0)';
+ctx.fillRect(0, 0, 100, 50);
+ctx.globalCompositeOperation = 'source-over';
+ctx.fillStyle = 'rgba(255, 255, 0, 1.0)';
+ctx.fillRect(0, 0, 100, 50);
+_assertPixelApprox(canvas, 50,25, 255,255,0,255, 5);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.solid.xor.html b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.solid.xor.html
new file mode 100644
index 0000000000..a9eb83e6a9
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.solid.xor.html
@@ -0,0 +1,33 @@
+
+
+OffscreenCanvas test: 2d.composite.solid.xor
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.composite.solid.xor
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.solid.xor.worker.js b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.solid.xor.worker.js
new file mode 100644
index 0000000000..8b7edec945
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.solid.xor.worker.js
@@ -0,0 +1,29 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.composite.solid.xor
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+
+ctx.fillStyle = 'rgba(0, 255, 255, 1.0)';
+ctx.fillRect(0, 0, 100, 50);
+ctx.globalCompositeOperation = 'xor';
+ctx.fillStyle = 'rgba(255, 255, 0, 1.0)';
+ctx.fillRect(0, 0, 100, 50);
+_assertPixelApprox(canvas, 50,25, 0,0,0,0, 5);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.transparent.clear.html b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.transparent.clear.html
new file mode 100644
index 0000000000..91ba094fe8
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.transparent.clear.html
@@ -0,0 +1,33 @@
+
+
+OffscreenCanvas test: 2d.composite.transparent.clear
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.composite.transparent.clear
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.transparent.clear.worker.js b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.transparent.clear.worker.js
new file mode 100644
index 0000000000..6624bbc17d
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.transparent.clear.worker.js
@@ -0,0 +1,29 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.composite.transparent.clear
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+
+ctx.fillStyle = 'rgba(0, 255, 0, 0.5)';
+ctx.fillRect(0, 0, 100, 50);
+ctx.globalCompositeOperation = 'clear';
+ctx.fillStyle = 'rgba(0, 0, 255, 0.75)';
+ctx.fillRect(0, 0, 100, 50);
+_assertPixelApprox(canvas, 50,25, 0,0,0,0, 5);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.transparent.copy.html b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.transparent.copy.html
new file mode 100644
index 0000000000..20c107bd77
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.transparent.copy.html
@@ -0,0 +1,33 @@
+
+
+OffscreenCanvas test: 2d.composite.transparent.copy
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.composite.transparent.copy
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.transparent.copy.worker.js b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.transparent.copy.worker.js
new file mode 100644
index 0000000000..7fb646acd5
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.transparent.copy.worker.js
@@ -0,0 +1,29 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.composite.transparent.copy
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+
+ctx.fillStyle = 'rgba(0, 255, 0, 0.5)';
+ctx.fillRect(0, 0, 100, 50);
+ctx.globalCompositeOperation = 'copy';
+ctx.fillStyle = 'rgba(0, 0, 255, 0.75)';
+ctx.fillRect(0, 0, 100, 50);
+_assertPixelApprox(canvas, 50,25, 0,0,255,191, 5);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.transparent.destination-atop.html b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.transparent.destination-atop.html
new file mode 100644
index 0000000000..2bc5466d27
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.transparent.destination-atop.html
@@ -0,0 +1,33 @@
+
+
+OffscreenCanvas test: 2d.composite.transparent.destination-atop
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.composite.transparent.destination-atop
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.transparent.destination-atop.worker.js b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.transparent.destination-atop.worker.js
new file mode 100644
index 0000000000..f433bedf7c
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.transparent.destination-atop.worker.js
@@ -0,0 +1,29 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.composite.transparent.destination-atop
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+
+ctx.fillStyle = 'rgba(0, 255, 0, 0.5)';
+ctx.fillRect(0, 0, 100, 50);
+ctx.globalCompositeOperation = 'destination-atop';
+ctx.fillStyle = 'rgba(0, 0, 255, 0.75)';
+ctx.fillRect(0, 0, 100, 50);
+_assertPixelApprox(canvas, 50,25, 0,128,128,191, 5);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.transparent.destination-in.html b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.transparent.destination-in.html
new file mode 100644
index 0000000000..1d1121812d
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.transparent.destination-in.html
@@ -0,0 +1,33 @@
+
+
+OffscreenCanvas test: 2d.composite.transparent.destination-in
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.composite.transparent.destination-in
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.transparent.destination-in.worker.js b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.transparent.destination-in.worker.js
new file mode 100644
index 0000000000..a4c159aeef
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.transparent.destination-in.worker.js
@@ -0,0 +1,29 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.composite.transparent.destination-in
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+
+ctx.fillStyle = 'rgba(0, 255, 0, 0.5)';
+ctx.fillRect(0, 0, 100, 50);
+ctx.globalCompositeOperation = 'destination-in';
+ctx.fillStyle = 'rgba(0, 0, 255, 0.75)';
+ctx.fillRect(0, 0, 100, 50);
+_assertPixelApprox(canvas, 50,25, 0,255,0,96, 5);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.transparent.destination-out.html b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.transparent.destination-out.html
new file mode 100644
index 0000000000..17b3fecd02
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.transparent.destination-out.html
@@ -0,0 +1,33 @@
+
+
+OffscreenCanvas test: 2d.composite.transparent.destination-out
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.composite.transparent.destination-out
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.transparent.destination-out.worker.js b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.transparent.destination-out.worker.js
new file mode 100644
index 0000000000..cf6827fc51
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.transparent.destination-out.worker.js
@@ -0,0 +1,29 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.composite.transparent.destination-out
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+
+ctx.fillStyle = 'rgba(0, 255, 0, 0.5)';
+ctx.fillRect(0, 0, 100, 50);
+ctx.globalCompositeOperation = 'destination-out';
+ctx.fillStyle = 'rgba(0, 0, 255, 0.75)';
+ctx.fillRect(0, 0, 100, 50);
+_assertPixelApprox(canvas, 50,25, 0,255,0,32, 5);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.transparent.destination-over.html b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.transparent.destination-over.html
new file mode 100644
index 0000000000..04c267a817
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.transparent.destination-over.html
@@ -0,0 +1,33 @@
+
+
+OffscreenCanvas test: 2d.composite.transparent.destination-over
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.composite.transparent.destination-over
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.transparent.destination-over.worker.js b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.transparent.destination-over.worker.js
new file mode 100644
index 0000000000..98a4b5b59e
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.transparent.destination-over.worker.js
@@ -0,0 +1,29 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.composite.transparent.destination-over
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+
+ctx.fillStyle = 'rgba(0, 255, 0, 0.5)';
+ctx.fillRect(0, 0, 100, 50);
+ctx.globalCompositeOperation = 'destination-over';
+ctx.fillStyle = 'rgba(0, 0, 255, 0.75)';
+ctx.fillRect(0, 0, 100, 50);
+_assertPixelApprox(canvas, 50,25, 0,146,109,223, 5);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.transparent.lighter.html b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.transparent.lighter.html
new file mode 100644
index 0000000000..86d06f2485
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.transparent.lighter.html
@@ -0,0 +1,33 @@
+
+
+OffscreenCanvas test: 2d.composite.transparent.lighter
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.composite.transparent.lighter
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.transparent.lighter.worker.js b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.transparent.lighter.worker.js
new file mode 100644
index 0000000000..f9b419ace7
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.transparent.lighter.worker.js
@@ -0,0 +1,29 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.composite.transparent.lighter
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+
+ctx.fillStyle = 'rgba(0, 255, 0, 0.5)';
+ctx.fillRect(0, 0, 100, 50);
+ctx.globalCompositeOperation = 'lighter';
+ctx.fillStyle = 'rgba(0, 0, 255, 0.75)';
+ctx.fillRect(0, 0, 100, 50);
+_assertPixelApprox(canvas, 50,25, 0,128,191,255, 5);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.transparent.source-atop.html b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.transparent.source-atop.html
new file mode 100644
index 0000000000..f4e79c0c24
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.transparent.source-atop.html
@@ -0,0 +1,33 @@
+
+
+OffscreenCanvas test: 2d.composite.transparent.source-atop
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.composite.transparent.source-atop
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.transparent.source-atop.worker.js b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.transparent.source-atop.worker.js
new file mode 100644
index 0000000000..db65db8366
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.transparent.source-atop.worker.js
@@ -0,0 +1,29 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.composite.transparent.source-atop
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+
+ctx.fillStyle = 'rgba(0, 255, 0, 0.5)';
+ctx.fillRect(0, 0, 100, 50);
+ctx.globalCompositeOperation = 'source-atop';
+ctx.fillStyle = 'rgba(0, 0, 255, 0.75)';
+ctx.fillRect(0, 0, 100, 50);
+_assertPixelApprox(canvas, 50,25, 0,64,191,128, 5);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.transparent.source-in.html b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.transparent.source-in.html
new file mode 100644
index 0000000000..56b4e7704d
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.transparent.source-in.html
@@ -0,0 +1,33 @@
+
+
+OffscreenCanvas test: 2d.composite.transparent.source-in
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.composite.transparent.source-in
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.transparent.source-in.worker.js b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.transparent.source-in.worker.js
new file mode 100644
index 0000000000..32765c4c03
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.transparent.source-in.worker.js
@@ -0,0 +1,29 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.composite.transparent.source-in
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+
+ctx.fillStyle = 'rgba(0, 255, 0, 0.5)';
+ctx.fillRect(0, 0, 100, 50);
+ctx.globalCompositeOperation = 'source-in';
+ctx.fillStyle = 'rgba(0, 0, 255, 0.75)';
+ctx.fillRect(0, 0, 100, 50);
+_assertPixelApprox(canvas, 50,25, 0,0,255,96, 5);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.transparent.source-out.html b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.transparent.source-out.html
new file mode 100644
index 0000000000..cca28c5ebc
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.transparent.source-out.html
@@ -0,0 +1,33 @@
+
+
+OffscreenCanvas test: 2d.composite.transparent.source-out
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.composite.transparent.source-out
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.transparent.source-out.worker.js b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.transparent.source-out.worker.js
new file mode 100644
index 0000000000..3cf507bf84
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.transparent.source-out.worker.js
@@ -0,0 +1,29 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.composite.transparent.source-out
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+
+ctx.fillStyle = 'rgba(0, 255, 0, 0.5)';
+ctx.fillRect(0, 0, 100, 50);
+ctx.globalCompositeOperation = 'source-out';
+ctx.fillStyle = 'rgba(0, 0, 255, 0.75)';
+ctx.fillRect(0, 0, 100, 50);
+_assertPixelApprox(canvas, 50,25, 0,0,255,96, 5);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.transparent.source-over.html b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.transparent.source-over.html
new file mode 100644
index 0000000000..a8ae30131d
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.transparent.source-over.html
@@ -0,0 +1,33 @@
+
+
+OffscreenCanvas test: 2d.composite.transparent.source-over
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.composite.transparent.source-over
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.transparent.source-over.worker.js b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.transparent.source-over.worker.js
new file mode 100644
index 0000000000..35545c04d4
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.transparent.source-over.worker.js
@@ -0,0 +1,29 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.composite.transparent.source-over
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+
+ctx.fillStyle = 'rgba(0, 255, 0, 0.5)';
+ctx.fillRect(0, 0, 100, 50);
+ctx.globalCompositeOperation = 'source-over';
+ctx.fillStyle = 'rgba(0, 0, 255, 0.75)';
+ctx.fillRect(0, 0, 100, 50);
+_assertPixelApprox(canvas, 50,25, 0,36,219,223, 5);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.transparent.xor.html b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.transparent.xor.html
new file mode 100644
index 0000000000..638bae02ec
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.transparent.xor.html
@@ -0,0 +1,33 @@
+
+
+OffscreenCanvas test: 2d.composite.transparent.xor
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.composite.transparent.xor
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.transparent.xor.worker.js b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.transparent.xor.worker.js
new file mode 100644
index 0000000000..b21d30d900
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.transparent.xor.worker.js
@@ -0,0 +1,29 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.composite.transparent.xor
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+
+ctx.fillStyle = 'rgba(0, 255, 0, 0.5)';
+ctx.fillRect(0, 0, 100, 50);
+ctx.globalCompositeOperation = 'xor';
+ctx.fillStyle = 'rgba(0, 0, 255, 0.75)';
+ctx.fillRect(0, 0, 100, 50);
+_assertPixelApprox(canvas, 50,25, 0,64,191,128, 5);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.uncovered.fill.copy.html b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.uncovered.fill.copy.html
new file mode 100644
index 0000000000..f10275f407
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.uncovered.fill.copy.html
@@ -0,0 +1,34 @@
+
+
+OffscreenCanvas test: 2d.composite.uncovered.fill.copy
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.composite.uncovered.fill.copy
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              fill() draws pixels not covered by the source object as (0,0,0,0), and does not leave the pixels unchanged.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.uncovered.fill.copy.worker.js b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.uncovered.fill.copy.worker.js
new file mode 100644
index 0000000000..3b86c720f5
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.uncovered.fill.copy.worker.js
@@ -0,0 +1,30 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.composite.uncovered.fill.copy
+// Description:fill() draws pixels not covered by the source object as (0,0,0,0), and does not leave the pixels unchanged.
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("fill() draws pixels not covered by the source object as (0,0,0,0), and does not leave the pixels unchanged.");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+
+ctx.fillStyle = 'rgba(0, 255, 0, 0.5)';
+ctx.fillRect(0, 0, 100, 50);
+ctx.globalCompositeOperation = 'copy';
+ctx.fillStyle = 'rgba(0, 0, 255, 0.75)';
+ctx.translate(0, 25);
+ctx.fillRect(0, 50, 100, 50);
+_assertPixelApprox(canvas, 50,25, 0,0,0,0, 5);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.uncovered.fill.destination-atop.html b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.uncovered.fill.destination-atop.html
new file mode 100644
index 0000000000..8672e9e19f
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.uncovered.fill.destination-atop.html
@@ -0,0 +1,34 @@
+
+
+OffscreenCanvas test: 2d.composite.uncovered.fill.destination-atop
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.composite.uncovered.fill.destination-atop
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              fill() draws pixels not covered by the source object as (0,0,0,0), and does not leave the pixels unchanged.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.uncovered.fill.destination-atop.worker.js b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.uncovered.fill.destination-atop.worker.js
new file mode 100644
index 0000000000..69610fc107
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.uncovered.fill.destination-atop.worker.js
@@ -0,0 +1,30 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.composite.uncovered.fill.destination-atop
+// Description:fill() draws pixels not covered by the source object as (0,0,0,0), and does not leave the pixels unchanged.
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("fill() draws pixels not covered by the source object as (0,0,0,0), and does not leave the pixels unchanged.");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+
+ctx.fillStyle = 'rgba(0, 255, 0, 0.5)';
+ctx.fillRect(0, 0, 100, 50);
+ctx.globalCompositeOperation = 'destination-atop';
+ctx.fillStyle = 'rgba(0, 0, 255, 0.75)';
+ctx.translate(0, 25);
+ctx.fillRect(0, 50, 100, 50);
+_assertPixelApprox(canvas, 50,25, 0,0,0,0, 5);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.uncovered.fill.destination-in.html b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.uncovered.fill.destination-in.html
new file mode 100644
index 0000000000..0f069372ad
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.uncovered.fill.destination-in.html
@@ -0,0 +1,35 @@
+
+
+OffscreenCanvas test: 2d.composite.uncovered.fill.destination-in
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.composite.uncovered.fill.destination-in
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              fill() draws pixels not covered by the source object as (0,0,0,0), and does not leave the pixels unchanged.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.uncovered.fill.destination-in.worker.js b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.uncovered.fill.destination-in.worker.js
new file mode 100644
index 0000000000..26b287134b
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.uncovered.fill.destination-in.worker.js
@@ -0,0 +1,31 @@
+// META: timeout=long
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.composite.uncovered.fill.destination-in
+// Description:fill() draws pixels not covered by the source object as (0,0,0,0), and does not leave the pixels unchanged.
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("fill() draws pixels not covered by the source object as (0,0,0,0), and does not leave the pixels unchanged.");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+
+ctx.fillStyle = 'rgba(0, 255, 0, 0.5)';
+ctx.fillRect(0, 0, 100, 50);
+ctx.globalCompositeOperation = 'destination-in';
+ctx.fillStyle = 'rgba(0, 0, 255, 0.75)';
+ctx.translate(0, 25);
+ctx.fillRect(0, 50, 100, 50);
+_assertPixelApprox(canvas, 50,25, 0,0,0,0, 5);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.uncovered.fill.source-in.html b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.uncovered.fill.source-in.html
new file mode 100644
index 0000000000..6e1ecdd719
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.uncovered.fill.source-in.html
@@ -0,0 +1,34 @@
+
+
+OffscreenCanvas test: 2d.composite.uncovered.fill.source-in
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.composite.uncovered.fill.source-in
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              fill() draws pixels not covered by the source object as (0,0,0,0), and does not leave the pixels unchanged.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.uncovered.fill.source-in.worker.js b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.uncovered.fill.source-in.worker.js
new file mode 100644
index 0000000000..6da98654cf
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.uncovered.fill.source-in.worker.js
@@ -0,0 +1,30 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.composite.uncovered.fill.source-in
+// Description:fill() draws pixels not covered by the source object as (0,0,0,0), and does not leave the pixels unchanged.
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("fill() draws pixels not covered by the source object as (0,0,0,0), and does not leave the pixels unchanged.");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+
+ctx.fillStyle = 'rgba(0, 255, 0, 0.5)';
+ctx.fillRect(0, 0, 100, 50);
+ctx.globalCompositeOperation = 'source-in';
+ctx.fillStyle = 'rgba(0, 0, 255, 0.75)';
+ctx.translate(0, 25);
+ctx.fillRect(0, 50, 100, 50);
+_assertPixelApprox(canvas, 50,25, 0,0,0,0, 5);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.uncovered.fill.source-out.html b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.uncovered.fill.source-out.html
new file mode 100644
index 0000000000..de16897f8c
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.uncovered.fill.source-out.html
@@ -0,0 +1,34 @@
+
+
+OffscreenCanvas test: 2d.composite.uncovered.fill.source-out
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.composite.uncovered.fill.source-out
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              fill() draws pixels not covered by the source object as (0,0,0,0), and does not leave the pixels unchanged.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.uncovered.fill.source-out.worker.js b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.uncovered.fill.source-out.worker.js
new file mode 100644
index 0000000000..515b587b58
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.uncovered.fill.source-out.worker.js
@@ -0,0 +1,30 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.composite.uncovered.fill.source-out
+// Description:fill() draws pixels not covered by the source object as (0,0,0,0), and does not leave the pixels unchanged.
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("fill() draws pixels not covered by the source object as (0,0,0,0), and does not leave the pixels unchanged.");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+
+ctx.fillStyle = 'rgba(0, 255, 0, 0.5)';
+ctx.fillRect(0, 0, 100, 50);
+ctx.globalCompositeOperation = 'source-out';
+ctx.fillStyle = 'rgba(0, 0, 255, 0.75)';
+ctx.translate(0, 25);
+ctx.fillRect(0, 50, 100, 50);
+_assertPixelApprox(canvas, 50,25, 0,0,0,0, 5);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.uncovered.image.copy.html b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.uncovered.image.copy.html
new file mode 100644
index 0000000000..5f3c9a1914
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.uncovered.image.copy.html
@@ -0,0 +1,45 @@
+
+
+OffscreenCanvas test: 2d.composite.uncovered.image.copy
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.composite.uncovered.image.copy
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              drawImage() draws pixels not covered by the source object as (0,0,0,0), and does not leave the pixels unchanged.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.uncovered.image.copy.worker.js b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.uncovered.image.copy.worker.js
new file mode 100644
index 0000000000..2faecdf0dd
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.uncovered.image.copy.worker.js
@@ -0,0 +1,41 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.composite.uncovered.image.copy
+// Description:drawImage() draws pixels not covered by the source object as (0,0,0,0), and does not leave the pixels unchanged.
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("drawImage() draws pixels not covered by the source object as (0,0,0,0), and does not leave the pixels unchanged.");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+
+ctx.fillStyle = 'rgba(0, 255, 255, 0.5)';
+ctx.fillRect(0, 0, 100, 50);
+ctx.globalCompositeOperation = 'copy';
+var promise = new Promise(function(resolve, reject) {
+    var xhr = new XMLHttpRequest();
+    xhr.open("GET", '/images/yellow.png');
+    xhr.responseType = 'blob';
+    xhr.send();
+    xhr.onload = function() {
+        resolve(xhr.response);
+    };
+});
+promise.then(function(response) {
+    createImageBitmap(response).then(bitmap => {
+        ctx.drawImage(bitmap, 40, 40, 10, 10, 40, 50, 10, 10);
+        _assertPixelApprox(canvas, 15,15, 0,0,0,0, 5);
+        _assertPixelApprox(canvas, 50,25, 0,0,0,0, 5);
+    }, t_fail);
+}).then(t_pass, t_fail);
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.uncovered.image.destination-atop.html b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.uncovered.image.destination-atop.html
new file mode 100644
index 0000000000..3605e44698
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.uncovered.image.destination-atop.html
@@ -0,0 +1,45 @@
+
+
+OffscreenCanvas test: 2d.composite.uncovered.image.destination-atop
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.composite.uncovered.image.destination-atop
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              drawImage() draws pixels not covered by the source object as (0,0,0,0), and does not leave the pixels unchanged.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.uncovered.image.destination-atop.worker.js b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.uncovered.image.destination-atop.worker.js
new file mode 100644
index 0000000000..8b361e066d
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.uncovered.image.destination-atop.worker.js
@@ -0,0 +1,41 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.composite.uncovered.image.destination-atop
+// Description:drawImage() draws pixels not covered by the source object as (0,0,0,0), and does not leave the pixels unchanged.
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("drawImage() draws pixels not covered by the source object as (0,0,0,0), and does not leave the pixels unchanged.");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+
+ctx.fillStyle = 'rgba(0, 255, 255, 0.5)';
+ctx.fillRect(0, 0, 100, 50);
+ctx.globalCompositeOperation = 'destination-atop';
+var promise = new Promise(function(resolve, reject) {
+    var xhr = new XMLHttpRequest();
+    xhr.open("GET", '/images/yellow.png');
+    xhr.responseType = 'blob';
+    xhr.send();
+    xhr.onload = function() {
+        resolve(xhr.response);
+    };
+});
+promise.then(function(response) {
+    createImageBitmap(response).then(bitmap => {
+        ctx.drawImage(bitmap, 40, 40, 10, 10, 40, 50, 10, 10);
+        _assertPixelApprox(canvas, 15,15, 0,0,0,0, 5);
+        _assertPixelApprox(canvas, 50,25, 0,0,0,0, 5);
+    }, t_fail);
+}).then(t_pass, t_fail);
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.uncovered.image.destination-in.html b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.uncovered.image.destination-in.html
new file mode 100644
index 0000000000..c48ee8e16e
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.uncovered.image.destination-in.html
@@ -0,0 +1,45 @@
+
+
+OffscreenCanvas test: 2d.composite.uncovered.image.destination-in
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.composite.uncovered.image.destination-in
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              drawImage() draws pixels not covered by the source object as (0,0,0,0), and does not leave the pixels unchanged.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.uncovered.image.destination-in.worker.js b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.uncovered.image.destination-in.worker.js
new file mode 100644
index 0000000000..b270efc7aa
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.uncovered.image.destination-in.worker.js
@@ -0,0 +1,41 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.composite.uncovered.image.destination-in
+// Description:drawImage() draws pixels not covered by the source object as (0,0,0,0), and does not leave the pixels unchanged.
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("drawImage() draws pixels not covered by the source object as (0,0,0,0), and does not leave the pixels unchanged.");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+
+ctx.fillStyle = 'rgba(0, 255, 255, 0.5)';
+ctx.fillRect(0, 0, 100, 50);
+ctx.globalCompositeOperation = 'destination-in';
+var promise = new Promise(function(resolve, reject) {
+    var xhr = new XMLHttpRequest();
+    xhr.open("GET", '/images/yellow.png');
+    xhr.responseType = 'blob';
+    xhr.send();
+    xhr.onload = function() {
+        resolve(xhr.response);
+    };
+});
+promise.then(function(response) {
+    createImageBitmap(response).then(bitmap => {
+        ctx.drawImage(bitmap, 40, 40, 10, 10, 40, 50, 10, 10);
+        _assertPixelApprox(canvas, 15,15, 0,0,0,0, 5);
+        _assertPixelApprox(canvas, 50,25, 0,0,0,0, 5);
+    }, t_fail);
+}).then(t_pass, t_fail);
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.uncovered.image.source-in.html b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.uncovered.image.source-in.html
new file mode 100644
index 0000000000..af4c3b7daa
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.uncovered.image.source-in.html
@@ -0,0 +1,45 @@
+
+
+OffscreenCanvas test: 2d.composite.uncovered.image.source-in
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.composite.uncovered.image.source-in
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              drawImage() draws pixels not covered by the source object as (0,0,0,0), and does not leave the pixels unchanged.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.uncovered.image.source-in.worker.js b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.uncovered.image.source-in.worker.js
new file mode 100644
index 0000000000..5fe00cf14b
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.uncovered.image.source-in.worker.js
@@ -0,0 +1,41 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.composite.uncovered.image.source-in
+// Description:drawImage() draws pixels not covered by the source object as (0,0,0,0), and does not leave the pixels unchanged.
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("drawImage() draws pixels not covered by the source object as (0,0,0,0), and does not leave the pixels unchanged.");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+
+ctx.fillStyle = 'rgba(0, 255, 255, 0.5)';
+ctx.fillRect(0, 0, 100, 50);
+ctx.globalCompositeOperation = 'source-in';
+var promise = new Promise(function(resolve, reject) {
+    var xhr = new XMLHttpRequest();
+    xhr.open("GET", '/images/yellow.png');
+    xhr.responseType = 'blob';
+    xhr.send();
+    xhr.onload = function() {
+        resolve(xhr.response);
+    };
+});
+promise.then(function(response) {
+    createImageBitmap(response).then(bitmap => {
+        ctx.drawImage(bitmap, 40, 40, 10, 10, 40, 50, 10, 10);
+        _assertPixelApprox(canvas, 15,15, 0,0,0,0, 5);
+        _assertPixelApprox(canvas, 50,25, 0,0,0,0, 5);
+    }, t_fail);
+}).then(t_pass, t_fail);
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.uncovered.image.source-out.html b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.uncovered.image.source-out.html
new file mode 100644
index 0000000000..4f1c3869b0
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.uncovered.image.source-out.html
@@ -0,0 +1,45 @@
+
+
+OffscreenCanvas test: 2d.composite.uncovered.image.source-out
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.composite.uncovered.image.source-out
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              drawImage() draws pixels not covered by the source object as (0,0,0,0), and does not leave the pixels unchanged.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.uncovered.image.source-out.worker.js b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.uncovered.image.source-out.worker.js
new file mode 100644
index 0000000000..f93185bc66
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.uncovered.image.source-out.worker.js
@@ -0,0 +1,41 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.composite.uncovered.image.source-out
+// Description:drawImage() draws pixels not covered by the source object as (0,0,0,0), and does not leave the pixels unchanged.
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("drawImage() draws pixels not covered by the source object as (0,0,0,0), and does not leave the pixels unchanged.");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+
+ctx.fillStyle = 'rgba(0, 255, 255, 0.5)';
+ctx.fillRect(0, 0, 100, 50);
+ctx.globalCompositeOperation = 'source-out';
+var promise = new Promise(function(resolve, reject) {
+    var xhr = new XMLHttpRequest();
+    xhr.open("GET", '/images/yellow.png');
+    xhr.responseType = 'blob';
+    xhr.send();
+    xhr.onload = function() {
+        resolve(xhr.response);
+    };
+});
+promise.then(function(response) {
+    createImageBitmap(response).then(bitmap => {
+        ctx.drawImage(bitmap, 40, 40, 10, 10, 40, 50, 10, 10);
+        _assertPixelApprox(canvas, 15,15, 0,0,0,0, 5);
+        _assertPixelApprox(canvas, 50,25, 0,0,0,0, 5);
+    }, t_fail);
+}).then(t_pass, t_fail);
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.uncovered.nocontext.copy.html b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.uncovered.nocontext.copy.html
new file mode 100644
index 0000000000..57c499d81c
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.uncovered.nocontext.copy.html
@@ -0,0 +1,33 @@
+
+
+OffscreenCanvas test: 2d.composite.uncovered.nocontext.copy
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.composite.uncovered.nocontext.copy
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              drawImage() of a canvas with no context draws pixels as (0,0,0,0), and does not leave the pixels unchanged.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.uncovered.nocontext.copy.worker.js b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.uncovered.nocontext.copy.worker.js
new file mode 100644
index 0000000000..bf6bdfe943
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.uncovered.nocontext.copy.worker.js
@@ -0,0 +1,29 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.composite.uncovered.nocontext.copy
+// Description:drawImage() of a canvas with no context draws pixels as (0,0,0,0), and does not leave the pixels unchanged.
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("drawImage() of a canvas with no context draws pixels as (0,0,0,0), and does not leave the pixels unchanged.");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+
+ctx.fillStyle = 'rgba(0, 255, 255, 0.5)';
+ctx.fillRect(0, 0, 100, 50);
+ctx.globalCompositeOperation = 'copy';
+var offscreenCanvas2 = new OffscreenCanvas(100, 50);
+ctx.drawImage(offscreenCanvas2, 0, 0);
+_assertPixelApprox(canvas, 50,25, 0,0,0,0, 5);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.uncovered.nocontext.destination-atop.html b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.uncovered.nocontext.destination-atop.html
new file mode 100644
index 0000000000..73684800ca
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.uncovered.nocontext.destination-atop.html
@@ -0,0 +1,33 @@
+
+
+OffscreenCanvas test: 2d.composite.uncovered.nocontext.destination-atop
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.composite.uncovered.nocontext.destination-atop
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              drawImage() of a canvas with no context draws pixels as (0,0,0,0), and does not leave the pixels unchanged.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.uncovered.nocontext.destination-atop.worker.js b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.uncovered.nocontext.destination-atop.worker.js
new file mode 100644
index 0000000000..3574add7d8
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.uncovered.nocontext.destination-atop.worker.js
@@ -0,0 +1,29 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.composite.uncovered.nocontext.destination-atop
+// Description:drawImage() of a canvas with no context draws pixels as (0,0,0,0), and does not leave the pixels unchanged.
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("drawImage() of a canvas with no context draws pixels as (0,0,0,0), and does not leave the pixels unchanged.");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+
+ctx.fillStyle = 'rgba(0, 255, 255, 0.5)';
+ctx.fillRect(0, 0, 100, 50);
+ctx.globalCompositeOperation = 'destination-atop';
+var offscreenCanvas2 = new OffscreenCanvas(100, 50);
+ctx.drawImage(offscreenCanvas2, 0, 0);
+_assertPixelApprox(canvas, 50,25, 0,0,0,0, 5);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.uncovered.nocontext.destination-in.html b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.uncovered.nocontext.destination-in.html
new file mode 100644
index 0000000000..b41c4b749c
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.uncovered.nocontext.destination-in.html
@@ -0,0 +1,33 @@
+
+
+OffscreenCanvas test: 2d.composite.uncovered.nocontext.destination-in
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.composite.uncovered.nocontext.destination-in
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              drawImage() of a canvas with no context draws pixels as (0,0,0,0), and does not leave the pixels unchanged.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.uncovered.nocontext.destination-in.worker.js b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.uncovered.nocontext.destination-in.worker.js
new file mode 100644
index 0000000000..979a0849e8
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.uncovered.nocontext.destination-in.worker.js
@@ -0,0 +1,29 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.composite.uncovered.nocontext.destination-in
+// Description:drawImage() of a canvas with no context draws pixels as (0,0,0,0), and does not leave the pixels unchanged.
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("drawImage() of a canvas with no context draws pixels as (0,0,0,0), and does not leave the pixels unchanged.");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+
+ctx.fillStyle = 'rgba(0, 255, 255, 0.5)';
+ctx.fillRect(0, 0, 100, 50);
+ctx.globalCompositeOperation = 'destination-in';
+var offscreenCanvas2 = new OffscreenCanvas(100, 50);
+ctx.drawImage(offscreenCanvas2, 0, 0);
+_assertPixelApprox(canvas, 50,25, 0,0,0,0, 5);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.uncovered.nocontext.source-in.html b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.uncovered.nocontext.source-in.html
new file mode 100644
index 0000000000..99aeefbb6a
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.uncovered.nocontext.source-in.html
@@ -0,0 +1,33 @@
+
+
+OffscreenCanvas test: 2d.composite.uncovered.nocontext.source-in
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.composite.uncovered.nocontext.source-in
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              drawImage() of a canvas with no context draws pixels as (0,0,0,0), and does not leave the pixels unchanged.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.uncovered.nocontext.source-in.worker.js b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.uncovered.nocontext.source-in.worker.js
new file mode 100644
index 0000000000..55596f859d
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.uncovered.nocontext.source-in.worker.js
@@ -0,0 +1,29 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.composite.uncovered.nocontext.source-in
+// Description:drawImage() of a canvas with no context draws pixels as (0,0,0,0), and does not leave the pixels unchanged.
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("drawImage() of a canvas with no context draws pixels as (0,0,0,0), and does not leave the pixels unchanged.");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+
+ctx.fillStyle = 'rgba(0, 255, 255, 0.5)';
+ctx.fillRect(0, 0, 100, 50);
+ctx.globalCompositeOperation = 'source-in';
+var offscreenCanvas2 = new OffscreenCanvas(100, 50);
+ctx.drawImage(offscreenCanvas2, 0, 0);
+_assertPixelApprox(canvas, 50,25, 0,0,0,0, 5);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.uncovered.nocontext.source-out.html b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.uncovered.nocontext.source-out.html
new file mode 100644
index 0000000000..0dfd4ae0d0
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.uncovered.nocontext.source-out.html
@@ -0,0 +1,33 @@
+
+
+OffscreenCanvas test: 2d.composite.uncovered.nocontext.source-out
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.composite.uncovered.nocontext.source-out
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              drawImage() of a canvas with no context draws pixels as (0,0,0,0), and does not leave the pixels unchanged.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.uncovered.nocontext.source-out.worker.js b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.uncovered.nocontext.source-out.worker.js
new file mode 100644
index 0000000000..f0820e03fe
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.uncovered.nocontext.source-out.worker.js
@@ -0,0 +1,29 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.composite.uncovered.nocontext.source-out
+// Description:drawImage() of a canvas with no context draws pixels as (0,0,0,0), and does not leave the pixels unchanged.
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("drawImage() of a canvas with no context draws pixels as (0,0,0,0), and does not leave the pixels unchanged.");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+
+ctx.fillStyle = 'rgba(0, 255, 255, 0.5)';
+ctx.fillRect(0, 0, 100, 50);
+ctx.globalCompositeOperation = 'source-out';
+var offscreenCanvas2 = new OffscreenCanvas(100, 50);
+ctx.drawImage(offscreenCanvas2, 0, 0);
+_assertPixelApprox(canvas, 50,25, 0,0,0,0, 5);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.uncovered.pattern.copy.html b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.uncovered.pattern.copy.html
new file mode 100644
index 0000000000..244cc82f55
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.uncovered.pattern.copy.html
@@ -0,0 +1,45 @@
+
+
+OffscreenCanvas test: 2d.composite.uncovered.pattern.copy
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.composite.uncovered.pattern.copy
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Pattern fill() draws pixels not covered by the source object as (0,0,0,0), and does not leave the pixels unchanged.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.uncovered.pattern.copy.worker.js b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.uncovered.pattern.copy.worker.js
new file mode 100644
index 0000000000..3aeddac219
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.uncovered.pattern.copy.worker.js
@@ -0,0 +1,41 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.composite.uncovered.pattern.copy
+// Description:Pattern fill() draws pixels not covered by the source object as (0,0,0,0), and does not leave the pixels unchanged.
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("Pattern fill() draws pixels not covered by the source object as (0,0,0,0), and does not leave the pixels unchanged.");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+
+ctx.fillStyle = 'rgba(0, 255, 255, 0.5)';
+ctx.fillRect(0, 0, 100, 50);
+ctx.globalCompositeOperation = 'copy';
+var promise = new Promise(function(resolve, reject) {
+    var xhr = new XMLHttpRequest();
+    xhr.open("GET", '/images/yellow.png');
+    xhr.responseType = 'blob';
+    xhr.send();
+    xhr.onload = function() {
+        resolve(xhr.response);
+    };
+});
+promise.then(function(response) {
+    createImageBitmap(response).then(bitmap => {
+        ctx.fillStyle = ctx.createPattern(bitmap, 'no-repeat');
+        ctx.fillRect(0, 50, 100, 50);
+        _assertPixelApprox(canvas, 50,25, 0,0,0,0, 5);
+    }, t_fail);
+}).then(t_pass, t_fail);
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.uncovered.pattern.destination-atop.html b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.uncovered.pattern.destination-atop.html
new file mode 100644
index 0000000000..3624f1baa9
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.uncovered.pattern.destination-atop.html
@@ -0,0 +1,45 @@
+
+
+OffscreenCanvas test: 2d.composite.uncovered.pattern.destination-atop
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.composite.uncovered.pattern.destination-atop
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Pattern fill() draws pixels not covered by the source object as (0,0,0,0), and does not leave the pixels unchanged.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.uncovered.pattern.destination-atop.worker.js b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.uncovered.pattern.destination-atop.worker.js
new file mode 100644
index 0000000000..86aaf9fb52
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.uncovered.pattern.destination-atop.worker.js
@@ -0,0 +1,41 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.composite.uncovered.pattern.destination-atop
+// Description:Pattern fill() draws pixels not covered by the source object as (0,0,0,0), and does not leave the pixels unchanged.
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("Pattern fill() draws pixels not covered by the source object as (0,0,0,0), and does not leave the pixels unchanged.");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+
+ctx.fillStyle = 'rgba(0, 255, 255, 0.5)';
+ctx.fillRect(0, 0, 100, 50);
+ctx.globalCompositeOperation = 'destination-atop';
+var promise = new Promise(function(resolve, reject) {
+    var xhr = new XMLHttpRequest();
+    xhr.open("GET", '/images/yellow.png');
+    xhr.responseType = 'blob';
+    xhr.send();
+    xhr.onload = function() {
+        resolve(xhr.response);
+    };
+});
+promise.then(function(response) {
+    createImageBitmap(response).then(bitmap => {
+        ctx.fillStyle = ctx.createPattern(bitmap, 'no-repeat');
+        ctx.fillRect(0, 50, 100, 50);
+        _assertPixelApprox(canvas, 50,25, 0,0,0,0, 5);
+    }, t_fail);
+}).then(t_pass, t_fail);
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.uncovered.pattern.destination-in.html b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.uncovered.pattern.destination-in.html
new file mode 100644
index 0000000000..21990f1ae0
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.uncovered.pattern.destination-in.html
@@ -0,0 +1,45 @@
+
+
+OffscreenCanvas test: 2d.composite.uncovered.pattern.destination-in
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.composite.uncovered.pattern.destination-in
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Pattern fill() draws pixels not covered by the source object as (0,0,0,0), and does not leave the pixels unchanged.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.uncovered.pattern.destination-in.worker.js b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.uncovered.pattern.destination-in.worker.js
new file mode 100644
index 0000000000..184efcd71e
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.uncovered.pattern.destination-in.worker.js
@@ -0,0 +1,41 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.composite.uncovered.pattern.destination-in
+// Description:Pattern fill() draws pixels not covered by the source object as (0,0,0,0), and does not leave the pixels unchanged.
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("Pattern fill() draws pixels not covered by the source object as (0,0,0,0), and does not leave the pixels unchanged.");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+
+ctx.fillStyle = 'rgba(0, 255, 255, 0.5)';
+ctx.fillRect(0, 0, 100, 50);
+ctx.globalCompositeOperation = 'destination-in';
+var promise = new Promise(function(resolve, reject) {
+    var xhr = new XMLHttpRequest();
+    xhr.open("GET", '/images/yellow.png');
+    xhr.responseType = 'blob';
+    xhr.send();
+    xhr.onload = function() {
+        resolve(xhr.response);
+    };
+});
+promise.then(function(response) {
+    createImageBitmap(response).then(bitmap => {
+        ctx.fillStyle = ctx.createPattern(bitmap, 'no-repeat');
+        ctx.fillRect(0, 50, 100, 50);
+        _assertPixelApprox(canvas, 50,25, 0,0,0,0, 5);
+    }, t_fail);
+}).then(t_pass, t_fail);
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.uncovered.pattern.source-in.html b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.uncovered.pattern.source-in.html
new file mode 100644
index 0000000000..f95da543c9
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.uncovered.pattern.source-in.html
@@ -0,0 +1,45 @@
+
+
+OffscreenCanvas test: 2d.composite.uncovered.pattern.source-in
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.composite.uncovered.pattern.source-in
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Pattern fill() draws pixels not covered by the source object as (0,0,0,0), and does not leave the pixels unchanged.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.uncovered.pattern.source-in.worker.js b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.uncovered.pattern.source-in.worker.js
new file mode 100644
index 0000000000..61c798b7aa
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.uncovered.pattern.source-in.worker.js
@@ -0,0 +1,41 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.composite.uncovered.pattern.source-in
+// Description:Pattern fill() draws pixels not covered by the source object as (0,0,0,0), and does not leave the pixels unchanged.
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("Pattern fill() draws pixels not covered by the source object as (0,0,0,0), and does not leave the pixels unchanged.");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+
+ctx.fillStyle = 'rgba(0, 255, 255, 0.5)';
+ctx.fillRect(0, 0, 100, 50);
+ctx.globalCompositeOperation = 'source-in';
+var promise = new Promise(function(resolve, reject) {
+    var xhr = new XMLHttpRequest();
+    xhr.open("GET", '/images/yellow.png');
+    xhr.responseType = 'blob';
+    xhr.send();
+    xhr.onload = function() {
+        resolve(xhr.response);
+    };
+});
+promise.then(function(response) {
+    createImageBitmap(response).then(bitmap => {
+        ctx.fillStyle = ctx.createPattern(bitmap, 'no-repeat');
+        ctx.fillRect(0, 50, 100, 50);
+        _assertPixelApprox(canvas, 50,25, 0,0,0,0, 5);
+    }, t_fail);
+}).then(t_pass, t_fail);
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.uncovered.pattern.source-out.html b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.uncovered.pattern.source-out.html
new file mode 100644
index 0000000000..4eb6ba519f
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.uncovered.pattern.source-out.html
@@ -0,0 +1,45 @@
+
+
+OffscreenCanvas test: 2d.composite.uncovered.pattern.source-out
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.composite.uncovered.pattern.source-out
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Pattern fill() draws pixels not covered by the source object as (0,0,0,0), and does not leave the pixels unchanged.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.uncovered.pattern.source-out.worker.js b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.uncovered.pattern.source-out.worker.js
new file mode 100644
index 0000000000..5827c7a1d7
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.uncovered.pattern.source-out.worker.js
@@ -0,0 +1,41 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.composite.uncovered.pattern.source-out
+// Description:Pattern fill() draws pixels not covered by the source object as (0,0,0,0), and does not leave the pixels unchanged.
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("Pattern fill() draws pixels not covered by the source object as (0,0,0,0), and does not leave the pixels unchanged.");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+
+ctx.fillStyle = 'rgba(0, 255, 255, 0.5)';
+ctx.fillRect(0, 0, 100, 50);
+ctx.globalCompositeOperation = 'source-out';
+var promise = new Promise(function(resolve, reject) {
+    var xhr = new XMLHttpRequest();
+    xhr.open("GET", '/images/yellow.png');
+    xhr.responseType = 'blob';
+    xhr.send();
+    xhr.onload = function() {
+        resolve(xhr.response);
+    };
+});
+promise.then(function(response) {
+    createImageBitmap(response).then(bitmap => {
+        ctx.fillStyle = ctx.createPattern(bitmap, 'no-repeat');
+        ctx.fillRect(0, 50, 100, 50);
+        _assertPixelApprox(canvas, 50,25, 0,0,0,0, 5);
+    }, t_fail);
+}).then(t_pass, t_fail);
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/conformance-requirements/2d.conformance.requirements.basics.html b/testing/web-platform/tests/html/canvas/offscreen/conformance-requirements/2d.conformance.requirements.basics.html
new file mode 100644
index 0000000000..e754e6c6ba
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/conformance-requirements/2d.conformance.requirements.basics.html
@@ -0,0 +1,62 @@
+
+
+OffscreenCanvas test: 2d.conformance.requirements.basics
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.conformance.requirements.basics
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              void methods return undefined
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Defined in "Web IDL" (draft)
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/conformance-requirements/2d.conformance.requirements.basics.worker.js b/testing/web-platform/tests/html/canvas/offscreen/conformance-requirements/2d.conformance.requirements.basics.worker.js
new file mode 100644
index 0000000000..b16a39fd3c
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/conformance-requirements/2d.conformance.requirements.basics.worker.js
@@ -0,0 +1,57 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.conformance.requirements.basics
+// Description:void methods return undefined
+// Note:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Defined in "Web IDL" (draft)
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("void methods return undefined");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  _assertSame(ctx.save(), undefined, "ctx.save()", "undefined");
+  _assertSame(ctx.restore(), undefined, "ctx.restore()", "undefined");
+  _assertSame(ctx.scale(1, 1), undefined, "ctx.scale(1, 1)", "undefined");
+  _assertSame(ctx.rotate(0), undefined, "ctx.rotate(0)", "undefined");
+  _assertSame(ctx.translate(0, 0), undefined, "ctx.translate(0, 0)", "undefined");
+  if (ctx.transform) { // (avoid spurious failures, since the aim here is not to test that all features are supported)
+      _assertSame(ctx.transform(1, 0, 0, 1, 0, 0), undefined, "ctx.transform(1, 0, 0, 1, 0, 0)", "undefined");
+  }
+  if (ctx.setTransform) {
+      _assertSame(ctx.setTransform(1, 0, 0, 1, 0, 0), undefined, "ctx.setTransform(1, 0, 0, 1, 0, 0)", "undefined");
+      _assertSame(ctx.setTransform(), undefined, "ctx.setTransform()", "undefined");
+  }
+  _assertSame(ctx.clearRect(0, 0, 0, 0), undefined, "ctx.clearRect(0, 0, 0, 0)", "undefined");
+  _assertSame(ctx.fillRect(0, 0, 0, 0), undefined, "ctx.fillRect(0, 0, 0, 0)", "undefined");
+  _assertSame(ctx.strokeRect(0, 0, 0, 0), undefined, "ctx.strokeRect(0, 0, 0, 0)", "undefined");
+  _assertSame(ctx.beginPath(), undefined, "ctx.beginPath()", "undefined");
+  _assertSame(ctx.closePath(), undefined, "ctx.closePath()", "undefined");
+  _assertSame(ctx.moveTo(0, 0), undefined, "ctx.moveTo(0, 0)", "undefined");
+  _assertSame(ctx.lineTo(0, 0), undefined, "ctx.lineTo(0, 0)", "undefined");
+  _assertSame(ctx.quadraticCurveTo(0, 0, 0, 0), undefined, "ctx.quadraticCurveTo(0, 0, 0, 0)", "undefined");
+  _assertSame(ctx.bezierCurveTo(0, 0, 0, 0, 0, 0), undefined, "ctx.bezierCurveTo(0, 0, 0, 0, 0, 0)", "undefined");
+  _assertSame(ctx.arcTo(0, 0, 0, 0, 1), undefined, "ctx.arcTo(0, 0, 0, 0, 1)", "undefined");
+  _assertSame(ctx.rect(0, 0, 0, 0), undefined, "ctx.rect(0, 0, 0, 0)", "undefined");
+  _assertSame(ctx.arc(0, 0, 1, 0, 0, true), undefined, "ctx.arc(0, 0, 1, 0, 0, true)", "undefined");
+  _assertSame(ctx.fill(), undefined, "ctx.fill()", "undefined");
+  _assertSame(ctx.stroke(), undefined, "ctx.stroke()", "undefined");
+  _assertSame(ctx.clip(), undefined, "ctx.clip()", "undefined");
+  if (ctx.fillText) {
+      _assertSame(ctx.fillText('test', 0, 0), undefined, "ctx.fillText('test', 0, 0)", "undefined");
+      _assertSame(ctx.strokeText('test', 0, 0), undefined, "ctx.strokeText('test', 0, 0)", "undefined");
+  }
+  if (ctx.putImageData) {
+      _assertSame(ctx.putImageData(ctx.getImageData(0, 0, 1, 1), 0, 0), undefined, "ctx.putImageData(ctx.getImageData(0, 0, 1, 1), 0, 0)", "undefined");
+  }
+  _assertSame(ctx.drawImage(canvas, 0, 0, 1, 1, 0, 0, 0, 0), undefined, "ctx.drawImage(canvas, 0, 0, 1, 1, 0, 0, 0, 0)", "undefined");
+  _assertSame(ctx.createLinearGradient(0, 0, 0, 0).addColorStop(0, 'white'), undefined, "ctx.createLinearGradient(0, 0, 0, 0).addColorStop(0, 'white')", "undefined");
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/conformance-requirements/2d.conformance.requirements.missingargs.html b/testing/web-platform/tests/html/canvas/offscreen/conformance-requirements/2d.conformance.requirements.missingargs.html
new file mode 100644
index 0000000000..fe28a68e90
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/conformance-requirements/2d.conformance.requirements.missingargs.html
@@ -0,0 +1,141 @@
+
+
+OffscreenCanvas test: 2d.conformance.requirements.missingargs
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.conformance.requirements.missingargs
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Missing arguments cause TypeError
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/conformance-requirements/2d.conformance.requirements.missingargs.worker.js b/testing/web-platform/tests/html/canvas/offscreen/conformance-requirements/2d.conformance.requirements.missingargs.worker.js
new file mode 100644
index 0000000000..f249fcb881
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/conformance-requirements/2d.conformance.requirements.missingargs.worker.js
@@ -0,0 +1,136 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.conformance.requirements.missingargs
+// Description:Missing arguments cause TypeError
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("Missing arguments cause TypeError");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  assert_throws_js(TypeError, function() { ctx.scale(); });
+  assert_throws_js(TypeError, function() { ctx.scale(1); });
+  assert_throws_js(TypeError, function() { ctx.rotate(); });
+  assert_throws_js(TypeError, function() { ctx.translate(); });
+  assert_throws_js(TypeError, function() { ctx.translate(0); });
+  if (ctx.transform) { // (avoid spurious failures, since the aim here is not to test that all features are supported)
+      assert_throws_js(TypeError, function() { ctx.transform(); });
+      assert_throws_js(TypeError, function() { ctx.transform(1); });
+      assert_throws_js(TypeError, function() { ctx.transform(1, 0); });
+      assert_throws_js(TypeError, function() { ctx.transform(1, 0, 0); });
+      assert_throws_js(TypeError, function() { ctx.transform(1, 0, 0, 1); });
+      assert_throws_js(TypeError, function() { ctx.transform(1, 0, 0, 1, 0); });
+  }
+  if (ctx.setTransform) {
+      assert_throws_js(TypeError, function() { ctx.setTransform(1); });
+      assert_throws_js(TypeError, function() { ctx.setTransform(1, 0); });
+      assert_throws_js(TypeError, function() { ctx.setTransform(1, 0, 0); });
+      assert_throws_js(TypeError, function() { ctx.setTransform(1, 0, 0, 1); });
+      assert_throws_js(TypeError, function() { ctx.setTransform(1, 0, 0, 1, 0); });
+  }
+  assert_throws_js(TypeError, function() { ctx.createLinearGradient(); });
+  assert_throws_js(TypeError, function() { ctx.createLinearGradient(0); });
+  assert_throws_js(TypeError, function() { ctx.createLinearGradient(0, 0); });
+  assert_throws_js(TypeError, function() { ctx.createLinearGradient(0, 0, 1); });
+  assert_throws_js(TypeError, function() { ctx.createRadialGradient(); });
+  assert_throws_js(TypeError, function() { ctx.createRadialGradient(0); });
+  assert_throws_js(TypeError, function() { ctx.createRadialGradient(0, 0); });
+  assert_throws_js(TypeError, function() { ctx.createRadialGradient(0, 0, 1); });
+  assert_throws_js(TypeError, function() { ctx.createRadialGradient(0, 0, 1, 0); });
+  assert_throws_js(TypeError, function() { ctx.createRadialGradient(0, 0, 1, 0, 0); });
+  assert_throws_js(TypeError, function() { ctx.createPattern(canvas); });
+  assert_throws_js(TypeError, function() { ctx.clearRect(); });
+  assert_throws_js(TypeError, function() { ctx.clearRect(0); });
+  assert_throws_js(TypeError, function() { ctx.clearRect(0, 0); });
+  assert_throws_js(TypeError, function() { ctx.clearRect(0, 0, 0); });
+  assert_throws_js(TypeError, function() { ctx.fillRect(); });
+  assert_throws_js(TypeError, function() { ctx.fillRect(0); });
+  assert_throws_js(TypeError, function() { ctx.fillRect(0, 0); });
+  assert_throws_js(TypeError, function() { ctx.fillRect(0, 0, 0); });
+  assert_throws_js(TypeError, function() { ctx.strokeRect(); });
+  assert_throws_js(TypeError, function() { ctx.strokeRect(0); });
+  assert_throws_js(TypeError, function() { ctx.strokeRect(0, 0); });
+  assert_throws_js(TypeError, function() { ctx.strokeRect(0, 0, 0); });
+  assert_throws_js(TypeError, function() { ctx.moveTo(); });
+  assert_throws_js(TypeError, function() { ctx.moveTo(0); });
+  assert_throws_js(TypeError, function() { ctx.lineTo(); });
+  assert_throws_js(TypeError, function() { ctx.lineTo(0); });
+  assert_throws_js(TypeError, function() { ctx.quadraticCurveTo(); });
+  assert_throws_js(TypeError, function() { ctx.quadraticCurveTo(0); });
+  assert_throws_js(TypeError, function() { ctx.quadraticCurveTo(0, 0); });
+  assert_throws_js(TypeError, function() { ctx.quadraticCurveTo(0, 0, 0); });
+  assert_throws_js(TypeError, function() { ctx.bezierCurveTo(); });
+  assert_throws_js(TypeError, function() { ctx.bezierCurveTo(0); });
+  assert_throws_js(TypeError, function() { ctx.bezierCurveTo(0, 0); });
+  assert_throws_js(TypeError, function() { ctx.bezierCurveTo(0, 0, 0); });
+  assert_throws_js(TypeError, function() { ctx.bezierCurveTo(0, 0, 0, 0); });
+  assert_throws_js(TypeError, function() { ctx.bezierCurveTo(0, 0, 0, 0, 0); });
+  assert_throws_js(TypeError, function() { ctx.arcTo(); });
+  assert_throws_js(TypeError, function() { ctx.arcTo(0); });
+  assert_throws_js(TypeError, function() { ctx.arcTo(0, 0); });
+  assert_throws_js(TypeError, function() { ctx.arcTo(0, 0, 0); });
+  assert_throws_js(TypeError, function() { ctx.arcTo(0, 0, 0, 0); });
+  assert_throws_js(TypeError, function() { ctx.rect(); });
+  assert_throws_js(TypeError, function() { ctx.rect(0); });
+  assert_throws_js(TypeError, function() { ctx.rect(0, 0); });
+  assert_throws_js(TypeError, function() { ctx.rect(0, 0, 0); });
+  assert_throws_js(TypeError, function() { ctx.arc(); });
+  assert_throws_js(TypeError, function() { ctx.arc(0); });
+  assert_throws_js(TypeError, function() { ctx.arc(0, 0); });
+  assert_throws_js(TypeError, function() { ctx.arc(0, 0, 1); });
+  assert_throws_js(TypeError, function() { ctx.arc(0, 0, 1, 0); });
+  // (6th argument to arc is optional)
+  if (ctx.isPointInPath) {
+      assert_throws_js(TypeError, function() { ctx.isPointInPath(); });
+      assert_throws_js(TypeError, function() { ctx.isPointInPath(0); });
+  }
+  if (ctx.drawFocusRing) {
+      assert_throws_js(TypeError, function() { ctx.drawFocusRing(); });
+      assert_throws_js(TypeError, function() { ctx.drawFocusRing(canvas); });
+      assert_throws_js(TypeError, function() { ctx.drawFocusRing(canvas, 0); });
+  }
+  if (ctx.fillText) {
+      assert_throws_js(TypeError, function() { ctx.fillText(); });
+      assert_throws_js(TypeError, function() { ctx.fillText('test'); });
+      assert_throws_js(TypeError, function() { ctx.fillText('test', 0); });
+      assert_throws_js(TypeError, function() { ctx.strokeText(); });
+      assert_throws_js(TypeError, function() { ctx.strokeText('test'); });
+      assert_throws_js(TypeError, function() { ctx.strokeText('test', 0); });
+      assert_throws_js(TypeError, function() { ctx.measureText(); });
+  }
+  assert_throws_js(TypeError, function() { ctx.drawImage(); });
+  assert_throws_js(TypeError, function() { ctx.drawImage(canvas); });
+  assert_throws_js(TypeError, function() { ctx.drawImage(canvas, 0); });
+  // TODO: n >= 3 args on drawImage could be either a valid overload,
+  // or too few for another overload, or too many for another
+  // overload - what should happen?
+  if (ctx.createImageData) {
+      assert_throws_js(TypeError, function() { ctx.createImageData(); });
+      assert_throws_js(TypeError, function() { ctx.createImageData(1); });
+  }
+  if (ctx.getImageData) {
+      assert_throws_js(TypeError, function() { ctx.getImageData(); });
+      assert_throws_js(TypeError, function() { ctx.getImageData(0); });
+      assert_throws_js(TypeError, function() { ctx.getImageData(0, 0); });
+      assert_throws_js(TypeError, function() { ctx.getImageData(0, 0, 1); });
+  }
+  if (ctx.putImageData) {
+      var imgdata = ctx.getImageData(0, 0, 1, 1);
+      assert_throws_js(TypeError, function() { ctx.putImageData(); });
+      assert_throws_js(TypeError, function() { ctx.putImageData(imgdata); });
+      assert_throws_js(TypeError, function() { ctx.putImageData(imgdata, 0); });
+  }
+  var g = ctx.createLinearGradient(0, 0, 0, 0);
+  assert_throws_js(TypeError, function() { g.addColorStop(); });
+  assert_throws_js(TypeError, function() { g.addColorStop(0); });
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/drawing-images-to-the-canvas/2d.drawImage.3arg.html b/testing/web-platform/tests/html/canvas/offscreen/drawing-images-to-the-canvas/2d.drawImage.3arg.html
new file mode 100644
index 0000000000..7f1f66654d
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/drawing-images-to-the-canvas/2d.drawImage.3arg.html
@@ -0,0 +1,37 @@
+
+
+OffscreenCanvas test: 2d.drawImage.3arg
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.drawImage.3arg
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/drawing-images-to-the-canvas/2d.drawImage.3arg.worker.js b/testing/web-platform/tests/html/canvas/offscreen/drawing-images-to-the-canvas/2d.drawImage.3arg.worker.js
new file mode 100644
index 0000000000..b2f860bc60
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/drawing-images-to-the-canvas/2d.drawImage.3arg.worker.js
@@ -0,0 +1,33 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.drawImage.3arg
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+promise_test(async t => {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  const response_red = await fetch('/images/red.png');
+  const blob_red = await response_red.blob();
+  const bitmap_red = await createImageBitmap(blob_red);
+
+  const response_green = await fetch('/images/green.png');
+  const blob_green = await response_green.blob();
+  const bitmap_green = await createImageBitmap(blob_green);
+
+  ctx.drawImage(bitmap_green, 0, 0);
+  ctx.drawImage(bitmap_red, -100, 0);
+  ctx.drawImage(bitmap_red, 100, 0);
+  ctx.drawImage(bitmap_red, 0, -50);
+  ctx.drawImage(bitmap_red, 0, 50);
+  _assertPixelApprox(canvas, 0,0, 0,255,0,255, 2);
+  _assertPixelApprox(canvas, 99,0, 0,255,0,255, 2);
+  _assertPixelApprox(canvas, 0,49, 0,255,0,255, 2);
+  _assertPixelApprox(canvas, 99,49, 0,255,0,255, 2);
+  t.done();
+}, "");
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/drawing-images-to-the-canvas/2d.drawImage.5arg.html b/testing/web-platform/tests/html/canvas/offscreen/drawing-images-to-the-canvas/2d.drawImage.5arg.html
new file mode 100644
index 0000000000..f7bf0568c4
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/drawing-images-to-the-canvas/2d.drawImage.5arg.html
@@ -0,0 +1,38 @@
+
+
+OffscreenCanvas test: 2d.drawImage.5arg
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.drawImage.5arg
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/drawing-images-to-the-canvas/2d.drawImage.5arg.worker.js b/testing/web-platform/tests/html/canvas/offscreen/drawing-images-to-the-canvas/2d.drawImage.5arg.worker.js
new file mode 100644
index 0000000000..f725acf011
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/drawing-images-to-the-canvas/2d.drawImage.5arg.worker.js
@@ -0,0 +1,34 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.drawImage.5arg
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+promise_test(async t => {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#f00';
+  ctx.fillRect(0, 0, 100, 50);
+  const response_red = await fetch('/images/red.png');
+  const blob_red = await response_red.blob();
+  const bitmap_red = await createImageBitmap(blob_red);
+
+  const response_green = await fetch('/images/green.png');
+  const blob_green = await response_green.blob();
+  const bitmap_green = await createImageBitmap(blob_green);
+
+  ctx.drawImage(bitmap_green, 50, 0, 50, 50);
+  ctx.drawImage(bitmap_red, 0, 0, 50, 50);
+  ctx.fillStyle = '#0f0';
+  ctx.fillRect(0, 0, 50, 50);
+  _assertPixelApprox(canvas, 0,0, 0,255,0,255, 2);
+  _assertPixelApprox(canvas, 99,0, 0,255,0,255, 2);
+  _assertPixelApprox(canvas, 0,49, 0,255,0,255, 2);
+  _assertPixelApprox(canvas, 99,49, 0,255,0,255, 2);
+  t.done();
+}, "");
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/drawing-images-to-the-canvas/2d.drawImage.9arg.basic.html b/testing/web-platform/tests/html/canvas/offscreen/drawing-images-to-the-canvas/2d.drawImage.9arg.basic.html
new file mode 100644
index 0000000000..47e442e23e
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/drawing-images-to-the-canvas/2d.drawImage.9arg.basic.html
@@ -0,0 +1,31 @@
+
+
+OffscreenCanvas test: 2d.drawImage.9arg.basic
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.drawImage.9arg.basic
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/drawing-images-to-the-canvas/2d.drawImage.9arg.basic.worker.js b/testing/web-platform/tests/html/canvas/offscreen/drawing-images-to-the-canvas/2d.drawImage.9arg.basic.worker.js
new file mode 100644
index 0000000000..b2d6f7d860
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/drawing-images-to-the-canvas/2d.drawImage.9arg.basic.worker.js
@@ -0,0 +1,27 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.drawImage.9arg.basic
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+promise_test(async t => {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#f00';
+  ctx.fillRect(0, 0, 100, 50);
+  const response = await fetch('/images/green.png');
+  const blob = await response.blob();
+  const bitmap = await createImageBitmap(blob);
+
+  ctx.drawImage(bitmap, 0, 0, 100, 50, 0, 0, 100, 50);
+  _assertPixelApprox(canvas, 0,0, 0,255,0,255, 2);
+  _assertPixelApprox(canvas, 99,0, 0,255,0,255, 2);
+  _assertPixelApprox(canvas, 0,49, 0,255,0,255, 2);
+  _assertPixelApprox(canvas, 99,49, 0,255,0,255, 2);
+  t.done();
+}, "");
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/drawing-images-to-the-canvas/2d.drawImage.9arg.destpos.html b/testing/web-platform/tests/html/canvas/offscreen/drawing-images-to-the-canvas/2d.drawImage.9arg.destpos.html
new file mode 100644
index 0000000000..5e0f3f1088
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/drawing-images-to-the-canvas/2d.drawImage.9arg.destpos.html
@@ -0,0 +1,37 @@
+
+
+OffscreenCanvas test: 2d.drawImage.9arg.destpos
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.drawImage.9arg.destpos
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/drawing-images-to-the-canvas/2d.drawImage.9arg.destpos.worker.js b/testing/web-platform/tests/html/canvas/offscreen/drawing-images-to-the-canvas/2d.drawImage.9arg.destpos.worker.js
new file mode 100644
index 0000000000..380d526f9b
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/drawing-images-to-the-canvas/2d.drawImage.9arg.destpos.worker.js
@@ -0,0 +1,33 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.drawImage.9arg.destpos
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+promise_test(async t => {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  const response_red = await fetch('/images/red.png');
+  const blob_red = await response_red.blob();
+  const bitmap_red = await createImageBitmap(blob_red);
+
+  const response_green = await fetch('/images/green.png');
+  const blob_green = await response_green.blob();
+  const bitmap_green = await createImageBitmap(blob_green);
+
+  ctx.drawImage(bitmap_green, 0, 0, 100, 50, 0, 0, 100, 50);
+  ctx.drawImage(bitmap_green, 0, 0, 100, 50, -100, 0, 100, 50);
+  ctx.drawImage(bitmap_red, 0, 0, 100, 50, 100, 0, 100, 50);
+  ctx.drawImage(bitmap_red, 0, 0, 100, 50, 0, -50, 100, 50);
+  ctx.drawImage(bitmap_red, 0, 0, 100, 50, 0, 50, 100, 50);
+  _assertPixelApprox(canvas, 0,0, 0,255,0,255, 2);
+  _assertPixelApprox(canvas, 99,0, 0,255,0,255, 2);
+  _assertPixelApprox(canvas, 0,49, 0,255,0,255, 2);
+  _assertPixelApprox(canvas, 99,49, 0,255,0,255, 2);
+  t.done();
+}, "");
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/drawing-images-to-the-canvas/2d.drawImage.9arg.destsize.html b/testing/web-platform/tests/html/canvas/offscreen/drawing-images-to-the-canvas/2d.drawImage.9arg.destsize.html
new file mode 100644
index 0000000000..93b587a44f
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/drawing-images-to-the-canvas/2d.drawImage.9arg.destsize.html
@@ -0,0 +1,39 @@
+
+
+OffscreenCanvas test: 2d.drawImage.9arg.destsize
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.drawImage.9arg.destsize
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/drawing-images-to-the-canvas/2d.drawImage.9arg.destsize.worker.js b/testing/web-platform/tests/html/canvas/offscreen/drawing-images-to-the-canvas/2d.drawImage.9arg.destsize.worker.js
new file mode 100644
index 0000000000..76e3e8baaf
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/drawing-images-to-the-canvas/2d.drawImage.9arg.destsize.worker.js
@@ -0,0 +1,35 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.drawImage.9arg.destsize
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+promise_test(async t => {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  const response_red = await fetch('/images/red.png');
+  const blob_red = await response_red.blob();
+  const bitmap_red = await createImageBitmap(blob_red);
+
+  const response_green = await fetch('/images/green.png');
+  const blob_green = await response_green.blob();
+  const bitmap_green = await createImageBitmap(blob_green);
+
+  ctx.fillStyle = '#f00';
+  ctx.fillRect(0, 0, 100, 50);
+  ctx.drawImage(bitmap_green, 1, 1, 1, 1, 0, 0, 100, 50);
+  ctx.drawImage(bitmap_red, 0, 0, 100, 50, -50, 0, 50, 50);
+  ctx.drawImage(bitmap_red, 0, 0, 100, 50, 100, 0, 50, 50);
+  ctx.drawImage(bitmap_red, 0, 0, 100, 50, 0, -25, 100, 25);
+  ctx.drawImage(bitmap_red, 0, 0, 100, 50, 0, 50, 100, 25);
+  _assertPixelApprox(canvas, 0,0, 0,255,0,255, 2);
+  _assertPixelApprox(canvas, 99,0, 0,255,0,255, 2);
+  _assertPixelApprox(canvas, 0,49, 0,255,0,255, 2);
+  _assertPixelApprox(canvas, 99,49, 0,255,0,255, 2);
+  t.done();
+}, "");
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/drawing-images-to-the-canvas/2d.drawImage.9arg.sourcepos.html b/testing/web-platform/tests/html/canvas/offscreen/drawing-images-to-the-canvas/2d.drawImage.9arg.sourcepos.html
new file mode 100644
index 0000000000..e822ab43fa
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/drawing-images-to-the-canvas/2d.drawImage.9arg.sourcepos.html
@@ -0,0 +1,30 @@
+
+
+OffscreenCanvas test: 2d.drawImage.9arg.sourcepos
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.drawImage.9arg.sourcepos
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/drawing-images-to-the-canvas/2d.drawImage.9arg.sourcepos.worker.js b/testing/web-platform/tests/html/canvas/offscreen/drawing-images-to-the-canvas/2d.drawImage.9arg.sourcepos.worker.js
new file mode 100644
index 0000000000..d3525435fa
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/drawing-images-to-the-canvas/2d.drawImage.9arg.sourcepos.worker.js
@@ -0,0 +1,26 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.drawImage.9arg.sourcepos
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+promise_test(async t => {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#f00';
+  ctx.fillRect(0, 0, 100, 50);
+  const response = await fetch('/images/rgrg-256x256.png');
+  const blob = await response.blob();
+  const bitmap = await createImageBitmap(blob);
+  ctx.drawImage(bitmap, 140, 20, 100, 50, 0, 0, 100, 50);
+  _assertPixelApprox(canvas, 0,0, 0,255,0,255, 2);
+  _assertPixelApprox(canvas, 99,0, 0,255,0,255, 2);
+  _assertPixelApprox(canvas, 0,49, 0,255,0,255, 2);
+  _assertPixelApprox(canvas, 99,49, 0,255,0,255, 2);
+  t.done();
+}, "");
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/drawing-images-to-the-canvas/2d.drawImage.9arg.sourcesize.html b/testing/web-platform/tests/html/canvas/offscreen/drawing-images-to-the-canvas/2d.drawImage.9arg.sourcesize.html
new file mode 100644
index 0000000000..b99ca58768
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/drawing-images-to-the-canvas/2d.drawImage.9arg.sourcesize.html
@@ -0,0 +1,37 @@
+
+
+OffscreenCanvas test: 2d.drawImage.9arg.sourcesize
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.drawImage.9arg.sourcesize
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/drawing-images-to-the-canvas/2d.drawImage.9arg.sourcesize.worker.js b/testing/web-platform/tests/html/canvas/offscreen/drawing-images-to-the-canvas/2d.drawImage.9arg.sourcesize.worker.js
new file mode 100644
index 0000000000..aa15efb705
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/drawing-images-to-the-canvas/2d.drawImage.9arg.sourcesize.worker.js
@@ -0,0 +1,33 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.drawImage.9arg.sourcesize
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+promise_test(async t => {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#f00';
+  ctx.fillRect(0, 0, 100, 50);
+  const response = await fetch('/images/rgrg-256x256.png');
+  const blob = await response.blob();
+  const bitmap = await createImageBitmap(blob);
+  ctx.drawImage(bitmap, 0, 0, 256, 256, 0, 0, 100, 50);
+  ctx.fillStyle = '#0f0';
+  ctx.fillRect(0, 0, 51, 26);
+  ctx.fillRect(49, 24, 51, 26);
+  _assertPixelApprox(canvas, 0,0, 0,255,0,255, 2);
+  _assertPixelApprox(canvas, 99,0, 0,255,0,255, 2);
+  _assertPixelApprox(canvas, 0,49, 0,255,0,255, 2);
+  _assertPixelApprox(canvas, 99,49, 0,255,0,255, 2);
+  _assertPixelApprox(canvas, 20,20, 0,255,0,255, 2);
+  _assertPixelApprox(canvas, 80,20, 0,255,0,255, 2);
+  _assertPixelApprox(canvas, 20,30, 0,255,0,255, 2);
+  _assertPixelApprox(canvas, 80,30, 0,255,0,255, 2);
+  t.done();
+}, "");
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/drawing-images-to-the-canvas/2d.drawImage.alpha.html b/testing/web-platform/tests/html/canvas/offscreen/drawing-images-to-the-canvas/2d.drawImage.alpha.html
new file mode 100644
index 0000000000..a95f3ece7a
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/drawing-images-to-the-canvas/2d.drawImage.alpha.html
@@ -0,0 +1,29 @@
+
+
+OffscreenCanvas test: 2d.drawImage.alpha
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.drawImage.alpha
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/drawing-images-to-the-canvas/2d.drawImage.alpha.worker.js b/testing/web-platform/tests/html/canvas/offscreen/drawing-images-to-the-canvas/2d.drawImage.alpha.worker.js
new file mode 100644
index 0000000000..958a2431b6
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/drawing-images-to-the-canvas/2d.drawImage.alpha.worker.js
@@ -0,0 +1,25 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.drawImage.alpha
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+promise_test(async t => {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#0f0';
+  ctx.fillRect(0, 0, 100, 50);
+  ctx.globalAlpha = 0;
+  const response = await fetch('/images/red.png');
+  const blob = await response.blob();
+  const bitmap = await createImageBitmap(blob);
+
+  ctx.drawImage(bitmap, 0, 0);
+  _assertPixelApprox(canvas, 50,25, 0,255,0,255, 2);
+  t.done();
+}, "");
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/drawing-images-to-the-canvas/2d.drawImage.animated.poster.html b/testing/web-platform/tests/html/canvas/offscreen/drawing-images-to-the-canvas/2d.drawImage.animated.poster.html
new file mode 100644
index 0000000000..eccf14bfd0
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/drawing-images-to-the-canvas/2d.drawImage.animated.poster.html
@@ -0,0 +1,26 @@
+
+
+OffscreenCanvas test: 2d.drawImage.animated.poster
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.drawImage.animated.poster
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              drawImage() of an APNG draws the poster frame
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/drawing-images-to-the-canvas/2d.drawImage.animated.poster.worker.js b/testing/web-platform/tests/html/canvas/offscreen/drawing-images-to-the-canvas/2d.drawImage.animated.poster.worker.js
new file mode 100644
index 0000000000..542c9382f6
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/drawing-images-to-the-canvas/2d.drawImage.animated.poster.worker.js
@@ -0,0 +1,22 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.drawImage.animated.poster
+// Description:drawImage() of an APNG draws the poster frame
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+promise_test(async t => {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  const response = await fetch('/images/anim-poster-gr.png');
+  const blob = await response.blob();
+  const bitmap = await createImageBitmap(blob);
+
+  ctx.drawImage(bitmap, 0, 0);
+  _assertPixelApprox(canvas, 50,25, 0,255,0,255, 2);
+  t.done();
+}, "drawImage() of an APNG draws the poster frame");
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/drawing-images-to-the-canvas/2d.drawImage.broken.html b/testing/web-platform/tests/html/canvas/offscreen/drawing-images-to-the-canvas/2d.drawImage.broken.html
new file mode 100644
index 0000000000..a2afa05f01
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/drawing-images-to-the-canvas/2d.drawImage.broken.html
@@ -0,0 +1,24 @@
+
+
+OffscreenCanvas test: 2d.drawImage.broken
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.drawImage.broken
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/drawing-images-to-the-canvas/2d.drawImage.broken.worker.js b/testing/web-platform/tests/html/canvas/offscreen/drawing-images-to-the-canvas/2d.drawImage.broken.worker.js
new file mode 100644
index 0000000000..dc695b5459
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/drawing-images-to-the-canvas/2d.drawImage.broken.worker.js
@@ -0,0 +1,20 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.drawImage.broken
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+promise_test(async t => {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  const response = await fetch('/images/broken.png');
+  const blob = await response.blob();
+
+  await promise_rejects_dom(t, 'InvalidStateError', createImageBitmap(blob), 'The source image could not be decoded.');
+  t.done();
+}, "");
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/drawing-images-to-the-canvas/2d.drawImage.canvas.html b/testing/web-platform/tests/html/canvas/offscreen/drawing-images-to-the-canvas/2d.drawImage.canvas.html
new file mode 100644
index 0000000000..e5eeedea6e
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/drawing-images-to-the-canvas/2d.drawImage.canvas.html
@@ -0,0 +1,36 @@
+
+
+OffscreenCanvas test: 2d.drawImage.canvas
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.drawImage.canvas
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/drawing-images-to-the-canvas/2d.drawImage.canvas.worker.js b/testing/web-platform/tests/html/canvas/offscreen/drawing-images-to-the-canvas/2d.drawImage.canvas.worker.js
new file mode 100644
index 0000000000..1f18cd7723
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/drawing-images-to-the-canvas/2d.drawImage.canvas.worker.js
@@ -0,0 +1,31 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.drawImage.canvas
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  var offscreenCanvas2 = new OffscreenCanvas(100, 50);
+  var ctx2 = offscreenCanvas2.getContext('2d');
+  ctx2.fillStyle = '#0f0';
+  ctx2.fillRect(0, 0, 100, 50);
+  ctx.fillStyle = '#f00';
+  ctx.drawImage(offscreenCanvas2, 0, 0);
+  _assertPixelApprox(canvas, 0,0, 0,255,0,255, 2);
+  _assertPixelApprox(canvas, 99,0, 0,255,0,255, 2);
+  _assertPixelApprox(canvas, 0,49, 0,255,0,255, 2);
+  _assertPixelApprox(canvas, 99,49, 0,255,0,255, 2);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/drawing-images-to-the-canvas/2d.drawImage.clip.html b/testing/web-platform/tests/html/canvas/offscreen/drawing-images-to-the-canvas/2d.drawImage.clip.html
new file mode 100644
index 0000000000..a828039b7b
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/drawing-images-to-the-canvas/2d.drawImage.clip.html
@@ -0,0 +1,34 @@
+
+
+OffscreenCanvas test: 2d.drawImage.clip
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.drawImage.clip
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/drawing-images-to-the-canvas/2d.drawImage.clip.worker.js b/testing/web-platform/tests/html/canvas/offscreen/drawing-images-to-the-canvas/2d.drawImage.clip.worker.js
new file mode 100644
index 0000000000..fea2a7bac7
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/drawing-images-to-the-canvas/2d.drawImage.clip.worker.js
@@ -0,0 +1,30 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.drawImage.clip
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+promise_test(async t => {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#0f0';
+  ctx.fillRect(0, 0, 100, 50);
+  ctx.rect(-10, -10, 1, 1);
+  ctx.clip();
+  const response = await fetch('/images/red.png');
+  const blob = await response.blob();
+  const bitmap = await createImageBitmap(blob);
+
+  ctx.fillStyle = '#0f0';
+  ctx.fillRect(0, 0, 100, 50);
+  ctx.rect(-10, -10, 1, 1);
+  ctx.clip();
+  ctx.drawImage(bitmap, 0, 0);
+  _assertPixelApprox(canvas, 50,25, 0,255,0,255, 2);
+  t.done();
+}, "");
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/drawing-images-to-the-canvas/2d.drawImage.composite.html b/testing/web-platform/tests/html/canvas/offscreen/drawing-images-to-the-canvas/2d.drawImage.composite.html
new file mode 100644
index 0000000000..b32b5a12ed
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/drawing-images-to-the-canvas/2d.drawImage.composite.html
@@ -0,0 +1,29 @@
+
+
+OffscreenCanvas test: 2d.drawImage.composite
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.drawImage.composite
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/drawing-images-to-the-canvas/2d.drawImage.composite.worker.js b/testing/web-platform/tests/html/canvas/offscreen/drawing-images-to-the-canvas/2d.drawImage.composite.worker.js
new file mode 100644
index 0000000000..0b17673b68
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/drawing-images-to-the-canvas/2d.drawImage.composite.worker.js
@@ -0,0 +1,25 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.drawImage.composite
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+promise_test(async t => {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#0f0';
+  ctx.fillRect(0, 0, 100, 50);
+  ctx.globalCompositeOperation = 'destination-over';
+  const response = await fetch('/images/red.png');
+  const blob = await response.blob();
+  const bitmap = await createImageBitmap(blob);
+
+  ctx.drawImage(bitmap, 0, 0);
+  _assertPixelApprox(canvas, 50,25, 0,255,0,255, 2);
+  t.done();
+}, "");
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/drawing-images-to-the-canvas/2d.drawImage.floatsource.html b/testing/web-platform/tests/html/canvas/offscreen/drawing-images-to-the-canvas/2d.drawImage.floatsource.html
new file mode 100644
index 0000000000..e201082e35
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/drawing-images-to-the-canvas/2d.drawImage.floatsource.html
@@ -0,0 +1,25 @@
+
+
+OffscreenCanvas test: 2d.drawImage.floatsource
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.drawImage.floatsource
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/drawing-images-to-the-canvas/2d.drawImage.floatsource.worker.js b/testing/web-platform/tests/html/canvas/offscreen/drawing-images-to-the-canvas/2d.drawImage.floatsource.worker.js
new file mode 100644
index 0000000000..1efc17d04d
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/drawing-images-to-the-canvas/2d.drawImage.floatsource.worker.js
@@ -0,0 +1,21 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.drawImage.floatsource
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+promise_test(async t => {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  const response = await fetch('/images/green.png');
+  const blob = await response.blob();
+  const bitmap = await createImageBitmap(blob);
+  ctx.drawImage(bitmap, 10.1, 10.1, 0.1, 0.1, 0, 0, 100, 50);
+  _assertPixelApprox(canvas, 50,25, 0,255,0,255, 2);
+  t.done();
+}, "");
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/drawing-images-to-the-canvas/2d.drawImage.negativedest.html b/testing/web-platform/tests/html/canvas/offscreen/drawing-images-to-the-canvas/2d.drawImage.negativedest.html
new file mode 100644
index 0000000000..3e43a772c6
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/drawing-images-to-the-canvas/2d.drawImage.negativedest.html
@@ -0,0 +1,37 @@
+
+
+OffscreenCanvas test: 2d.drawImage.negativedest
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.drawImage.negativedest
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Negative destination width/height represents the correct rectangle
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/drawing-images-to-the-canvas/2d.drawImage.negativedest.worker.js b/testing/web-platform/tests/html/canvas/offscreen/drawing-images-to-the-canvas/2d.drawImage.negativedest.worker.js
new file mode 100644
index 0000000000..ce5cf5efad
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/drawing-images-to-the-canvas/2d.drawImage.negativedest.worker.js
@@ -0,0 +1,33 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.drawImage.negativedest
+// Description:Negative destination width/height represents the correct rectangle
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+promise_test(async t => {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#f00';
+  ctx.fillRect(0, 0, 100, 50);
+  const response = await fetch('/images/ggrr-256x256.png');
+  const blob = await response.blob();
+  const bitmap = await createImageBitmap(blob);
+  ctx.drawImage(bitmap, 100, 78, 50, 50, 0, 50, 50, -50);
+  ctx.drawImage(bitmap, 100, 128, 50, -50, 100, 50, -50, -50);
+  _assertPixelApprox(canvas, 1,1, 0,255,0,255, 2);
+  _assertPixelApprox(canvas, 1,48, 0,255,0,255, 2);
+  _assertPixelApprox(canvas, 98,1, 0,255,0,255, 2);
+  _assertPixelApprox(canvas, 98,48, 0,255,0,255, 2);
+  _assertPixelApprox(canvas, 48,1, 0,255,0,255, 2);
+  _assertPixelApprox(canvas, 48,48, 0,255,0,255, 2);
+  _assertPixelApprox(canvas, 51,1, 0,255,0,255, 2);
+  _assertPixelApprox(canvas, 51,48, 0,255,0,255, 2);
+  _assertPixelApprox(canvas, 25,25, 0,255,0,255, 2);
+  _assertPixelApprox(canvas, 75,25, 0,255,0,255, 2);
+  t.done();
+}, "Negative destination width/height represents the correct rectangle");
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/drawing-images-to-the-canvas/2d.drawImage.negativedir.html b/testing/web-platform/tests/html/canvas/offscreen/drawing-images-to-the-canvas/2d.drawImage.negativedir.html
new file mode 100644
index 0000000000..347b634cfd
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/drawing-images-to-the-canvas/2d.drawImage.negativedir.html
@@ -0,0 +1,37 @@
+
+
+OffscreenCanvas test: 2d.drawImage.negativedir
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.drawImage.negativedir
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Negative dimensions do not affect the direction of the image
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/drawing-images-to-the-canvas/2d.drawImage.negativedir.worker.js b/testing/web-platform/tests/html/canvas/offscreen/drawing-images-to-the-canvas/2d.drawImage.negativedir.worker.js
new file mode 100644
index 0000000000..c82b9ba1be
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/drawing-images-to-the-canvas/2d.drawImage.negativedir.worker.js
@@ -0,0 +1,33 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.drawImage.negativedir
+// Description:Negative dimensions do not affect the direction of the image
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+promise_test(async t => {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#f00';
+  ctx.fillRect(0, 0, 100, 50);
+  const response = await fetch('/images/ggrr-256x256.png');
+  const blob = await response.blob();
+  const bitmap = await createImageBitmap(blob);
+  ctx.drawImage(bitmap, 0, 178, 50, -100, 0, 0, 50, 100);
+  ctx.drawImage(bitmap, 0, 78, 50, 100, 50, 100, 50, -100);
+  _assertPixelApprox(canvas, 1,1, 0,255,0,255, 2);
+  _assertPixelApprox(canvas, 1,48, 0,255,0,255, 2);
+  _assertPixelApprox(canvas, 98,1, 0,255,0,255, 2);
+  _assertPixelApprox(canvas, 98,48, 0,255,0,255, 2);
+  _assertPixelApprox(canvas, 48,1, 0,255,0,255, 2);
+  _assertPixelApprox(canvas, 48,48, 0,255,0,255, 2);
+  _assertPixelApprox(canvas, 51,1, 0,255,0,255, 2);
+  _assertPixelApprox(canvas, 51,48, 0,255,0,255, 2);
+  _assertPixelApprox(canvas, 25,25, 0,255,0,255, 2);
+  _assertPixelApprox(canvas, 75,25, 0,255,0,255, 2);
+  t.done();
+}, "Negative dimensions do not affect the direction of the image");
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/drawing-images-to-the-canvas/2d.drawImage.negativesource.html b/testing/web-platform/tests/html/canvas/offscreen/drawing-images-to-the-canvas/2d.drawImage.negativesource.html
new file mode 100644
index 0000000000..3e18725720
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/drawing-images-to-the-canvas/2d.drawImage.negativesource.html
@@ -0,0 +1,37 @@
+
+
+OffscreenCanvas test: 2d.drawImage.negativesource
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.drawImage.negativesource
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Negative source width/height represents the correct rectangle
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/drawing-images-to-the-canvas/2d.drawImage.negativesource.worker.js b/testing/web-platform/tests/html/canvas/offscreen/drawing-images-to-the-canvas/2d.drawImage.negativesource.worker.js
new file mode 100644
index 0000000000..f92d15774d
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/drawing-images-to-the-canvas/2d.drawImage.negativesource.worker.js
@@ -0,0 +1,33 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.drawImage.negativesource
+// Description:Negative source width/height represents the correct rectangle
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+promise_test(async t => {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#f00';
+  ctx.fillRect(0, 0, 100, 50);
+  const response = await fetch('/images/ggrr-256x256.png');
+  const blob = await response.blob();
+  const bitmap = await createImageBitmap(blob);
+  ctx.drawImage(bitmap, 100, 78, -100, 50, 0, 0, 50, 50);
+  ctx.drawImage(bitmap, 100, 128, -100, -50, 50, 0, 50, 50);
+  _assertPixelApprox(canvas, 1,1, 0,255,0,255, 2);
+  _assertPixelApprox(canvas, 1,48, 0,255,0,255, 2);
+  _assertPixelApprox(canvas, 98,1, 0,255,0,255, 2);
+  _assertPixelApprox(canvas, 98,48, 0,255,0,255, 2);
+  _assertPixelApprox(canvas, 48,1, 0,255,0,255, 2);
+  _assertPixelApprox(canvas, 48,48, 0,255,0,255, 2);
+  _assertPixelApprox(canvas, 51,1, 0,255,0,255, 2);
+  _assertPixelApprox(canvas, 51,48, 0,255,0,255, 2);
+  _assertPixelApprox(canvas, 25,25, 0,255,0,255, 2);
+  _assertPixelApprox(canvas, 75,25, 0,255,0,255, 2);
+  t.done();
+}, "Negative source width/height represents the correct rectangle");
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/drawing-images-to-the-canvas/2d.drawImage.nonfinite.html b/testing/web-platform/tests/html/canvas/offscreen/drawing-images-to-the-canvas/2d.drawImage.nonfinite.html
new file mode 100644
index 0000000000..93dccd3d4e
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/drawing-images-to-the-canvas/2d.drawImage.nonfinite.html
@@ -0,0 +1,328 @@
+
+
+OffscreenCanvas test: 2d.drawImage.nonfinite
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.drawImage.nonfinite
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              drawImage() with Infinity/NaN is ignored
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/drawing-images-to-the-canvas/2d.drawImage.nonfinite.worker.js b/testing/web-platform/tests/html/canvas/offscreen/drawing-images-to-the-canvas/2d.drawImage.nonfinite.worker.js
new file mode 100644
index 0000000000..a56f09e0b2
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/drawing-images-to-the-canvas/2d.drawImage.nonfinite.worker.js
@@ -0,0 +1,324 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.drawImage.nonfinite
+// Description:drawImage() with Infinity/NaN is ignored
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+promise_test(async t => {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#0f0';
+  ctx.fillRect(0, 0, 100, 50);
+  const response = await fetch('/images/redtransparent.png');
+  const blob = await response.blob();
+  const bitmap = await createImageBitmap(blob);
+
+  ctx.drawImage(bitmap, Infinity, 0);
+  ctx.drawImage(bitmap, -Infinity, 0);
+  ctx.drawImage(bitmap, NaN, 0);
+  ctx.drawImage(bitmap, 0, Infinity);
+  ctx.drawImage(bitmap, 0, -Infinity);
+  ctx.drawImage(bitmap, 0, NaN);
+  ctx.drawImage(bitmap, Infinity, Infinity);
+  ctx.drawImage(bitmap, Infinity, 0, 100, 50);
+  ctx.drawImage(bitmap, -Infinity, 0, 100, 50);
+  ctx.drawImage(bitmap, NaN, 0, 100, 50);
+  ctx.drawImage(bitmap, 0, Infinity, 100, 50);
+  ctx.drawImage(bitmap, 0, -Infinity, 100, 50);
+  ctx.drawImage(bitmap, 0, NaN, 100, 50);
+  ctx.drawImage(bitmap, 0, 0, Infinity, 50);
+  ctx.drawImage(bitmap, 0, 0, -Infinity, 50);
+  ctx.drawImage(bitmap, 0, 0, NaN, 50);
+  ctx.drawImage(bitmap, 0, 0, 100, Infinity);
+  ctx.drawImage(bitmap, 0, 0, 100, -Infinity);
+  ctx.drawImage(bitmap, 0, 0, 100, NaN);
+  ctx.drawImage(bitmap, Infinity, Infinity, 100, 50);
+  ctx.drawImage(bitmap, Infinity, Infinity, Infinity, 50);
+  ctx.drawImage(bitmap, Infinity, Infinity, Infinity, Infinity);
+  ctx.drawImage(bitmap, Infinity, Infinity, 100, Infinity);
+  ctx.drawImage(bitmap, Infinity, 0, Infinity, 50);
+  ctx.drawImage(bitmap, Infinity, 0, Infinity, Infinity);
+  ctx.drawImage(bitmap, Infinity, 0, 100, Infinity);
+  ctx.drawImage(bitmap, 0, Infinity, Infinity, 50);
+  ctx.drawImage(bitmap, 0, Infinity, Infinity, Infinity);
+  ctx.drawImage(bitmap, 0, Infinity, 100, Infinity);
+  ctx.drawImage(bitmap, 0, 0, Infinity, Infinity);
+  ctx.drawImage(bitmap, Infinity, 0, 100, 50, 0, 0, 100, 50);
+  ctx.drawImage(bitmap, -Infinity, 0, 100, 50, 0, 0, 100, 50);
+  ctx.drawImage(bitmap, NaN, 0, 100, 50, 0, 0, 100, 50);
+  ctx.drawImage(bitmap, 0, Infinity, 100, 50, 0, 0, 100, 50);
+  ctx.drawImage(bitmap, 0, -Infinity, 100, 50, 0, 0, 100, 50);
+  ctx.drawImage(bitmap, 0, NaN, 100, 50, 0, 0, 100, 50);
+  ctx.drawImage(bitmap, 0, 0, Infinity, 50, 0, 0, 100, 50);
+  ctx.drawImage(bitmap, 0, 0, -Infinity, 50, 0, 0, 100, 50);
+  ctx.drawImage(bitmap, 0, 0, NaN, 50, 0, 0, 100, 50);
+  ctx.drawImage(bitmap, 0, 0, 100, Infinity, 0, 0, 100, 50);
+  ctx.drawImage(bitmap, 0, 0, 100, -Infinity, 0, 0, 100, 50);
+  ctx.drawImage(bitmap, 0, 0, 100, NaN, 0, 0, 100, 50);
+  ctx.drawImage(bitmap, 0, 0, 100, 50, Infinity, 0, 100, 50);
+  ctx.drawImage(bitmap, 0, 0, 100, 50, -Infinity, 0, 100, 50);
+  ctx.drawImage(bitmap, 0, 0, 100, 50, NaN, 0, 100, 50);
+  ctx.drawImage(bitmap, 0, 0, 100, 50, 0, Infinity, 100, 50);
+  ctx.drawImage(bitmap, 0, 0, 100, 50, 0, -Infinity, 100, 50);
+  ctx.drawImage(bitmap, 0, 0, 100, 50, 0, NaN, 100, 50);
+  ctx.drawImage(bitmap, 0, 0, 100, 50, 0, 0, Infinity, 50);
+  ctx.drawImage(bitmap, 0, 0, 100, 50, 0, 0, -Infinity, 50);
+  ctx.drawImage(bitmap, 0, 0, 100, 50, 0, 0, NaN, 50);
+  ctx.drawImage(bitmap, 0, 0, 100, 50, 0, 0, 100, Infinity);
+  ctx.drawImage(bitmap, 0, 0, 100, 50, 0, 0, 100, -Infinity);
+  ctx.drawImage(bitmap, 0, 0, 100, 50, 0, 0, 100, NaN);
+  ctx.drawImage(bitmap, Infinity, Infinity, 100, 50, 0, 0, 100, 50);
+  ctx.drawImage(bitmap, Infinity, Infinity, Infinity, 50, 0, 0, 100, 50);
+  ctx.drawImage(bitmap, Infinity, Infinity, Infinity, Infinity, 0, 0, 100, 50);
+  ctx.drawImage(bitmap, Infinity, Infinity, Infinity, Infinity, Infinity, 0, 100, 50);
+  ctx.drawImage(bitmap, Infinity, Infinity, Infinity, Infinity, Infinity, Infinity, 100, 50);
+  ctx.drawImage(bitmap, Infinity, Infinity, Infinity, Infinity, Infinity, Infinity, Infinity, 50);
+  ctx.drawImage(bitmap, Infinity, Infinity, Infinity, Infinity, Infinity, Infinity, Infinity, Infinity);
+  ctx.drawImage(bitmap, Infinity, Infinity, Infinity, Infinity, Infinity, Infinity, 100, Infinity);
+  ctx.drawImage(bitmap, Infinity, Infinity, Infinity, Infinity, Infinity, 0, Infinity, 50);
+  ctx.drawImage(bitmap, Infinity, Infinity, Infinity, Infinity, Infinity, 0, Infinity, Infinity);
+  ctx.drawImage(bitmap, Infinity, Infinity, Infinity, Infinity, Infinity, 0, 100, Infinity);
+  ctx.drawImage(bitmap, Infinity, Infinity, Infinity, Infinity, 0, Infinity, 100, 50);
+  ctx.drawImage(bitmap, Infinity, Infinity, Infinity, Infinity, 0, Infinity, Infinity, 50);
+  ctx.drawImage(bitmap, Infinity, Infinity, Infinity, Infinity, 0, Infinity, Infinity, Infinity);
+  ctx.drawImage(bitmap, Infinity, Infinity, Infinity, Infinity, 0, Infinity, 100, Infinity);
+  ctx.drawImage(bitmap, Infinity, Infinity, Infinity, Infinity, 0, 0, Infinity, 50);
+  ctx.drawImage(bitmap, Infinity, Infinity, Infinity, Infinity, 0, 0, Infinity, Infinity);
+  ctx.drawImage(bitmap, Infinity, Infinity, Infinity, Infinity, 0, 0, 100, Infinity);
+  ctx.drawImage(bitmap, Infinity, Infinity, Infinity, 50, Infinity, 0, 100, 50);
+  ctx.drawImage(bitmap, Infinity, Infinity, Infinity, 50, Infinity, Infinity, 100, 50);
+  ctx.drawImage(bitmap, Infinity, Infinity, Infinity, 50, Infinity, Infinity, Infinity, 50);
+  ctx.drawImage(bitmap, Infinity, Infinity, Infinity, 50, Infinity, Infinity, Infinity, Infinity);
+  ctx.drawImage(bitmap, Infinity, Infinity, Infinity, 50, Infinity, Infinity, 100, Infinity);
+  ctx.drawImage(bitmap, Infinity, Infinity, Infinity, 50, Infinity, 0, Infinity, 50);
+  ctx.drawImage(bitmap, Infinity, Infinity, Infinity, 50, Infinity, 0, Infinity, Infinity);
+  ctx.drawImage(bitmap, Infinity, Infinity, Infinity, 50, Infinity, 0, 100, Infinity);
+  ctx.drawImage(bitmap, Infinity, Infinity, Infinity, 50, 0, Infinity, 100, 50);
+  ctx.drawImage(bitmap, Infinity, Infinity, Infinity, 50, 0, Infinity, Infinity, 50);
+  ctx.drawImage(bitmap, Infinity, Infinity, Infinity, 50, 0, Infinity, Infinity, Infinity);
+  ctx.drawImage(bitmap, Infinity, Infinity, Infinity, 50, 0, Infinity, 100, Infinity);
+  ctx.drawImage(bitmap, Infinity, Infinity, Infinity, 50, 0, 0, Infinity, 50);
+  ctx.drawImage(bitmap, Infinity, Infinity, Infinity, 50, 0, 0, Infinity, Infinity);
+  ctx.drawImage(bitmap, Infinity, Infinity, Infinity, 50, 0, 0, 100, Infinity);
+  ctx.drawImage(bitmap, Infinity, Infinity, 100, Infinity, 0, 0, 100, 50);
+  ctx.drawImage(bitmap, Infinity, Infinity, 100, Infinity, Infinity, 0, 100, 50);
+  ctx.drawImage(bitmap, Infinity, Infinity, 100, Infinity, Infinity, Infinity, 100, 50);
+  ctx.drawImage(bitmap, Infinity, Infinity, 100, Infinity, Infinity, Infinity, Infinity, 50);
+  ctx.drawImage(bitmap, Infinity, Infinity, 100, Infinity, Infinity, Infinity, Infinity, Infinity);
+  ctx.drawImage(bitmap, Infinity, Infinity, 100, Infinity, Infinity, Infinity, 100, Infinity);
+  ctx.drawImage(bitmap, Infinity, Infinity, 100, Infinity, Infinity, 0, Infinity, 50);
+  ctx.drawImage(bitmap, Infinity, Infinity, 100, Infinity, Infinity, 0, Infinity, Infinity);
+  ctx.drawImage(bitmap, Infinity, Infinity, 100, Infinity, Infinity, 0, 100, Infinity);
+  ctx.drawImage(bitmap, Infinity, Infinity, 100, Infinity, 0, Infinity, 100, 50);
+  ctx.drawImage(bitmap, Infinity, Infinity, 100, Infinity, 0, Infinity, Infinity, 50);
+  ctx.drawImage(bitmap, Infinity, Infinity, 100, Infinity, 0, Infinity, Infinity, Infinity);
+  ctx.drawImage(bitmap, Infinity, Infinity, 100, Infinity, 0, Infinity, 100, Infinity);
+  ctx.drawImage(bitmap, Infinity, Infinity, 100, Infinity, 0, 0, Infinity, 50);
+  ctx.drawImage(bitmap, Infinity, Infinity, 100, Infinity, 0, 0, Infinity, Infinity);
+  ctx.drawImage(bitmap, Infinity, Infinity, 100, Infinity, 0, 0, 100, Infinity);
+  ctx.drawImage(bitmap, Infinity, Infinity, 100, 50, Infinity, 0, 100, 50);
+  ctx.drawImage(bitmap, Infinity, Infinity, 100, 50, Infinity, Infinity, 100, 50);
+  ctx.drawImage(bitmap, Infinity, Infinity, 100, 50, Infinity, Infinity, Infinity, 50);
+  ctx.drawImage(bitmap, Infinity, Infinity, 100, 50, Infinity, Infinity, Infinity, Infinity);
+  ctx.drawImage(bitmap, Infinity, Infinity, 100, 50, Infinity, Infinity, 100, Infinity);
+  ctx.drawImage(bitmap, Infinity, Infinity, 100, 50, Infinity, 0, Infinity, 50);
+  ctx.drawImage(bitmap, Infinity, Infinity, 100, 50, Infinity, 0, Infinity, Infinity);
+  ctx.drawImage(bitmap, Infinity, Infinity, 100, 50, Infinity, 0, 100, Infinity);
+  ctx.drawImage(bitmap, Infinity, Infinity, 100, 50, 0, Infinity, 100, 50);
+  ctx.drawImage(bitmap, Infinity, Infinity, 100, 50, 0, Infinity, Infinity, 50);
+  ctx.drawImage(bitmap, Infinity, Infinity, 100, 50, 0, Infinity, Infinity, Infinity);
+  ctx.drawImage(bitmap, Infinity, Infinity, 100, 50, 0, Infinity, 100, Infinity);
+  ctx.drawImage(bitmap, Infinity, Infinity, 100, 50, 0, 0, Infinity, 50);
+  ctx.drawImage(bitmap, Infinity, Infinity, 100, 50, 0, 0, Infinity, Infinity);
+  ctx.drawImage(bitmap, Infinity, Infinity, 100, 50, 0, 0, 100, Infinity);
+  ctx.drawImage(bitmap, Infinity, 0, Infinity, 50, 0, 0, 100, 50);
+  ctx.drawImage(bitmap, Infinity, 0, Infinity, Infinity, 0, 0, 100, 50);
+  ctx.drawImage(bitmap, Infinity, 0, Infinity, Infinity, Infinity, 0, 100, 50);
+  ctx.drawImage(bitmap, Infinity, 0, Infinity, Infinity, Infinity, Infinity, 100, 50);
+  ctx.drawImage(bitmap, Infinity, 0, Infinity, Infinity, Infinity, Infinity, Infinity, 50);
+  ctx.drawImage(bitmap, Infinity, 0, Infinity, Infinity, Infinity, Infinity, Infinity, Infinity);
+  ctx.drawImage(bitmap, Infinity, 0, Infinity, Infinity, Infinity, Infinity, 100, Infinity);
+  ctx.drawImage(bitmap, Infinity, 0, Infinity, Infinity, Infinity, 0, Infinity, 50);
+  ctx.drawImage(bitmap, Infinity, 0, Infinity, Infinity, Infinity, 0, Infinity, Infinity);
+  ctx.drawImage(bitmap, Infinity, 0, Infinity, Infinity, Infinity, 0, 100, Infinity);
+  ctx.drawImage(bitmap, Infinity, 0, Infinity, Infinity, 0, Infinity, 100, 50);
+  ctx.drawImage(bitmap, Infinity, 0, Infinity, Infinity, 0, Infinity, Infinity, 50);
+  ctx.drawImage(bitmap, Infinity, 0, Infinity, Infinity, 0, Infinity, Infinity, Infinity);
+  ctx.drawImage(bitmap, Infinity, 0, Infinity, Infinity, 0, Infinity, 100, Infinity);
+  ctx.drawImage(bitmap, Infinity, 0, Infinity, Infinity, 0, 0, Infinity, 50);
+  ctx.drawImage(bitmap, Infinity, 0, Infinity, Infinity, 0, 0, Infinity, Infinity);
+  ctx.drawImage(bitmap, Infinity, 0, Infinity, Infinity, 0, 0, 100, Infinity);
+  ctx.drawImage(bitmap, Infinity, 0, Infinity, 50, Infinity, 0, 100, 50);
+  ctx.drawImage(bitmap, Infinity, 0, Infinity, 50, Infinity, Infinity, 100, 50);
+  ctx.drawImage(bitmap, Infinity, 0, Infinity, 50, Infinity, Infinity, Infinity, 50);
+  ctx.drawImage(bitmap, Infinity, 0, Infinity, 50, Infinity, Infinity, Infinity, Infinity);
+  ctx.drawImage(bitmap, Infinity, 0, Infinity, 50, Infinity, Infinity, 100, Infinity);
+  ctx.drawImage(bitmap, Infinity, 0, Infinity, 50, Infinity, 0, Infinity, 50);
+  ctx.drawImage(bitmap, Infinity, 0, Infinity, 50, Infinity, 0, Infinity, Infinity);
+  ctx.drawImage(bitmap, Infinity, 0, Infinity, 50, Infinity, 0, 100, Infinity);
+  ctx.drawImage(bitmap, Infinity, 0, Infinity, 50, 0, Infinity, 100, 50);
+  ctx.drawImage(bitmap, Infinity, 0, Infinity, 50, 0, Infinity, Infinity, 50);
+  ctx.drawImage(bitmap, Infinity, 0, Infinity, 50, 0, Infinity, Infinity, Infinity);
+  ctx.drawImage(bitmap, Infinity, 0, Infinity, 50, 0, Infinity, 100, Infinity);
+  ctx.drawImage(bitmap, Infinity, 0, Infinity, 50, 0, 0, Infinity, 50);
+  ctx.drawImage(bitmap, Infinity, 0, Infinity, 50, 0, 0, Infinity, Infinity);
+  ctx.drawImage(bitmap, Infinity, 0, Infinity, 50, 0, 0, 100, Infinity);
+  ctx.drawImage(bitmap, Infinity, 0, 100, Infinity, 0, 0, 100, 50);
+  ctx.drawImage(bitmap, Infinity, 0, 100, Infinity, Infinity, 0, 100, 50);
+  ctx.drawImage(bitmap, Infinity, 0, 100, Infinity, Infinity, Infinity, 100, 50);
+  ctx.drawImage(bitmap, Infinity, 0, 100, Infinity, Infinity, Infinity, Infinity, 50);
+  ctx.drawImage(bitmap, Infinity, 0, 100, Infinity, Infinity, Infinity, Infinity, Infinity);
+  ctx.drawImage(bitmap, Infinity, 0, 100, Infinity, Infinity, Infinity, 100, Infinity);
+  ctx.drawImage(bitmap, Infinity, 0, 100, Infinity, Infinity, 0, Infinity, 50);
+  ctx.drawImage(bitmap, Infinity, 0, 100, Infinity, Infinity, 0, Infinity, Infinity);
+  ctx.drawImage(bitmap, Infinity, 0, 100, Infinity, Infinity, 0, 100, Infinity);
+  ctx.drawImage(bitmap, Infinity, 0, 100, Infinity, 0, Infinity, 100, 50);
+  ctx.drawImage(bitmap, Infinity, 0, 100, Infinity, 0, Infinity, Infinity, 50);
+  ctx.drawImage(bitmap, Infinity, 0, 100, Infinity, 0, Infinity, Infinity, Infinity);
+  ctx.drawImage(bitmap, Infinity, 0, 100, Infinity, 0, Infinity, 100, Infinity);
+  ctx.drawImage(bitmap, Infinity, 0, 100, Infinity, 0, 0, Infinity, 50);
+  ctx.drawImage(bitmap, Infinity, 0, 100, Infinity, 0, 0, Infinity, Infinity);
+  ctx.drawImage(bitmap, Infinity, 0, 100, Infinity, 0, 0, 100, Infinity);
+  ctx.drawImage(bitmap, Infinity, 0, 100, 50, Infinity, 0, 100, 50);
+  ctx.drawImage(bitmap, Infinity, 0, 100, 50, Infinity, Infinity, 100, 50);
+  ctx.drawImage(bitmap, Infinity, 0, 100, 50, Infinity, Infinity, Infinity, 50);
+  ctx.drawImage(bitmap, Infinity, 0, 100, 50, Infinity, Infinity, Infinity, Infinity);
+  ctx.drawImage(bitmap, Infinity, 0, 100, 50, Infinity, Infinity, 100, Infinity);
+  ctx.drawImage(bitmap, Infinity, 0, 100, 50, Infinity, 0, Infinity, 50);
+  ctx.drawImage(bitmap, Infinity, 0, 100, 50, Infinity, 0, Infinity, Infinity);
+  ctx.drawImage(bitmap, Infinity, 0, 100, 50, Infinity, 0, 100, Infinity);
+  ctx.drawImage(bitmap, Infinity, 0, 100, 50, 0, Infinity, 100, 50);
+  ctx.drawImage(bitmap, Infinity, 0, 100, 50, 0, Infinity, Infinity, 50);
+  ctx.drawImage(bitmap, Infinity, 0, 100, 50, 0, Infinity, Infinity, Infinity);
+  ctx.drawImage(bitmap, Infinity, 0, 100, 50, 0, Infinity, 100, Infinity);
+  ctx.drawImage(bitmap, Infinity, 0, 100, 50, 0, 0, Infinity, 50);
+  ctx.drawImage(bitmap, Infinity, 0, 100, 50, 0, 0, Infinity, Infinity);
+  ctx.drawImage(bitmap, Infinity, 0, 100, 50, 0, 0, 100, Infinity);
+  ctx.drawImage(bitmap, 0, Infinity, Infinity, 50, 0, 0, 100, 50);
+  ctx.drawImage(bitmap, 0, Infinity, Infinity, Infinity, 0, 0, 100, 50);
+  ctx.drawImage(bitmap, 0, Infinity, Infinity, Infinity, Infinity, 0, 100, 50);
+  ctx.drawImage(bitmap, 0, Infinity, Infinity, Infinity, Infinity, Infinity, 100, 50);
+  ctx.drawImage(bitmap, 0, Infinity, Infinity, Infinity, Infinity, Infinity, Infinity, 50);
+  ctx.drawImage(bitmap, 0, Infinity, Infinity, Infinity, Infinity, Infinity, Infinity, Infinity);
+  ctx.drawImage(bitmap, 0, Infinity, Infinity, Infinity, Infinity, Infinity, 100, Infinity);
+  ctx.drawImage(bitmap, 0, Infinity, Infinity, Infinity, Infinity, 0, Infinity, 50);
+  ctx.drawImage(bitmap, 0, Infinity, Infinity, Infinity, Infinity, 0, Infinity, Infinity);
+  ctx.drawImage(bitmap, 0, Infinity, Infinity, Infinity, Infinity, 0, 100, Infinity);
+  ctx.drawImage(bitmap, 0, Infinity, Infinity, Infinity, 0, Infinity, 100, 50);
+  ctx.drawImage(bitmap, 0, Infinity, Infinity, Infinity, 0, Infinity, Infinity, 50);
+  ctx.drawImage(bitmap, 0, Infinity, Infinity, Infinity, 0, Infinity, Infinity, Infinity);
+  ctx.drawImage(bitmap, 0, Infinity, Infinity, Infinity, 0, Infinity, 100, Infinity);
+  ctx.drawImage(bitmap, 0, Infinity, Infinity, Infinity, 0, 0, Infinity, 50);
+  ctx.drawImage(bitmap, 0, Infinity, Infinity, Infinity, 0, 0, Infinity, Infinity);
+  ctx.drawImage(bitmap, 0, Infinity, Infinity, Infinity, 0, 0, 100, Infinity);
+  ctx.drawImage(bitmap, 0, Infinity, Infinity, 50, Infinity, 0, 100, 50);
+  ctx.drawImage(bitmap, 0, Infinity, Infinity, 50, Infinity, Infinity, 100, 50);
+  ctx.drawImage(bitmap, 0, Infinity, Infinity, 50, Infinity, Infinity, Infinity, 50);
+  ctx.drawImage(bitmap, 0, Infinity, Infinity, 50, Infinity, Infinity, Infinity, Infinity);
+  ctx.drawImage(bitmap, 0, Infinity, Infinity, 50, Infinity, Infinity, 100, Infinity);
+  ctx.drawImage(bitmap, 0, Infinity, Infinity, 50, Infinity, 0, Infinity, 50);
+  ctx.drawImage(bitmap, 0, Infinity, Infinity, 50, Infinity, 0, Infinity, Infinity);
+  ctx.drawImage(bitmap, 0, Infinity, Infinity, 50, Infinity, 0, 100, Infinity);
+  ctx.drawImage(bitmap, 0, Infinity, Infinity, 50, 0, Infinity, 100, 50);
+  ctx.drawImage(bitmap, 0, Infinity, Infinity, 50, 0, Infinity, Infinity, 50);
+  ctx.drawImage(bitmap, 0, Infinity, Infinity, 50, 0, Infinity, Infinity, Infinity);
+  ctx.drawImage(bitmap, 0, Infinity, Infinity, 50, 0, Infinity, 100, Infinity);
+  ctx.drawImage(bitmap, 0, Infinity, Infinity, 50, 0, 0, Infinity, 50);
+  ctx.drawImage(bitmap, 0, Infinity, Infinity, 50, 0, 0, Infinity, Infinity);
+  ctx.drawImage(bitmap, 0, Infinity, Infinity, 50, 0, 0, 100, Infinity);
+  ctx.drawImage(bitmap, 0, Infinity, 100, Infinity, 0, 0, 100, 50);
+  ctx.drawImage(bitmap, 0, Infinity, 100, Infinity, Infinity, 0, 100, 50);
+  ctx.drawImage(bitmap, 0, Infinity, 100, Infinity, Infinity, Infinity, 100, 50);
+  ctx.drawImage(bitmap, 0, Infinity, 100, Infinity, Infinity, Infinity, Infinity, 50);
+  ctx.drawImage(bitmap, 0, Infinity, 100, Infinity, Infinity, Infinity, Infinity, Infinity);
+  ctx.drawImage(bitmap, 0, Infinity, 100, Infinity, Infinity, Infinity, 100, Infinity);
+  ctx.drawImage(bitmap, 0, Infinity, 100, Infinity, Infinity, 0, Infinity, 50);
+  ctx.drawImage(bitmap, 0, Infinity, 100, Infinity, Infinity, 0, Infinity, Infinity);
+  ctx.drawImage(bitmap, 0, Infinity, 100, Infinity, Infinity, 0, 100, Infinity);
+  ctx.drawImage(bitmap, 0, Infinity, 100, Infinity, 0, Infinity, 100, 50);
+  ctx.drawImage(bitmap, 0, Infinity, 100, Infinity, 0, Infinity, Infinity, 50);
+  ctx.drawImage(bitmap, 0, Infinity, 100, Infinity, 0, Infinity, Infinity, Infinity);
+  ctx.drawImage(bitmap, 0, Infinity, 100, Infinity, 0, Infinity, 100, Infinity);
+  ctx.drawImage(bitmap, 0, Infinity, 100, Infinity, 0, 0, Infinity, 50);
+  ctx.drawImage(bitmap, 0, Infinity, 100, Infinity, 0, 0, Infinity, Infinity);
+  ctx.drawImage(bitmap, 0, Infinity, 100, Infinity, 0, 0, 100, Infinity);
+  ctx.drawImage(bitmap, 0, Infinity, 100, 50, Infinity, 0, 100, 50);
+  ctx.drawImage(bitmap, 0, Infinity, 100, 50, Infinity, Infinity, 100, 50);
+  ctx.drawImage(bitmap, 0, Infinity, 100, 50, Infinity, Infinity, Infinity, 50);
+  ctx.drawImage(bitmap, 0, Infinity, 100, 50, Infinity, Infinity, Infinity, Infinity);
+  ctx.drawImage(bitmap, 0, Infinity, 100, 50, Infinity, Infinity, 100, Infinity);
+  ctx.drawImage(bitmap, 0, Infinity, 100, 50, Infinity, 0, Infinity, 50);
+  ctx.drawImage(bitmap, 0, Infinity, 100, 50, Infinity, 0, Infinity, Infinity);
+  ctx.drawImage(bitmap, 0, Infinity, 100, 50, Infinity, 0, 100, Infinity);
+  ctx.drawImage(bitmap, 0, Infinity, 100, 50, 0, Infinity, 100, 50);
+  ctx.drawImage(bitmap, 0, Infinity, 100, 50, 0, Infinity, Infinity, 50);
+  ctx.drawImage(bitmap, 0, Infinity, 100, 50, 0, Infinity, Infinity, Infinity);
+  ctx.drawImage(bitmap, 0, Infinity, 100, 50, 0, Infinity, 100, Infinity);
+  ctx.drawImage(bitmap, 0, Infinity, 100, 50, 0, 0, Infinity, 50);
+  ctx.drawImage(bitmap, 0, Infinity, 100, 50, 0, 0, Infinity, Infinity);
+  ctx.drawImage(bitmap, 0, Infinity, 100, 50, 0, 0, 100, Infinity);
+  ctx.drawImage(bitmap, 0, 0, Infinity, Infinity, 0, 0, 100, 50);
+  ctx.drawImage(bitmap, 0, 0, Infinity, Infinity, Infinity, 0, 100, 50);
+  ctx.drawImage(bitmap, 0, 0, Infinity, Infinity, Infinity, Infinity, 100, 50);
+  ctx.drawImage(bitmap, 0, 0, Infinity, Infinity, Infinity, Infinity, Infinity, 50);
+  ctx.drawImage(bitmap, 0, 0, Infinity, Infinity, Infinity, Infinity, Infinity, Infinity);
+  ctx.drawImage(bitmap, 0, 0, Infinity, Infinity, Infinity, Infinity, 100, Infinity);
+  ctx.drawImage(bitmap, 0, 0, Infinity, Infinity, Infinity, 0, Infinity, 50);
+  ctx.drawImage(bitmap, 0, 0, Infinity, Infinity, Infinity, 0, Infinity, Infinity);
+  ctx.drawImage(bitmap, 0, 0, Infinity, Infinity, Infinity, 0, 100, Infinity);
+  ctx.drawImage(bitmap, 0, 0, Infinity, Infinity, 0, Infinity, 100, 50);
+  ctx.drawImage(bitmap, 0, 0, Infinity, Infinity, 0, Infinity, Infinity, 50);
+  ctx.drawImage(bitmap, 0, 0, Infinity, Infinity, 0, Infinity, Infinity, Infinity);
+  ctx.drawImage(bitmap, 0, 0, Infinity, Infinity, 0, Infinity, 100, Infinity);
+  ctx.drawImage(bitmap, 0, 0, Infinity, Infinity, 0, 0, Infinity, 50);
+  ctx.drawImage(bitmap, 0, 0, Infinity, Infinity, 0, 0, Infinity, Infinity);
+  ctx.drawImage(bitmap, 0, 0, Infinity, Infinity, 0, 0, 100, Infinity);
+  ctx.drawImage(bitmap, 0, 0, Infinity, 50, Infinity, 0, 100, 50);
+  ctx.drawImage(bitmap, 0, 0, Infinity, 50, Infinity, Infinity, 100, 50);
+  ctx.drawImage(bitmap, 0, 0, Infinity, 50, Infinity, Infinity, Infinity, 50);
+  ctx.drawImage(bitmap, 0, 0, Infinity, 50, Infinity, Infinity, Infinity, Infinity);
+  ctx.drawImage(bitmap, 0, 0, Infinity, 50, Infinity, Infinity, 100, Infinity);
+  ctx.drawImage(bitmap, 0, 0, Infinity, 50, Infinity, 0, Infinity, 50);
+  ctx.drawImage(bitmap, 0, 0, Infinity, 50, Infinity, 0, Infinity, Infinity);
+  ctx.drawImage(bitmap, 0, 0, Infinity, 50, Infinity, 0, 100, Infinity);
+  ctx.drawImage(bitmap, 0, 0, Infinity, 50, 0, Infinity, 100, 50);
+  ctx.drawImage(bitmap, 0, 0, Infinity, 50, 0, Infinity, Infinity, 50);
+  ctx.drawImage(bitmap, 0, 0, Infinity, 50, 0, Infinity, Infinity, Infinity);
+  ctx.drawImage(bitmap, 0, 0, Infinity, 50, 0, Infinity, 100, Infinity);
+  ctx.drawImage(bitmap, 0, 0, Infinity, 50, 0, 0, Infinity, 50);
+  ctx.drawImage(bitmap, 0, 0, Infinity, 50, 0, 0, Infinity, Infinity);
+  ctx.drawImage(bitmap, 0, 0, Infinity, 50, 0, 0, 100, Infinity);
+  ctx.drawImage(bitmap, 0, 0, 100, Infinity, Infinity, 0, 100, 50);
+  ctx.drawImage(bitmap, 0, 0, 100, Infinity, Infinity, Infinity, 100, 50);
+  ctx.drawImage(bitmap, 0, 0, 100, Infinity, Infinity, Infinity, Infinity, 50);
+  ctx.drawImage(bitmap, 0, 0, 100, Infinity, Infinity, Infinity, Infinity, Infinity);
+  ctx.drawImage(bitmap, 0, 0, 100, Infinity, Infinity, Infinity, 100, Infinity);
+  ctx.drawImage(bitmap, 0, 0, 100, Infinity, Infinity, 0, Infinity, 50);
+  ctx.drawImage(bitmap, 0, 0, 100, Infinity, Infinity, 0, Infinity, Infinity);
+  ctx.drawImage(bitmap, 0, 0, 100, Infinity, Infinity, 0, 100, Infinity);
+  ctx.drawImage(bitmap, 0, 0, 100, Infinity, 0, Infinity, 100, 50);
+  ctx.drawImage(bitmap, 0, 0, 100, Infinity, 0, Infinity, Infinity, 50);
+  ctx.drawImage(bitmap, 0, 0, 100, Infinity, 0, Infinity, Infinity, Infinity);
+  ctx.drawImage(bitmap, 0, 0, 100, Infinity, 0, Infinity, 100, Infinity);
+  ctx.drawImage(bitmap, 0, 0, 100, Infinity, 0, 0, Infinity, 50);
+  ctx.drawImage(bitmap, 0, 0, 100, Infinity, 0, 0, Infinity, Infinity);
+  ctx.drawImage(bitmap, 0, 0, 100, Infinity, 0, 0, 100, Infinity);
+  ctx.drawImage(bitmap, 0, 0, 100, 50, Infinity, Infinity, 100, 50);
+  ctx.drawImage(bitmap, 0, 0, 100, 50, Infinity, Infinity, Infinity, 50);
+  ctx.drawImage(bitmap, 0, 0, 100, 50, Infinity, Infinity, Infinity, Infinity);
+  ctx.drawImage(bitmap, 0, 0, 100, 50, Infinity, Infinity, 100, Infinity);
+  ctx.drawImage(bitmap, 0, 0, 100, 50, Infinity, 0, Infinity, 50);
+  ctx.drawImage(bitmap, 0, 0, 100, 50, Infinity, 0, Infinity, Infinity);
+  ctx.drawImage(bitmap, 0, 0, 100, 50, Infinity, 0, 100, Infinity);
+  ctx.drawImage(bitmap, 0, 0, 100, 50, 0, Infinity, Infinity, 50);
+  ctx.drawImage(bitmap, 0, 0, 100, 50, 0, Infinity, Infinity, Infinity);
+  ctx.drawImage(bitmap, 0, 0, 100, 50, 0, Infinity, 100, Infinity);
+  ctx.drawImage(bitmap, 0, 0, 100, 50, 0, 0, Infinity, Infinity);
+  _assertPixel(canvas, 50,25, 0,255,0,255);
+  t.done();
+}, "drawImage() with Infinity/NaN is ignored");
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/drawing-images-to-the-canvas/2d.drawImage.nowrap.html b/testing/web-platform/tests/html/canvas/offscreen/drawing-images-to-the-canvas/2d.drawImage.nowrap.html
new file mode 100644
index 0000000000..1182baec3b
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/drawing-images-to-the-canvas/2d.drawImage.nowrap.html
@@ -0,0 +1,30 @@
+
+
+OffscreenCanvas test: 2d.drawImage.nowrap
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.drawImage.nowrap
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Stretched images do not get pixels wrapping around the edges
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/drawing-images-to-the-canvas/2d.drawImage.nowrap.worker.js b/testing/web-platform/tests/html/canvas/offscreen/drawing-images-to-the-canvas/2d.drawImage.nowrap.worker.js
new file mode 100644
index 0000000000..47a77834c0
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/drawing-images-to-the-canvas/2d.drawImage.nowrap.worker.js
@@ -0,0 +1,26 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.drawImage.nowrap
+// Description:Stretched images do not get pixels wrapping around the edges
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+promise_test(async t => {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#0f0';
+  ctx.fillRect(0, 0, 100, 50);
+  const response = await fetch('/images/redtransparent.png');
+  const blob = await response.blob();
+  const bitmap = await createImageBitmap(blob);
+
+  ctx.drawImage(bitmap, -1950, 0, 2000, 50);
+  _assertPixelApprox(canvas, 45,25, 0,255,0,255, 2);
+  _assertPixelApprox(canvas, 50,25, 0,255,0,255, 2);
+  _assertPixelApprox(canvas, 55,25, 0,255,0,255, 2);
+  t.done();
+}, "Stretched images do not get pixels wrapping around the edges");
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/drawing-images-to-the-canvas/2d.drawImage.null.html b/testing/web-platform/tests/html/canvas/offscreen/drawing-images-to-the-canvas/2d.drawImage.null.html
new file mode 100644
index 0000000000..7a8338b353
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/drawing-images-to-the-canvas/2d.drawImage.null.html
@@ -0,0 +1,27 @@
+
+
+OffscreenCanvas test: 2d.drawImage.null
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.drawImage.null
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/drawing-images-to-the-canvas/2d.drawImage.null.worker.js b/testing/web-platform/tests/html/canvas/offscreen/drawing-images-to-the-canvas/2d.drawImage.null.worker.js
new file mode 100644
index 0000000000..329abd2221
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/drawing-images-to-the-canvas/2d.drawImage.null.worker.js
@@ -0,0 +1,22 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.drawImage.null
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  assert_throws_js(TypeError, function() { ctx.drawImage(null, 0, 0); });
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/drawing-images-to-the-canvas/2d.drawImage.path.html b/testing/web-platform/tests/html/canvas/offscreen/drawing-images-to-the-canvas/2d.drawImage.path.html
new file mode 100644
index 0000000000..063353c11f
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/drawing-images-to-the-canvas/2d.drawImage.path.html
@@ -0,0 +1,29 @@
+
+
+OffscreenCanvas test: 2d.drawImage.path
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.drawImage.path
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/drawing-images-to-the-canvas/2d.drawImage.path.worker.js b/testing/web-platform/tests/html/canvas/offscreen/drawing-images-to-the-canvas/2d.drawImage.path.worker.js
new file mode 100644
index 0000000000..3259ff0258
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/drawing-images-to-the-canvas/2d.drawImage.path.worker.js
@@ -0,0 +1,25 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.drawImage.path
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+promise_test(async t => {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#0f0';
+  ctx.rect(0, 0, 100, 50);
+  const response = await fetch('/images/red.png');
+  const blob = await response.blob();
+  const bitmap = await createImageBitmap(blob);
+
+  ctx.drawImage(bitmap, 0, 0);
+  ctx.fill();
+  _assertPixelApprox(canvas, 50,25, 0,255,0,255, 2);
+  t.done();
+}, "");
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/drawing-images-to-the-canvas/2d.drawImage.self.1.html b/testing/web-platform/tests/html/canvas/offscreen/drawing-images-to-the-canvas/2d.drawImage.self.1.html
new file mode 100644
index 0000000000..c5e51c2772
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/drawing-images-to-the-canvas/2d.drawImage.self.1.html
@@ -0,0 +1,36 @@
+
+
+OffscreenCanvas test: 2d.drawImage.self.1
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.drawImage.self.1
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/drawing-images-to-the-canvas/2d.drawImage.self.1.worker.js b/testing/web-platform/tests/html/canvas/offscreen/drawing-images-to-the-canvas/2d.drawImage.self.1.worker.js
new file mode 100644
index 0000000000..a9af88d13a
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/drawing-images-to-the-canvas/2d.drawImage.self.1.worker.js
@@ -0,0 +1,31 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.drawImage.self.1
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#0f0';
+  ctx.fillRect(0, 0, 50, 50);
+  ctx.fillStyle = '#f00';
+  ctx.fillRect(50, 0, 50, 50);
+  ctx.drawImage(canvas, 50, 0);
+
+  _assertPixelApprox(canvas, 0,0, 0,255,0,255, 2);
+  _assertPixelApprox(canvas, 99,0, 0,255,0,255, 2);
+  _assertPixelApprox(canvas, 0,49, 0,255,0,255, 2);
+  _assertPixelApprox(canvas, 99,49, 0,255,0,255, 2);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/drawing-images-to-the-canvas/2d.drawImage.self.2.html b/testing/web-platform/tests/html/canvas/offscreen/drawing-images-to-the-canvas/2d.drawImage.self.2.html
new file mode 100644
index 0000000000..ac67476966
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/drawing-images-to-the-canvas/2d.drawImage.self.2.html
@@ -0,0 +1,38 @@
+
+
+OffscreenCanvas test: 2d.drawImage.self.2
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.drawImage.self.2
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/drawing-images-to-the-canvas/2d.drawImage.self.2.worker.js b/testing/web-platform/tests/html/canvas/offscreen/drawing-images-to-the-canvas/2d.drawImage.self.2.worker.js
new file mode 100644
index 0000000000..802d2d8c52
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/drawing-images-to-the-canvas/2d.drawImage.self.2.worker.js
@@ -0,0 +1,33 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.drawImage.self.2
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#0f0';
+  ctx.fillRect(0, 1, 100, 49);
+  ctx.fillStyle = '#f00';
+  ctx.fillRect(0, 0, 100, 1);
+  ctx.drawImage(canvas, 0, 1);
+  ctx.fillStyle = '#0f0';
+  ctx.fillRect(0, 0, 100, 2);
+
+  _assertPixelApprox(canvas, 0,0, 0,255,0,255, 2);
+  _assertPixelApprox(canvas, 99,0, 0,255,0,255, 2);
+  _assertPixelApprox(canvas, 0,49, 0,255,0,255, 2);
+  _assertPixelApprox(canvas, 99,49, 0,255,0,255, 2);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/drawing-images-to-the-canvas/2d.drawImage.svg.html b/testing/web-platform/tests/html/canvas/offscreen/drawing-images-to-the-canvas/2d.drawImage.svg.html
new file mode 100644
index 0000000000..50aeabd286
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/drawing-images-to-the-canvas/2d.drawImage.svg.html
@@ -0,0 +1,35 @@
+
+
+OffscreenCanvas test: 2d.drawImage.svg
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.drawImage.svg
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              drawImage() of an SVG image
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/drawing-images-to-the-canvas/2d.drawImage.svg.worker.js b/testing/web-platform/tests/html/canvas/offscreen/drawing-images-to-the-canvas/2d.drawImage.svg.worker.js
new file mode 100644
index 0000000000..a15371db39
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/drawing-images-to-the-canvas/2d.drawImage.svg.worker.js
@@ -0,0 +1,31 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.drawImage.svg
+// Description:drawImage() of an SVG image
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+promise_test(async t => {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  var promise = new Promise(function(resolve, reject) {
+    var xhr = new XMLHttpRequest();
+    xhr.open("GET", '/images/green.svg');
+    xhr.responseType = 'blob';
+    xhr.send();
+    xhr.onload = function() {
+      resolve(xhr.response);
+    };
+  });
+  promise.then(function(response) {
+    createImageBitmap(response).then(bitmap => {
+      ctx.drawImage(bitmap, 0, 0);
+      _assertPixelApprox(canvas, 50,25, 0,255,0,255, 2);
+    });
+  });
+  t.done();
+}, "drawImage() of an SVG image");
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/drawing-images-to-the-canvas/2d.drawImage.transform.html b/testing/web-platform/tests/html/canvas/offscreen/drawing-images-to-the-canvas/2d.drawImage.transform.html
new file mode 100644
index 0000000000..ca148c1a68
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/drawing-images-to-the-canvas/2d.drawImage.transform.html
@@ -0,0 +1,29 @@
+
+
+OffscreenCanvas test: 2d.drawImage.transform
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.drawImage.transform
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/drawing-images-to-the-canvas/2d.drawImage.transform.worker.js b/testing/web-platform/tests/html/canvas/offscreen/drawing-images-to-the-canvas/2d.drawImage.transform.worker.js
new file mode 100644
index 0000000000..4a4cd07be9
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/drawing-images-to-the-canvas/2d.drawImage.transform.worker.js
@@ -0,0 +1,25 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.drawImage.transform
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+promise_test(async t => {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#0f0';
+  ctx.fillRect(0, 0, 100, 50);
+  ctx.translate(100, 0);
+  const response = await fetch('/images/red.png');
+  const blob = await response.blob();
+  const bitmap = await createImageBitmap(blob);
+
+  ctx.drawImage(bitmap, 0, 0);
+  _assertPixelApprox(canvas, 50,25, 0,255,0,255, 2);
+  t.done();
+}, "");
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/drawing-images-to-the-canvas/2d.drawImage.wrongtype.html b/testing/web-platform/tests/html/canvas/offscreen/drawing-images-to-the-canvas/2d.drawImage.wrongtype.html
new file mode 100644
index 0000000000..96906e8fc3
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/drawing-images-to-the-canvas/2d.drawImage.wrongtype.html
@@ -0,0 +1,29 @@
+
+
+OffscreenCanvas test: 2d.drawImage.wrongtype
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.drawImage.wrongtype
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Incorrect image types in drawImage do not match any defined overloads, so WebIDL throws a TypeError
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/drawing-images-to-the-canvas/2d.drawImage.wrongtype.worker.js b/testing/web-platform/tests/html/canvas/offscreen/drawing-images-to-the-canvas/2d.drawImage.wrongtype.worker.js
new file mode 100644
index 0000000000..176e418d64
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/drawing-images-to-the-canvas/2d.drawImage.wrongtype.worker.js
@@ -0,0 +1,24 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.drawImage.wrongtype
+// Description:Incorrect image types in drawImage do not match any defined overloads, so WebIDL throws a TypeError
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("Incorrect image types in drawImage do not match any defined overloads, so WebIDL throws a TypeError");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  assert_throws_js(TypeError, function() { ctx.drawImage(undefined, 0, 0); });
+  assert_throws_js(TypeError, function() { ctx.drawImage(0, 0, 0); });
+  assert_throws_js(TypeError, function() { ctx.drawImage("", 0, 0); });
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/drawing-images-to-the-canvas/2d.drawImage.zerocanvas.html b/testing/web-platform/tests/html/canvas/offscreen/drawing-images-to-the-canvas/2d.drawImage.zerocanvas.html
new file mode 100644
index 0000000000..a30c300730
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/drawing-images-to-the-canvas/2d.drawImage.zerocanvas.html
@@ -0,0 +1,36 @@
+
+
+OffscreenCanvas test: 2d.drawImage.zerocanvas
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.drawImage.zerocanvas
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/drawing-images-to-the-canvas/2d.drawImage.zerocanvas.worker.js b/testing/web-platform/tests/html/canvas/offscreen/drawing-images-to-the-canvas/2d.drawImage.zerocanvas.worker.js
new file mode 100644
index 0000000000..41346ad328
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/drawing-images-to-the-canvas/2d.drawImage.zerocanvas.worker.js
@@ -0,0 +1,31 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.drawImage.zerocanvas
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  var offscreenCanvas2 = new OffscreenCanvas(0, 10);
+  assert_throws_dom("INVALID_STATE_ERR", function() { ctx.drawImage(offscreenCanvas2, 0, 0); });
+
+  offscreenCanvas2.width = 10;
+  offscreenCanvas2.height = 0;
+  assert_throws_dom("INVALID_STATE_ERR", function() { ctx.drawImage(offscreenCanvas2, 0, 0); });
+
+  offscreenCanvas2.width = 0;
+  offscreenCanvas2.height = 0;
+  assert_throws_dom("INVALID_STATE_ERR", function() { ctx.drawImage(offscreenCanvas2, 0, 0); });
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/drawing-images-to-the-canvas/2d.drawImage.zerosource.html b/testing/web-platform/tests/html/canvas/offscreen/drawing-images-to-the-canvas/2d.drawImage.zerosource.html
new file mode 100644
index 0000000000..0239c5356d
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/drawing-images-to-the-canvas/2d.drawImage.zerosource.html
@@ -0,0 +1,29 @@
+
+
+OffscreenCanvas test: 2d.drawImage.zerosource
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.drawImage.zerosource
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              drawImage with zero-sized source rectangle draws nothing without exception
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/drawing-images-to-the-canvas/2d.drawImage.zerosource.image.html b/testing/web-platform/tests/html/canvas/offscreen/drawing-images-to-the-canvas/2d.drawImage.zerosource.image.html
new file mode 100644
index 0000000000..4941d37347
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/drawing-images-to-the-canvas/2d.drawImage.zerosource.image.html
@@ -0,0 +1,37 @@
+
+
+OffscreenCanvas test: 2d.drawImage.zerosource.image
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.drawImage.zerosource.image
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              drawImage with zero-sized source rectangle from image draws nothing without exception
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/drawing-images-to-the-canvas/2d.drawImage.zerosource.image.worker.js b/testing/web-platform/tests/html/canvas/offscreen/drawing-images-to-the-canvas/2d.drawImage.zerosource.image.worker.js
new file mode 100644
index 0000000000..a3182c9b73
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/drawing-images-to-the-canvas/2d.drawImage.zerosource.image.worker.js
@@ -0,0 +1,33 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.drawImage.zerosource.image
+// Description:drawImage with zero-sized source rectangle from image draws nothing without exception
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+promise_test(async t => {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#0f0';
+  ctx.fillRect(0, 0, 100, 50);
+  var promise = new Promise(function(resolve, reject) {
+    var xhr = new XMLHttpRequest();
+    xhr.open("GET", '/images/red-zerowidth.svg');
+    xhr.responseType = 'blob';
+    xhr.send();
+    xhr.onload = function() {
+      resolve(xhr.response);
+    };
+  });
+  promise.then(function(response) {
+    createImageBitmap(response).then(bitmap => {
+      ctx.drawImage(bitmap, 0, 0, 100, 50);
+      _assertPixel(canvas, 50,25, 0,255,0,255);
+    });
+  });
+  t.done();
+}, "drawImage with zero-sized source rectangle from image draws nothing without exception");
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/drawing-images-to-the-canvas/2d.drawImage.zerosource.worker.js b/testing/web-platform/tests/html/canvas/offscreen/drawing-images-to-the-canvas/2d.drawImage.zerosource.worker.js
new file mode 100644
index 0000000000..a80bfff562
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/drawing-images-to-the-canvas/2d.drawImage.zerosource.worker.js
@@ -0,0 +1,25 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.drawImage.zerosource
+// Description:drawImage with zero-sized source rectangle draws nothing without exception
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+promise_test(async t => {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#0f0';
+  ctx.fillRect(0, 0, 100, 50);
+  const response = await fetch('/images/red.png');
+  const blob = await response.blob();
+  const bitmap = await createImageBitmap(blob);
+  ctx.drawImage(bitmap, 10, 10, 0, 1, 0, 0, 100, 50);
+  ctx.drawImage(bitmap, 10, 10, 1, 0, 0, 0, 100, 50);
+  ctx.drawImage(bitmap, 10, 10, 0, 0, 0, 0, 100, 50);
+  _assertPixelApprox(canvas, 50,25, 0,255,0,255, 2);
+  t.done();
+}, "drawImage with zero-sized source rectangle draws nothing without exception");
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/drawing-rectangles-to-the-canvas/2d.clearRect.basic.html b/testing/web-platform/tests/html/canvas/offscreen/drawing-rectangles-to-the-canvas/2d.clearRect.basic.html
new file mode 100644
index 0000000000..02a9cb37ca
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/drawing-rectangles-to-the-canvas/2d.clearRect.basic.html
@@ -0,0 +1,30 @@
+
+
+OffscreenCanvas test: 2d.clearRect.basic
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.clearRect.basic
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              clearRect clears to transparent black
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/drawing-rectangles-to-the-canvas/2d.clearRect.basic.worker.js b/testing/web-platform/tests/html/canvas/offscreen/drawing-rectangles-to-the-canvas/2d.clearRect.basic.worker.js
new file mode 100644
index 0000000000..8f3a7e46de
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/drawing-rectangles-to-the-canvas/2d.clearRect.basic.worker.js
@@ -0,0 +1,25 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.clearRect.basic
+// Description:clearRect clears to transparent black
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("clearRect clears to transparent black");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#f00';
+  ctx.fillRect(0, 0, 100, 50);
+  ctx.clearRect(0, 0, 100, 50);
+  _assertPixel(canvas, 50,25, 0,0,0,0);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/drawing-rectangles-to-the-canvas/2d.clearRect.clip.html b/testing/web-platform/tests/html/canvas/offscreen/drawing-rectangles-to-the-canvas/2d.clearRect.clip.html
new file mode 100644
index 0000000000..2f0f171601
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/drawing-rectangles-to-the-canvas/2d.clearRect.clip.html
@@ -0,0 +1,35 @@
+
+
+OffscreenCanvas test: 2d.clearRect.clip
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.clearRect.clip
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              clearRect is affected by clipping regions
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/drawing-rectangles-to-the-canvas/2d.clearRect.clip.worker.js b/testing/web-platform/tests/html/canvas/offscreen/drawing-rectangles-to-the-canvas/2d.clearRect.clip.worker.js
new file mode 100644
index 0000000000..3d3caedbb1
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/drawing-rectangles-to-the-canvas/2d.clearRect.clip.worker.js
@@ -0,0 +1,30 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.clearRect.clip
+// Description:clearRect is affected by clipping regions
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("clearRect is affected by clipping regions");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#0f0';
+  ctx.fillRect(0, 0, 100, 50);
+  ctx.beginPath();
+  ctx.rect(0, 0, 16, 16);
+  ctx.clip();
+  ctx.clearRect(0, 0, 100, 50);
+  ctx.fillStyle = '#0f0';
+  ctx.fillRect(0, 0, 16, 16);
+  _assertPixel(canvas, 50,25, 0,255,0,255);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/drawing-rectangles-to-the-canvas/2d.clearRect.globalalpha.html b/testing/web-platform/tests/html/canvas/offscreen/drawing-rectangles-to-the-canvas/2d.clearRect.globalalpha.html
new file mode 100644
index 0000000000..45875c5270
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/drawing-rectangles-to-the-canvas/2d.clearRect.globalalpha.html
@@ -0,0 +1,31 @@
+
+
+OffscreenCanvas test: 2d.clearRect.globalalpha
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.clearRect.globalalpha
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              clearRect is not affected by globalAlpha
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/drawing-rectangles-to-the-canvas/2d.clearRect.globalalpha.worker.js b/testing/web-platform/tests/html/canvas/offscreen/drawing-rectangles-to-the-canvas/2d.clearRect.globalalpha.worker.js
new file mode 100644
index 0000000000..1b07b66cb3
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/drawing-rectangles-to-the-canvas/2d.clearRect.globalalpha.worker.js
@@ -0,0 +1,26 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.clearRect.globalalpha
+// Description:clearRect is not affected by globalAlpha
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("clearRect is not affected by globalAlpha");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#f00';
+  ctx.fillRect(0, 0, 100, 50);
+  ctx.globalAlpha = 0.1;
+  ctx.clearRect(0, 0, 100, 50);
+  _assertPixel(canvas, 50,25, 0,0,0,0);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/drawing-rectangles-to-the-canvas/2d.clearRect.globalcomposite.html b/testing/web-platform/tests/html/canvas/offscreen/drawing-rectangles-to-the-canvas/2d.clearRect.globalcomposite.html
new file mode 100644
index 0000000000..b57be641ca
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/drawing-rectangles-to-the-canvas/2d.clearRect.globalcomposite.html
@@ -0,0 +1,31 @@
+
+
+OffscreenCanvas test: 2d.clearRect.globalcomposite
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.clearRect.globalcomposite
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              clearRect is not affected by globalCompositeOperation
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/drawing-rectangles-to-the-canvas/2d.clearRect.globalcomposite.worker.js b/testing/web-platform/tests/html/canvas/offscreen/drawing-rectangles-to-the-canvas/2d.clearRect.globalcomposite.worker.js
new file mode 100644
index 0000000000..e8c1c9b27c
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/drawing-rectangles-to-the-canvas/2d.clearRect.globalcomposite.worker.js
@@ -0,0 +1,26 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.clearRect.globalcomposite
+// Description:clearRect is not affected by globalCompositeOperation
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("clearRect is not affected by globalCompositeOperation");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#f00';
+  ctx.fillRect(0, 0, 100, 50);
+  ctx.globalCompositeOperation = 'destination-atop';
+  ctx.clearRect(0, 0, 100, 50);
+  _assertPixel(canvas, 50,25, 0,0,0,0);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/drawing-rectangles-to-the-canvas/2d.clearRect.negative.html b/testing/web-platform/tests/html/canvas/offscreen/drawing-rectangles-to-the-canvas/2d.clearRect.negative.html
new file mode 100644
index 0000000000..12126dfe87
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/drawing-rectangles-to-the-canvas/2d.clearRect.negative.html
@@ -0,0 +1,36 @@
+
+
+OffscreenCanvas test: 2d.clearRect.negative
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.clearRect.negative
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              clearRect of negative sizes works
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/drawing-rectangles-to-the-canvas/2d.clearRect.negative.worker.js b/testing/web-platform/tests/html/canvas/offscreen/drawing-rectangles-to-the-canvas/2d.clearRect.negative.worker.js
new file mode 100644
index 0000000000..62846aec8e
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/drawing-rectangles-to-the-canvas/2d.clearRect.negative.worker.js
@@ -0,0 +1,31 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.clearRect.negative
+// Description:clearRect of negative sizes works
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("clearRect of negative sizes works");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#f00';
+  ctx.fillRect(0, 0, 100, 50);
+  ctx.clearRect(0, 0, 50, 25);
+  ctx.clearRect(100, 0, -50, 25);
+  ctx.clearRect(0, 50, 50, -25);
+  ctx.clearRect(100, 50, -50, -25);
+  _assertPixel(canvas, 25,12, 0,0,0,0);
+  _assertPixel(canvas, 75,12, 0,0,0,0);
+  _assertPixel(canvas, 25,37, 0,0,0,0);
+  _assertPixel(canvas, 75,37, 0,0,0,0);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/drawing-rectangles-to-the-canvas/2d.clearRect.nonfinite.html b/testing/web-platform/tests/html/canvas/offscreen/drawing-rectangles-to-the-canvas/2d.clearRect.nonfinite.html
new file mode 100644
index 0000000000..3327834146
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/drawing-rectangles-to-the-canvas/2d.clearRect.nonfinite.html
@@ -0,0 +1,52 @@
+
+
+OffscreenCanvas test: 2d.clearRect.nonfinite
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.clearRect.nonfinite
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              clearRect() with Infinity/NaN is ignored
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/drawing-rectangles-to-the-canvas/2d.clearRect.nonfinite.worker.js b/testing/web-platform/tests/html/canvas/offscreen/drawing-rectangles-to-the-canvas/2d.clearRect.nonfinite.worker.js
new file mode 100644
index 0000000000..e2525df3be
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/drawing-rectangles-to-the-canvas/2d.clearRect.nonfinite.worker.js
@@ -0,0 +1,47 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.clearRect.nonfinite
+// Description:clearRect() with Infinity/NaN is ignored
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("clearRect() with Infinity/NaN is ignored");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#0f0';
+  ctx.fillRect(0, 0, 100, 50);
+  ctx.clearRect(Infinity, 0, 100, 50);
+  ctx.clearRect(-Infinity, 0, 100, 50);
+  ctx.clearRect(NaN, 0, 100, 50);
+  ctx.clearRect(0, Infinity, 100, 50);
+  ctx.clearRect(0, -Infinity, 100, 50);
+  ctx.clearRect(0, NaN, 100, 50);
+  ctx.clearRect(0, 0, Infinity, 50);
+  ctx.clearRect(0, 0, -Infinity, 50);
+  ctx.clearRect(0, 0, NaN, 50);
+  ctx.clearRect(0, 0, 100, Infinity);
+  ctx.clearRect(0, 0, 100, -Infinity);
+  ctx.clearRect(0, 0, 100, NaN);
+  ctx.clearRect(Infinity, Infinity, 100, 50);
+  ctx.clearRect(Infinity, Infinity, Infinity, 50);
+  ctx.clearRect(Infinity, Infinity, Infinity, Infinity);
+  ctx.clearRect(Infinity, Infinity, 100, Infinity);
+  ctx.clearRect(Infinity, 0, Infinity, 50);
+  ctx.clearRect(Infinity, 0, Infinity, Infinity);
+  ctx.clearRect(Infinity, 0, 100, Infinity);
+  ctx.clearRect(0, Infinity, Infinity, 50);
+  ctx.clearRect(0, Infinity, Infinity, Infinity);
+  ctx.clearRect(0, Infinity, 100, Infinity);
+  ctx.clearRect(0, 0, Infinity, Infinity);
+  _assertPixel(canvas, 50,25, 0,255,0,255);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/drawing-rectangles-to-the-canvas/2d.clearRect.path.html b/testing/web-platform/tests/html/canvas/offscreen/drawing-rectangles-to-the-canvas/2d.clearRect.path.html
new file mode 100644
index 0000000000..25ad954d06
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/drawing-rectangles-to-the-canvas/2d.clearRect.path.html
@@ -0,0 +1,32 @@
+
+
+OffscreenCanvas test: 2d.clearRect.path
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.clearRect.path
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              clearRect does not affect the current path
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/drawing-rectangles-to-the-canvas/2d.clearRect.path.worker.js b/testing/web-platform/tests/html/canvas/offscreen/drawing-rectangles-to-the-canvas/2d.clearRect.path.worker.js
new file mode 100644
index 0000000000..40f51f9f0e
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/drawing-rectangles-to-the-canvas/2d.clearRect.path.worker.js
@@ -0,0 +1,27 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.clearRect.path
+// Description:clearRect does not affect the current path
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("clearRect does not affect the current path");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#0f0';
+  ctx.beginPath();
+  ctx.rect(0, 0, 100, 50);
+  ctx.clearRect(0, 0, 16, 16);
+  ctx.fill();
+  _assertPixel(canvas, 50,25, 0,255,0,255);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/drawing-rectangles-to-the-canvas/2d.clearRect.shadow.html b/testing/web-platform/tests/html/canvas/offscreen/drawing-rectangles-to-the-canvas/2d.clearRect.shadow.html
new file mode 100644
index 0000000000..3b3e41c19c
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/drawing-rectangles-to-the-canvas/2d.clearRect.shadow.html
@@ -0,0 +1,34 @@
+
+
+OffscreenCanvas test: 2d.clearRect.shadow
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.clearRect.shadow
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              clearRect does not draw shadows
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/drawing-rectangles-to-the-canvas/2d.clearRect.shadow.worker.js b/testing/web-platform/tests/html/canvas/offscreen/drawing-rectangles-to-the-canvas/2d.clearRect.shadow.worker.js
new file mode 100644
index 0000000000..a1ec8ac7ae
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/drawing-rectangles-to-the-canvas/2d.clearRect.shadow.worker.js
@@ -0,0 +1,29 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.clearRect.shadow
+// Description:clearRect does not draw shadows
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("clearRect does not draw shadows");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#0f0';
+  ctx.fillRect(0, 0, 100, 50);
+  ctx.shadowColor = '#f00';
+  ctx.shadowBlur = 0;
+  ctx.shadowOffsetX = 0;
+  ctx.shadowOffsetY = 50;
+  ctx.clearRect(0, -50, 100, 50);
+  _assertPixel(canvas, 50,25, 0,255,0,255);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/drawing-rectangles-to-the-canvas/2d.clearRect.transform.html b/testing/web-platform/tests/html/canvas/offscreen/drawing-rectangles-to-the-canvas/2d.clearRect.transform.html
new file mode 100644
index 0000000000..8208b6f657
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/drawing-rectangles-to-the-canvas/2d.clearRect.transform.html
@@ -0,0 +1,32 @@
+
+
+OffscreenCanvas test: 2d.clearRect.transform
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.clearRect.transform
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              clearRect is affected by transforms
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/drawing-rectangles-to-the-canvas/2d.clearRect.transform.worker.js b/testing/web-platform/tests/html/canvas/offscreen/drawing-rectangles-to-the-canvas/2d.clearRect.transform.worker.js
new file mode 100644
index 0000000000..f176f3da8a
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/drawing-rectangles-to-the-canvas/2d.clearRect.transform.worker.js
@@ -0,0 +1,27 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.clearRect.transform
+// Description:clearRect is affected by transforms
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("clearRect is affected by transforms");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#f00';
+  ctx.fillRect(0, 0, 100, 50);
+  ctx.scale(10, 10);
+  ctx.translate(0, 5);
+  ctx.clearRect(0, -5, 10, 5);
+  _assertPixel(canvas, 50,25, 0,0,0,0);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/drawing-rectangles-to-the-canvas/2d.clearRect.zero.html b/testing/web-platform/tests/html/canvas/offscreen/drawing-rectangles-to-the-canvas/2d.clearRect.zero.html
new file mode 100644
index 0000000000..461c318d24
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/drawing-rectangles-to-the-canvas/2d.clearRect.zero.html
@@ -0,0 +1,32 @@
+
+
+OffscreenCanvas test: 2d.clearRect.zero
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.clearRect.zero
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              clearRect of zero pixels has no effect
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/drawing-rectangles-to-the-canvas/2d.clearRect.zero.worker.js b/testing/web-platform/tests/html/canvas/offscreen/drawing-rectangles-to-the-canvas/2d.clearRect.zero.worker.js
new file mode 100644
index 0000000000..b6f42551a2
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/drawing-rectangles-to-the-canvas/2d.clearRect.zero.worker.js
@@ -0,0 +1,27 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.clearRect.zero
+// Description:clearRect of zero pixels has no effect
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("clearRect of zero pixels has no effect");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#0f0';
+  ctx.fillRect(0, 0, 100, 50);
+  ctx.clearRect(0, 0, 100, 0);
+  ctx.clearRect(0, 0, 0, 50);
+  ctx.clearRect(0, 0, 0, 0);
+  _assertPixel(canvas, 50,25, 0,255,0,255);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/drawing-rectangles-to-the-canvas/2d.fillRect.basic.html b/testing/web-platform/tests/html/canvas/offscreen/drawing-rectangles-to-the-canvas/2d.fillRect.basic.html
new file mode 100644
index 0000000000..3e65472b83
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/drawing-rectangles-to-the-canvas/2d.fillRect.basic.html
@@ -0,0 +1,29 @@
+
+
+OffscreenCanvas test: 2d.fillRect.basic
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.fillRect.basic
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              fillRect works
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/drawing-rectangles-to-the-canvas/2d.fillRect.basic.worker.js b/testing/web-platform/tests/html/canvas/offscreen/drawing-rectangles-to-the-canvas/2d.fillRect.basic.worker.js
new file mode 100644
index 0000000000..69918278e4
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/drawing-rectangles-to-the-canvas/2d.fillRect.basic.worker.js
@@ -0,0 +1,24 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.fillRect.basic
+// Description:fillRect works
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("fillRect works");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#0f0';
+  ctx.fillRect(0, 0, 100, 50);
+  _assertPixel(canvas, 50,25, 0,255,0,255);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/drawing-rectangles-to-the-canvas/2d.fillRect.clip.html b/testing/web-platform/tests/html/canvas/offscreen/drawing-rectangles-to-the-canvas/2d.fillRect.clip.html
new file mode 100644
index 0000000000..3b26960e24
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/drawing-rectangles-to-the-canvas/2d.fillRect.clip.html
@@ -0,0 +1,36 @@
+
+
+OffscreenCanvas test: 2d.fillRect.clip
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.fillRect.clip
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              fillRect is affected by clipping regions
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/drawing-rectangles-to-the-canvas/2d.fillRect.clip.worker.js b/testing/web-platform/tests/html/canvas/offscreen/drawing-rectangles-to-the-canvas/2d.fillRect.clip.worker.js
new file mode 100644
index 0000000000..890b31e342
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/drawing-rectangles-to-the-canvas/2d.fillRect.clip.worker.js
@@ -0,0 +1,31 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.fillRect.clip
+// Description:fillRect is affected by clipping regions
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("fillRect is affected by clipping regions");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#0f0';
+  ctx.fillRect(0, 0, 100, 50);
+  ctx.beginPath();
+  ctx.rect(0, 0, 16, 16);
+  ctx.clip();
+  ctx.fillStyle = '#f00';
+  ctx.fillRect(0, 0, 100, 50);
+  ctx.fillStyle = '#0f0';
+  ctx.fillRect(0, 0, 16, 16);
+  _assertPixel(canvas, 50,25, 0,255,0,255);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/drawing-rectangles-to-the-canvas/2d.fillRect.negative.html b/testing/web-platform/tests/html/canvas/offscreen/drawing-rectangles-to-the-canvas/2d.fillRect.negative.html
new file mode 100644
index 0000000000..2a1942811f
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/drawing-rectangles-to-the-canvas/2d.fillRect.negative.html
@@ -0,0 +1,37 @@
+
+
+OffscreenCanvas test: 2d.fillRect.negative
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.fillRect.negative
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              fillRect of negative sizes works
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/drawing-rectangles-to-the-canvas/2d.fillRect.negative.worker.js b/testing/web-platform/tests/html/canvas/offscreen/drawing-rectangles-to-the-canvas/2d.fillRect.negative.worker.js
new file mode 100644
index 0000000000..5df1652331
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/drawing-rectangles-to-the-canvas/2d.fillRect.negative.worker.js
@@ -0,0 +1,32 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.fillRect.negative
+// Description:fillRect of negative sizes works
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("fillRect of negative sizes works");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#f00';
+  ctx.fillRect(0, 0, 100, 50);
+  ctx.fillStyle = '#0f0';
+  ctx.fillRect(0, 0, 50, 25);
+  ctx.fillRect(100, 0, -50, 25);
+  ctx.fillRect(0, 50, 50, -25);
+  ctx.fillRect(100, 50, -50, -25);
+  _assertPixel(canvas, 25,12, 0,255,0,255);
+  _assertPixel(canvas, 75,12, 0,255,0,255);
+  _assertPixel(canvas, 25,37, 0,255,0,255);
+  _assertPixel(canvas, 75,37, 0,255,0,255);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/drawing-rectangles-to-the-canvas/2d.fillRect.nonfinite.html b/testing/web-platform/tests/html/canvas/offscreen/drawing-rectangles-to-the-canvas/2d.fillRect.nonfinite.html
new file mode 100644
index 0000000000..e44a9d4b78
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/drawing-rectangles-to-the-canvas/2d.fillRect.nonfinite.html
@@ -0,0 +1,53 @@
+
+
+OffscreenCanvas test: 2d.fillRect.nonfinite
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.fillRect.nonfinite
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              fillRect() with Infinity/NaN is ignored
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/drawing-rectangles-to-the-canvas/2d.fillRect.nonfinite.worker.js b/testing/web-platform/tests/html/canvas/offscreen/drawing-rectangles-to-the-canvas/2d.fillRect.nonfinite.worker.js
new file mode 100644
index 0000000000..bc0170918c
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/drawing-rectangles-to-the-canvas/2d.fillRect.nonfinite.worker.js
@@ -0,0 +1,48 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.fillRect.nonfinite
+// Description:fillRect() with Infinity/NaN is ignored
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("fillRect() with Infinity/NaN is ignored");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#0f0';
+  ctx.fillRect(0, 0, 100, 50);
+  ctx.fillStyle = '#f00';
+  ctx.fillRect(Infinity, 0, 100, 50);
+  ctx.fillRect(-Infinity, 0, 100, 50);
+  ctx.fillRect(NaN, 0, 100, 50);
+  ctx.fillRect(0, Infinity, 100, 50);
+  ctx.fillRect(0, -Infinity, 100, 50);
+  ctx.fillRect(0, NaN, 100, 50);
+  ctx.fillRect(0, 0, Infinity, 50);
+  ctx.fillRect(0, 0, -Infinity, 50);
+  ctx.fillRect(0, 0, NaN, 50);
+  ctx.fillRect(0, 0, 100, Infinity);
+  ctx.fillRect(0, 0, 100, -Infinity);
+  ctx.fillRect(0, 0, 100, NaN);
+  ctx.fillRect(Infinity, Infinity, 100, 50);
+  ctx.fillRect(Infinity, Infinity, Infinity, 50);
+  ctx.fillRect(Infinity, Infinity, Infinity, Infinity);
+  ctx.fillRect(Infinity, Infinity, 100, Infinity);
+  ctx.fillRect(Infinity, 0, Infinity, 50);
+  ctx.fillRect(Infinity, 0, Infinity, Infinity);
+  ctx.fillRect(Infinity, 0, 100, Infinity);
+  ctx.fillRect(0, Infinity, Infinity, 50);
+  ctx.fillRect(0, Infinity, Infinity, Infinity);
+  ctx.fillRect(0, Infinity, 100, Infinity);
+  ctx.fillRect(0, 0, Infinity, Infinity);
+  _assertPixel(canvas, 50,25, 0,255,0,255);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/drawing-rectangles-to-the-canvas/2d.fillRect.path.html b/testing/web-platform/tests/html/canvas/offscreen/drawing-rectangles-to-the-canvas/2d.fillRect.path.html
new file mode 100644
index 0000000000..bcf7ee5a97
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/drawing-rectangles-to-the-canvas/2d.fillRect.path.html
@@ -0,0 +1,33 @@
+
+
+OffscreenCanvas test: 2d.fillRect.path
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.fillRect.path
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              fillRect does not affect the current path
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/drawing-rectangles-to-the-canvas/2d.fillRect.path.worker.js b/testing/web-platform/tests/html/canvas/offscreen/drawing-rectangles-to-the-canvas/2d.fillRect.path.worker.js
new file mode 100644
index 0000000000..ddbfc4a96d
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/drawing-rectangles-to-the-canvas/2d.fillRect.path.worker.js
@@ -0,0 +1,28 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.fillRect.path
+// Description:fillRect does not affect the current path
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("fillRect does not affect the current path");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.beginPath();
+  ctx.rect(0, 0, 100, 50);
+  ctx.fillStyle = '#f00';
+  ctx.fillRect(0, 0, 16, 16);
+  ctx.fillStyle = '#0f0';
+  ctx.fill();
+  _assertPixel(canvas, 50,25, 0,255,0,255);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/drawing-rectangles-to-the-canvas/2d.fillRect.shadow.html b/testing/web-platform/tests/html/canvas/offscreen/drawing-rectangles-to-the-canvas/2d.fillRect.shadow.html
new file mode 100644
index 0000000000..8a8e38070c
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/drawing-rectangles-to-the-canvas/2d.fillRect.shadow.html
@@ -0,0 +1,34 @@
+
+
+OffscreenCanvas test: 2d.fillRect.shadow
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.fillRect.shadow
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              fillRect draws shadows
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/drawing-rectangles-to-the-canvas/2d.fillRect.shadow.worker.js b/testing/web-platform/tests/html/canvas/offscreen/drawing-rectangles-to-the-canvas/2d.fillRect.shadow.worker.js
new file mode 100644
index 0000000000..ff4ef0ca2d
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/drawing-rectangles-to-the-canvas/2d.fillRect.shadow.worker.js
@@ -0,0 +1,29 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.fillRect.shadow
+// Description:fillRect draws shadows
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("fillRect draws shadows");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#f00';
+  ctx.fillRect(0, 0, 100, 50);
+  ctx.shadowColor = '#0f0';
+  ctx.shadowBlur = 0;
+  ctx.shadowOffsetX = 0;
+  ctx.shadowOffsetY = 50;
+  ctx.fillRect(0, -50, 100, 50);
+  _assertPixel(canvas, 50,25, 0,255,0,255);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/drawing-rectangles-to-the-canvas/2d.fillRect.transform.html b/testing/web-platform/tests/html/canvas/offscreen/drawing-rectangles-to-the-canvas/2d.fillRect.transform.html
new file mode 100644
index 0000000000..19cb6ac77a
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/drawing-rectangles-to-the-canvas/2d.fillRect.transform.html
@@ -0,0 +1,31 @@
+
+
+OffscreenCanvas test: 2d.fillRect.transform
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.fillRect.transform
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              fillRect is affected by transforms
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/drawing-rectangles-to-the-canvas/2d.fillRect.transform.worker.js b/testing/web-platform/tests/html/canvas/offscreen/drawing-rectangles-to-the-canvas/2d.fillRect.transform.worker.js
new file mode 100644
index 0000000000..a7f328955b
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/drawing-rectangles-to-the-canvas/2d.fillRect.transform.worker.js
@@ -0,0 +1,26 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.fillRect.transform
+// Description:fillRect is affected by transforms
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("fillRect is affected by transforms");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.scale(10, 10);
+  ctx.translate(0, 5);
+  ctx.fillStyle = '#0f0';
+  ctx.fillRect(0, -5, 10, 5);
+  _assertPixel(canvas, 50,25, 0,255,0,255);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/drawing-rectangles-to-the-canvas/2d.fillRect.zero.html b/testing/web-platform/tests/html/canvas/offscreen/drawing-rectangles-to-the-canvas/2d.fillRect.zero.html
new file mode 100644
index 0000000000..3ec78ba18a
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/drawing-rectangles-to-the-canvas/2d.fillRect.zero.html
@@ -0,0 +1,33 @@
+
+
+OffscreenCanvas test: 2d.fillRect.zero
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.fillRect.zero
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              fillRect of zero pixels has no effect
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/drawing-rectangles-to-the-canvas/2d.fillRect.zero.worker.js b/testing/web-platform/tests/html/canvas/offscreen/drawing-rectangles-to-the-canvas/2d.fillRect.zero.worker.js
new file mode 100644
index 0000000000..a310d3ff28
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/drawing-rectangles-to-the-canvas/2d.fillRect.zero.worker.js
@@ -0,0 +1,28 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.fillRect.zero
+// Description:fillRect of zero pixels has no effect
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("fillRect of zero pixels has no effect");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#0f0';
+  ctx.fillRect(0, 0, 100, 50);
+  ctx.fillStyle = '#f00';
+  ctx.fillRect(0, 0, 100, 0);
+  ctx.fillRect(0, 0, 0, 50);
+  ctx.fillRect(0, 0, 0, 0);
+  _assertPixel(canvas, 50,25, 0,255,0,255);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/drawing-rectangles-to-the-canvas/2d.strokeRect.basic.html b/testing/web-platform/tests/html/canvas/offscreen/drawing-rectangles-to-the-canvas/2d.strokeRect.basic.html
new file mode 100644
index 0000000000..79cc3934b4
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/drawing-rectangles-to-the-canvas/2d.strokeRect.basic.html
@@ -0,0 +1,30 @@
+
+
+OffscreenCanvas test: 2d.strokeRect.basic
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.strokeRect.basic
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              strokeRect works
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/drawing-rectangles-to-the-canvas/2d.strokeRect.basic.worker.js b/testing/web-platform/tests/html/canvas/offscreen/drawing-rectangles-to-the-canvas/2d.strokeRect.basic.worker.js
new file mode 100644
index 0000000000..de7b13c8f9
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/drawing-rectangles-to-the-canvas/2d.strokeRect.basic.worker.js
@@ -0,0 +1,25 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.strokeRect.basic
+// Description:strokeRect works
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("strokeRect works");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.strokeStyle = '#0f0';
+  ctx.lineWidth = 50;
+  ctx.strokeRect(25, 24, 50, 2);
+  _assertPixel(canvas, 50,25, 0,255,0,255);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/drawing-rectangles-to-the-canvas/2d.strokeRect.clip.html b/testing/web-platform/tests/html/canvas/offscreen/drawing-rectangles-to-the-canvas/2d.strokeRect.clip.html
new file mode 100644
index 0000000000..9990f2761e
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/drawing-rectangles-to-the-canvas/2d.strokeRect.clip.html
@@ -0,0 +1,37 @@
+
+
+OffscreenCanvas test: 2d.strokeRect.clip
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.strokeRect.clip
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              strokeRect is affected by clipping regions
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/drawing-rectangles-to-the-canvas/2d.strokeRect.clip.worker.js b/testing/web-platform/tests/html/canvas/offscreen/drawing-rectangles-to-the-canvas/2d.strokeRect.clip.worker.js
new file mode 100644
index 0000000000..f70a421f1e
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/drawing-rectangles-to-the-canvas/2d.strokeRect.clip.worker.js
@@ -0,0 +1,32 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.strokeRect.clip
+// Description:strokeRect is affected by clipping regions
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("strokeRect is affected by clipping regions");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#0f0';
+  ctx.fillRect(0, 0, 100, 50);
+  ctx.beginPath();
+  ctx.rect(0, 0, 16, 16);
+  ctx.clip();
+  ctx.strokeStyle = '#f00';
+  ctx.lineWidth = 50;
+  ctx.strokeRect(0, 0, 100, 50);
+  ctx.fillStyle = '#0f0';
+  ctx.fillRect(0, 0, 16, 16);
+  _assertPixel(canvas, 50,25, 0,255,0,255);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/drawing-rectangles-to-the-canvas/2d.strokeRect.globalalpha.html b/testing/web-platform/tests/html/canvas/offscreen/drawing-rectangles-to-the-canvas/2d.strokeRect.globalalpha.html
new file mode 100644
index 0000000000..efc532f33f
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/drawing-rectangles-to-the-canvas/2d.strokeRect.globalalpha.html
@@ -0,0 +1,31 @@
+
+
+OffscreenCanvas test: 2d.strokeRect.globalalpha
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.strokeRect.globalalpha
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              strokeRect is affected by globalAlpha
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/drawing-rectangles-to-the-canvas/2d.strokeRect.globalalpha.worker.js b/testing/web-platform/tests/html/canvas/offscreen/drawing-rectangles-to-the-canvas/2d.strokeRect.globalalpha.worker.js
new file mode 100644
index 0000000000..2f938b3848
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/drawing-rectangles-to-the-canvas/2d.strokeRect.globalalpha.worker.js
@@ -0,0 +1,26 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.strokeRect.globalalpha
+// Description:strokeRect is affected by globalAlpha
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("strokeRect is affected by globalAlpha");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.globalAlpha = 0;
+  ctx.strokeStyle = '#f00';
+  ctx.lineWidth = 50;
+  ctx.strokeRect(25, 24, 50, 2);
+  _assertPixel(canvas, 50,25, 0,0,0,0);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/drawing-rectangles-to-the-canvas/2d.strokeRect.globalcomposite.html b/testing/web-platform/tests/html/canvas/offscreen/drawing-rectangles-to-the-canvas/2d.strokeRect.globalcomposite.html
new file mode 100644
index 0000000000..4532604c9a
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/drawing-rectangles-to-the-canvas/2d.strokeRect.globalcomposite.html
@@ -0,0 +1,31 @@
+
+
+OffscreenCanvas test: 2d.strokeRect.globalcomposite
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.strokeRect.globalcomposite
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              strokeRect is not affected by globalCompositeOperation
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/drawing-rectangles-to-the-canvas/2d.strokeRect.globalcomposite.worker.js b/testing/web-platform/tests/html/canvas/offscreen/drawing-rectangles-to-the-canvas/2d.strokeRect.globalcomposite.worker.js
new file mode 100644
index 0000000000..9de70c15a0
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/drawing-rectangles-to-the-canvas/2d.strokeRect.globalcomposite.worker.js
@@ -0,0 +1,26 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.strokeRect.globalcomposite
+// Description:strokeRect is not affected by globalCompositeOperation
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("strokeRect is not affected by globalCompositeOperation");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.globalCompositeOperation = 'source-in';
+  ctx.strokeStyle = '#f00';
+  ctx.lineWidth = 50;
+  ctx.strokeRect(25, 24, 50, 2);
+  _assertPixel(canvas, 50,25, 0,0,0,0);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/drawing-rectangles-to-the-canvas/2d.strokeRect.negative.html b/testing/web-platform/tests/html/canvas/offscreen/drawing-rectangles-to-the-canvas/2d.strokeRect.negative.html
new file mode 100644
index 0000000000..13af38e565
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/drawing-rectangles-to-the-canvas/2d.strokeRect.negative.html
@@ -0,0 +1,38 @@
+
+
+OffscreenCanvas test: 2d.strokeRect.negative
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.strokeRect.negative
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              strokeRect of negative sizes works
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/drawing-rectangles-to-the-canvas/2d.strokeRect.negative.worker.js b/testing/web-platform/tests/html/canvas/offscreen/drawing-rectangles-to-the-canvas/2d.strokeRect.negative.worker.js
new file mode 100644
index 0000000000..bc2aa0434b
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/drawing-rectangles-to-the-canvas/2d.strokeRect.negative.worker.js
@@ -0,0 +1,33 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.strokeRect.negative
+// Description:strokeRect of negative sizes works
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("strokeRect of negative sizes works");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#f00';
+  ctx.fillRect(0, 0, 100, 50);
+  ctx.strokeStyle = '#0f0';
+  ctx.lineWidth = 25;
+  ctx.strokeRect(12, 12, 26, 1);
+  ctx.strokeRect(88, 12, -26, 1);
+  ctx.strokeRect(12, 38, 26, -1);
+  ctx.strokeRect(88, 38, -26, -1);
+  _assertPixel(canvas, 25,12, 0,255,0,255);
+  _assertPixel(canvas, 75,12, 0,255,0,255);
+  _assertPixel(canvas, 25,37, 0,255,0,255);
+  _assertPixel(canvas, 75,37, 0,255,0,255);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/drawing-rectangles-to-the-canvas/2d.strokeRect.nonfinite.html b/testing/web-platform/tests/html/canvas/offscreen/drawing-rectangles-to-the-canvas/2d.strokeRect.nonfinite.html
new file mode 100644
index 0000000000..6393797464
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/drawing-rectangles-to-the-canvas/2d.strokeRect.nonfinite.html
@@ -0,0 +1,54 @@
+
+
+OffscreenCanvas test: 2d.strokeRect.nonfinite
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.strokeRect.nonfinite
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              strokeRect() with Infinity/NaN is ignored
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/drawing-rectangles-to-the-canvas/2d.strokeRect.nonfinite.worker.js b/testing/web-platform/tests/html/canvas/offscreen/drawing-rectangles-to-the-canvas/2d.strokeRect.nonfinite.worker.js
new file mode 100644
index 0000000000..1878e54c5f
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/drawing-rectangles-to-the-canvas/2d.strokeRect.nonfinite.worker.js
@@ -0,0 +1,49 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.strokeRect.nonfinite
+// Description:strokeRect() with Infinity/NaN is ignored
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("strokeRect() with Infinity/NaN is ignored");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#0f0';
+  ctx.fillRect(0, 0, 100, 50);
+  ctx.strokeStyle = '#f00';
+  ctx.lineWidth = 150;
+  ctx.strokeRect(Infinity, 0, 100, 50);
+  ctx.strokeRect(-Infinity, 0, 100, 50);
+  ctx.strokeRect(NaN, 0, 100, 50);
+  ctx.strokeRect(0, Infinity, 100, 50);
+  ctx.strokeRect(0, -Infinity, 100, 50);
+  ctx.strokeRect(0, NaN, 100, 50);
+  ctx.strokeRect(0, 0, Infinity, 50);
+  ctx.strokeRect(0, 0, -Infinity, 50);
+  ctx.strokeRect(0, 0, NaN, 50);
+  ctx.strokeRect(0, 0, 100, Infinity);
+  ctx.strokeRect(0, 0, 100, -Infinity);
+  ctx.strokeRect(0, 0, 100, NaN);
+  ctx.strokeRect(Infinity, Infinity, 100, 50);
+  ctx.strokeRect(Infinity, Infinity, Infinity, 50);
+  ctx.strokeRect(Infinity, Infinity, Infinity, Infinity);
+  ctx.strokeRect(Infinity, Infinity, 100, Infinity);
+  ctx.strokeRect(Infinity, 0, Infinity, 50);
+  ctx.strokeRect(Infinity, 0, Infinity, Infinity);
+  ctx.strokeRect(Infinity, 0, 100, Infinity);
+  ctx.strokeRect(0, Infinity, Infinity, 50);
+  ctx.strokeRect(0, Infinity, Infinity, Infinity);
+  ctx.strokeRect(0, Infinity, 100, Infinity);
+  ctx.strokeRect(0, 0, Infinity, Infinity);
+  _assertPixel(canvas, 50,25, 0,255,0,255);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/drawing-rectangles-to-the-canvas/2d.strokeRect.path.html b/testing/web-platform/tests/html/canvas/offscreen/drawing-rectangles-to-the-canvas/2d.strokeRect.path.html
new file mode 100644
index 0000000000..da8e903f9c
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/drawing-rectangles-to-the-canvas/2d.strokeRect.path.html
@@ -0,0 +1,34 @@
+
+
+OffscreenCanvas test: 2d.strokeRect.path
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.strokeRect.path
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              strokeRect does not affect the current path
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/drawing-rectangles-to-the-canvas/2d.strokeRect.path.worker.js b/testing/web-platform/tests/html/canvas/offscreen/drawing-rectangles-to-the-canvas/2d.strokeRect.path.worker.js
new file mode 100644
index 0000000000..839b973b17
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/drawing-rectangles-to-the-canvas/2d.strokeRect.path.worker.js
@@ -0,0 +1,29 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.strokeRect.path
+// Description:strokeRect does not affect the current path
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("strokeRect does not affect the current path");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.beginPath();
+  ctx.rect(0, 0, 100, 50);
+  ctx.strokeStyle = '#f00';
+  ctx.lineWidth = 5;
+  ctx.strokeRect(0, 0, 16, 16);
+  ctx.fillStyle = '#0f0';
+  ctx.fill();
+  _assertPixel(canvas, 50,25, 0,255,0,255);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/drawing-rectangles-to-the-canvas/2d.strokeRect.shadow.html b/testing/web-platform/tests/html/canvas/offscreen/drawing-rectangles-to-the-canvas/2d.strokeRect.shadow.html
new file mode 100644
index 0000000000..2adf24e2b5
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/drawing-rectangles-to-the-canvas/2d.strokeRect.shadow.html
@@ -0,0 +1,37 @@
+
+
+OffscreenCanvas test: 2d.strokeRect.shadow
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.strokeRect.shadow
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              strokeRect draws shadows
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/drawing-rectangles-to-the-canvas/2d.strokeRect.shadow.worker.js b/testing/web-platform/tests/html/canvas/offscreen/drawing-rectangles-to-the-canvas/2d.strokeRect.shadow.worker.js
new file mode 100644
index 0000000000..36b3455016
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/drawing-rectangles-to-the-canvas/2d.strokeRect.shadow.worker.js
@@ -0,0 +1,32 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.strokeRect.shadow
+// Description:strokeRect draws shadows
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("strokeRect draws shadows");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#f00';
+  ctx.fillRect(0, 0, 100, 50);
+  ctx.fillStyle = '#f00';
+  ctx.shadowColor = '#0f0';
+  ctx.shadowBlur = 0;
+  ctx.shadowOffsetX = 0;
+  ctx.shadowOffsetY = 50;
+  ctx.strokeStyle = '#f00';
+  ctx.lineWidth = 50;
+  ctx.strokeRect(0, -75, 100, 50);
+  _assertPixel(canvas, 50,25, 0,255,0,255);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/drawing-rectangles-to-the-canvas/2d.strokeRect.transform.html b/testing/web-platform/tests/html/canvas/offscreen/drawing-rectangles-to-the-canvas/2d.strokeRect.transform.html
new file mode 100644
index 0000000000..214ea14023
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/drawing-rectangles-to-the-canvas/2d.strokeRect.transform.html
@@ -0,0 +1,32 @@
+
+
+OffscreenCanvas test: 2d.strokeRect.transform
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.strokeRect.transform
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              fillRect is affected by transforms
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/drawing-rectangles-to-the-canvas/2d.strokeRect.transform.worker.js b/testing/web-platform/tests/html/canvas/offscreen/drawing-rectangles-to-the-canvas/2d.strokeRect.transform.worker.js
new file mode 100644
index 0000000000..43aab18533
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/drawing-rectangles-to-the-canvas/2d.strokeRect.transform.worker.js
@@ -0,0 +1,27 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.strokeRect.transform
+// Description:fillRect is affected by transforms
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("fillRect is affected by transforms");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.scale(10, 10);
+  ctx.translate(0, 5);
+  ctx.strokeStyle = '#0f0';
+  ctx.lineWidth = 5;
+  ctx.strokeRect(2.5, -2.6, 5, 0.2);
+  _assertPixel(canvas, 50,25, 0,255,0,255);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/drawing-rectangles-to-the-canvas/2d.strokeRect.zero.1.html b/testing/web-platform/tests/html/canvas/offscreen/drawing-rectangles-to-the-canvas/2d.strokeRect.zero.1.html
new file mode 100644
index 0000000000..2c63913fca
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/drawing-rectangles-to-the-canvas/2d.strokeRect.zero.1.html
@@ -0,0 +1,30 @@
+
+
+OffscreenCanvas test: 2d.strokeRect.zero.1
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.strokeRect.zero.1
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              strokeRect of 0x0 pixels draws nothing
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/drawing-rectangles-to-the-canvas/2d.strokeRect.zero.1.worker.js b/testing/web-platform/tests/html/canvas/offscreen/drawing-rectangles-to-the-canvas/2d.strokeRect.zero.1.worker.js
new file mode 100644
index 0000000000..115017b3bf
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/drawing-rectangles-to-the-canvas/2d.strokeRect.zero.1.worker.js
@@ -0,0 +1,25 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.strokeRect.zero.1
+// Description:strokeRect of 0x0 pixels draws nothing
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("strokeRect of 0x0 pixels draws nothing");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.strokeStyle = '#f00';
+  ctx.lineWidth = 250;
+  ctx.strokeRect(50, 25, 0, 0);
+  _assertPixel(canvas, 50,25, 0,0,0,0);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/drawing-rectangles-to-the-canvas/2d.strokeRect.zero.2.html b/testing/web-platform/tests/html/canvas/offscreen/drawing-rectangles-to-the-canvas/2d.strokeRect.zero.2.html
new file mode 100644
index 0000000000..16bddea7ee
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/drawing-rectangles-to-the-canvas/2d.strokeRect.zero.2.html
@@ -0,0 +1,32 @@
+
+
+OffscreenCanvas test: 2d.strokeRect.zero.2
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.strokeRect.zero.2
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              strokeRect of 0x0 pixels draws nothing, including caps and joins
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/drawing-rectangles-to-the-canvas/2d.strokeRect.zero.2.worker.js b/testing/web-platform/tests/html/canvas/offscreen/drawing-rectangles-to-the-canvas/2d.strokeRect.zero.2.worker.js
new file mode 100644
index 0000000000..973ebec44a
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/drawing-rectangles-to-the-canvas/2d.strokeRect.zero.2.worker.js
@@ -0,0 +1,27 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.strokeRect.zero.2
+// Description:strokeRect of 0x0 pixels draws nothing, including caps and joins
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("strokeRect of 0x0 pixels draws nothing, including caps and joins");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.strokeStyle = '#f00';
+  ctx.lineWidth = 250;
+  ctx.lineCap = 'round';
+  ctx.lineJoin = 'round';
+  ctx.strokeRect(50, 25, 0, 0);
+  _assertPixel(canvas, 50,25, 0,0,0,0);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/drawing-rectangles-to-the-canvas/2d.strokeRect.zero.3.html b/testing/web-platform/tests/html/canvas/offscreen/drawing-rectangles-to-the-canvas/2d.strokeRect.zero.3.html
new file mode 100644
index 0000000000..8bf3e043db
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/drawing-rectangles-to-the-canvas/2d.strokeRect.zero.3.html
@@ -0,0 +1,30 @@
+
+
+OffscreenCanvas test: 2d.strokeRect.zero.3
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.strokeRect.zero.3
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              strokeRect of Nx0 pixels draws a straight line
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/drawing-rectangles-to-the-canvas/2d.strokeRect.zero.3.worker.js b/testing/web-platform/tests/html/canvas/offscreen/drawing-rectangles-to-the-canvas/2d.strokeRect.zero.3.worker.js
new file mode 100644
index 0000000000..2612e54fdb
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/drawing-rectangles-to-the-canvas/2d.strokeRect.zero.3.worker.js
@@ -0,0 +1,25 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.strokeRect.zero.3
+// Description:strokeRect of Nx0 pixels draws a straight line
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("strokeRect of Nx0 pixels draws a straight line");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.strokeStyle = '#0f0';
+  ctx.lineWidth = 50;
+  ctx.strokeRect(0, 25, 100, 0);
+  _assertPixel(canvas, 50,25, 0,255,0,255);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/drawing-rectangles-to-the-canvas/2d.strokeRect.zero.4.html b/testing/web-platform/tests/html/canvas/offscreen/drawing-rectangles-to-the-canvas/2d.strokeRect.zero.4.html
new file mode 100644
index 0000000000..87aeaf7c13
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/drawing-rectangles-to-the-canvas/2d.strokeRect.zero.4.html
@@ -0,0 +1,31 @@
+
+
+OffscreenCanvas test: 2d.strokeRect.zero.4
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.strokeRect.zero.4
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              strokeRect of Nx0 pixels draws a closed line with no caps
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/drawing-rectangles-to-the-canvas/2d.strokeRect.zero.4.worker.js b/testing/web-platform/tests/html/canvas/offscreen/drawing-rectangles-to-the-canvas/2d.strokeRect.zero.4.worker.js
new file mode 100644
index 0000000000..3cec206313
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/drawing-rectangles-to-the-canvas/2d.strokeRect.zero.4.worker.js
@@ -0,0 +1,26 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.strokeRect.zero.4
+// Description:strokeRect of Nx0 pixels draws a closed line with no caps
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("strokeRect of Nx0 pixels draws a closed line with no caps");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.strokeStyle = '#f00';
+  ctx.lineWidth = 250;
+  ctx.lineCap = 'round';
+  ctx.strokeRect(100, 25, 100, 0);
+  _assertPixel(canvas, 50,25, 0,0,0,0);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/drawing-rectangles-to-the-canvas/2d.strokeRect.zero.5.html b/testing/web-platform/tests/html/canvas/offscreen/drawing-rectangles-to-the-canvas/2d.strokeRect.zero.5.html
new file mode 100644
index 0000000000..e03e7aa118
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/drawing-rectangles-to-the-canvas/2d.strokeRect.zero.5.html
@@ -0,0 +1,31 @@
+
+
+OffscreenCanvas test: 2d.strokeRect.zero.5
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.strokeRect.zero.5
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              strokeRect of Nx0 pixels draws a closed line with joins
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/drawing-rectangles-to-the-canvas/2d.strokeRect.zero.5.worker.js b/testing/web-platform/tests/html/canvas/offscreen/drawing-rectangles-to-the-canvas/2d.strokeRect.zero.5.worker.js
new file mode 100644
index 0000000000..8591409705
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/drawing-rectangles-to-the-canvas/2d.strokeRect.zero.5.worker.js
@@ -0,0 +1,26 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.strokeRect.zero.5
+// Description:strokeRect of Nx0 pixels draws a closed line with joins
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("strokeRect of Nx0 pixels draws a closed line with joins");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.strokeStyle = '#0f0';
+  ctx.lineWidth = 250;
+  ctx.lineJoin = 'round';
+  ctx.strokeRect(100, 25, 100, 0);
+  _assertPixel(canvas, 50,25, 0,255,0,255);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.CSSHSL.html b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.CSSHSL.html
new file mode 100644
index 0000000000..af5b04170d
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.CSSHSL.html
@@ -0,0 +1,45 @@
+
+
+OffscreenCanvas test: 2d.fillStyle.CSSHSL
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.fillStyle.CSSHSL
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              CSSHSL works as color input
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.default.html b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.default.html
new file mode 100644
index 0000000000..3a3b6a9798
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.default.html
@@ -0,0 +1,27 @@
+
+
+OffscreenCanvas test: 2d.fillStyle.default
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.fillStyle.default
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.default.worker.js b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.default.worker.js
new file mode 100644
index 0000000000..95ae259ca4
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.default.worker.js
@@ -0,0 +1,23 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.fillStyle.default
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+_assertSame(ctx.fillStyle, '#000000', "ctx.fillStyle", "'#000000'");
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.get.halftransparent.html b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.get.halftransparent.html
new file mode 100644
index 0000000000..68b09d06f5
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.get.halftransparent.html
@@ -0,0 +1,28 @@
+
+
+OffscreenCanvas test: 2d.fillStyle.get.halftransparent
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.fillStyle.get.halftransparent
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.get.halftransparent.worker.js b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.get.halftransparent.worker.js
new file mode 100644
index 0000000000..de8f491ca3
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.get.halftransparent.worker.js
@@ -0,0 +1,24 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.fillStyle.get.halftransparent
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+ctx.fillStyle = 'rgba(255,255,255,0.5)';
+_assertSame(ctx.fillStyle, 'rgba(255, 255, 255, 0.5)', "ctx.fillStyle", "'rgba(255, 255, 255, 0.5)'");
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.get.semitransparent.html b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.get.semitransparent.html
new file mode 100644
index 0000000000..9f8566809d
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.get.semitransparent.html
@@ -0,0 +1,28 @@
+
+
+OffscreenCanvas test: 2d.fillStyle.get.semitransparent
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.fillStyle.get.semitransparent
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.get.semitransparent.worker.js b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.get.semitransparent.worker.js
new file mode 100644
index 0000000000..3715183d55
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.get.semitransparent.worker.js
@@ -0,0 +1,24 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.fillStyle.get.semitransparent
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+ctx.fillStyle = 'rgba(255,255,255,0.45)';
+assert_regexp_match(ctx.fillStyle, /^rgba\(255, 255, 255, 0\.4\d+\)$/);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.get.solid.html b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.get.solid.html
new file mode 100644
index 0000000000..3eca93e237
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.get.solid.html
@@ -0,0 +1,28 @@
+
+
+OffscreenCanvas test: 2d.fillStyle.get.solid
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.fillStyle.get.solid
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.get.solid.worker.js b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.get.solid.worker.js
new file mode 100644
index 0000000000..2ada733651
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.get.solid.worker.js
@@ -0,0 +1,24 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.fillStyle.get.solid
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+ctx.fillStyle = '#fa0';
+_assertSame(ctx.fillStyle, '#ffaa00', "ctx.fillStyle", "'#ffaa00'");
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.get.transparent.html b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.get.transparent.html
new file mode 100644
index 0000000000..caab8e0236
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.get.transparent.html
@@ -0,0 +1,28 @@
+
+
+OffscreenCanvas test: 2d.fillStyle.get.transparent
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.fillStyle.get.transparent
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.get.transparent.worker.js b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.get.transparent.worker.js
new file mode 100644
index 0000000000..57f5facf2e
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.get.transparent.worker.js
@@ -0,0 +1,24 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.fillStyle.get.transparent
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+ctx.fillStyle = 'rgba(0,0,0,0)';
+_assertSame(ctx.fillStyle, 'rgba(0, 0, 0, 0)', "ctx.fillStyle", "'rgba(0, 0, 0, 0)'");
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.invalidstring.html b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.invalidstring.html
new file mode 100644
index 0000000000..260554c4bc
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.invalidstring.html
@@ -0,0 +1,32 @@
+
+
+OffscreenCanvas test: 2d.fillStyle.invalidstring
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.fillStyle.invalidstring
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.invalidstring.worker.js b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.invalidstring.worker.js
new file mode 100644
index 0000000000..4e4df4f810
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.invalidstring.worker.js
@@ -0,0 +1,28 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.fillStyle.invalidstring
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+ctx.fillStyle = '#f00';
+ctx.fillRect(0, 0, 100, 50);
+ctx.fillStyle = '#0f0';
+ctx.fillStyle = 'invalid';
+ctx.fillRect(0, 0, 100, 50);
+_assertPixel(canvas, 50,25, 0,255,0,255);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.invalidtype.html b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.invalidtype.html
new file mode 100644
index 0000000000..53c0f77c8c
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.invalidtype.html
@@ -0,0 +1,32 @@
+
+
+OffscreenCanvas test: 2d.fillStyle.invalidtype
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.fillStyle.invalidtype
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.invalidtype.worker.js b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.invalidtype.worker.js
new file mode 100644
index 0000000000..19b3120638
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.invalidtype.worker.js
@@ -0,0 +1,28 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.fillStyle.invalidtype
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+ctx.fillStyle = '#f00';
+ctx.fillRect(0, 0, 100, 50);
+ctx.fillStyle = '#0f0';
+ctx.fillStyle = null;
+ctx.fillRect(0, 0, 100, 50);
+_assertPixel(canvas, 50,25, 0,255,0,255);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-hsl-1.html b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-hsl-1.html
new file mode 100644
index 0000000000..d4a2466b7d
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-hsl-1.html
@@ -0,0 +1,31 @@
+
+
+OffscreenCanvas test: 2d.fillStyle.parse.css-color-4-hsl-1
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.fillStyle.parse.css-color-4-hsl-1
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-hsl-1.worker.js b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-hsl-1.worker.js
new file mode 100644
index 0000000000..074d796caf
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-hsl-1.worker.js
@@ -0,0 +1,27 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.fillStyle.parse.css-color-4-hsl-1
+// Description:
+// Note:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+
+ctx.fillStyle = '#f00';
+ctx.fillStyle = 'hsl(120 100.0% 50.0%)';
+ctx.fillRect(0, 0, 100, 50);
+_assertPixel(canvas, 50,25, 0,255,0,255);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-hsl-2.html b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-hsl-2.html
new file mode 100644
index 0000000000..6853ae51ea
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-hsl-2.html
@@ -0,0 +1,31 @@
+
+
+OffscreenCanvas test: 2d.fillStyle.parse.css-color-4-hsl-2
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.fillStyle.parse.css-color-4-hsl-2
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-hsl-2.worker.js b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-hsl-2.worker.js
new file mode 100644
index 0000000000..a4226cf8ca
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-hsl-2.worker.js
@@ -0,0 +1,27 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.fillStyle.parse.css-color-4-hsl-2
+// Description:
+// Note:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+
+ctx.fillStyle = '#f00';
+ctx.fillStyle = 'hsl(120 100.0% 50.0% / 0.2)';
+ctx.fillRect(0, 0, 100, 50);
+_assertPixel(canvas, 50,25, 0,255,0,51);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-hsl-3.html b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-hsl-3.html
new file mode 100644
index 0000000000..62f4e48ef3
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-hsl-3.html
@@ -0,0 +1,31 @@
+
+
+OffscreenCanvas test: 2d.fillStyle.parse.css-color-4-hsl-3
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.fillStyle.parse.css-color-4-hsl-3
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-hsl-3.worker.js b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-hsl-3.worker.js
new file mode 100644
index 0000000000..de3e3791fa
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-hsl-3.worker.js
@@ -0,0 +1,27 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.fillStyle.parse.css-color-4-hsl-3
+// Description:
+// Note:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+
+ctx.fillStyle = '#f00';
+ctx.fillStyle = 'hsl(120.0, 100.0%, 50.0%, 0.2)';
+ctx.fillRect(0, 0, 100, 50);
+_assertPixel(canvas, 50,25, 0,255,0,51);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-hsl-4.html b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-hsl-4.html
new file mode 100644
index 0000000000..082ddcd75e
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-hsl-4.html
@@ -0,0 +1,31 @@
+
+
+OffscreenCanvas test: 2d.fillStyle.parse.css-color-4-hsl-4
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.fillStyle.parse.css-color-4-hsl-4
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-hsl-4.worker.js b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-hsl-4.worker.js
new file mode 100644
index 0000000000..2714bdf835
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-hsl-4.worker.js
@@ -0,0 +1,27 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.fillStyle.parse.css-color-4-hsl-4
+// Description:
+// Note:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+
+ctx.fillStyle = '#f00';
+ctx.fillStyle = 'hsl(120.0, 100.0%, 50.0%, 20%)';
+ctx.fillRect(0, 0, 100, 50);
+_assertPixel(canvas, 50,25, 0,255,0,51);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-hsl-5.html b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-hsl-5.html
new file mode 100644
index 0000000000..55f92e17ef
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-hsl-5.html
@@ -0,0 +1,31 @@
+
+
+OffscreenCanvas test: 2d.fillStyle.parse.css-color-4-hsl-5
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.fillStyle.parse.css-color-4-hsl-5
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-hsl-5.worker.js b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-hsl-5.worker.js
new file mode 100644
index 0000000000..ef3fe13355
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-hsl-5.worker.js
@@ -0,0 +1,27 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.fillStyle.parse.css-color-4-hsl-5
+// Description:
+// Note:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+
+ctx.fillStyle = '#f00';
+ctx.fillStyle = 'hsl(120deg, 100.0%, 50.0%, 0.2)';
+ctx.fillRect(0, 0, 100, 50);
+_assertPixel(canvas, 50,25, 0,255,0,51);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-hsl-6.html b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-hsl-6.html
new file mode 100644
index 0000000000..74657fca63
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-hsl-6.html
@@ -0,0 +1,31 @@
+
+
+OffscreenCanvas test: 2d.fillStyle.parse.css-color-4-hsl-6
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.fillStyle.parse.css-color-4-hsl-6
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-hsl-6.worker.js b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-hsl-6.worker.js
new file mode 100644
index 0000000000..a36af9a563
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-hsl-6.worker.js
@@ -0,0 +1,27 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.fillStyle.parse.css-color-4-hsl-6
+// Description:
+// Note:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+
+ctx.fillStyle = '#f00';
+ctx.fillStyle = 'hsl(120deg, 100.0%, 50.0%)';
+ctx.fillRect(0, 0, 100, 50);
+_assertPixel(canvas, 50,25, 0,255,0,255);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-hsl-7.html b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-hsl-7.html
new file mode 100644
index 0000000000..419b15f72e
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-hsl-7.html
@@ -0,0 +1,31 @@
+
+
+OffscreenCanvas test: 2d.fillStyle.parse.css-color-4-hsl-7
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.fillStyle.parse.css-color-4-hsl-7
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-hsl-7.worker.js b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-hsl-7.worker.js
new file mode 100644
index 0000000000..10da1141aa
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-hsl-7.worker.js
@@ -0,0 +1,27 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.fillStyle.parse.css-color-4-hsl-7
+// Description:
+// Note:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+
+ctx.fillStyle = '#f00';
+ctx.fillStyle = 'hsl(133.33333333grad, 100.0%, 50.0%)';
+ctx.fillRect(0, 0, 100, 50);
+_assertPixel(canvas, 50,25, 0,255,0,255);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-hsl-8.html b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-hsl-8.html
new file mode 100644
index 0000000000..a5acc80ef8
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-hsl-8.html
@@ -0,0 +1,31 @@
+
+
+OffscreenCanvas test: 2d.fillStyle.parse.css-color-4-hsl-8
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.fillStyle.parse.css-color-4-hsl-8
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-hsl-8.worker.js b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-hsl-8.worker.js
new file mode 100644
index 0000000000..e12f96350b
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-hsl-8.worker.js
@@ -0,0 +1,27 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.fillStyle.parse.css-color-4-hsl-8
+// Description:
+// Note:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+
+ctx.fillStyle = '#f00';
+ctx.fillStyle = 'hsl(2.0943951024rad, 100.0%, 50.0%)';
+ctx.fillRect(0, 0, 100, 50);
+_assertPixel(canvas, 50,25, 0,255,0,255);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-hsl-9.html b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-hsl-9.html
new file mode 100644
index 0000000000..dc18415399
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-hsl-9.html
@@ -0,0 +1,31 @@
+
+
+OffscreenCanvas test: 2d.fillStyle.parse.css-color-4-hsl-9
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.fillStyle.parse.css-color-4-hsl-9
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-hsl-9.worker.js b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-hsl-9.worker.js
new file mode 100644
index 0000000000..51de0e0b15
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-hsl-9.worker.js
@@ -0,0 +1,27 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.fillStyle.parse.css-color-4-hsl-9
+// Description:
+// Note:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+
+ctx.fillStyle = '#f00';
+ctx.fillStyle = 'hsl(0.3333333333turn, 100.0%, 50.0%)';
+ctx.fillRect(0, 0, 100, 50);
+_assertPixel(canvas, 50,25, 0,255,0,255);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-hsla-1.html b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-hsla-1.html
new file mode 100644
index 0000000000..84b80615be
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-hsla-1.html
@@ -0,0 +1,31 @@
+
+
+OffscreenCanvas test: 2d.fillStyle.parse.css-color-4-hsla-1
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.fillStyle.parse.css-color-4-hsla-1
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-hsla-1.worker.js b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-hsla-1.worker.js
new file mode 100644
index 0000000000..2d7abab3be
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-hsla-1.worker.js
@@ -0,0 +1,27 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.fillStyle.parse.css-color-4-hsla-1
+// Description:
+// Note:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+
+ctx.fillStyle = '#f00';
+ctx.fillStyle = 'hsl(120 100.0% 50.0%)';
+ctx.fillRect(0, 0, 100, 50);
+_assertPixel(canvas, 50,25, 0,255,0,255);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-hsla-2.html b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-hsla-2.html
new file mode 100644
index 0000000000..a3f2c67ab4
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-hsla-2.html
@@ -0,0 +1,31 @@
+
+
+OffscreenCanvas test: 2d.fillStyle.parse.css-color-4-hsla-2
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.fillStyle.parse.css-color-4-hsla-2
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-hsla-2.worker.js b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-hsla-2.worker.js
new file mode 100644
index 0000000000..dd66b1d079
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-hsla-2.worker.js
@@ -0,0 +1,27 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.fillStyle.parse.css-color-4-hsla-2
+// Description:
+// Note:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+
+ctx.fillStyle = '#f00';
+ctx.fillStyle = 'hsl(120 100.0% 50.0% / 0.2)';
+ctx.fillRect(0, 0, 100, 50);
+_assertPixel(canvas, 50,25, 0,255,0,51);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-hsla-3.html b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-hsla-3.html
new file mode 100644
index 0000000000..5b809ba567
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-hsla-3.html
@@ -0,0 +1,31 @@
+
+
+OffscreenCanvas test: 2d.fillStyle.parse.css-color-4-hsla-3
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.fillStyle.parse.css-color-4-hsla-3
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-hsla-3.worker.js b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-hsla-3.worker.js
new file mode 100644
index 0000000000..7ef6d8f475
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-hsla-3.worker.js
@@ -0,0 +1,27 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.fillStyle.parse.css-color-4-hsla-3
+// Description:
+// Note:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+
+ctx.fillStyle = '#f00';
+ctx.fillStyle = 'hsl(120.0, 100.0%, 50.0%, 0.2)';
+ctx.fillRect(0, 0, 100, 50);
+_assertPixel(canvas, 50,25, 0,255,0,51);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-hsla-4.html b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-hsla-4.html
new file mode 100644
index 0000000000..3e063664fb
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-hsla-4.html
@@ -0,0 +1,31 @@
+
+
+OffscreenCanvas test: 2d.fillStyle.parse.css-color-4-hsla-4
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.fillStyle.parse.css-color-4-hsla-4
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-hsla-4.worker.js b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-hsla-4.worker.js
new file mode 100644
index 0000000000..ed1dec0162
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-hsla-4.worker.js
@@ -0,0 +1,27 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.fillStyle.parse.css-color-4-hsla-4
+// Description:
+// Note:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+
+ctx.fillStyle = '#f00';
+ctx.fillStyle = 'hsl(120.0, 100.0%, 50.0%, 20%)';
+ctx.fillRect(0, 0, 100, 50);
+_assertPixel(canvas, 50,25, 0,255,0,51);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-hsla-5.html b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-hsla-5.html
new file mode 100644
index 0000000000..34f626a0a5
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-hsla-5.html
@@ -0,0 +1,31 @@
+
+
+OffscreenCanvas test: 2d.fillStyle.parse.css-color-4-hsla-5
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.fillStyle.parse.css-color-4-hsla-5
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-hsla-5.worker.js b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-hsla-5.worker.js
new file mode 100644
index 0000000000..89042269ab
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-hsla-5.worker.js
@@ -0,0 +1,27 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.fillStyle.parse.css-color-4-hsla-5
+// Description:
+// Note:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+
+ctx.fillStyle = '#f00';
+ctx.fillStyle = 'hsl(120deg, 100.0%, 50.0%, 0.2)';
+ctx.fillRect(0, 0, 100, 50);
+_assertPixel(canvas, 50,25, 0,255,0,51);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-hsla-6.html b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-hsla-6.html
new file mode 100644
index 0000000000..3c1a23bf37
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-hsla-6.html
@@ -0,0 +1,31 @@
+
+
+OffscreenCanvas test: 2d.fillStyle.parse.css-color-4-hsla-6
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.fillStyle.parse.css-color-4-hsla-6
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-hsla-6.worker.js b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-hsla-6.worker.js
new file mode 100644
index 0000000000..645081df5e
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-hsla-6.worker.js
@@ -0,0 +1,27 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.fillStyle.parse.css-color-4-hsla-6
+// Description:
+// Note:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+
+ctx.fillStyle = '#f00';
+ctx.fillStyle = 'hsl(120deg, 100.0%, 50.0%)';
+ctx.fillRect(0, 0, 100, 50);
+_assertPixel(canvas, 50,25, 0,255,0,255);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-hsla-7.html b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-hsla-7.html
new file mode 100644
index 0000000000..cc874e8fbe
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-hsla-7.html
@@ -0,0 +1,31 @@
+
+
+OffscreenCanvas test: 2d.fillStyle.parse.css-color-4-hsla-7
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.fillStyle.parse.css-color-4-hsla-7
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-hsla-7.worker.js b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-hsla-7.worker.js
new file mode 100644
index 0000000000..f42602ebc3
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-hsla-7.worker.js
@@ -0,0 +1,27 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.fillStyle.parse.css-color-4-hsla-7
+// Description:
+// Note:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+
+ctx.fillStyle = '#f00';
+ctx.fillStyle = 'hsl(133.33333333grad, 100.0%, 50.0%)';
+ctx.fillRect(0, 0, 100, 50);
+_assertPixel(canvas, 50,25, 0,255,0,255);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-hsla-8.html b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-hsla-8.html
new file mode 100644
index 0000000000..7501436481
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-hsla-8.html
@@ -0,0 +1,31 @@
+
+
+OffscreenCanvas test: 2d.fillStyle.parse.css-color-4-hsla-8
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.fillStyle.parse.css-color-4-hsla-8
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-hsla-8.worker.js b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-hsla-8.worker.js
new file mode 100644
index 0000000000..376cb94c90
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-hsla-8.worker.js
@@ -0,0 +1,27 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.fillStyle.parse.css-color-4-hsla-8
+// Description:
+// Note:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+
+ctx.fillStyle = '#f00';
+ctx.fillStyle = 'hsl(2.0943951024rad, 100.0%, 50.0%)';
+ctx.fillRect(0, 0, 100, 50);
+_assertPixel(canvas, 50,25, 0,255,0,255);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-hsla-9.html b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-hsla-9.html
new file mode 100644
index 0000000000..f759e6910b
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-hsla-9.html
@@ -0,0 +1,31 @@
+
+
+OffscreenCanvas test: 2d.fillStyle.parse.css-color-4-hsla-9
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.fillStyle.parse.css-color-4-hsla-9
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-hsla-9.worker.js b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-hsla-9.worker.js
new file mode 100644
index 0000000000..58f404175d
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-hsla-9.worker.js
@@ -0,0 +1,27 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.fillStyle.parse.css-color-4-hsla-9
+// Description:
+// Note:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+
+ctx.fillStyle = '#f00';
+ctx.fillStyle = 'hsl(0.3333333333turn, 100.0%, 50.0%)';
+ctx.fillRect(0, 0, 100, 50);
+_assertPixel(canvas, 50,25, 0,255,0,255);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-rgb-1.html b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-rgb-1.html
new file mode 100644
index 0000000000..44648751a3
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-rgb-1.html
@@ -0,0 +1,31 @@
+
+
+OffscreenCanvas test: 2d.fillStyle.parse.css-color-4-rgb-1
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.fillStyle.parse.css-color-4-rgb-1
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-rgb-1.worker.js b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-rgb-1.worker.js
new file mode 100644
index 0000000000..34ecf3d318
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-rgb-1.worker.js
@@ -0,0 +1,27 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.fillStyle.parse.css-color-4-rgb-1
+// Description:
+// Note:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+
+ctx.fillStyle = '#f00';
+ctx.fillStyle = 'rgb(0, 255.0, 0)';
+ctx.fillRect(0, 0, 100, 50);
+_assertPixel(canvas, 50,25, 0,255,0,255);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-rgb-2.html b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-rgb-2.html
new file mode 100644
index 0000000000..328d731e49
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-rgb-2.html
@@ -0,0 +1,31 @@
+
+
+OffscreenCanvas test: 2d.fillStyle.parse.css-color-4-rgb-2
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.fillStyle.parse.css-color-4-rgb-2
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-rgb-2.worker.js b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-rgb-2.worker.js
new file mode 100644
index 0000000000..958d5df352
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-rgb-2.worker.js
@@ -0,0 +1,27 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.fillStyle.parse.css-color-4-rgb-2
+// Description:
+// Note:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+
+ctx.fillStyle = '#f00';
+ctx.fillStyle = 'rgb(0, 255, 0, 0.2)';
+ctx.fillRect(0, 0, 100, 50);
+_assertPixel(canvas, 50,25, 0,255,0,51);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-rgb-3.html b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-rgb-3.html
new file mode 100644
index 0000000000..1dc99c24c7
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-rgb-3.html
@@ -0,0 +1,31 @@
+
+
+OffscreenCanvas test: 2d.fillStyle.parse.css-color-4-rgb-3
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.fillStyle.parse.css-color-4-rgb-3
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-rgb-3.worker.js b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-rgb-3.worker.js
new file mode 100644
index 0000000000..f82df16e9a
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-rgb-3.worker.js
@@ -0,0 +1,27 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.fillStyle.parse.css-color-4-rgb-3
+// Description:
+// Note:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+
+ctx.fillStyle = '#f00';
+ctx.fillStyle = 'rgb(0, 255, 0, 20%)';
+ctx.fillRect(0, 0, 100, 50);
+_assertPixel(canvas, 50,25, 0,255,0,51);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-rgb-4.html b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-rgb-4.html
new file mode 100644
index 0000000000..1b72c4f235
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-rgb-4.html
@@ -0,0 +1,31 @@
+
+
+OffscreenCanvas test: 2d.fillStyle.parse.css-color-4-rgb-4
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.fillStyle.parse.css-color-4-rgb-4
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-rgb-4.worker.js b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-rgb-4.worker.js
new file mode 100644
index 0000000000..08dba89ec8
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-rgb-4.worker.js
@@ -0,0 +1,27 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.fillStyle.parse.css-color-4-rgb-4
+// Description:
+// Note:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+
+ctx.fillStyle = '#f00';
+ctx.fillStyle = 'rgb(0 255 0)';
+ctx.fillRect(0, 0, 100, 50);
+_assertPixel(canvas, 50,25, 0,255,0,255);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-rgb-5.html b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-rgb-5.html
new file mode 100644
index 0000000000..9044fe81a4
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-rgb-5.html
@@ -0,0 +1,31 @@
+
+
+OffscreenCanvas test: 2d.fillStyle.parse.css-color-4-rgb-5
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.fillStyle.parse.css-color-4-rgb-5
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-rgb-5.worker.js b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-rgb-5.worker.js
new file mode 100644
index 0000000000..27ccca6c64
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-rgb-5.worker.js
@@ -0,0 +1,27 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.fillStyle.parse.css-color-4-rgb-5
+// Description:
+// Note:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+
+ctx.fillStyle = '#f00';
+ctx.fillStyle = 'rgb(0 255 0 / 0.2)';
+ctx.fillRect(0, 0, 100, 50);
+_assertPixel(canvas, 50,25, 0,255,0,51);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-rgb-6.html b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-rgb-6.html
new file mode 100644
index 0000000000..66cb90876f
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-rgb-6.html
@@ -0,0 +1,31 @@
+
+
+OffscreenCanvas test: 2d.fillStyle.parse.css-color-4-rgb-6
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.fillStyle.parse.css-color-4-rgb-6
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-rgb-6.worker.js b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-rgb-6.worker.js
new file mode 100644
index 0000000000..3ff4312fcb
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-rgb-6.worker.js
@@ -0,0 +1,27 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.fillStyle.parse.css-color-4-rgb-6
+// Description:
+// Note:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+
+ctx.fillStyle = '#f00';
+ctx.fillStyle = 'rgb(0 255 0 / 20%)';
+ctx.fillRect(0, 0, 100, 50);
+_assertPixel(canvas, 50,25, 0,255,0,51);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-rgba-1.html b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-rgba-1.html
new file mode 100644
index 0000000000..a0d2239244
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-rgba-1.html
@@ -0,0 +1,31 @@
+
+
+OffscreenCanvas test: 2d.fillStyle.parse.css-color-4-rgba-1
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.fillStyle.parse.css-color-4-rgba-1
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-rgba-1.worker.js b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-rgba-1.worker.js
new file mode 100644
index 0000000000..ef45434cab
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-rgba-1.worker.js
@@ -0,0 +1,27 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.fillStyle.parse.css-color-4-rgba-1
+// Description:
+// Note:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+
+ctx.fillStyle = '#f00';
+ctx.fillStyle = 'rgba(0, 255.0, 0)';
+ctx.fillRect(0, 0, 100, 50);
+_assertPixel(canvas, 50,25, 0,255,0,255);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-rgba-2.html b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-rgba-2.html
new file mode 100644
index 0000000000..96dcbf61d8
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-rgba-2.html
@@ -0,0 +1,31 @@
+
+
+OffscreenCanvas test: 2d.fillStyle.parse.css-color-4-rgba-2
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.fillStyle.parse.css-color-4-rgba-2
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-rgba-2.worker.js b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-rgba-2.worker.js
new file mode 100644
index 0000000000..e03f5252e9
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-rgba-2.worker.js
@@ -0,0 +1,27 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.fillStyle.parse.css-color-4-rgba-2
+// Description:
+// Note:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+
+ctx.fillStyle = '#f00';
+ctx.fillStyle = 'rgba(0, 255, 0, 0.2)';
+ctx.fillRect(0, 0, 100, 50);
+_assertPixel(canvas, 50,25, 0,255,0,51);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-rgba-3.html b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-rgba-3.html
new file mode 100644
index 0000000000..f972e83696
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-rgba-3.html
@@ -0,0 +1,31 @@
+
+
+OffscreenCanvas test: 2d.fillStyle.parse.css-color-4-rgba-3
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.fillStyle.parse.css-color-4-rgba-3
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-rgba-3.worker.js b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-rgba-3.worker.js
new file mode 100644
index 0000000000..3bc693f212
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-rgba-3.worker.js
@@ -0,0 +1,27 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.fillStyle.parse.css-color-4-rgba-3
+// Description:
+// Note:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+
+ctx.fillStyle = '#f00';
+ctx.fillStyle = 'rgba(0, 255, 0, 20%)';
+ctx.fillRect(0, 0, 100, 50);
+_assertPixel(canvas, 50,25, 0,255,0,51);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-rgba-4.html b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-rgba-4.html
new file mode 100644
index 0000000000..6825e8658a
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-rgba-4.html
@@ -0,0 +1,31 @@
+
+
+OffscreenCanvas test: 2d.fillStyle.parse.css-color-4-rgba-4
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.fillStyle.parse.css-color-4-rgba-4
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-rgba-4.worker.js b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-rgba-4.worker.js
new file mode 100644
index 0000000000..a50cc026bb
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-rgba-4.worker.js
@@ -0,0 +1,27 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.fillStyle.parse.css-color-4-rgba-4
+// Description:
+// Note:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+
+ctx.fillStyle = '#f00';
+ctx.fillStyle = 'rgba(0 255 0)';
+ctx.fillRect(0, 0, 100, 50);
+_assertPixel(canvas, 50,25, 0,255,0,255);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-rgba-5.html b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-rgba-5.html
new file mode 100644
index 0000000000..7c8b19c80d
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-rgba-5.html
@@ -0,0 +1,31 @@
+
+
+OffscreenCanvas test: 2d.fillStyle.parse.css-color-4-rgba-5
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.fillStyle.parse.css-color-4-rgba-5
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-rgba-5.worker.js b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-rgba-5.worker.js
new file mode 100644
index 0000000000..e134e34b29
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-rgba-5.worker.js
@@ -0,0 +1,27 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.fillStyle.parse.css-color-4-rgba-5
+// Description:
+// Note:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+
+ctx.fillStyle = '#f00';
+ctx.fillStyle = 'rgba(0 255 0 / 0.2)';
+ctx.fillRect(0, 0, 100, 50);
+_assertPixel(canvas, 50,25, 0,255,0,51);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-rgba-6.html b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-rgba-6.html
new file mode 100644
index 0000000000..b63b46f9d2
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-rgba-6.html
@@ -0,0 +1,31 @@
+
+
+OffscreenCanvas test: 2d.fillStyle.parse.css-color-4-rgba-6
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.fillStyle.parse.css-color-4-rgba-6
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-rgba-6.worker.js b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-rgba-6.worker.js
new file mode 100644
index 0000000000..3e401de74d
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.css-color-4-rgba-6.worker.js
@@ -0,0 +1,27 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.fillStyle.parse.css-color-4-rgba-6
+// Description:
+// Note:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+
+ctx.fillStyle = '#f00';
+ctx.fillStyle = 'rgba(0 255 0 / 20%)';
+ctx.fillRect(0, 0, 100, 50);
+_assertPixel(canvas, 50,25, 0,255,0,51);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.hex3.html b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.hex3.html
new file mode 100644
index 0000000000..90d3e6037e
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.hex3.html
@@ -0,0 +1,31 @@
+
+
+OffscreenCanvas test: 2d.fillStyle.parse.hex3
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.fillStyle.parse.hex3
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.hex3.worker.js b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.hex3.worker.js
new file mode 100644
index 0000000000..9f0d0a4322
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.hex3.worker.js
@@ -0,0 +1,27 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.fillStyle.parse.hex3
+// Description:
+// Note:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+
+ctx.fillStyle = '#f00';
+ctx.fillStyle = '#0f0';
+ctx.fillRect(0, 0, 100, 50);
+_assertPixel(canvas, 50,25, 0,255,0,255);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.hex4.html b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.hex4.html
new file mode 100644
index 0000000000..d10e3a8910
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.hex4.html
@@ -0,0 +1,31 @@
+
+
+OffscreenCanvas test: 2d.fillStyle.parse.hex4
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.fillStyle.parse.hex4
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.hex4.worker.js b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.hex4.worker.js
new file mode 100644
index 0000000000..fa84ca1352
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.hex4.worker.js
@@ -0,0 +1,27 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.fillStyle.parse.hex4
+// Description:
+// Note:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+
+ctx.fillStyle = '#f00';
+ctx.fillStyle = '#0f0f';
+ctx.fillRect(0, 0, 100, 50);
+_assertPixel(canvas, 50,25, 0,255,0,255);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.hex6.html b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.hex6.html
new file mode 100644
index 0000000000..69394c9a83
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.hex6.html
@@ -0,0 +1,31 @@
+
+
+OffscreenCanvas test: 2d.fillStyle.parse.hex6
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.fillStyle.parse.hex6
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.hex6.worker.js b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.hex6.worker.js
new file mode 100644
index 0000000000..cb432b4f99
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.hex6.worker.js
@@ -0,0 +1,27 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.fillStyle.parse.hex6
+// Description:
+// Note:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+
+ctx.fillStyle = '#f00';
+ctx.fillStyle = '#00fF00';
+ctx.fillRect(0, 0, 100, 50);
+_assertPixel(canvas, 50,25, 0,255,0,255);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.hex8.html b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.hex8.html
new file mode 100644
index 0000000000..80abfe3265
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.hex8.html
@@ -0,0 +1,31 @@
+
+
+OffscreenCanvas test: 2d.fillStyle.parse.hex8
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.fillStyle.parse.hex8
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.hex8.worker.js b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.hex8.worker.js
new file mode 100644
index 0000000000..e114569893
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.hex8.worker.js
@@ -0,0 +1,27 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.fillStyle.parse.hex8
+// Description:
+// Note:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+
+ctx.fillStyle = '#f00';
+ctx.fillStyle = '#00ff00ff';
+ctx.fillRect(0, 0, 100, 50);
+_assertPixel(canvas, 50,25, 0,255,0,255);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.hsl-1.html b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.hsl-1.html
new file mode 100644
index 0000000000..65e5c18747
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.hsl-1.html
@@ -0,0 +1,31 @@
+
+
+OffscreenCanvas test: 2d.fillStyle.parse.hsl-1
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.fillStyle.parse.hsl-1
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.hsl-1.worker.js b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.hsl-1.worker.js
new file mode 100644
index 0000000000..83d507c826
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.hsl-1.worker.js
@@ -0,0 +1,27 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.fillStyle.parse.hsl-1
+// Description:
+// Note:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+
+ctx.fillStyle = '#f00';
+ctx.fillStyle = 'hsl(120, 100%, 50%)';
+ctx.fillRect(0, 0, 100, 50);
+_assertPixel(canvas, 50,25, 0,255,0,255);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.hsl-2.html b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.hsl-2.html
new file mode 100644
index 0000000000..fdd78ad7be
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.hsl-2.html
@@ -0,0 +1,31 @@
+
+
+OffscreenCanvas test: 2d.fillStyle.parse.hsl-2
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.fillStyle.parse.hsl-2
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.hsl-2.worker.js b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.hsl-2.worker.js
new file mode 100644
index 0000000000..0dfc848716
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.hsl-2.worker.js
@@ -0,0 +1,27 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.fillStyle.parse.hsl-2
+// Description:
+// Note:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+
+ctx.fillStyle = '#f00';
+ctx.fillStyle = 'hsl( -240 , 100% , 50% )';
+ctx.fillRect(0, 0, 100, 50);
+_assertPixel(canvas, 50,25, 0,255,0,255);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.hsl-3.html b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.hsl-3.html
new file mode 100644
index 0000000000..5169244407
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.hsl-3.html
@@ -0,0 +1,31 @@
+
+
+OffscreenCanvas test: 2d.fillStyle.parse.hsl-3
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.fillStyle.parse.hsl-3
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.hsl-3.worker.js b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.hsl-3.worker.js
new file mode 100644
index 0000000000..54dec44d38
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.hsl-3.worker.js
@@ -0,0 +1,27 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.fillStyle.parse.hsl-3
+// Description:
+// Note:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+
+ctx.fillStyle = '#f00';
+ctx.fillStyle = 'hsl(360120, 100%, 50%)';
+ctx.fillRect(0, 0, 100, 50);
+_assertPixel(canvas, 50,25, 0,255,0,255);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.hsl-4.html b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.hsl-4.html
new file mode 100644
index 0000000000..90f30ab92c
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.hsl-4.html
@@ -0,0 +1,31 @@
+
+
+OffscreenCanvas test: 2d.fillStyle.parse.hsl-4
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.fillStyle.parse.hsl-4
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.hsl-4.worker.js b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.hsl-4.worker.js
new file mode 100644
index 0000000000..43c20668af
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.hsl-4.worker.js
@@ -0,0 +1,27 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.fillStyle.parse.hsl-4
+// Description:
+// Note:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+
+ctx.fillStyle = '#f00';
+ctx.fillStyle = 'hsl(-360240, 100%, 50%)';
+ctx.fillRect(0, 0, 100, 50);
+_assertPixel(canvas, 50,25, 0,255,0,255);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.hsl-5.html b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.hsl-5.html
new file mode 100644
index 0000000000..7760e236fd
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.hsl-5.html
@@ -0,0 +1,31 @@
+
+
+OffscreenCanvas test: 2d.fillStyle.parse.hsl-5
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.fillStyle.parse.hsl-5
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.hsl-5.worker.js b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.hsl-5.worker.js
new file mode 100644
index 0000000000..d4c95c10b2
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.hsl-5.worker.js
@@ -0,0 +1,27 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.fillStyle.parse.hsl-5
+// Description:
+// Note:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+
+ctx.fillStyle = '#f00';
+ctx.fillStyle = 'hsl(120.0, 100.0%, 50.0%)';
+ctx.fillRect(0, 0, 100, 50);
+_assertPixel(canvas, 50,25, 0,255,0,255);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.hsl-6.html b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.hsl-6.html
new file mode 100644
index 0000000000..795092931b
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.hsl-6.html
@@ -0,0 +1,31 @@
+
+
+OffscreenCanvas test: 2d.fillStyle.parse.hsl-6
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.fillStyle.parse.hsl-6
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.hsl-6.worker.js b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.hsl-6.worker.js
new file mode 100644
index 0000000000..f5acc2df25
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.hsl-6.worker.js
@@ -0,0 +1,27 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.fillStyle.parse.hsl-6
+// Description:
+// Note:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+
+ctx.fillStyle = '#f00';
+ctx.fillStyle = 'hsl(+120, +100%, +50%)';
+ctx.fillRect(0, 0, 100, 50);
+_assertPixel(canvas, 50,25, 0,255,0,255);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.hsl-clamp-1.html b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.hsl-clamp-1.html
new file mode 100644
index 0000000000..1b375468ba
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.hsl-clamp-1.html
@@ -0,0 +1,31 @@
+
+
+OffscreenCanvas test: 2d.fillStyle.parse.hsl-clamp-1
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.fillStyle.parse.hsl-clamp-1
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.hsl-clamp-1.worker.js b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.hsl-clamp-1.worker.js
new file mode 100644
index 0000000000..cc3308d7ed
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.hsl-clamp-1.worker.js
@@ -0,0 +1,27 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.fillStyle.parse.hsl-clamp-1
+// Description:
+// Note:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+
+ctx.fillStyle = '#f00';
+ctx.fillStyle = 'hsl(120, 200%, 50%)';
+ctx.fillRect(0, 0, 100, 50);
+_assertPixel(canvas, 50,25, 0,255,0,255);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.hsl-clamp-2.html b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.hsl-clamp-2.html
new file mode 100644
index 0000000000..0133f7f50a
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.hsl-clamp-2.html
@@ -0,0 +1,31 @@
+
+
+OffscreenCanvas test: 2d.fillStyle.parse.hsl-clamp-2
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.fillStyle.parse.hsl-clamp-2
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.hsl-clamp-2.worker.js b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.hsl-clamp-2.worker.js
new file mode 100644
index 0000000000..48c23aa10a
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.hsl-clamp-2.worker.js
@@ -0,0 +1,27 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.fillStyle.parse.hsl-clamp-2
+// Description:
+// Note:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+
+ctx.fillStyle = '#f00';
+ctx.fillStyle = 'hsl(120, -200%, 49.9%)';
+ctx.fillRect(0, 0, 100, 50);
+_assertPixel(canvas, 50,25, 127,127,127,255);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.hsl-clamp-3.html b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.hsl-clamp-3.html
new file mode 100644
index 0000000000..e35355c21c
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.hsl-clamp-3.html
@@ -0,0 +1,31 @@
+
+
+OffscreenCanvas test: 2d.fillStyle.parse.hsl-clamp-3
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.fillStyle.parse.hsl-clamp-3
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.hsl-clamp-3.worker.js b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.hsl-clamp-3.worker.js
new file mode 100644
index 0000000000..ef1ac418c9
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.hsl-clamp-3.worker.js
@@ -0,0 +1,27 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.fillStyle.parse.hsl-clamp-3
+// Description:
+// Note:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+
+ctx.fillStyle = '#f00';
+ctx.fillStyle = 'hsl(120, 100%, 200%)';
+ctx.fillRect(0, 0, 100, 50);
+_assertPixel(canvas, 50,25, 255,255,255,255);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.hsl-clamp-4.html b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.hsl-clamp-4.html
new file mode 100644
index 0000000000..c42b6f1f5d
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.hsl-clamp-4.html
@@ -0,0 +1,31 @@
+
+
+OffscreenCanvas test: 2d.fillStyle.parse.hsl-clamp-4
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.fillStyle.parse.hsl-clamp-4
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.hsl-clamp-4.worker.js b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.hsl-clamp-4.worker.js
new file mode 100644
index 0000000000..061685dbde
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.hsl-clamp-4.worker.js
@@ -0,0 +1,27 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.fillStyle.parse.hsl-clamp-4
+// Description:
+// Note:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+
+ctx.fillStyle = '#f00';
+ctx.fillStyle = 'hsl(120, 100%, -200%)';
+ctx.fillRect(0, 0, 100, 50);
+_assertPixel(canvas, 50,25, 0,0,0,255);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.hsla-1.html b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.hsla-1.html
new file mode 100644
index 0000000000..0defd457ab
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.hsla-1.html
@@ -0,0 +1,31 @@
+
+
+OffscreenCanvas test: 2d.fillStyle.parse.hsla-1
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.fillStyle.parse.hsla-1
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.hsla-1.worker.js b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.hsla-1.worker.js
new file mode 100644
index 0000000000..64a26e6ca3
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.hsla-1.worker.js
@@ -0,0 +1,27 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.fillStyle.parse.hsla-1
+// Description:
+// Note:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+
+ctx.fillStyle = '#f00';
+ctx.fillStyle = 'hsla(120, 100%, 50%, 0.499)';
+ctx.fillRect(0, 0, 100, 50);
+_assertPixel(canvas, 50,25, 0,255,0,127);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.hsla-2.html b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.hsla-2.html
new file mode 100644
index 0000000000..0498edd6da
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.hsla-2.html
@@ -0,0 +1,31 @@
+
+
+OffscreenCanvas test: 2d.fillStyle.parse.hsla-2
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.fillStyle.parse.hsla-2
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.hsla-2.worker.js b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.hsla-2.worker.js
new file mode 100644
index 0000000000..6101f0e3ab
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.hsla-2.worker.js
@@ -0,0 +1,27 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.fillStyle.parse.hsla-2
+// Description:
+// Note:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+
+ctx.fillStyle = '#f00';
+ctx.fillStyle = 'hsla( 120.0 , 100.0% , 50.0% , 1 )';
+ctx.fillRect(0, 0, 100, 50);
+_assertPixel(canvas, 50,25, 0,255,0,255);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.hsla-clamp-1.html b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.hsla-clamp-1.html
new file mode 100644
index 0000000000..313ecf277c
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.hsla-clamp-1.html
@@ -0,0 +1,31 @@
+
+
+OffscreenCanvas test: 2d.fillStyle.parse.hsla-clamp-1
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.fillStyle.parse.hsla-clamp-1
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.hsla-clamp-1.worker.js b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.hsla-clamp-1.worker.js
new file mode 100644
index 0000000000..8724efd28a
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.hsla-clamp-1.worker.js
@@ -0,0 +1,27 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.fillStyle.parse.hsla-clamp-1
+// Description:
+// Note:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+
+ctx.fillStyle = '#f00';
+ctx.fillStyle = 'hsla(120, 200%, 50%, 1)';
+ctx.fillRect(0, 0, 100, 50);
+_assertPixel(canvas, 50,25, 0,255,0,255);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.hsla-clamp-2.html b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.hsla-clamp-2.html
new file mode 100644
index 0000000000..761471f43a
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.hsla-clamp-2.html
@@ -0,0 +1,31 @@
+
+
+OffscreenCanvas test: 2d.fillStyle.parse.hsla-clamp-2
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.fillStyle.parse.hsla-clamp-2
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.hsla-clamp-2.worker.js b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.hsla-clamp-2.worker.js
new file mode 100644
index 0000000000..af4271c66c
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.hsla-clamp-2.worker.js
@@ -0,0 +1,27 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.fillStyle.parse.hsla-clamp-2
+// Description:
+// Note:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+
+ctx.fillStyle = '#f00';
+ctx.fillStyle = 'hsla(120, -200%, 49.9%, 1)';
+ctx.fillRect(0, 0, 100, 50);
+_assertPixel(canvas, 50,25, 127,127,127,255);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.hsla-clamp-3.html b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.hsla-clamp-3.html
new file mode 100644
index 0000000000..287a23a58a
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.hsla-clamp-3.html
@@ -0,0 +1,31 @@
+
+
+OffscreenCanvas test: 2d.fillStyle.parse.hsla-clamp-3
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.fillStyle.parse.hsla-clamp-3
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.hsla-clamp-3.worker.js b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.hsla-clamp-3.worker.js
new file mode 100644
index 0000000000..1e10a76dc2
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.hsla-clamp-3.worker.js
@@ -0,0 +1,27 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.fillStyle.parse.hsla-clamp-3
+// Description:
+// Note:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+
+ctx.fillStyle = '#f00';
+ctx.fillStyle = 'hsla(120, 100%, 200%, 1)';
+ctx.fillRect(0, 0, 100, 50);
+_assertPixel(canvas, 50,25, 255,255,255,255);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.hsla-clamp-4.html b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.hsla-clamp-4.html
new file mode 100644
index 0000000000..a0e420cab2
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.hsla-clamp-4.html
@@ -0,0 +1,31 @@
+
+
+OffscreenCanvas test: 2d.fillStyle.parse.hsla-clamp-4
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.fillStyle.parse.hsla-clamp-4
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.hsla-clamp-4.worker.js b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.hsla-clamp-4.worker.js
new file mode 100644
index 0000000000..e746bc3472
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.hsla-clamp-4.worker.js
@@ -0,0 +1,27 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.fillStyle.parse.hsla-clamp-4
+// Description:
+// Note:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+
+ctx.fillStyle = '#f00';
+ctx.fillStyle = 'hsla(120, 100%, -200%, 1)';
+ctx.fillRect(0, 0, 100, 50);
+_assertPixel(canvas, 50,25, 0,0,0,255);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.hsla-clamp-5.html b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.hsla-clamp-5.html
new file mode 100644
index 0000000000..0683719749
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.hsla-clamp-5.html
@@ -0,0 +1,31 @@
+
+
+OffscreenCanvas test: 2d.fillStyle.parse.hsla-clamp-5
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.fillStyle.parse.hsla-clamp-5
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.hsla-clamp-5.worker.js b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.hsla-clamp-5.worker.js
new file mode 100644
index 0000000000..61d86a8a95
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.hsla-clamp-5.worker.js
@@ -0,0 +1,27 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.fillStyle.parse.hsla-clamp-5
+// Description:
+// Note:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+
+ctx.fillStyle = '#f00';
+ctx.fillStyle = 'hsla(120, 100%, 50%, 2)';
+ctx.fillRect(0, 0, 100, 50);
+_assertPixel(canvas, 50,25, 0,255,0,255);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.hsla-clamp-6.html b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.hsla-clamp-6.html
new file mode 100644
index 0000000000..a810639519
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.hsla-clamp-6.html
@@ -0,0 +1,31 @@
+
+
+OffscreenCanvas test: 2d.fillStyle.parse.hsla-clamp-6
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.fillStyle.parse.hsla-clamp-6
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.hsla-clamp-6.worker.js b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.hsla-clamp-6.worker.js
new file mode 100644
index 0000000000..57c0d587ee
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.hsla-clamp-6.worker.js
@@ -0,0 +1,27 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.fillStyle.parse.hsla-clamp-6
+// Description:
+// Note:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+
+ctx.fillStyle = '#f00';
+ctx.fillStyle = 'hsla(120, 100%, 0%, -2)';
+ctx.fillRect(0, 0, 100, 50);
+_assertPixel(canvas, 50,25, 0,0,0,0);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.html4.html b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.html4.html
new file mode 100644
index 0000000000..767768ab2f
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.html4.html
@@ -0,0 +1,31 @@
+
+
+OffscreenCanvas test: 2d.fillStyle.parse.html4
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.fillStyle.parse.html4
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.html4.worker.js b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.html4.worker.js
new file mode 100644
index 0000000000..a8b8552afb
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.html4.worker.js
@@ -0,0 +1,27 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.fillStyle.parse.html4
+// Description:
+// Note:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+
+ctx.fillStyle = '#f00';
+ctx.fillStyle = 'limE';
+ctx.fillRect(0, 0, 100, 50);
+_assertPixel(canvas, 50,25, 0,255,0,255);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.css-color-4-hsl-1.html b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.css-color-4-hsl-1.html
new file mode 100644
index 0000000000..1a227a436a
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.css-color-4-hsl-1.html
@@ -0,0 +1,31 @@
+
+
+OffscreenCanvas test: 2d.fillStyle.parse.invalid.css-color-4-hsl-1
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.fillStyle.parse.invalid.css-color-4-hsl-1
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.css-color-4-hsl-1.worker.js b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.css-color-4-hsl-1.worker.js
new file mode 100644
index 0000000000..20fc879bc6
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.css-color-4-hsl-1.worker.js
@@ -0,0 +1,27 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.fillStyle.parse.invalid.css-color-4-hsl-1
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+
+ctx.fillStyle = '#0f0';
+try { ctx.fillStyle = 'hsl(0, 100%, 50% / 1)'; } catch (e) { } // this shouldn't throw, but it shouldn't matter here if it does
+ctx.fillRect(0, 0, 100, 50);
+_assertPixel(canvas, 50,25, 0,255,0,255);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.css-color-4-hsl-2.html b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.css-color-4-hsl-2.html
new file mode 100644
index 0000000000..36b95ed247
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.css-color-4-hsl-2.html
@@ -0,0 +1,31 @@
+
+
+OffscreenCanvas test: 2d.fillStyle.parse.invalid.css-color-4-hsl-2
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.fillStyle.parse.invalid.css-color-4-hsl-2
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.css-color-4-hsl-2.worker.js b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.css-color-4-hsl-2.worker.js
new file mode 100644
index 0000000000..c2c6fc0ace
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.css-color-4-hsl-2.worker.js
@@ -0,0 +1,27 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.fillStyle.parse.invalid.css-color-4-hsl-2
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+
+ctx.fillStyle = '#0f0';
+try { ctx.fillStyle = 'hsl(0 100% 50%, 1)'; } catch (e) { } // this shouldn't throw, but it shouldn't matter here if it does
+ctx.fillRect(0, 0, 100, 50);
+_assertPixel(canvas, 50,25, 0,255,0,255);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.css-color-4-hsl-3.html b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.css-color-4-hsl-3.html
new file mode 100644
index 0000000000..d208c6296b
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.css-color-4-hsl-3.html
@@ -0,0 +1,31 @@
+
+
+OffscreenCanvas test: 2d.fillStyle.parse.invalid.css-color-4-hsl-3
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.fillStyle.parse.invalid.css-color-4-hsl-3
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.css-color-4-hsl-3.worker.js b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.css-color-4-hsl-3.worker.js
new file mode 100644
index 0000000000..c2f90ef320
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.css-color-4-hsl-3.worker.js
@@ -0,0 +1,27 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.fillStyle.parse.invalid.css-color-4-hsl-3
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+
+ctx.fillStyle = '#0f0';
+try { ctx.fillStyle = 'hsl(0, 100% 50%)'; } catch (e) { } // this shouldn't throw, but it shouldn't matter here if it does
+ctx.fillRect(0, 0, 100, 50);
+_assertPixel(canvas, 50,25, 0,255,0,255);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.css-color-4-hsl-4.html b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.css-color-4-hsl-4.html
new file mode 100644
index 0000000000..2fba5aaf9c
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.css-color-4-hsl-4.html
@@ -0,0 +1,31 @@
+
+
+OffscreenCanvas test: 2d.fillStyle.parse.invalid.css-color-4-hsl-4
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.fillStyle.parse.invalid.css-color-4-hsl-4
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.css-color-4-hsl-4.worker.js b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.css-color-4-hsl-4.worker.js
new file mode 100644
index 0000000000..6903ae94c2
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.css-color-4-hsl-4.worker.js
@@ -0,0 +1,27 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.fillStyle.parse.invalid.css-color-4-hsl-4
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+
+ctx.fillStyle = '#0f0';
+try { ctx.fillStyle = 'hsl(0 100% 50% /)'; } catch (e) { } // this shouldn't throw, but it shouldn't matter here if it does
+ctx.fillRect(0, 0, 100, 50);
+_assertPixel(canvas, 50,25, 0,255,0,255);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.css-color-4-hsl-5.html b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.css-color-4-hsl-5.html
new file mode 100644
index 0000000000..f340a52aa8
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.css-color-4-hsl-5.html
@@ -0,0 +1,31 @@
+
+
+OffscreenCanvas test: 2d.fillStyle.parse.invalid.css-color-4-hsl-5
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.fillStyle.parse.invalid.css-color-4-hsl-5
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.css-color-4-hsl-5.worker.js b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.css-color-4-hsl-5.worker.js
new file mode 100644
index 0000000000..8f0cfc0cba
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.css-color-4-hsl-5.worker.js
@@ -0,0 +1,27 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.fillStyle.parse.invalid.css-color-4-hsl-5
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+
+ctx.fillStyle = '#0f0';
+try { ctx.fillStyle = 'hsl(0, 100%, 50% /)'; } catch (e) { } // this shouldn't throw, but it shouldn't matter here if it does
+ctx.fillRect(0, 0, 100, 50);
+_assertPixel(canvas, 50,25, 0,255,0,255);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.css-color-4-hsla-1.html b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.css-color-4-hsla-1.html
new file mode 100644
index 0000000000..834a1b7b18
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.css-color-4-hsla-1.html
@@ -0,0 +1,31 @@
+
+
+OffscreenCanvas test: 2d.fillStyle.parse.invalid.css-color-4-hsla-1
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.fillStyle.parse.invalid.css-color-4-hsla-1
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.css-color-4-hsla-1.worker.js b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.css-color-4-hsla-1.worker.js
new file mode 100644
index 0000000000..45e074321e
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.css-color-4-hsla-1.worker.js
@@ -0,0 +1,27 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.fillStyle.parse.invalid.css-color-4-hsla-1
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+
+ctx.fillStyle = '#0f0';
+try { ctx.fillStyle = 'hsla(0, 100%, 50% / 1)'; } catch (e) { } // this shouldn't throw, but it shouldn't matter here if it does
+ctx.fillRect(0, 0, 100, 50);
+_assertPixel(canvas, 50,25, 0,255,0,255);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.css-color-4-hsla-2.html b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.css-color-4-hsla-2.html
new file mode 100644
index 0000000000..cd33bbf800
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.css-color-4-hsla-2.html
@@ -0,0 +1,31 @@
+
+
+OffscreenCanvas test: 2d.fillStyle.parse.invalid.css-color-4-hsla-2
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.fillStyle.parse.invalid.css-color-4-hsla-2
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.css-color-4-hsla-2.worker.js b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.css-color-4-hsla-2.worker.js
new file mode 100644
index 0000000000..e0d75717db
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.css-color-4-hsla-2.worker.js
@@ -0,0 +1,27 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.fillStyle.parse.invalid.css-color-4-hsla-2
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+
+ctx.fillStyle = '#0f0';
+try { ctx.fillStyle = 'hsla(0 100% 50%, 1)'; } catch (e) { } // this shouldn't throw, but it shouldn't matter here if it does
+ctx.fillRect(0, 0, 100, 50);
+_assertPixel(canvas, 50,25, 0,255,0,255);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.css-color-4-hsla-3.html b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.css-color-4-hsla-3.html
new file mode 100644
index 0000000000..fd01b7623a
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.css-color-4-hsla-3.html
@@ -0,0 +1,31 @@
+
+
+OffscreenCanvas test: 2d.fillStyle.parse.invalid.css-color-4-hsla-3
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.fillStyle.parse.invalid.css-color-4-hsla-3
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.css-color-4-hsla-3.worker.js b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.css-color-4-hsla-3.worker.js
new file mode 100644
index 0000000000..4adb92bb64
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.css-color-4-hsla-3.worker.js
@@ -0,0 +1,27 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.fillStyle.parse.invalid.css-color-4-hsla-3
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+
+ctx.fillStyle = '#0f0';
+try { ctx.fillStyle = 'hsla(0, 100% 50%)'; } catch (e) { } // this shouldn't throw, but it shouldn't matter here if it does
+ctx.fillRect(0, 0, 100, 50);
+_assertPixel(canvas, 50,25, 0,255,0,255);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.css-color-4-rgb-1.html b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.css-color-4-rgb-1.html
new file mode 100644
index 0000000000..f1e1b2ab37
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.css-color-4-rgb-1.html
@@ -0,0 +1,31 @@
+
+
+OffscreenCanvas test: 2d.fillStyle.parse.invalid.css-color-4-rgb-1
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.fillStyle.parse.invalid.css-color-4-rgb-1
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.css-color-4-rgb-1.worker.js b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.css-color-4-rgb-1.worker.js
new file mode 100644
index 0000000000..450556b31b
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.css-color-4-rgb-1.worker.js
@@ -0,0 +1,27 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.fillStyle.parse.invalid.css-color-4-rgb-1
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+
+ctx.fillStyle = '#0f0';
+try { ctx.fillStyle = 'rgb(255, 0, 0 / 1)'; } catch (e) { } // this shouldn't throw, but it shouldn't matter here if it does
+ctx.fillRect(0, 0, 100, 50);
+_assertPixel(canvas, 50,25, 0,255,0,255);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.css-color-4-rgb-2.html b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.css-color-4-rgb-2.html
new file mode 100644
index 0000000000..dc22f99e3d
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.css-color-4-rgb-2.html
@@ -0,0 +1,31 @@
+
+
+OffscreenCanvas test: 2d.fillStyle.parse.invalid.css-color-4-rgb-2
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.fillStyle.parse.invalid.css-color-4-rgb-2
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.css-color-4-rgb-2.worker.js b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.css-color-4-rgb-2.worker.js
new file mode 100644
index 0000000000..35217d1b80
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.css-color-4-rgb-2.worker.js
@@ -0,0 +1,27 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.fillStyle.parse.invalid.css-color-4-rgb-2
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+
+ctx.fillStyle = '#0f0';
+try { ctx.fillStyle = 'rgb(255 0 0, 1)'; } catch (e) { } // this shouldn't throw, but it shouldn't matter here if it does
+ctx.fillRect(0, 0, 100, 50);
+_assertPixel(canvas, 50,25, 0,255,0,255);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.css-color-4-rgb-3.html b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.css-color-4-rgb-3.html
new file mode 100644
index 0000000000..434c15eccb
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.css-color-4-rgb-3.html
@@ -0,0 +1,31 @@
+
+
+OffscreenCanvas test: 2d.fillStyle.parse.invalid.css-color-4-rgb-3
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.fillStyle.parse.invalid.css-color-4-rgb-3
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.css-color-4-rgb-3.worker.js b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.css-color-4-rgb-3.worker.js
new file mode 100644
index 0000000000..28200cfdd5
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.css-color-4-rgb-3.worker.js
@@ -0,0 +1,27 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.fillStyle.parse.invalid.css-color-4-rgb-3
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+
+ctx.fillStyle = '#0f0';
+try { ctx.fillStyle = 'rgb(255, 0 0)'; } catch (e) { } // this shouldn't throw, but it shouldn't matter here if it does
+ctx.fillRect(0, 0, 100, 50);
+_assertPixel(canvas, 50,25, 0,255,0,255);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.css-color-4-rgb-4.html b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.css-color-4-rgb-4.html
new file mode 100644
index 0000000000..58ed0e7318
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.css-color-4-rgb-4.html
@@ -0,0 +1,31 @@
+
+
+OffscreenCanvas test: 2d.fillStyle.parse.invalid.css-color-4-rgb-4
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.fillStyle.parse.invalid.css-color-4-rgb-4
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.css-color-4-rgb-4.worker.js b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.css-color-4-rgb-4.worker.js
new file mode 100644
index 0000000000..1830996c26
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.css-color-4-rgb-4.worker.js
@@ -0,0 +1,27 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.fillStyle.parse.invalid.css-color-4-rgb-4
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+
+ctx.fillStyle = '#0f0';
+try { ctx.fillStyle = 'rgb(0 0 0 /)'; } catch (e) { } // this shouldn't throw, but it shouldn't matter here if it does
+ctx.fillRect(0, 0, 100, 50);
+_assertPixel(canvas, 50,25, 0,255,0,255);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.css-color-4-rgb-5.html b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.css-color-4-rgb-5.html
new file mode 100644
index 0000000000..95643739c4
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.css-color-4-rgb-5.html
@@ -0,0 +1,31 @@
+
+
+OffscreenCanvas test: 2d.fillStyle.parse.invalid.css-color-4-rgb-5
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.fillStyle.parse.invalid.css-color-4-rgb-5
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.css-color-4-rgb-5.worker.js b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.css-color-4-rgb-5.worker.js
new file mode 100644
index 0000000000..4591bbde34
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.css-color-4-rgb-5.worker.js
@@ -0,0 +1,27 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.fillStyle.parse.invalid.css-color-4-rgb-5
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+
+ctx.fillStyle = '#0f0';
+try { ctx.fillStyle = 'rgb(0, 0, 0 /)'; } catch (e) { } // this shouldn't throw, but it shouldn't matter here if it does
+ctx.fillRect(0, 0, 100, 50);
+_assertPixel(canvas, 50,25, 0,255,0,255);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.css-color-4-rgba-1.html b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.css-color-4-rgba-1.html
new file mode 100644
index 0000000000..5ae093eae1
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.css-color-4-rgba-1.html
@@ -0,0 +1,31 @@
+
+
+OffscreenCanvas test: 2d.fillStyle.parse.invalid.css-color-4-rgba-1
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.fillStyle.parse.invalid.css-color-4-rgba-1
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.css-color-4-rgba-1.worker.js b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.css-color-4-rgba-1.worker.js
new file mode 100644
index 0000000000..d9a315c98d
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.css-color-4-rgba-1.worker.js
@@ -0,0 +1,27 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.fillStyle.parse.invalid.css-color-4-rgba-1
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+
+ctx.fillStyle = '#0f0';
+try { ctx.fillStyle = 'rgba(255, 0, 0 / 1)'; } catch (e) { } // this shouldn't throw, but it shouldn't matter here if it does
+ctx.fillRect(0, 0, 100, 50);
+_assertPixel(canvas, 50,25, 0,255,0,255);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.css-color-4-rgba-2.html b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.css-color-4-rgba-2.html
new file mode 100644
index 0000000000..036f389153
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.css-color-4-rgba-2.html
@@ -0,0 +1,31 @@
+
+
+OffscreenCanvas test: 2d.fillStyle.parse.invalid.css-color-4-rgba-2
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.fillStyle.parse.invalid.css-color-4-rgba-2
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.css-color-4-rgba-2.worker.js b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.css-color-4-rgba-2.worker.js
new file mode 100644
index 0000000000..1fc2f5d863
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.css-color-4-rgba-2.worker.js
@@ -0,0 +1,27 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.fillStyle.parse.invalid.css-color-4-rgba-2
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+
+ctx.fillStyle = '#0f0';
+try { ctx.fillStyle = 'rgba(255 0 0, 1)'; } catch (e) { } // this shouldn't throw, but it shouldn't matter here if it does
+ctx.fillRect(0, 0, 100, 50);
+_assertPixel(canvas, 50,25, 0,255,0,255);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.css-color-4-rgba-3.html b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.css-color-4-rgba-3.html
new file mode 100644
index 0000000000..663557987a
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.css-color-4-rgba-3.html
@@ -0,0 +1,31 @@
+
+
+OffscreenCanvas test: 2d.fillStyle.parse.invalid.css-color-4-rgba-3
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.fillStyle.parse.invalid.css-color-4-rgba-3
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.css-color-4-rgba-3.worker.js b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.css-color-4-rgba-3.worker.js
new file mode 100644
index 0000000000..1eadf9125b
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.css-color-4-rgba-3.worker.js
@@ -0,0 +1,27 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.fillStyle.parse.invalid.css-color-4-rgba-3
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+
+ctx.fillStyle = '#0f0';
+try { ctx.fillStyle = 'rgba(255, 0 0)'; } catch (e) { } // this shouldn't throw, but it shouldn't matter here if it does
+ctx.fillRect(0, 0, 100, 50);
+_assertPixel(canvas, 50,25, 0,255,0,255);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.hex1.html b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.hex1.html
new file mode 100644
index 0000000000..83e1c410f5
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.hex1.html
@@ -0,0 +1,31 @@
+
+
+OffscreenCanvas test: 2d.fillStyle.parse.invalid.hex1
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.fillStyle.parse.invalid.hex1
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.hex1.worker.js b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.hex1.worker.js
new file mode 100644
index 0000000000..3807fd3311
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.hex1.worker.js
@@ -0,0 +1,27 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.fillStyle.parse.invalid.hex1
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+
+ctx.fillStyle = '#0f0';
+try { ctx.fillStyle = '#f'; } catch (e) { } // this shouldn't throw, but it shouldn't matter here if it does
+ctx.fillRect(0, 0, 100, 50);
+_assertPixel(canvas, 50,25, 0,255,0,255);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.hex2.html b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.hex2.html
new file mode 100644
index 0000000000..453ec4bd5c
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.hex2.html
@@ -0,0 +1,31 @@
+
+
+OffscreenCanvas test: 2d.fillStyle.parse.invalid.hex2
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.fillStyle.parse.invalid.hex2
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.hex2.worker.js b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.hex2.worker.js
new file mode 100644
index 0000000000..9bb7e2c33c
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.hex2.worker.js
@@ -0,0 +1,27 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.fillStyle.parse.invalid.hex2
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+
+ctx.fillStyle = '#0f0';
+try { ctx.fillStyle = '#f0'; } catch (e) { } // this shouldn't throw, but it shouldn't matter here if it does
+ctx.fillRect(0, 0, 100, 50);
+_assertPixel(canvas, 50,25, 0,255,0,255);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.hex3.html b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.hex3.html
new file mode 100644
index 0000000000..c1d4e8c1e8
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.hex3.html
@@ -0,0 +1,31 @@
+
+
+OffscreenCanvas test: 2d.fillStyle.parse.invalid.hex3
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.fillStyle.parse.invalid.hex3
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.hex3.worker.js b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.hex3.worker.js
new file mode 100644
index 0000000000..4eaa0b0d0f
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.hex3.worker.js
@@ -0,0 +1,27 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.fillStyle.parse.invalid.hex3
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+
+ctx.fillStyle = '#0f0';
+try { ctx.fillStyle = '#g00'; } catch (e) { } // this shouldn't throw, but it shouldn't matter here if it does
+ctx.fillRect(0, 0, 100, 50);
+_assertPixel(canvas, 50,25, 0,255,0,255);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.hex4.html b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.hex4.html
new file mode 100644
index 0000000000..89c23a0074
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.hex4.html
@@ -0,0 +1,31 @@
+
+
+OffscreenCanvas test: 2d.fillStyle.parse.invalid.hex4
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.fillStyle.parse.invalid.hex4
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.hex4.worker.js b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.hex4.worker.js
new file mode 100644
index 0000000000..ceffb191b2
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.hex4.worker.js
@@ -0,0 +1,27 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.fillStyle.parse.invalid.hex4
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+
+ctx.fillStyle = '#0f0';
+try { ctx.fillStyle = '#fg00'; } catch (e) { } // this shouldn't throw, but it shouldn't matter here if it does
+ctx.fillRect(0, 0, 100, 50);
+_assertPixel(canvas, 50,25, 0,255,0,255);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.hex5.html b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.hex5.html
new file mode 100644
index 0000000000..4d62d09be0
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.hex5.html
@@ -0,0 +1,31 @@
+
+
+OffscreenCanvas test: 2d.fillStyle.parse.invalid.hex5
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.fillStyle.parse.invalid.hex5
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.hex5.worker.js b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.hex5.worker.js
new file mode 100644
index 0000000000..7225544f8b
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.hex5.worker.js
@@ -0,0 +1,27 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.fillStyle.parse.invalid.hex5
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+
+ctx.fillStyle = '#0f0';
+try { ctx.fillStyle = '#ff000'; } catch (e) { } // this shouldn't throw, but it shouldn't matter here if it does
+ctx.fillRect(0, 0, 100, 50);
+_assertPixel(canvas, 50,25, 0,255,0,255);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.hex6.html b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.hex6.html
new file mode 100644
index 0000000000..69dfdc723f
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.hex6.html
@@ -0,0 +1,31 @@
+
+
+OffscreenCanvas test: 2d.fillStyle.parse.invalid.hex6
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.fillStyle.parse.invalid.hex6
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.hex6.worker.js b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.hex6.worker.js
new file mode 100644
index 0000000000..2e5a93b49a
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.hex6.worker.js
@@ -0,0 +1,27 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.fillStyle.parse.invalid.hex6
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+
+ctx.fillStyle = '#0f0';
+try { ctx.fillStyle = '#fg0000'; } catch (e) { } // this shouldn't throw, but it shouldn't matter here if it does
+ctx.fillRect(0, 0, 100, 50);
+_assertPixel(canvas, 50,25, 0,255,0,255);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.hex7.html b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.hex7.html
new file mode 100644
index 0000000000..2be93ca69a
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.hex7.html
@@ -0,0 +1,31 @@
+
+
+OffscreenCanvas test: 2d.fillStyle.parse.invalid.hex7
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.fillStyle.parse.invalid.hex7
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.hex7.worker.js b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.hex7.worker.js
new file mode 100644
index 0000000000..fbd4a887c5
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.hex7.worker.js
@@ -0,0 +1,27 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.fillStyle.parse.invalid.hex7
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+
+ctx.fillStyle = '#0f0';
+try { ctx.fillStyle = '#ff0000f'; } catch (e) { } // this shouldn't throw, but it shouldn't matter here if it does
+ctx.fillRect(0, 0, 100, 50);
+_assertPixel(canvas, 50,25, 0,255,0,255);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.hex8.html b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.hex8.html
new file mode 100644
index 0000000000..f67758d42e
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.hex8.html
@@ -0,0 +1,31 @@
+
+
+OffscreenCanvas test: 2d.fillStyle.parse.invalid.hex8
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.fillStyle.parse.invalid.hex8
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.hex8.worker.js b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.hex8.worker.js
new file mode 100644
index 0000000000..fcc230ce9d
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.hex8.worker.js
@@ -0,0 +1,27 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.fillStyle.parse.invalid.hex8
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+
+ctx.fillStyle = '#0f0';
+try { ctx.fillStyle = '#fg0000ff'; } catch (e) { } // this shouldn't throw, but it shouldn't matter here if it does
+ctx.fillRect(0, 0, 100, 50);
+_assertPixel(canvas, 50,25, 0,255,0,255);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.hsl-1.html b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.hsl-1.html
new file mode 100644
index 0000000000..54e6711137
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.hsl-1.html
@@ -0,0 +1,31 @@
+
+
+OffscreenCanvas test: 2d.fillStyle.parse.invalid.hsl-1
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.fillStyle.parse.invalid.hsl-1
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.hsl-1.worker.js b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.hsl-1.worker.js
new file mode 100644
index 0000000000..3b0bb9165b
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.hsl-1.worker.js
@@ -0,0 +1,27 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.fillStyle.parse.invalid.hsl-1
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+
+ctx.fillStyle = '#0f0';
+try { ctx.fillStyle = 'hsl(0%, 100%, 50%)'; } catch (e) { } // this shouldn't throw, but it shouldn't matter here if it does
+ctx.fillRect(0, 0, 100, 50);
+_assertPixel(canvas, 50,25, 0,255,0,255);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.hsl-2.html b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.hsl-2.html
new file mode 100644
index 0000000000..7614b8c34d
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.hsl-2.html
@@ -0,0 +1,31 @@
+
+
+OffscreenCanvas test: 2d.fillStyle.parse.invalid.hsl-2
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.fillStyle.parse.invalid.hsl-2
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.hsl-2.worker.js b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.hsl-2.worker.js
new file mode 100644
index 0000000000..ec906f7fa1
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.hsl-2.worker.js
@@ -0,0 +1,27 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.fillStyle.parse.invalid.hsl-2
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+
+ctx.fillStyle = '#0f0';
+try { ctx.fillStyle = 'hsl(z, 100%, 50%)'; } catch (e) { } // this shouldn't throw, but it shouldn't matter here if it does
+ctx.fillRect(0, 0, 100, 50);
+_assertPixel(canvas, 50,25, 0,255,0,255);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.hsl-3.html b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.hsl-3.html
new file mode 100644
index 0000000000..13d19ac924
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.hsl-3.html
@@ -0,0 +1,31 @@
+
+
+OffscreenCanvas test: 2d.fillStyle.parse.invalid.hsl-3
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.fillStyle.parse.invalid.hsl-3
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.hsl-3.worker.js b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.hsl-3.worker.js
new file mode 100644
index 0000000000..370eba2097
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.hsl-3.worker.js
@@ -0,0 +1,27 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.fillStyle.parse.invalid.hsl-3
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+
+ctx.fillStyle = '#0f0';
+try { ctx.fillStyle = 'hsl(0, 0, 50%)'; } catch (e) { } // this shouldn't throw, but it shouldn't matter here if it does
+ctx.fillRect(0, 0, 100, 50);
+_assertPixel(canvas, 50,25, 0,255,0,255);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.hsl-4.html b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.hsl-4.html
new file mode 100644
index 0000000000..9f01aa2180
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.hsl-4.html
@@ -0,0 +1,31 @@
+
+
+OffscreenCanvas test: 2d.fillStyle.parse.invalid.hsl-4
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.fillStyle.parse.invalid.hsl-4
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.hsl-4.worker.js b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.hsl-4.worker.js
new file mode 100644
index 0000000000..9d53d26c96
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.hsl-4.worker.js
@@ -0,0 +1,27 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.fillStyle.parse.invalid.hsl-4
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+
+ctx.fillStyle = '#0f0';
+try { ctx.fillStyle = 'hsl(0, 100%, 0)'; } catch (e) { } // this shouldn't throw, but it shouldn't matter here if it does
+ctx.fillRect(0, 0, 100, 50);
+_assertPixel(canvas, 50,25, 0,255,0,255);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.hsl-5.html b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.hsl-5.html
new file mode 100644
index 0000000000..23f38067a9
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.hsl-5.html
@@ -0,0 +1,31 @@
+
+
+OffscreenCanvas test: 2d.fillStyle.parse.invalid.hsl-5
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.fillStyle.parse.invalid.hsl-5
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.hsl-5.worker.js b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.hsl-5.worker.js
new file mode 100644
index 0000000000..98f4b1c721
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.hsl-5.worker.js
@@ -0,0 +1,27 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.fillStyle.parse.invalid.hsl-5
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+
+ctx.fillStyle = '#0f0';
+try { ctx.fillStyle = 'hsl(0, 100.%, 50%)'; } catch (e) { } // this shouldn't throw, but it shouldn't matter here if it does
+ctx.fillRect(0, 0, 100, 50);
+_assertPixel(canvas, 50,25, 0,255,0,255);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.hsl-6.html b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.hsl-6.html
new file mode 100644
index 0000000000..405a0e52b2
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.hsl-6.html
@@ -0,0 +1,31 @@
+
+
+OffscreenCanvas test: 2d.fillStyle.parse.invalid.hsl-6
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.fillStyle.parse.invalid.hsl-6
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.hsl-6.worker.js b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.hsl-6.worker.js
new file mode 100644
index 0000000000..8718547002
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.hsl-6.worker.js
@@ -0,0 +1,27 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.fillStyle.parse.invalid.hsl-6
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+
+ctx.fillStyle = '#0f0';
+try { ctx.fillStyle = 'hsl(0, 100%, 50%,)'; } catch (e) { } // this shouldn't throw, but it shouldn't matter here if it does
+ctx.fillRect(0, 0, 100, 50);
+_assertPixel(canvas, 50,25, 0,255,0,255);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.hsla-1.html b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.hsla-1.html
new file mode 100644
index 0000000000..ae9d7986b7
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.hsla-1.html
@@ -0,0 +1,31 @@
+
+
+OffscreenCanvas test: 2d.fillStyle.parse.invalid.hsla-1
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.fillStyle.parse.invalid.hsla-1
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.hsla-1.worker.js b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.hsla-1.worker.js
new file mode 100644
index 0000000000..b6a70f2a42
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.hsla-1.worker.js
@@ -0,0 +1,27 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.fillStyle.parse.invalid.hsla-1
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+
+ctx.fillStyle = '#0f0';
+try { ctx.fillStyle = 'hsla(0%, 100%, 50%, 1)'; } catch (e) { } // this shouldn't throw, but it shouldn't matter here if it does
+ctx.fillRect(0, 0, 100, 50);
+_assertPixel(canvas, 50,25, 0,255,0,255);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.hsla-2.html b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.hsla-2.html
new file mode 100644
index 0000000000..de123411ec
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.hsla-2.html
@@ -0,0 +1,31 @@
+
+
+OffscreenCanvas test: 2d.fillStyle.parse.invalid.hsla-2
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.fillStyle.parse.invalid.hsla-2
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.hsla-2.worker.js b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.hsla-2.worker.js
new file mode 100644
index 0000000000..809c805352
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.hsla-2.worker.js
@@ -0,0 +1,27 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.fillStyle.parse.invalid.hsla-2
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+
+ctx.fillStyle = '#0f0';
+try { ctx.fillStyle = 'hsla(0, 0, 50%, 1)'; } catch (e) { } // this shouldn't throw, but it shouldn't matter here if it does
+ctx.fillRect(0, 0, 100, 50);
+_assertPixel(canvas, 50,25, 0,255,0,255);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.hsla-3.html b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.hsla-3.html
new file mode 100644
index 0000000000..beab07b862
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.hsla-3.html
@@ -0,0 +1,31 @@
+
+
+OffscreenCanvas test: 2d.fillStyle.parse.invalid.hsla-3
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.fillStyle.parse.invalid.hsla-3
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.hsla-3.worker.js b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.hsla-3.worker.js
new file mode 100644
index 0000000000..4d2b53bbeb
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.hsla-3.worker.js
@@ -0,0 +1,27 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.fillStyle.parse.invalid.hsla-3
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+
+ctx.fillStyle = '#0f0';
+try { ctx.fillStyle = 'hsla(0, 0, 50%, 1,)'; } catch (e) { } // this shouldn't throw, but it shouldn't matter here if it does
+ctx.fillRect(0, 0, 100, 50);
+_assertPixel(canvas, 50,25, 0,255,0,255);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.name-1.html b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.name-1.html
new file mode 100644
index 0000000000..4ac286e616
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.name-1.html
@@ -0,0 +1,31 @@
+
+
+OffscreenCanvas test: 2d.fillStyle.parse.invalid.name-1
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.fillStyle.parse.invalid.name-1
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.name-1.worker.js b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.name-1.worker.js
new file mode 100644
index 0000000000..ef588934c1
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.name-1.worker.js
@@ -0,0 +1,27 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.fillStyle.parse.invalid.name-1
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+
+ctx.fillStyle = '#0f0';
+try { ctx.fillStyle = 'darkbrown'; } catch (e) { } // this shouldn't throw, but it shouldn't matter here if it does
+ctx.fillRect(0, 0, 100, 50);
+_assertPixel(canvas, 50,25, 0,255,0,255);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.name-2.html b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.name-2.html
new file mode 100644
index 0000000000..6b54c1816b
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.name-2.html
@@ -0,0 +1,31 @@
+
+
+OffscreenCanvas test: 2d.fillStyle.parse.invalid.name-2
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.fillStyle.parse.invalid.name-2
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.name-2.worker.js b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.name-2.worker.js
new file mode 100644
index 0000000000..b66a07419c
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.name-2.worker.js
@@ -0,0 +1,27 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.fillStyle.parse.invalid.name-2
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+
+ctx.fillStyle = '#0f0';
+try { ctx.fillStyle = 'firebrick1'; } catch (e) { } // this shouldn't throw, but it shouldn't matter here if it does
+ctx.fillRect(0, 0, 100, 50);
+_assertPixel(canvas, 50,25, 0,255,0,255);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.name-3.html b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.name-3.html
new file mode 100644
index 0000000000..05cfaa906d
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.name-3.html
@@ -0,0 +1,31 @@
+
+
+OffscreenCanvas test: 2d.fillStyle.parse.invalid.name-3
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.fillStyle.parse.invalid.name-3
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.name-3.worker.js b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.name-3.worker.js
new file mode 100644
index 0000000000..da51a4ab2a
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.name-3.worker.js
@@ -0,0 +1,27 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.fillStyle.parse.invalid.name-3
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+
+ctx.fillStyle = '#0f0';
+try { ctx.fillStyle = 'red blue'; } catch (e) { } // this shouldn't throw, but it shouldn't matter here if it does
+ctx.fillRect(0, 0, 100, 50);
+_assertPixel(canvas, 50,25, 0,255,0,255);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.name-4.html b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.name-4.html
new file mode 100644
index 0000000000..47aab58ada
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.name-4.html
@@ -0,0 +1,31 @@
+
+
+OffscreenCanvas test: 2d.fillStyle.parse.invalid.name-4
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.fillStyle.parse.invalid.name-4
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.name-4.worker.js b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.name-4.worker.js
new file mode 100644
index 0000000000..c167c2b955
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.name-4.worker.js
@@ -0,0 +1,27 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.fillStyle.parse.invalid.name-4
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+
+ctx.fillStyle = '#0f0';
+try { ctx.fillStyle = '"red"'; } catch (e) { } // this shouldn't throw, but it shouldn't matter here if it does
+ctx.fillRect(0, 0, 100, 50);
+_assertPixel(canvas, 50,25, 0,255,0,255);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.name-5.html b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.name-5.html
new file mode 100644
index 0000000000..af19e193e0
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.name-5.html
@@ -0,0 +1,31 @@
+
+
+OffscreenCanvas test: 2d.fillStyle.parse.invalid.name-5
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.fillStyle.parse.invalid.name-5
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.name-5.worker.js b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.name-5.worker.js
new file mode 100644
index 0000000000..8fe3a9b13e
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.name-5.worker.js
@@ -0,0 +1,27 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.fillStyle.parse.invalid.name-5
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+
+ctx.fillStyle = '#0f0';
+try { ctx.fillStyle = '"red'; } catch (e) { } // this shouldn't throw, but it shouldn't matter here if it does
+ctx.fillRect(0, 0, 100, 50);
+_assertPixel(canvas, 50,25, 0,255,0,255);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.rgb-1.html b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.rgb-1.html
new file mode 100644
index 0000000000..300bb85ee2
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.rgb-1.html
@@ -0,0 +1,31 @@
+
+
+OffscreenCanvas test: 2d.fillStyle.parse.invalid.rgb-1
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.fillStyle.parse.invalid.rgb-1
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.rgb-1.worker.js b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.rgb-1.worker.js
new file mode 100644
index 0000000000..3c97d856c7
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.rgb-1.worker.js
@@ -0,0 +1,27 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.fillStyle.parse.invalid.rgb-1
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+
+ctx.fillStyle = '#0f0';
+try { ctx.fillStyle = 'rgb(255.0, 0, 0,)'; } catch (e) { } // this shouldn't throw, but it shouldn't matter here if it does
+ctx.fillRect(0, 0, 100, 50);
+_assertPixel(canvas, 50,25, 0,255,0,255);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.rgb-2.html b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.rgb-2.html
new file mode 100644
index 0000000000..8bc9c079dd
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.rgb-2.html
@@ -0,0 +1,31 @@
+
+
+OffscreenCanvas test: 2d.fillStyle.parse.invalid.rgb-2
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.fillStyle.parse.invalid.rgb-2
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.rgb-2.worker.js b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.rgb-2.worker.js
new file mode 100644
index 0000000000..7e4e27c914
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.rgb-2.worker.js
@@ -0,0 +1,27 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.fillStyle.parse.invalid.rgb-2
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+
+ctx.fillStyle = '#0f0';
+try { ctx.fillStyle = 'rgb(100%, 0, 0)'; } catch (e) { } // this shouldn't throw, but it shouldn't matter here if it does
+ctx.fillRect(0, 0, 100, 50);
+_assertPixel(canvas, 50,25, 0,255,0,255);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.rgb-3.html b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.rgb-3.html
new file mode 100644
index 0000000000..11e93a1c72
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.rgb-3.html
@@ -0,0 +1,31 @@
+
+
+OffscreenCanvas test: 2d.fillStyle.parse.invalid.rgb-3
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.fillStyle.parse.invalid.rgb-3
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.rgb-3.worker.js b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.rgb-3.worker.js
new file mode 100644
index 0000000000..59d89f7b51
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.rgb-3.worker.js
@@ -0,0 +1,27 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.fillStyle.parse.invalid.rgb-3
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+
+ctx.fillStyle = '#0f0';
+try { ctx.fillStyle = 'rgb(255, - 1, 0)'; } catch (e) { } // this shouldn't throw, but it shouldn't matter here if it does
+ctx.fillRect(0, 0, 100, 50);
+_assertPixel(canvas, 50,25, 0,255,0,255);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.rgba-1.html b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.rgba-1.html
new file mode 100644
index 0000000000..3a0b399117
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.rgba-1.html
@@ -0,0 +1,31 @@
+
+
+OffscreenCanvas test: 2d.fillStyle.parse.invalid.rgba-1
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.fillStyle.parse.invalid.rgba-1
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.rgba-1.worker.js b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.rgba-1.worker.js
new file mode 100644
index 0000000000..efd7640594
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.rgba-1.worker.js
@@ -0,0 +1,27 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.fillStyle.parse.invalid.rgba-1
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+
+ctx.fillStyle = '#0f0';
+try { ctx.fillStyle = 'rgba(100%, 0, 0, 1)'; } catch (e) { } // this shouldn't throw, but it shouldn't matter here if it does
+ctx.fillRect(0, 0, 100, 50);
+_assertPixel(canvas, 50,25, 0,255,0,255);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.rgba-2.html b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.rgba-2.html
new file mode 100644
index 0000000000..28a2180520
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.rgba-2.html
@@ -0,0 +1,31 @@
+
+
+OffscreenCanvas test: 2d.fillStyle.parse.invalid.rgba-2
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.fillStyle.parse.invalid.rgba-2
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.rgba-2.worker.js b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.rgba-2.worker.js
new file mode 100644
index 0000000000..dfdafb1a7e
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.rgba-2.worker.js
@@ -0,0 +1,27 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.fillStyle.parse.invalid.rgba-2
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+
+ctx.fillStyle = '#0f0';
+try { ctx.fillStyle = 'rgba(255, 0, 0, 1. 0)'; } catch (e) { } // this shouldn't throw, but it shouldn't matter here if it does
+ctx.fillRect(0, 0, 100, 50);
+_assertPixel(canvas, 50,25, 0,255,0,255);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.rgba-3.html b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.rgba-3.html
new file mode 100644
index 0000000000..d9ad0be5e5
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.rgba-3.html
@@ -0,0 +1,31 @@
+
+
+OffscreenCanvas test: 2d.fillStyle.parse.invalid.rgba-3
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.fillStyle.parse.invalid.rgba-3
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.rgba-3.worker.js b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.rgba-3.worker.js
new file mode 100644
index 0000000000..1dca0eb9b1
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.rgba-3.worker.js
@@ -0,0 +1,27 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.fillStyle.parse.invalid.rgba-3
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+
+ctx.fillStyle = '#0f0';
+try { ctx.fillStyle = 'rgba(255, 0, 0, 1.)'; } catch (e) { } // this shouldn't throw, but it shouldn't matter here if it does
+ctx.fillRect(0, 0, 100, 50);
+_assertPixel(canvas, 50,25, 0,255,0,255);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.rgba-4.html b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.rgba-4.html
new file mode 100644
index 0000000000..db71a88e70
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.rgba-4.html
@@ -0,0 +1,31 @@
+
+
+OffscreenCanvas test: 2d.fillStyle.parse.invalid.rgba-4
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.fillStyle.parse.invalid.rgba-4
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.rgba-4.worker.js b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.rgba-4.worker.js
new file mode 100644
index 0000000000..dff64ba907
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.rgba-4.worker.js
@@ -0,0 +1,27 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.fillStyle.parse.invalid.rgba-4
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+
+ctx.fillStyle = '#0f0';
+try { ctx.fillStyle = 'rgba(255, 0, 0, '; } catch (e) { } // this shouldn't throw, but it shouldn't matter here if it does
+ctx.fillRect(0, 0, 100, 50);
+_assertPixel(canvas, 50,25, 0,255,0,255);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.rgba-5.html b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.rgba-5.html
new file mode 100644
index 0000000000..00e7791bcb
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.rgba-5.html
@@ -0,0 +1,31 @@
+
+
+OffscreenCanvas test: 2d.fillStyle.parse.invalid.rgba-5
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.fillStyle.parse.invalid.rgba-5
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.rgba-5.worker.js b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.rgba-5.worker.js
new file mode 100644
index 0000000000..80a65dcbc2
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.invalid.rgba-5.worker.js
@@ -0,0 +1,27 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.fillStyle.parse.invalid.rgba-5
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+
+ctx.fillStyle = '#0f0';
+try { ctx.fillStyle = 'rgba(255, 0, 0, 1,)'; } catch (e) { } // this shouldn't throw, but it shouldn't matter here if it does
+ctx.fillRect(0, 0, 100, 50);
+_assertPixel(canvas, 50,25, 0,255,0,255);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.rgb-clamp-1.html b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.rgb-clamp-1.html
new file mode 100644
index 0000000000..ce03f7b840
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.rgb-clamp-1.html
@@ -0,0 +1,31 @@
+
+
+OffscreenCanvas test: 2d.fillStyle.parse.rgb-clamp-1
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.fillStyle.parse.rgb-clamp-1
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Assumes colors are clamped to [0,255].
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.rgb-clamp-1.worker.js b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.rgb-clamp-1.worker.js
new file mode 100644
index 0000000000..48cf6a72f5
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.rgb-clamp-1.worker.js
@@ -0,0 +1,27 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.fillStyle.parse.rgb-clamp-1
+// Description:
+// Note:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Assumes colors are clamped to [0,255].
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+
+ctx.fillStyle = '#f00';
+ctx.fillStyle = 'rgb(-1000, 1000, -1000)';
+ctx.fillRect(0, 0, 100, 50);
+_assertPixel(canvas, 50,25, 0,255,0,255);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.rgb-clamp-2.html b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.rgb-clamp-2.html
new file mode 100644
index 0000000000..e4f9260ec6
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.rgb-clamp-2.html
@@ -0,0 +1,31 @@
+
+
+OffscreenCanvas test: 2d.fillStyle.parse.rgb-clamp-2
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.fillStyle.parse.rgb-clamp-2
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Assumes colors are clamped to [0,255].
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.rgb-clamp-2.worker.js b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.rgb-clamp-2.worker.js
new file mode 100644
index 0000000000..70adec462a
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.rgb-clamp-2.worker.js
@@ -0,0 +1,27 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.fillStyle.parse.rgb-clamp-2
+// Description:
+// Note:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Assumes colors are clamped to [0,255].
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+
+ctx.fillStyle = '#f00';
+ctx.fillStyle = 'rgb(-200%, 200%, -200%)';
+ctx.fillRect(0, 0, 100, 50);
+_assertPixel(canvas, 50,25, 0,255,0,255);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.rgb-clamp-3.html b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.rgb-clamp-3.html
new file mode 100644
index 0000000000..73bbc00d1e
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.rgb-clamp-3.html
@@ -0,0 +1,31 @@
+
+
+OffscreenCanvas test: 2d.fillStyle.parse.rgb-clamp-3
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.fillStyle.parse.rgb-clamp-3
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Assumes colors are clamped to [0,255].
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.rgb-clamp-3.worker.js b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.rgb-clamp-3.worker.js
new file mode 100644
index 0000000000..883328b42d
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.rgb-clamp-3.worker.js
@@ -0,0 +1,27 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.fillStyle.parse.rgb-clamp-3
+// Description:
+// Note:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Assumes colors are clamped to [0,255].
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+
+ctx.fillStyle = '#f00';
+ctx.fillStyle = 'rgb(-2147483649, 4294967298, -18446744073709551619)';
+ctx.fillRect(0, 0, 100, 50);
+_assertPixel(canvas, 50,25, 0,255,0,255);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.rgb-clamp-4.html b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.rgb-clamp-4.html
new file mode 100644
index 0000000000..1bdb70d68c
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.rgb-clamp-4.html
@@ -0,0 +1,31 @@
+
+
+OffscreenCanvas test: 2d.fillStyle.parse.rgb-clamp-4
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.fillStyle.parse.rgb-clamp-4
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Assumes colors are clamped to [0,255].
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.rgb-clamp-4.worker.js b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.rgb-clamp-4.worker.js
new file mode 100644
index 0000000000..ca5543ac9b
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.rgb-clamp-4.worker.js
@@ -0,0 +1,27 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.fillStyle.parse.rgb-clamp-4
+// Description:
+// Note:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Assumes colors are clamped to [0,255].
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+
+ctx.fillStyle = '#f00';
+ctx.fillStyle = 'rgb(-1000000000000000000000000000000000000000, 1000000000000000000000000000000000000000, -1000000000000000000000000000000000000000)';
+ctx.fillRect(0, 0, 100, 50);
+_assertPixel(canvas, 50,25, 0,255,0,255);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.rgb-clamp-5.html b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.rgb-clamp-5.html
new file mode 100644
index 0000000000..880ad046e1
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.rgb-clamp-5.html
@@ -0,0 +1,31 @@
+
+
+OffscreenCanvas test: 2d.fillStyle.parse.rgb-clamp-5
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.fillStyle.parse.rgb-clamp-5
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Assumes colors are clamped to [0,255].
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.rgb-clamp-5.worker.js b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.rgb-clamp-5.worker.js
new file mode 100644
index 0000000000..41f8799f40
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.rgb-clamp-5.worker.js
@@ -0,0 +1,27 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.fillStyle.parse.rgb-clamp-5
+// Description:
+// Note:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Assumes colors are clamped to [0,255].
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+
+ctx.fillStyle = '#f00';
+ctx.fillStyle = 'rgb(-10000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, 10000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, -10000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000)';
+ctx.fillRect(0, 0, 100, 50);
+_assertPixel(canvas, 50,25, 0,255,0,255);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.rgb-eof.html b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.rgb-eof.html
new file mode 100644
index 0000000000..9a84105dbc
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.rgb-eof.html
@@ -0,0 +1,31 @@
+
+
+OffscreenCanvas test: 2d.fillStyle.parse.rgb-eof
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.fillStyle.parse.rgb-eof
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.rgb-eof.worker.js b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.rgb-eof.worker.js
new file mode 100644
index 0000000000..39589937d5
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.rgb-eof.worker.js
@@ -0,0 +1,27 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.fillStyle.parse.rgb-eof
+// Description:
+// Note:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+
+ctx.fillStyle = '#f00';
+ctx.fillStyle = 'rgb(0, 255, 0';
+ctx.fillRect(0, 0, 100, 50);
+_assertPixel(canvas, 50,25, 0,255,0,255);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.rgb-num.html b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.rgb-num.html
new file mode 100644
index 0000000000..6cda83e0a8
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.rgb-num.html
@@ -0,0 +1,31 @@
+
+
+OffscreenCanvas test: 2d.fillStyle.parse.rgb-num
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.fillStyle.parse.rgb-num
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.rgb-num.worker.js b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.rgb-num.worker.js
new file mode 100644
index 0000000000..229d6aec61
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.rgb-num.worker.js
@@ -0,0 +1,27 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.fillStyle.parse.rgb-num
+// Description:
+// Note:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+
+ctx.fillStyle = '#f00';
+ctx.fillStyle = 'rgb(0,255,0)';
+ctx.fillRect(0, 0, 100, 50);
+_assertPixel(canvas, 50,25, 0,255,0,255);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.rgb-percent.html b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.rgb-percent.html
new file mode 100644
index 0000000000..6f7125de0f
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.rgb-percent.html
@@ -0,0 +1,31 @@
+
+
+OffscreenCanvas test: 2d.fillStyle.parse.rgb-percent
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.fillStyle.parse.rgb-percent
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              CSS3 Color says "The integer value 255 corresponds to 100%". (In particular, it is not 254...)
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.rgb-percent.worker.js b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.rgb-percent.worker.js
new file mode 100644
index 0000000000..4ba5c987e5
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.rgb-percent.worker.js
@@ -0,0 +1,27 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.fillStyle.parse.rgb-percent
+// Description:
+// Note:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              CSS3 Color says "The integer value 255 corresponds to 100%". (In particular, it is not 254...)
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+
+ctx.fillStyle = '#f00';
+ctx.fillStyle = 'rgb(0% ,100% ,0%)';
+ctx.fillRect(0, 0, 100, 50);
+_assertPixel(canvas, 50,25, 0,255,0,255);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.rgba-clamp-1.html b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.rgba-clamp-1.html
new file mode 100644
index 0000000000..1cf20f7898
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.rgba-clamp-1.html
@@ -0,0 +1,31 @@
+
+
+OffscreenCanvas test: 2d.fillStyle.parse.rgba-clamp-1
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.fillStyle.parse.rgba-clamp-1
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.rgba-clamp-1.worker.js b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.rgba-clamp-1.worker.js
new file mode 100644
index 0000000000..9ba73e22eb
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.rgba-clamp-1.worker.js
@@ -0,0 +1,27 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.fillStyle.parse.rgba-clamp-1
+// Description:
+// Note:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+
+ctx.fillStyle = '#f00';
+ctx.fillStyle = 'rgba(0, 255, 0, -2)';
+ctx.fillRect(0, 0, 100, 50);
+_assertPixel(canvas, 50,25, 0,0,0,0);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.rgba-clamp-2.html b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.rgba-clamp-2.html
new file mode 100644
index 0000000000..c8b4844ae6
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.rgba-clamp-2.html
@@ -0,0 +1,31 @@
+
+
+OffscreenCanvas test: 2d.fillStyle.parse.rgba-clamp-2
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.fillStyle.parse.rgba-clamp-2
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.rgba-clamp-2.worker.js b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.rgba-clamp-2.worker.js
new file mode 100644
index 0000000000..fd1c53a733
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.rgba-clamp-2.worker.js
@@ -0,0 +1,27 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.fillStyle.parse.rgba-clamp-2
+// Description:
+// Note:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+
+ctx.fillStyle = '#f00';
+ctx.fillStyle = 'rgba(0, 255, 0, 2)';
+ctx.fillRect(0, 0, 100, 50);
+_assertPixel(canvas, 50,25, 0,255,0,255);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.rgba-eof.html b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.rgba-eof.html
new file mode 100644
index 0000000000..d3fd3df2e4
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.rgba-eof.html
@@ -0,0 +1,31 @@
+
+
+OffscreenCanvas test: 2d.fillStyle.parse.rgba-eof
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.fillStyle.parse.rgba-eof
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.rgba-eof.worker.js b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.rgba-eof.worker.js
new file mode 100644
index 0000000000..6e51f09b5f
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.rgba-eof.worker.js
@@ -0,0 +1,27 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.fillStyle.parse.rgba-eof
+// Description:
+// Note:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+
+ctx.fillStyle = '#f00';
+ctx.fillStyle = 'rgba(0, 255, 0, 1';
+ctx.fillRect(0, 0, 100, 50);
+_assertPixel(canvas, 50,25, 0,255,0,255);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.rgba-num-1.html b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.rgba-num-1.html
new file mode 100644
index 0000000000..1ce69821ae
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.rgba-num-1.html
@@ -0,0 +1,31 @@
+
+
+OffscreenCanvas test: 2d.fillStyle.parse.rgba-num-1
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.fillStyle.parse.rgba-num-1
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.rgba-num-1.worker.js b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.rgba-num-1.worker.js
new file mode 100644
index 0000000000..2805af6e05
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.rgba-num-1.worker.js
@@ -0,0 +1,27 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.fillStyle.parse.rgba-num-1
+// Description:
+// Note:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+
+ctx.fillStyle = '#f00';
+ctx.fillStyle = 'rgba(  0  ,  255  ,  0  ,  .499  )';
+ctx.fillRect(0, 0, 100, 50);
+_assertPixel(canvas, 50,25, 0,255,0,127);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.rgba-num-2.html b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.rgba-num-2.html
new file mode 100644
index 0000000000..979eff66b2
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.rgba-num-2.html
@@ -0,0 +1,31 @@
+
+
+OffscreenCanvas test: 2d.fillStyle.parse.rgba-num-2
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.fillStyle.parse.rgba-num-2
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.rgba-num-2.worker.js b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.rgba-num-2.worker.js
new file mode 100644
index 0000000000..2ed1549240
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.rgba-num-2.worker.js
@@ -0,0 +1,27 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.fillStyle.parse.rgba-num-2
+// Description:
+// Note:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+
+ctx.fillStyle = '#f00';
+ctx.fillStyle = 'rgba(  0  ,  255  ,  0  ,  0.499  )';
+ctx.fillRect(0, 0, 100, 50);
+_assertPixel(canvas, 50,25, 0,255,0,127);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.rgba-percent.html b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.rgba-percent.html
new file mode 100644
index 0000000000..2c737e21c1
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.rgba-percent.html
@@ -0,0 +1,31 @@
+
+
+OffscreenCanvas test: 2d.fillStyle.parse.rgba-percent
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.fillStyle.parse.rgba-percent
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.rgba-percent.worker.js b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.rgba-percent.worker.js
new file mode 100644
index 0000000000..5852ea3eb1
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.rgba-percent.worker.js
@@ -0,0 +1,27 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.fillStyle.parse.rgba-percent
+// Description:
+// Note:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+
+ctx.fillStyle = '#f00';
+ctx.fillStyle = 'rgba(0%,100%,0%,0.499)';
+ctx.fillRect(0, 0, 100, 50);
+_assertPixel(canvas, 50,25, 0,255,0,127);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.rgba-solid-1.html b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.rgba-solid-1.html
new file mode 100644
index 0000000000..701b5efc79
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.rgba-solid-1.html
@@ -0,0 +1,31 @@
+
+
+OffscreenCanvas test: 2d.fillStyle.parse.rgba-solid-1
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.fillStyle.parse.rgba-solid-1
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.rgba-solid-1.worker.js b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.rgba-solid-1.worker.js
new file mode 100644
index 0000000000..51e6d77421
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.rgba-solid-1.worker.js
@@ -0,0 +1,27 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.fillStyle.parse.rgba-solid-1
+// Description:
+// Note:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+
+ctx.fillStyle = '#f00';
+ctx.fillStyle = 'rgba(  0  ,  255  ,  0  ,  1  )';
+ctx.fillRect(0, 0, 100, 50);
+_assertPixel(canvas, 50,25, 0,255,0,255);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.rgba-solid-2.html b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.rgba-solid-2.html
new file mode 100644
index 0000000000..7280c10dd6
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.rgba-solid-2.html
@@ -0,0 +1,31 @@
+
+
+OffscreenCanvas test: 2d.fillStyle.parse.rgba-solid-2
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.fillStyle.parse.rgba-solid-2
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.rgba-solid-2.worker.js b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.rgba-solid-2.worker.js
new file mode 100644
index 0000000000..4dcbd72aef
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.rgba-solid-2.worker.js
@@ -0,0 +1,27 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.fillStyle.parse.rgba-solid-2
+// Description:
+// Note:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+
+ctx.fillStyle = '#f00';
+ctx.fillStyle = 'rgba(  0  ,  255  ,  0  ,  1.0  )';
+ctx.fillRect(0, 0, 100, 50);
+_assertPixel(canvas, 50,25, 0,255,0,255);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.rgba-solid-3.html b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.rgba-solid-3.html
new file mode 100644
index 0000000000..dfbb443973
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.rgba-solid-3.html
@@ -0,0 +1,31 @@
+
+
+OffscreenCanvas test: 2d.fillStyle.parse.rgba-solid-3
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.fillStyle.parse.rgba-solid-3
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.rgba-solid-3.worker.js b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.rgba-solid-3.worker.js
new file mode 100644
index 0000000000..060fad9bb8
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.rgba-solid-3.worker.js
@@ -0,0 +1,27 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.fillStyle.parse.rgba-solid-3
+// Description:
+// Note:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+
+ctx.fillStyle = '#f00';
+ctx.fillStyle = 'rgba(  0  ,  255  ,  0  , +1  )';
+ctx.fillRect(0, 0, 100, 50);
+_assertPixel(canvas, 50,25, 0,255,0,255);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.rgba-solid-4.html b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.rgba-solid-4.html
new file mode 100644
index 0000000000..131396c8d0
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.rgba-solid-4.html
@@ -0,0 +1,31 @@
+
+
+OffscreenCanvas test: 2d.fillStyle.parse.rgba-solid-4
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.fillStyle.parse.rgba-solid-4
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.rgba-solid-4.worker.js b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.rgba-solid-4.worker.js
new file mode 100644
index 0000000000..43a8cf8251
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.rgba-solid-4.worker.js
@@ -0,0 +1,27 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.fillStyle.parse.rgba-solid-4
+// Description:
+// Note:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+
+ctx.fillStyle = '#f00';
+ctx.fillStyle = 'rgba( -0  ,  255  , +0  ,  1  )';
+ctx.fillRect(0, 0, 100, 50);
+_assertPixel(canvas, 50,25, 0,255,0,255);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.svg-1.html b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.svg-1.html
new file mode 100644
index 0000000000..ffcc525b48
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.svg-1.html
@@ -0,0 +1,31 @@
+
+
+OffscreenCanvas test: 2d.fillStyle.parse.svg-1
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.fillStyle.parse.svg-1
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.svg-1.worker.js b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.svg-1.worker.js
new file mode 100644
index 0000000000..86b4f8175d
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.svg-1.worker.js
@@ -0,0 +1,27 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.fillStyle.parse.svg-1
+// Description:
+// Note:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+
+ctx.fillStyle = '#f00';
+ctx.fillStyle = 'gray';
+ctx.fillRect(0, 0, 100, 50);
+_assertPixel(canvas, 50,25, 128,128,128,255);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.svg-2.html b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.svg-2.html
new file mode 100644
index 0000000000..eafecd0e6d
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.svg-2.html
@@ -0,0 +1,31 @@
+
+
+OffscreenCanvas test: 2d.fillStyle.parse.svg-2
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.fillStyle.parse.svg-2
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.svg-2.worker.js b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.svg-2.worker.js
new file mode 100644
index 0000000000..3aa530508e
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.svg-2.worker.js
@@ -0,0 +1,27 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.fillStyle.parse.svg-2
+// Description:
+// Note:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+
+ctx.fillStyle = '#f00';
+ctx.fillStyle = 'grey';
+ctx.fillRect(0, 0, 100, 50);
+_assertPixel(canvas, 50,25, 128,128,128,255);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.system.html b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.system.html
new file mode 100644
index 0000000000..65a84a78ec
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.system.html
@@ -0,0 +1,30 @@
+
+
+OffscreenCanvas test: 2d.fillStyle.parse.system
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.fillStyle.parse.system
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.system.worker.js b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.system.worker.js
new file mode 100644
index 0000000000..8e21145823
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.system.worker.js
@@ -0,0 +1,26 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.fillStyle.parse.system
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+
+ctx.fillStyle = '#f00';
+ctx.fillStyle = 'ThreeDDarkShadow';
+assert_regexp_match(ctx.fillStyle, /^#(?!(FF0000|ff0000|f00)$)/); // test that it's not red
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.transparent-1.html b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.transparent-1.html
new file mode 100644
index 0000000000..98da0c29cd
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.transparent-1.html
@@ -0,0 +1,31 @@
+
+
+OffscreenCanvas test: 2d.fillStyle.parse.transparent-1
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.fillStyle.parse.transparent-1
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.transparent-1.worker.js b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.transparent-1.worker.js
new file mode 100644
index 0000000000..a934b66c8c
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.transparent-1.worker.js
@@ -0,0 +1,27 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.fillStyle.parse.transparent-1
+// Description:
+// Note:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+
+ctx.fillStyle = '#f00';
+ctx.fillStyle = 'transparent';
+ctx.fillRect(0, 0, 100, 50);
+_assertPixel(canvas, 50,25, 0,0,0,0);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.transparent-2.html b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.transparent-2.html
new file mode 100644
index 0000000000..cfebe8fc1d
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.transparent-2.html
@@ -0,0 +1,31 @@
+
+
+OffscreenCanvas test: 2d.fillStyle.parse.transparent-2
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.fillStyle.parse.transparent-2
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.transparent-2.worker.js b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.transparent-2.worker.js
new file mode 100644
index 0000000000..e577bf55dd
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.parse.transparent-2.worker.js
@@ -0,0 +1,27 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.fillStyle.parse.transparent-2
+// Description:
+// Note:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+
+ctx.fillStyle = '#f00';
+ctx.fillStyle = 'TrAnSpArEnT';
+ctx.fillRect(0, 0, 100, 50);
+_assertPixel(canvas, 50,25, 0,0,0,0);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.toStringFunctionCallback.html b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.toStringFunctionCallback.html
new file mode 100644
index 0000000000..70eb6b1a26
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.toStringFunctionCallback.html
@@ -0,0 +1,40 @@
+
+
+OffscreenCanvas test: 2d.fillStyle.toStringFunctionCallback
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.fillStyle.toStringFunctionCallback
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Passing a function in to ctx.fillStyle or ctx.strokeStyle with a toString callback works as specified
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.toStringFunctionCallback.worker.js b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.toStringFunctionCallback.worker.js
new file mode 100644
index 0000000000..68ae0a5da2
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.fillStyle.toStringFunctionCallback.worker.js
@@ -0,0 +1,36 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.fillStyle.toStringFunctionCallback
+// Description:Passing a function in to ctx.fillStyle or ctx.strokeStyle with a toString callback works as specified
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("Passing a function in to ctx.fillStyle or ctx.strokeStyle with a toString callback works as specified");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+ctx.fillStyle = { toString: function() { return "#008000"; } };
+_assertSame(ctx.fillStyle, "#008000", "ctx.fillStyle", "\"#008000\"");
+ctx.fillStyle = {};
+_assertSame(ctx.fillStyle, "#008000", "ctx.fillStyle", "\"#008000\"");
+ctx.fillStyle = 800000;
+_assertSame(ctx.fillStyle, "#008000", "ctx.fillStyle", "\"#008000\"");
+assert_throws_js(TypeError, function() { ctx.fillStyle = { toString: function() { throw new TypeError; } }; });
+ctx.strokeStyle = { toString: function() { return "#008000"; } };
+_assertSame(ctx.strokeStyle, "#008000", "ctx.strokeStyle", "\"#008000\"");
+ctx.strokeStyle = {};
+_assertSame(ctx.strokeStyle, "#008000", "ctx.strokeStyle", "\"#008000\"");
+ctx.strokeStyle = 800000;
+_assertSame(ctx.strokeStyle, "#008000", "ctx.strokeStyle", "\"#008000\"");
+assert_throws_js(TypeError, function() { ctx.strokeStyle = { toString: function() { throw new TypeError; } }; });
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.conic.invalid.inputs.html b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.conic.invalid.inputs.html
new file mode 100644
index 0000000000..3d1f21ec05
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.conic.invalid.inputs.html
@@ -0,0 +1,45 @@
+
+
+OffscreenCanvas test: 2d.gradient.conic.invalid.inputs
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.gradient.conic.invalid.inputs
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Conic gradient function with invalid inputs
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.conic.invalid.inputs.worker.js b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.conic.invalid.inputs.worker.js
new file mode 100644
index 0000000000..b6bd62cbb7
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.conic.invalid.inputs.worker.js
@@ -0,0 +1,41 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.gradient.conic.invalid.inputs
+// Description:Conic gradient function with invalid inputs
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("Conic gradient function with invalid inputs");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+assert_throws_js(TypeError, function() { ctx.createConicGradient(Infinity, 0, 1); });
+assert_throws_js(TypeError, function() { ctx.createConicGradient(-Infinity, 0, 1); });
+assert_throws_js(TypeError, function() { ctx.createConicGradient(NaN, 0, 1); });
+assert_throws_js(TypeError, function() { ctx.createConicGradient(0, Infinity, 1); });
+assert_throws_js(TypeError, function() { ctx.createConicGradient(0, -Infinity, 1); });
+assert_throws_js(TypeError, function() { ctx.createConicGradient(0, NaN, 1); });
+assert_throws_js(TypeError, function() { ctx.createConicGradient(0, 0, Infinity); });
+assert_throws_js(TypeError, function() { ctx.createConicGradient(0, 0, -Infinity); });
+assert_throws_js(TypeError, function() { ctx.createConicGradient(0, 0, NaN); });
+assert_throws_js(TypeError, function() { ctx.createConicGradient(Infinity, Infinity, 1); });
+assert_throws_js(TypeError, function() { ctx.createConicGradient(Infinity, Infinity, Infinity); });
+assert_throws_js(TypeError, function() { ctx.createConicGradient(Infinity, 0, Infinity); });
+assert_throws_js(TypeError, function() { ctx.createConicGradient(0, Infinity, Infinity); });
+
+const g = ctx.createConicGradient(0, 0, 25);
+assert_throws_js(TypeError, function() { g.addColorStop(-Infinity, '#f00'); });
+assert_throws_js(TypeError, function() { g.addColorStop(NaN, '#f00'); });
+assert_throws_dom("SYNTAX_ERR", function() { g.addColorStop(0, -Infinity); });
+assert_throws_dom("SYNTAX_ERR", function() { g.addColorStop(0, NaN); });
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.conic.negative.rotation.html b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.conic.negative.rotation.html
new file mode 100644
index 0000000000..dde54400e2
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.conic.negative.rotation.html
@@ -0,0 +1,36 @@
+
+
+OffscreenCanvas test: 2d.gradient.conic.negative.rotation
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.gradient.conic.negative.rotation
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Conic gradient with negative rotation
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.conic.negative.rotation.worker.js b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.conic.negative.rotation.worker.js
new file mode 100644
index 0000000000..68589cfab5
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.conic.negative.rotation.worker.js
@@ -0,0 +1,32 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.gradient.conic.negative.rotation
+// Description:Conic gradient with negative rotation
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("Conic gradient with negative rotation");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+const g = ctx.createConicGradient(-Math.PI/2, 50, 25);
+// It's red in the upper right region and green on the lower left region
+g.addColorStop(0, "#f00");
+g.addColorStop(0.25, "#0f0");
+g.addColorStop(0.50, "#0f0");
+g.addColorStop(0.75, "#f00");
+ctx.fillStyle = g;
+ctx.fillRect(0, 0, 100, 50);
+_assertPixelApprox(canvas, 25,15, 255,0,0,255, 3);
+_assertPixelApprox(canvas, 75,40, 0,255,0,255, 3);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.conic.positive.rotation.html b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.conic.positive.rotation.html
new file mode 100644
index 0000000000..42d5a87af4
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.conic.positive.rotation.html
@@ -0,0 +1,36 @@
+
+
+OffscreenCanvas test: 2d.gradient.conic.positive.rotation
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.gradient.conic.positive.rotation
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Conic gradient with positive rotation
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.conic.positive.rotation.worker.js b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.conic.positive.rotation.worker.js
new file mode 100644
index 0000000000..cece603ddb
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.conic.positive.rotation.worker.js
@@ -0,0 +1,32 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.gradient.conic.positive.rotation
+// Description:Conic gradient with positive rotation
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("Conic gradient with positive rotation");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+const g = ctx.createConicGradient(3*Math.PI/2, 50, 25);
+// It's red in the upper right region and green on the lower left region
+g.addColorStop(0, "#f00");
+g.addColorStop(0.25, "#0f0");
+g.addColorStop(0.50, "#0f0");
+g.addColorStop(0.75, "#f00");
+ctx.fillStyle = g;
+ctx.fillRect(0, 0, 100, 50);
+_assertPixelApprox(canvas, 25,15, 255,0,0,255, 3);
+_assertPixelApprox(canvas, 75,40, 0,255,0,255, 3);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.empty.html b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.empty.html
new file mode 100644
index 0000000000..93229d93f5
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.empty.html
@@ -0,0 +1,32 @@
+
+
+OffscreenCanvas test: 2d.gradient.empty
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.gradient.empty
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.empty.worker.js b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.empty.worker.js
new file mode 100644
index 0000000000..207a1b0cab
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.empty.worker.js
@@ -0,0 +1,28 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.gradient.empty
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+ctx.fillStyle = '#0f0';
+ctx.fillRect(0, 0, 100, 50);
+var g = ctx.createLinearGradient(0, 0, 0, 50);
+ctx.fillStyle = g;
+ctx.fillRect(0, 0, 100, 50);
+_assertPixelApprox(canvas, 50,25, 0,255,0,255, 2);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.interpolate.alpha.html b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.interpolate.alpha.html
new file mode 100644
index 0000000000..52c11fcbfd
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.interpolate.alpha.html
@@ -0,0 +1,36 @@
+
+
+OffscreenCanvas test: 2d.gradient.interpolate.alpha
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.gradient.interpolate.alpha
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.interpolate.alpha.worker.js b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.interpolate.alpha.worker.js
new file mode 100644
index 0000000000..d9f08a9bed
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.interpolate.alpha.worker.js
@@ -0,0 +1,32 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.gradient.interpolate.alpha
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+ctx.fillStyle = '#ff0';
+ctx.fillRect(0, 0, 100, 50);
+var g = ctx.createLinearGradient(0, 0, 100, 0);
+g.addColorStop(0, 'rgba(0,0,255, 0)');
+g.addColorStop(1, 'rgba(0,0,255, 1)');
+ctx.fillStyle = g;
+ctx.fillRect(0, 0, 100, 50);
+_assertPixelApprox(canvas, 25,25, 191,191,63,255, 3);
+_assertPixelApprox(canvas, 50,25, 127,127,127,255, 3);
+_assertPixelApprox(canvas, 75,25, 63,63,191,255, 3);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.interpolate.color.html b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.interpolate.color.html
new file mode 100644
index 0000000000..8f32781760
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.interpolate.color.html
@@ -0,0 +1,34 @@
+
+
+OffscreenCanvas test: 2d.gradient.interpolate.color
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.gradient.interpolate.color
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.interpolate.color.worker.js b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.interpolate.color.worker.js
new file mode 100644
index 0000000000..fcf1f84f37
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.interpolate.color.worker.js
@@ -0,0 +1,30 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.gradient.interpolate.color
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+var g = ctx.createLinearGradient(0, 0, 100, 0);
+g.addColorStop(0, '#ff0');
+g.addColorStop(1, '#00f');
+ctx.fillStyle = g;
+ctx.fillRect(0, 0, 100, 50);
+_assertPixelApprox(canvas, 25,25, 191,191,63,255, 3);
+_assertPixelApprox(canvas, 50,25, 127,127,127,255, 3);
+_assertPixelApprox(canvas, 75,25, 63,63,191,255, 3);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.interpolate.coloralpha.html b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.interpolate.coloralpha.html
new file mode 100644
index 0000000000..0e7d3b5577
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.interpolate.coloralpha.html
@@ -0,0 +1,34 @@
+
+
+OffscreenCanvas test: 2d.gradient.interpolate.coloralpha
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.gradient.interpolate.coloralpha
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.interpolate.coloralpha.worker.js b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.interpolate.coloralpha.worker.js
new file mode 100644
index 0000000000..cc1cc9f219
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.interpolate.coloralpha.worker.js
@@ -0,0 +1,30 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.gradient.interpolate.coloralpha
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+var g = ctx.createLinearGradient(0, 0, 100, 0);
+g.addColorStop(0, 'rgba(255,255,0, 0)');
+g.addColorStop(1, 'rgba(0,0,255, 1)');
+ctx.fillStyle = g;
+ctx.fillRect(0, 0, 100, 50);
+_assertPixelApprox(canvas, 25,25, 190,190,65,65, 3);
+_assertPixelApprox(canvas, 50,25, 126,126,128,128, 3);
+_assertPixelApprox(canvas, 75,25, 62,62,192,192, 3);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.interpolate.multiple.html b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.interpolate.multiple.html
new file mode 100644
index 0000000000..724ae5c093
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.interpolate.multiple.html
@@ -0,0 +1,36 @@
+
+
+OffscreenCanvas test: 2d.gradient.interpolate.multiple
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.gradient.interpolate.multiple
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.interpolate.multiple.worker.js b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.interpolate.multiple.worker.js
new file mode 100644
index 0000000000..ff3687c1a9
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.interpolate.multiple.worker.js
@@ -0,0 +1,32 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.gradient.interpolate.multiple
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+canvas.width = 200;
+var g = ctx.createLinearGradient(0, 0, 200, 0);
+g.addColorStop(0, '#ff0');
+g.addColorStop(0.5, '#0ff');
+g.addColorStop(1, '#f0f');
+ctx.fillStyle = g;
+ctx.fillRect(0, 0, 200, 50);
+_assertPixelApprox(canvas, 50,25, 127,255,127,255, 3);
+_assertPixelApprox(canvas, 100,25, 0,255,255,255, 3);
+_assertPixelApprox(canvas, 150,25, 127,127,255,255, 3);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.interpolate.outside.html b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.interpolate.outside.html
new file mode 100644
index 0000000000..0ef97af879
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.interpolate.outside.html
@@ -0,0 +1,36 @@
+
+
+OffscreenCanvas test: 2d.gradient.interpolate.outside
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.gradient.interpolate.outside
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.interpolate.outside.worker.js b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.interpolate.outside.worker.js
new file mode 100644
index 0000000000..60d10a59d8
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.interpolate.outside.worker.js
@@ -0,0 +1,32 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.gradient.interpolate.outside
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+ctx.fillStyle = '#f00';
+ctx.fillRect(0, 0, 100, 50);
+var g = ctx.createLinearGradient(25, 0, 75, 0);
+g.addColorStop(0.4, '#0f0');
+g.addColorStop(0.6, '#0f0');
+ctx.fillStyle = g;
+ctx.fillRect(0, 0, 100, 50);
+_assertPixelApprox(canvas, 20,25, 0,255,0,255, 2);
+_assertPixelApprox(canvas, 50,25, 0,255,0,255, 2);
+_assertPixelApprox(canvas, 80,25, 0,255,0,255, 2);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.interpolate.overlap.html b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.interpolate.overlap.html
new file mode 100644
index 0000000000..77eb328ecf
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.interpolate.overlap.html
@@ -0,0 +1,52 @@
+
+
+OffscreenCanvas test: 2d.gradient.interpolate.overlap
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.gradient.interpolate.overlap
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.interpolate.overlap.worker.js b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.interpolate.overlap.worker.js
new file mode 100644
index 0000000000..e11c85f8d8
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.interpolate.overlap.worker.js
@@ -0,0 +1,48 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.gradient.interpolate.overlap
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+canvas.width = 200;
+var g = ctx.createLinearGradient(0, 0, 200, 0);
+g.addColorStop(0, '#f00');
+g.addColorStop(0, '#ff0');
+g.addColorStop(0.25, '#00f');
+g.addColorStop(0.25, '#0f0');
+g.addColorStop(0.25, '#0f0');
+g.addColorStop(0.25, '#0f0');
+g.addColorStop(0.25, '#ff0');
+g.addColorStop(0.5, '#00f');
+g.addColorStop(0.5, '#0f0');
+g.addColorStop(0.75, '#00f');
+g.addColorStop(0.75, '#f00');
+g.addColorStop(0.75, '#ff0');
+g.addColorStop(0.5, '#0f0');
+g.addColorStop(0.5, '#0f0');
+g.addColorStop(0.5, '#ff0');
+g.addColorStop(1, '#00f');
+ctx.fillStyle = g;
+ctx.fillRect(0, 0, 200, 50);
+_assertPixelApprox(canvas, 49,25, 0,0,255,255, 16);
+_assertPixelApprox(canvas, 51,25, 255,255,0,255, 16);
+_assertPixelApprox(canvas, 99,25, 0,0,255,255, 16);
+_assertPixelApprox(canvas, 101,25, 255,255,0,255, 16);
+_assertPixelApprox(canvas, 149,25, 0,0,255,255, 16);
+_assertPixelApprox(canvas, 151,25, 255,255,0,255, 16);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.interpolate.overlap2.html b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.interpolate.overlap2.html
new file mode 100644
index 0000000000..662913b13f
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.interpolate.overlap2.html
@@ -0,0 +1,42 @@
+
+
+OffscreenCanvas test: 2d.gradient.interpolate.overlap2
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.gradient.interpolate.overlap2
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.interpolate.overlap2.worker.js b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.interpolate.overlap2.worker.js
new file mode 100644
index 0000000000..a6329af99a
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.interpolate.overlap2.worker.js
@@ -0,0 +1,38 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.gradient.interpolate.overlap2
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+var g = ctx.createLinearGradient(0, 0, 100, 0);
+var ps = [ 0, 1/10, 1/4, 1/3, 1/2, 3/4, 1 ];
+for (var p = 0; p < ps.length; ++p)
+{
+        g.addColorStop(ps[p], '#0f0');
+        for (var i = 0; i < 15; ++i)
+                g.addColorStop(ps[p], '#f00');
+        g.addColorStop(ps[p], '#0f0');
+}
+ctx.fillStyle = g;
+ctx.fillRect(0, 0, 100, 50);
+_assertPixel(canvas, 1,25, 0,255,0,255);
+_assertPixel(canvas, 30,25, 0,255,0,255);
+_assertPixel(canvas, 40,25, 0,255,0,255);
+_assertPixel(canvas, 60,25, 0,255,0,255);
+_assertPixel(canvas, 80,25, 0,255,0,255);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.interpolate.solid.html b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.interpolate.solid.html
new file mode 100644
index 0000000000..aa488d9412
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.interpolate.solid.html
@@ -0,0 +1,32 @@
+
+
+OffscreenCanvas test: 2d.gradient.interpolate.solid
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.gradient.interpolate.solid
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.interpolate.solid.worker.js b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.interpolate.solid.worker.js
new file mode 100644
index 0000000000..8cc4a88d98
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.interpolate.solid.worker.js
@@ -0,0 +1,28 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.gradient.interpolate.solid
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+var g = ctx.createLinearGradient(0, 0, 100, 0);
+g.addColorStop(0, '#0f0');
+g.addColorStop(1, '#0f0');
+ctx.fillStyle = g;
+ctx.fillRect(0, 0, 100, 50);
+_assertPixel(canvas, 50,25, 0,255,0,255);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.interpolate.vertical.html b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.interpolate.vertical.html
new file mode 100644
index 0000000000..15c4c7c39e
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.interpolate.vertical.html
@@ -0,0 +1,34 @@
+
+
+OffscreenCanvas test: 2d.gradient.interpolate.vertical
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.gradient.interpolate.vertical
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.interpolate.vertical.worker.js b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.interpolate.vertical.worker.js
new file mode 100644
index 0000000000..a25692cf42
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.interpolate.vertical.worker.js
@@ -0,0 +1,30 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.gradient.interpolate.vertical
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+var g = ctx.createLinearGradient(0, 0, 0, 50);
+g.addColorStop(0, '#ff0');
+g.addColorStop(1, '#00f');
+ctx.fillStyle = g;
+ctx.fillRect(0, 0, 100, 50);
+_assertPixelApprox(canvas, 50,12, 191,191,63,255, 10);
+_assertPixelApprox(canvas, 50,25, 127,127,127,255, 5);
+_assertPixelApprox(canvas, 50,37, 63,63,191,255, 10);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.interpolate.zerosize.fill.html b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.interpolate.zerosize.fill.html
new file mode 100644
index 0000000000..b679d5b83d
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.interpolate.zerosize.fill.html
@@ -0,0 +1,35 @@
+
+
+OffscreenCanvas test: 2d.gradient.interpolate.zerosize.fill
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.gradient.interpolate.zerosize.fill
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.interpolate.zerosize.fill.worker.js b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.interpolate.zerosize.fill.worker.js
new file mode 100644
index 0000000000..71df9674ce
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.interpolate.zerosize.fill.worker.js
@@ -0,0 +1,31 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.gradient.interpolate.zerosize.fill
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+ctx.fillStyle = '#0f0';
+ctx.fillRect(0, 0, 100, 50);
+var g = ctx.createLinearGradient(50, 25, 50, 25); // zero-length line (undefined direction)
+g.addColorStop(0, '#f00');
+g.addColorStop(1, '#f00');
+ctx.fillStyle = g;
+ctx.rect(0, 0, 100, 50);
+ctx.fill();
+_assertPixel(canvas, 40,20, 0,255,0,255);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.interpolate.zerosize.fillRect.html b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.interpolate.zerosize.fillRect.html
new file mode 100644
index 0000000000..9576f2a99e
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.interpolate.zerosize.fillRect.html
@@ -0,0 +1,34 @@
+
+
+OffscreenCanvas test: 2d.gradient.interpolate.zerosize.fillRect
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.gradient.interpolate.zerosize.fillRect
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.interpolate.zerosize.fillRect.worker.js b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.interpolate.zerosize.fillRect.worker.js
new file mode 100644
index 0000000000..b6dfbf081c
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.interpolate.zerosize.fillRect.worker.js
@@ -0,0 +1,30 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.gradient.interpolate.zerosize.fillRect
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+ctx.fillStyle = '#0f0';
+ctx.fillRect(0, 0, 100, 50);
+var g = ctx.createLinearGradient(50, 25, 50, 25); // zero-length line (undefined direction)
+g.addColorStop(0, '#f00');
+g.addColorStop(1, '#f00');
+ctx.fillStyle = g;
+ctx.fillRect(0, 0, 100, 50);
+_assertPixel(canvas, 40,20, 0,255,0,255);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.interpolate.zerosize.stroke.html b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.interpolate.zerosize.stroke.html
new file mode 100644
index 0000000000..81a5e4e35d
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.interpolate.zerosize.stroke.html
@@ -0,0 +1,43 @@
+
+
+OffscreenCanvas test: 2d.gradient.interpolate.zerosize.stroke
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.gradient.interpolate.zerosize.stroke
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.interpolate.zerosize.stroke.worker.js b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.interpolate.zerosize.stroke.worker.js
new file mode 100644
index 0000000000..c8744645a0
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.interpolate.zerosize.stroke.worker.js
@@ -0,0 +1,39 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.gradient.interpolate.zerosize.stroke
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+ctx.fillStyle = '#0f0';
+ctx.fillRect(0, 0, 100, 50);
+var g = ctx.createLinearGradient(50, 25, 50, 25); // zero-length line (undefined direction)
+g.addColorStop(0, '#f00');
+g.addColorStop(1, '#f00');
+ctx.strokeStyle = g;
+ctx.rect(20, 20, 60, 10);
+ctx.stroke();
+_assertPixel(canvas, 19,19, 0,255,0,255);
+_assertPixel(canvas, 20,19, 0,255,0,255);
+_assertPixel(canvas, 21,19, 0,255,0,255);
+_assertPixel(canvas, 19,20, 0,255,0,255);
+_assertPixel(canvas, 20,20, 0,255,0,255);
+_assertPixel(canvas, 21,20, 0,255,0,255);
+_assertPixel(canvas, 19,21, 0,255,0,255);
+_assertPixel(canvas, 20,21, 0,255,0,255);
+_assertPixel(canvas, 21,21, 0,255,0,255);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.interpolate.zerosize.strokeRect.html b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.interpolate.zerosize.strokeRect.html
new file mode 100644
index 0000000000..91cedc7069
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.interpolate.zerosize.strokeRect.html
@@ -0,0 +1,42 @@
+
+
+OffscreenCanvas test: 2d.gradient.interpolate.zerosize.strokeRect
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.gradient.interpolate.zerosize.strokeRect
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.interpolate.zerosize.strokeRect.worker.js b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.interpolate.zerosize.strokeRect.worker.js
new file mode 100644
index 0000000000..0949fc8a19
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.interpolate.zerosize.strokeRect.worker.js
@@ -0,0 +1,38 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.gradient.interpolate.zerosize.strokeRect
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+ctx.fillStyle = '#0f0';
+ctx.fillRect(0, 0, 100, 50);
+var g = ctx.createLinearGradient(50, 25, 50, 25); // zero-length line (undefined direction)
+g.addColorStop(0, '#f00');
+g.addColorStop(1, '#f00');
+ctx.strokeStyle = g;
+ctx.strokeRect(20, 20, 60, 10);
+_assertPixel(canvas, 19,19, 0,255,0,255);
+_assertPixel(canvas, 20,19, 0,255,0,255);
+_assertPixel(canvas, 21,19, 0,255,0,255);
+_assertPixel(canvas, 19,20, 0,255,0,255);
+_assertPixel(canvas, 20,20, 0,255,0,255);
+_assertPixel(canvas, 21,20, 0,255,0,255);
+_assertPixel(canvas, 19,21, 0,255,0,255);
+_assertPixel(canvas, 20,21, 0,255,0,255);
+_assertPixel(canvas, 21,21, 0,255,0,255);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.linear.nonfinite.html b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.linear.nonfinite.html
new file mode 100644
index 0000000000..f3c4209be7
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.linear.nonfinite.html
@@ -0,0 +1,49 @@
+
+
+OffscreenCanvas test: 2d.gradient.linear.nonfinite
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.gradient.linear.nonfinite
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              createLinearGradient() throws TypeError if arguments are not finite
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.linear.nonfinite.worker.js b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.linear.nonfinite.worker.js
new file mode 100644
index 0000000000..9fefcc3215
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.linear.nonfinite.worker.js
@@ -0,0 +1,45 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.gradient.linear.nonfinite
+// Description:createLinearGradient() throws TypeError if arguments are not finite
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("createLinearGradient() throws TypeError if arguments are not finite");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+assert_throws_js(TypeError, function() { ctx.createLinearGradient(Infinity, 0, 1, 0); });
+assert_throws_js(TypeError, function() { ctx.createLinearGradient(-Infinity, 0, 1, 0); });
+assert_throws_js(TypeError, function() { ctx.createLinearGradient(NaN, 0, 1, 0); });
+assert_throws_js(TypeError, function() { ctx.createLinearGradient(0, Infinity, 1, 0); });
+assert_throws_js(TypeError, function() { ctx.createLinearGradient(0, -Infinity, 1, 0); });
+assert_throws_js(TypeError, function() { ctx.createLinearGradient(0, NaN, 1, 0); });
+assert_throws_js(TypeError, function() { ctx.createLinearGradient(0, 0, Infinity, 0); });
+assert_throws_js(TypeError, function() { ctx.createLinearGradient(0, 0, -Infinity, 0); });
+assert_throws_js(TypeError, function() { ctx.createLinearGradient(0, 0, NaN, 0); });
+assert_throws_js(TypeError, function() { ctx.createLinearGradient(0, 0, 1, Infinity); });
+assert_throws_js(TypeError, function() { ctx.createLinearGradient(0, 0, 1, -Infinity); });
+assert_throws_js(TypeError, function() { ctx.createLinearGradient(0, 0, 1, NaN); });
+assert_throws_js(TypeError, function() { ctx.createLinearGradient(Infinity, Infinity, 1, 0); });
+assert_throws_js(TypeError, function() { ctx.createLinearGradient(Infinity, Infinity, Infinity, 0); });
+assert_throws_js(TypeError, function() { ctx.createLinearGradient(Infinity, Infinity, Infinity, Infinity); });
+assert_throws_js(TypeError, function() { ctx.createLinearGradient(Infinity, Infinity, 1, Infinity); });
+assert_throws_js(TypeError, function() { ctx.createLinearGradient(Infinity, 0, Infinity, 0); });
+assert_throws_js(TypeError, function() { ctx.createLinearGradient(Infinity, 0, Infinity, Infinity); });
+assert_throws_js(TypeError, function() { ctx.createLinearGradient(Infinity, 0, 1, Infinity); });
+assert_throws_js(TypeError, function() { ctx.createLinearGradient(0, Infinity, Infinity, 0); });
+assert_throws_js(TypeError, function() { ctx.createLinearGradient(0, Infinity, Infinity, Infinity); });
+assert_throws_js(TypeError, function() { ctx.createLinearGradient(0, Infinity, 1, Infinity); });
+assert_throws_js(TypeError, function() { ctx.createLinearGradient(0, 0, Infinity, Infinity); });
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.linear.transform.1.html b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.linear.transform.1.html
new file mode 100644
index 0000000000..5e79107907
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.linear.transform.1.html
@@ -0,0 +1,37 @@
+
+
+OffscreenCanvas test: 2d.gradient.linear.transform.1
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.gradient.linear.transform.1
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Linear gradient coordinates are relative to the coordinate space at the time of filling
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.linear.transform.1.worker.js b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.linear.transform.1.worker.js
new file mode 100644
index 0000000000..62a96e2f67
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.linear.transform.1.worker.js
@@ -0,0 +1,33 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.gradient.linear.transform.1
+// Description:Linear gradient coordinates are relative to the coordinate space at the time of filling
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("Linear gradient coordinates are relative to the coordinate space at the time of filling");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+var g = ctx.createLinearGradient(0, 0, 200, 0);
+g.addColorStop(0, '#f00');
+g.addColorStop(0.25, '#0f0');
+g.addColorStop(0.75, '#0f0');
+g.addColorStop(1, '#f00');
+ctx.fillStyle = g;
+ctx.translate(-50, 0);
+ctx.fillRect(50, 0, 100, 50);
+_assertPixel(canvas, 25,25, 0,255,0,255);
+_assertPixel(canvas, 50,25, 0,255,0,255);
+_assertPixel(canvas, 75,25, 0,255,0,255);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.linear.transform.2.html b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.linear.transform.2.html
new file mode 100644
index 0000000000..86fb507334
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.linear.transform.2.html
@@ -0,0 +1,38 @@
+
+
+OffscreenCanvas test: 2d.gradient.linear.transform.2
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.gradient.linear.transform.2
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Linear gradient coordinates are relative to the coordinate space at the time of filling
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.linear.transform.2.worker.js b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.linear.transform.2.worker.js
new file mode 100644
index 0000000000..dace251811
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.linear.transform.2.worker.js
@@ -0,0 +1,34 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.gradient.linear.transform.2
+// Description:Linear gradient coordinates are relative to the coordinate space at the time of filling
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("Linear gradient coordinates are relative to the coordinate space at the time of filling");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+ctx.translate(100, 0);
+var g = ctx.createLinearGradient(0, 0, 200, 0);
+g.addColorStop(0, '#f00');
+g.addColorStop(0.25, '#0f0');
+g.addColorStop(0.75, '#0f0');
+g.addColorStop(1, '#f00');
+ctx.fillStyle = g;
+ctx.translate(-150, 0);
+ctx.fillRect(50, 0, 100, 50);
+_assertPixel(canvas, 25,25, 0,255,0,255);
+_assertPixel(canvas, 50,25, 0,255,0,255);
+_assertPixel(canvas, 75,25, 0,255,0,255);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.linear.transform.3.html b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.linear.transform.3.html
new file mode 100644
index 0000000000..ccbc3ab283
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.linear.transform.3.html
@@ -0,0 +1,38 @@
+
+
+OffscreenCanvas test: 2d.gradient.linear.transform.3
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.gradient.linear.transform.3
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Linear gradient transforms do not experience broken caching effects
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.linear.transform.3.worker.js b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.linear.transform.3.worker.js
new file mode 100644
index 0000000000..8f5a7115ec
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.linear.transform.3.worker.js
@@ -0,0 +1,34 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.gradient.linear.transform.3
+// Description:Linear gradient transforms do not experience broken caching effects
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("Linear gradient transforms do not experience broken caching effects");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+var g = ctx.createLinearGradient(0, 0, 200, 0);
+g.addColorStop(0, '#f00');
+g.addColorStop(0.25, '#0f0');
+g.addColorStop(0.75, '#0f0');
+g.addColorStop(1, '#f00');
+ctx.fillStyle = g;
+ctx.fillRect(0, 0, 100, 50);
+ctx.translate(-50, 0);
+ctx.fillRect(50, 0, 100, 50);
+_assertPixel(canvas, 25,25, 0,255,0,255);
+_assertPixel(canvas, 50,25, 0,255,0,255);
+_assertPixel(canvas, 75,25, 0,255,0,255);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.object.compare.html b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.object.compare.html
new file mode 100644
index 0000000000..a091c32b2c
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.object.compare.html
@@ -0,0 +1,31 @@
+
+
+OffscreenCanvas test: 2d.gradient.object.compare
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.gradient.object.compare
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.object.compare.worker.js b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.object.compare.worker.js
new file mode 100644
index 0000000000..6c69e1ad35
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.object.compare.worker.js
@@ -0,0 +1,27 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.gradient.object.compare
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+var g1 = ctx.createLinearGradient(0, 0, 100, 0);
+var g2 = ctx.createLinearGradient(0, 0, 100, 0);
+_assertDifferent(g1, g2, "g1", "g2");
+ctx.fillStyle = g1;
+_assertSame(ctx.fillStyle, g1, "ctx.fillStyle", "g1");
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.object.crosscanvas.html b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.object.crosscanvas.html
new file mode 100644
index 0000000000..8d54f95f72
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.object.crosscanvas.html
@@ -0,0 +1,35 @@
+
+
+OffscreenCanvas test: 2d.gradient.object.crosscanvas
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.gradient.object.crosscanvas
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.object.crosscanvas.worker.js b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.object.crosscanvas.worker.js
new file mode 100644
index 0000000000..fa8cee44ca
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.object.crosscanvas.worker.js
@@ -0,0 +1,31 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.gradient.object.crosscanvas
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+ctx.fillStyle = '#f00';
+ctx.fillRect(0, 0, 100, 50);
+var offscreenCanvas2 = new OffscreenCanvas(100, 50);
+var g = offscreenCanvas2.getContext('2d').createLinearGradient(0, 0, 100, 0);
+g.addColorStop(0, '#0f0');
+g.addColorStop(1, '#0f0');
+ctx.fillStyle = g;
+ctx.fillRect(0, 0, 100, 50);
+_assertPixelApprox(canvas, 50,25, 0,255,0,255, 2);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.object.invalidcolor.html b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.object.invalidcolor.html
new file mode 100644
index 0000000000..e812278155
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.object.invalidcolor.html
@@ -0,0 +1,32 @@
+
+
+OffscreenCanvas test: 2d.gradient.object.invalidcolor
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.gradient.object.invalidcolor
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.object.invalidcolor.worker.js b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.object.invalidcolor.worker.js
new file mode 100644
index 0000000000..278df5a0d1
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.object.invalidcolor.worker.js
@@ -0,0 +1,28 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.gradient.object.invalidcolor
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+var g = ctx.createLinearGradient(0, 0, 100, 0);
+assert_throws_dom("SYNTAX_ERR", function() { g.addColorStop(0, ""); });
+assert_throws_dom("SYNTAX_ERR", function() { g.addColorStop(0, 'null'); });
+assert_throws_dom("SYNTAX_ERR", function() { g.addColorStop(0, 'undefined'); });
+assert_throws_dom("SYNTAX_ERR", function() { g.addColorStop(0, null); });
+assert_throws_dom("SYNTAX_ERR", function() { g.addColorStop(0, undefined); });
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.object.invalidoffset.html b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.object.invalidoffset.html
new file mode 100644
index 0000000000..bba405069c
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.object.invalidoffset.html
@@ -0,0 +1,32 @@
+
+
+OffscreenCanvas test: 2d.gradient.object.invalidoffset
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.gradient.object.invalidoffset
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.object.invalidoffset.worker.js b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.object.invalidoffset.worker.js
new file mode 100644
index 0000000000..f71c8402eb
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.object.invalidoffset.worker.js
@@ -0,0 +1,28 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.gradient.object.invalidoffset
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+var g = ctx.createLinearGradient(0, 0, 100, 0);
+assert_throws_dom("INDEX_SIZE_ERR", function() { g.addColorStop(-1, '#000'); });
+assert_throws_dom("INDEX_SIZE_ERR", function() { g.addColorStop(2, '#000'); });
+assert_throws_js(TypeError, function() { g.addColorStop(Infinity, '#000'); });
+assert_throws_js(TypeError, function() { g.addColorStop(-Infinity, '#000'); });
+assert_throws_js(TypeError, function() { g.addColorStop(NaN, '#000'); });
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.object.update.html b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.object.update.html
new file mode 100644
index 0000000000..175c3a215b
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.object.update.html
@@ -0,0 +1,35 @@
+
+
+OffscreenCanvas test: 2d.gradient.object.update
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.gradient.object.update
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.object.update.worker.js b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.object.update.worker.js
new file mode 100644
index 0000000000..7672114039
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.object.update.worker.js
@@ -0,0 +1,31 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.gradient.object.update
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+var g = ctx.createLinearGradient(-100, 0, 200, 0);
+g.addColorStop(0, '#f00');
+g.addColorStop(1, '#f00');
+ctx.fillStyle = g;
+ctx.fillRect(0, 0, 100, 50);
+g.addColorStop(0.1, '#0f0');
+g.addColorStop(0.9, '#0f0');
+ctx.fillRect(0, 0, 100, 50);
+_assertPixelApprox(canvas, 50,25, 0,255,0,255, 2);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.radial.cone.behind.html b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.radial.cone.behind.html
new file mode 100644
index 0000000000..537f960d8d
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.radial.cone.behind.html
@@ -0,0 +1,42 @@
+
+
+OffscreenCanvas test: 2d.gradient.radial.cone.behind
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.gradient.radial.cone.behind
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.radial.cone.behind.worker.js b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.radial.cone.behind.worker.js
new file mode 100644
index 0000000000..99711c732d
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.radial.cone.behind.worker.js
@@ -0,0 +1,38 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.gradient.radial.cone.behind
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+ctx.fillStyle = '#0f0';
+ctx.fillRect(0, 0, 100, 50);
+var g = ctx.createRadialGradient(120, 25, 10, 211, 25, 100);
+g.addColorStop(0, '#f00');
+g.addColorStop(1, '#f00');
+ctx.fillStyle = g;
+ctx.fillRect(0, 0, 100, 50);
+_assertPixel(canvas, 1,1, 0,255,0,255);
+_assertPixel(canvas, 50,1, 0,255,0,255);
+_assertPixel(canvas, 98,1, 0,255,0,255);
+_assertPixel(canvas, 1,25, 0,255,0,255);
+_assertPixel(canvas, 50,25, 0,255,0,255);
+_assertPixel(canvas, 98,25, 0,255,0,255);
+_assertPixel(canvas, 1,48, 0,255,0,255);
+_assertPixel(canvas, 50,48, 0,255,0,255);
+_assertPixel(canvas, 98,48, 0,255,0,255);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.radial.cone.beside.html b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.radial.cone.beside.html
new file mode 100644
index 0000000000..360f1ab735
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.radial.cone.beside.html
@@ -0,0 +1,42 @@
+
+
+OffscreenCanvas test: 2d.gradient.radial.cone.beside
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.gradient.radial.cone.beside
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.radial.cone.beside.worker.js b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.radial.cone.beside.worker.js
new file mode 100644
index 0000000000..6af48259a3
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.radial.cone.beside.worker.js
@@ -0,0 +1,38 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.gradient.radial.cone.beside
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+ctx.fillStyle = '#0f0';
+ctx.fillRect(0, 0, 100, 50);
+var g = ctx.createRadialGradient(0, 100, 40, 100, 100, 50);
+g.addColorStop(0, '#f00');
+g.addColorStop(1, '#f00');
+ctx.fillStyle = g;
+ctx.fillRect(0, 0, 100, 50);
+_assertPixel(canvas, 1,1, 0,255,0,255);
+_assertPixel(canvas, 50,1, 0,255,0,255);
+_assertPixel(canvas, 98,1, 0,255,0,255);
+_assertPixel(canvas, 1,25, 0,255,0,255);
+_assertPixel(canvas, 50,25, 0,255,0,255);
+_assertPixel(canvas, 98,25, 0,255,0,255);
+_assertPixel(canvas, 1,48, 0,255,0,255);
+_assertPixel(canvas, 50,48, 0,255,0,255);
+_assertPixel(canvas, 98,48, 0,255,0,255);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.radial.cone.bottom.html b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.radial.cone.bottom.html
new file mode 100644
index 0000000000..3f3690381d
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.radial.cone.bottom.html
@@ -0,0 +1,42 @@
+
+
+OffscreenCanvas test: 2d.gradient.radial.cone.bottom
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.gradient.radial.cone.bottom
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.radial.cone.bottom.worker.js b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.radial.cone.bottom.worker.js
new file mode 100644
index 0000000000..2eca2d573e
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.radial.cone.bottom.worker.js
@@ -0,0 +1,38 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.gradient.radial.cone.bottom
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+ctx.fillStyle = '#f00';
+ctx.fillRect(0, 0, 100, 50);
+var g = ctx.createRadialGradient(210, 25, 100, 230, 25, 101);
+g.addColorStop(0, '#0f0');
+g.addColorStop(1, '#f00');
+ctx.fillStyle = g;
+ctx.fillRect(0, 0, 100, 50);
+_assertPixel(canvas, 1,1, 0,255,0,255);
+_assertPixel(canvas, 50,1, 0,255,0,255);
+_assertPixel(canvas, 98,1, 0,255,0,255);
+_assertPixel(canvas, 1,25, 0,255,0,255);
+_assertPixel(canvas, 50,25, 0,255,0,255);
+_assertPixel(canvas, 98,25, 0,255,0,255);
+_assertPixel(canvas, 1,48, 0,255,0,255);
+_assertPixel(canvas, 50,48, 0,255,0,255);
+_assertPixel(canvas, 98,48, 0,255,0,255);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.radial.cone.cylinder.html b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.radial.cone.cylinder.html
new file mode 100644
index 0000000000..700740938c
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.radial.cone.cylinder.html
@@ -0,0 +1,42 @@
+
+
+OffscreenCanvas test: 2d.gradient.radial.cone.cylinder
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.gradient.radial.cone.cylinder
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.radial.cone.cylinder.worker.js b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.radial.cone.cylinder.worker.js
new file mode 100644
index 0000000000..25ff9b861d
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.radial.cone.cylinder.worker.js
@@ -0,0 +1,38 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.gradient.radial.cone.cylinder
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+ctx.fillStyle = '#f00';
+ctx.fillRect(0, 0, 100, 50);
+var g = ctx.createRadialGradient(210, 25, 100, 230, 25, 100);
+g.addColorStop(0, '#0f0');
+g.addColorStop(1, '#f00');
+ctx.fillStyle = g;
+ctx.fillRect(0, 0, 100, 50);
+_assertPixel(canvas, 1,1, 0,255,0,255);
+_assertPixel(canvas, 50,1, 0,255,0,255);
+_assertPixel(canvas, 98,1, 0,255,0,255);
+_assertPixel(canvas, 1,25, 0,255,0,255);
+_assertPixel(canvas, 50,25, 0,255,0,255);
+_assertPixel(canvas, 98,25, 0,255,0,255);
+_assertPixel(canvas, 1,48, 0,255,0,255);
+_assertPixel(canvas, 50,48, 0,255,0,255);
+_assertPixel(canvas, 98,48, 0,255,0,255);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.radial.cone.front.html b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.radial.cone.front.html
new file mode 100644
index 0000000000..12f14ce005
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.radial.cone.front.html
@@ -0,0 +1,42 @@
+
+
+OffscreenCanvas test: 2d.gradient.radial.cone.front
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.gradient.radial.cone.front
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.radial.cone.front.worker.js b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.radial.cone.front.worker.js
new file mode 100644
index 0000000000..6053cb40d1
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.radial.cone.front.worker.js
@@ -0,0 +1,38 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.gradient.radial.cone.front
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+ctx.fillStyle = '#f00';
+ctx.fillRect(0, 0, 100, 50);
+var g = ctx.createRadialGradient(311, 25, 10, 210, 25, 100);
+g.addColorStop(0, '#f00');
+g.addColorStop(1, '#0f0');
+ctx.fillStyle = g;
+ctx.fillRect(0, 0, 100, 50);
+_assertPixel(canvas, 1,1, 0,255,0,255);
+_assertPixel(canvas, 50,1, 0,255,0,255);
+_assertPixel(canvas, 98,1, 0,255,0,255);
+_assertPixel(canvas, 1,25, 0,255,0,255);
+_assertPixel(canvas, 50,25, 0,255,0,255);
+_assertPixel(canvas, 98,25, 0,255,0,255);
+_assertPixel(canvas, 1,48, 0,255,0,255);
+_assertPixel(canvas, 50,48, 0,255,0,255);
+_assertPixel(canvas, 98,48, 0,255,0,255);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.radial.cone.shape1.html b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.radial.cone.shape1.html
new file mode 100644
index 0000000000..242aaa0128
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.radial.cone.shape1.html
@@ -0,0 +1,49 @@
+
+
+OffscreenCanvas test: 2d.gradient.radial.cone.shape1
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.gradient.radial.cone.shape1
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.radial.cone.shape1.worker.js b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.radial.cone.shape1.worker.js
new file mode 100644
index 0000000000..15e7a6f696
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.radial.cone.shape1.worker.js
@@ -0,0 +1,45 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.gradient.radial.cone.shape1
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+var tol = 1; // tolerance to avoid antialiasing artifacts
+ctx.fillStyle = '#0f0';
+ctx.fillRect(0, 0, 100, 50);
+ctx.fillStyle = '#f00';
+ctx.beginPath();
+ctx.moveTo(30+tol, 40);
+ctx.lineTo(110, -20+tol);
+ctx.lineTo(110, 100-tol);
+ctx.fill();
+var g = ctx.createRadialGradient(30+10*5/2, 40, 10*3/2, 30+10*15/4, 40, 10*9/4);
+g.addColorStop(0, '#0f0');
+g.addColorStop(1, '#0f0');
+ctx.fillStyle = g;
+ctx.fillRect(0, 0, 100, 50);
+_assertPixel(canvas, 1,1, 0,255,0,255);
+_assertPixel(canvas, 50,1, 0,255,0,255);
+_assertPixel(canvas, 98,1, 0,255,0,255);
+_assertPixel(canvas, 1,25, 0,255,0,255);
+_assertPixel(canvas, 50,25, 0,255,0,255);
+_assertPixel(canvas, 98,25, 0,255,0,255);
+_assertPixel(canvas, 1,48, 0,255,0,255);
+_assertPixel(canvas, 50,48, 0,255,0,255);
+_assertPixel(canvas, 98,48, 0,255,0,255);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.radial.cone.shape2.html b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.radial.cone.shape2.html
new file mode 100644
index 0000000000..d51a132f82
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.radial.cone.shape2.html
@@ -0,0 +1,49 @@
+
+
+OffscreenCanvas test: 2d.gradient.radial.cone.shape2
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.gradient.radial.cone.shape2
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.radial.cone.shape2.worker.js b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.radial.cone.shape2.worker.js
new file mode 100644
index 0000000000..793d2513dd
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.radial.cone.shape2.worker.js
@@ -0,0 +1,45 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.gradient.radial.cone.shape2
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+var tol = 1; // tolerance to avoid antialiasing artifacts
+ctx.fillStyle = '#0f0';
+ctx.fillRect(0, 0, 100, 50);
+var g = ctx.createRadialGradient(30+10*5/2, 40, 10*3/2, 30+10*15/4, 40, 10*9/4);
+g.addColorStop(0, '#f00');
+g.addColorStop(1, '#f00');
+ctx.fillStyle = g;
+ctx.fillRect(0, 0, 100, 50);
+ctx.fillStyle = '#0f0';
+ctx.beginPath();
+ctx.moveTo(30-tol, 40);
+ctx.lineTo(110, -20-tol);
+ctx.lineTo(110, 100+tol);
+ctx.fill();
+_assertPixel(canvas, 1,1, 0,255,0,255);
+_assertPixel(canvas, 50,1, 0,255,0,255);
+_assertPixel(canvas, 98,1, 0,255,0,255);
+_assertPixel(canvas, 1,25, 0,255,0,255);
+_assertPixel(canvas, 50,25, 0,255,0,255);
+_assertPixel(canvas, 98,25, 0,255,0,255);
+_assertPixel(canvas, 1,48, 0,255,0,255);
+_assertPixel(canvas, 50,48, 0,255,0,255);
+_assertPixel(canvas, 98,48, 0,255,0,255);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.radial.cone.top.html b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.radial.cone.top.html
new file mode 100644
index 0000000000..9759eb3fa9
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.radial.cone.top.html
@@ -0,0 +1,42 @@
+
+
+OffscreenCanvas test: 2d.gradient.radial.cone.top
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.gradient.radial.cone.top
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.radial.cone.top.worker.js b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.radial.cone.top.worker.js
new file mode 100644
index 0000000000..2ee6de3479
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.radial.cone.top.worker.js
@@ -0,0 +1,38 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.gradient.radial.cone.top
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+ctx.fillStyle = '#f00';
+ctx.fillRect(0, 0, 100, 50);
+var g = ctx.createRadialGradient(230, 25, 100, 100, 25, 101);
+g.addColorStop(0, '#f00');
+g.addColorStop(1, '#0f0');
+ctx.fillStyle = g;
+ctx.fillRect(0, 0, 100, 50);
+_assertPixel(canvas, 1,1, 0,255,0,255);
+_assertPixel(canvas, 50,1, 0,255,0,255);
+_assertPixel(canvas, 98,1, 0,255,0,255);
+_assertPixel(canvas, 1,25, 0,255,0,255);
+_assertPixel(canvas, 50,25, 0,255,0,255);
+_assertPixel(canvas, 98,25, 0,255,0,255);
+_assertPixel(canvas, 1,48, 0,255,0,255);
+_assertPixel(canvas, 50,48, 0,255,0,255);
+_assertPixel(canvas, 98,48, 0,255,0,255);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.radial.equal.html b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.radial.equal.html
new file mode 100644
index 0000000000..465ee976fa
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.radial.equal.html
@@ -0,0 +1,42 @@
+
+
+OffscreenCanvas test: 2d.gradient.radial.equal
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.gradient.radial.equal
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.radial.equal.worker.js b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.radial.equal.worker.js
new file mode 100644
index 0000000000..74567335b4
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.radial.equal.worker.js
@@ -0,0 +1,38 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.gradient.radial.equal
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+ctx.fillStyle = '#0f0';
+ctx.fillRect(0, 0, 100, 50);
+var g = ctx.createRadialGradient(50, 25, 20, 50, 25, 20);
+g.addColorStop(0, '#f00');
+g.addColorStop(1, '#f00');
+ctx.fillStyle = g;
+ctx.fillRect(0, 0, 100, 50);
+_assertPixel(canvas, 1,1, 0,255,0,255);
+_assertPixel(canvas, 50,1, 0,255,0,255);
+_assertPixel(canvas, 98,1, 0,255,0,255);
+_assertPixel(canvas, 1,25, 0,255,0,255);
+_assertPixel(canvas, 50,25, 0,255,0,255);
+_assertPixel(canvas, 98,25, 0,255,0,255);
+_assertPixel(canvas, 1,48, 0,255,0,255);
+_assertPixel(canvas, 50,48, 0,255,0,255);
+_assertPixel(canvas, 98,48, 0,255,0,255);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.radial.inside1.html b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.radial.inside1.html
new file mode 100644
index 0000000000..7c6fd31d67
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.radial.inside1.html
@@ -0,0 +1,42 @@
+
+
+OffscreenCanvas test: 2d.gradient.radial.inside1
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.gradient.radial.inside1
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.radial.inside1.worker.js b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.radial.inside1.worker.js
new file mode 100644
index 0000000000..6d73c0935a
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.radial.inside1.worker.js
@@ -0,0 +1,38 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.gradient.radial.inside1
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+ctx.fillStyle = '#f00';
+ctx.fillRect(0, 0, 100, 50);
+var g = ctx.createRadialGradient(50, 25, 100, 50, 25, 200);
+g.addColorStop(0, '#0f0');
+g.addColorStop(1, '#f00');
+ctx.fillStyle = g;
+ctx.fillRect(0, 0, 100, 50);
+_assertPixel(canvas, 1,1, 0,255,0,255);
+_assertPixel(canvas, 50,1, 0,255,0,255);
+_assertPixel(canvas, 98,1, 0,255,0,255);
+_assertPixel(canvas, 1,25, 0,255,0,255);
+_assertPixel(canvas, 50,25, 0,255,0,255);
+_assertPixel(canvas, 98,25, 0,255,0,255);
+_assertPixel(canvas, 1,48, 0,255,0,255);
+_assertPixel(canvas, 50,48, 0,255,0,255);
+_assertPixel(canvas, 98,48, 0,255,0,255);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.radial.inside2.html b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.radial.inside2.html
new file mode 100644
index 0000000000..fbad8b57b5
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.radial.inside2.html
@@ -0,0 +1,42 @@
+
+
+OffscreenCanvas test: 2d.gradient.radial.inside2
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.gradient.radial.inside2
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.radial.inside2.worker.js b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.radial.inside2.worker.js
new file mode 100644
index 0000000000..aa6ecba5f4
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.radial.inside2.worker.js
@@ -0,0 +1,38 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.gradient.radial.inside2
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+ctx.fillStyle = '#f00';
+ctx.fillRect(0, 0, 100, 50);
+var g = ctx.createRadialGradient(50, 25, 200, 50, 25, 100);
+g.addColorStop(0, '#f00');
+g.addColorStop(1, '#0f0');
+ctx.fillStyle = g;
+ctx.fillRect(0, 0, 100, 50);
+_assertPixel(canvas, 1,1, 0,255,0,255);
+_assertPixel(canvas, 50,1, 0,255,0,255);
+_assertPixel(canvas, 98,1, 0,255,0,255);
+_assertPixel(canvas, 1,25, 0,255,0,255);
+_assertPixel(canvas, 50,25, 0,255,0,255);
+_assertPixel(canvas, 98,25, 0,255,0,255);
+_assertPixel(canvas, 1,48, 0,255,0,255);
+_assertPixel(canvas, 50,48, 0,255,0,255);
+_assertPixel(canvas, 98,48, 0,255,0,255);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.radial.inside3.html b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.radial.inside3.html
new file mode 100644
index 0000000000..54794b13fc
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.radial.inside3.html
@@ -0,0 +1,43 @@
+
+
+OffscreenCanvas test: 2d.gradient.radial.inside3
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.gradient.radial.inside3
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.radial.inside3.worker.js b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.radial.inside3.worker.js
new file mode 100644
index 0000000000..b6d58b656c
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.radial.inside3.worker.js
@@ -0,0 +1,39 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.gradient.radial.inside3
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+ctx.fillStyle = '#f00';
+ctx.fillRect(0, 0, 100, 50);
+var g = ctx.createRadialGradient(50, 25, 200, 50, 25, 100);
+g.addColorStop(0, '#f00');
+g.addColorStop(0.993, '#f00');
+g.addColorStop(1, '#0f0');
+ctx.fillStyle = g;
+ctx.fillRect(0, 0, 100, 50);
+_assertPixel(canvas, 1,1, 0,255,0,255);
+_assertPixel(canvas, 50,1, 0,255,0,255);
+_assertPixel(canvas, 98,1, 0,255,0,255);
+_assertPixel(canvas, 1,25, 0,255,0,255);
+_assertPixel(canvas, 50,25, 0,255,0,255);
+_assertPixel(canvas, 98,25, 0,255,0,255);
+_assertPixel(canvas, 1,48, 0,255,0,255);
+_assertPixel(canvas, 50,48, 0,255,0,255);
+_assertPixel(canvas, 98,48, 0,255,0,255);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.radial.negative.html b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.radial.negative.html
new file mode 100644
index 0000000000..1fb6af5228
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.radial.negative.html
@@ -0,0 +1,29 @@
+
+
+OffscreenCanvas test: 2d.gradient.radial.negative
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.gradient.radial.negative
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              createRadialGradient() throws INDEX_SIZE_ERR if either radius is negative
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.radial.negative.worker.js b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.radial.negative.worker.js
new file mode 100644
index 0000000000..e0d2c7cc33
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.radial.negative.worker.js
@@ -0,0 +1,25 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.gradient.radial.negative
+// Description:createRadialGradient() throws INDEX_SIZE_ERR if either radius is negative
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("createRadialGradient() throws INDEX_SIZE_ERR if either radius is negative");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+assert_throws_dom("INDEX_SIZE_ERR", function() { ctx.createRadialGradient(0, 0, -0.1, 0, 0, 1); });
+assert_throws_dom("INDEX_SIZE_ERR", function() { ctx.createRadialGradient(0, 0, 1, 0, 0, -0.1); });
+assert_throws_dom("INDEX_SIZE_ERR", function() { ctx.createRadialGradient(0, 0, -0.1, 0, 0, -0.1); });
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.radial.nonfinite.html b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.radial.nonfinite.html
new file mode 100644
index 0000000000..75ab5740db
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.radial.nonfinite.html
@@ -0,0 +1,101 @@
+
+
+OffscreenCanvas test: 2d.gradient.radial.nonfinite
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.gradient.radial.nonfinite
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              createRadialGradient() throws TypeError if arguments are not finite
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.radial.nonfinite.worker.js b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.radial.nonfinite.worker.js
new file mode 100644
index 0000000000..f09946947c
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.radial.nonfinite.worker.js
@@ -0,0 +1,97 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.gradient.radial.nonfinite
+// Description:createRadialGradient() throws TypeError if arguments are not finite
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("createRadialGradient() throws TypeError if arguments are not finite");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+assert_throws_js(TypeError, function() { ctx.createRadialGradient(Infinity, 0, 1, 0, 0, 1); });
+assert_throws_js(TypeError, function() { ctx.createRadialGradient(-Infinity, 0, 1, 0, 0, 1); });
+assert_throws_js(TypeError, function() { ctx.createRadialGradient(NaN, 0, 1, 0, 0, 1); });
+assert_throws_js(TypeError, function() { ctx.createRadialGradient(0, Infinity, 1, 0, 0, 1); });
+assert_throws_js(TypeError, function() { ctx.createRadialGradient(0, -Infinity, 1, 0, 0, 1); });
+assert_throws_js(TypeError, function() { ctx.createRadialGradient(0, NaN, 1, 0, 0, 1); });
+assert_throws_js(TypeError, function() { ctx.createRadialGradient(0, 0, Infinity, 0, 0, 1); });
+assert_throws_js(TypeError, function() { ctx.createRadialGradient(0, 0, -Infinity, 0, 0, 1); });
+assert_throws_js(TypeError, function() { ctx.createRadialGradient(0, 0, NaN, 0, 0, 1); });
+assert_throws_js(TypeError, function() { ctx.createRadialGradient(0, 0, 1, Infinity, 0, 1); });
+assert_throws_js(TypeError, function() { ctx.createRadialGradient(0, 0, 1, -Infinity, 0, 1); });
+assert_throws_js(TypeError, function() { ctx.createRadialGradient(0, 0, 1, NaN, 0, 1); });
+assert_throws_js(TypeError, function() { ctx.createRadialGradient(0, 0, 1, 0, Infinity, 1); });
+assert_throws_js(TypeError, function() { ctx.createRadialGradient(0, 0, 1, 0, -Infinity, 1); });
+assert_throws_js(TypeError, function() { ctx.createRadialGradient(0, 0, 1, 0, NaN, 1); });
+assert_throws_js(TypeError, function() { ctx.createRadialGradient(0, 0, 1, 0, 0, Infinity); });
+assert_throws_js(TypeError, function() { ctx.createRadialGradient(0, 0, 1, 0, 0, -Infinity); });
+assert_throws_js(TypeError, function() { ctx.createRadialGradient(0, 0, 1, 0, 0, NaN); });
+assert_throws_js(TypeError, function() { ctx.createRadialGradient(Infinity, Infinity, 1, 0, 0, 1); });
+assert_throws_js(TypeError, function() { ctx.createRadialGradient(Infinity, Infinity, Infinity, 0, 0, 1); });
+assert_throws_js(TypeError, function() { ctx.createRadialGradient(Infinity, Infinity, Infinity, Infinity, 0, 1); });
+assert_throws_js(TypeError, function() { ctx.createRadialGradient(Infinity, Infinity, Infinity, Infinity, Infinity, 1); });
+assert_throws_js(TypeError, function() { ctx.createRadialGradient(Infinity, Infinity, Infinity, Infinity, Infinity, Infinity); });
+assert_throws_js(TypeError, function() { ctx.createRadialGradient(Infinity, Infinity, Infinity, Infinity, 0, Infinity); });
+assert_throws_js(TypeError, function() { ctx.createRadialGradient(Infinity, Infinity, Infinity, 0, Infinity, 1); });
+assert_throws_js(TypeError, function() { ctx.createRadialGradient(Infinity, Infinity, Infinity, 0, Infinity, Infinity); });
+assert_throws_js(TypeError, function() { ctx.createRadialGradient(Infinity, Infinity, Infinity, 0, 0, Infinity); });
+assert_throws_js(TypeError, function() { ctx.createRadialGradient(Infinity, Infinity, 1, Infinity, 0, 1); });
+assert_throws_js(TypeError, function() { ctx.createRadialGradient(Infinity, Infinity, 1, Infinity, Infinity, 1); });
+assert_throws_js(TypeError, function() { ctx.createRadialGradient(Infinity, Infinity, 1, Infinity, Infinity, Infinity); });
+assert_throws_js(TypeError, function() { ctx.createRadialGradient(Infinity, Infinity, 1, Infinity, 0, Infinity); });
+assert_throws_js(TypeError, function() { ctx.createRadialGradient(Infinity, Infinity, 1, 0, Infinity, 1); });
+assert_throws_js(TypeError, function() { ctx.createRadialGradient(Infinity, Infinity, 1, 0, Infinity, Infinity); });
+assert_throws_js(TypeError, function() { ctx.createRadialGradient(Infinity, Infinity, 1, 0, 0, Infinity); });
+assert_throws_js(TypeError, function() { ctx.createRadialGradient(Infinity, 0, Infinity, 0, 0, 1); });
+assert_throws_js(TypeError, function() { ctx.createRadialGradient(Infinity, 0, Infinity, Infinity, 0, 1); });
+assert_throws_js(TypeError, function() { ctx.createRadialGradient(Infinity, 0, Infinity, Infinity, Infinity, 1); });
+assert_throws_js(TypeError, function() { ctx.createRadialGradient(Infinity, 0, Infinity, Infinity, Infinity, Infinity); });
+assert_throws_js(TypeError, function() { ctx.createRadialGradient(Infinity, 0, Infinity, Infinity, 0, Infinity); });
+assert_throws_js(TypeError, function() { ctx.createRadialGradient(Infinity, 0, Infinity, 0, Infinity, 1); });
+assert_throws_js(TypeError, function() { ctx.createRadialGradient(Infinity, 0, Infinity, 0, Infinity, Infinity); });
+assert_throws_js(TypeError, function() { ctx.createRadialGradient(Infinity, 0, Infinity, 0, 0, Infinity); });
+assert_throws_js(TypeError, function() { ctx.createRadialGradient(Infinity, 0, 1, Infinity, 0, 1); });
+assert_throws_js(TypeError, function() { ctx.createRadialGradient(Infinity, 0, 1, Infinity, Infinity, 1); });
+assert_throws_js(TypeError, function() { ctx.createRadialGradient(Infinity, 0, 1, Infinity, Infinity, Infinity); });
+assert_throws_js(TypeError, function() { ctx.createRadialGradient(Infinity, 0, 1, Infinity, 0, Infinity); });
+assert_throws_js(TypeError, function() { ctx.createRadialGradient(Infinity, 0, 1, 0, Infinity, 1); });
+assert_throws_js(TypeError, function() { ctx.createRadialGradient(Infinity, 0, 1, 0, Infinity, Infinity); });
+assert_throws_js(TypeError, function() { ctx.createRadialGradient(Infinity, 0, 1, 0, 0, Infinity); });
+assert_throws_js(TypeError, function() { ctx.createRadialGradient(0, Infinity, Infinity, 0, 0, 1); });
+assert_throws_js(TypeError, function() { ctx.createRadialGradient(0, Infinity, Infinity, Infinity, 0, 1); });
+assert_throws_js(TypeError, function() { ctx.createRadialGradient(0, Infinity, Infinity, Infinity, Infinity, 1); });
+assert_throws_js(TypeError, function() { ctx.createRadialGradient(0, Infinity, Infinity, Infinity, Infinity, Infinity); });
+assert_throws_js(TypeError, function() { ctx.createRadialGradient(0, Infinity, Infinity, Infinity, 0, Infinity); });
+assert_throws_js(TypeError, function() { ctx.createRadialGradient(0, Infinity, Infinity, 0, Infinity, 1); });
+assert_throws_js(TypeError, function() { ctx.createRadialGradient(0, Infinity, Infinity, 0, Infinity, Infinity); });
+assert_throws_js(TypeError, function() { ctx.createRadialGradient(0, Infinity, Infinity, 0, 0, Infinity); });
+assert_throws_js(TypeError, function() { ctx.createRadialGradient(0, Infinity, 1, Infinity, 0, 1); });
+assert_throws_js(TypeError, function() { ctx.createRadialGradient(0, Infinity, 1, Infinity, Infinity, 1); });
+assert_throws_js(TypeError, function() { ctx.createRadialGradient(0, Infinity, 1, Infinity, Infinity, Infinity); });
+assert_throws_js(TypeError, function() { ctx.createRadialGradient(0, Infinity, 1, Infinity, 0, Infinity); });
+assert_throws_js(TypeError, function() { ctx.createRadialGradient(0, Infinity, 1, 0, Infinity, 1); });
+assert_throws_js(TypeError, function() { ctx.createRadialGradient(0, Infinity, 1, 0, Infinity, Infinity); });
+assert_throws_js(TypeError, function() { ctx.createRadialGradient(0, Infinity, 1, 0, 0, Infinity); });
+assert_throws_js(TypeError, function() { ctx.createRadialGradient(0, 0, Infinity, Infinity, 0, 1); });
+assert_throws_js(TypeError, function() { ctx.createRadialGradient(0, 0, Infinity, Infinity, Infinity, 1); });
+assert_throws_js(TypeError, function() { ctx.createRadialGradient(0, 0, Infinity, Infinity, Infinity, Infinity); });
+assert_throws_js(TypeError, function() { ctx.createRadialGradient(0, 0, Infinity, Infinity, 0, Infinity); });
+assert_throws_js(TypeError, function() { ctx.createRadialGradient(0, 0, Infinity, 0, Infinity, 1); });
+assert_throws_js(TypeError, function() { ctx.createRadialGradient(0, 0, Infinity, 0, Infinity, Infinity); });
+assert_throws_js(TypeError, function() { ctx.createRadialGradient(0, 0, Infinity, 0, 0, Infinity); });
+assert_throws_js(TypeError, function() { ctx.createRadialGradient(0, 0, 1, Infinity, Infinity, 1); });
+assert_throws_js(TypeError, function() { ctx.createRadialGradient(0, 0, 1, Infinity, Infinity, Infinity); });
+assert_throws_js(TypeError, function() { ctx.createRadialGradient(0, 0, 1, Infinity, 0, Infinity); });
+assert_throws_js(TypeError, function() { ctx.createRadialGradient(0, 0, 1, 0, Infinity, Infinity); });
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.radial.outside1.html b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.radial.outside1.html
new file mode 100644
index 0000000000..44b2aa49fc
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.radial.outside1.html
@@ -0,0 +1,42 @@
+
+
+OffscreenCanvas test: 2d.gradient.radial.outside1
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.gradient.radial.outside1
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.radial.outside1.worker.js b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.radial.outside1.worker.js
new file mode 100644
index 0000000000..e1d3cddb24
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.radial.outside1.worker.js
@@ -0,0 +1,38 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.gradient.radial.outside1
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+ctx.fillStyle = '#f00';
+ctx.fillRect(0, 0, 100, 50);
+var g = ctx.createRadialGradient(200, 25, 10, 200, 25, 20);
+g.addColorStop(0, '#f00');
+g.addColorStop(1, '#0f0');
+ctx.fillStyle = g;
+ctx.fillRect(0, 0, 100, 50);
+_assertPixel(canvas, 1,1, 0,255,0,255);
+_assertPixel(canvas, 50,1, 0,255,0,255);
+_assertPixel(canvas, 98,1, 0,255,0,255);
+_assertPixel(canvas, 1,25, 0,255,0,255);
+_assertPixel(canvas, 50,25, 0,255,0,255);
+_assertPixel(canvas, 98,25, 0,255,0,255);
+_assertPixel(canvas, 1,48, 0,255,0,255);
+_assertPixel(canvas, 50,48, 0,255,0,255);
+_assertPixel(canvas, 98,48, 0,255,0,255);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.radial.outside2.html b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.radial.outside2.html
new file mode 100644
index 0000000000..e9e7ce497c
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.radial.outside2.html
@@ -0,0 +1,42 @@
+
+
+OffscreenCanvas test: 2d.gradient.radial.outside2
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.gradient.radial.outside2
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.radial.outside2.worker.js b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.radial.outside2.worker.js
new file mode 100644
index 0000000000..a3f0235ed7
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.radial.outside2.worker.js
@@ -0,0 +1,38 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.gradient.radial.outside2
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+ctx.fillStyle = '#f00';
+ctx.fillRect(0, 0, 100, 50);
+var g = ctx.createRadialGradient(200, 25, 20, 200, 25, 10);
+g.addColorStop(0, '#0f0');
+g.addColorStop(1, '#f00');
+ctx.fillStyle = g;
+ctx.fillRect(0, 0, 100, 50);
+_assertPixel(canvas, 1,1, 0,255,0,255);
+_assertPixel(canvas, 50,1, 0,255,0,255);
+_assertPixel(canvas, 98,1, 0,255,0,255);
+_assertPixel(canvas, 1,25, 0,255,0,255);
+_assertPixel(canvas, 50,25, 0,255,0,255);
+_assertPixel(canvas, 98,25, 0,255,0,255);
+_assertPixel(canvas, 1,48, 0,255,0,255);
+_assertPixel(canvas, 50,48, 0,255,0,255);
+_assertPixel(canvas, 98,48, 0,255,0,255);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.radial.outside3.html b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.radial.outside3.html
new file mode 100644
index 0000000000..b66480a52c
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.radial.outside3.html
@@ -0,0 +1,43 @@
+
+
+OffscreenCanvas test: 2d.gradient.radial.outside3
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.gradient.radial.outside3
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.radial.outside3.worker.js b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.radial.outside3.worker.js
new file mode 100644
index 0000000000..7b90c87d03
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.radial.outside3.worker.js
@@ -0,0 +1,39 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.gradient.radial.outside3
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+ctx.fillStyle = '#f00';
+ctx.fillRect(0, 0, 100, 50);
+var g = ctx.createRadialGradient(200, 25, 20, 200, 25, 10);
+g.addColorStop(0, '#0f0');
+g.addColorStop(0.001, '#f00');
+g.addColorStop(1, '#f00');
+ctx.fillStyle = g;
+ctx.fillRect(0, 0, 100, 50);
+_assertPixel(canvas, 1,1, 0,255,0,255);
+_assertPixel(canvas, 50,1, 0,255,0,255);
+_assertPixel(canvas, 98,1, 0,255,0,255);
+_assertPixel(canvas, 1,25, 0,255,0,255);
+_assertPixel(canvas, 50,25, 0,255,0,255);
+_assertPixel(canvas, 98,25, 0,255,0,255);
+_assertPixel(canvas, 1,48, 0,255,0,255);
+_assertPixel(canvas, 50,48, 0,255,0,255);
+_assertPixel(canvas, 98,48, 0,255,0,255);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.radial.touch1.html b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.radial.touch1.html
new file mode 100644
index 0000000000..c042b03b33
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.radial.touch1.html
@@ -0,0 +1,42 @@
+
+
+OffscreenCanvas test: 2d.gradient.radial.touch1
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.gradient.radial.touch1
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.radial.touch1.worker.js b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.radial.touch1.worker.js
new file mode 100644
index 0000000000..7465345f6b
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.radial.touch1.worker.js
@@ -0,0 +1,38 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.gradient.radial.touch1
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+ctx.fillStyle = '#0f0';
+ctx.fillRect(0, 0, 100, 50);
+var g = ctx.createRadialGradient(150, 25, 50, 200, 25, 100);
+g.addColorStop(0, '#f00');
+g.addColorStop(1, '#f00');
+ctx.fillStyle = g;
+ctx.fillRect(0, 0, 100, 50);
+_assertPixel(canvas, 1,1, 0,255,0,255);
+_assertPixel(canvas, 50,1, 0,255,0,255);
+_assertPixel(canvas, 98,1, 0,255,0,255);
+_assertPixel(canvas, 1,25, 0,255,0,255);
+_assertPixel(canvas, 50,25, 0,255,0,255);
+_assertPixel(canvas, 98,25, 0,255,0,255);
+_assertPixel(canvas, 1,48, 0,255,0,255);
+_assertPixel(canvas, 50,48, 0,255,0,255);
+_assertPixel(canvas, 98,48, 0,255,0,255);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.radial.touch2.html b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.radial.touch2.html
new file mode 100644
index 0000000000..5da1d592f8
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.radial.touch2.html
@@ -0,0 +1,44 @@
+
+
+OffscreenCanvas test: 2d.gradient.radial.touch2
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.gradient.radial.touch2
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.radial.touch2.worker.js b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.radial.touch2.worker.js
new file mode 100644
index 0000000000..91dfcb31ac
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.radial.touch2.worker.js
@@ -0,0 +1,40 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.gradient.radial.touch2
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+ctx.fillStyle = '#f00';
+ctx.fillRect(0, 0, 100, 50);
+var g = ctx.createRadialGradient(-80, 25, 70, 0, 25, 150);
+g.addColorStop(0, '#f00');
+g.addColorStop(0.01, '#0f0');
+g.addColorStop(0.99, '#0f0');
+g.addColorStop(1, '#f00');
+ctx.fillStyle = g;
+ctx.fillRect(0, 0, 100, 50);
+_assertPixel(canvas, 1,1, 0,255,0,255);
+_assertPixel(canvas, 50,1, 0,255,0,255);
+_assertPixel(canvas, 98,1, 0,255,0,255);
+_assertPixel(canvas, 1,25, 0,255,0,255);
+_assertPixel(canvas, 50,25, 0,255,0,255);
+_assertPixel(canvas, 98,25, 0,255,0,255);
+_assertPixel(canvas, 1,48, 0,255,0,255);
+_assertPixel(canvas, 50,48, 0,255,0,255);
+_assertPixel(canvas, 98,48, 0,255,0,255);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.radial.touch3.html b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.radial.touch3.html
new file mode 100644
index 0000000000..804589f074
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.radial.touch3.html
@@ -0,0 +1,42 @@
+
+
+OffscreenCanvas test: 2d.gradient.radial.touch3
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.gradient.radial.touch3
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.radial.touch3.worker.js b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.radial.touch3.worker.js
new file mode 100644
index 0000000000..11e17fbb80
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.radial.touch3.worker.js
@@ -0,0 +1,38 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.gradient.radial.touch3
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+ctx.fillStyle = '#0f0';
+ctx.fillRect(0, 0, 100, 50);
+var g = ctx.createRadialGradient(120, -15, 25, 140, -30, 50);
+g.addColorStop(0, '#f00');
+g.addColorStop(1, '#f00');
+ctx.fillStyle = g;
+ctx.fillRect(0, 0, 100, 50);
+_assertPixel(canvas, 1,1, 0,255,0,255);
+_assertPixel(canvas, 50,1, 0,255,0,255);
+_assertPixel(canvas, 98,1, 0,255,0,255);
+_assertPixel(canvas, 1,25, 0,255,0,255);
+_assertPixel(canvas, 50,25, 0,255,0,255);
+_assertPixel(canvas, 98,25, 0,255,0,255);
+_assertPixel(canvas, 1,48, 0,255,0,255);
+_assertPixel(canvas, 50,48, 0,255,0,255);
+_assertPixel(canvas, 98,48, 0,255,0,255);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.radial.transform.1.html b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.radial.transform.1.html
new file mode 100644
index 0000000000..c54044c0ea
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.radial.transform.1.html
@@ -0,0 +1,38 @@
+
+
+OffscreenCanvas test: 2d.gradient.radial.transform.1
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.gradient.radial.transform.1
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Radial gradient coordinates are relative to the coordinate space at the time of filling
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.radial.transform.1.worker.js b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.radial.transform.1.worker.js
new file mode 100644
index 0000000000..e2159d269f
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.radial.transform.1.worker.js
@@ -0,0 +1,34 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.gradient.radial.transform.1
+// Description:Radial gradient coordinates are relative to the coordinate space at the time of filling
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("Radial gradient coordinates are relative to the coordinate space at the time of filling");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+var g = ctx.createRadialGradient(0, 0, 0, 0, 0, 11.2);
+g.addColorStop(0, '#0f0');
+g.addColorStop(0.5, '#0f0');
+g.addColorStop(0.51, '#f00');
+g.addColorStop(1, '#f00');
+ctx.fillStyle = g;
+ctx.translate(50, 25);
+ctx.scale(10, 10);
+ctx.fillRect(-5, -2.5, 10, 5);
+_assertPixel(canvas, 25,25, 0,255,0,255);
+_assertPixel(canvas, 50,25, 0,255,0,255);
+_assertPixel(canvas, 75,25, 0,255,0,255);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.radial.transform.2.html b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.radial.transform.2.html
new file mode 100644
index 0000000000..145c2923e9
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.radial.transform.2.html
@@ -0,0 +1,39 @@
+
+
+OffscreenCanvas test: 2d.gradient.radial.transform.2
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.gradient.radial.transform.2
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Radial gradient coordinates are relative to the coordinate space at the time of filling
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.radial.transform.2.worker.js b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.radial.transform.2.worker.js
new file mode 100644
index 0000000000..511b7f362a
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.radial.transform.2.worker.js
@@ -0,0 +1,35 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.gradient.radial.transform.2
+// Description:Radial gradient coordinates are relative to the coordinate space at the time of filling
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("Radial gradient coordinates are relative to the coordinate space at the time of filling");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+ctx.translate(100, 0);
+var g = ctx.createRadialGradient(0, 0, 0, 0, 0, 11.2);
+g.addColorStop(0, '#0f0');
+g.addColorStop(0.5, '#0f0');
+g.addColorStop(0.51, '#f00');
+g.addColorStop(1, '#f00');
+ctx.fillStyle = g;
+ctx.translate(-50, 25);
+ctx.scale(10, 10);
+ctx.fillRect(-5, -2.5, 10, 5);
+_assertPixel(canvas, 25,25, 0,255,0,255);
+_assertPixel(canvas, 50,25, 0,255,0,255);
+_assertPixel(canvas, 75,25, 0,255,0,255);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.radial.transform.3.html b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.radial.transform.3.html
new file mode 100644
index 0000000000..01d14cfbfc
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.radial.transform.3.html
@@ -0,0 +1,39 @@
+
+
+OffscreenCanvas test: 2d.gradient.radial.transform.3
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.gradient.radial.transform.3
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Radial gradient transforms do not experience broken caching effects
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.radial.transform.3.worker.js b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.radial.transform.3.worker.js
new file mode 100644
index 0000000000..b7bf68a979
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.radial.transform.3.worker.js
@@ -0,0 +1,35 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.gradient.radial.transform.3
+// Description:Radial gradient transforms do not experience broken caching effects
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("Radial gradient transforms do not experience broken caching effects");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+var g = ctx.createRadialGradient(0, 0, 0, 0, 0, 11.2);
+g.addColorStop(0, '#0f0');
+g.addColorStop(0.5, '#0f0');
+g.addColorStop(0.51, '#f00');
+g.addColorStop(1, '#f00');
+ctx.fillStyle = g;
+ctx.fillRect(0, 0, 100, 50);
+ctx.translate(50, 25);
+ctx.scale(10, 10);
+ctx.fillRect(-5, -2.5, 10, 5);
+_assertPixel(canvas, 25,25, 0,255,0,255);
+_assertPixel(canvas, 50,25, 0,255,0,255);
+_assertPixel(canvas, 75,25, 0,255,0,255);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.pattern.basic.canvas.html b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.pattern.basic.canvas.html
new file mode 100644
index 0000000000..80bb946660
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.pattern.basic.canvas.html
@@ -0,0 +1,44 @@
+
+
+OffscreenCanvas test: 2d.pattern.basic.canvas
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.pattern.basic.canvas
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.pattern.basic.canvas.worker.js b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.pattern.basic.canvas.worker.js
new file mode 100644
index 0000000000..a2608066ea
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.pattern.basic.canvas.worker.js
@@ -0,0 +1,40 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.pattern.basic.canvas
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+ctx.fillStyle = '#f00';
+ctx.fillRect(0, 0, 100, 50);
+var offscreenCanvas2 = new OffscreenCanvas(100, 50);
+var ctx2 = offscreenCanvas2.getContext('2d');
+ctx2.fillStyle = '#0f0';
+ctx2.fillRect(0, 0, 100, 50);
+var pattern = ctx.createPattern(offscreenCanvas2, 'no-repeat');
+ctx.fillStyle = pattern;
+ctx.fillRect(0, 0, 100, 50);
+_assertPixel(canvas, 1,1, 0,255,0,255);
+_assertPixel(canvas, 50,1, 0,255,0,255);
+_assertPixel(canvas, 98,1, 0,255,0,255);
+_assertPixel(canvas, 1,25, 0,255,0,255);
+_assertPixel(canvas, 50,25, 0,255,0,255);
+_assertPixel(canvas, 98,25, 0,255,0,255);
+_assertPixel(canvas, 1,48, 0,255,0,255);
+_assertPixel(canvas, 50,48, 0,255,0,255);
+_assertPixel(canvas, 98,48, 0,255,0,255);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.pattern.basic.image.html b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.pattern.basic.image.html
new file mode 100644
index 0000000000..965daccd3a
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.pattern.basic.image.html
@@ -0,0 +1,47 @@
+
+
+OffscreenCanvas test: 2d.pattern.basic.image
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.pattern.basic.image
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.pattern.basic.image.worker.js b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.pattern.basic.image.worker.js
new file mode 100644
index 0000000000..725df51307
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.pattern.basic.image.worker.js
@@ -0,0 +1,43 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.pattern.basic.image
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+ctx.fillStyle = '#f00';
+ctx.fillRect(0, 0, 100, 50);
+var promise = new Promise(function(resolve, reject) {
+    var xhr = new XMLHttpRequest();
+    xhr.open("GET", '/images/green.png');
+    xhr.responseType = 'blob';
+    xhr.send();
+    xhr.onload = function() {
+        resolve(xhr.response);
+    };
+});
+promise.then(function(response) {
+    createImageBitmap(response).then(bitmap => {
+        var pattern = ctx.createPattern(bitmap, 'no-repeat');
+        ctx.fillStyle = pattern;
+        ctx.fillRect(0, 0, 100, 50);
+        _assertPixel(canvas, 1,1, 0,255,0,255);
+        _assertPixel(canvas, 98,1, 0,255,0,255);
+        _assertPixel(canvas, 1,48, 0,255,0,255);
+        _assertPixel(canvas, 98,48, 0,255,0,255);
+    }, t_fail);
+}).then(t_pass, t_fail);
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.pattern.basic.nocontext.html b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.pattern.basic.nocontext.html
new file mode 100644
index 0000000000..50cd38ed0f
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.pattern.basic.nocontext.html
@@ -0,0 +1,37 @@
+
+
+OffscreenCanvas test: 2d.pattern.basic.nocontext
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.pattern.basic.nocontext
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.pattern.basic.nocontext.worker.js b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.pattern.basic.nocontext.worker.js
new file mode 100644
index 0000000000..8f33ec9d8d
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.pattern.basic.nocontext.worker.js
@@ -0,0 +1,33 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.pattern.basic.nocontext
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+var offscreenCanvas2 = new OffscreenCanvas(100, 50);
+var pattern = ctx.createPattern(offscreenCanvas2, 'no-repeat');
+ctx.fillStyle = '#0f0';
+ctx.fillRect(0, 0, 100, 50);
+ctx.fillStyle = '#f00';
+ctx.fillStyle = pattern;
+ctx.fillRect(0, 0, 100, 50);
+_assertPixel(canvas, 1,1, 0,255,0,255);
+_assertPixel(canvas, 98,1, 0,255,0,255);
+_assertPixel(canvas, 1,48, 0,255,0,255);
+_assertPixel(canvas, 98,48, 0,255,0,255);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.pattern.basic.zerocanvas.html b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.pattern.basic.zerocanvas.html
new file mode 100644
index 0000000000..5c395ab94e
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.pattern.basic.zerocanvas.html
@@ -0,0 +1,41 @@
+
+
+OffscreenCanvas test: 2d.pattern.basic.zerocanvas
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.pattern.basic.zerocanvas
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.pattern.basic.zerocanvas.worker.js b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.pattern.basic.zerocanvas.worker.js
new file mode 100644
index 0000000000..b02e3cc232
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.pattern.basic.zerocanvas.worker.js
@@ -0,0 +1,37 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.pattern.basic.zerocanvas
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+canvas.width = 0;
+canvas.height = 10;
+_assertSame(canvas.width, 0, "canvas.width", "0");
+_assertSame(canvas.height, 10, "canvas.height", "10");
+assert_throws_dom("INVALID_STATE_ERR", function() { ctx.createPattern(canvas, 'repeat'); });
+canvas.width = 10;
+canvas.height = 0;
+_assertSame(canvas.width, 10, "canvas.width", "10");
+_assertSame(canvas.height, 0, "canvas.height", "0");
+assert_throws_dom("INVALID_STATE_ERR", function() { ctx.createPattern(canvas, 'repeat'); });
+canvas.width = 0;
+canvas.height = 0;
+_assertSame(canvas.width, 0, "canvas.width", "0");
+_assertSame(canvas.height, 0, "canvas.height", "0");
+assert_throws_dom("INVALID_STATE_ERR", function() { ctx.createPattern(canvas, 'repeat'); });
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.pattern.crosscanvas.html b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.pattern.crosscanvas.html
new file mode 100644
index 0000000000..c6e0b36092
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.pattern.crosscanvas.html
@@ -0,0 +1,45 @@
+
+
+OffscreenCanvas test: 2d.pattern.crosscanvas
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.pattern.crosscanvas
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.pattern.crosscanvas.worker.js b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.pattern.crosscanvas.worker.js
new file mode 100644
index 0000000000..1a1d045ba6
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.pattern.crosscanvas.worker.js
@@ -0,0 +1,41 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.pattern.crosscanvas
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+var promise = new Promise(function(resolve, reject) {
+    var xhr = new XMLHttpRequest();
+    xhr.open("GET", '/images/green.png');
+    xhr.responseType = 'blob';
+    xhr.send();
+    xhr.onload = function() {
+        resolve(xhr.response);
+    };
+});
+promise.then(function(response) {
+    createImageBitmap(response).then(bitmap => {
+        var offscreenCanvas2 = new OffscreenCanvas(100, 50);
+        var pattern = offscreenCanvas2.getContext('2d').createPattern(bitmap, 'no-repeat');
+        ctx.fillStyle = '#f00';
+        ctx.fillRect(0, 0, 100, 50);
+        ctx.fillStyle = pattern;
+        ctx.fillRect(0, 0, 100, 50);
+        _assertPixel(canvas, 50,25, 0,255,0,255);
+    }, t_fail);
+}).then(t_pass, t_fail);
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.pattern.image.null.html b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.pattern.image.null.html
new file mode 100644
index 0000000000..e3ad03190d
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.pattern.image.null.html
@@ -0,0 +1,27 @@
+
+
+OffscreenCanvas test: 2d.pattern.image.null
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.pattern.image.null
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.pattern.image.null.worker.js b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.pattern.image.null.worker.js
new file mode 100644
index 0000000000..63dcb8f942
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.pattern.image.null.worker.js
@@ -0,0 +1,23 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.pattern.image.null
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+assert_throws_js(TypeError, function() { ctx.createPattern(null, 'repeat'); });
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.pattern.image.string.html b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.pattern.image.string.html
new file mode 100644
index 0000000000..ac202ee2a4
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.pattern.image.string.html
@@ -0,0 +1,27 @@
+
+
+OffscreenCanvas test: 2d.pattern.image.string
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.pattern.image.string
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.pattern.image.string.worker.js b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.pattern.image.string.worker.js
new file mode 100644
index 0000000000..c07e7d51ef
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.pattern.image.string.worker.js
@@ -0,0 +1,23 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.pattern.image.string
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+assert_throws_js(TypeError, function() { ctx.createPattern('../images/red.png', 'repeat'); });
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.pattern.image.undefined.html b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.pattern.image.undefined.html
new file mode 100644
index 0000000000..0593d41529
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.pattern.image.undefined.html
@@ -0,0 +1,27 @@
+
+
+OffscreenCanvas test: 2d.pattern.image.undefined
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.pattern.image.undefined
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.pattern.image.undefined.worker.js b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.pattern.image.undefined.worker.js
new file mode 100644
index 0000000000..1e94f39ea9
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.pattern.image.undefined.worker.js
@@ -0,0 +1,23 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.pattern.image.undefined
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+assert_throws_js(TypeError, function() { ctx.createPattern(undefined, 'repeat'); });
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.pattern.modify.canvas1.html b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.pattern.modify.canvas1.html
new file mode 100644
index 0000000000..4c27f26347
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.pattern.modify.canvas1.html
@@ -0,0 +1,39 @@
+
+
+OffscreenCanvas test: 2d.pattern.modify.canvas1
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.pattern.modify.canvas1
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.pattern.modify.canvas1.worker.js b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.pattern.modify.canvas1.worker.js
new file mode 100644
index 0000000000..c83755c984
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.pattern.modify.canvas1.worker.js
@@ -0,0 +1,35 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.pattern.modify.canvas1
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+var offscreenCanvas2 = new OffscreenCanvas(100, 50);
+var ctx2 = offscreenCanvas2.getContext('2d');
+ctx2.fillStyle = '#0f0';
+ctx2.fillRect(0, 0, 100, 50);
+var pattern = ctx.createPattern(offscreenCanvas2, 'no-repeat');
+ctx2.fillStyle = '#f00';
+ctx2.fillRect(0, 0, 100, 50);
+ctx.fillStyle = pattern;
+ctx.fillRect(0, 0, 100, 50);
+_assertPixel(canvas, 1,1, 0,255,0,255);
+_assertPixel(canvas, 98,1, 0,255,0,255);
+_assertPixel(canvas, 1,48, 0,255,0,255);
+_assertPixel(canvas, 98,48, 0,255,0,255);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.pattern.modify.canvas2.html b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.pattern.modify.canvas2.html
new file mode 100644
index 0000000000..08a6cd896e
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.pattern.modify.canvas2.html
@@ -0,0 +1,43 @@
+
+
+OffscreenCanvas test: 2d.pattern.modify.canvas2
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.pattern.modify.canvas2
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.pattern.modify.canvas2.worker.js b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.pattern.modify.canvas2.worker.js
new file mode 100644
index 0000000000..a49dd10213
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.pattern.modify.canvas2.worker.js
@@ -0,0 +1,39 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.pattern.modify.canvas2
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+var offscreenCanvas2 = new OffscreenCanvas(100, 50);
+var ctx2 = offscreenCanvas2.getContext('2d');
+ctx2.fillStyle = '#0f0';
+ctx2.fillRect(0, 0, 100, 50);
+var pattern = ctx.createPattern(offscreenCanvas2, 'no-repeat');
+ctx.fillStyle = pattern;
+ctx.fillRect(0, 0, 100, 50);
+ctx.fillStyle = '#f00';
+ctx.fillRect(0, 0, 100, 50);
+ctx2.fillStyle = '#f00';
+ctx2.fillRect(0, 0, 100, 50);
+ctx.fillStyle = pattern;
+ctx.fillRect(0, 0, 100, 50);
+_assertPixel(canvas, 1,1, 0,255,0,255);
+_assertPixel(canvas, 98,1, 0,255,0,255);
+_assertPixel(canvas, 1,48, 0,255,0,255);
+_assertPixel(canvas, 98,48, 0,255,0,255);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.pattern.paint.norepeat.basic.html b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.pattern.paint.norepeat.basic.html
new file mode 100644
index 0000000000..f5d9f5a558
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.pattern.paint.norepeat.basic.html
@@ -0,0 +1,47 @@
+
+
+OffscreenCanvas test: 2d.pattern.paint.norepeat.basic
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.pattern.paint.norepeat.basic
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.pattern.paint.norepeat.basic.worker.js b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.pattern.paint.norepeat.basic.worker.js
new file mode 100644
index 0000000000..82a49c331b
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.pattern.paint.norepeat.basic.worker.js
@@ -0,0 +1,43 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.pattern.paint.norepeat.basic
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+ctx.fillStyle = '#f00';
+ctx.fillRect(0, 0, 100, 50);
+var promise = new Promise(function(resolve, reject) {
+    var xhr = new XMLHttpRequest();
+    xhr.open("GET", '/images/green.png');
+    xhr.responseType = 'blob';
+    xhr.send();
+    xhr.onload = function() {
+        resolve(xhr.response);
+    };
+});
+promise.then(function(response) {
+    createImageBitmap(response).then(bitmap => {
+        var pattern = ctx.createPattern(bitmap, 'no-repeat');
+        ctx.fillStyle = pattern;
+        ctx.fillRect(0, 0, 100, 50);
+        _assertPixel(canvas, 1,1, 0,255,0,255);
+        _assertPixel(canvas, 98,1, 0,255,0,255);
+        _assertPixel(canvas, 1,48, 0,255,0,255);
+        _assertPixel(canvas, 98,48, 0,255,0,255);
+    }, t_fail);
+}).then(t_pass, t_fail);
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.pattern.paint.norepeat.coord1.html b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.pattern.paint.norepeat.coord1.html
new file mode 100644
index 0000000000..87158be57c
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.pattern.paint.norepeat.coord1.html
@@ -0,0 +1,50 @@
+
+
+OffscreenCanvas test: 2d.pattern.paint.norepeat.coord1
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.pattern.paint.norepeat.coord1
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.pattern.paint.norepeat.coord1.worker.js b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.pattern.paint.norepeat.coord1.worker.js
new file mode 100644
index 0000000000..731df50c00
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.pattern.paint.norepeat.coord1.worker.js
@@ -0,0 +1,46 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.pattern.paint.norepeat.coord1
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+ctx.fillStyle = '#0f0';
+ctx.fillRect(0, 0, 50, 50);
+ctx.fillStyle = '#f00';
+ctx.fillRect(50, 0, 50, 50);
+var promise = new Promise(function(resolve, reject) {
+    var xhr = new XMLHttpRequest();
+    xhr.open("GET", '/images/green.png');
+    xhr.responseType = 'blob';
+    xhr.send();
+    xhr.onload = function() {
+        resolve(xhr.response);
+    };
+});
+promise.then(function(response) {
+    createImageBitmap(response).then(bitmap => {
+        var pattern = ctx.createPattern(bitmap, 'no-repeat');
+        ctx.fillStyle = pattern;
+        ctx.translate(50, 0);
+        ctx.fillRect(-50, 0, 100, 50);
+        _assertPixel(canvas, 1,1, 0,255,0,255);
+        _assertPixel(canvas, 98,1, 0,255,0,255);
+        _assertPixel(canvas, 1,48, 0,255,0,255);
+        _assertPixel(canvas, 98,48, 0,255,0,255);
+    }, t_fail);
+}).then(t_pass, t_fail);
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.pattern.paint.norepeat.coord2.html b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.pattern.paint.norepeat.coord2.html
new file mode 100644
index 0000000000..a600e6ef57
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.pattern.paint.norepeat.coord2.html
@@ -0,0 +1,50 @@
+
+
+OffscreenCanvas test: 2d.pattern.paint.norepeat.coord2
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.pattern.paint.norepeat.coord2
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.pattern.paint.norepeat.coord2.worker.js b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.pattern.paint.norepeat.coord2.worker.js
new file mode 100644
index 0000000000..bd9c115f0d
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.pattern.paint.norepeat.coord2.worker.js
@@ -0,0 +1,46 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.pattern.paint.norepeat.coord2
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+var promise = new Promise(function(resolve, reject) {
+    var xhr = new XMLHttpRequest();
+    xhr.open("GET", '/images/green.png');
+    xhr.responseType = 'blob';
+    xhr.send();
+    xhr.onload = function() {
+        resolve(xhr.response);
+    };
+});
+promise.then(function(response) {
+    createImageBitmap(response).then(bitmap => {
+        var pattern = ctx.createPattern(bitmap, 'no-repeat');
+        ctx.fillStyle = pattern;
+        ctx.fillRect(0, 0, 50, 50);
+        ctx.fillStyle = '#f00';
+        ctx.fillRect(50, 0, 50, 50);
+        ctx.fillStyle = pattern;
+        ctx.translate(50, 0);
+        ctx.fillRect(-50, 0, 100, 50);
+        _assertPixel(canvas, 1,1, 0,255,0,255);
+        _assertPixel(canvas, 98,1, 0,255,0,255);
+        _assertPixel(canvas, 1,48, 0,255,0,255);
+        _assertPixel(canvas, 98,48, 0,255,0,255);
+    }, t_fail);
+}).then(t_pass, t_fail);
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.pattern.paint.norepeat.coord3.html b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.pattern.paint.norepeat.coord3.html
new file mode 100644
index 0000000000..c569d87705
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.pattern.paint.norepeat.coord3.html
@@ -0,0 +1,50 @@
+
+
+OffscreenCanvas test: 2d.pattern.paint.norepeat.coord3
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.pattern.paint.norepeat.coord3
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.pattern.paint.norepeat.coord3.worker.js b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.pattern.paint.norepeat.coord3.worker.js
new file mode 100644
index 0000000000..cf88ebab73
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.pattern.paint.norepeat.coord3.worker.js
@@ -0,0 +1,46 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.pattern.paint.norepeat.coord3
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+ctx.fillStyle = '#0f0';
+ctx.fillRect(0, 0, 100, 50);
+var promise = new Promise(function(resolve, reject) {
+    var xhr = new XMLHttpRequest();
+    xhr.open("GET", '/images/red.png');
+    xhr.responseType = 'blob';
+    xhr.send();
+    xhr.onload = function() {
+        resolve(xhr.response);
+    };
+});
+promise.then(function(response) {
+    createImageBitmap(response).then(bitmap => {
+        var pattern = ctx.createPattern(bitmap, 'no-repeat');
+        ctx.fillStyle = pattern;
+        ctx.translate(50, 25);
+        ctx.fillRect(-50, -25, 100, 50);
+        ctx.fillStyle = '#0f0';
+        ctx.fillRect(0, 0, 50, 25);
+        _assertPixel(canvas, 1,1, 0,255,0,255);
+        _assertPixel(canvas, 98,1, 0,255,0,255);
+        _assertPixel(canvas, 1,48, 0,255,0,255);
+        _assertPixel(canvas, 98,48, 0,255,0,255);
+    }, t_fail);
+}).then(t_pass, t_fail);
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.pattern.paint.norepeat.outside.html b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.pattern.paint.norepeat.outside.html
new file mode 100644
index 0000000000..4242375b03
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.pattern.paint.norepeat.outside.html
@@ -0,0 +1,52 @@
+
+
+OffscreenCanvas test: 2d.pattern.paint.norepeat.outside
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.pattern.paint.norepeat.outside
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.pattern.paint.norepeat.outside.worker.js b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.pattern.paint.norepeat.outside.worker.js
new file mode 100644
index 0000000000..85a6e43bd1
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.pattern.paint.norepeat.outside.worker.js
@@ -0,0 +1,48 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.pattern.paint.norepeat.outside
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+ctx.fillStyle = '#f00';
+ctx.fillRect(0, 0, 100, 50);
+var promise = new Promise(function(resolve, reject) {
+    var xhr = new XMLHttpRequest();
+    xhr.open("GET", '/images/red.png');
+    xhr.responseType = 'blob';
+    xhr.send();
+    xhr.onload = function() {
+        resolve(xhr.response);
+    };
+});
+promise.then(function(response) {
+    createImageBitmap(response).then(bitmap => {
+        var pattern = ctx.createPattern(bitmap, 'no-repeat');
+        ctx.fillStyle = '#0f0';
+        ctx.fillRect(0, 0, 100, 50);
+        ctx.fillStyle = pattern;
+        ctx.fillRect(0, -50, 100, 50);
+        ctx.fillRect(-100, 0, 100, 50);
+        ctx.fillRect(0, 50, 100, 50);
+        ctx.fillRect(100, 0, 100, 50);
+        _assertPixel(canvas, 1,1, 0,255,0,255);
+        _assertPixel(canvas, 98,1, 0,255,0,255);
+        _assertPixel(canvas, 1,48, 0,255,0,255);
+        _assertPixel(canvas, 98,48, 0,255,0,255);
+    }, t_fail);
+}).then(t_pass, t_fail);
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.pattern.paint.orientation.canvas.html b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.pattern.paint.orientation.canvas.html
new file mode 100644
index 0000000000..ccad92e529
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.pattern.paint.orientation.canvas.html
@@ -0,0 +1,43 @@
+
+
+OffscreenCanvas test: 2d.pattern.paint.orientation.canvas
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.pattern.paint.orientation.canvas
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Canvas patterns do not get flipped when painted
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.pattern.paint.orientation.canvas.worker.js b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.pattern.paint.orientation.canvas.worker.js
new file mode 100644
index 0000000000..38fa35f138
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.pattern.paint.orientation.canvas.worker.js
@@ -0,0 +1,39 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.pattern.paint.orientation.canvas
+// Description:Canvas patterns do not get flipped when painted
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("Canvas patterns do not get flipped when painted");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+ctx.fillStyle = '#f00';
+ctx.fillRect(0, 0, 100, 50);
+var offscreenCanvas2 = new OffscreenCanvas(100, 50);
+var ctx2 = offscreenCanvas2.getContext('2d');
+ctx2.fillStyle = '#f00';
+ctx2.fillRect(0, 0, 100, 25);
+ctx2.fillStyle = '#0f0';
+ctx2.fillRect(0, 25, 100, 25);
+var pattern = ctx.createPattern(offscreenCanvas2, 'no-repeat');
+ctx.fillStyle = pattern;
+ctx.fillRect(0, 0, 100, 50);
+ctx.fillStyle = '#0f0';
+ctx.fillRect(0, 0, 100, 25);
+_assertPixel(canvas, 1,1, 0,255,0,255);
+_assertPixel(canvas, 98,1, 0,255,0,255);
+_assertPixel(canvas, 1,48, 0,255,0,255);
+_assertPixel(canvas, 98,48, 0,255,0,255);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.pattern.paint.orientation.image.html b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.pattern.paint.orientation.image.html
new file mode 100644
index 0000000000..377cc58685
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.pattern.paint.orientation.image.html
@@ -0,0 +1,52 @@
+
+
+OffscreenCanvas test: 2d.pattern.paint.orientation.image
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.pattern.paint.orientation.image
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Image patterns do not get flipped when painted
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.pattern.paint.orientation.image.worker.js b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.pattern.paint.orientation.image.worker.js
new file mode 100644
index 0000000000..fccfe70426
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.pattern.paint.orientation.image.worker.js
@@ -0,0 +1,48 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.pattern.paint.orientation.image
+// Description:Image patterns do not get flipped when painted
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("Image patterns do not get flipped when painted");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+ctx.fillStyle = '#f00';
+ctx.fillRect(0, 0, 100, 50);
+var promise = new Promise(function(resolve, reject) {
+    var xhr = new XMLHttpRequest();
+    xhr.open("GET", '/images/rrgg-256x256.png');
+    xhr.responseType = 'blob';
+    xhr.send();
+    xhr.onload = function() {
+        resolve(xhr.response);
+    };
+});
+promise.then(function(response) {
+    createImageBitmap(response).then(bitmap => {
+        var pattern = ctx.createPattern(bitmap, 'no-repeat');
+        ctx.fillStyle = pattern;
+        ctx.save();
+        ctx.translate(0, -103);
+        ctx.fillRect(0, 103, 100, 50);
+        ctx.restore();
+        ctx.fillStyle = '#0f0';
+        ctx.fillRect(0, 0, 100, 25);
+        _assertPixel(canvas, 1,1, 0,255,0,255);
+        _assertPixel(canvas, 98,1, 0,255,0,255);
+        _assertPixel(canvas, 1,48, 0,255,0,255);
+        _assertPixel(canvas, 98,48, 0,255,0,255);
+    }, t_fail);
+}).then(t_pass, t_fail);
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.pattern.paint.repeat.basic.html b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.pattern.paint.repeat.basic.html
new file mode 100644
index 0000000000..b5613c3798
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.pattern.paint.repeat.basic.html
@@ -0,0 +1,47 @@
+
+
+OffscreenCanvas test: 2d.pattern.paint.repeat.basic
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.pattern.paint.repeat.basic
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.pattern.paint.repeat.basic.worker.js b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.pattern.paint.repeat.basic.worker.js
new file mode 100644
index 0000000000..1f09d297f9
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.pattern.paint.repeat.basic.worker.js
@@ -0,0 +1,43 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.pattern.paint.repeat.basic
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+ctx.fillStyle = '#f00';
+ctx.fillRect(0, 0, 100, 50);
+var promise = new Promise(function(resolve, reject) {
+    var xhr = new XMLHttpRequest();
+    xhr.open("GET", '/images/green-16x16.png');
+    xhr.responseType = 'blob';
+    xhr.send();
+    xhr.onload = function() {
+        resolve(xhr.response);
+    };
+});
+promise.then(function(response) {
+    createImageBitmap(response).then(bitmap => {
+        var pattern = ctx.createPattern(bitmap, 'no-repeat');
+        ctx.fillStyle = pattern;
+        ctx.fillRect(0, 0, 100, 50);
+        _assertPixel(canvas, 1,1, 0,255,0,255);
+        _assertPixel(canvas, 98,1, 0,255,0,255);
+        _assertPixel(canvas, 1,48, 0,255,0,255);
+        _assertPixel(canvas, 98,48, 0,255,0,255);
+    }, t_fail);
+}).then(t_pass, t_fail);
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.pattern.paint.repeat.coord1.html b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.pattern.paint.repeat.coord1.html
new file mode 100644
index 0000000000..a4b2bbdd7d
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.pattern.paint.repeat.coord1.html
@@ -0,0 +1,48 @@
+
+
+OffscreenCanvas test: 2d.pattern.paint.repeat.coord1
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.pattern.paint.repeat.coord1
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.pattern.paint.repeat.coord1.worker.js b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.pattern.paint.repeat.coord1.worker.js
new file mode 100644
index 0000000000..ea064ea327
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.pattern.paint.repeat.coord1.worker.js
@@ -0,0 +1,44 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.pattern.paint.repeat.coord1
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+ctx.fillStyle = '#f00';
+ctx.fillRect(0, 0, 100, 50);
+var promise = new Promise(function(resolve, reject) {
+    var xhr = new XMLHttpRequest();
+    xhr.open("GET", '/images/rgrg-256x256.png');
+    xhr.responseType = 'blob';
+    xhr.send();
+    xhr.onload = function() {
+        resolve(xhr.response);
+    };
+});
+promise.then(function(response) {
+    createImageBitmap(response).then(bitmap => {
+        var pattern = ctx.createPattern(bitmap, 'no-repeat');
+        ctx.fillStyle = pattern;
+        ctx.translate(-128, -78);
+        ctx.fillRect(128, 78, 100, 50);
+        _assertPixel(canvas, 1,1, 0,255,0,255);
+        _assertPixel(canvas, 98,1, 0,255,0,255);
+        _assertPixel(canvas, 1,48, 0,255,0,255);
+        _assertPixel(canvas, 98,48, 0,255,0,255);
+    }, t_fail);
+}).then(t_pass, t_fail);
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.pattern.paint.repeat.coord2.html b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.pattern.paint.repeat.coord2.html
new file mode 100644
index 0000000000..52449506a7
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.pattern.paint.repeat.coord2.html
@@ -0,0 +1,45 @@
+
+
+OffscreenCanvas test: 2d.pattern.paint.repeat.coord2
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.pattern.paint.repeat.coord2
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.pattern.paint.repeat.coord2.worker.js b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.pattern.paint.repeat.coord2.worker.js
new file mode 100644
index 0000000000..29c6f8f006
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.pattern.paint.repeat.coord2.worker.js
@@ -0,0 +1,41 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.pattern.paint.repeat.coord2
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+var promise = new Promise(function(resolve, reject) {
+    var xhr = new XMLHttpRequest();
+    xhr.open("GET", '/images/grgr-256x256.png');
+    xhr.responseType = 'blob';
+    xhr.send();
+    xhr.onload = function() {
+        resolve(xhr.response);
+    };
+});
+promise.then(function(response) {
+    createImageBitmap(response).then(bitmap => {
+        var pattern = ctx.createPattern(bitmap, 'no-repeat');
+        ctx.fillStyle = pattern;
+        ctx.fillRect(0, 0, 100, 50);
+        _assertPixel(canvas, 1,1, 0,255,0,255);
+        _assertPixel(canvas, 98,1, 0,255,0,255);
+        _assertPixel(canvas, 1,48, 0,255,0,255);
+        _assertPixel(canvas, 98,48, 0,255,0,255);
+    }, t_fail);
+}).then(t_pass, t_fail);
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.pattern.paint.repeat.coord3.html b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.pattern.paint.repeat.coord3.html
new file mode 100644
index 0000000000..d01acb8a6d
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.pattern.paint.repeat.coord3.html
@@ -0,0 +1,47 @@
+
+
+OffscreenCanvas test: 2d.pattern.paint.repeat.coord3
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.pattern.paint.repeat.coord3
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.pattern.paint.repeat.coord3.worker.js b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.pattern.paint.repeat.coord3.worker.js
new file mode 100644
index 0000000000..91c14f98dc
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.pattern.paint.repeat.coord3.worker.js
@@ -0,0 +1,43 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.pattern.paint.repeat.coord3
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+var promise = new Promise(function(resolve, reject) {
+    var xhr = new XMLHttpRequest();
+    xhr.open("GET", '/images/rgrg-256x256.png');
+    xhr.responseType = 'blob';
+    xhr.send();
+    xhr.onload = function() {
+        resolve(xhr.response);
+    };
+});
+promise.then(function(response) {
+    createImageBitmap(response).then(bitmap => {
+        var pattern = ctx.createPattern(bitmap, 'no-repeat');
+        ctx.fillStyle = pattern;
+        ctx.fillRect(0, 0, 100, 50);
+        ctx.translate(-128, -78);
+        ctx.fillRect(128, 78, 100, 50);
+        _assertPixel(canvas, 1,1, 0,255,0,255);
+        _assertPixel(canvas, 98,1, 0,255,0,255);
+        _assertPixel(canvas, 1,48, 0,255,0,255);
+        _assertPixel(canvas, 98,48, 0,255,0,255);
+    }, t_fail);
+}).then(t_pass, t_fail);
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.pattern.paint.repeat.outside.html b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.pattern.paint.repeat.outside.html
new file mode 100644
index 0000000000..2c91f1d736
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.pattern.paint.repeat.outside.html
@@ -0,0 +1,48 @@
+
+
+OffscreenCanvas test: 2d.pattern.paint.repeat.outside
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.pattern.paint.repeat.outside
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.pattern.paint.repeat.outside.worker.js b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.pattern.paint.repeat.outside.worker.js
new file mode 100644
index 0000000000..147eadf8e7
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.pattern.paint.repeat.outside.worker.js
@@ -0,0 +1,44 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.pattern.paint.repeat.outside
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+ctx.fillStyle = '#f00';
+ctx.fillRect(0, 0, 100, 50);
+var promise = new Promise(function(resolve, reject) {
+    var xhr = new XMLHttpRequest();
+    xhr.open("GET", '/images/green-16x16.png');
+    xhr.responseType = 'blob';
+    xhr.send();
+    xhr.onload = function() {
+        resolve(xhr.response);
+    };
+});
+promise.then(function(response) {
+    createImageBitmap(response).then(bitmap => {
+        var pattern = ctx.createPattern(bitmap, 'no-repeat');
+        ctx.fillStyle = pattern;
+        ctx.translate(50, 25);
+        ctx.fillRect(-50, -25, 100, 50);
+        _assertPixel(canvas, 1,1, 0,255,0,255);
+        _assertPixel(canvas, 98,1, 0,255,0,255);
+        _assertPixel(canvas, 1,48, 0,255,0,255);
+        _assertPixel(canvas, 98,48, 0,255,0,255);
+    }, t_fail);
+}).then(t_pass, t_fail);
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.pattern.paint.repeatx.basic.html b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.pattern.paint.repeatx.basic.html
new file mode 100644
index 0000000000..ed7cee297d
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.pattern.paint.repeatx.basic.html
@@ -0,0 +1,49 @@
+
+
+OffscreenCanvas test: 2d.pattern.paint.repeatx.basic
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.pattern.paint.repeatx.basic
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.pattern.paint.repeatx.basic.worker.js b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.pattern.paint.repeatx.basic.worker.js
new file mode 100644
index 0000000000..d7efcfa1e1
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.pattern.paint.repeatx.basic.worker.js
@@ -0,0 +1,45 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.pattern.paint.repeatx.basic
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+ctx.fillStyle = '#0f0';
+ctx.fillRect(0, 0, 100, 50);
+ctx.fillStyle = '#f00';
+ctx.fillRect(0, 0, 100, 16);
+var promise = new Promise(function(resolve, reject) {
+    var xhr = new XMLHttpRequest();
+    xhr.open("GET", '/images/green-16x16.png');
+    xhr.responseType = 'blob';
+    xhr.send();
+    xhr.onload = function() {
+        resolve(xhr.response);
+    };
+});
+promise.then(function(response) {
+    createImageBitmap(response).then(bitmap => {
+        var pattern = ctx.createPattern(bitmap, 'repeat-x');
+        ctx.fillStyle = pattern;
+        ctx.fillRect(0, 0, 100, 50);
+        _assertPixel(canvas, 1,1, 0,255,0,255);
+        _assertPixel(canvas, 98,1, 0,255,0,255);
+        _assertPixel(canvas, 1,48, 0,255,0,255);
+        _assertPixel(canvas, 98,48, 0,255,0,255);
+    }, t_fail);
+}).then(t_pass, t_fail);
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.pattern.paint.repeatx.coord1.html b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.pattern.paint.repeatx.coord1.html
new file mode 100644
index 0000000000..342ce06aad
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.pattern.paint.repeatx.coord1.html
@@ -0,0 +1,52 @@
+
+
+OffscreenCanvas test: 2d.pattern.paint.repeatx.coord1
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.pattern.paint.repeatx.coord1
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.pattern.paint.repeatx.coord1.worker.js b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.pattern.paint.repeatx.coord1.worker.js
new file mode 100644
index 0000000000..351092befd
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.pattern.paint.repeatx.coord1.worker.js
@@ -0,0 +1,48 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.pattern.paint.repeatx.coord1
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+ctx.fillStyle = '#0f0';
+ctx.fillRect(0, 0, 100, 50);
+var promise = new Promise(function(resolve, reject) {
+    var xhr = new XMLHttpRequest();
+    xhr.open("GET", '/images/red-16x16.png');
+    xhr.responseType = 'blob';
+    xhr.send();
+    xhr.onload = function() {
+        resolve(xhr.response);
+    };
+});
+promise.then(function(response) {
+    createImageBitmap(response).then(bitmap => {
+        var pattern = ctx.createPattern(bitmap, 'repeat-x');
+        ctx.fillStyle = pattern;
+        ctx.translate(0, 16);
+        ctx.fillRect(0, -16, 100, 50);
+        ctx.fillStyle = '#0f0';
+        ctx.fillRect(0, 0, 100, 16);
+        _assertPixel(canvas, 1,1, 0,255,0,255);
+        _assertPixel(canvas, 98,1, 0,255,0,255);
+        _assertPixel(canvas, 1,25, 0,255,0,255);
+        _assertPixel(canvas, 98,25, 0,255,0,255);
+        _assertPixel(canvas, 1,48, 0,255,0,255);
+        _assertPixel(canvas, 98,48, 0,255,0,255);
+    }, t_fail);
+}).then(t_pass, t_fail);
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.pattern.paint.repeatx.outside.html b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.pattern.paint.repeatx.outside.html
new file mode 100644
index 0000000000..ad4a4a2461
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.pattern.paint.repeatx.outside.html
@@ -0,0 +1,49 @@
+
+
+OffscreenCanvas test: 2d.pattern.paint.repeatx.outside
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.pattern.paint.repeatx.outside
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.pattern.paint.repeatx.outside.worker.js b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.pattern.paint.repeatx.outside.worker.js
new file mode 100644
index 0000000000..0e031109f2
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.pattern.paint.repeatx.outside.worker.js
@@ -0,0 +1,45 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.pattern.paint.repeatx.outside
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+ctx.fillStyle = '#0f0';
+ctx.fillRect(0, 0, 100, 50);
+var promise = new Promise(function(resolve, reject) {
+    var xhr = new XMLHttpRequest();
+    xhr.open("GET", '/images/red-16x16.png');
+    xhr.responseType = 'blob';
+    xhr.send();
+    xhr.onload = function() {
+        resolve(xhr.response);
+    };
+});
+promise.then(function(response) {
+    createImageBitmap(response).then(bitmap => {
+        var pattern = ctx.createPattern(bitmap, 'repeat-x');
+        ctx.fillStyle = pattern;
+        ctx.fillRect(0, 0, 100, 50);
+        ctx.fillStyle = '#0f0';
+        ctx.fillRect(0, 0, 100, 16);
+        _assertPixel(canvas, 1,1, 0,255,0,255);
+        _assertPixel(canvas, 98,1, 0,255,0,255);
+        _assertPixel(canvas, 1,48, 0,255,0,255);
+        _assertPixel(canvas, 98,48, 0,255,0,255);
+    }, t_fail);
+}).then(t_pass, t_fail);
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.pattern.paint.repeaty.basic.html b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.pattern.paint.repeaty.basic.html
new file mode 100644
index 0000000000..6069902498
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.pattern.paint.repeaty.basic.html
@@ -0,0 +1,49 @@
+
+
+OffscreenCanvas test: 2d.pattern.paint.repeaty.basic
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.pattern.paint.repeaty.basic
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.pattern.paint.repeaty.basic.worker.js b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.pattern.paint.repeaty.basic.worker.js
new file mode 100644
index 0000000000..09e9b02394
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.pattern.paint.repeaty.basic.worker.js
@@ -0,0 +1,45 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.pattern.paint.repeaty.basic
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+ctx.fillStyle = '#0f0';
+ctx.fillRect(0, 0, 100, 50);
+ctx.fillStyle = '#f00';
+ctx.fillRect(0, 0, 16, 50);
+var promise = new Promise(function(resolve, reject) {
+    var xhr = new XMLHttpRequest();
+    xhr.open("GET", '/images/green-16x16.png');
+    xhr.responseType = 'blob';
+    xhr.send();
+    xhr.onload = function() {
+        resolve(xhr.response);
+    };
+});
+promise.then(function(response) {
+    createImageBitmap(response).then(bitmap => {
+        var pattern = ctx.createPattern(bitmap, 'repeat-y');
+        ctx.fillStyle = pattern;
+        ctx.fillRect(0, 0, 100, 50);
+        _assertPixel(canvas, 1,1, 0,255,0,255);
+        _assertPixel(canvas, 98,1, 0,255,0,255);
+        _assertPixel(canvas, 1,48, 0,255,0,255);
+        _assertPixel(canvas, 98,48, 0,255,0,255);
+    }, t_fail);
+}).then(t_pass, t_fail);
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.pattern.paint.repeaty.coord1.html b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.pattern.paint.repeaty.coord1.html
new file mode 100644
index 0000000000..fd1cca2e95
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.pattern.paint.repeaty.coord1.html
@@ -0,0 +1,52 @@
+
+
+OffscreenCanvas test: 2d.pattern.paint.repeaty.coord1
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.pattern.paint.repeaty.coord1
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.pattern.paint.repeaty.coord1.worker.js b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.pattern.paint.repeaty.coord1.worker.js
new file mode 100644
index 0000000000..1701d3cc76
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.pattern.paint.repeaty.coord1.worker.js
@@ -0,0 +1,48 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.pattern.paint.repeaty.coord1
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+ctx.fillStyle = '#0f0';
+ctx.fillRect(0, 0, 100, 50);
+var promise = new Promise(function(resolve, reject) {
+    var xhr = new XMLHttpRequest();
+    xhr.open("GET", '/images/red-16x16.png');
+    xhr.responseType = 'blob';
+    xhr.send();
+    xhr.onload = function() {
+        resolve(xhr.response);
+    };
+});
+promise.then(function(response) {
+    createImageBitmap(response).then(bitmap => {
+        var pattern = ctx.createPattern(bitmap, 'repeat-y');
+        ctx.fillStyle = pattern;
+        ctx.translate(48, 0);
+        ctx.fillRect(-48, 0, 100, 50);
+        ctx.fillStyle = '#0f0';
+        ctx.fillRect(0, 0, 16, 50);
+        _assertPixel(canvas, 1,1, 0,255,0,255);
+        _assertPixel(canvas, 50,1, 0,255,0,255);
+        _assertPixel(canvas, 98,1, 0,255,0,255);
+        _assertPixel(canvas, 1,48, 0,255,0,255);
+        _assertPixel(canvas, 50,48, 0,255,0,255);
+        _assertPixel(canvas, 98,48, 0,255,0,255);
+    }, t_fail);
+}).then(t_pass, t_fail);
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.pattern.paint.repeaty.outside.html b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.pattern.paint.repeaty.outside.html
new file mode 100644
index 0000000000..b7fbd9eb87
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.pattern.paint.repeaty.outside.html
@@ -0,0 +1,49 @@
+
+
+OffscreenCanvas test: 2d.pattern.paint.repeaty.outside
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.pattern.paint.repeaty.outside
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.pattern.paint.repeaty.outside.worker.js b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.pattern.paint.repeaty.outside.worker.js
new file mode 100644
index 0000000000..7242c8ff48
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.pattern.paint.repeaty.outside.worker.js
@@ -0,0 +1,45 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.pattern.paint.repeaty.outside
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+ctx.fillStyle = '#0f0';
+ctx.fillRect(0, 0, 100, 50);
+var promise = new Promise(function(resolve, reject) {
+    var xhr = new XMLHttpRequest();
+    xhr.open("GET", '/images/red-16x16.png');
+    xhr.responseType = 'blob';
+    xhr.send();
+    xhr.onload = function() {
+        resolve(xhr.response);
+    };
+});
+promise.then(function(response) {
+    createImageBitmap(response).then(bitmap => {
+        var pattern = ctx.createPattern(bitmap, 'repeat-y');
+        ctx.fillStyle = pattern;
+        ctx.fillRect(0, 0, 100, 50);
+        ctx.fillStyle = '#0f0';
+        ctx.fillRect(0, 0, 16, 50);
+        _assertPixel(canvas, 1,1, 0,255,0,255);
+        _assertPixel(canvas, 98,1, 0,255,0,255);
+        _assertPixel(canvas, 1,48, 0,255,0,255);
+        _assertPixel(canvas, 98,48, 0,255,0,255);
+    }, t_fail);
+}).then(t_pass, t_fail);
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.pattern.repeat.case.html b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.pattern.repeat.case.html
new file mode 100644
index 0000000000..5251f93c8f
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.pattern.repeat.case.html
@@ -0,0 +1,27 @@
+
+
+OffscreenCanvas test: 2d.pattern.repeat.case
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.pattern.repeat.case
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.pattern.repeat.case.worker.js b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.pattern.repeat.case.worker.js
new file mode 100644
index 0000000000..6a7dd8d6dd
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.pattern.repeat.case.worker.js
@@ -0,0 +1,23 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.pattern.repeat.case
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+assert_throws_dom("SYNTAX_ERR", function() { ctx.createPattern(canvas, "Repeat"); });
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.pattern.repeat.empty.html b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.pattern.repeat.empty.html
new file mode 100644
index 0000000000..76e54e9616
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.pattern.repeat.empty.html
@@ -0,0 +1,47 @@
+
+
+OffscreenCanvas test: 2d.pattern.repeat.empty
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.pattern.repeat.empty
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.pattern.repeat.empty.worker.js b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.pattern.repeat.empty.worker.js
new file mode 100644
index 0000000000..e3048881e3
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.pattern.repeat.empty.worker.js
@@ -0,0 +1,43 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.pattern.repeat.empty
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+ctx.fillStyle = '#f00';
+ctx.fillRect(0, 0, 100, 50);
+var promise = new Promise(function(resolve, reject) {
+    var xhr = new XMLHttpRequest();
+    xhr.open("GET", '/images/green-1x1.png');
+    xhr.responseType = 'blob';
+    xhr.send();
+    xhr.onload = function() {
+        resolve(xhr.response);
+    };
+});
+promise.then(function(response) {
+    createImageBitmap(response).then(bitmap => {
+        var pattern = ctx.createPattern(bitmap, "");
+        ctx.fillStyle = pattern;
+        ctx.fillRect(0, 0, 200, 50);
+        _assertPixel(canvas, 1,1, 0,255,0,255);
+        _assertPixel(canvas, 98,1, 0,255,0,255);
+        _assertPixel(canvas, 1,48, 0,255,0,255);
+        _assertPixel(canvas, 98,48, 0,255,0,255);
+    }, t_fail);
+}).then(t_pass, t_fail);
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.pattern.repeat.null.html b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.pattern.repeat.null.html
new file mode 100644
index 0000000000..0e97c7aa67
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.pattern.repeat.null.html
@@ -0,0 +1,27 @@
+
+
+OffscreenCanvas test: 2d.pattern.repeat.null
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.pattern.repeat.null
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.pattern.repeat.null.worker.js b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.pattern.repeat.null.worker.js
new file mode 100644
index 0000000000..57353f338c
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.pattern.repeat.null.worker.js
@@ -0,0 +1,23 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.pattern.repeat.null
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+_assert(ctx.createPattern(canvas, null) != null, "ctx.createPattern(canvas, null) != null");
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.pattern.repeat.nullsuffix.html b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.pattern.repeat.nullsuffix.html
new file mode 100644
index 0000000000..d5166d750b
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.pattern.repeat.nullsuffix.html
@@ -0,0 +1,27 @@
+
+
+OffscreenCanvas test: 2d.pattern.repeat.nullsuffix
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.pattern.repeat.nullsuffix
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.pattern.repeat.nullsuffix.worker.js b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.pattern.repeat.nullsuffix.worker.js
new file mode 100644
index 0000000000..baafd4b43a
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.pattern.repeat.nullsuffix.worker.js
@@ -0,0 +1,23 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.pattern.repeat.nullsuffix
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+assert_throws_dom("SYNTAX_ERR", function() { ctx.createPattern(canvas, "repeat\0"); });
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.pattern.repeat.undefined.html b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.pattern.repeat.undefined.html
new file mode 100644
index 0000000000..731ef86f83
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.pattern.repeat.undefined.html
@@ -0,0 +1,27 @@
+
+
+OffscreenCanvas test: 2d.pattern.repeat.undefined
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.pattern.repeat.undefined
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.pattern.repeat.undefined.worker.js b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.pattern.repeat.undefined.worker.js
new file mode 100644
index 0000000000..1474ac43dc
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.pattern.repeat.undefined.worker.js
@@ -0,0 +1,23 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.pattern.repeat.undefined
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+assert_throws_dom("SYNTAX_ERR", function() { ctx.createPattern(canvas, undefined); });
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.pattern.repeat.unrecognised.html b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.pattern.repeat.unrecognised.html
new file mode 100644
index 0000000000..793ed67a7c
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.pattern.repeat.unrecognised.html
@@ -0,0 +1,27 @@
+
+
+OffscreenCanvas test: 2d.pattern.repeat.unrecognised
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.pattern.repeat.unrecognised
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.pattern.repeat.unrecognised.worker.js b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.pattern.repeat.unrecognised.worker.js
new file mode 100644
index 0000000000..076cba562c
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.pattern.repeat.unrecognised.worker.js
@@ -0,0 +1,23 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.pattern.repeat.unrecognised
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+assert_throws_dom("SYNTAX_ERR", function() { ctx.createPattern(canvas, "invalid"); });
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.pattern.repeat.unrecognisednull.html b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.pattern.repeat.unrecognisednull.html
new file mode 100644
index 0000000000..59a0be4296
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.pattern.repeat.unrecognisednull.html
@@ -0,0 +1,27 @@
+
+
+OffscreenCanvas test: 2d.pattern.repeat.unrecognisednull
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.pattern.repeat.unrecognisednull
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.pattern.repeat.unrecognisednull.worker.js b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.pattern.repeat.unrecognisednull.worker.js
new file mode 100644
index 0000000000..0adfe9bf41
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.pattern.repeat.unrecognisednull.worker.js
@@ -0,0 +1,23 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.pattern.repeat.unrecognisednull
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+assert_throws_dom("SYNTAX_ERR", function() { ctx.createPattern(canvas, "null"); });
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.strokeStyle.default.html b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.strokeStyle.default.html
new file mode 100644
index 0000000000..70524cb6d9
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.strokeStyle.default.html
@@ -0,0 +1,27 @@
+
+
+OffscreenCanvas test: 2d.strokeStyle.default
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.strokeStyle.default
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.strokeStyle.default.worker.js b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.strokeStyle.default.worker.js
new file mode 100644
index 0000000000..0d72f35264
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.strokeStyle.default.worker.js
@@ -0,0 +1,23 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.strokeStyle.default
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+_assertSame(ctx.strokeStyle, '#000000', "ctx.strokeStyle", "'#000000'");
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/filters/2d.filter.canvasFilterObject.blur.exceptions.tentative.html b/testing/web-platform/tests/html/canvas/offscreen/filters/2d.filter.canvasFilterObject.blur.exceptions.tentative.html
new file mode 100644
index 0000000000..63f23bc1f7
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/filters/2d.filter.canvasFilterObject.blur.exceptions.tentative.html
@@ -0,0 +1,32 @@
+
+
+OffscreenCanvas test: 2d.filter.canvasFilterObject.blur.exceptions.tentative
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.filter.canvasFilterObject.blur.exceptions.tentative
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Test exceptions on CanvasFilter() blur.object
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/filters/2d.filter.canvasFilterObject.blur.exceptions.tentative.worker.js b/testing/web-platform/tests/html/canvas/offscreen/filters/2d.filter.canvasFilterObject.blur.exceptions.tentative.worker.js
new file mode 100644
index 0000000000..9a2baad6ab
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/filters/2d.filter.canvasFilterObject.blur.exceptions.tentative.worker.js
@@ -0,0 +1,27 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.filter.canvasFilterObject.blur.exceptions.tentative
+// Description:Test exceptions on CanvasFilter() blur.object
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("Test exceptions on CanvasFilter() blur.object");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  assert_throws_js(TypeError, function() { ctx.filter = new CanvasFilter({filter: 'gaussianBlur'}); });
+  assert_throws_js(TypeError, function() { ctx.filter = new CanvasFilter({filter: 'gaussianBlur', stdDeviation: undefined}); });
+  assert_throws_js(TypeError, function() { ctx.filter = new CanvasFilter({filter: 'gaussianBlur', stdDeviation: 'foo'}); });
+  assert_throws_js(TypeError, function() { ctx.filter = new CanvasFilter({filter: 'gaussianBlur', stdDeviation: [1,2]}); });
+  assert_throws_js(TypeError, function() { ctx.filter = new CanvasFilter({filter: 'gaussianBlur', stdDeviation: NaN}); });
+  assert_throws_js(TypeError, function() { ctx.filter = new CanvasFilter({filter: 'gaussianBlur', stdDeviation: {}}); });
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/filters/2d.filter.canvasFilterObject.colorMatrix.tentative.html b/testing/web-platform/tests/html/canvas/offscreen/filters/2d.filter.canvasFilterObject.colorMatrix.tentative.html
new file mode 100644
index 0000000000..778d9fb2f8
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/filters/2d.filter.canvasFilterObject.colorMatrix.tentative.html
@@ -0,0 +1,69 @@
+
+
+OffscreenCanvas test: 2d.filter.canvasFilterObject.colorMatrix.tentative
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.filter.canvasFilterObject.colorMatrix.tentative
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Test the functionality of ColorMatrix filters in CanvasFilter objects
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/filters/2d.filter.canvasFilterObject.colorMatrix.tentative.worker.js b/testing/web-platform/tests/html/canvas/offscreen/filters/2d.filter.canvasFilterObject.colorMatrix.tentative.worker.js
new file mode 100644
index 0000000000..ff5a671130
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/filters/2d.filter.canvasFilterObject.colorMatrix.tentative.worker.js
@@ -0,0 +1,64 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.filter.canvasFilterObject.colorMatrix.tentative
+// Description:Test the functionality of ColorMatrix filters in CanvasFilter objects
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("Test the functionality of ColorMatrix filters in CanvasFilter objects");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  assert_throws_js(TypeError, function() { new CanvasFilter({filter: 'colorMatrix', values: undefined}); });
+  assert_throws_js(TypeError, function() { new CanvasFilter({filter: 'colorMatrix', values: 'foo'}); });
+  assert_throws_js(TypeError, function() { new CanvasFilter({filter: 'colorMatrix', values: null}); });
+  assert_throws_js(TypeError, function() { new CanvasFilter({filter: 'colorMatrix', values: [1, 2, 3]}); });
+  assert_throws_js(TypeError, function() { new CanvasFilter({filter: 'colorMatrix', values: [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 'a']}); });
+  assert_throws_js(TypeError, function() { new CanvasFilter({filter: 'colorMatrix', values: [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, Infinity]}); });
+  ctx.fillStyle = '#f00';
+  ctx.filter = new CanvasFilter({filter: 'colorMatrix', type: 'hueRotate', values: 0});
+  ctx.fillRect(0, 0, 100, 50);
+  _assertPixelApprox(canvas, 10,10, 255,0,0,255, 2);
+  ctx.filter = new CanvasFilter({filter: 'colorMatrix', type: 'hueRotate', values: 90});
+  ctx.fillRect(0, 0, 100, 50);
+  _assertPixelApprox(canvas, 10,10, 0,91,0,255, 2);
+  ctx.filter = new CanvasFilter({filter: 'colorMatrix', type: 'hueRotate', values: 180});
+  ctx.fillRect(0, 0, 100, 50);
+  _assertPixelApprox(canvas, 10,10, 0,109,109,255, 2);
+  ctx.filter = new CanvasFilter({filter: 'colorMatrix', type: 'hueRotate', values: 270});
+  ctx.fillRect(0, 0, 100, 50);
+  _assertPixelApprox(canvas, 10,10, 109,18,255,255, 2);
+  ctx.filter = new CanvasFilter({filter: 'colorMatrix', type: 'saturate', values: 0.5});
+  ctx.fillRect(0, 0, 100, 50);
+  _assertPixelApprox(canvas, 10,10, 155,27,27,255, 2);
+  ctx.clearRect(0, 0, 100, 50);
+  ctx.filter = new CanvasFilter({filter: 'colorMatrix', type: 'luminanceToAlpha'});
+  ctx.fillRect(0, 0, 100, 50);
+  _assertPixelApprox(canvas, 10,10, 0,0,0,54, 2);
+  ctx.filter = new CanvasFilter({filter: 'colorMatrix', values: [
+          0, 0, 0, 0, 0,
+          1, 1, 1, 1, 0,
+          0, 0, 0, 0, 0,
+          0, 0, 0, 1, 0
+  ]});
+  ctx.fillRect(0, 0, 50, 25);
+  ctx.fillStyle = '#0f0';
+  ctx.fillRect(50, 0, 50, 25);
+  ctx.fillStyle = '#00f';
+  ctx.fillRect(0, 25, 50, 25);
+  ctx.fillStyle = '#fff';
+  ctx.fillRect(50, 25, 50, 25);
+  _assertPixelApprox(canvas, 10,10, 0,255,0,255, 2);
+  _assertPixelApprox(canvas, 60,10, 0,255,0,255, 2);
+  _assertPixelApprox(canvas, 10,30, 0,255,0,255, 2);
+  _assertPixelApprox(canvas, 60,30, 0,255,0,255, 2);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/filters/2d.filter.canvasFilterObject.componentTransfer.discrete.tentative.html b/testing/web-platform/tests/html/canvas/offscreen/filters/2d.filter.canvasFilterObject.componentTransfer.discrete.tentative.html
new file mode 100644
index 0000000000..e91fc5502e
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/filters/2d.filter.canvasFilterObject.componentTransfer.discrete.tentative.html
@@ -0,0 +1,67 @@
+
+
+OffscreenCanvas test: 2d.filter.canvasFilterObject.componentTransfer.discrete.tentative
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.filter.canvasFilterObject.componentTransfer.discrete.tentative
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Test pixels on CanvasFilter() componentTransfer with discrete type
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/filters/2d.filter.canvasFilterObject.componentTransfer.discrete.tentative.worker.js b/testing/web-platform/tests/html/canvas/offscreen/filters/2d.filter.canvasFilterObject.componentTransfer.discrete.tentative.worker.js
new file mode 100644
index 0000000000..0a7752bf13
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/filters/2d.filter.canvasFilterObject.componentTransfer.discrete.tentative.worker.js
@@ -0,0 +1,62 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.filter.canvasFilterObject.componentTransfer.discrete.tentative
+// Description:Test pixels on CanvasFilter() componentTransfer with discrete type
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("Test pixels on CanvasFilter() componentTransfer with discrete type");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  // From https://www.w3.org/TR/SVG11/filters.html#feComponentTransferElement
+  function getTransformedValue(C, V) {
+      // Get the right interval
+      const n = V.length;
+      const k = C == 1 ? n - 1 : Math.floor(C * n);
+      return V[k];
+  }
+
+  function getColor(inputColor, tableValues) {
+      const result = [0, 0, 0];
+      for (const i in inputColor) {
+          const C = inputColor[i]/255;
+          const Cprime = getTransformedValue(C, tableValues[i]);
+          result[i] = Math.max(0, Math.min(1, Cprime)) * 255;
+      }
+      return result;
+  }
+
+  tableValuesR = [0, 0, 1, 1];
+  tableValuesG = [2, 0, 0.5, 3];
+  tableValuesB = [1, -1, 5, 0];
+  ctx.filter = new CanvasFilter({filter: 'componentTransfer',
+      funcR: {type: 'discrete', tableValues: tableValuesR},
+      funcG: {type: 'discrete', tableValues: tableValuesG},
+      funcB: {type: 'discrete', tableValues: tableValuesB},
+  });
+
+  const inputColors = [
+      [255, 255, 255],
+      [0, 0, 0],
+      [127, 0, 34],
+      [252, 186, 3],
+      [50, 68, 87],
+  ];
+
+  for (const color of inputColors) {
+      let outputColor = getColor(color, [tableValuesR, tableValuesG, tableValuesB]);
+      ctx.fillStyle = `rgb(${color[0]}, ${color[1]}, ${color[2]})`;
+      ctx.fillRect(0, 0, 10, 10);
+      _assertPixelApprox(canvas, 5, 5, outputColor[0],outputColor[1],outputColor[2],255, 2);
+  }
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/filters/2d.filter.canvasFilterObject.componentTransfer.gamma.tentative.html b/testing/web-platform/tests/html/canvas/offscreen/filters/2d.filter.canvasFilterObject.componentTransfer.gamma.tentative.html
new file mode 100644
index 0000000000..6fa1244a1d
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/filters/2d.filter.canvasFilterObject.componentTransfer.gamma.tentative.html
@@ -0,0 +1,58 @@
+
+
+OffscreenCanvas test: 2d.filter.canvasFilterObject.componentTransfer.gamma.tentative
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.filter.canvasFilterObject.componentTransfer.gamma.tentative
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Test pixels on CanvasFilter() componentTransfer with gamma type
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/filters/2d.filter.canvasFilterObject.componentTransfer.gamma.tentative.worker.js b/testing/web-platform/tests/html/canvas/offscreen/filters/2d.filter.canvasFilterObject.componentTransfer.gamma.tentative.worker.js
new file mode 100644
index 0000000000..0a72055afb
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/filters/2d.filter.canvasFilterObject.componentTransfer.gamma.tentative.worker.js
@@ -0,0 +1,53 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.filter.canvasFilterObject.componentTransfer.gamma.tentative
+// Description:Test pixels on CanvasFilter() componentTransfer with gamma type
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("Test pixels on CanvasFilter() componentTransfer with gamma type");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  // From https://www.w3.org/TR/SVG11/filters.html#feComponentTransferElement
+  function getColor(inputColor, amplitude, exponent, offset) {
+      return [
+          Math.max(0, Math.min(1, Math.pow(inputColor[0]/255, exponent[0]) * amplitude[0] + offset[0])) * 255,
+          Math.max(0, Math.min(1, Math.pow(inputColor[1]/255, exponent[1]) * amplitude[1] + offset[1])) * 255,
+          Math.max(0, Math.min(1, Math.pow(inputColor[2]/255, exponent[2]) * amplitude[2] + offset[2])) * 255,
+      ];
+  }
+
+  const amplitudes = [2, 1.1, 0.5];
+  const exponents = [5, 3, 1];
+  const offsets = [0.25, 0, 0.5];
+  ctx.filter = new CanvasFilter({filter: 'componentTransfer',
+      funcR: {type: 'gamma', amplitude: amplitudes[0], exponent: exponents[0], offset: offsets[0]},
+      funcG: {type: 'gamma', amplitude: amplitudes[1], exponent: exponents[1], offset: offsets[1]},
+      funcB: {type: 'gamma', amplitude: amplitudes[2], exponent: exponents[2], offset: offsets[2]},
+  });
+
+  const inputColors = [
+      [255, 255, 255],
+      [0, 0, 0],
+      [127, 0, 34],
+      [252, 186, 3],
+      [50, 68, 87],
+  ];
+
+  for (const color of inputColors) {
+      let outputColor = getColor(color, amplitudes, exponents, offsets);
+      ctx.fillStyle = `rgb(${color[0]}, ${color[1]}, ${color[2]})`;
+      ctx.fillRect(0, 0, 10, 10);
+      _assertPixelApprox(canvas, 5, 5, outputColor[0],outputColor[1],outputColor[2],255, 2);
+  }
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/filters/2d.filter.canvasFilterObject.componentTransfer.identity.tentative.html b/testing/web-platform/tests/html/canvas/offscreen/filters/2d.filter.canvasFilterObject.componentTransfer.identity.tentative.html
new file mode 100644
index 0000000000..552402c556
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/filters/2d.filter.canvasFilterObject.componentTransfer.identity.tentative.html
@@ -0,0 +1,45 @@
+
+
+OffscreenCanvas test: 2d.filter.canvasFilterObject.componentTransfer.identity.tentative
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.filter.canvasFilterObject.componentTransfer.identity.tentative
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Test pixels on CanvasFilter() componentTransfer with identity type
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/filters/2d.filter.canvasFilterObject.componentTransfer.identity.tentative.worker.js b/testing/web-platform/tests/html/canvas/offscreen/filters/2d.filter.canvasFilterObject.componentTransfer.identity.tentative.worker.js
new file mode 100644
index 0000000000..861f86beb7
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/filters/2d.filter.canvasFilterObject.componentTransfer.identity.tentative.worker.js
@@ -0,0 +1,40 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.filter.canvasFilterObject.componentTransfer.identity.tentative
+// Description:Test pixels on CanvasFilter() componentTransfer with identity type
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("Test pixels on CanvasFilter() componentTransfer with identity type");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.filter = new CanvasFilter({filter: 'componentTransfer',
+      funcR: {type: 'identity'},
+      funcG: {type: 'identity'},
+      funcB: {type: 'identity'},
+  });
+
+  const inputColors = [
+      [255, 255, 255],
+      [0, 0, 0],
+      [127, 0, 34],
+      [252, 186, 3],
+      [50, 68, 87],
+  ];
+
+  for (const color of inputColors) {
+      ctx.fillStyle = `rgba(${color[0]}, ${color[1]}, ${color[2]}, 1)`,
+      ctx.fillRect(0, 0, 10, 10);
+      _assertPixel(canvas, 5, 5, color[0],color[1],color[2],255);
+  }
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/filters/2d.filter.canvasFilterObject.componentTransfer.linear.tentative.html b/testing/web-platform/tests/html/canvas/offscreen/filters/2d.filter.canvasFilterObject.componentTransfer.linear.tentative.html
new file mode 100644
index 0000000000..3d842ab5b4
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/filters/2d.filter.canvasFilterObject.componentTransfer.linear.tentative.html
@@ -0,0 +1,57 @@
+
+
+OffscreenCanvas test: 2d.filter.canvasFilterObject.componentTransfer.linear.tentative
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.filter.canvasFilterObject.componentTransfer.linear.tentative
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Test pixels on CanvasFilter() componentTransfer with linear type
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/filters/2d.filter.canvasFilterObject.componentTransfer.linear.tentative.worker.js b/testing/web-platform/tests/html/canvas/offscreen/filters/2d.filter.canvasFilterObject.componentTransfer.linear.tentative.worker.js
new file mode 100644
index 0000000000..a3a8240906
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/filters/2d.filter.canvasFilterObject.componentTransfer.linear.tentative.worker.js
@@ -0,0 +1,52 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.filter.canvasFilterObject.componentTransfer.linear.tentative
+// Description:Test pixels on CanvasFilter() componentTransfer with linear type
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("Test pixels on CanvasFilter() componentTransfer with linear type");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  // From https://www.w3.org/TR/SVG11/filters.html#feComponentTransferElement
+  function getColor(inputColor, slopes, intercepts) {
+      return [
+          Math.max(0, Math.min(1, inputColor[0]/255 * slopes[0] + intercepts[0])) * 255,
+          Math.max(0, Math.min(1, inputColor[1]/255 * slopes[1] + intercepts[1])) * 255,
+          Math.max(0, Math.min(1, inputColor[2]/255 * slopes[2] + intercepts[2])) * 255,
+      ];
+  }
+
+  const slopes = [0.5, 1.2, -0.2];
+  const intercepts = [0.25, 0, 0.5];
+  ctx.filter = new CanvasFilter({filter: 'componentTransfer',
+      funcR: {type: 'linear', slope: slopes[0], intercept: intercepts[0]},
+      funcG: {type: 'linear', slope: slopes[1], intercept: intercepts[1]},
+      funcB: {type: 'linear', slope: slopes[2], intercept: intercepts[2]},
+  });
+
+  const inputColors = [
+      [255, 255, 255],
+      [0, 0, 0],
+      [127, 0, 34],
+      [252, 186, 3],
+      [50, 68, 87],
+  ];
+
+  for (const color of inputColors) {
+      let outputColor = getColor(color, slopes, intercepts);
+      ctx.fillStyle = `rgb(${color[0]}, ${color[1]}, ${color[2]})`;
+      ctx.fillRect(0, 0, 10, 10);
+      _assertPixelApprox(canvas, 5, 5, outputColor[0],outputColor[1],outputColor[2],255, 2);
+  }
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/filters/2d.filter.canvasFilterObject.componentTransfer.table.tentative.html b/testing/web-platform/tests/html/canvas/offscreen/filters/2d.filter.canvasFilterObject.componentTransfer.table.tentative.html
new file mode 100644
index 0000000000..caef1eaef3
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/filters/2d.filter.canvasFilterObject.componentTransfer.table.tentative.html
@@ -0,0 +1,67 @@
+
+
+OffscreenCanvas test: 2d.filter.canvasFilterObject.componentTransfer.table.tentative
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.filter.canvasFilterObject.componentTransfer.table.tentative
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Test pixels on CanvasFilter() componentTransfer with table type
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/filters/2d.filter.canvasFilterObject.componentTransfer.table.tentative.worker.js b/testing/web-platform/tests/html/canvas/offscreen/filters/2d.filter.canvasFilterObject.componentTransfer.table.tentative.worker.js
new file mode 100644
index 0000000000..d23534a014
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/filters/2d.filter.canvasFilterObject.componentTransfer.table.tentative.worker.js
@@ -0,0 +1,62 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.filter.canvasFilterObject.componentTransfer.table.tentative
+// Description:Test pixels on CanvasFilter() componentTransfer with table type
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("Test pixels on CanvasFilter() componentTransfer with table type");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  // From https://www.w3.org/TR/SVG11/filters.html#feComponentTransferElement
+  function getTransformedValue(C, V) {
+      // Get the right interval
+      const n = V.length - 1;
+      const k = C == 1 ? n - 1 : Math.floor(C * n);
+      return V[k] + (C - k/n) * n * (V[k + 1] - V[k]);
+  }
+
+  function getColor(inputColor, tableValues) {
+      const result = [0, 0, 0];
+      for (const i in inputColor) {
+          const C = inputColor[i]/255;
+          const Cprime = getTransformedValue(C, tableValues[i]);
+          result[i] = Math.max(0, Math.min(1, Cprime)) * 255;
+      }
+      return result;
+  }
+
+  tableValuesR = [0, 0, 1, 1];
+  tableValuesG = [2, 0, 0.5, 3];
+  tableValuesB = [1, -1, 5, 0];
+  ctx.filter = new CanvasFilter({filter: 'componentTransfer',
+      funcR: {type: 'table', tableValues: tableValuesR},
+      funcG: {type: 'table', tableValues: tableValuesG},
+      funcB: {type: 'table', tableValues: tableValuesB},
+  });
+
+  const inputColors = [
+      [255, 255, 255],
+      [0, 0, 0],
+      [127, 0, 34],
+      [252, 186, 3],
+      [50, 68, 87],
+  ];
+
+  for (const color of inputColors) {
+      let outputColor = getColor(color, [tableValuesR, tableValuesG, tableValuesB]);
+      ctx.fillStyle = `rgb(${color[0]}, ${color[1]}, ${color[2]})`;
+      ctx.fillRect(0, 0, 10, 10);
+      _assertPixelApprox(canvas, 5, 5, outputColor[0],outputColor[1],outputColor[2],255, 2);
+  }
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/filters/2d.filter.canvasFilterObject.convolveMatrix.exceptions.tentative.html b/testing/web-platform/tests/html/canvas/offscreen/filters/2d.filter.canvasFilterObject.convolveMatrix.exceptions.tentative.html
new file mode 100644
index 0000000000..fed21c695c
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/filters/2d.filter.canvasFilterObject.convolveMatrix.exceptions.tentative.html
@@ -0,0 +1,43 @@
+
+
+OffscreenCanvas test: 2d.filter.canvasFilterObject.convolveMatrix.exceptions.tentative
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.filter.canvasFilterObject.convolveMatrix.exceptions.tentative
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Test exceptions on CanvasFilter() convolveMatrix
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/filters/2d.filter.canvasFilterObject.convolveMatrix.exceptions.tentative.worker.js b/testing/web-platform/tests/html/canvas/offscreen/filters/2d.filter.canvasFilterObject.convolveMatrix.exceptions.tentative.worker.js
new file mode 100644
index 0000000000..02efed9496
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/filters/2d.filter.canvasFilterObject.convolveMatrix.exceptions.tentative.worker.js
@@ -0,0 +1,38 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.filter.canvasFilterObject.convolveMatrix.exceptions.tentative
+// Description:Test exceptions on CanvasFilter() convolveMatrix
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("Test exceptions on CanvasFilter() convolveMatrix");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  assert_throws_js(TypeError, function() { new CanvasFilter({filter: 'convolveMatrix'}); });
+  assert_throws_js(TypeError, function() { new CanvasFilter({filter: 'convolveMatrix', divisor: 2}); });
+  assert_throws_js(TypeError, function() { new CanvasFilter({filter: 'convolveMatrix', kernelMatrix: null}); });
+  assert_throws_js(TypeError, function() { new CanvasFilter({filter: 'convolveMatrix', kernelMatrix: 1}); });
+  assert_throws_js(TypeError, function() { new CanvasFilter({filter: 'convolveMatrix', kernelMatrix: [[1, 0], [0]]}); });
+  assert_throws_js(TypeError, function() { new CanvasFilter({filter: 'convolveMatrix', kernelMatrix: [[1, 'a'], [0]]}); });
+  assert_throws_js(TypeError, function() { new CanvasFilter({filter: 'convolveMatrix', kernelMatrix: [[1, 0], 0]}); });
+  assert_throws_js(TypeError, function() { new CanvasFilter({filter: 'convolveMatrix', kernelMatrix: [[1, 0], [0, Infinity]]}); });
+  assert_throws_js(TypeError, function() { new CanvasFilter({filter: 'convolveMatrix', kernelMatrix: []}); });
+  assert_throws_js(TypeError, function() { new CanvasFilter({filter: 'convolveMatrix', kernelMatrix: [1]}); });
+  assert_throws_js(TypeError, function() { new CanvasFilter({filter: 'convolveMatrix', kernelMatrix: [1, 2, 3, 4]}); });
+  assert_throws_js(TypeError, function() { new CanvasFilter({filter: 'convolveMatrix', kernelMatrix: [[], []]}); });
+  assert_throws_js(TypeError, function() { new CanvasFilter({filter: 'convolveMatrix', kernelMatrix: [[1, 2], []]}); });
+  assert_throws_js(TypeError, function() { new CanvasFilter({filter: 'convolveMatrix', kernelMatrix: [[], [1, 2]]}); });
+  // This should not throw an error
+  ctx.filter = new CanvasFilter({filter: 'convolveMatrix', kernelMatrix: [[]]});
+  ctx.filter = new CanvasFilter({filter: 'convolveMatrix', kernelMatrix: [[1]]});
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/filters/2d.filter.canvasFilterObject.dropShadow.exceptions.tentative.html b/testing/web-platform/tests/html/canvas/offscreen/filters/2d.filter.canvasFilterObject.dropShadow.exceptions.tentative.html
new file mode 100644
index 0000000000..4cd0dc8e1c
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/filters/2d.filter.canvasFilterObject.dropShadow.exceptions.tentative.html
@@ -0,0 +1,124 @@
+
+
+OffscreenCanvas test: 2d.filter.canvasFilterObject.dropShadow.exceptions.tentative
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.filter.canvasFilterObject.dropShadow.exceptions.tentative
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Test exceptions on CanvasFilter() dropShadow object
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/filters/2d.filter.canvasFilterObject.dropShadow.exceptions.tentative.worker.js b/testing/web-platform/tests/html/canvas/offscreen/filters/2d.filter.canvasFilterObject.dropShadow.exceptions.tentative.worker.js
new file mode 100644
index 0000000000..9c30e5633a
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/filters/2d.filter.canvasFilterObject.dropShadow.exceptions.tentative.worker.js
@@ -0,0 +1,119 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.filter.canvasFilterObject.dropShadow.exceptions.tentative
+// Description:Test exceptions on CanvasFilter() dropShadow object
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("Test exceptions on CanvasFilter() dropShadow object");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  // dx
+  _assert(new CanvasFilter({filter: 'dropShadow', dx: 10}), "new CanvasFilter({filter: 'dropShadow', dx: 10})");
+  _assert(new CanvasFilter({filter: 'dropShadow', dx: -1}), "new CanvasFilter({filter: 'dropShadow', dx: -1})");
+  _assert(new CanvasFilter({filter: 'dropShadow', dx: 0.5}), "new CanvasFilter({filter: 'dropShadow', dx: 0.5})");
+  _assert(new CanvasFilter({filter: 'dropShadow', dx: null}), "new CanvasFilter({filter: 'dropShadow', dx: null})");
+  _assert(new CanvasFilter({filter: 'dropShadow', dx: true}), "new CanvasFilter({filter: 'dropShadow', dx: true})");
+  _assert(new CanvasFilter({filter: 'dropShadow', dx: false}), "new CanvasFilter({filter: 'dropShadow', dx: false})");
+  _assert(new CanvasFilter({filter: 'dropShadow', dx: []}), "new CanvasFilter({filter: 'dropShadow', dx: []})");
+  _assert(new CanvasFilter({filter: 'dropShadow', dx: [20]}), "new CanvasFilter({filter: 'dropShadow', dx: [\""+(20)+"\"]})");
+  _assert(new CanvasFilter({filter: 'dropShadow', dx: '30'}), "new CanvasFilter({filter: 'dropShadow', dx: '30'})");
+  // dy
+  _assert(new CanvasFilter({filter: 'dropShadow', dy: 10}), "new CanvasFilter({filter: 'dropShadow', dy: 10})");
+  _assert(new CanvasFilter({filter: 'dropShadow', dy: -1}), "new CanvasFilter({filter: 'dropShadow', dy: -1})");
+  _assert(new CanvasFilter({filter: 'dropShadow', dy: 0.5}), "new CanvasFilter({filter: 'dropShadow', dy: 0.5})");
+  _assert(new CanvasFilter({filter: 'dropShadow', dy: null}), "new CanvasFilter({filter: 'dropShadow', dy: null})");
+  _assert(new CanvasFilter({filter: 'dropShadow', dy: true}), "new CanvasFilter({filter: 'dropShadow', dy: true})");
+  _assert(new CanvasFilter({filter: 'dropShadow', dy: false}), "new CanvasFilter({filter: 'dropShadow', dy: false})");
+  _assert(new CanvasFilter({filter: 'dropShadow', dy: []}), "new CanvasFilter({filter: 'dropShadow', dy: []})");
+  _assert(new CanvasFilter({filter: 'dropShadow', dy: [20]}), "new CanvasFilter({filter: 'dropShadow', dy: [\""+(20)+"\"]})");
+  _assert(new CanvasFilter({filter: 'dropShadow', dy: '30'}), "new CanvasFilter({filter: 'dropShadow', dy: '30'})");
+  // floodOpacity
+  _assert(new CanvasFilter({filter: 'dropShadow', floodOpacity: 10}), "new CanvasFilter({filter: 'dropShadow', floodOpacity: 10})");
+  _assert(new CanvasFilter({filter: 'dropShadow', floodOpacity: -1}), "new CanvasFilter({filter: 'dropShadow', floodOpacity: -1})");
+  _assert(new CanvasFilter({filter: 'dropShadow', floodOpacity: 0.5}), "new CanvasFilter({filter: 'dropShadow', floodOpacity: 0.5})");
+  _assert(new CanvasFilter({filter: 'dropShadow', floodOpacity: null}), "new CanvasFilter({filter: 'dropShadow', floodOpacity: null})");
+  _assert(new CanvasFilter({filter: 'dropShadow', floodOpacity: true}), "new CanvasFilter({filter: 'dropShadow', floodOpacity: true})");
+  _assert(new CanvasFilter({filter: 'dropShadow', floodOpacity: false}), "new CanvasFilter({filter: 'dropShadow', floodOpacity: false})");
+  _assert(new CanvasFilter({filter: 'dropShadow', floodOpacity: []}), "new CanvasFilter({filter: 'dropShadow', floodOpacity: []})");
+  _assert(new CanvasFilter({filter: 'dropShadow', floodOpacity: [20]}), "new CanvasFilter({filter: 'dropShadow', floodOpacity: [\""+(20)+"\"]})");
+  _assert(new CanvasFilter({filter: 'dropShadow', floodOpacity: '30'}), "new CanvasFilter({filter: 'dropShadow', floodOpacity: '30'})");
+  // stdDeviation
+  _assert(new CanvasFilter({filter: 'dropShadow', stdDeviation: 10}), "new CanvasFilter({filter: 'dropShadow', stdDeviation: 10})");
+  _assert(new CanvasFilter({filter: 'dropShadow', stdDeviation: -1}), "new CanvasFilter({filter: 'dropShadow', stdDeviation: -1})");
+  _assert(new CanvasFilter({filter: 'dropShadow', stdDeviation: 0.5}), "new CanvasFilter({filter: 'dropShadow', stdDeviation: 0.5})");
+  _assert(new CanvasFilter({filter: 'dropShadow', stdDeviation: null}), "new CanvasFilter({filter: 'dropShadow', stdDeviation: null})");
+  _assert(new CanvasFilter({filter: 'dropShadow', stdDeviation: true}), "new CanvasFilter({filter: 'dropShadow', stdDeviation: true})");
+  _assert(new CanvasFilter({filter: 'dropShadow', stdDeviation: false}), "new CanvasFilter({filter: 'dropShadow', stdDeviation: false})");
+  _assert(new CanvasFilter({filter: 'dropShadow', stdDeviation: []}), "new CanvasFilter({filter: 'dropShadow', stdDeviation: []})");
+  _assert(new CanvasFilter({filter: 'dropShadow', stdDeviation: [20]}), "new CanvasFilter({filter: 'dropShadow', stdDeviation: [\""+(20)+"\"]})");
+  _assert(new CanvasFilter({filter: 'dropShadow', stdDeviation: '30'}), "new CanvasFilter({filter: 'dropShadow', stdDeviation: '30'})");
+  _assert(new CanvasFilter({filter: 'dropShadow', stdDeviation: [10, -1]}), "new CanvasFilter({filter: 'dropShadow', stdDeviation: [10, -1]})");
+  _assert(new CanvasFilter({filter: 'dropShadow', stdDeviation: [0.5, null]}), "new CanvasFilter({filter: 'dropShadow', stdDeviation: [0.5, null]})");
+  _assert(new CanvasFilter({filter: 'dropShadow', stdDeviation: [true, false]}), "new CanvasFilter({filter: 'dropShadow', stdDeviation: [true, false]})");
+  _assert(new CanvasFilter({filter: 'dropShadow', stdDeviation: [[], [20]]}), "new CanvasFilter({filter: 'dropShadow', stdDeviation: [[], [\""+(20)+"\"]]})");
+  _assert(new CanvasFilter({filter: 'dropShadow', stdDeviation: ['30', ['40']]}), "new CanvasFilter({filter: 'dropShadow', stdDeviation: ['30', ['40']]})");
+  // floodColor
+  _assert(new CanvasFilter({filter: 'dropShadow', floodColor: 'red'}), "new CanvasFilter({filter: 'dropShadow', floodColor: 'red'})");
+  _assert(new CanvasFilter({filter: 'dropShadow', floodColor: 'canvas'}), "new CanvasFilter({filter: 'dropShadow', floodColor: 'canvas'})");
+  _assert(new CanvasFilter({filter: 'dropShadow', floodColor: 'rgba(4, -3, 0.5, 1)'}), "new CanvasFilter({filter: 'dropShadow', floodColor: 'rgba(4, -3, 0.5, 1)'})");
+  _assert(new CanvasFilter({filter: 'dropShadow', floodColor: '#aabbccdd'}), "new CanvasFilter({filter: 'dropShadow', floodColor: '#aabbccdd'})");
+  _assert(new CanvasFilter({filter: 'dropShadow', floodColor: '#abcd'}), "new CanvasFilter({filter: 'dropShadow', floodColor: '#abcd'})");
+
+  // dx
+  assert_throws_js(TypeError, function() { new CanvasFilter({filter: 'dropShadow', dx: NaN}); });
+  assert_throws_js(TypeError, function() { new CanvasFilter({filter: 'dropShadow', dx: Infinity}); });
+  assert_throws_js(TypeError, function() { new CanvasFilter({filter: 'dropShadow', dx: -Infinity}); });
+  assert_throws_js(TypeError, function() { new CanvasFilter({filter: 'dropShadow', dx: undefined}); });
+  assert_throws_js(TypeError, function() { new CanvasFilter({filter: 'dropShadow', dx: 'test'}); });
+  assert_throws_js(TypeError, function() { new CanvasFilter({filter: 'dropShadow', dx: {}}); });
+  assert_throws_js(TypeError, function() { new CanvasFilter({filter: 'dropShadow', dx: [1, 2]}); });
+  // dy
+  assert_throws_js(TypeError, function() { new CanvasFilter({filter: 'dropShadow', dy: NaN}); });
+  assert_throws_js(TypeError, function() { new CanvasFilter({filter: 'dropShadow', dy: Infinity}); });
+  assert_throws_js(TypeError, function() { new CanvasFilter({filter: 'dropShadow', dy: -Infinity}); });
+  assert_throws_js(TypeError, function() { new CanvasFilter({filter: 'dropShadow', dy: undefined}); });
+  assert_throws_js(TypeError, function() { new CanvasFilter({filter: 'dropShadow', dy: 'test'}); });
+  assert_throws_js(TypeError, function() { new CanvasFilter({filter: 'dropShadow', dy: {}}); });
+  assert_throws_js(TypeError, function() { new CanvasFilter({filter: 'dropShadow', dy: [1, 2]}); });
+  // floodOpacity
+  assert_throws_js(TypeError, function() { new CanvasFilter({filter: 'dropShadow', floodOpacity: NaN}); });
+  assert_throws_js(TypeError, function() { new CanvasFilter({filter: 'dropShadow', floodOpacity: Infinity}); });
+  assert_throws_js(TypeError, function() { new CanvasFilter({filter: 'dropShadow', floodOpacity: -Infinity}); });
+  assert_throws_js(TypeError, function() { new CanvasFilter({filter: 'dropShadow', floodOpacity: undefined}); });
+  assert_throws_js(TypeError, function() { new CanvasFilter({filter: 'dropShadow', floodOpacity: 'test'}); });
+  assert_throws_js(TypeError, function() { new CanvasFilter({filter: 'dropShadow', floodOpacity: {}}); });
+  assert_throws_js(TypeError, function() { new CanvasFilter({filter: 'dropShadow', floodOpacity: [1, 2]}); });
+  // stdDeviation
+  assert_throws_js(TypeError, function() { new CanvasFilter({filter: 'dropShadow', stdDeviation: NaN}); });
+  assert_throws_js(TypeError, function() { new CanvasFilter({filter: 'dropShadow', stdDeviation: Infinity}); });
+  assert_throws_js(TypeError, function() { new CanvasFilter({filter: 'dropShadow', stdDeviation: -Infinity}); });
+  assert_throws_js(TypeError, function() { new CanvasFilter({filter: 'dropShadow', stdDeviation: undefined}); });
+  assert_throws_js(TypeError, function() { new CanvasFilter({filter: 'dropShadow', stdDeviation: 'test'}); });
+  assert_throws_js(TypeError, function() { new CanvasFilter({filter: 'dropShadow', stdDeviation: {}}); });
+  assert_throws_js(TypeError, function() { new CanvasFilter({filter: 'dropShadow', stdDeviation: [1, 2, 3]}); });
+  assert_throws_js(TypeError, function() { new CanvasFilter({filter: 'dropShadow', stdDeviation: [1, NaN]}); });
+  assert_throws_js(TypeError, function() { new CanvasFilter({filter: 'dropShadow', stdDeviation: [1, Infinity]}); });
+  assert_throws_js(TypeError, function() { new CanvasFilter({filter: 'dropShadow', stdDeviation: [1, -Infinity]}); });
+  assert_throws_js(TypeError, function() { new CanvasFilter({filter: 'dropShadow', stdDeviation: [1, undefined]}); });
+  assert_throws_js(TypeError, function() { new CanvasFilter({filter: 'dropShadow', stdDeviation: [1, 'test']}); });
+  assert_throws_js(TypeError, function() { new CanvasFilter({filter: 'dropShadow', stdDeviation: [1, {}]}); });
+  assert_throws_js(TypeError, function() { new CanvasFilter({filter: 'dropShadow', stdDeviation: [1, [2, 3]]}); });
+  // floodColor
+  assert_throws_js(TypeError, function() { new CanvasFilter({filter: 'dropShadow', floodColor: 'test'}); });
+  assert_throws_js(TypeError, function() { new CanvasFilter({filter: 'dropShadow', floodColor: 'rgba(NaN, 3, 2, 1)'}); });
+  assert_throws_js(TypeError, function() { new CanvasFilter({filter: 'dropShadow', floodColor: 10}); });
+  assert_throws_js(TypeError, function() { new CanvasFilter({filter: 'dropShadow', floodColor: undefined}); });
+  assert_throws_js(TypeError, function() { new CanvasFilter({filter: 'dropShadow', floodColor: null}); });
+  assert_throws_js(TypeError, function() { new CanvasFilter({filter: 'dropShadow', floodColor: NaN}); });
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/filters/2d.filter.canvasFilterObject.dropShadow.tentative-expected.html b/testing/web-platform/tests/html/canvas/offscreen/filters/2d.filter.canvasFilterObject.dropShadow.tentative-expected.html
new file mode 100644
index 0000000000..86c5710132
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/filters/2d.filter.canvasFilterObject.dropShadow.tentative-expected.html
@@ -0,0 +1,57 @@
+
+
+Canvas test: 2d.filter.canvasFilterObject.dropShadow.tentative
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.filter.canvasFilterObject.dropShadow.tentative
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Test CanvasFilter() dropShadow object.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+  
+  
+  
+  
+
+  
+  
+
+  
+  
+  
+  
+  
+
+  
+  
+  
+  
+    
+  
+  
+  
+
+  
+  
+    
+  
+  
+  
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/filters/2d.filter.canvasFilterObject.dropShadow.tentative.html b/testing/web-platform/tests/html/canvas/offscreen/filters/2d.filter.canvasFilterObject.dropShadow.tentative.html
new file mode 100644
index 0000000000..18af95c1ee
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/filters/2d.filter.canvasFilterObject.dropShadow.tentative.html
@@ -0,0 +1,110 @@
+
+
+
+Canvas test: 2d.filter.canvasFilterObject.dropShadow.tentative
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.filter.canvasFilterObject.dropShadow.tentative
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Test CanvasFilter() dropShadow object.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/filters/2d.filter.canvasFilterObject.dropShadow.tentative.w.html b/testing/web-platform/tests/html/canvas/offscreen/filters/2d.filter.canvasFilterObject.dropShadow.tentative.w.html
new file mode 100644
index 0000000000..b94424dd99
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/filters/2d.filter.canvasFilterObject.dropShadow.tentative.w.html
@@ -0,0 +1,124 @@
+
+
+
+
+Canvas test: 2d.filter.canvasFilterObject.dropShadow.tentative
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.filter.canvasFilterObject.dropShadow.tentative
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Test CanvasFilter() dropShadow object.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/filters/2d.filter.canvasFilterObject.tentative.html b/testing/web-platform/tests/html/canvas/offscreen/filters/2d.filter.canvasFilterObject.tentative.html
new file mode 100644
index 0000000000..6b80005308
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/filters/2d.filter.canvasFilterObject.tentative.html
@@ -0,0 +1,47 @@
+
+
+OffscreenCanvas test: 2d.filter.canvasFilterObject.tentative
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.filter.canvasFilterObject.tentative
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Test CanvasFilter() object
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/filters/2d.filter.canvasFilterObject.tentative.worker.js b/testing/web-platform/tests/html/canvas/offscreen/filters/2d.filter.canvasFilterObject.tentative.worker.js
new file mode 100644
index 0000000000..8e2e794c39
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/filters/2d.filter.canvasFilterObject.tentative.worker.js
@@ -0,0 +1,42 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.filter.canvasFilterObject.tentative
+// Description:Test CanvasFilter() object
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("Test CanvasFilter() object");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  _assert(ctx.filter == 'none', "ctx.filter == 'none'");
+  ctx.filter = 'blur(5px)';
+  _assert(ctx.filter == 'blur(5px)', "ctx.filter == 'blur(5px)'");
+  ctx.filter = new CanvasFilter({filter: 'gaussianBlur', stdDeviation: 5});
+  _assert(ctx.filter.toString() == '[object CanvasFilter]', "ctx.filter.toString() == '[object CanvasFilter]'");
+  ctx.filter = new CanvasFilter([
+      {filter: 'gaussianBlur', stdDeviation: 5},
+      {filter: 'gaussianBlur', stdDeviation: 10}
+  ]);
+  _assert(ctx.filter.toString() == '[object CanvasFilter]', "ctx.filter.toString() == '[object CanvasFilter]'");
+  var canvas2 = new OffscreenCanvas(100, 50);
+  var ctx2 = canvas2.getContext('2d');
+  ctx2.filter = ctx.filter;
+  _assert(ctx.filter.toString() == '[object CanvasFilter]', "ctx.filter.toString() == '[object CanvasFilter]'");
+  ctx.filter = 'blur(5px)';
+  _assert(ctx.filter == 'blur(5px)', "ctx.filter == 'blur(5px)'");
+  ctx.filter = 'none';
+  _assert(ctx.filter == 'none', "ctx.filter == 'none'");
+  ctx.filter = new CanvasFilter({filter: 'gaussianBlur', stdDeviation: 5});
+  ctx.filter = 'this string is not a filter and should do nothing';
+  _assert(ctx.filter.toString() == '[object CanvasFilter]', "ctx.filter.toString() == '[object CanvasFilter]'");
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/filters/2d.filter.canvasFilterObject.turbulence.inputTypes.tentative.html b/testing/web-platform/tests/html/canvas/offscreen/filters/2d.filter.canvasFilterObject.turbulence.inputTypes.tentative.html
new file mode 100644
index 0000000000..6392659c94
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/filters/2d.filter.canvasFilterObject.turbulence.inputTypes.tentative.html
@@ -0,0 +1,130 @@
+
+
+OffscreenCanvas test: 2d.filter.canvasFilterObject.turbulence.inputTypes.tentative
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.filter.canvasFilterObject.turbulence.inputTypes.tentative
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Test exceptions on CanvasFilter() turbulence object
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/filters/2d.filter.canvasFilterObject.turbulence.inputTypes.tentative.worker.js b/testing/web-platform/tests/html/canvas/offscreen/filters/2d.filter.canvasFilterObject.turbulence.inputTypes.tentative.worker.js
new file mode 100644
index 0000000000..82f4ace506
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/filters/2d.filter.canvasFilterObject.turbulence.inputTypes.tentative.worker.js
@@ -0,0 +1,125 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.filter.canvasFilterObject.turbulence.inputTypes.tentative
+// Description:Test exceptions on CanvasFilter() turbulence object
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("Test exceptions on CanvasFilter() turbulence object");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  const errorTestCases = [
+    {baseFrequency: {}},
+    {baseFrequency: -1},
+    {baseFrequency: [0, -1]},
+    {baseFrequency: NaN},
+    {baseFrequency: Infinity},
+    {baseFrequency: undefined},
+    {baseFrequency: -Infinity},
+    {baseFrequency: 'test'},
+
+    {numOctaves: {}},
+    {numOctaves: -1},
+    {numOctaves: NaN},
+    {numOctaves: Infinity},
+    {numOctaves: undefined},
+    {numOctaves: -Infinity},
+    {numOctaves: [1, 1]},
+    {numOctaves: 'test'},
+
+    {seed: {}},
+    {seed: NaN},
+    {seed: Infinity},
+    {seed: undefined},
+    {seed: -Infinity},
+    {seed: [1, 1]},
+    {seed: 'test'},
+
+    {stitchTiles: {}},
+    {stitchTiles: NaN},
+    {stitchTiles: Infinity},
+    {stitchTiles: undefined},
+    {stitchTiles: -Infinity},
+    {stitchTiles: [1, 1]},
+    {stitchTiles: 'test'},
+    {stitchTiles: null},
+    {stitchTiles: []},
+    {stitchTiles: [10]},
+    {stitchTiles: 30},
+    {stitchTiles: false},
+    {stitchTiles: true},
+    {stitchTiles: '10'},
+    {stitchTiles: -1},
+
+    {type: {}},
+    {type: NaN},
+    {type: Infinity},
+    {type: undefined},
+    {type: -Infinity},
+    {type: [1, 1]},
+    {type: 'test'},
+    {type: null},
+    {type: []},
+    {type: [10]},
+    {type: 30},
+    {type: false},
+    {type: true},
+    {type: '10'},
+    {type: -1},
+  ]
+
+  // null and [] = 0 when parsed as number
+  const workingTestCases = [
+    {baseFrequency: null},
+    {baseFrequency: []},
+    {baseFrequency: [10]},
+    {baseFrequency: [10, 3]},
+    {baseFrequency: 30},
+    {baseFrequency: false},
+    {baseFrequency: true},
+    {baseFrequency: '10'},
+
+    {numOctaves: null},
+    {numOctaves: []},
+    {numOctaves: [10]},
+    {numOctaves: 30},
+    {numOctaves: false},
+    {numOctaves: true},
+    {numOctaves: '10'},
+
+    {seed: null},
+    {seed: []},
+    {seed: [10]},
+    {seed: 30},
+    {seed: false},
+    {seed: true},
+    {seed: '10'},
+    {seed: -1},
+
+    {stitchTiles: 'stitch'},
+    {stitchTiles: 'noStitch'},
+
+    {type: 'fractalNoise'},
+    {type: 'turbulence'},
+  ]
+
+  for (testCase of errorTestCases) {
+    const filterOptions = {...{filter: 'turbulence'}, ...testCase};
+    assert_throws_js(TypeError, function() { new CanvasFilter(filterOptions); });
+  }
+
+  for (testCase of workingTestCases) {
+    const filterOptions = {...{filter: 'turbulence'}, ...testCase};
+    _assert(new CanvasFilter(filterOptions) != null, "new CanvasFilter(filterOptions) != null");
+  }
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/filters/2d.filter.value.html b/testing/web-platform/tests/html/canvas/offscreen/filters/2d.filter.value.html
new file mode 100644
index 0000000000..5594174cf6
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/filters/2d.filter.value.html
@@ -0,0 +1,56 @@
+
+
+OffscreenCanvas test: 2d.filter.value
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.filter.value
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              test if ctx.filter works correctly
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/filters/2d.filter.value.worker.js b/testing/web-platform/tests/html/canvas/offscreen/filters/2d.filter.value.worker.js
new file mode 100644
index 0000000000..2308315b63
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/filters/2d.filter.value.worker.js
@@ -0,0 +1,51 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.filter.value
+// Description:test if ctx.filter works correctly
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("test if ctx.filter works correctly");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  _assert(ctx.filter == 'none', "ctx.filter == 'none'");
+  ctx.filter = 'blur(5px)';
+  _assert(ctx.filter == 'blur(5px)', "ctx.filter == 'blur(5px)'");
+  ctx.save();
+  ctx.filter = 'none';
+  _assert(ctx.filter == 'none', "ctx.filter == 'none'");
+  ctx.restore();
+  _assert(ctx.filter == 'blur(5px)', "ctx.filter == 'blur(5px)'");
+
+  ctx.filter = 'blur(10)';
+  _assert(ctx.filter == 'blur(5px)', "ctx.filter == 'blur(5px)'");
+  ctx.filter = 'blur 10px';
+  _assert(ctx.filter == 'blur(5px)', "ctx.filter == 'blur(5px)'");
+
+  ctx.filter = 'inherit';
+  _assert(ctx.filter == 'blur(5px)', "ctx.filter == 'blur(5px)'");
+  ctx.filter = 'initial';
+  _assert(ctx.filter == 'blur(5px)', "ctx.filter == 'blur(5px)'");
+  ctx.filter = 'unset';
+  _assert(ctx.filter == 'blur(5px)', "ctx.filter == 'blur(5px)'");
+
+  ctx.filter = '';
+  _assert(ctx.filter == 'blur(5px)', "ctx.filter == 'blur(5px)'");
+  ctx.filter = null;
+  _assert(ctx.filter == 'blur(5px)', "ctx.filter == 'blur(5px)'");
+  ctx.filter = undefined;
+  _assert(ctx.filter == 'blur(5px)', "ctx.filter == 'blur(5px)'");
+
+  ctx.filter = 'blur(  5px)';
+  assert_equals(ctx.filter, 'blur(  5px)');
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.endlayer.alone-expected.html b/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.endlayer.alone-expected.html
new file mode 100644
index 0000000000..607526e437
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.endlayer.alone-expected.html
@@ -0,0 +1,21 @@
+
+
+Canvas test: 2d.layer.endlayer.alone
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.layer.endlayer.alone
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              A test to make sure a single endLayer with no beginLayer is a no-op.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.endlayer.alone.html b/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.endlayer.alone.html
new file mode 100644
index 0000000000..6a0e5cce71
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.endlayer.alone.html
@@ -0,0 +1,27 @@
+
+
+
+Canvas test: 2d.layer.endlayer.alone
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.layer.endlayer.alone
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              A test to make sure a single endLayer with no beginLayer is a no-op.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.endlayer.alone.w.html b/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.endlayer.alone.w.html
new file mode 100644
index 0000000000..ddb2671aaa
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.endlayer.alone.w.html
@@ -0,0 +1,41 @@
+
+
+
+
+Canvas test: 2d.layer.endlayer.alone
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.layer.endlayer.alone
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              A test to make sure a single endLayer with no beginLayer is a no-op.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.endlayer.unmatched-expected.html b/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.endlayer.unmatched-expected.html
new file mode 100644
index 0000000000..e6dd85b7e2
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.endlayer.unmatched-expected.html
@@ -0,0 +1,24 @@
+
+
+Canvas test: 2d.layer.endlayer.unmatched
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.layer.endlayer.unmatched
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              A test to make sure an unmatched endLayer is a no-op and has no effect on the code following it.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.endlayer.unmatched.html b/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.endlayer.unmatched.html
new file mode 100644
index 0000000000..b204c49e5e
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.endlayer.unmatched.html
@@ -0,0 +1,31 @@
+
+
+
+Canvas test: 2d.layer.endlayer.unmatched
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.layer.endlayer.unmatched
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              A test to make sure an unmatched endLayer is a no-op and has no effect on the code following it.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.endlayer.unmatched.w.html b/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.endlayer.unmatched.w.html
new file mode 100644
index 0000000000..2e1cb62c32
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.endlayer.unmatched.w.html
@@ -0,0 +1,45 @@
+
+
+
+
+Canvas test: 2d.layer.endlayer.unmatched
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.layer.endlayer.unmatched
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              A test to make sure an unmatched endLayer is a no-op and has no effect on the code following it.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.global-states.alpha-expected.html b/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.global-states.alpha-expected.html
new file mode 100644
index 0000000000..0666e3098a
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.global-states.alpha-expected.html
@@ -0,0 +1,31 @@
+
+
+Canvas test: 2d.layer.global-states.alpha
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.layer.global-states.alpha
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Checks that layers correctly use global render states.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.global-states.alpha.blending-expected.html b/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.global-states.alpha.blending-expected.html
new file mode 100644
index 0000000000..8a45027588
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.global-states.alpha.blending-expected.html
@@ -0,0 +1,32 @@
+
+
+Canvas test: 2d.layer.global-states.alpha.blending
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.layer.global-states.alpha.blending
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Checks that layers correctly use global render states.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.global-states.alpha.blending.html b/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.global-states.alpha.blending.html
new file mode 100644
index 0000000000..71414b4b37
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.global-states.alpha.blending.html
@@ -0,0 +1,38 @@
+
+
+
+Canvas test: 2d.layer.global-states.alpha.blending
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.layer.global-states.alpha.blending
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Checks that layers correctly use global render states.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.global-states.alpha.blending.shadow-expected.html b/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.global-states.alpha.blending.shadow-expected.html
new file mode 100644
index 0000000000..d7ba158d16
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.global-states.alpha.blending.shadow-expected.html
@@ -0,0 +1,35 @@
+
+
+Canvas test: 2d.layer.global-states.alpha.blending.shadow
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.layer.global-states.alpha.blending.shadow
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Checks that layers correctly use global render states.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.global-states.alpha.blending.shadow.html b/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.global-states.alpha.blending.shadow.html
new file mode 100644
index 0000000000..551df36b15
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.global-states.alpha.blending.shadow.html
@@ -0,0 +1,41 @@
+
+
+
+Canvas test: 2d.layer.global-states.alpha.blending.shadow
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.layer.global-states.alpha.blending.shadow
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Checks that layers correctly use global render states.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.global-states.alpha.blending.shadow.w.html b/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.global-states.alpha.blending.shadow.w.html
new file mode 100644
index 0000000000..6851a4a846
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.global-states.alpha.blending.shadow.w.html
@@ -0,0 +1,55 @@
+
+
+
+
+Canvas test: 2d.layer.global-states.alpha.blending.shadow
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.layer.global-states.alpha.blending.shadow
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Checks that layers correctly use global render states.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.global-states.alpha.blending.w.html b/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.global-states.alpha.blending.w.html
new file mode 100644
index 0000000000..618480c813
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.global-states.alpha.blending.w.html
@@ -0,0 +1,52 @@
+
+
+
+
+Canvas test: 2d.layer.global-states.alpha.blending
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.layer.global-states.alpha.blending
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Checks that layers correctly use global render states.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.global-states.alpha.composite-expected.html b/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.global-states.alpha.composite-expected.html
new file mode 100644
index 0000000000..951049e638
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.global-states.alpha.composite-expected.html
@@ -0,0 +1,32 @@
+
+
+Canvas test: 2d.layer.global-states.alpha.composite
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.layer.global-states.alpha.composite
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Checks that layers correctly use global render states.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.global-states.alpha.composite.html b/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.global-states.alpha.composite.html
new file mode 100644
index 0000000000..94fed5752d
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.global-states.alpha.composite.html
@@ -0,0 +1,38 @@
+
+
+
+Canvas test: 2d.layer.global-states.alpha.composite
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.layer.global-states.alpha.composite
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Checks that layers correctly use global render states.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.global-states.alpha.composite.shadow-expected.html b/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.global-states.alpha.composite.shadow-expected.html
new file mode 100644
index 0000000000..a669a2271e
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.global-states.alpha.composite.shadow-expected.html
@@ -0,0 +1,35 @@
+
+
+Canvas test: 2d.layer.global-states.alpha.composite.shadow
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.layer.global-states.alpha.composite.shadow
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Checks that layers correctly use global render states.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.global-states.alpha.composite.shadow.html b/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.global-states.alpha.composite.shadow.html
new file mode 100644
index 0000000000..841742ef1e
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.global-states.alpha.composite.shadow.html
@@ -0,0 +1,41 @@
+
+
+
+Canvas test: 2d.layer.global-states.alpha.composite.shadow
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.layer.global-states.alpha.composite.shadow
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Checks that layers correctly use global render states.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.global-states.alpha.composite.shadow.w.html b/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.global-states.alpha.composite.shadow.w.html
new file mode 100644
index 0000000000..ef44257c0a
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.global-states.alpha.composite.shadow.w.html
@@ -0,0 +1,55 @@
+
+
+
+
+Canvas test: 2d.layer.global-states.alpha.composite.shadow
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.layer.global-states.alpha.composite.shadow
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Checks that layers correctly use global render states.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.global-states.alpha.composite.w.html b/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.global-states.alpha.composite.w.html
new file mode 100644
index 0000000000..d7d2b7a21e
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.global-states.alpha.composite.w.html
@@ -0,0 +1,52 @@
+
+
+
+
+Canvas test: 2d.layer.global-states.alpha.composite
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.layer.global-states.alpha.composite
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Checks that layers correctly use global render states.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.global-states.alpha.html b/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.global-states.alpha.html
new file mode 100644
index 0000000000..63a264e681
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.global-states.alpha.html
@@ -0,0 +1,37 @@
+
+
+
+Canvas test: 2d.layer.global-states.alpha
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.layer.global-states.alpha
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Checks that layers correctly use global render states.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.global-states.alpha.shadow-expected.html b/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.global-states.alpha.shadow-expected.html
new file mode 100644
index 0000000000..206eb75013
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.global-states.alpha.shadow-expected.html
@@ -0,0 +1,34 @@
+
+
+Canvas test: 2d.layer.global-states.alpha.shadow
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.layer.global-states.alpha.shadow
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Checks that layers correctly use global render states.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.global-states.alpha.shadow.html b/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.global-states.alpha.shadow.html
new file mode 100644
index 0000000000..daa788cd15
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.global-states.alpha.shadow.html
@@ -0,0 +1,40 @@
+
+
+
+Canvas test: 2d.layer.global-states.alpha.shadow
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.layer.global-states.alpha.shadow
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Checks that layers correctly use global render states.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.global-states.alpha.shadow.w.html b/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.global-states.alpha.shadow.w.html
new file mode 100644
index 0000000000..f75db3d249
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.global-states.alpha.shadow.w.html
@@ -0,0 +1,54 @@
+
+
+
+
+Canvas test: 2d.layer.global-states.alpha.shadow
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.layer.global-states.alpha.shadow
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Checks that layers correctly use global render states.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.global-states.alpha.w.html b/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.global-states.alpha.w.html
new file mode 100644
index 0000000000..694f31e208
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.global-states.alpha.w.html
@@ -0,0 +1,51 @@
+
+
+
+
+Canvas test: 2d.layer.global-states.alpha
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.layer.global-states.alpha
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Checks that layers correctly use global render states.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.global-states.blending-expected.html b/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.global-states.blending-expected.html
new file mode 100644
index 0000000000..33fdf46a28
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.global-states.blending-expected.html
@@ -0,0 +1,31 @@
+
+
+Canvas test: 2d.layer.global-states.blending
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.layer.global-states.blending
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Checks that layers correctly use global render states.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.global-states.blending.html b/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.global-states.blending.html
new file mode 100644
index 0000000000..6a36bb4ba1
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.global-states.blending.html
@@ -0,0 +1,37 @@
+
+
+
+Canvas test: 2d.layer.global-states.blending
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.layer.global-states.blending
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Checks that layers correctly use global render states.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.global-states.blending.shadow-expected.html b/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.global-states.blending.shadow-expected.html
new file mode 100644
index 0000000000..02275c8cc2
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.global-states.blending.shadow-expected.html
@@ -0,0 +1,34 @@
+
+
+Canvas test: 2d.layer.global-states.blending.shadow
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.layer.global-states.blending.shadow
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Checks that layers correctly use global render states.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.global-states.blending.shadow.html b/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.global-states.blending.shadow.html
new file mode 100644
index 0000000000..9ad87aa0cd
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.global-states.blending.shadow.html
@@ -0,0 +1,40 @@
+
+
+
+Canvas test: 2d.layer.global-states.blending.shadow
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.layer.global-states.blending.shadow
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Checks that layers correctly use global render states.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.global-states.blending.shadow.w.html b/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.global-states.blending.shadow.w.html
new file mode 100644
index 0000000000..dc52e9e925
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.global-states.blending.shadow.w.html
@@ -0,0 +1,54 @@
+
+
+
+
+Canvas test: 2d.layer.global-states.blending.shadow
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.layer.global-states.blending.shadow
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Checks that layers correctly use global render states.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.global-states.blending.w.html b/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.global-states.blending.w.html
new file mode 100644
index 0000000000..8964e97713
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.global-states.blending.w.html
@@ -0,0 +1,51 @@
+
+
+
+
+Canvas test: 2d.layer.global-states.blending
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.layer.global-states.blending
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Checks that layers correctly use global render states.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.global-states.composite-expected.html b/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.global-states.composite-expected.html
new file mode 100644
index 0000000000..ed7669c4cf
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.global-states.composite-expected.html
@@ -0,0 +1,31 @@
+
+
+Canvas test: 2d.layer.global-states.composite
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.layer.global-states.composite
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Checks that layers correctly use global render states.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.global-states.composite.html b/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.global-states.composite.html
new file mode 100644
index 0000000000..84fb4b3d95
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.global-states.composite.html
@@ -0,0 +1,37 @@
+
+
+
+Canvas test: 2d.layer.global-states.composite
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.layer.global-states.composite
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Checks that layers correctly use global render states.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.global-states.composite.shadow-expected.html b/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.global-states.composite.shadow-expected.html
new file mode 100644
index 0000000000..e380cccab8
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.global-states.composite.shadow-expected.html
@@ -0,0 +1,34 @@
+
+
+Canvas test: 2d.layer.global-states.composite.shadow
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.layer.global-states.composite.shadow
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Checks that layers correctly use global render states.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.global-states.composite.shadow.html b/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.global-states.composite.shadow.html
new file mode 100644
index 0000000000..2e0883f5af
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.global-states.composite.shadow.html
@@ -0,0 +1,40 @@
+
+
+
+Canvas test: 2d.layer.global-states.composite.shadow
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.layer.global-states.composite.shadow
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Checks that layers correctly use global render states.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.global-states.composite.shadow.w.html b/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.global-states.composite.shadow.w.html
new file mode 100644
index 0000000000..66d4405058
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.global-states.composite.shadow.w.html
@@ -0,0 +1,54 @@
+
+
+
+
+Canvas test: 2d.layer.global-states.composite.shadow
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.layer.global-states.composite.shadow
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Checks that layers correctly use global render states.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.global-states.composite.w.html b/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.global-states.composite.w.html
new file mode 100644
index 0000000000..b695871fcd
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.global-states.composite.w.html
@@ -0,0 +1,51 @@
+
+
+
+
+Canvas test: 2d.layer.global-states.composite
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.layer.global-states.composite
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Checks that layers correctly use global render states.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.global-states.filter.alpha-expected.html b/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.global-states.filter.alpha-expected.html
new file mode 100644
index 0000000000..f304700feb
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.global-states.filter.alpha-expected.html
@@ -0,0 +1,50 @@
+
+
+Canvas test: 2d.layer.global-states.filter.alpha
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.layer.global-states.filter.alpha
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Checks that layers with filters correctly use global render states.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.global-states.filter.alpha.blending-expected.html b/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.global-states.filter.alpha.blending-expected.html
new file mode 100644
index 0000000000..7c91ce4229
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.global-states.filter.alpha.blending-expected.html
@@ -0,0 +1,51 @@
+
+
+Canvas test: 2d.layer.global-states.filter.alpha.blending
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.layer.global-states.filter.alpha.blending
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Checks that layers with filters correctly use global render states.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.global-states.filter.alpha.blending.html b/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.global-states.filter.alpha.blending.html
new file mode 100644
index 0000000000..bf483ccc92
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.global-states.filter.alpha.blending.html
@@ -0,0 +1,41 @@
+
+
+
+Canvas test: 2d.layer.global-states.filter.alpha.blending
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.layer.global-states.filter.alpha.blending
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Checks that layers with filters correctly use global render states.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.global-states.filter.alpha.blending.shadow-expected.html b/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.global-states.filter.alpha.blending.shadow-expected.html
new file mode 100644
index 0000000000..d9c93719b9
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.global-states.filter.alpha.blending.shadow-expected.html
@@ -0,0 +1,54 @@
+
+
+Canvas test: 2d.layer.global-states.filter.alpha.blending.shadow
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.layer.global-states.filter.alpha.blending.shadow
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Checks that layers with filters correctly use global render states.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.global-states.filter.alpha.blending.shadow.html b/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.global-states.filter.alpha.blending.shadow.html
new file mode 100644
index 0000000000..d914a70867
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.global-states.filter.alpha.blending.shadow.html
@@ -0,0 +1,44 @@
+
+
+
+Canvas test: 2d.layer.global-states.filter.alpha.blending.shadow
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.layer.global-states.filter.alpha.blending.shadow
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Checks that layers with filters correctly use global render states.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.global-states.filter.alpha.blending.shadow.w.html b/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.global-states.filter.alpha.blending.shadow.w.html
new file mode 100644
index 0000000000..a1acd0d083
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.global-states.filter.alpha.blending.shadow.w.html
@@ -0,0 +1,58 @@
+
+
+
+
+Canvas test: 2d.layer.global-states.filter.alpha.blending.shadow
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.layer.global-states.filter.alpha.blending.shadow
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Checks that layers with filters correctly use global render states.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.global-states.filter.alpha.blending.w.html b/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.global-states.filter.alpha.blending.w.html
new file mode 100644
index 0000000000..47503d5478
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.global-states.filter.alpha.blending.w.html
@@ -0,0 +1,55 @@
+
+
+
+
+Canvas test: 2d.layer.global-states.filter.alpha.blending
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.layer.global-states.filter.alpha.blending
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Checks that layers with filters correctly use global render states.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.global-states.filter.alpha.composite-expected.html b/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.global-states.filter.alpha.composite-expected.html
new file mode 100644
index 0000000000..8e0d98648e
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.global-states.filter.alpha.composite-expected.html
@@ -0,0 +1,51 @@
+
+
+Canvas test: 2d.layer.global-states.filter.alpha.composite
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.layer.global-states.filter.alpha.composite
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Checks that layers with filters correctly use global render states.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.global-states.filter.alpha.composite.html b/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.global-states.filter.alpha.composite.html
new file mode 100644
index 0000000000..7d4f8ecda5
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.global-states.filter.alpha.composite.html
@@ -0,0 +1,41 @@
+
+
+
+Canvas test: 2d.layer.global-states.filter.alpha.composite
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.layer.global-states.filter.alpha.composite
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Checks that layers with filters correctly use global render states.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.global-states.filter.alpha.composite.shadow-expected.html b/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.global-states.filter.alpha.composite.shadow-expected.html
new file mode 100644
index 0000000000..26d13a4cae
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.global-states.filter.alpha.composite.shadow-expected.html
@@ -0,0 +1,54 @@
+
+
+Canvas test: 2d.layer.global-states.filter.alpha.composite.shadow
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.layer.global-states.filter.alpha.composite.shadow
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Checks that layers with filters correctly use global render states.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.global-states.filter.alpha.composite.shadow.html b/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.global-states.filter.alpha.composite.shadow.html
new file mode 100644
index 0000000000..f75bd251ac
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.global-states.filter.alpha.composite.shadow.html
@@ -0,0 +1,44 @@
+
+
+
+Canvas test: 2d.layer.global-states.filter.alpha.composite.shadow
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.layer.global-states.filter.alpha.composite.shadow
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Checks that layers with filters correctly use global render states.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.global-states.filter.alpha.composite.shadow.w.html b/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.global-states.filter.alpha.composite.shadow.w.html
new file mode 100644
index 0000000000..783a04cafb
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.global-states.filter.alpha.composite.shadow.w.html
@@ -0,0 +1,58 @@
+
+
+
+
+Canvas test: 2d.layer.global-states.filter.alpha.composite.shadow
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.layer.global-states.filter.alpha.composite.shadow
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Checks that layers with filters correctly use global render states.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.global-states.filter.alpha.composite.w.html b/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.global-states.filter.alpha.composite.w.html
new file mode 100644
index 0000000000..ed8af9a0f1
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.global-states.filter.alpha.composite.w.html
@@ -0,0 +1,55 @@
+
+
+
+
+Canvas test: 2d.layer.global-states.filter.alpha.composite
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.layer.global-states.filter.alpha.composite
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Checks that layers with filters correctly use global render states.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.global-states.filter.alpha.html b/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.global-states.filter.alpha.html
new file mode 100644
index 0000000000..4f8954f978
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.global-states.filter.alpha.html
@@ -0,0 +1,40 @@
+
+
+
+Canvas test: 2d.layer.global-states.filter.alpha
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.layer.global-states.filter.alpha
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Checks that layers with filters correctly use global render states.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.global-states.filter.alpha.shadow-expected.html b/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.global-states.filter.alpha.shadow-expected.html
new file mode 100644
index 0000000000..9cc735fd42
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.global-states.filter.alpha.shadow-expected.html
@@ -0,0 +1,53 @@
+
+
+Canvas test: 2d.layer.global-states.filter.alpha.shadow
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.layer.global-states.filter.alpha.shadow
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Checks that layers with filters correctly use global render states.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.global-states.filter.alpha.shadow.html b/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.global-states.filter.alpha.shadow.html
new file mode 100644
index 0000000000..0cfa86a012
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.global-states.filter.alpha.shadow.html
@@ -0,0 +1,43 @@
+
+
+
+Canvas test: 2d.layer.global-states.filter.alpha.shadow
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.layer.global-states.filter.alpha.shadow
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Checks that layers with filters correctly use global render states.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.global-states.filter.alpha.shadow.w.html b/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.global-states.filter.alpha.shadow.w.html
new file mode 100644
index 0000000000..015fe94633
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.global-states.filter.alpha.shadow.w.html
@@ -0,0 +1,57 @@
+
+
+
+
+Canvas test: 2d.layer.global-states.filter.alpha.shadow
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.layer.global-states.filter.alpha.shadow
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Checks that layers with filters correctly use global render states.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.global-states.filter.alpha.w.html b/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.global-states.filter.alpha.w.html
new file mode 100644
index 0000000000..4334fd6c1b
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.global-states.filter.alpha.w.html
@@ -0,0 +1,54 @@
+
+
+
+
+Canvas test: 2d.layer.global-states.filter.alpha
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.layer.global-states.filter.alpha
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Checks that layers with filters correctly use global render states.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.global-states.filter.blending-expected.html b/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.global-states.filter.blending-expected.html
new file mode 100644
index 0000000000..f81dcf72dc
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.global-states.filter.blending-expected.html
@@ -0,0 +1,50 @@
+
+
+Canvas test: 2d.layer.global-states.filter.blending
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.layer.global-states.filter.blending
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Checks that layers with filters correctly use global render states.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.global-states.filter.blending.html b/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.global-states.filter.blending.html
new file mode 100644
index 0000000000..7f3d1a2cb3
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.global-states.filter.blending.html
@@ -0,0 +1,40 @@
+
+
+
+Canvas test: 2d.layer.global-states.filter.blending
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.layer.global-states.filter.blending
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Checks that layers with filters correctly use global render states.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.global-states.filter.blending.shadow-expected.html b/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.global-states.filter.blending.shadow-expected.html
new file mode 100644
index 0000000000..a48485f7e8
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.global-states.filter.blending.shadow-expected.html
@@ -0,0 +1,53 @@
+
+
+Canvas test: 2d.layer.global-states.filter.blending.shadow
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.layer.global-states.filter.blending.shadow
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Checks that layers with filters correctly use global render states.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.global-states.filter.blending.shadow.html b/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.global-states.filter.blending.shadow.html
new file mode 100644
index 0000000000..9b9862e57f
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.global-states.filter.blending.shadow.html
@@ -0,0 +1,43 @@
+
+
+
+Canvas test: 2d.layer.global-states.filter.blending.shadow
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.layer.global-states.filter.blending.shadow
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Checks that layers with filters correctly use global render states.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.global-states.filter.blending.shadow.w.html b/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.global-states.filter.blending.shadow.w.html
new file mode 100644
index 0000000000..1d7e74b64e
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.global-states.filter.blending.shadow.w.html
@@ -0,0 +1,57 @@
+
+
+
+
+Canvas test: 2d.layer.global-states.filter.blending.shadow
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.layer.global-states.filter.blending.shadow
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Checks that layers with filters correctly use global render states.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.global-states.filter.blending.w.html b/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.global-states.filter.blending.w.html
new file mode 100644
index 0000000000..f5ccee1d85
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.global-states.filter.blending.w.html
@@ -0,0 +1,54 @@
+
+
+
+
+Canvas test: 2d.layer.global-states.filter.blending
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.layer.global-states.filter.blending
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Checks that layers with filters correctly use global render states.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.global-states.filter.composite-expected.html b/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.global-states.filter.composite-expected.html
new file mode 100644
index 0000000000..97e85a1593
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.global-states.filter.composite-expected.html
@@ -0,0 +1,50 @@
+
+
+Canvas test: 2d.layer.global-states.filter.composite
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.layer.global-states.filter.composite
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Checks that layers with filters correctly use global render states.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.global-states.filter.composite.html b/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.global-states.filter.composite.html
new file mode 100644
index 0000000000..2e8272b2bf
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.global-states.filter.composite.html
@@ -0,0 +1,40 @@
+
+
+
+Canvas test: 2d.layer.global-states.filter.composite
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.layer.global-states.filter.composite
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Checks that layers with filters correctly use global render states.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.global-states.filter.composite.shadow-expected.html b/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.global-states.filter.composite.shadow-expected.html
new file mode 100644
index 0000000000..79191ee391
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.global-states.filter.composite.shadow-expected.html
@@ -0,0 +1,53 @@
+
+
+Canvas test: 2d.layer.global-states.filter.composite.shadow
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.layer.global-states.filter.composite.shadow
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Checks that layers with filters correctly use global render states.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.global-states.filter.composite.shadow.html b/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.global-states.filter.composite.shadow.html
new file mode 100644
index 0000000000..077041a294
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.global-states.filter.composite.shadow.html
@@ -0,0 +1,43 @@
+
+
+
+Canvas test: 2d.layer.global-states.filter.composite.shadow
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.layer.global-states.filter.composite.shadow
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Checks that layers with filters correctly use global render states.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.global-states.filter.composite.shadow.w.html b/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.global-states.filter.composite.shadow.w.html
new file mode 100644
index 0000000000..b162354da4
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.global-states.filter.composite.shadow.w.html
@@ -0,0 +1,57 @@
+
+
+
+
+Canvas test: 2d.layer.global-states.filter.composite.shadow
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.layer.global-states.filter.composite.shadow
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Checks that layers with filters correctly use global render states.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.global-states.filter.composite.w.html b/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.global-states.filter.composite.w.html
new file mode 100644
index 0000000000..b415839266
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.global-states.filter.composite.w.html
@@ -0,0 +1,54 @@
+
+
+
+
+Canvas test: 2d.layer.global-states.filter.composite
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.layer.global-states.filter.composite
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Checks that layers with filters correctly use global render states.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.global-states.filter.no-global-states-expected.html b/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.global-states.filter.no-global-states-expected.html
new file mode 100644
index 0000000000..e56fe0b360
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.global-states.filter.no-global-states-expected.html
@@ -0,0 +1,50 @@
+
+
+Canvas test: 2d.layer.global-states.filter.no-global-states
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.layer.global-states.filter.no-global-states
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Checks that layers with filters correctly use global render states.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.global-states.filter.no-global-states.html b/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.global-states.filter.no-global-states.html
new file mode 100644
index 0000000000..ccae63a26a
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.global-states.filter.no-global-states.html
@@ -0,0 +1,40 @@
+
+
+
+Canvas test: 2d.layer.global-states.filter.no-global-states
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.layer.global-states.filter.no-global-states
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Checks that layers with filters correctly use global render states.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.global-states.filter.no-global-states.w.html b/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.global-states.filter.no-global-states.w.html
new file mode 100644
index 0000000000..6ce768ad26
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.global-states.filter.no-global-states.w.html
@@ -0,0 +1,54 @@
+
+
+
+
+Canvas test: 2d.layer.global-states.filter.no-global-states
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.layer.global-states.filter.no-global-states
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Checks that layers with filters correctly use global render states.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.global-states.filter.shadow-expected.html b/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.global-states.filter.shadow-expected.html
new file mode 100644
index 0000000000..59cf16fa87
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.global-states.filter.shadow-expected.html
@@ -0,0 +1,52 @@
+
+
+Canvas test: 2d.layer.global-states.filter.shadow
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.layer.global-states.filter.shadow
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Checks that layers with filters correctly use global render states.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.global-states.filter.shadow.html b/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.global-states.filter.shadow.html
new file mode 100644
index 0000000000..9a20e39fd5
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.global-states.filter.shadow.html
@@ -0,0 +1,42 @@
+
+
+
+Canvas test: 2d.layer.global-states.filter.shadow
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.layer.global-states.filter.shadow
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Checks that layers with filters correctly use global render states.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.global-states.filter.shadow.w.html b/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.global-states.filter.shadow.w.html
new file mode 100644
index 0000000000..26bdf75587
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.global-states.filter.shadow.w.html
@@ -0,0 +1,56 @@
+
+
+
+
+Canvas test: 2d.layer.global-states.filter.shadow
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.layer.global-states.filter.shadow
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Checks that layers with filters correctly use global render states.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.global-states.no-global-states-expected.html b/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.global-states.no-global-states-expected.html
new file mode 100644
index 0000000000..b91a2ae8b5
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.global-states.no-global-states-expected.html
@@ -0,0 +1,31 @@
+
+
+Canvas test: 2d.layer.global-states.no-global-states
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.layer.global-states.no-global-states
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Checks that layers correctly use global render states.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.global-states.no-global-states.html b/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.global-states.no-global-states.html
new file mode 100644
index 0000000000..c8a9815381
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.global-states.no-global-states.html
@@ -0,0 +1,37 @@
+
+
+
+Canvas test: 2d.layer.global-states.no-global-states
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.layer.global-states.no-global-states
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Checks that layers correctly use global render states.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.global-states.no-global-states.w.html b/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.global-states.no-global-states.w.html
new file mode 100644
index 0000000000..db03a3fd0c
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.global-states.no-global-states.w.html
@@ -0,0 +1,51 @@
+
+
+
+
+Canvas test: 2d.layer.global-states.no-global-states
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.layer.global-states.no-global-states
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Checks that layers correctly use global render states.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.global-states.shadow-expected.html b/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.global-states.shadow-expected.html
new file mode 100644
index 0000000000..ba56644d6c
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.global-states.shadow-expected.html
@@ -0,0 +1,33 @@
+
+
+Canvas test: 2d.layer.global-states.shadow
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.layer.global-states.shadow
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Checks that layers correctly use global render states.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.global-states.shadow.html b/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.global-states.shadow.html
new file mode 100644
index 0000000000..41a832c516
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.global-states.shadow.html
@@ -0,0 +1,39 @@
+
+
+
+Canvas test: 2d.layer.global-states.shadow
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.layer.global-states.shadow
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Checks that layers correctly use global render states.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.global-states.shadow.w.html b/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.global-states.shadow.w.html
new file mode 100644
index 0000000000..7b78f4b739
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.global-states.shadow.w.html
@@ -0,0 +1,53 @@
+
+
+
+
+Canvas test: 2d.layer.global-states.shadow
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.layer.global-states.shadow
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Checks that layers correctly use global render states.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.nested-expected.html b/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.nested-expected.html
new file mode 100644
index 0000000000..65525d4d6a
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.nested-expected.html
@@ -0,0 +1,37 @@
+
+
+Canvas test: 2d.layer.nested
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.layer.nested
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Tests nested canvas layers.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.nested.html b/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.nested.html
new file mode 100644
index 0000000000..9e5b7d5826
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.nested.html
@@ -0,0 +1,39 @@
+
+
+
+Canvas test: 2d.layer.nested
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.layer.nested
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Tests nested canvas layers.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.nested.w.html b/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.nested.w.html
new file mode 100644
index 0000000000..99e7390609
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.nested.w.html
@@ -0,0 +1,53 @@
+
+
+
+
+Canvas test: 2d.layer.nested
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.layer.nested
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Tests nested canvas layers.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.render-opportunities.convertToBlob-expected.html b/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.render-opportunities.convertToBlob-expected.html
new file mode 100644
index 0000000000..1e61775165
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.render-opportunities.convertToBlob-expected.html
@@ -0,0 +1,35 @@
+
+
+
+Canvas test: 2d.layer.render-opportunities.convertToBlob
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.layer.render-opportunities.convertToBlob
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Check that layers state stack is flushed and rebuilt on frame renders.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
\ No newline at end of file
diff --git a/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.render-opportunities.convertToBlob.html b/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.render-opportunities.convertToBlob.html
new file mode 100644
index 0000000000..c1a139a3de
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.render-opportunities.convertToBlob.html
@@ -0,0 +1,38 @@
+
+
+
+
+Canvas test: 2d.layer.render-opportunities.convertToBlob
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.layer.render-opportunities.convertToBlob
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Check that layers state stack is flushed and rebuilt on frame renders.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
\ No newline at end of file
diff --git a/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.render-opportunities.convertToBlob.w.html b/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.render-opportunities.convertToBlob.w.html
new file mode 100644
index 0000000000..404fef3ad6
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.render-opportunities.convertToBlob.w.html
@@ -0,0 +1,49 @@
+
+
+
+
+Canvas test: 2d.layer.render-opportunities.convertToBlob
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.layer.render-opportunities.convertToBlob
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Check that layers state stack is flushed and rebuilt on frame renders.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.render-opportunities.createImageBitmap-expected.html b/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.render-opportunities.createImageBitmap-expected.html
new file mode 100644
index 0000000000..8ce0c51e8e
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.render-opportunities.createImageBitmap-expected.html
@@ -0,0 +1,32 @@
+
+
+Canvas test: 2d.layer.render-opportunities.createImageBitmap
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.layer.render-opportunities.createImageBitmap
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Check that layers state stack is flushed and rebuilt on frame renders.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.render-opportunities.createImageBitmap.html b/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.render-opportunities.createImageBitmap.html
new file mode 100644
index 0000000000..876b027170
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.render-opportunities.createImageBitmap.html
@@ -0,0 +1,35 @@
+
+
+
+Canvas test: 2d.layer.render-opportunities.createImageBitmap
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.layer.render-opportunities.createImageBitmap
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Check that layers state stack is flushed and rebuilt on frame renders.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.render-opportunities.createImageBitmap.w.html b/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.render-opportunities.createImageBitmap.w.html
new file mode 100644
index 0000000000..9a89492e39
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.render-opportunities.createImageBitmap.w.html
@@ -0,0 +1,49 @@
+
+
+
+
+Canvas test: 2d.layer.render-opportunities.createImageBitmap
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.layer.render-opportunities.createImageBitmap
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Check that layers state stack is flushed and rebuilt on frame renders.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.render-opportunities.drawImage-expected.html b/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.render-opportunities.drawImage-expected.html
new file mode 100644
index 0000000000..1ddc6d1b44
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.render-opportunities.drawImage-expected.html
@@ -0,0 +1,32 @@
+
+
+Canvas test: 2d.layer.render-opportunities.drawImage
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.layer.render-opportunities.drawImage
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Check that layers state stack is flushed and rebuilt on frame renders.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.render-opportunities.drawImage.html b/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.render-opportunities.drawImage.html
new file mode 100644
index 0000000000..dd17820607
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.render-opportunities.drawImage.html
@@ -0,0 +1,37 @@
+
+
+
+Canvas test: 2d.layer.render-opportunities.drawImage
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.layer.render-opportunities.drawImage
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Check that layers state stack is flushed and rebuilt on frame renders.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.render-opportunities.drawImage.w.html b/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.render-opportunities.drawImage.w.html
new file mode 100644
index 0000000000..80fbfbd272
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.render-opportunities.drawImage.w.html
@@ -0,0 +1,51 @@
+
+
+
+
+Canvas test: 2d.layer.render-opportunities.drawImage
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.layer.render-opportunities.drawImage
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Check that layers state stack is flushed and rebuilt on frame renders.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.render-opportunities.getImageData-expected.html b/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.render-opportunities.getImageData-expected.html
new file mode 100644
index 0000000000..ea0e78e0f2
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.render-opportunities.getImageData-expected.html
@@ -0,0 +1,32 @@
+
+
+Canvas test: 2d.layer.render-opportunities.getImageData
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.layer.render-opportunities.getImageData
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Check that layers state stack is flushed and rebuilt on frame renders.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.render-opportunities.getImageData.html b/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.render-opportunities.getImageData.html
new file mode 100644
index 0000000000..b6f3c1b562
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.render-opportunities.getImageData.html
@@ -0,0 +1,35 @@
+
+
+
+Canvas test: 2d.layer.render-opportunities.getImageData
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.layer.render-opportunities.getImageData
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Check that layers state stack is flushed and rebuilt on frame renders.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.render-opportunities.getImageData.w.html b/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.render-opportunities.getImageData.w.html
new file mode 100644
index 0000000000..187eb0fce9
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.render-opportunities.getImageData.w.html
@@ -0,0 +1,49 @@
+
+
+
+
+Canvas test: 2d.layer.render-opportunities.getImageData
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.layer.render-opportunities.getImageData
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Check that layers state stack is flushed and rebuilt on frame renders.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.render-opportunities.putImageData-expected.html b/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.render-opportunities.putImageData-expected.html
new file mode 100644
index 0000000000..3d63bbe776
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.render-opportunities.putImageData-expected.html
@@ -0,0 +1,32 @@
+
+
+Canvas test: 2d.layer.render-opportunities.putImageData
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.layer.render-opportunities.putImageData
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Check that layers state stack is flushed and rebuilt on frame renders.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.render-opportunities.putImageData.html b/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.render-opportunities.putImageData.html
new file mode 100644
index 0000000000..b460015613
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.render-opportunities.putImageData.html
@@ -0,0 +1,37 @@
+
+
+
+Canvas test: 2d.layer.render-opportunities.putImageData
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.layer.render-opportunities.putImageData
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Check that layers state stack is flushed and rebuilt on frame renders.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.render-opportunities.putImageData.w.html b/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.render-opportunities.putImageData.w.html
new file mode 100644
index 0000000000..9ffac071c3
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.render-opportunities.putImageData.w.html
@@ -0,0 +1,51 @@
+
+
+
+
+Canvas test: 2d.layer.render-opportunities.putImageData
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.layer.render-opportunities.putImageData
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Check that layers state stack is flushed and rebuilt on frame renders.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.render-opportunities.transferToImageBitmap-expected.html b/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.render-opportunities.transferToImageBitmap-expected.html
new file mode 100644
index 0000000000..2833849da6
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.render-opportunities.transferToImageBitmap-expected.html
@@ -0,0 +1,24 @@
+
+
+Canvas test: 2d.layer.render-opportunities.transferToImageBitmap
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.layer.render-opportunities.transferToImageBitmap
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Checks that transferToImageBitmap flushes and rebuilds the state stack.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.render-opportunities.transferToImageBitmap.html b/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.render-opportunities.transferToImageBitmap.html
new file mode 100644
index 0000000000..27830644b0
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.render-opportunities.transferToImageBitmap.html
@@ -0,0 +1,36 @@
+
+
+
+Canvas test: 2d.layer.render-opportunities.transferToImageBitmap
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.layer.render-opportunities.transferToImageBitmap
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Checks that transferToImageBitmap flushes and rebuilds the state stack.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.render-opportunities.transferToImageBitmap.w.html b/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.render-opportunities.transferToImageBitmap.w.html
new file mode 100644
index 0000000000..06e016020d
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.render-opportunities.transferToImageBitmap.w.html
@@ -0,0 +1,50 @@
+
+
+
+
+Canvas test: 2d.layer.render-opportunities.transferToImageBitmap
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.layer.render-opportunities.transferToImageBitmap
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Checks that transferToImageBitmap flushes and rebuilds the state stack.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.restore-style-expected.html b/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.restore-style-expected.html
new file mode 100644
index 0000000000..1d0ac3558d
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.restore-style-expected.html
@@ -0,0 +1,24 @@
+
+
+Canvas test: 2d.layer.restore-style
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.layer.restore-style
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Test that ensure layers restores style values upon endLayer.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.restore-style.html b/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.restore-style.html
new file mode 100644
index 0000000000..a3593cd2a8
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.restore-style.html
@@ -0,0 +1,28 @@
+
+
+
+
+Canvas test: 2d.layer.restore-style
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.layer.restore-style
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Test that ensure layers restores style values upon endLayer.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.restore-style.w.html b/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.restore-style.w.html
new file mode 100644
index 0000000000..a66fc2bc59
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.restore-style.w.html
@@ -0,0 +1,42 @@
+
+
+
+
+
+Canvas test: 2d.layer.restore-style
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.layer.restore-style
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Test that ensure layers restores style values upon endLayer.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.several-complex-expected.html b/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.several-complex-expected.html
new file mode 100644
index 0000000000..84ad624474
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.several-complex-expected.html
@@ -0,0 +1,34 @@
+
+
+Canvas test: 2d.layer.several-complex
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.layer.several-complex
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Test to ensure beginlayer works for filter, alpha and shadow, even with consecutive layers.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.several-complex.html b/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.several-complex.html
new file mode 100644
index 0000000000..c4b5028280
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.several-complex.html
@@ -0,0 +1,37 @@
+
+
+
+
+Canvas test: 2d.layer.several-complex
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.layer.several-complex
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Test to ensure beginlayer works for filter, alpha and shadow, even with consecutive layers.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.several-complex.w.html b/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.several-complex.w.html
new file mode 100644
index 0000000000..114c5e0686
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.several-complex.w.html
@@ -0,0 +1,51 @@
+
+
+
+
+
+Canvas test: 2d.layer.several-complex
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.layer.several-complex
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Test to ensure beginlayer works for filter, alpha and shadow, even with consecutive layers.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.unclosed-expected.html b/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.unclosed-expected.html
new file mode 100644
index 0000000000..c41b253c95
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.unclosed-expected.html
@@ -0,0 +1,23 @@
+
+
+Canvas test: 2d.layer.unclosed
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.layer.unclosed
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Check that layers are rendered even if not closed.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.unclosed.html b/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.unclosed.html
new file mode 100644
index 0000000000..689ee801cf
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.unclosed.html
@@ -0,0 +1,25 @@
+
+
+
+Canvas test: 2d.layer.unclosed
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.layer.unclosed
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Check that layers are rendered even if not closed.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.unclosed.w.html b/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.unclosed.w.html
new file mode 100644
index 0000000000..0c7812e88c
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.unclosed.w.html
@@ -0,0 +1,39 @@
+
+
+
+
+Canvas test: 2d.layer.unclosed
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.layer.unclosed
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Check that layers are rendered even if not closed.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/line-styles/2d.line.cap.butt.html b/testing/web-platform/tests/html/canvas/offscreen/line-styles/2d.line.cap.butt.html
new file mode 100644
index 0000000000..145e145cb4
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/line-styles/2d.line.cap.butt.html
@@ -0,0 +1,61 @@
+
+
+OffscreenCanvas test: 2d.line.cap.butt
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.line.cap.butt
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              lineCap 'butt' is rendered correctly
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/line-styles/2d.line.cap.butt.worker.js b/testing/web-platform/tests/html/canvas/offscreen/line-styles/2d.line.cap.butt.worker.js
new file mode 100644
index 0000000000..127393790c
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/line-styles/2d.line.cap.butt.worker.js
@@ -0,0 +1,56 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.line.cap.butt
+// Description:lineCap 'butt' is rendered correctly
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("lineCap 'butt' is rendered correctly");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#0f0';
+  ctx.fillRect(0, 0, 100, 50);
+
+  ctx.lineCap = 'butt';
+  ctx.lineWidth = 20;
+
+  ctx.fillStyle = '#f00';
+  ctx.strokeStyle = '#0f0';
+  ctx.fillRect(15, 15, 20, 20);
+  ctx.beginPath();
+  ctx.moveTo(25, 15);
+  ctx.lineTo(25, 35);
+  ctx.stroke();
+
+  ctx.fillStyle = '#0f0';
+  ctx.strokeStyle = '#f00';
+  ctx.beginPath();
+  ctx.moveTo(75, 15);
+  ctx.lineTo(75, 35);
+  ctx.stroke();
+  ctx.fillRect(65, 15, 20, 20);
+
+  _assertPixel(canvas, 25,14, 0,255,0,255);
+  _assertPixel(canvas, 25,15, 0,255,0,255);
+  _assertPixel(canvas, 25,16, 0,255,0,255);
+  _assertPixel(canvas, 25,34, 0,255,0,255);
+  _assertPixel(canvas, 25,35, 0,255,0,255);
+  _assertPixel(canvas, 25,36, 0,255,0,255);
+
+  _assertPixel(canvas, 75,14, 0,255,0,255);
+  _assertPixel(canvas, 75,15, 0,255,0,255);
+  _assertPixel(canvas, 75,16, 0,255,0,255);
+  _assertPixel(canvas, 75,34, 0,255,0,255);
+  _assertPixel(canvas, 75,35, 0,255,0,255);
+  _assertPixel(canvas, 75,36, 0,255,0,255);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/line-styles/2d.line.cap.closed.html b/testing/web-platform/tests/html/canvas/offscreen/line-styles/2d.line.cap.closed.html
new file mode 100644
index 0000000000..edddeb08e7
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/line-styles/2d.line.cap.closed.html
@@ -0,0 +1,46 @@
+
+
+OffscreenCanvas test: 2d.line.cap.closed
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.line.cap.closed
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Line caps are not drawn at the corners of an unclosed rectangle
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/line-styles/2d.line.cap.closed.worker.js b/testing/web-platform/tests/html/canvas/offscreen/line-styles/2d.line.cap.closed.worker.js
new file mode 100644
index 0000000000..b8357316e4
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/line-styles/2d.line.cap.closed.worker.js
@@ -0,0 +1,41 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.line.cap.closed
+// Description:Line caps are not drawn at the corners of an unclosed rectangle
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("Line caps are not drawn at the corners of an unclosed rectangle");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#0f0';
+  ctx.strokeStyle = '#f00';
+  ctx.fillRect(0, 0, 100, 50);
+
+  ctx.lineJoin = 'bevel';
+  ctx.lineCap = 'square';
+  ctx.lineWidth = 400;
+
+  ctx.beginPath();
+  ctx.moveTo(200, 200);
+  ctx.lineTo(200, 1000);
+  ctx.lineTo(1000, 1000);
+  ctx.lineTo(1000, 200);
+  ctx.closePath();
+  ctx.stroke();
+
+  _assertPixel(canvas, 1,1, 0,255,0,255);
+  _assertPixel(canvas, 48,1, 0,255,0,255);
+  _assertPixel(canvas, 48,48, 0,255,0,255);
+  _assertPixel(canvas, 1,48, 0,255,0,255);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/line-styles/2d.line.cap.invalid.html b/testing/web-platform/tests/html/canvas/offscreen/line-styles/2d.line.cap.invalid.html
new file mode 100644
index 0000000000..2054bbc515
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/line-styles/2d.line.cap.invalid.html
@@ -0,0 +1,52 @@
+
+
+OffscreenCanvas test: 2d.line.cap.invalid
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.line.cap.invalid
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Setting lineCap to invalid values is ignored
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/line-styles/2d.line.cap.invalid.worker.js b/testing/web-platform/tests/html/canvas/offscreen/line-styles/2d.line.cap.invalid.worker.js
new file mode 100644
index 0000000000..813ceb7f66
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/line-styles/2d.line.cap.invalid.worker.js
@@ -0,0 +1,47 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.line.cap.invalid
+// Description:Setting lineCap to invalid values is ignored
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("Setting lineCap to invalid values is ignored");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.lineCap = 'butt'
+  _assertSame(ctx.lineCap, 'butt', "ctx.lineCap", "'butt'");
+
+  ctx.lineCap = 'butt';
+  ctx.lineCap = 'invalid';
+  _assertSame(ctx.lineCap, 'butt', "ctx.lineCap", "'butt'");
+
+  ctx.lineCap = 'butt';
+  ctx.lineCap = 'ROUND';
+  _assertSame(ctx.lineCap, 'butt', "ctx.lineCap", "'butt'");
+
+  ctx.lineCap = 'butt';
+  ctx.lineCap = 'round\0';
+  _assertSame(ctx.lineCap, 'butt', "ctx.lineCap", "'butt'");
+
+  ctx.lineCap = 'butt';
+  ctx.lineCap = 'round ';
+  _assertSame(ctx.lineCap, 'butt', "ctx.lineCap", "'butt'");
+
+  ctx.lineCap = 'butt';
+  ctx.lineCap = "";
+  _assertSame(ctx.lineCap, 'butt', "ctx.lineCap", "'butt'");
+
+  ctx.lineCap = 'butt';
+  ctx.lineCap = 'bevel';
+  _assertSame(ctx.lineCap, 'butt', "ctx.lineCap", "'butt'");
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/line-styles/2d.line.cap.open.html b/testing/web-platform/tests/html/canvas/offscreen/line-styles/2d.line.cap.open.html
new file mode 100644
index 0000000000..f26fbc686c
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/line-styles/2d.line.cap.open.html
@@ -0,0 +1,46 @@
+
+
+OffscreenCanvas test: 2d.line.cap.open
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.line.cap.open
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Line caps are drawn at the corners of an unclosed rectangle
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/line-styles/2d.line.cap.open.worker.js b/testing/web-platform/tests/html/canvas/offscreen/line-styles/2d.line.cap.open.worker.js
new file mode 100644
index 0000000000..169010ac2a
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/line-styles/2d.line.cap.open.worker.js
@@ -0,0 +1,41 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.line.cap.open
+// Description:Line caps are drawn at the corners of an unclosed rectangle
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("Line caps are drawn at the corners of an unclosed rectangle");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#f00';
+  ctx.strokeStyle = '#0f0';
+  ctx.fillRect(0, 0, 100, 50);
+
+  ctx.lineJoin = 'bevel';
+  ctx.lineCap = 'square';
+  ctx.lineWidth = 400;
+
+  ctx.beginPath();
+  ctx.moveTo(200, 200);
+  ctx.lineTo(200, 1000);
+  ctx.lineTo(1000, 1000);
+  ctx.lineTo(1000, 200);
+  ctx.lineTo(200, 200);
+  ctx.stroke();
+
+  _assertPixel(canvas, 1,1, 0,255,0,255);
+  _assertPixel(canvas, 48,1, 0,255,0,255);
+  _assertPixel(canvas, 48,48, 0,255,0,255);
+  _assertPixel(canvas, 1,48, 0,255,0,255);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/line-styles/2d.line.cap.round.html b/testing/web-platform/tests/html/canvas/offscreen/line-styles/2d.line.cap.round.html
new file mode 100644
index 0000000000..31f5ba5423
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/line-styles/2d.line.cap.round.html
@@ -0,0 +1,77 @@
+
+
+OffscreenCanvas test: 2d.line.cap.round
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.line.cap.round
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              lineCap 'round' is rendered correctly
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/line-styles/2d.line.cap.round.worker.js b/testing/web-platform/tests/html/canvas/offscreen/line-styles/2d.line.cap.round.worker.js
new file mode 100644
index 0000000000..a8d9c1b92f
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/line-styles/2d.line.cap.round.worker.js
@@ -0,0 +1,72 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.line.cap.round
+// Description:lineCap 'round' is rendered correctly
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("lineCap 'round' is rendered correctly");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#0f0';
+  ctx.fillRect(0, 0, 100, 50);
+
+  var tol = 1; // tolerance to avoid antialiasing artifacts
+
+  ctx.lineCap = 'round';
+  ctx.lineWidth = 20;
+
+
+  ctx.fillStyle = '#f00';
+  ctx.strokeStyle = '#0f0';
+
+  ctx.beginPath();
+  ctx.moveTo(35-tol, 15);
+  ctx.arc(25, 15, 10-tol, 0, Math.PI, true);
+  ctx.arc(25, 35, 10-tol, Math.PI, 0, true);
+  ctx.fill();
+
+  ctx.beginPath();
+  ctx.moveTo(25, 15);
+  ctx.lineTo(25, 35);
+  ctx.stroke();
+
+
+  ctx.fillStyle = '#0f0';
+  ctx.strokeStyle = '#f00';
+
+  ctx.beginPath();
+  ctx.moveTo(75, 15);
+  ctx.lineTo(75, 35);
+  ctx.stroke();
+
+  ctx.beginPath();
+  ctx.moveTo(85+tol, 15);
+  ctx.arc(75, 15, 10+tol, 0, Math.PI, true);
+  ctx.arc(75, 35, 10+tol, Math.PI, 0, true);
+  ctx.fill();
+
+  _assertPixel(canvas, 17,6, 0,255,0,255);
+  _assertPixel(canvas, 25,6, 0,255,0,255);
+  _assertPixel(canvas, 32,6, 0,255,0,255);
+  _assertPixel(canvas, 17,43, 0,255,0,255);
+  _assertPixel(canvas, 25,43, 0,255,0,255);
+  _assertPixel(canvas, 32,43, 0,255,0,255);
+
+  _assertPixel(canvas, 67,6, 0,255,0,255);
+  _assertPixel(canvas, 75,6, 0,255,0,255);
+  _assertPixel(canvas, 82,6, 0,255,0,255);
+  _assertPixel(canvas, 67,43, 0,255,0,255);
+  _assertPixel(canvas, 75,43, 0,255,0,255);
+  _assertPixel(canvas, 82,43, 0,255,0,255);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/line-styles/2d.line.cap.square.html b/testing/web-platform/tests/html/canvas/offscreen/line-styles/2d.line.cap.square.html
new file mode 100644
index 0000000000..0d2988877d
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/line-styles/2d.line.cap.square.html
@@ -0,0 +1,61 @@
+
+
+OffscreenCanvas test: 2d.line.cap.square
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.line.cap.square
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              lineCap 'square' is rendered correctly
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/line-styles/2d.line.cap.square.worker.js b/testing/web-platform/tests/html/canvas/offscreen/line-styles/2d.line.cap.square.worker.js
new file mode 100644
index 0000000000..6776e9891b
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/line-styles/2d.line.cap.square.worker.js
@@ -0,0 +1,56 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.line.cap.square
+// Description:lineCap 'square' is rendered correctly
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("lineCap 'square' is rendered correctly");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#0f0';
+  ctx.fillRect(0, 0, 100, 50);
+
+  ctx.lineCap = 'square';
+  ctx.lineWidth = 20;
+
+  ctx.fillStyle = '#f00';
+  ctx.strokeStyle = '#0f0';
+  ctx.fillRect(15, 5, 20, 40);
+  ctx.beginPath();
+  ctx.moveTo(25, 15);
+  ctx.lineTo(25, 35);
+  ctx.stroke();
+
+  ctx.fillStyle = '#0f0';
+  ctx.strokeStyle = '#f00';
+  ctx.beginPath();
+  ctx.moveTo(75, 15);
+  ctx.lineTo(75, 35);
+  ctx.stroke();
+  ctx.fillRect(65, 5, 20, 40);
+
+  _assertPixel(canvas, 25,4, 0,255,0,255);
+  _assertPixel(canvas, 25,5, 0,255,0,255);
+  _assertPixel(canvas, 25,6, 0,255,0,255);
+  _assertPixel(canvas, 25,44, 0,255,0,255);
+  _assertPixel(canvas, 25,45, 0,255,0,255);
+  _assertPixel(canvas, 25,46, 0,255,0,255);
+
+  _assertPixel(canvas, 75,4, 0,255,0,255);
+  _assertPixel(canvas, 75,5, 0,255,0,255);
+  _assertPixel(canvas, 75,6, 0,255,0,255);
+  _assertPixel(canvas, 75,44, 0,255,0,255);
+  _assertPixel(canvas, 75,45, 0,255,0,255);
+  _assertPixel(canvas, 75,46, 0,255,0,255);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/line-styles/2d.line.cap.valid.html b/testing/web-platform/tests/html/canvas/offscreen/line-styles/2d.line.cap.valid.html
new file mode 100644
index 0000000000..6334891f56
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/line-styles/2d.line.cap.valid.html
@@ -0,0 +1,34 @@
+
+
+OffscreenCanvas test: 2d.line.cap.valid
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.line.cap.valid
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Setting lineCap to valid values works
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/line-styles/2d.line.cap.valid.worker.js b/testing/web-platform/tests/html/canvas/offscreen/line-styles/2d.line.cap.valid.worker.js
new file mode 100644
index 0000000000..0010fd61dd
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/line-styles/2d.line.cap.valid.worker.js
@@ -0,0 +1,29 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.line.cap.valid
+// Description:Setting lineCap to valid values works
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("Setting lineCap to valid values works");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.lineCap = 'butt'
+  _assertSame(ctx.lineCap, 'butt', "ctx.lineCap", "'butt'");
+
+  ctx.lineCap = 'round';
+  _assertSame(ctx.lineCap, 'round', "ctx.lineCap", "'round'");
+
+  ctx.lineCap = 'square';
+  _assertSame(ctx.lineCap, 'square', "ctx.lineCap", "'square'");
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/line-styles/2d.line.cross.html b/testing/web-platform/tests/html/canvas/offscreen/line-styles/2d.line.cross.html
new file mode 100644
index 0000000000..83e2a758fd
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/line-styles/2d.line.cross.html
@@ -0,0 +1,43 @@
+
+
+OffscreenCanvas test: 2d.line.cross
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.line.cross
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/line-styles/2d.line.cross.worker.js b/testing/web-platform/tests/html/canvas/offscreen/line-styles/2d.line.cross.worker.js
new file mode 100644
index 0000000000..5dc95c25f1
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/line-styles/2d.line.cross.worker.js
@@ -0,0 +1,38 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.line.cross
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#0f0';
+  ctx.fillRect(0, 0, 100, 50);
+
+  ctx.lineWidth = 200;
+  ctx.lineJoin = 'bevel';
+
+  ctx.strokeStyle = '#f00';
+  ctx.beginPath();
+  ctx.moveTo(110, 50);
+  ctx.lineTo(110, 60);
+  ctx.lineTo(100, 60);
+  ctx.stroke();
+
+  _assertPixel(canvas, 1,1, 0,255,0,255);
+  _assertPixel(canvas, 48,1, 0,255,0,255);
+  _assertPixel(canvas, 48,48, 0,255,0,255);
+  _assertPixel(canvas, 1,48, 0,255,0,255);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/line-styles/2d.line.defaults.html b/testing/web-platform/tests/html/canvas/offscreen/line-styles/2d.line.defaults.html
new file mode 100644
index 0000000000..7f50257288
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/line-styles/2d.line.defaults.html
@@ -0,0 +1,30 @@
+
+
+OffscreenCanvas test: 2d.line.defaults
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.line.defaults
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/line-styles/2d.line.defaults.worker.js b/testing/web-platform/tests/html/canvas/offscreen/line-styles/2d.line.defaults.worker.js
new file mode 100644
index 0000000000..1a59b81027
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/line-styles/2d.line.defaults.worker.js
@@ -0,0 +1,25 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.line.defaults
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  _assertSame(ctx.lineWidth, 1, "ctx.lineWidth", "1");
+  _assertSame(ctx.lineCap, 'butt', "ctx.lineCap", "'butt'");
+  _assertSame(ctx.lineJoin, 'miter', "ctx.lineJoin", "'miter'");
+  _assertSame(ctx.miterLimit, 10, "ctx.miterLimit", "10");
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/line-styles/2d.line.invalid.strokestyle.html b/testing/web-platform/tests/html/canvas/offscreen/line-styles/2d.line.invalid.strokestyle.html
new file mode 100644
index 0000000000..fa67e3b3f8
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/line-styles/2d.line.invalid.strokestyle.html
@@ -0,0 +1,37 @@
+
+
+OffscreenCanvas test: 2d.line.invalid.strokestyle
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.line.invalid.strokestyle
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Verify correct behavior of canvas on an invalid strokeStyle()
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/line-styles/2d.line.invalid.strokestyle.worker.js b/testing/web-platform/tests/html/canvas/offscreen/line-styles/2d.line.invalid.strokestyle.worker.js
new file mode 100644
index 0000000000..5726b1835a
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/line-styles/2d.line.invalid.strokestyle.worker.js
@@ -0,0 +1,32 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.line.invalid.strokestyle
+// Description:Verify correct behavior of canvas on an invalid strokeStyle()
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("Verify correct behavior of canvas on an invalid strokeStyle()");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.strokeStyle = 'rgb(0, 255, 0)';
+  ctx.strokeStyle = 'nonsense';
+  ctx.lineWidth = 200;
+  ctx.moveTo(0,100);
+  ctx.lineTo(200,100);
+  ctx.stroke();
+  var imageData = ctx.getImageData(0, 0, 200, 200);
+  var imgdata = imageData.data;
+  _assert(imgdata[4] == 0, "imgdata[\""+(4)+"\"] == 0");
+  _assert(imgdata[5] == 255, "imgdata[\""+(5)+"\"] == 255");
+  _assert(imgdata[6] == 0, "imgdata[\""+(6)+"\"] == 0");
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/line-styles/2d.line.join.bevel.html b/testing/web-platform/tests/html/canvas/offscreen/line-styles/2d.line.join.bevel.html
new file mode 100644
index 0000000000..70e3896281
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/line-styles/2d.line.join.bevel.html
@@ -0,0 +1,80 @@
+
+
+OffscreenCanvas test: 2d.line.join.bevel
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.line.join.bevel
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              lineJoin 'bevel' is rendered correctly
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/line-styles/2d.line.join.bevel.worker.js b/testing/web-platform/tests/html/canvas/offscreen/line-styles/2d.line.join.bevel.worker.js
new file mode 100644
index 0000000000..efd884debe
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/line-styles/2d.line.join.bevel.worker.js
@@ -0,0 +1,75 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.line.join.bevel
+// Description:lineJoin 'bevel' is rendered correctly
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("lineJoin 'bevel' is rendered correctly");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#0f0';
+  ctx.fillRect(0, 0, 100, 50);
+
+  var tol = 1; // tolerance to avoid antialiasing artifacts
+
+  ctx.lineJoin = 'bevel';
+  ctx.lineWidth = 20;
+
+  ctx.fillStyle = '#f00';
+  ctx.strokeStyle = '#0f0';
+
+  ctx.fillRect(10, 10, 20, 20);
+  ctx.fillRect(20, 20, 20, 20);
+  ctx.beginPath();
+  ctx.moveTo(30, 20);
+  ctx.lineTo(40-tol, 20);
+  ctx.lineTo(30, 10+tol);
+  ctx.fill();
+
+  ctx.beginPath();
+  ctx.moveTo(10, 20);
+  ctx.lineTo(30, 20);
+  ctx.lineTo(30, 40);
+  ctx.stroke();
+
+
+  ctx.fillStyle = '#0f0';
+  ctx.strokeStyle = '#f00';
+
+  ctx.beginPath();
+  ctx.moveTo(60, 20);
+  ctx.lineTo(80, 20);
+  ctx.lineTo(80, 40);
+  ctx.stroke();
+
+  ctx.fillRect(60, 10, 20, 20);
+  ctx.fillRect(70, 20, 20, 20);
+  ctx.beginPath();
+  ctx.moveTo(80, 20);
+  ctx.lineTo(90+tol, 20);
+  ctx.lineTo(80, 10-tol);
+  ctx.fill();
+
+  _assertPixel(canvas, 34,16, 0,255,0,255);
+  _assertPixel(canvas, 34,15, 0,255,0,255);
+  _assertPixel(canvas, 35,15, 0,255,0,255);
+  _assertPixel(canvas, 36,15, 0,255,0,255);
+  _assertPixel(canvas, 36,14, 0,255,0,255);
+
+  _assertPixel(canvas, 84,16, 0,255,0,255);
+  _assertPixel(canvas, 84,15, 0,255,0,255);
+  _assertPixel(canvas, 85,15, 0,255,0,255);
+  _assertPixel(canvas, 86,15, 0,255,0,255);
+  _assertPixel(canvas, 86,14, 0,255,0,255);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/line-styles/2d.line.join.closed.html b/testing/web-platform/tests/html/canvas/offscreen/line-styles/2d.line.join.closed.html
new file mode 100644
index 0000000000..60650adeb3
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/line-styles/2d.line.join.closed.html
@@ -0,0 +1,45 @@
+
+
+OffscreenCanvas test: 2d.line.join.closed
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.line.join.closed
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Line joins are drawn at the corner of a closed rectangle
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/line-styles/2d.line.join.closed.worker.js b/testing/web-platform/tests/html/canvas/offscreen/line-styles/2d.line.join.closed.worker.js
new file mode 100644
index 0000000000..4882311961
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/line-styles/2d.line.join.closed.worker.js
@@ -0,0 +1,40 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.line.join.closed
+// Description:Line joins are drawn at the corner of a closed rectangle
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("Line joins are drawn at the corner of a closed rectangle");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#f00';
+  ctx.strokeStyle = '#0f0';
+  ctx.fillRect(0, 0, 100, 50);
+
+  ctx.lineJoin = 'miter';
+  ctx.lineWidth = 200;
+
+  ctx.beginPath();
+  ctx.moveTo(100, 50);
+  ctx.lineTo(100, 1000);
+  ctx.lineTo(1000, 1000);
+  ctx.lineTo(1000, 50);
+  ctx.closePath();
+  ctx.stroke();
+
+  _assertPixel(canvas, 1,1, 0,255,0,255);
+  _assertPixel(canvas, 48,1, 0,255,0,255);
+  _assertPixel(canvas, 48,48, 0,255,0,255);
+  _assertPixel(canvas, 1,48, 0,255,0,255);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/line-styles/2d.line.join.invalid.html b/testing/web-platform/tests/html/canvas/offscreen/line-styles/2d.line.join.invalid.html
new file mode 100644
index 0000000000..be1f7e393e
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/line-styles/2d.line.join.invalid.html
@@ -0,0 +1,52 @@
+
+
+OffscreenCanvas test: 2d.line.join.invalid
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.line.join.invalid
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Setting lineJoin to invalid values is ignored
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/line-styles/2d.line.join.invalid.worker.js b/testing/web-platform/tests/html/canvas/offscreen/line-styles/2d.line.join.invalid.worker.js
new file mode 100644
index 0000000000..aa5a35c0c5
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/line-styles/2d.line.join.invalid.worker.js
@@ -0,0 +1,47 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.line.join.invalid
+// Description:Setting lineJoin to invalid values is ignored
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("Setting lineJoin to invalid values is ignored");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.lineJoin = 'bevel'
+  _assertSame(ctx.lineJoin, 'bevel', "ctx.lineJoin", "'bevel'");
+
+  ctx.lineJoin = 'bevel';
+  ctx.lineJoin = 'invalid';
+  _assertSame(ctx.lineJoin, 'bevel', "ctx.lineJoin", "'bevel'");
+
+  ctx.lineJoin = 'bevel';
+  ctx.lineJoin = 'ROUND';
+  _assertSame(ctx.lineJoin, 'bevel', "ctx.lineJoin", "'bevel'");
+
+  ctx.lineJoin = 'bevel';
+  ctx.lineJoin = 'round\0';
+  _assertSame(ctx.lineJoin, 'bevel', "ctx.lineJoin", "'bevel'");
+
+  ctx.lineJoin = 'bevel';
+  ctx.lineJoin = 'round ';
+  _assertSame(ctx.lineJoin, 'bevel', "ctx.lineJoin", "'bevel'");
+
+  ctx.lineJoin = 'bevel';
+  ctx.lineJoin = "";
+  _assertSame(ctx.lineJoin, 'bevel', "ctx.lineJoin", "'bevel'");
+
+  ctx.lineJoin = 'bevel';
+  ctx.lineJoin = 'butt';
+  _assertSame(ctx.lineJoin, 'bevel', "ctx.lineJoin", "'bevel'");
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/line-styles/2d.line.join.miter.html b/testing/web-platform/tests/html/canvas/offscreen/line-styles/2d.line.join.miter.html
new file mode 100644
index 0000000000..c26e883c40
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/line-styles/2d.line.join.miter.html
@@ -0,0 +1,71 @@
+
+
+OffscreenCanvas test: 2d.line.join.miter
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.line.join.miter
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              lineJoin 'miter' is rendered correctly
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/line-styles/2d.line.join.miter.worker.js b/testing/web-platform/tests/html/canvas/offscreen/line-styles/2d.line.join.miter.worker.js
new file mode 100644
index 0000000000..7b70000100
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/line-styles/2d.line.join.miter.worker.js
@@ -0,0 +1,66 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.line.join.miter
+// Description:lineJoin 'miter' is rendered correctly
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("lineJoin 'miter' is rendered correctly");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#0f0';
+  ctx.fillRect(0, 0, 100, 50);
+
+  ctx.lineJoin = 'miter';
+  ctx.lineWidth = 20;
+
+  ctx.fillStyle = '#f00';
+  ctx.strokeStyle = '#0f0';
+
+  ctx.fillStyle = '#f00';
+  ctx.strokeStyle = '#0f0';
+
+  ctx.fillRect(10, 10, 30, 20);
+  ctx.fillRect(20, 10, 20, 30);
+
+  ctx.beginPath();
+  ctx.moveTo(10, 20);
+  ctx.lineTo(30, 20);
+  ctx.lineTo(30, 40);
+  ctx.stroke();
+
+
+  ctx.fillStyle = '#0f0';
+  ctx.strokeStyle = '#f00';
+
+  ctx.beginPath();
+  ctx.moveTo(60, 20);
+  ctx.lineTo(80, 20);
+  ctx.lineTo(80, 40);
+  ctx.stroke();
+
+  ctx.fillRect(60, 10, 30, 20);
+  ctx.fillRect(70, 10, 20, 30);
+
+  _assertPixel(canvas, 38,12, 0,255,0,255);
+  _assertPixel(canvas, 39,11, 0,255,0,255);
+  _assertPixel(canvas, 40,10, 0,255,0,255);
+  _assertPixel(canvas, 41,9, 0,255,0,255);
+  _assertPixel(canvas, 42,8, 0,255,0,255);
+
+  _assertPixel(canvas, 88,12, 0,255,0,255);
+  _assertPixel(canvas, 89,11, 0,255,0,255);
+  _assertPixel(canvas, 90,10, 0,255,0,255);
+  _assertPixel(canvas, 91,9, 0,255,0,255);
+  _assertPixel(canvas, 92,8, 0,255,0,255);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/line-styles/2d.line.join.open.html b/testing/web-platform/tests/html/canvas/offscreen/line-styles/2d.line.join.open.html
new file mode 100644
index 0000000000..d801e5c367
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/line-styles/2d.line.join.open.html
@@ -0,0 +1,45 @@
+
+
+OffscreenCanvas test: 2d.line.join.open
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.line.join.open
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Line joins are not drawn at the corner of an unclosed rectangle
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/line-styles/2d.line.join.open.worker.js b/testing/web-platform/tests/html/canvas/offscreen/line-styles/2d.line.join.open.worker.js
new file mode 100644
index 0000000000..2a1242436d
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/line-styles/2d.line.join.open.worker.js
@@ -0,0 +1,40 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.line.join.open
+// Description:Line joins are not drawn at the corner of an unclosed rectangle
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("Line joins are not drawn at the corner of an unclosed rectangle");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#0f0';
+  ctx.strokeStyle = '#f00';
+  ctx.fillRect(0, 0, 100, 50);
+
+  ctx.lineJoin = 'miter';
+  ctx.lineWidth = 200;
+
+  ctx.beginPath();
+  ctx.moveTo(100, 50);
+  ctx.lineTo(100, 1000);
+  ctx.lineTo(1000, 1000);
+  ctx.lineTo(1000, 50);
+  ctx.lineTo(100, 50);
+  ctx.stroke();
+
+  _assertPixel(canvas, 1,1, 0,255,0,255);
+  _assertPixel(canvas, 48,1, 0,255,0,255);
+  _assertPixel(canvas, 48,48, 0,255,0,255);
+  _assertPixel(canvas, 1,48, 0,255,0,255);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/line-styles/2d.line.join.parallel.html b/testing/web-platform/tests/html/canvas/offscreen/line-styles/2d.line.join.parallel.html
new file mode 100644
index 0000000000..0826406b9d
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/line-styles/2d.line.join.parallel.html
@@ -0,0 +1,42 @@
+
+
+OffscreenCanvas test: 2d.line.join.parallel
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.line.join.parallel
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Line joins are drawn at 180-degree joins
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/line-styles/2d.line.join.parallel.worker.js b/testing/web-platform/tests/html/canvas/offscreen/line-styles/2d.line.join.parallel.worker.js
new file mode 100644
index 0000000000..f5b67dc5a2
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/line-styles/2d.line.join.parallel.worker.js
@@ -0,0 +1,37 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.line.join.parallel
+// Description:Line joins are drawn at 180-degree joins
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("Line joins are drawn at 180-degree joins");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#f00';
+  ctx.fillRect(0, 0, 100, 50);
+
+  ctx.strokeStyle = '#0f0';
+  ctx.lineWidth = 300;
+  ctx.lineJoin = 'round';
+  ctx.beginPath();
+  ctx.moveTo(-100, 25);
+  ctx.lineTo(0, 25);
+  ctx.lineTo(-100, 25);
+  ctx.stroke();
+
+  _assertPixel(canvas, 1,1, 0,255,0,255);
+  _assertPixel(canvas, 48,1, 0,255,0,255);
+  _assertPixel(canvas, 48,48, 0,255,0,255);
+  _assertPixel(canvas, 1,48, 0,255,0,255);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/line-styles/2d.line.join.round.html b/testing/web-platform/tests/html/canvas/offscreen/line-styles/2d.line.join.round.html
new file mode 100644
index 0000000000..70f6a8e517
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/line-styles/2d.line.join.round.html
@@ -0,0 +1,78 @@
+
+
+OffscreenCanvas test: 2d.line.join.round
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.line.join.round
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              lineJoin 'round' is rendered correctly
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/line-styles/2d.line.join.round.worker.js b/testing/web-platform/tests/html/canvas/offscreen/line-styles/2d.line.join.round.worker.js
new file mode 100644
index 0000000000..33b135d604
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/line-styles/2d.line.join.round.worker.js
@@ -0,0 +1,73 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.line.join.round
+// Description:lineJoin 'round' is rendered correctly
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("lineJoin 'round' is rendered correctly");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#0f0';
+  ctx.fillRect(0, 0, 100, 50);
+
+  var tol = 1; // tolerance to avoid antialiasing artifacts
+
+  ctx.lineJoin = 'round';
+  ctx.lineWidth = 20;
+
+  ctx.fillStyle = '#f00';
+  ctx.strokeStyle = '#0f0';
+
+  ctx.fillRect(10, 10, 20, 20);
+  ctx.fillRect(20, 20, 20, 20);
+  ctx.beginPath();
+  ctx.moveTo(30, 20);
+  ctx.arc(30, 20, 10-tol, 0, 2*Math.PI, true);
+  ctx.fill();
+
+  ctx.beginPath();
+  ctx.moveTo(10, 20);
+  ctx.lineTo(30, 20);
+  ctx.lineTo(30, 40);
+  ctx.stroke();
+
+
+  ctx.fillStyle = '#0f0';
+  ctx.strokeStyle = '#f00';
+
+  ctx.beginPath();
+  ctx.moveTo(60, 20);
+  ctx.lineTo(80, 20);
+  ctx.lineTo(80, 40);
+  ctx.stroke();
+
+  ctx.fillRect(60, 10, 20, 20);
+  ctx.fillRect(70, 20, 20, 20);
+  ctx.beginPath();
+  ctx.moveTo(80, 20);
+  ctx.arc(80, 20, 10+tol, 0, 2*Math.PI, true);
+  ctx.fill();
+
+  _assertPixel(canvas, 36,14, 0,255,0,255);
+  _assertPixel(canvas, 36,13, 0,255,0,255);
+  _assertPixel(canvas, 37,13, 0,255,0,255);
+  _assertPixel(canvas, 38,13, 0,255,0,255);
+  _assertPixel(canvas, 38,12, 0,255,0,255);
+
+  _assertPixel(canvas, 86,14, 0,255,0,255);
+  _assertPixel(canvas, 86,13, 0,255,0,255);
+  _assertPixel(canvas, 87,13, 0,255,0,255);
+  _assertPixel(canvas, 88,13, 0,255,0,255);
+  _assertPixel(canvas, 88,12, 0,255,0,255);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/line-styles/2d.line.join.valid.html b/testing/web-platform/tests/html/canvas/offscreen/line-styles/2d.line.join.valid.html
new file mode 100644
index 0000000000..3b3935d1f7
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/line-styles/2d.line.join.valid.html
@@ -0,0 +1,34 @@
+
+
+OffscreenCanvas test: 2d.line.join.valid
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.line.join.valid
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Setting lineJoin to valid values works
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/line-styles/2d.line.join.valid.worker.js b/testing/web-platform/tests/html/canvas/offscreen/line-styles/2d.line.join.valid.worker.js
new file mode 100644
index 0000000000..d1bdfd8845
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/line-styles/2d.line.join.valid.worker.js
@@ -0,0 +1,29 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.line.join.valid
+// Description:Setting lineJoin to valid values works
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("Setting lineJoin to valid values works");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.lineJoin = 'bevel'
+  _assertSame(ctx.lineJoin, 'bevel', "ctx.lineJoin", "'bevel'");
+
+  ctx.lineJoin = 'round';
+  _assertSame(ctx.lineJoin, 'round', "ctx.lineJoin", "'round'");
+
+  ctx.lineJoin = 'miter';
+  _assertSame(ctx.lineJoin, 'miter', "ctx.lineJoin", "'miter'");
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/line-styles/2d.line.miter.acute.html b/testing/web-platform/tests/html/canvas/offscreen/line-styles/2d.line.miter.acute.html
new file mode 100644
index 0000000000..587062ed12
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/line-styles/2d.line.miter.acute.html
@@ -0,0 +1,52 @@
+
+
+OffscreenCanvas test: 2d.line.miter.acute
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.line.miter.acute
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Miter joins are drawn correctly with acute angles
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/line-styles/2d.line.miter.acute.worker.js b/testing/web-platform/tests/html/canvas/offscreen/line-styles/2d.line.miter.acute.worker.js
new file mode 100644
index 0000000000..0ab5c9050c
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/line-styles/2d.line.miter.acute.worker.js
@@ -0,0 +1,47 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.line.miter.acute
+// Description:Miter joins are drawn correctly with acute angles
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("Miter joins are drawn correctly with acute angles");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#f00';
+  ctx.fillRect(0, 0, 100, 50);
+
+  ctx.lineWidth = 200;
+  ctx.lineJoin = 'miter';
+
+  ctx.strokeStyle = '#0f0';
+  ctx.miterLimit = 2.614;
+  ctx.beginPath();
+  ctx.moveTo(100, 1000);
+  ctx.lineTo(100, 100);
+  ctx.lineTo(1000, 1000);
+  ctx.stroke();
+
+  ctx.strokeStyle = '#f00';
+  ctx.miterLimit = 2.613;
+  ctx.beginPath();
+  ctx.moveTo(100, 1000);
+  ctx.lineTo(100, 100);
+  ctx.lineTo(1000, 1000);
+  ctx.stroke();
+
+  _assertPixel(canvas, 1,1, 0,255,0,255);
+  _assertPixel(canvas, 48,1, 0,255,0,255);
+  _assertPixel(canvas, 48,48, 0,255,0,255);
+  _assertPixel(canvas, 1,48, 0,255,0,255);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/line-styles/2d.line.miter.exceeded.html b/testing/web-platform/tests/html/canvas/offscreen/line-styles/2d.line.miter.exceeded.html
new file mode 100644
index 0000000000..1ae5c55aef
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/line-styles/2d.line.miter.exceeded.html
@@ -0,0 +1,44 @@
+
+
+OffscreenCanvas test: 2d.line.miter.exceeded
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.line.miter.exceeded
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Miter joins are not drawn when the miter limit is exceeded
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/line-styles/2d.line.miter.exceeded.worker.js b/testing/web-platform/tests/html/canvas/offscreen/line-styles/2d.line.miter.exceeded.worker.js
new file mode 100644
index 0000000000..41c4716c88
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/line-styles/2d.line.miter.exceeded.worker.js
@@ -0,0 +1,39 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.line.miter.exceeded
+// Description:Miter joins are not drawn when the miter limit is exceeded
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("Miter joins are not drawn when the miter limit is exceeded");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#0f0';
+  ctx.fillRect(0, 0, 100, 50);
+
+  ctx.lineWidth = 400;
+  ctx.lineJoin = 'miter';
+
+  ctx.strokeStyle = '#f00';
+  ctx.miterLimit = 1.414;
+  ctx.beginPath();
+  ctx.moveTo(200, 1000);
+  ctx.lineTo(200, 200);
+  ctx.lineTo(1000, 201); // slightly non-right-angle to avoid being a special case
+  ctx.stroke();
+
+  _assertPixel(canvas, 1,1, 0,255,0,255);
+  _assertPixel(canvas, 48,1, 0,255,0,255);
+  _assertPixel(canvas, 48,48, 0,255,0,255);
+  _assertPixel(canvas, 1,48, 0,255,0,255);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/line-styles/2d.line.miter.invalid.html b/testing/web-platform/tests/html/canvas/offscreen/line-styles/2d.line.miter.invalid.html
new file mode 100644
index 0000000000..eacd95b811
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/line-styles/2d.line.miter.invalid.html
@@ -0,0 +1,60 @@
+
+
+OffscreenCanvas test: 2d.line.miter.invalid
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.line.miter.invalid
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Setting miterLimit to invalid values is ignored
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/line-styles/2d.line.miter.invalid.worker.js b/testing/web-platform/tests/html/canvas/offscreen/line-styles/2d.line.miter.invalid.worker.js
new file mode 100644
index 0000000000..62f250670c
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/line-styles/2d.line.miter.invalid.worker.js
@@ -0,0 +1,55 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.line.miter.invalid
+// Description:Setting miterLimit to invalid values is ignored
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("Setting miterLimit to invalid values is ignored");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.miterLimit = 1.5;
+  _assertSame(ctx.miterLimit, 1.5, "ctx.miterLimit", "1.5");
+
+  ctx.miterLimit = 1.5;
+  ctx.miterLimit = 0;
+  _assertSame(ctx.miterLimit, 1.5, "ctx.miterLimit", "1.5");
+
+  ctx.miterLimit = 1.5;
+  ctx.miterLimit = -1;
+  _assertSame(ctx.miterLimit, 1.5, "ctx.miterLimit", "1.5");
+
+  ctx.miterLimit = 1.5;
+  ctx.miterLimit = Infinity;
+  _assertSame(ctx.miterLimit, 1.5, "ctx.miterLimit", "1.5");
+
+  ctx.miterLimit = 1.5;
+  ctx.miterLimit = -Infinity;
+  _assertSame(ctx.miterLimit, 1.5, "ctx.miterLimit", "1.5");
+
+  ctx.miterLimit = 1.5;
+  ctx.miterLimit = NaN;
+  _assertSame(ctx.miterLimit, 1.5, "ctx.miterLimit", "1.5");
+
+  ctx.miterLimit = 1.5;
+  ctx.miterLimit = 'string';
+  _assertSame(ctx.miterLimit, 1.5, "ctx.miterLimit", "1.5");
+
+  ctx.miterLimit = 1.5;
+  ctx.miterLimit = true;
+  _assertSame(ctx.miterLimit, 1, "ctx.miterLimit", "1");
+
+  ctx.miterLimit = 1.5;
+  ctx.miterLimit = false;
+  _assertSame(ctx.miterLimit, 1.5, "ctx.miterLimit", "1.5");
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/line-styles/2d.line.miter.lineedge.html b/testing/web-platform/tests/html/canvas/offscreen/line-styles/2d.line.miter.lineedge.html
new file mode 100644
index 0000000000..bad3cedc0e
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/line-styles/2d.line.miter.lineedge.html
@@ -0,0 +1,41 @@
+
+
+OffscreenCanvas test: 2d.line.miter.lineedge
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.line.miter.lineedge
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Miter joins are not drawn when the miter limit is exceeded at the corners of a zero-height rectangle
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/line-styles/2d.line.miter.lineedge.worker.js b/testing/web-platform/tests/html/canvas/offscreen/line-styles/2d.line.miter.lineedge.worker.js
new file mode 100644
index 0000000000..2b61bc8975
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/line-styles/2d.line.miter.lineedge.worker.js
@@ -0,0 +1,36 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.line.miter.lineedge
+// Description:Miter joins are not drawn when the miter limit is exceeded at the corners of a zero-height rectangle
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("Miter joins are not drawn when the miter limit is exceeded at the corners of a zero-height rectangle");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#0f0';
+  ctx.fillRect(0, 0, 100, 50);
+
+  ctx.lineWidth = 200;
+  ctx.lineJoin = 'miter';
+
+  ctx.strokeStyle = '#f00';
+  ctx.miterLimit = 1.414;
+  ctx.beginPath();
+  ctx.strokeRect(100, 25, 200, 0);
+
+  _assertPixel(canvas, 1,1, 0,255,0,255);
+  _assertPixel(canvas, 48,1, 0,255,0,255);
+  _assertPixel(canvas, 48,48, 0,255,0,255);
+  _assertPixel(canvas, 1,48, 0,255,0,255);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/line-styles/2d.line.miter.obtuse.html b/testing/web-platform/tests/html/canvas/offscreen/line-styles/2d.line.miter.obtuse.html
new file mode 100644
index 0000000000..efab533fba
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/line-styles/2d.line.miter.obtuse.html
@@ -0,0 +1,52 @@
+
+
+OffscreenCanvas test: 2d.line.miter.obtuse
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.line.miter.obtuse
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Miter joins are drawn correctly with obtuse angles
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/line-styles/2d.line.miter.obtuse.worker.js b/testing/web-platform/tests/html/canvas/offscreen/line-styles/2d.line.miter.obtuse.worker.js
new file mode 100644
index 0000000000..42b1cd37b1
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/line-styles/2d.line.miter.obtuse.worker.js
@@ -0,0 +1,47 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.line.miter.obtuse
+// Description:Miter joins are drawn correctly with obtuse angles
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("Miter joins are drawn correctly with obtuse angles");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#f00';
+  ctx.fillRect(0, 0, 100, 50);
+
+  ctx.lineWidth = 1600;
+  ctx.lineJoin = 'miter';
+
+  ctx.strokeStyle = '#0f0';
+  ctx.miterLimit = 1.083;
+  ctx.beginPath();
+  ctx.moveTo(800, 10000);
+  ctx.lineTo(800, 300);
+  ctx.lineTo(10000, -8900);
+  ctx.stroke();
+
+  ctx.strokeStyle = '#f00';
+  ctx.miterLimit = 1.082;
+  ctx.beginPath();
+  ctx.moveTo(800, 10000);
+  ctx.lineTo(800, 300);
+  ctx.lineTo(10000, -8900);
+  ctx.stroke();
+
+  _assertPixel(canvas, 1,1, 0,255,0,255);
+  _assertPixel(canvas, 48,1, 0,255,0,255);
+  _assertPixel(canvas, 48,48, 0,255,0,255);
+  _assertPixel(canvas, 1,48, 0,255,0,255);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/line-styles/2d.line.miter.rightangle.html b/testing/web-platform/tests/html/canvas/offscreen/line-styles/2d.line.miter.rightangle.html
new file mode 100644
index 0000000000..5bb4e63230
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/line-styles/2d.line.miter.rightangle.html
@@ -0,0 +1,44 @@
+
+
+OffscreenCanvas test: 2d.line.miter.rightangle
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.line.miter.rightangle
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Miter joins are not drawn when the miter limit is exceeded, on exact right angles
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/line-styles/2d.line.miter.rightangle.worker.js b/testing/web-platform/tests/html/canvas/offscreen/line-styles/2d.line.miter.rightangle.worker.js
new file mode 100644
index 0000000000..42e995deed
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/line-styles/2d.line.miter.rightangle.worker.js
@@ -0,0 +1,39 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.line.miter.rightangle
+// Description:Miter joins are not drawn when the miter limit is exceeded, on exact right angles
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("Miter joins are not drawn when the miter limit is exceeded, on exact right angles");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#0f0';
+  ctx.fillRect(0, 0, 100, 50);
+
+  ctx.lineWidth = 400;
+  ctx.lineJoin = 'miter';
+
+  ctx.strokeStyle = '#f00';
+  ctx.miterLimit = 1.414;
+  ctx.beginPath();
+  ctx.moveTo(200, 1000);
+  ctx.lineTo(200, 200);
+  ctx.lineTo(1000, 200);
+  ctx.stroke();
+
+  _assertPixel(canvas, 1,1, 0,255,0,255);
+  _assertPixel(canvas, 48,1, 0,255,0,255);
+  _assertPixel(canvas, 48,48, 0,255,0,255);
+  _assertPixel(canvas, 1,48, 0,255,0,255);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/line-styles/2d.line.miter.valid.html b/testing/web-platform/tests/html/canvas/offscreen/line-styles/2d.line.miter.valid.html
new file mode 100644
index 0000000000..3c569ea655
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/line-styles/2d.line.miter.valid.html
@@ -0,0 +1,37 @@
+
+
+OffscreenCanvas test: 2d.line.miter.valid
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.line.miter.valid
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Setting miterLimit to valid values works
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/line-styles/2d.line.miter.valid.worker.js b/testing/web-platform/tests/html/canvas/offscreen/line-styles/2d.line.miter.valid.worker.js
new file mode 100644
index 0000000000..cb0548abd0
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/line-styles/2d.line.miter.valid.worker.js
@@ -0,0 +1,32 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.line.miter.valid
+// Description:Setting miterLimit to valid values works
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("Setting miterLimit to valid values works");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.miterLimit = 1.5;
+  _assertSame(ctx.miterLimit, 1.5, "ctx.miterLimit", "1.5");
+
+  ctx.miterLimit = "1e1";
+  _assertSame(ctx.miterLimit, 10, "ctx.miterLimit", "10");
+
+  ctx.miterLimit = 1/1024;
+  _assertSame(ctx.miterLimit, 1/1024, "ctx.miterLimit", "1/1024");
+
+  ctx.miterLimit = 1000;
+  _assertSame(ctx.miterLimit, 1000, "ctx.miterLimit", "1000");
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/line-styles/2d.line.miter.within.html b/testing/web-platform/tests/html/canvas/offscreen/line-styles/2d.line.miter.within.html
new file mode 100644
index 0000000000..da87cf4a29
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/line-styles/2d.line.miter.within.html
@@ -0,0 +1,44 @@
+
+
+OffscreenCanvas test: 2d.line.miter.within
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.line.miter.within
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Miter joins are drawn when the miter limit is not quite exceeded
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/line-styles/2d.line.miter.within.worker.js b/testing/web-platform/tests/html/canvas/offscreen/line-styles/2d.line.miter.within.worker.js
new file mode 100644
index 0000000000..1d9aacb817
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/line-styles/2d.line.miter.within.worker.js
@@ -0,0 +1,39 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.line.miter.within
+// Description:Miter joins are drawn when the miter limit is not quite exceeded
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("Miter joins are drawn when the miter limit is not quite exceeded");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#f00';
+  ctx.fillRect(0, 0, 100, 50);
+
+  ctx.lineWidth = 400;
+  ctx.lineJoin = 'miter';
+
+  ctx.strokeStyle = '#0f0';
+  ctx.miterLimit = 1.416;
+  ctx.beginPath();
+  ctx.moveTo(200, 1000);
+  ctx.lineTo(200, 200);
+  ctx.lineTo(1000, 201);
+  ctx.stroke();
+
+  _assertPixel(canvas, 1,1, 0,255,0,255);
+  _assertPixel(canvas, 48,1, 0,255,0,255);
+  _assertPixel(canvas, 48,48, 0,255,0,255);
+  _assertPixel(canvas, 1,48, 0,255,0,255);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/line-styles/2d.line.union.html b/testing/web-platform/tests/html/canvas/offscreen/line-styles/2d.line.union.html
new file mode 100644
index 0000000000..d3d13ece09
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/line-styles/2d.line.union.html
@@ -0,0 +1,46 @@
+
+
+OffscreenCanvas test: 2d.line.union
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.line.union
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/line-styles/2d.line.union.worker.js b/testing/web-platform/tests/html/canvas/offscreen/line-styles/2d.line.union.worker.js
new file mode 100644
index 0000000000..f2c7b2c4ce
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/line-styles/2d.line.union.worker.js
@@ -0,0 +1,41 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.line.union
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#f00';
+  ctx.fillRect(0, 0, 100, 50);
+
+  ctx.lineWidth = 100;
+  ctx.lineCap = 'round';
+
+  ctx.strokeStyle = '#0f0';
+  ctx.beginPath();
+  ctx.moveTo(0, 24);
+  ctx.lineTo(100, 25);
+  ctx.lineTo(0, 26);
+  ctx.closePath();
+  ctx.stroke();
+
+  _assertPixel(canvas, 1,1, 0,255,0,255);
+  _assertPixel(canvas, 25,1, 0,255,0,255);
+  _assertPixel(canvas, 48,1, 0,255,0,255);
+  _assertPixel(canvas, 1,48, 0,255,0,255);
+  _assertPixel(canvas, 25,1, 0,255,0,255);
+  _assertPixel(canvas, 48,48, 0,255,0,255);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/line-styles/2d.line.width.basic.html b/testing/web-platform/tests/html/canvas/offscreen/line-styles/2d.line.width.basic.html
new file mode 100644
index 0000000000..88e38294bf
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/line-styles/2d.line.width.basic.html
@@ -0,0 +1,63 @@
+
+
+OffscreenCanvas test: 2d.line.width.basic
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.line.width.basic
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              lineWidth determines the width of line strokes
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/line-styles/2d.line.width.basic.worker.js b/testing/web-platform/tests/html/canvas/offscreen/line-styles/2d.line.width.basic.worker.js
new file mode 100644
index 0000000000..012d9b11bd
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/line-styles/2d.line.width.basic.worker.js
@@ -0,0 +1,58 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.line.width.basic
+// Description:lineWidth determines the width of line strokes
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("lineWidth determines the width of line strokes");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#0f0';
+  ctx.fillRect(0, 0, 100, 50);
+
+  ctx.lineWidth = 20;
+  // Draw a green line over a red box, to check the line is not too small
+  ctx.fillStyle = '#f00';
+  ctx.strokeStyle = '#0f0';
+  ctx.fillRect(15, 15, 20, 20);
+  ctx.beginPath();
+  ctx.moveTo(25, 15);
+  ctx.lineTo(25, 35);
+  ctx.stroke();
+
+  // Draw a green box over a red line, to check the line is not too large
+  ctx.fillStyle = '#0f0';
+  ctx.strokeStyle = '#f00';
+  ctx.beginPath();
+  ctx.moveTo(75, 15);
+  ctx.lineTo(75, 35);
+  ctx.stroke();
+  ctx.fillRect(65, 15, 20, 20);
+
+  _assertPixel(canvas, 14,25, 0,255,0,255);
+  _assertPixel(canvas, 15,25, 0,255,0,255);
+  _assertPixel(canvas, 16,25, 0,255,0,255);
+  _assertPixel(canvas, 25,25, 0,255,0,255);
+  _assertPixel(canvas, 34,25, 0,255,0,255);
+  _assertPixel(canvas, 35,25, 0,255,0,255);
+  _assertPixel(canvas, 36,25, 0,255,0,255);
+
+  _assertPixel(canvas, 64,25, 0,255,0,255);
+  _assertPixel(canvas, 65,25, 0,255,0,255);
+  _assertPixel(canvas, 66,25, 0,255,0,255);
+  _assertPixel(canvas, 75,25, 0,255,0,255);
+  _assertPixel(canvas, 84,25, 0,255,0,255);
+  _assertPixel(canvas, 85,25, 0,255,0,255);
+  _assertPixel(canvas, 86,25, 0,255,0,255);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/line-styles/2d.line.width.invalid.html b/testing/web-platform/tests/html/canvas/offscreen/line-styles/2d.line.width.invalid.html
new file mode 100644
index 0000000000..481a316822
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/line-styles/2d.line.width.invalid.html
@@ -0,0 +1,60 @@
+
+
+OffscreenCanvas test: 2d.line.width.invalid
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.line.width.invalid
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Setting lineWidth to invalid values is ignored
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/line-styles/2d.line.width.invalid.worker.js b/testing/web-platform/tests/html/canvas/offscreen/line-styles/2d.line.width.invalid.worker.js
new file mode 100644
index 0000000000..3a10cb48e8
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/line-styles/2d.line.width.invalid.worker.js
@@ -0,0 +1,55 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.line.width.invalid
+// Description:Setting lineWidth to invalid values is ignored
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("Setting lineWidth to invalid values is ignored");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.lineWidth = 1.5;
+  _assertSame(ctx.lineWidth, 1.5, "ctx.lineWidth", "1.5");
+
+  ctx.lineWidth = 1.5;
+  ctx.lineWidth = 0;
+  _assertSame(ctx.lineWidth, 1.5, "ctx.lineWidth", "1.5");
+
+  ctx.lineWidth = 1.5;
+  ctx.lineWidth = -1;
+  _assertSame(ctx.lineWidth, 1.5, "ctx.lineWidth", "1.5");
+
+  ctx.lineWidth = 1.5;
+  ctx.lineWidth = Infinity;
+  _assertSame(ctx.lineWidth, 1.5, "ctx.lineWidth", "1.5");
+
+  ctx.lineWidth = 1.5;
+  ctx.lineWidth = -Infinity;
+  _assertSame(ctx.lineWidth, 1.5, "ctx.lineWidth", "1.5");
+
+  ctx.lineWidth = 1.5;
+  ctx.lineWidth = NaN;
+  _assertSame(ctx.lineWidth, 1.5, "ctx.lineWidth", "1.5");
+
+  ctx.lineWidth = 1.5;
+  ctx.lineWidth = 'string';
+  _assertSame(ctx.lineWidth, 1.5, "ctx.lineWidth", "1.5");
+
+  ctx.lineWidth = 1.5;
+  ctx.lineWidth = true;
+  _assertSame(ctx.lineWidth, 1, "ctx.lineWidth", "1");
+
+  ctx.lineWidth = 1.5;
+  ctx.lineWidth = false;
+  _assertSame(ctx.lineWidth, 1.5, "ctx.lineWidth", "1.5");
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/line-styles/2d.line.width.scaledefault.html b/testing/web-platform/tests/html/canvas/offscreen/line-styles/2d.line.width.scaledefault.html
new file mode 100644
index 0000000000..9ac77a9c49
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/line-styles/2d.line.width.scaledefault.html
@@ -0,0 +1,40 @@
+
+
+OffscreenCanvas test: 2d.line.width.scaledefault
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.line.width.scaledefault
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Default lineWidth strokes are affected by scale transformations
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/line-styles/2d.line.width.scaledefault.worker.js b/testing/web-platform/tests/html/canvas/offscreen/line-styles/2d.line.width.scaledefault.worker.js
new file mode 100644
index 0000000000..8d8089476b
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/line-styles/2d.line.width.scaledefault.worker.js
@@ -0,0 +1,35 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.line.width.scaledefault
+// Description:Default lineWidth strokes are affected by scale transformations
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("Default lineWidth strokes are affected by scale transformations");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#f00';
+  ctx.fillRect(0, 0, 100, 50);
+
+  ctx.scale(50, 50);
+  ctx.strokeStyle = '#0f0';
+  ctx.moveTo(0, 0.5);
+  ctx.lineTo(2, 0.5);
+  ctx.stroke();
+
+  _assertPixel(canvas, 25,25, 0,255,0,255);
+  _assertPixel(canvas, 50,25, 0,255,0,255);
+  _assertPixel(canvas, 75,25, 0,255,0,255);
+  _assertPixel(canvas, 50,5, 0,255,0,255);
+  _assertPixel(canvas, 50,45, 0,255,0,255);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/line-styles/2d.line.width.transformed.html b/testing/web-platform/tests/html/canvas/offscreen/line-styles/2d.line.width.transformed.html
new file mode 100644
index 0000000000..ea8f285dc4
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/line-styles/2d.line.width.transformed.html
@@ -0,0 +1,69 @@
+
+
+OffscreenCanvas test: 2d.line.width.transformed
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.line.width.transformed
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Line stroke widths are affected by scale transformations
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/line-styles/2d.line.width.transformed.worker.js b/testing/web-platform/tests/html/canvas/offscreen/line-styles/2d.line.width.transformed.worker.js
new file mode 100644
index 0000000000..67fc0a29bd
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/line-styles/2d.line.width.transformed.worker.js
@@ -0,0 +1,64 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.line.width.transformed
+// Description:Line stroke widths are affected by scale transformations
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("Line stroke widths are affected by scale transformations");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#0f0';
+  ctx.fillRect(0, 0, 100, 50);
+
+  ctx.lineWidth = 4;
+  // Draw a green line over a red box, to check the line is not too small
+  ctx.fillStyle = '#f00';
+  ctx.strokeStyle = '#0f0';
+  ctx.fillRect(15, 15, 20, 20);
+  ctx.save();
+   ctx.scale(5, 1);
+   ctx.beginPath();
+   ctx.moveTo(5, 15);
+   ctx.lineTo(5, 35);
+   ctx.stroke();
+  ctx.restore();
+
+  // Draw a green box over a red line, to check the line is not too large
+  ctx.fillStyle = '#0f0';
+  ctx.strokeStyle = '#f00';
+  ctx.save();
+   ctx.scale(-5, 1);
+   ctx.beginPath();
+   ctx.moveTo(-15, 15);
+   ctx.lineTo(-15, 35);
+   ctx.stroke();
+  ctx.restore();
+  ctx.fillRect(65, 15, 20, 20);
+
+  _assertPixel(canvas, 14,25, 0,255,0,255);
+  _assertPixel(canvas, 15,25, 0,255,0,255);
+  _assertPixel(canvas, 16,25, 0,255,0,255);
+  _assertPixel(canvas, 25,25, 0,255,0,255);
+  _assertPixel(canvas, 34,25, 0,255,0,255);
+  _assertPixel(canvas, 35,25, 0,255,0,255);
+  _assertPixel(canvas, 36,25, 0,255,0,255);
+
+  _assertPixel(canvas, 64,25, 0,255,0,255);
+  _assertPixel(canvas, 65,25, 0,255,0,255);
+  _assertPixel(canvas, 66,25, 0,255,0,255);
+  _assertPixel(canvas, 75,25, 0,255,0,255);
+  _assertPixel(canvas, 84,25, 0,255,0,255);
+  _assertPixel(canvas, 85,25, 0,255,0,255);
+  _assertPixel(canvas, 86,25, 0,255,0,255);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/line-styles/2d.line.width.valid.html b/testing/web-platform/tests/html/canvas/offscreen/line-styles/2d.line.width.valid.html
new file mode 100644
index 0000000000..813433da3f
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/line-styles/2d.line.width.valid.html
@@ -0,0 +1,37 @@
+
+
+OffscreenCanvas test: 2d.line.width.valid
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.line.width.valid
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Setting lineWidth to valid values works
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/line-styles/2d.line.width.valid.worker.js b/testing/web-platform/tests/html/canvas/offscreen/line-styles/2d.line.width.valid.worker.js
new file mode 100644
index 0000000000..195575f7de
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/line-styles/2d.line.width.valid.worker.js
@@ -0,0 +1,32 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.line.width.valid
+// Description:Setting lineWidth to valid values works
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("Setting lineWidth to valid values works");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.lineWidth = 1.5;
+  _assertSame(ctx.lineWidth, 1.5, "ctx.lineWidth", "1.5");
+
+  ctx.lineWidth = "1e1";
+  _assertSame(ctx.lineWidth, 10, "ctx.lineWidth", "10");
+
+  ctx.lineWidth = 1/1024;
+  _assertSame(ctx.lineWidth, 1/1024, "ctx.lineWidth", "1/1024");
+
+  ctx.lineWidth = 1000;
+  _assertSame(ctx.lineWidth, 1000, "ctx.lineWidth", "1000");
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/manual/convert-to-blob/offscreencanvas.convert.to.blob.html b/testing/web-platform/tests/html/canvas/offscreen/manual/convert-to-blob/offscreencanvas.convert.to.blob.html
new file mode 100644
index 0000000000..1cc0e5bffd
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/manual/convert-to-blob/offscreencanvas.convert.to.blob.html
@@ -0,0 +1,165 @@
+
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/manual/convert-to-blob/offscreencanvas.convert.to.blob.w.html b/testing/web-platform/tests/html/canvas/offscreen/manual/convert-to-blob/offscreencanvas.convert.to.blob.w.html
new file mode 100644
index 0000000000..5c1fa4cf40
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/manual/convert-to-blob/offscreencanvas.convert.to.blob.w.html
@@ -0,0 +1,337 @@
+
+
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/manual/draw-generic-family/2d.text.draw.generic.family.html b/testing/web-platform/tests/html/canvas/offscreen/manual/draw-generic-family/2d.text.draw.generic.family.html
new file mode 100644
index 0000000000..a5fd7ab066
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/manual/draw-generic-family/2d.text.draw.generic.family.html
@@ -0,0 +1,49 @@
+
+OffscreenCanvas test: 2d.text.draw.generic.family
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/manual/draw-generic-family/2d.text.draw.generic.family.w.html b/testing/web-platform/tests/html/canvas/offscreen/manual/draw-generic-family/2d.text.draw.generic.family.w.html
new file mode 100644
index 0000000000..7a88c032ad
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/manual/draw-generic-family/2d.text.draw.generic.family.w.html
@@ -0,0 +1,52 @@
+
+OffscreenCanvas test: 2d.text.draw.generic.family.w
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/manual/filter/offscreencanvas.filter.html b/testing/web-platform/tests/html/canvas/offscreen/manual/filter/offscreencanvas.filter.html
new file mode 100644
index 0000000000..25691983f1
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/manual/filter/offscreencanvas.filter.html
@@ -0,0 +1,27 @@
+
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/manual/filter/offscreencanvas.filter.js b/testing/web-platform/tests/html/canvas/offscreen/manual/filter/offscreencanvas.filter.js
new file mode 100644
index 0000000000..cb2e245803
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/manual/filter/offscreencanvas.filter.js
@@ -0,0 +1,48 @@
+var getRegularContextForFilter = function(filter, pattern) {
+  var c = document.createElement("canvas");
+  c.width = c.height = 80;
+  var ctx = c.getContext('2d');
+  ctx.filter = filter;
+  ctx.drawImage(pattern, 5, 5);
+  ctx.drawImage(pattern, 25, 25);
+  ctx.drawImage(pattern, 45, 45);
+  return ctx;
+};
+
+var matchImageDataResults = function(offscreenImage, regularImage, filter) {
+  assert_array_equals(offscreenImage, regularImage,
+      "The image data generated by filter " +
+      filter +
+      " should be the same for both OffscreenCanvas and regular canvas");
+};
+
+var createPatternCanvas = function() {
+  var patternCanvas = document.createElement('canvas');
+  patternCanvas.width = 20;
+  patternCanvas.height = 20;
+  var patternCtx = patternCanvas.getContext('2d');
+  patternCtx.fillStyle = '#A00';
+  patternCtx.fillRect(0, 0, 10, 10);
+  patternCtx.fillStyle = '#0A0';
+  patternCtx.fillRect(10, 0, 10, 10);
+  patternCtx.fillStyle = '#00A';
+  patternCtx.fillRect(0, 10, 10, 10);
+  patternCtx.fillStyle = "#AA0";
+  patternCtx.fillRect(10, 10, 10, 10);
+  return patternCanvas;
+};
+
+var filters =    [ "none"          ,
+      "blur(10px)"                 ,
+      "brightness(40%)"            ,
+      "contrast(20%)"              ,
+      "drop-shadow(0 0 5px green)" ,
+      "grayscale(100%)"            ,
+      "invert(100%)"               ,
+      "opacity(50%)"               ,
+      "saturate(20%)"              ,
+      "sepia(100%)"                ,
+      "sepia(1) hue-rotate(200deg)",
+      "url(#url)"                  ];
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/manual/filter/offscreencanvas.filter.w.html b/testing/web-platform/tests/html/canvas/offscreen/manual/filter/offscreencanvas.filter.w.html
new file mode 100644
index 0000000000..d6ed915b53
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/manual/filter/offscreencanvas.filter.w.html
@@ -0,0 +1,54 @@
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/manual/image-smoothing/image.smoothing.html b/testing/web-platform/tests/html/canvas/offscreen/manual/image-smoothing/image.smoothing.html
new file mode 100644
index 0000000000..a78524c51d
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/manual/image-smoothing/image.smoothing.html
@@ -0,0 +1,128 @@
+
+
+OffscreenCanvasRenderingContext2D imageSmoothingEnabled test
+
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/manual/image-smoothing/image.smoothing.worker.js b/testing/web-platform/tests/html/canvas/offscreen/manual/image-smoothing/image.smoothing.worker.js
new file mode 100644
index 0000000000..4c37e84b1f
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/manual/image-smoothing/image.smoothing.worker.js
@@ -0,0 +1,126 @@
+// spec link: https://html.spec.whatwg.org/#the-offscreen-2d-rendering-context
+
+importScripts("/resources/testharness.js");
+
+function createTestImage() {
+  var image = new OffscreenCanvas(100, 50);
+  var imgctx = image.getContext('2d');
+  imgctx.fillStyle = "#F00";
+  imgctx.fillRect(0, 0, 2, 2);
+  imgctx.fillStyle = "#0F0";
+  imgctx.fillRect(0, 0, 1, 1);
+  return image;
+}
+
+test(function() {
+  var offscreenCanvas = new OffscreenCanvas(100, 50);
+  var ctx = offscreenCanvas.getContext('2d');
+  assert_true(ctx.imageSmoothingEnabled);
+}, "When the context is created, imageSmoothingEnabled must be set to true.");
+
+test(function() {
+  var offscreenCanvas = new OffscreenCanvas(100, 50);
+  var ctx = offscreenCanvas.getContext('2d');
+  ctx.imageSmoothingEnabled = false;
+  assert_false(ctx.imageSmoothingEnabled);
+}, "On getting imageSmoothingEnabled, the user agent must return the last value it was set to.");
+
+test(function() {
+  var offscreenCanvas = new OffscreenCanvas(100, 50);
+  var ctx = offscreenCanvas.getContext('2d');
+  var image = createTestImage();
+  ctx.scale(10, 10);
+  ctx.drawImage(image, 0, 0);
+  var pixels = ctx.getImageData(9, 9, 1, 1).data;
+  assert_not_equals(pixels[0], 0);
+  assert_not_equals(pixels[1], 255);
+}, "Test that image smoothing is actually on by default.");
+
+test(function() {
+  var offscreenCanvas = new OffscreenCanvas(100, 50);
+  var ctx = offscreenCanvas.getContext('2d');
+  ctx.imageSmoothingEnabled = true;
+  var image = createTestImage();
+  ctx.scale(10, 10);
+  ctx.drawImage(image, 0, 0);
+  var pixels = ctx.getImageData(9, 9, 1, 1).data;
+  assert_not_equals(pixels[0], 0);
+  assert_not_equals(pixels[1], 255);
+}, "Test that image smoothing works when imageSmoothingEnabled is set to true");
+
+test(function() {
+  var offscreenCanvas = new OffscreenCanvas(100, 50);
+  var ctx = offscreenCanvas.getContext('2d');
+  var image = createTestImage();
+  ctx.imageSmoothingEnabled = false;
+  ctx.scale(10, 10);
+  ctx.drawImage(image, 0, 0);
+  var pixels = ctx.getImageData(9, 9, 1, 1).data;
+  assert_array_equals(pixels, [0, 255, 0, 255]);
+}, "Test that imageSmoothingEnabled = false (nearest-neighbor interpolation) works with drawImage().");
+
+test(function() {
+  var offscreenCanvas = new OffscreenCanvas(100, 50);
+  var ctx = offscreenCanvas.getContext('2d');
+  var image = createTestImage();
+  ctx.imageSmoothingEnabled = false;
+  ctx.scale(10, 10);
+  ctx.fillStyle = ctx.createPattern(image, 'repeat');
+  ctx.fillRect(0, 0, 10, 10);
+  var pixels = ctx.getImageData(9, 9, 1, 1).data;
+  assert_array_equals(pixels, [0, 255, 0, 255]);
+}, "Test that imageSmoothingEnabled = false (nearest-neighbor interpolation) works with fillRect and createPattern().");
+
+test(function() {
+  var offscreenCanvas = new OffscreenCanvas(100, 50);
+  var ctx = offscreenCanvas.getContext('2d');
+  var image = createTestImage();
+  ctx.imageSmoothingEnabled = false;
+  ctx.fillStyle = ctx.createPattern(image, 'repeat');
+  ctx.scale(10, 10);
+  ctx.rect(0, 0, 10, 10);
+  ctx.fill();
+  var pixels = ctx.getImageData(9, 9, 1, 1).data;
+  assert_array_equals(pixels, [0, 255, 0, 255]);
+}, "Test that imageSmoothingEnabled = false (nearest-neighbor interpolation) works with fill() and createPattern().");
+
+test(function() {
+  var offscreenCanvas = new OffscreenCanvas(100, 50);
+  var ctx = offscreenCanvas.getContext('2d');
+  var image = createTestImage();
+  ctx.strokeStyle = ctx.createPattern(image, 'repeat');
+  ctx.lineWidth = 5;
+  ctx.imageSmoothingEnabled = false;
+  ctx.scale(10, 10);
+  ctx.beginPath();
+  ctx.moveTo(0, 0);
+  ctx.lineTo(10, 10);
+  ctx.stroke();
+  var pixels = ctx.getImageData(9, 9, 1, 1).data;
+  assert_array_equals(pixels, [0, 255, 0, 255]);
+}, "Test that imageSmoothingEnabled = false (nearest-neighbor interpolation) works with stroke() and createPattern().");
+
+test(function() {
+  var repaints = 5;
+  var offscreenCanvas = new OffscreenCanvas(100, 50);
+  var ctx = offscreenCanvas.getContext('2d');
+
+  function draw() {
+    ctx.clearRect(0, 0, 10, 10);
+    ctx.setTransform(1, 0, 0, 1, 0, 0);
+    var image = createTestImage();
+    ctx.imageSmoothingEnabled = false;
+    ctx.scale(10, 10);
+    ctx.drawImage(image, 0, 0);
+    var pixels = ctx.getImageData(9, 9, 1, 1).data;
+    assert_array_equals(pixels, [0, 255, 0, 255]);
+  }
+
+  while (repaints > 0) {
+    draw();
+    repaints = repaints - 1;
+  }
+
+}, "Test that imageSmoothingEnabled = false (nearest-neighbor interpolation) still works after repaints.");
+
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/manual/the-offscreen-canvas/offscreencanvas.commit.html b/testing/web-platform/tests/html/canvas/offscreen/manual/the-offscreen-canvas/offscreencanvas.commit.html
new file mode 100644
index 0000000000..4ee68b430f
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/manual/the-offscreen-canvas/offscreencanvas.commit.html
@@ -0,0 +1,42 @@
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/manual/the-offscreen-canvas/offscreencanvas.commit.w.html b/testing/web-platform/tests/html/canvas/offscreen/manual/the-offscreen-canvas/offscreencanvas.commit.w.html
new file mode 100644
index 0000000000..7d1d2c85f9
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/manual/the-offscreen-canvas/offscreencanvas.commit.w.html
@@ -0,0 +1,79 @@
+
+
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/manual/the-offscreen-canvas/offscreencanvas.constructor.html b/testing/web-platform/tests/html/canvas/offscreen/manual/the-offscreen-canvas/offscreencanvas.constructor.html
new file mode 100644
index 0000000000..a2ad1dcc7e
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/manual/the-offscreen-canvas/offscreencanvas.constructor.html
@@ -0,0 +1,51 @@
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/manual/the-offscreen-canvas/offscreencanvas.constructor.worker.js b/testing/web-platform/tests/html/canvas/offscreen/manual/the-offscreen-canvas/offscreencanvas.constructor.worker.js
new file mode 100644
index 0000000000..72cfb728f0
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/manual/the-offscreen-canvas/offscreencanvas.constructor.worker.js
@@ -0,0 +1,45 @@
+// spec link: https://html.spec.whatwg.org/#dom-offscreencanvas
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t1 = async_test("Test that calling OffscreenCanvas's constructor generates correct width and height.");
+t1.step(function() {
+    var offscreenCanvas = new OffscreenCanvas(100, 50);
+    assert_equals(offscreenCanvas.width, 100);
+    assert_equals(offscreenCanvas.height, 50);
+
+    offscreenCanvas.width = 50;
+    offscreenCanvas.height = 100;
+    assert_equals(offscreenCanvas.width, 50);
+    assert_equals(offscreenCanvas.height, 100);
+    t1.done();
+});
+
+var t2 = async_test("Test that OffscreenCanvas constructor handles invalid arguments correctly in a worker");
+t2.step(function() {
+    var offscreenCanvas1 = new OffscreenCanvas(1, 1);
+
+    offscreenCanvas1.width = null;
+    offscreenCanvas1.height = null;
+    assert_equals(offscreenCanvas1.width, 0);
+    assert_equals(offscreenCanvas1.height, 0);
+
+    assert_throws_js(TypeError, function() { new OffscreenCanvas(-1, -1); });
+
+    var offscreenCanvas2 = new OffscreenCanvas(null, null);
+    assert_equals(offscreenCanvas2.width, 0);
+    assert_equals(offscreenCanvas2.height, 0);
+
+    assert_throws_js(TypeError, function() { offscreenCanvas2.width = -1; });
+    assert_throws_js(TypeError, function() { offscreenCanvas2.height = -1; });
+
+    var obj = {Name: "John Doe", Age: 30};
+    assert_throws_js(TypeError, function() { offscreenCanvas2.width = obj; });
+    assert_throws_js(TypeError, function() { offscreenCanvas2.height = obj; });
+    assert_throws_js(TypeError, function() { new OffscreenCanvas(obj, obj); });
+    t2.done();
+});
+
+done();
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/manual/the-offscreen-canvas/offscreencanvas.getcontext.html b/testing/web-platform/tests/html/canvas/offscreen/manual/the-offscreen-canvas/offscreencanvas.getcontext.html
new file mode 100644
index 0000000000..51c167ddca
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/manual/the-offscreen-canvas/offscreencanvas.getcontext.html
@@ -0,0 +1,80 @@
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/manual/the-offscreen-canvas/offscreencanvas.getcontext.worker.js b/testing/web-platform/tests/html/canvas/offscreen/manual/the-offscreen-canvas/offscreencanvas.getcontext.worker.js
new file mode 100644
index 0000000000..c413791f61
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/manual/the-offscreen-canvas/offscreencanvas.getcontext.worker.js
@@ -0,0 +1,77 @@
+// spec link: https://html.spec.whatwg.org/#dom-offscreencanvas-getcontext
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+test(function() {
+    var offscreenCanvas = new OffscreenCanvas(1, 1);
+    assert_throws_js(TypeError, function() { offscreenCanvas.getContext('3d'); });
+}, "Test that getContext with un-supported string throws a TypeError.");
+
+test(function() {
+    var offscreenCanvas1 = new OffscreenCanvas(1, 1);
+    var ctx1 = offscreenCanvas1.getContext('2d');
+    assert_true(ctx1 instanceof OffscreenCanvasRenderingContext2D);
+
+    var offscreenCanvas2 = new OffscreenCanvas(1, 1);
+    var ctx2 = offscreenCanvas2.getContext('webgl');
+    assert_true(ctx2 instanceof WebGLRenderingContext);
+
+    var offscreenCanvas3 = new OffscreenCanvas(1, 1);
+    var ctx3 = offscreenCanvas3.getContext('webgl2');
+    assert_true(ctx3 instanceof WebGL2RenderingContext);
+}, "Test that getContext with supported string returns correct results");
+
+test(function() {
+    var offscreenCanvas1 = new OffscreenCanvas(1, 1);
+    var ctx1 = offscreenCanvas1.getContext('2d');
+    var ctx2 = offscreenCanvas1.getContext('webgl');
+    assert_equals(ctx2, null);
+
+    var offscreenCanvas2 = new OffscreenCanvas(1, 1);
+    var ctx3 = offscreenCanvas2.getContext('webgl');
+    var ctx4 = offscreenCanvas2.getContext('2d');
+    assert_equals(ctx4, null);
+}, "Test that getContext twice with different context type returns null the second time");
+
+test(function() {
+    var offscreenCanvas = new OffscreenCanvas(1, 2);
+    var ctx = offscreenCanvas.getContext('2d');
+    var dstCanvas = ctx.canvas;
+    assert_equals(dstCanvas.width, 1);
+    assert_equals(dstCanvas.height, 2);
+}, "Test that 2dcontext.canvas should return the original OffscreenCanvas");
+
+test(function() {
+    var offscreenCanvas = new OffscreenCanvas(1, 2);
+    var ctx = offscreenCanvas.getContext('webgl');
+    var dstCanvas = ctx.canvas;
+    assert_equals(dstCanvas.width, 1);
+    assert_equals(dstCanvas.height, 2);
+}, "Test that webglcontext.canvas should return the original OffscreenCanvas");
+
+test(function() {
+    var offscreenCanvas = new OffscreenCanvas(10, 10);
+    var ctx = offscreenCanvas.getContext('2d', {alpha: false});
+    ctx.fillStyle = 'rgba(0, 255, 0, 0.5)';
+    ctx.fillRect(0, 0, 10, 10);
+    _assertPixelApprox(offscreenCanvas, 5,5, 0,127,0,255, 2);
+}, "Test that OffscreenCanvasRenderingContext2D with alpha disabled makes the OffscreenCanvas opaque");
+
+test(function() {
+    var offscreenCanvas = new OffscreenCanvas(10, 10);
+    var ctx = offscreenCanvas.getContext('2d', {alpha: true});
+    ctx.fillStyle = 'rgba(0, 255, 0, 0.5)';
+    ctx.fillRect(0, 0, 10, 10);
+    _assertPixelApprox(offscreenCanvas, 5,5, 0,255,0,127, 2);
+}, "Test that OffscreenCanvasRenderingContext2D with alpha enabled preserves the alpha");
+
+test(function() {
+    var offscreenCanvas = new OffscreenCanvas(10, 10);
+    var ctx = offscreenCanvas.getContext('2d');
+    ctx.fillStyle = 'rgba(0, 255, 0, 0.5)';
+    ctx.fillRect(0, 0, 10, 10);
+    _assertPixelApprox(offscreenCanvas, 5,5, 0,255,0,127, 2);
+}, "Test that 'alpha' context creation attribute is true by default");
+
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/manual/the-offscreen-canvas/offscreencanvas.resize.html b/testing/web-platform/tests/html/canvas/offscreen/manual/the-offscreen-canvas/offscreencanvas.resize.html
new file mode 100644
index 0000000000..e259f79ca2
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/manual/the-offscreen-canvas/offscreencanvas.resize.html
@@ -0,0 +1,236 @@
+
+Test resizing an OffscreenCanvas with a 2d context
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/manual/the-offscreen-canvas/offscreencanvas.transfer.lowlatency.nocrash.html b/testing/web-platform/tests/html/canvas/offscreen/manual/the-offscreen-canvas/offscreencanvas.transfer.lowlatency.nocrash.html
new file mode 100644
index 0000000000..1960841564
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/manual/the-offscreen-canvas/offscreencanvas.transfer.lowlatency.nocrash.html
@@ -0,0 +1,12 @@
+Transfer Low-Latency Canvas
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/manual/the-offscreen-canvas/offscreencanvas.transfer.to.imagebitmap.html b/testing/web-platform/tests/html/canvas/offscreen/manual/the-offscreen-canvas/offscreencanvas.transfer.to.imagebitmap.html
new file mode 100644
index 0000000000..6e1adf9591
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/manual/the-offscreen-canvas/offscreencanvas.transfer.to.imagebitmap.html
@@ -0,0 +1,112 @@
+
+
+
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/manual/the-offscreen-canvas/offscreencanvas.transfer.to.imagebitmap.nocrash.html b/testing/web-platform/tests/html/canvas/offscreen/manual/the-offscreen-canvas/offscreencanvas.transfer.to.imagebitmap.nocrash.html
new file mode 100644
index 0000000000..09a388ed35
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/manual/the-offscreen-canvas/offscreencanvas.transfer.to.imagebitmap.nocrash.html
@@ -0,0 +1,16 @@
+
+
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Tests that an ImageBitmap in Offscreen without content does not crash.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/manual/the-offscreen-canvas/offscreencanvas.transfer.to.imagebitmap.w.html b/testing/web-platform/tests/html/canvas/offscreen/manual/the-offscreen-canvas/offscreencanvas.transfer.to.imagebitmap.w.html
new file mode 100644
index 0000000000..b51ce0efa2
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/manual/the-offscreen-canvas/offscreencanvas.transfer.to.imagebitmap.w.html
@@ -0,0 +1,201 @@
+
+
+
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/manual/the-offscreen-canvas/offscreencanvas.transfercontrol.to.offscreen.html b/testing/web-platform/tests/html/canvas/offscreen/manual/the-offscreen-canvas/offscreencanvas.transfercontrol.to.offscreen.html
new file mode 100644
index 0000000000..fea375b2ad
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/manual/the-offscreen-canvas/offscreencanvas.transfercontrol.to.offscreen.html
@@ -0,0 +1,34 @@
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/manual/the-offscreen-canvas/offscreencanvas.transfercontrol.to.offscreen.w.html b/testing/web-platform/tests/html/canvas/offscreen/manual/the-offscreen-canvas/offscreencanvas.transfercontrol.to.offscreen.w.html
new file mode 100644
index 0000000000..1347e7b50b
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/manual/the-offscreen-canvas/offscreencanvas.transfercontrol.to.offscreen.w.html
@@ -0,0 +1,76 @@
+
+
+
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/manual/the-offscreen-canvas/offscreencanvas.transferrable.html b/testing/web-platform/tests/html/canvas/offscreen/manual/the-offscreen-canvas/offscreencanvas.transferrable.html
new file mode 100644
index 0000000000..d321c324fa
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/manual/the-offscreen-canvas/offscreencanvas.transferrable.html
@@ -0,0 +1,83 @@
+
+
+
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/manual/the-offscreen-canvas/offscreencanvas.transferrable.w.html b/testing/web-platform/tests/html/canvas/offscreen/manual/the-offscreen-canvas/offscreencanvas.transferrable.w.html
new file mode 100644
index 0000000000..38f981e8f0
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/manual/the-offscreen-canvas/offscreencanvas.transferrable.w.html
@@ -0,0 +1,142 @@
+
+
+
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/manual/transformations/2d.transformation.getTransform.html b/testing/web-platform/tests/html/canvas/offscreen/manual/transformations/2d.transformation.getTransform.html
new file mode 100644
index 0000000000..b3b70ac208
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/manual/transformations/2d.transformation.getTransform.html
@@ -0,0 +1,40 @@
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/manual/wide-gamut-canvas/2d.color.space.p3.convertToBlobp3.canvas.html b/testing/web-platform/tests/html/canvas/offscreen/manual/wide-gamut-canvas/2d.color.space.p3.convertToBlobp3.canvas.html
new file mode 100644
index 0000000000..9fc63a9f49
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/manual/wide-gamut-canvas/2d.color.space.p3.convertToBlobp3.canvas.html
@@ -0,0 +1,50 @@
+
+OffscreenCanvas test: 2d.color.space.p3.convertToBlob.p3.canvas
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.color.space.p3.convertToBlob.p3.canvas
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              test if toblob returns p3 data from p3 color space canvas
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arc.angle.1.html b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arc.angle.1.html
new file mode 100644
index 0000000000..bdd2c7a65f
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arc.angle.1.html
@@ -0,0 +1,34 @@
+
+
+OffscreenCanvas test: 2d.path.arc.angle.1
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.path.arc.angle.1
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              arc() draws pi/2 .. -pi anticlockwise correctly
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arc.angle.1.worker.js b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arc.angle.1.worker.js
new file mode 100644
index 0000000000..1b6a534c23
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arc.angle.1.worker.js
@@ -0,0 +1,29 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.path.arc.angle.1
+// Description:arc() draws pi/2 .. -pi anticlockwise correctly
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("arc() draws pi/2 .. -pi anticlockwise correctly");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#0f0';
+  ctx.fillRect(0, 0, 100, 50);
+  ctx.fillStyle = '#f00';
+  ctx.beginPath();
+  ctx.moveTo(100, 0);
+  ctx.arc(100, 0, 150, Math.PI/2, -Math.PI, true);
+  ctx.fill();
+  _assertPixel(canvas, 50,25, 0,255,0,255);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arc.angle.2.html b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arc.angle.2.html
new file mode 100644
index 0000000000..c92e83abd7
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arc.angle.2.html
@@ -0,0 +1,34 @@
+
+
+OffscreenCanvas test: 2d.path.arc.angle.2
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.path.arc.angle.2
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              arc() draws -3pi/2 .. -pi anticlockwise correctly
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arc.angle.2.worker.js b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arc.angle.2.worker.js
new file mode 100644
index 0000000000..25598c959d
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arc.angle.2.worker.js
@@ -0,0 +1,29 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.path.arc.angle.2
+// Description:arc() draws -3pi/2 .. -pi anticlockwise correctly
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("arc() draws -3pi/2 .. -pi anticlockwise correctly");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#0f0';
+  ctx.fillRect(0, 0, 100, 50);
+  ctx.fillStyle = '#f00';
+  ctx.beginPath();
+  ctx.moveTo(100, 0);
+  ctx.arc(100, 0, 150, -3*Math.PI/2, -Math.PI, true);
+  ctx.fill();
+  _assertPixel(canvas, 50,25, 0,255,0,255);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arc.angle.3.html b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arc.angle.3.html
new file mode 100644
index 0000000000..86170ac8c5
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arc.angle.3.html
@@ -0,0 +1,34 @@
+
+
+OffscreenCanvas test: 2d.path.arc.angle.3
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.path.arc.angle.3
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              arc() wraps angles mod 2pi when anticlockwise and end > start+2pi
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arc.angle.3.worker.js b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arc.angle.3.worker.js
new file mode 100644
index 0000000000..6841041d78
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arc.angle.3.worker.js
@@ -0,0 +1,29 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.path.arc.angle.3
+// Description:arc() wraps angles mod 2pi when anticlockwise and end > start+2pi
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("arc() wraps angles mod 2pi when anticlockwise and end > start+2pi");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#0f0';
+  ctx.fillRect(0, 0, 100, 50);
+  ctx.fillStyle = '#f00';
+  ctx.beginPath();
+  ctx.moveTo(100, 0);
+  ctx.arc(100, 0, 150, (512+1/2)*Math.PI, (1024-1)*Math.PI, true);
+  ctx.fill();
+  _assertPixel(canvas, 50,25, 0,255,0,255);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arc.angle.4.html b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arc.angle.4.html
new file mode 100644
index 0000000000..e694b99f70
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arc.angle.4.html
@@ -0,0 +1,37 @@
+
+
+OffscreenCanvas test: 2d.path.arc.angle.4
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.path.arc.angle.4
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              arc() draws a full circle when clockwise and end > start+2pi
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arc.angle.4.worker.js b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arc.angle.4.worker.js
new file mode 100644
index 0000000000..502175165f
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arc.angle.4.worker.js
@@ -0,0 +1,32 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.path.arc.angle.4
+// Description:arc() draws a full circle when clockwise and end > start+2pi
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("arc() draws a full circle when clockwise and end > start+2pi");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#f00';
+  ctx.fillRect(0, 0, 100, 50);
+  ctx.fillStyle = '#0f0';
+  ctx.beginPath();
+  ctx.moveTo(50, 25);
+  ctx.arc(50, 25, 60, (512+1/2)*Math.PI, (1024-1)*Math.PI, false);
+  ctx.fill();
+  _assertPixel(canvas, 1,1, 0,255,0,255);
+  _assertPixel(canvas, 98,1, 0,255,0,255);
+  _assertPixel(canvas, 1,48, 0,255,0,255);
+  _assertPixel(canvas, 98,48, 0,255,0,255);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arc.angle.5.html b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arc.angle.5.html
new file mode 100644
index 0000000000..7f0d9af19f
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arc.angle.5.html
@@ -0,0 +1,34 @@
+
+
+OffscreenCanvas test: 2d.path.arc.angle.5
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.path.arc.angle.5
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              arc() wraps angles mod 2pi when clockwise and start > end+2pi
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arc.angle.5.worker.js b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arc.angle.5.worker.js
new file mode 100644
index 0000000000..aa2320a92a
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arc.angle.5.worker.js
@@ -0,0 +1,29 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.path.arc.angle.5
+// Description:arc() wraps angles mod 2pi when clockwise and start > end+2pi
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("arc() wraps angles mod 2pi when clockwise and start > end+2pi");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#0f0';
+  ctx.fillRect(0, 0, 100, 50);
+  ctx.fillStyle = '#f00';
+  ctx.beginPath();
+  ctx.moveTo(100, 0);
+  ctx.arc(100, 0, 150, (1024-1)*Math.PI, (512+1/2)*Math.PI, false);
+  ctx.fill();
+  _assertPixel(canvas, 50,25, 0,255,0,255);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arc.angle.6.html b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arc.angle.6.html
new file mode 100644
index 0000000000..64cf6daeef
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arc.angle.6.html
@@ -0,0 +1,37 @@
+
+
+OffscreenCanvas test: 2d.path.arc.angle.6
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.path.arc.angle.6
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              arc() draws a full circle when anticlockwise and start > end+2pi
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arc.angle.6.worker.js b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arc.angle.6.worker.js
new file mode 100644
index 0000000000..929db397d3
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arc.angle.6.worker.js
@@ -0,0 +1,32 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.path.arc.angle.6
+// Description:arc() draws a full circle when anticlockwise and start > end+2pi
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("arc() draws a full circle when anticlockwise and start > end+2pi");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#f00';
+  ctx.fillRect(0, 0, 100, 50);
+  ctx.fillStyle = '#0f0';
+  ctx.beginPath();
+  ctx.moveTo(50, 25);
+  ctx.arc(50, 25, 60, (1024-1)*Math.PI, (512+1/2)*Math.PI, true);
+  ctx.fill();
+  _assertPixel(canvas, 1,1, 0,255,0,255);
+  _assertPixel(canvas, 98,1, 0,255,0,255);
+  _assertPixel(canvas, 1,48, 0,255,0,255);
+  _assertPixel(canvas, 98,48, 0,255,0,255);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arc.default.html b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arc.default.html
new file mode 100644
index 0000000000..ee42c04085
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arc.default.html
@@ -0,0 +1,34 @@
+
+
+OffscreenCanvas test: 2d.path.arc.default
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.path.arc.default
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              arc() with missing last argument defaults to clockwise
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arc.default.worker.js b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arc.default.worker.js
new file mode 100644
index 0000000000..da74713e4a
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arc.default.worker.js
@@ -0,0 +1,29 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.path.arc.default
+// Description:arc() with missing last argument defaults to clockwise
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("arc() with missing last argument defaults to clockwise");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#0f0';
+  ctx.fillRect(0, 0, 100, 50);
+  ctx.fillStyle = '#f00';
+  ctx.beginPath();
+  ctx.moveTo(100, 0);
+  ctx.arc(100, 0, 150, -Math.PI, Math.PI/2);
+  ctx.fill();
+  _assertPixel(canvas, 50,25, 0,255,0,255);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arc.empty.html b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arc.empty.html
new file mode 100644
index 0000000000..25414647b2
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arc.empty.html
@@ -0,0 +1,34 @@
+
+
+OffscreenCanvas test: 2d.path.arc.empty
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.path.arc.empty
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              arc() with an empty path does not draw a straight line to the start point
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arc.empty.worker.js b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arc.empty.worker.js
new file mode 100644
index 0000000000..9b1fbb1a38
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arc.empty.worker.js
@@ -0,0 +1,29 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.path.arc.empty
+// Description:arc() with an empty path does not draw a straight line to the start point
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("arc() with an empty path does not draw a straight line to the start point");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#0f0';
+  ctx.fillRect(0, 0, 100, 50);
+  ctx.lineWidth = 50;
+  ctx.strokeStyle = '#f00';
+  ctx.beginPath();
+  ctx.arc(200, 25, 5, 0, 2*Math.PI, true);
+  ctx.stroke();
+  _assertPixel(canvas, 50,25, 0,255,0,255);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arc.end.html b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arc.end.html
new file mode 100644
index 0000000000..b8459053f2
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arc.end.html
@@ -0,0 +1,36 @@
+
+
+OffscreenCanvas test: 2d.path.arc.end
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.path.arc.end
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              arc() adds the end point of the arc to the subpath
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arc.end.worker.js b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arc.end.worker.js
new file mode 100644
index 0000000000..963640a273
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arc.end.worker.js
@@ -0,0 +1,31 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.path.arc.end
+// Description:arc() adds the end point of the arc to the subpath
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("arc() adds the end point of the arc to the subpath");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#f00';
+  ctx.fillRect(0, 0, 100, 50);
+  ctx.lineWidth = 50;
+  ctx.strokeStyle = '#0f0';
+  ctx.beginPath();
+  ctx.moveTo(-100, 0);
+  ctx.arc(-100, 0, 25, -Math.PI/2, Math.PI/2, true);
+  ctx.lineTo(100, 25);
+  ctx.stroke();
+  _assertPixel(canvas, 50,25, 0,255,0,255);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arc.negative.html b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arc.negative.html
new file mode 100644
index 0000000000..6c81b9e0de
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arc.negative.html
@@ -0,0 +1,29 @@
+
+
+OffscreenCanvas test: 2d.path.arc.negative
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.path.arc.negative
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              arc() with negative radius throws INDEX_SIZE_ERR
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arc.negative.worker.js b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arc.negative.worker.js
new file mode 100644
index 0000000000..b48eb98474
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arc.negative.worker.js
@@ -0,0 +1,24 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.path.arc.negative
+// Description:arc() with negative radius throws INDEX_SIZE_ERR
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("arc() with negative radius throws INDEX_SIZE_ERR");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  assert_throws_dom("INDEX_SIZE_ERR", function() { ctx.arc(0, 0, -1, 0, 0, true); });
+  var path = new Path2D();
+  assert_throws_dom("INDEX_SIZE_ERR", function() { path.arc(10, 10, -5, 0, 1, false); });
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arc.nonempty.html b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arc.nonempty.html
new file mode 100644
index 0000000000..4d9ebe6d87
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arc.nonempty.html
@@ -0,0 +1,35 @@
+
+
+OffscreenCanvas test: 2d.path.arc.nonempty
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.path.arc.nonempty
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              arc() with a non-empty path does draw a straight line to the start point
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arc.nonempty.worker.js b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arc.nonempty.worker.js
new file mode 100644
index 0000000000..af6b4c9853
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arc.nonempty.worker.js
@@ -0,0 +1,30 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.path.arc.nonempty
+// Description:arc() with a non-empty path does draw a straight line to the start point
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("arc() with a non-empty path does draw a straight line to the start point");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#f00';
+  ctx.fillRect(0, 0, 100, 50);
+  ctx.lineWidth = 50;
+  ctx.strokeStyle = '#0f0';
+  ctx.beginPath();
+  ctx.moveTo(0, 25);
+  ctx.arc(200, 25, 5, 0, 2*Math.PI, true);
+  ctx.stroke();
+  _assertPixel(canvas, 50,25, 0,255,0,255);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arc.nonfinite.html b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arc.nonfinite.html
new file mode 100644
index 0000000000..b347a1e27a
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arc.nonfinite.html
@@ -0,0 +1,77 @@
+
+
+OffscreenCanvas test: 2d.path.arc.nonfinite
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.path.arc.nonfinite
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              arc() with Infinity/NaN is ignored
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arc.nonfinite.worker.js b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arc.nonfinite.worker.js
new file mode 100644
index 0000000000..50ff560e34
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arc.nonfinite.worker.js
@@ -0,0 +1,72 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.path.arc.nonfinite
+// Description:arc() with Infinity/NaN is ignored
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("arc() with Infinity/NaN is ignored");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#f00';
+  ctx.fillRect(0, 0, 100, 50);
+  ctx.moveTo(0, 0);
+  ctx.lineTo(100, 0);
+  ctx.arc(Infinity, 0, 50, 0, 2*Math.PI, true);
+  ctx.arc(-Infinity, 0, 50, 0, 2*Math.PI, true);
+  ctx.arc(NaN, 0, 50, 0, 2*Math.PI, true);
+  ctx.arc(0, Infinity, 50, 0, 2*Math.PI, true);
+  ctx.arc(0, -Infinity, 50, 0, 2*Math.PI, true);
+  ctx.arc(0, NaN, 50, 0, 2*Math.PI, true);
+  ctx.arc(0, 0, Infinity, 0, 2*Math.PI, true);
+  ctx.arc(0, 0, -Infinity, 0, 2*Math.PI, true);
+  ctx.arc(0, 0, NaN, 0, 2*Math.PI, true);
+  ctx.arc(0, 0, 50, Infinity, 2*Math.PI, true);
+  ctx.arc(0, 0, 50, -Infinity, 2*Math.PI, true);
+  ctx.arc(0, 0, 50, NaN, 2*Math.PI, true);
+  ctx.arc(0, 0, 50, 0, Infinity, true);
+  ctx.arc(0, 0, 50, 0, -Infinity, true);
+  ctx.arc(0, 0, 50, 0, NaN, true);
+  ctx.arc(Infinity, Infinity, 50, 0, 2*Math.PI, true);
+  ctx.arc(Infinity, Infinity, Infinity, 0, 2*Math.PI, true);
+  ctx.arc(Infinity, Infinity, Infinity, Infinity, 2*Math.PI, true);
+  ctx.arc(Infinity, Infinity, Infinity, Infinity, Infinity, true);
+  ctx.arc(Infinity, Infinity, Infinity, 0, Infinity, true);
+  ctx.arc(Infinity, Infinity, 50, Infinity, 2*Math.PI, true);
+  ctx.arc(Infinity, Infinity, 50, Infinity, Infinity, true);
+  ctx.arc(Infinity, Infinity, 50, 0, Infinity, true);
+  ctx.arc(Infinity, 0, Infinity, 0, 2*Math.PI, true);
+  ctx.arc(Infinity, 0, Infinity, Infinity, 2*Math.PI, true);
+  ctx.arc(Infinity, 0, Infinity, Infinity, Infinity, true);
+  ctx.arc(Infinity, 0, Infinity, 0, Infinity, true);
+  ctx.arc(Infinity, 0, 50, Infinity, 2*Math.PI, true);
+  ctx.arc(Infinity, 0, 50, Infinity, Infinity, true);
+  ctx.arc(Infinity, 0, 50, 0, Infinity, true);
+  ctx.arc(0, Infinity, Infinity, 0, 2*Math.PI, true);
+  ctx.arc(0, Infinity, Infinity, Infinity, 2*Math.PI, true);
+  ctx.arc(0, Infinity, Infinity, Infinity, Infinity, true);
+  ctx.arc(0, Infinity, Infinity, 0, Infinity, true);
+  ctx.arc(0, Infinity, 50, Infinity, 2*Math.PI, true);
+  ctx.arc(0, Infinity, 50, Infinity, Infinity, true);
+  ctx.arc(0, Infinity, 50, 0, Infinity, true);
+  ctx.arc(0, 0, Infinity, Infinity, 2*Math.PI, true);
+  ctx.arc(0, 0, Infinity, Infinity, Infinity, true);
+  ctx.arc(0, 0, Infinity, 0, Infinity, true);
+  ctx.arc(0, 0, 50, Infinity, Infinity, true);
+  ctx.lineTo(100, 50);
+  ctx.lineTo(0, 50);
+  ctx.fillStyle = '#0f0';
+  ctx.fill();
+  _assertPixel(canvas, 50,25, 0,255,0,255);
+  _assertPixel(canvas, 90,45, 0,255,0,255);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arc.scale.1.html b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arc.scale.1.html
new file mode 100644
index 0000000000..bf8a6f1f91
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arc.scale.1.html
@@ -0,0 +1,54 @@
+
+
+OffscreenCanvas test: 2d.path.arc.scale.1
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.path.arc.scale.1
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Non-uniformly scaled arcs are the right shape
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arc.scale.1.worker.js b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arc.scale.1.worker.js
new file mode 100644
index 0000000000..5d9619a920
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arc.scale.1.worker.js
@@ -0,0 +1,49 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.path.arc.scale.1
+// Description:Non-uniformly scaled arcs are the right shape
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("Non-uniformly scaled arcs are the right shape");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#f00';
+  ctx.fillRect(0, 0, 100, 50);
+  ctx.scale(2, 0.5);
+  ctx.fillStyle = '#0f0';
+  ctx.beginPath();
+  ctx.arc(25, 50, 56, 0, 2*Math.PI, false);
+  ctx.fill();
+  ctx.fillStyle = '#f00';
+  ctx.beginPath();
+  ctx.moveTo(-25, 50);
+  ctx.arc(-25, 50, 24, 0, 2*Math.PI, false);
+  ctx.moveTo(75, 50);
+  ctx.arc(75, 50, 24, 0, 2*Math.PI, false);
+  ctx.moveTo(25, -25);
+  ctx.arc(25, -25, 24, 0, 2*Math.PI, false);
+  ctx.moveTo(25, 125);
+  ctx.arc(25, 125, 24, 0, 2*Math.PI, false);
+  ctx.fill();
+
+  _assertPixel(canvas, 0,0, 0,255,0,255);
+  _assertPixel(canvas, 50,0, 0,255,0,255);
+  _assertPixel(canvas, 99,0, 0,255,0,255);
+  _assertPixel(canvas, 0,25, 0,255,0,255);
+  _assertPixel(canvas, 50,25, 0,255,0,255);
+  _assertPixel(canvas, 99,25, 0,255,0,255);
+  _assertPixel(canvas, 0,49, 0,255,0,255);
+  _assertPixel(canvas, 50,49, 0,255,0,255);
+  _assertPixel(canvas, 99,49, 0,255,0,255);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arc.scale.2.html b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arc.scale.2.html
new file mode 100644
index 0000000000..95376882cd
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arc.scale.2.html
@@ -0,0 +1,44 @@
+
+
+OffscreenCanvas test: 2d.path.arc.scale.2
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.path.arc.scale.2
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Highly scaled arcs are the right shape
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arc.scale.2.worker.js b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arc.scale.2.worker.js
new file mode 100644
index 0000000000..c655dad30f
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arc.scale.2.worker.js
@@ -0,0 +1,39 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.path.arc.scale.2
+// Description:Highly scaled arcs are the right shape
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("Highly scaled arcs are the right shape");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#f00';
+  ctx.fillRect(0, 0, 100, 50);
+  ctx.scale(100, 100);
+  ctx.strokeStyle = '#0f0';
+  ctx.lineWidth = 1.2;
+  ctx.beginPath();
+  ctx.arc(0, 0, 0.6, 0, Math.PI/2, false);
+  ctx.stroke();
+
+  _assertPixel(canvas, 1,1, 0,255,0,255);
+  _assertPixel(canvas, 50,1, 0,255,0,255);
+  _assertPixel(canvas, 98,1, 0,255,0,255);
+  _assertPixel(canvas, 1,25, 0,255,0,255);
+  _assertPixel(canvas, 50,25, 0,255,0,255);
+  _assertPixel(canvas, 98,25, 0,255,0,255);
+  _assertPixel(canvas, 1,48, 0,255,0,255);
+  _assertPixel(canvas, 50,48, 0,255,0,255);
+  _assertPixel(canvas, 98,48, 0,255,0,255);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arc.selfintersect.1.html b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arc.selfintersect.1.html
new file mode 100644
index 0000000000..624b307af7
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arc.selfintersect.1.html
@@ -0,0 +1,38 @@
+
+
+OffscreenCanvas test: 2d.path.arc.selfintersect.1
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.path.arc.selfintersect.1
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              arc() with lineWidth > 2*radius is drawn sensibly
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arc.selfintersect.1.worker.js b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arc.selfintersect.1.worker.js
new file mode 100644
index 0000000000..6c77dbd5b1
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arc.selfintersect.1.worker.js
@@ -0,0 +1,33 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.path.arc.selfintersect.1
+// Description:arc() with lineWidth > 2*radius is drawn sensibly
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("arc() with lineWidth > 2*radius is drawn sensibly");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#0f0';
+  ctx.fillRect(0, 0, 100, 50);
+  ctx.lineWidth = 200;
+  ctx.strokeStyle = '#f00';
+  ctx.beginPath();
+  ctx.arc(100, 50, 25, 0, -Math.PI/2, true);
+  ctx.stroke();
+  ctx.beginPath();
+  ctx.arc(0, 0, 25, 0, -Math.PI/2, true);
+  ctx.stroke();
+  _assertPixel(canvas, 1,1, 0,255,0,255);
+  _assertPixel(canvas, 50,25, 0,255,0,255);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arc.selfintersect.2.html b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arc.selfintersect.2.html
new file mode 100644
index 0000000000..b49aa2437a
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arc.selfintersect.2.html
@@ -0,0 +1,42 @@
+
+
+OffscreenCanvas test: 2d.path.arc.selfintersect.2
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.path.arc.selfintersect.2
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              arc() with lineWidth > 2*radius is drawn sensibly
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arc.selfintersect.2.worker.js b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arc.selfintersect.2.worker.js
new file mode 100644
index 0000000000..2bbdacd46d
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arc.selfintersect.2.worker.js
@@ -0,0 +1,37 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.path.arc.selfintersect.2
+// Description:arc() with lineWidth > 2*radius is drawn sensibly
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("arc() with lineWidth > 2*radius is drawn sensibly");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#f00';
+  ctx.fillRect(0, 0, 100, 50);
+  ctx.lineWidth = 180;
+  ctx.strokeStyle = '#0f0';
+  ctx.beginPath();
+  ctx.arc(-50, 50, 25, 0, -Math.PI/2, true);
+  ctx.stroke();
+  ctx.beginPath();
+  ctx.arc(100, 0, 25, 0, -Math.PI/2, true);
+  ctx.stroke();
+  _assertPixel(canvas, 50,25, 0,255,0,255);
+  _assertPixel(canvas, 90,10, 0,255,0,255);
+  _assertPixel(canvas, 97,1, 0,255,0,255);
+  _assertPixel(canvas, 97,2, 0,255,0,255);
+  _assertPixel(canvas, 97,3, 0,255,0,255);
+  _assertPixel(canvas, 2,48, 0,255,0,255);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arc.shape.1.html b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arc.shape.1.html
new file mode 100644
index 0000000000..ceb3cb380c
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arc.shape.1.html
@@ -0,0 +1,39 @@
+
+
+OffscreenCanvas test: 2d.path.arc.shape.1
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.path.arc.shape.1
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              arc() from 0 to pi does not draw anything in the wrong half
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arc.shape.1.worker.js b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arc.shape.1.worker.js
new file mode 100644
index 0000000000..e1058ae96d
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arc.shape.1.worker.js
@@ -0,0 +1,34 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.path.arc.shape.1
+// Description:arc() from 0 to pi does not draw anything in the wrong half
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("arc() from 0 to pi does not draw anything in the wrong half");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#0f0';
+  ctx.fillRect(0, 0, 100, 50);
+  ctx.lineWidth = 50;
+  ctx.strokeStyle = '#f00';
+  ctx.beginPath();
+  ctx.arc(50, 50, 50, 0, Math.PI, false);
+  ctx.stroke();
+  _assertPixel(canvas, 50,25, 0,255,0,255);
+  _assertPixel(canvas, 1,1, 0,255,0,255);
+  _assertPixel(canvas, 98,1, 0,255,0,255);
+  _assertPixel(canvas, 1,48, 0,255,0,255);
+  _assertPixel(canvas, 20,48, 0,255,0,255);
+  _assertPixel(canvas, 98,48, 0,255,0,255);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arc.shape.2.html b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arc.shape.2.html
new file mode 100644
index 0000000000..a39fd03947
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arc.shape.2.html
@@ -0,0 +1,39 @@
+
+
+OffscreenCanvas test: 2d.path.arc.shape.2
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.path.arc.shape.2
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              arc() from 0 to pi draws stuff in the right half
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arc.shape.2.worker.js b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arc.shape.2.worker.js
new file mode 100644
index 0000000000..d444d9b04e
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arc.shape.2.worker.js
@@ -0,0 +1,34 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.path.arc.shape.2
+// Description:arc() from 0 to pi draws stuff in the right half
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("arc() from 0 to pi draws stuff in the right half");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#f00';
+  ctx.fillRect(0, 0, 100, 50);
+  ctx.lineWidth = 100;
+  ctx.strokeStyle = '#0f0';
+  ctx.beginPath();
+  ctx.arc(50, 50, 50, 0, Math.PI, true);
+  ctx.stroke();
+  _assertPixel(canvas, 50,25, 0,255,0,255);
+  _assertPixel(canvas, 1,1, 0,255,0,255);
+  _assertPixel(canvas, 98,1, 0,255,0,255);
+  _assertPixel(canvas, 1,48, 0,255,0,255);
+  _assertPixel(canvas, 20,48, 0,255,0,255);
+  _assertPixel(canvas, 98,48, 0,255,0,255);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arc.shape.3.html b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arc.shape.3.html
new file mode 100644
index 0000000000..853814aef2
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arc.shape.3.html
@@ -0,0 +1,38 @@
+
+
+OffscreenCanvas test: 2d.path.arc.shape.3
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.path.arc.shape.3
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              arc() from 0 to -pi/2 does not draw anything in the wrong quadrant
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arc.shape.3.worker.js b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arc.shape.3.worker.js
new file mode 100644
index 0000000000..b8008e778b
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arc.shape.3.worker.js
@@ -0,0 +1,33 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.path.arc.shape.3
+// Description:arc() from 0 to -pi/2 does not draw anything in the wrong quadrant
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("arc() from 0 to -pi/2 does not draw anything in the wrong quadrant");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#0f0';
+  ctx.fillRect(0, 0, 100, 50);
+  ctx.lineWidth = 100;
+  ctx.strokeStyle = '#f00';
+  ctx.beginPath();
+  ctx.arc(0, 50, 50, 0, -Math.PI/2, false);
+  ctx.stroke();
+  _assertPixel(canvas, 50,25, 0,255,0,255);
+  _assertPixel(canvas, 1,1, 0,255,0,255);
+  _assertPixel(canvas, 98,1, 0,255,0,255);
+  _assertPixel(canvas, 1,48, 0,255,0,255);
+  _assertPixel(canvas, 98,48, 0,255,0,255);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arc.shape.4.html b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arc.shape.4.html
new file mode 100644
index 0000000000..e6221947df
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arc.shape.4.html
@@ -0,0 +1,38 @@
+
+
+OffscreenCanvas test: 2d.path.arc.shape.4
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.path.arc.shape.4
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              arc() from 0 to -pi/2 draws stuff in the right quadrant
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arc.shape.4.worker.js b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arc.shape.4.worker.js
new file mode 100644
index 0000000000..9174641c20
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arc.shape.4.worker.js
@@ -0,0 +1,33 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.path.arc.shape.4
+// Description:arc() from 0 to -pi/2 draws stuff in the right quadrant
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("arc() from 0 to -pi/2 draws stuff in the right quadrant");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#f00';
+  ctx.fillRect(0, 0, 100, 50);
+  ctx.lineWidth = 150;
+  ctx.strokeStyle = '#0f0';
+  ctx.beginPath();
+  ctx.arc(-50, 50, 100, 0, -Math.PI/2, true);
+  ctx.stroke();
+  _assertPixel(canvas, 50,25, 0,255,0,255);
+  _assertPixel(canvas, 1,1, 0,255,0,255);
+  _assertPixel(canvas, 98,1, 0,255,0,255);
+  _assertPixel(canvas, 1,48, 0,255,0,255);
+  _assertPixel(canvas, 98,48, 0,255,0,255);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arc.shape.5.html b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arc.shape.5.html
new file mode 100644
index 0000000000..968a1c58c0
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arc.shape.5.html
@@ -0,0 +1,38 @@
+
+
+OffscreenCanvas test: 2d.path.arc.shape.5
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.path.arc.shape.5
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              arc() from 0 to 5pi does not draw crazy things
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arc.shape.5.worker.js b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arc.shape.5.worker.js
new file mode 100644
index 0000000000..7f40e4341a
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arc.shape.5.worker.js
@@ -0,0 +1,33 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.path.arc.shape.5
+// Description:arc() from 0 to 5pi does not draw crazy things
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("arc() from 0 to 5pi does not draw crazy things");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#0f0';
+  ctx.fillRect(0, 0, 100, 50);
+  ctx.lineWidth = 200;
+  ctx.strokeStyle = '#f00';
+  ctx.beginPath();
+  ctx.arc(300, 0, 100, 0, 5*Math.PI, false);
+  ctx.stroke();
+  _assertPixel(canvas, 50,25, 0,255,0,255);
+  _assertPixel(canvas, 1,1, 0,255,0,255);
+  _assertPixel(canvas, 98,1, 0,255,0,255);
+  _assertPixel(canvas, 1,48, 0,255,0,255);
+  _assertPixel(canvas, 98,48, 0,255,0,255);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arc.twopie.1.html b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arc.twopie.1.html
new file mode 100644
index 0000000000..ced1207a9b
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arc.twopie.1.html
@@ -0,0 +1,34 @@
+
+
+OffscreenCanvas test: 2d.path.arc.twopie.1
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.path.arc.twopie.1
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              arc() draws nothing when end = start + 2pi-e and anticlockwise
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arc.twopie.1.worker.js b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arc.twopie.1.worker.js
new file mode 100644
index 0000000000..e9abf086e0
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arc.twopie.1.worker.js
@@ -0,0 +1,29 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.path.arc.twopie.1
+// Description:arc() draws nothing when end = start + 2pi-e and anticlockwise
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("arc() draws nothing when end = start + 2pi-e and anticlockwise");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#0f0';
+  ctx.fillRect(0, 0, 100, 50);
+  ctx.strokeStyle = '#f00';
+  ctx.lineWidth = 100;
+  ctx.beginPath();
+  ctx.arc(50, 25, 50, 0, 2*Math.PI - 1e-4, true);
+  ctx.stroke();
+  _assertPixel(canvas, 50,20, 0,255,0,255);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arc.twopie.2.html b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arc.twopie.2.html
new file mode 100644
index 0000000000..4948b10f2f
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arc.twopie.2.html
@@ -0,0 +1,34 @@
+
+
+OffscreenCanvas test: 2d.path.arc.twopie.2
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.path.arc.twopie.2
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              arc() draws a full circle when end = start + 2pi-e and clockwise
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arc.twopie.2.worker.js b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arc.twopie.2.worker.js
new file mode 100644
index 0000000000..5e9c51e5e3
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arc.twopie.2.worker.js
@@ -0,0 +1,29 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.path.arc.twopie.2
+// Description:arc() draws a full circle when end = start + 2pi-e and clockwise
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("arc() draws a full circle when end = start + 2pi-e and clockwise");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#f00';
+  ctx.fillRect(0, 0, 100, 50);
+  ctx.strokeStyle = '#0f0';
+  ctx.lineWidth = 100;
+  ctx.beginPath();
+  ctx.arc(50, 25, 50, 0, 2*Math.PI - 1e-4, false);
+  ctx.stroke();
+  _assertPixel(canvas, 50,20, 0,255,0,255);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arc.twopie.3.html b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arc.twopie.3.html
new file mode 100644
index 0000000000..c4036fc06e
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arc.twopie.3.html
@@ -0,0 +1,34 @@
+
+
+OffscreenCanvas test: 2d.path.arc.twopie.3
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.path.arc.twopie.3
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              arc() draws a full circle when end = start + 2pi+e and anticlockwise
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arc.twopie.3.worker.js b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arc.twopie.3.worker.js
new file mode 100644
index 0000000000..ad72fbd0af
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arc.twopie.3.worker.js
@@ -0,0 +1,29 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.path.arc.twopie.3
+// Description:arc() draws a full circle when end = start + 2pi+e and anticlockwise
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("arc() draws a full circle when end = start + 2pi+e and anticlockwise");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#f00';
+  ctx.fillRect(0, 0, 100, 50);
+  ctx.strokeStyle = '#0f0';
+  ctx.lineWidth = 100;
+  ctx.beginPath();
+  ctx.arc(50, 25, 50, 0, 2*Math.PI + 1e-4, true);
+  ctx.stroke();
+  _assertPixel(canvas, 50,20, 0,255,0,255);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arc.twopie.4.html b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arc.twopie.4.html
new file mode 100644
index 0000000000..392f00e652
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arc.twopie.4.html
@@ -0,0 +1,34 @@
+
+
+OffscreenCanvas test: 2d.path.arc.twopie.4
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.path.arc.twopie.4
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              arc() draws nothing when end = start + 2pi+e and clockwise
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arc.twopie.4.worker.js b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arc.twopie.4.worker.js
new file mode 100644
index 0000000000..15d799209c
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arc.twopie.4.worker.js
@@ -0,0 +1,29 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.path.arc.twopie.4
+// Description:arc() draws nothing when end = start + 2pi+e and clockwise
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("arc() draws nothing when end = start + 2pi+e and clockwise");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#f00';
+  ctx.fillRect(0, 0, 100, 50);
+  ctx.strokeStyle = '#0f0';
+  ctx.lineWidth = 100;
+  ctx.beginPath();
+  ctx.arc(50, 25, 50, 0, 2*Math.PI + 1e-4, false);
+  ctx.stroke();
+  _assertPixel(canvas, 50,20, 0,255,0,255);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arc.zero.1.html b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arc.zero.1.html
new file mode 100644
index 0000000000..5757ab3ddf
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arc.zero.1.html
@@ -0,0 +1,34 @@
+
+
+OffscreenCanvas test: 2d.path.arc.zero.1
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.path.arc.zero.1
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              arc() draws nothing when startAngle = endAngle and anticlockwise
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arc.zero.1.worker.js b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arc.zero.1.worker.js
new file mode 100644
index 0000000000..5a6d35f691
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arc.zero.1.worker.js
@@ -0,0 +1,29 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.path.arc.zero.1
+// Description:arc() draws nothing when startAngle = endAngle and anticlockwise
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("arc() draws nothing when startAngle = endAngle and anticlockwise");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#0f0';
+  ctx.fillRect(0, 0, 100, 50);
+  ctx.strokeStyle = '#f00';
+  ctx.lineWidth = 100;
+  ctx.beginPath();
+  ctx.arc(50, 25, 50, 0, 0, true);
+  ctx.stroke();
+  _assertPixel(canvas, 50,20, 0,255,0,255);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arc.zero.2.html b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arc.zero.2.html
new file mode 100644
index 0000000000..69f8472443
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arc.zero.2.html
@@ -0,0 +1,34 @@
+
+
+OffscreenCanvas test: 2d.path.arc.zero.2
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.path.arc.zero.2
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              arc() draws nothing when startAngle = endAngle and clockwise
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arc.zero.2.worker.js b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arc.zero.2.worker.js
new file mode 100644
index 0000000000..a285462fc0
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arc.zero.2.worker.js
@@ -0,0 +1,29 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.path.arc.zero.2
+// Description:arc() draws nothing when startAngle = endAngle and clockwise
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("arc() draws nothing when startAngle = endAngle and clockwise");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#0f0';
+  ctx.fillRect(0, 0, 100, 50);
+  ctx.strokeStyle = '#f00';
+  ctx.lineWidth = 100;
+  ctx.beginPath();
+  ctx.arc(50, 25, 50, 0, 0, false);
+  ctx.stroke();
+  _assertPixel(canvas, 50,20, 0,255,0,255);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arc.zeroradius.html b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arc.zeroradius.html
new file mode 100644
index 0000000000..7303b7dc1c
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arc.zeroradius.html
@@ -0,0 +1,35 @@
+
+
+OffscreenCanvas test: 2d.path.arc.zeroradius
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.path.arc.zeroradius
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              arc() with zero radius draws a line to the start point
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arc.zeroradius.worker.js b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arc.zeroradius.worker.js
new file mode 100644
index 0000000000..183acc1bbb
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arc.zeroradius.worker.js
@@ -0,0 +1,30 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.path.arc.zeroradius
+// Description:arc() with zero radius draws a line to the start point
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("arc() with zero radius draws a line to the start point");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#f00'
+  ctx.fillRect(0, 0, 100, 50);
+  ctx.lineWidth = 50;
+  ctx.strokeStyle = '#0f0';
+  ctx.beginPath();
+  ctx.moveTo(0, 25);
+  ctx.arc(200, 25, 0, 0, Math.PI, true);
+  ctx.stroke();
+  _assertPixel(canvas, 50,25, 0,255,0,255);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arcTo.coincide.1.html b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arcTo.coincide.1.html
new file mode 100644
index 0000000000..e7558d628f
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arcTo.coincide.1.html
@@ -0,0 +1,46 @@
+
+
+OffscreenCanvas test: 2d.path.arcTo.coincide.1
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.path.arcTo.coincide.1
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              arcTo() has no effect if P0 = P1
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arcTo.coincide.1.worker.js b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arcTo.coincide.1.worker.js
new file mode 100644
index 0000000000..80a74c6d91
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arcTo.coincide.1.worker.js
@@ -0,0 +1,41 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.path.arcTo.coincide.1
+// Description:arcTo() has no effect if P0 = P1
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("arcTo() has no effect if P0 = P1");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#f00';
+  ctx.fillRect(0, 0, 100, 50);
+  ctx.lineWidth = 50;
+
+  ctx.strokeStyle = '#0f0';
+  ctx.beginPath();
+  ctx.moveTo(0, 25);
+  ctx.arcTo(0, 25, 50, 1000, 1);
+  ctx.lineTo(100, 25);
+  ctx.stroke();
+
+  ctx.strokeStyle = '#f00';
+  ctx.beginPath();
+  ctx.moveTo(50, 25);
+  ctx.arcTo(50, 25, 100, 25, 1);
+  ctx.stroke();
+
+  _assertPixel(canvas, 50,1, 0,255,0,255);
+  _assertPixel(canvas, 50,25, 0,255,0,255);
+  _assertPixel(canvas, 50,48, 0,255,0,255);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arcTo.coincide.2.html b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arcTo.coincide.2.html
new file mode 100644
index 0000000000..18ac31524d
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arcTo.coincide.2.html
@@ -0,0 +1,36 @@
+
+
+OffscreenCanvas test: 2d.path.arcTo.coincide.2
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.path.arcTo.coincide.2
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              arcTo() draws a straight line to P1 if P1 = P2
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arcTo.coincide.2.worker.js b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arcTo.coincide.2.worker.js
new file mode 100644
index 0000000000..a35ffe6977
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arcTo.coincide.2.worker.js
@@ -0,0 +1,31 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.path.arcTo.coincide.2
+// Description:arcTo() draws a straight line to P1 if P1 = P2
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("arcTo() draws a straight line to P1 if P1 = P2");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#f00';
+  ctx.fillRect(0, 0, 100, 50);
+  ctx.lineWidth = 50;
+  ctx.strokeStyle = '#0f0';
+  ctx.beginPath();
+  ctx.moveTo(0, 25);
+  ctx.arcTo(100, 25, 100, 25, 1);
+  ctx.stroke();
+
+  _assertPixel(canvas, 50,25, 0,255,0,255);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arcTo.collinear.1.html b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arcTo.collinear.1.html
new file mode 100644
index 0000000000..b9bcc7b238
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arcTo.collinear.1.html
@@ -0,0 +1,43 @@
+
+
+OffscreenCanvas test: 2d.path.arcTo.collinear.1
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.path.arcTo.collinear.1
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              arcTo() with all points on a line, and P1 between P0/P2, draws a straight line to P1
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arcTo.collinear.1.worker.js b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arcTo.collinear.1.worker.js
new file mode 100644
index 0000000000..a814b1af07
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arcTo.collinear.1.worker.js
@@ -0,0 +1,38 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.path.arcTo.collinear.1
+// Description:arcTo() with all points on a line, and P1 between P0/P2, draws a straight line to P1
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("arcTo() with all points on a line, and P1 between P0/P2, draws a straight line to P1");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#f00';
+  ctx.fillRect(0, 0, 100, 50);
+  ctx.lineWidth = 50;
+
+  ctx.strokeStyle = '#0f0';
+  ctx.beginPath();
+  ctx.moveTo(0, 25);
+  ctx.arcTo(100, 25, 200, 25, 1);
+  ctx.stroke();
+
+  ctx.strokeStyle = '#f00';
+  ctx.beginPath();
+  ctx.moveTo(-100, 25);
+  ctx.arcTo(0, 25, 100, 25, 1);
+  ctx.stroke();
+
+  _assertPixel(canvas, 50,25, 0,255,0,255);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arcTo.collinear.2.html b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arcTo.collinear.2.html
new file mode 100644
index 0000000000..f51a7af206
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arcTo.collinear.2.html
@@ -0,0 +1,43 @@
+
+
+OffscreenCanvas test: 2d.path.arcTo.collinear.2
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.path.arcTo.collinear.2
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              arcTo() with all points on a line, and P2 between P0/P1, draws a straight line to P1
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arcTo.collinear.2.worker.js b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arcTo.collinear.2.worker.js
new file mode 100644
index 0000000000..ba9a75ed4e
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arcTo.collinear.2.worker.js
@@ -0,0 +1,38 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.path.arcTo.collinear.2
+// Description:arcTo() with all points on a line, and P2 between P0/P1, draws a straight line to P1
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("arcTo() with all points on a line, and P2 between P0/P1, draws a straight line to P1");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#f00';
+  ctx.fillRect(0, 0, 100, 50);
+  ctx.lineWidth = 50;
+
+  ctx.strokeStyle = '#0f0';
+  ctx.beginPath();
+  ctx.moveTo(0, 25);
+  ctx.arcTo(100, 25, 10, 25, 1);
+  ctx.stroke();
+
+  ctx.strokeStyle = '#f00';
+  ctx.beginPath();
+  ctx.moveTo(100, 25);
+  ctx.arcTo(200, 25, 110, 25, 1);
+  ctx.stroke();
+
+  _assertPixel(canvas, 50,25, 0,255,0,255);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arcTo.collinear.3.html b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arcTo.collinear.3.html
new file mode 100644
index 0000000000..568d0f8f2b
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arcTo.collinear.3.html
@@ -0,0 +1,48 @@
+
+
+OffscreenCanvas test: 2d.path.arcTo.collinear.3
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.path.arcTo.collinear.3
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              arcTo() with all points on a line, and P0 between P1/P2, draws a straight line to P1
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arcTo.collinear.3.worker.js b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arcTo.collinear.3.worker.js
new file mode 100644
index 0000000000..8087909cb7
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arcTo.collinear.3.worker.js
@@ -0,0 +1,43 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.path.arcTo.collinear.3
+// Description:arcTo() with all points on a line, and P0 between P1/P2, draws a straight line to P1
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("arcTo() with all points on a line, and P0 between P1/P2, draws a straight line to P1");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#f00';
+  ctx.fillRect(0, 0, 100, 50);
+  ctx.lineWidth = 50;
+
+  ctx.strokeStyle = '#0f0';
+  ctx.beginPath();
+  ctx.moveTo(0, 25);
+  ctx.arcTo(100, 25, -100, 25, 1);
+  ctx.stroke();
+
+  ctx.strokeStyle = '#f00';
+  ctx.beginPath();
+  ctx.moveTo(100, 25);
+  ctx.arcTo(200, 25, 0, 25, 1);
+  ctx.stroke();
+
+  ctx.beginPath();
+  ctx.moveTo(-100, 25);
+  ctx.arcTo(0, 25, -200, 25, 1);
+  ctx.stroke();
+
+  _assertPixel(canvas, 50,25, 0,255,0,255);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arcTo.ensuresubpath.1.html b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arcTo.ensuresubpath.1.html
new file mode 100644
index 0000000000..ec1bd0399d
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arcTo.ensuresubpath.1.html
@@ -0,0 +1,34 @@
+
+
+OffscreenCanvas test: 2d.path.arcTo.ensuresubpath.1
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.path.arcTo.ensuresubpath.1
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              If there is no subpath, the first control point is added (and nothing is drawn up to it)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arcTo.ensuresubpath.1.worker.js b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arcTo.ensuresubpath.1.worker.js
new file mode 100644
index 0000000000..74d71b6253
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arcTo.ensuresubpath.1.worker.js
@@ -0,0 +1,29 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.path.arcTo.ensuresubpath.1
+// Description:If there is no subpath, the first control point is added (and nothing is drawn up to it)
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("If there is no subpath, the first control point is added (and nothing is drawn up to it)");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#0f0';
+  ctx.fillRect(0, 0, 100, 50);
+  ctx.lineWidth = 50;
+  ctx.strokeStyle = '#f00';
+  ctx.beginPath();
+  ctx.arcTo(100, 50, 200, 50, 0.1);
+  ctx.stroke();
+  _assertPixel(canvas, 50,25, 0,255,0,255);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arcTo.ensuresubpath.2.html b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arcTo.ensuresubpath.2.html
new file mode 100644
index 0000000000..60ee458524
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arcTo.ensuresubpath.2.html
@@ -0,0 +1,35 @@
+
+
+OffscreenCanvas test: 2d.path.arcTo.ensuresubpath.2
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.path.arcTo.ensuresubpath.2
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              If there is no subpath, the first control point is added
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arcTo.ensuresubpath.2.worker.js b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arcTo.ensuresubpath.2.worker.js
new file mode 100644
index 0000000000..76790925af
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arcTo.ensuresubpath.2.worker.js
@@ -0,0 +1,30 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.path.arcTo.ensuresubpath.2
+// Description:If there is no subpath, the first control point is added
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("If there is no subpath, the first control point is added");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#f00';
+  ctx.fillRect(0, 0, 100, 50);
+  ctx.lineWidth = 50;
+  ctx.strokeStyle = '#0f0';
+  ctx.beginPath();
+  ctx.arcTo(0, 25, 50, 250, 0.1); // adds (x1,y1), draws nothing
+  ctx.lineTo(100, 25);
+  ctx.stroke();
+  _assertPixel(canvas, 50,25, 0,255,0,255);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arcTo.negative.html b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arcTo.negative.html
new file mode 100644
index 0000000000..c35e293a6f
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arcTo.negative.html
@@ -0,0 +1,29 @@
+
+
+OffscreenCanvas test: 2d.path.arcTo.negative
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.path.arcTo.negative
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              arcTo() with negative radius throws an exception
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arcTo.negative.worker.js b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arcTo.negative.worker.js
new file mode 100644
index 0000000000..104e7a6387
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arcTo.negative.worker.js
@@ -0,0 +1,24 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.path.arcTo.negative
+// Description:arcTo() with negative radius throws an exception
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("arcTo() with negative radius throws an exception");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  assert_throws_dom("INDEX_SIZE_ERR", function() { ctx.arcTo(0, 0, 0, 0, -1); });
+  var path = new Path2D();
+  assert_throws_dom("INDEX_SIZE_ERR", function() { path.arcTo(10, 10, 20, 20, -5); });
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arcTo.nonfinite.html b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arcTo.nonfinite.html
new file mode 100644
index 0000000000..9d2256d79c
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arcTo.nonfinite.html
@@ -0,0 +1,75 @@
+
+
+OffscreenCanvas test: 2d.path.arcTo.nonfinite
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.path.arcTo.nonfinite
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              arcTo() with Infinity/NaN is ignored
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arcTo.nonfinite.worker.js b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arcTo.nonfinite.worker.js
new file mode 100644
index 0000000000..1d2c913cfe
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arcTo.nonfinite.worker.js
@@ -0,0 +1,70 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.path.arcTo.nonfinite
+// Description:arcTo() with Infinity/NaN is ignored
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("arcTo() with Infinity/NaN is ignored");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.moveTo(0, 0);
+  ctx.lineTo(100, 0);
+  ctx.arcTo(Infinity, 50, 0, 50, 0);
+  ctx.arcTo(-Infinity, 50, 0, 50, 0);
+  ctx.arcTo(NaN, 50, 0, 50, 0);
+  ctx.arcTo(0, Infinity, 0, 50, 0);
+  ctx.arcTo(0, -Infinity, 0, 50, 0);
+  ctx.arcTo(0, NaN, 0, 50, 0);
+  ctx.arcTo(0, 50, Infinity, 50, 0);
+  ctx.arcTo(0, 50, -Infinity, 50, 0);
+  ctx.arcTo(0, 50, NaN, 50, 0);
+  ctx.arcTo(0, 50, 0, Infinity, 0);
+  ctx.arcTo(0, 50, 0, -Infinity, 0);
+  ctx.arcTo(0, 50, 0, NaN, 0);
+  ctx.arcTo(0, 50, 0, 50, Infinity);
+  ctx.arcTo(0, 50, 0, 50, -Infinity);
+  ctx.arcTo(0, 50, 0, 50, NaN);
+  ctx.arcTo(Infinity, Infinity, 0, 50, 0);
+  ctx.arcTo(Infinity, Infinity, Infinity, 50, 0);
+  ctx.arcTo(Infinity, Infinity, Infinity, Infinity, 0);
+  ctx.arcTo(Infinity, Infinity, Infinity, Infinity, Infinity);
+  ctx.arcTo(Infinity, Infinity, Infinity, 50, Infinity);
+  ctx.arcTo(Infinity, Infinity, 0, Infinity, 0);
+  ctx.arcTo(Infinity, Infinity, 0, Infinity, Infinity);
+  ctx.arcTo(Infinity, Infinity, 0, 50, Infinity);
+  ctx.arcTo(Infinity, 50, Infinity, 50, 0);
+  ctx.arcTo(Infinity, 50, Infinity, Infinity, 0);
+  ctx.arcTo(Infinity, 50, Infinity, Infinity, Infinity);
+  ctx.arcTo(Infinity, 50, Infinity, 50, Infinity);
+  ctx.arcTo(Infinity, 50, 0, Infinity, 0);
+  ctx.arcTo(Infinity, 50, 0, Infinity, Infinity);
+  ctx.arcTo(Infinity, 50, 0, 50, Infinity);
+  ctx.arcTo(0, Infinity, Infinity, 50, 0);
+  ctx.arcTo(0, Infinity, Infinity, Infinity, 0);
+  ctx.arcTo(0, Infinity, Infinity, Infinity, Infinity);
+  ctx.arcTo(0, Infinity, Infinity, 50, Infinity);
+  ctx.arcTo(0, Infinity, 0, Infinity, 0);
+  ctx.arcTo(0, Infinity, 0, Infinity, Infinity);
+  ctx.arcTo(0, Infinity, 0, 50, Infinity);
+  ctx.arcTo(0, 50, Infinity, Infinity, 0);
+  ctx.arcTo(0, 50, Infinity, Infinity, Infinity);
+  ctx.arcTo(0, 50, Infinity, 50, Infinity);
+  ctx.arcTo(0, 50, 0, Infinity, Infinity);
+  ctx.lineTo(100, 50);
+  ctx.lineTo(0, 50);
+  ctx.fillStyle = '#0f0';
+  ctx.fill();
+  _assertPixel(canvas, 50,25, 0,255,0,255);
+  _assertPixel(canvas, 90,45, 0,255,0,255);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arcTo.scale.html b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arcTo.scale.html
new file mode 100644
index 0000000000..26dfa640ff
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arcTo.scale.html
@@ -0,0 +1,47 @@
+
+
+OffscreenCanvas test: 2d.path.arcTo.scale
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.path.arcTo.scale
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              arcTo scales the curve, not just the control points
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arcTo.scale.worker.js b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arcTo.scale.worker.js
new file mode 100644
index 0000000000..dc41e6d92d
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arcTo.scale.worker.js
@@ -0,0 +1,42 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.path.arcTo.scale
+// Description:arcTo scales the curve, not just the control points
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("arcTo scales the curve, not just the control points");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#f00';
+  ctx.fillRect(0, 0, 100, 50);
+
+  ctx.fillStyle = '#0f0';
+  ctx.beginPath();
+  ctx.moveTo(0, 50);
+  ctx.translate(100, 0);
+  ctx.scale(0.1, 1);
+  ctx.arcTo(50, 50, 50, 0, 50);
+  ctx.lineTo(-1000, 0);
+  ctx.fill();
+
+  _assertPixel(canvas, 0,0, 0,255,0,255);
+  _assertPixel(canvas, 50,0, 0,255,0,255);
+  _assertPixel(canvas, 99,0, 0,255,0,255);
+  _assertPixel(canvas, 0,25, 0,255,0,255);
+  _assertPixel(canvas, 50,25, 0,255,0,255);
+  _assertPixel(canvas, 99,25, 0,255,0,255);
+  _assertPixel(canvas, 0,49, 0,255,0,255);
+  _assertPixel(canvas, 50,49, 0,255,0,255);
+  _assertPixel(canvas, 99,49, 0,255,0,255);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arcTo.shape.curve1.html b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arcTo.shape.curve1.html
new file mode 100644
index 0000000000..f7d10dd61a
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arcTo.shape.curve1.html
@@ -0,0 +1,60 @@
+
+
+OffscreenCanvas test: 2d.path.arcTo.shape.curve1
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.path.arcTo.shape.curve1
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              arcTo() curves in the right kind of shape
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arcTo.shape.curve1.worker.js b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arcTo.shape.curve1.worker.js
new file mode 100644
index 0000000000..c7e61ab576
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arcTo.shape.curve1.worker.js
@@ -0,0 +1,55 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.path.arcTo.shape.curve1
+// Description:arcTo() curves in the right kind of shape
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("arcTo() curves in the right kind of shape");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  var tol = 1.5; // tolerance to avoid antialiasing artifacts
+
+  ctx.fillStyle = '#0f0';
+  ctx.fillRect(0, 0, 100, 50);
+
+  ctx.strokeStyle = '#f00';
+  ctx.lineWidth = 10;
+  ctx.beginPath();
+  ctx.moveTo(10, 25);
+  ctx.arcTo(75, 25, 75, 60, 20);
+  ctx.stroke();
+
+  ctx.fillStyle = '#0f0';
+  ctx.beginPath();
+  ctx.rect(10, 20, 45, 10);
+  ctx.moveTo(80, 45);
+  ctx.arc(55, 45, 25+tol, 0, -Math.PI/2, true);
+  ctx.arc(55, 45, 15-tol, -Math.PI/2, 0, false);
+  ctx.fill();
+
+  _assertPixel(canvas, 50,25, 0,255,0,255);
+  _assertPixel(canvas, 55,19, 0,255,0,255);
+  _assertPixel(canvas, 55,20, 0,255,0,255);
+  _assertPixel(canvas, 55,21, 0,255,0,255);
+  _assertPixel(canvas, 64,22, 0,255,0,255);
+  _assertPixel(canvas, 65,21, 0,255,0,255);
+  _assertPixel(canvas, 72,28, 0,255,0,255);
+  _assertPixel(canvas, 73,27, 0,255,0,255);
+  _assertPixel(canvas, 78,36, 0,255,0,255);
+  _assertPixel(canvas, 79,35, 0,255,0,255);
+  _assertPixel(canvas, 80,44, 0,255,0,255);
+  _assertPixel(canvas, 80,45, 0,255,0,255);
+  _assertPixel(canvas, 80,46, 0,255,0,255);
+  _assertPixel(canvas, 65,45, 0,255,0,255);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arcTo.shape.curve2.html b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arcTo.shape.curve2.html
new file mode 100644
index 0000000000..1a023322b2
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arcTo.shape.curve2.html
@@ -0,0 +1,59 @@
+
+
+OffscreenCanvas test: 2d.path.arcTo.shape.curve2
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.path.arcTo.shape.curve2
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              arcTo() curves in the right kind of shape
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arcTo.shape.curve2.worker.js b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arcTo.shape.curve2.worker.js
new file mode 100644
index 0000000000..f00e506f30
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arcTo.shape.curve2.worker.js
@@ -0,0 +1,54 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.path.arcTo.shape.curve2
+// Description:arcTo() curves in the right kind of shape
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("arcTo() curves in the right kind of shape");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  var tol = 1.5; // tolerance to avoid antialiasing artifacts
+
+  ctx.fillStyle = '#0f0';
+  ctx.fillRect(0, 0, 100, 50);
+
+  ctx.fillStyle = '#f00';
+  ctx.beginPath();
+  ctx.rect(10, 20, 45, 10);
+  ctx.moveTo(80, 45);
+  ctx.arc(55, 45, 25-tol, 0, -Math.PI/2, true);
+  ctx.arc(55, 45, 15+tol, -Math.PI/2, 0, false);
+  ctx.fill();
+
+  ctx.strokeStyle = '#0f0';
+  ctx.lineWidth = 10;
+  ctx.beginPath();
+  ctx.moveTo(10, 25);
+  ctx.arcTo(75, 25, 75, 60, 20);
+  ctx.stroke();
+
+  _assertPixel(canvas, 50,25, 0,255,0,255);
+  _assertPixel(canvas, 55,19, 0,255,0,255);
+  _assertPixel(canvas, 55,20, 0,255,0,255);
+  _assertPixel(canvas, 55,21, 0,255,0,255);
+  _assertPixel(canvas, 64,22, 0,255,0,255);
+  _assertPixel(canvas, 65,21, 0,255,0,255);
+  _assertPixel(canvas, 72,28, 0,255,0,255);
+  _assertPixel(canvas, 73,27, 0,255,0,255);
+  _assertPixel(canvas, 78,36, 0,255,0,255);
+  _assertPixel(canvas, 79,35, 0,255,0,255);
+  _assertPixel(canvas, 80,44, 0,255,0,255);
+  _assertPixel(canvas, 80,45, 0,255,0,255);
+  _assertPixel(canvas, 80,46, 0,255,0,255);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arcTo.shape.end.html b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arcTo.shape.end.html
new file mode 100644
index 0000000000..3f8af61215
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arcTo.shape.end.html
@@ -0,0 +1,40 @@
+
+
+OffscreenCanvas test: 2d.path.arcTo.shape.end
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.path.arcTo.shape.end
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              arcTo() does not draw anything from P1 to P2
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arcTo.shape.end.worker.js b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arcTo.shape.end.worker.js
new file mode 100644
index 0000000000..20cc956a44
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arcTo.shape.end.worker.js
@@ -0,0 +1,35 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.path.arcTo.shape.end
+// Description:arcTo() does not draw anything from P1 to P2
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("arcTo() does not draw anything from P1 to P2");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#0f0';
+  ctx.fillRect(0, 0, 100, 50);
+  ctx.strokeStyle = '#f00';
+  ctx.lineWidth = 50;
+  ctx.beginPath();
+  ctx.moveTo(-100, -100);
+  ctx.arcTo(-100, 25, 200, 25, 10);
+  ctx.stroke();
+
+  _assertPixel(canvas, 1,1, 0,255,0,255);
+  _assertPixel(canvas, 1,48, 0,255,0,255);
+  _assertPixel(canvas, 50,25, 0,255,0,255);
+  _assertPixel(canvas, 98,1, 0,255,0,255);
+  _assertPixel(canvas, 98,48, 0,255,0,255);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arcTo.shape.start.html b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arcTo.shape.start.html
new file mode 100644
index 0000000000..a426a19d8a
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arcTo.shape.start.html
@@ -0,0 +1,40 @@
+
+
+OffscreenCanvas test: 2d.path.arcTo.shape.start
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.path.arcTo.shape.start
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              arcTo() draws a straight line from P0 to P1
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arcTo.shape.start.worker.js b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arcTo.shape.start.worker.js
new file mode 100644
index 0000000000..cebf27a821
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arcTo.shape.start.worker.js
@@ -0,0 +1,35 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.path.arcTo.shape.start
+// Description:arcTo() draws a straight line from P0 to P1
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("arcTo() draws a straight line from P0 to P1");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#f00';
+  ctx.fillRect(0, 0, 100, 50);
+  ctx.strokeStyle = '#0f0';
+  ctx.lineWidth = 50;
+  ctx.beginPath();
+  ctx.moveTo(0, 25);
+  ctx.arcTo(200, 25, 200, 50, 10);
+  ctx.stroke();
+
+  _assertPixel(canvas, 1,1, 0,255,0,255);
+  _assertPixel(canvas, 1,48, 0,255,0,255);
+  _assertPixel(canvas, 50,25, 0,255,0,255);
+  _assertPixel(canvas, 98,1, 0,255,0,255);
+  _assertPixel(canvas, 98,48, 0,255,0,255);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arcTo.transformation.html b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arcTo.transformation.html
new file mode 100644
index 0000000000..842210138a
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arcTo.transformation.html
@@ -0,0 +1,46 @@
+
+
+OffscreenCanvas test: 2d.path.arcTo.transformation
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.path.arcTo.transformation
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              arcTo joins up to the last subpath point correctly
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arcTo.transformation.worker.js b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arcTo.transformation.worker.js
new file mode 100644
index 0000000000..585a500079
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arcTo.transformation.worker.js
@@ -0,0 +1,41 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.path.arcTo.transformation
+// Description:arcTo joins up to the last subpath point correctly
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("arcTo joins up to the last subpath point correctly");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#f00';
+  ctx.fillRect(0, 0, 100, 50);
+
+  ctx.fillStyle = '#0f0';
+  ctx.beginPath();
+  ctx.moveTo(0, 50);
+  ctx.translate(100, 0);
+  ctx.arcTo(50, 50, 50, 0, 50);
+  ctx.lineTo(-100, 0);
+  ctx.fill();
+
+  _assertPixel(canvas, 0,0, 0,255,0,255);
+  _assertPixel(canvas, 50,0, 0,255,0,255);
+  _assertPixel(canvas, 99,0, 0,255,0,255);
+  _assertPixel(canvas, 0,25, 0,255,0,255);
+  _assertPixel(canvas, 50,25, 0,255,0,255);
+  _assertPixel(canvas, 99,25, 0,255,0,255);
+  _assertPixel(canvas, 0,49, 0,255,0,255);
+  _assertPixel(canvas, 50,49, 0,255,0,255);
+  _assertPixel(canvas, 99,49, 0,255,0,255);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arcTo.zero.1.html b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arcTo.zero.1.html
new file mode 100644
index 0000000000..a367385551
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arcTo.zero.1.html
@@ -0,0 +1,43 @@
+
+
+OffscreenCanvas test: 2d.path.arcTo.zero.1
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.path.arcTo.zero.1
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              arcTo() with zero radius draws a straight line from P0 to P1
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arcTo.zero.1.worker.js b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arcTo.zero.1.worker.js
new file mode 100644
index 0000000000..8f6d979a55
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arcTo.zero.1.worker.js
@@ -0,0 +1,38 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.path.arcTo.zero.1
+// Description:arcTo() with zero radius draws a straight line from P0 to P1
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("arcTo() with zero radius draws a straight line from P0 to P1");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#f00';
+  ctx.fillRect(0, 0, 100, 50);
+  ctx.lineWidth = 50;
+
+  ctx.strokeStyle = '#0f0';
+  ctx.beginPath();
+  ctx.moveTo(0, 25);
+  ctx.arcTo(100, 25, 100, 100, 0);
+  ctx.stroke();
+
+  ctx.strokeStyle = '#f00';
+  ctx.beginPath();
+  ctx.moveTo(0, -25);
+  ctx.arcTo(50, -25, 50, 50, 0);
+  ctx.stroke();
+
+  _assertPixel(canvas, 50,25, 0,255,0,255);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arcTo.zero.2.html b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arcTo.zero.2.html
new file mode 100644
index 0000000000..87ab4e13de
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arcTo.zero.2.html
@@ -0,0 +1,43 @@
+
+
+OffscreenCanvas test: 2d.path.arcTo.zero.2
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.path.arcTo.zero.2
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              arcTo() with zero radius draws a straight line from P0 to P1, even when all points are collinear
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arcTo.zero.2.worker.js b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arcTo.zero.2.worker.js
new file mode 100644
index 0000000000..0a45976325
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.arcTo.zero.2.worker.js
@@ -0,0 +1,38 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.path.arcTo.zero.2
+// Description:arcTo() with zero radius draws a straight line from P0 to P1, even when all points are collinear
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("arcTo() with zero radius draws a straight line from P0 to P1, even when all points are collinear");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#f00';
+  ctx.fillRect(0, 0, 100, 50);
+  ctx.lineWidth = 50;
+
+  ctx.strokeStyle = '#0f0';
+  ctx.beginPath();
+  ctx.moveTo(0, 25);
+  ctx.arcTo(100, 25, -100, 25, 0);
+  ctx.stroke();
+
+  ctx.strokeStyle = '#f00';
+  ctx.beginPath();
+  ctx.moveTo(100, 25);
+  ctx.arcTo(200, 25, 50, 25, 0);
+  ctx.stroke();
+
+  _assertPixel(canvas, 50,25, 0,255,0,255);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.beginPath.html b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.beginPath.html
new file mode 100644
index 0000000000..b2043d604d
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.beginPath.html
@@ -0,0 +1,33 @@
+
+
+OffscreenCanvas test: 2d.path.beginPath
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.path.beginPath
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.beginPath.worker.js b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.beginPath.worker.js
new file mode 100644
index 0000000000..35a4acc84d
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.beginPath.worker.js
@@ -0,0 +1,28 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.path.beginPath
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#0f0';
+  ctx.fillRect(0, 0, 100, 50);
+  ctx.rect(0, 0, 100, 50);
+  ctx.beginPath();
+  ctx.fillStyle = '#f00';
+  ctx.fill();
+  _assertPixel(canvas, 50,25, 0,255,0,255);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.bezierCurveTo.basic.html b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.bezierCurveTo.basic.html
new file mode 100644
index 0000000000..099919060b
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.bezierCurveTo.basic.html
@@ -0,0 +1,35 @@
+
+
+OffscreenCanvas test: 2d.path.bezierCurveTo.basic
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.path.bezierCurveTo.basic
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.bezierCurveTo.basic.worker.js b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.bezierCurveTo.basic.worker.js
new file mode 100644
index 0000000000..e7c86a08f9
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.bezierCurveTo.basic.worker.js
@@ -0,0 +1,30 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.path.bezierCurveTo.basic
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#f00';
+  ctx.fillRect(0, 0, 100, 50);
+  ctx.strokeStyle = '#0f0';
+  ctx.lineWidth = 50;
+  ctx.beginPath();
+  ctx.moveTo(0, 25);
+  ctx.bezierCurveTo(100, 25, 100, 25, 100, 25);
+  ctx.stroke();
+  _assertPixel(canvas, 50,25, 0,255,0,255);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.bezierCurveTo.ensuresubpath.1.html b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.bezierCurveTo.ensuresubpath.1.html
new file mode 100644
index 0000000000..6a11d1bfbb
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.bezierCurveTo.ensuresubpath.1.html
@@ -0,0 +1,35 @@
+
+
+OffscreenCanvas test: 2d.path.bezierCurveTo.ensuresubpath.1
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.path.bezierCurveTo.ensuresubpath.1
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              If there is no subpath, the first control point is added (and nothing is drawn up to it)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.bezierCurveTo.ensuresubpath.1.worker.js b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.bezierCurveTo.ensuresubpath.1.worker.js
new file mode 100644
index 0000000000..d6ef6f3f1b
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.bezierCurveTo.ensuresubpath.1.worker.js
@@ -0,0 +1,30 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.path.bezierCurveTo.ensuresubpath.1
+// Description:If there is no subpath, the first control point is added (and nothing is drawn up to it)
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("If there is no subpath, the first control point is added (and nothing is drawn up to it)");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#0f0';
+  ctx.fillRect(0, 0, 100, 50);
+  ctx.strokeStyle = '#f00';
+  ctx.lineWidth = 50;
+  ctx.beginPath();
+  ctx.bezierCurveTo(100, 50, 200, 50, 200, 50);
+  ctx.stroke();
+  _assertPixel(canvas, 50,25, 0,255,0,255);
+  _assertPixel(canvas, 95,45, 0,255,0,255);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.bezierCurveTo.ensuresubpath.2.html b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.bezierCurveTo.ensuresubpath.2.html
new file mode 100644
index 0000000000..d2afd19f66
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.bezierCurveTo.ensuresubpath.2.html
@@ -0,0 +1,35 @@
+
+
+OffscreenCanvas test: 2d.path.bezierCurveTo.ensuresubpath.2
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.path.bezierCurveTo.ensuresubpath.2
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              If there is no subpath, the first control point is added
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.bezierCurveTo.ensuresubpath.2.worker.js b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.bezierCurveTo.ensuresubpath.2.worker.js
new file mode 100644
index 0000000000..6860e60f4a
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.bezierCurveTo.ensuresubpath.2.worker.js
@@ -0,0 +1,30 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.path.bezierCurveTo.ensuresubpath.2
+// Description:If there is no subpath, the first control point is added
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("If there is no subpath, the first control point is added");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#f00';
+  ctx.fillRect(0, 0, 100, 50);
+  ctx.strokeStyle = '#0f0';
+  ctx.lineWidth = 50;
+  ctx.beginPath();
+  ctx.bezierCurveTo(0, 25, 100, 25, 100, 25);
+  ctx.stroke();
+  _assertPixel(canvas, 50,25, 0,255,0,255);
+  _assertPixel(canvas, 5,45, 0,255,0,255);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.bezierCurveTo.nonfinite.html b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.bezierCurveTo.nonfinite.html
new file mode 100644
index 0000000000..b49e2f43f3
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.bezierCurveTo.nonfinite.html
@@ -0,0 +1,109 @@
+
+
+OffscreenCanvas test: 2d.path.bezierCurveTo.nonfinite
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.path.bezierCurveTo.nonfinite
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              bezierCurveTo() with Infinity/NaN is ignored
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.bezierCurveTo.nonfinite.worker.js b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.bezierCurveTo.nonfinite.worker.js
new file mode 100644
index 0000000000..7eaf278f6c
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.bezierCurveTo.nonfinite.worker.js
@@ -0,0 +1,104 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.path.bezierCurveTo.nonfinite
+// Description:bezierCurveTo() with Infinity/NaN is ignored
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("bezierCurveTo() with Infinity/NaN is ignored");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.moveTo(0, 0);
+  ctx.lineTo(100, 0);
+  ctx.bezierCurveTo(Infinity, 50, 0, 50, 0, 50);
+  ctx.bezierCurveTo(-Infinity, 50, 0, 50, 0, 50);
+  ctx.bezierCurveTo(NaN, 50, 0, 50, 0, 50);
+  ctx.bezierCurveTo(0, Infinity, 0, 50, 0, 50);
+  ctx.bezierCurveTo(0, -Infinity, 0, 50, 0, 50);
+  ctx.bezierCurveTo(0, NaN, 0, 50, 0, 50);
+  ctx.bezierCurveTo(0, 50, Infinity, 50, 0, 50);
+  ctx.bezierCurveTo(0, 50, -Infinity, 50, 0, 50);
+  ctx.bezierCurveTo(0, 50, NaN, 50, 0, 50);
+  ctx.bezierCurveTo(0, 50, 0, Infinity, 0, 50);
+  ctx.bezierCurveTo(0, 50, 0, -Infinity, 0, 50);
+  ctx.bezierCurveTo(0, 50, 0, NaN, 0, 50);
+  ctx.bezierCurveTo(0, 50, 0, 50, Infinity, 50);
+  ctx.bezierCurveTo(0, 50, 0, 50, -Infinity, 50);
+  ctx.bezierCurveTo(0, 50, 0, 50, NaN, 50);
+  ctx.bezierCurveTo(0, 50, 0, 50, 0, Infinity);
+  ctx.bezierCurveTo(0, 50, 0, 50, 0, -Infinity);
+  ctx.bezierCurveTo(0, 50, 0, 50, 0, NaN);
+  ctx.bezierCurveTo(Infinity, Infinity, 0, 50, 0, 50);
+  ctx.bezierCurveTo(Infinity, Infinity, Infinity, 50, 0, 50);
+  ctx.bezierCurveTo(Infinity, Infinity, Infinity, Infinity, 0, 50);
+  ctx.bezierCurveTo(Infinity, Infinity, Infinity, Infinity, Infinity, 50);
+  ctx.bezierCurveTo(Infinity, Infinity, Infinity, Infinity, Infinity, Infinity);
+  ctx.bezierCurveTo(Infinity, Infinity, Infinity, Infinity, 0, Infinity);
+  ctx.bezierCurveTo(Infinity, Infinity, Infinity, 50, Infinity, 50);
+  ctx.bezierCurveTo(Infinity, Infinity, Infinity, 50, Infinity, Infinity);
+  ctx.bezierCurveTo(Infinity, Infinity, Infinity, 50, 0, Infinity);
+  ctx.bezierCurveTo(Infinity, Infinity, 0, Infinity, 0, 50);
+  ctx.bezierCurveTo(Infinity, Infinity, 0, Infinity, Infinity, 50);
+  ctx.bezierCurveTo(Infinity, Infinity, 0, Infinity, Infinity, Infinity);
+  ctx.bezierCurveTo(Infinity, Infinity, 0, Infinity, 0, Infinity);
+  ctx.bezierCurveTo(Infinity, Infinity, 0, 50, Infinity, 50);
+  ctx.bezierCurveTo(Infinity, Infinity, 0, 50, Infinity, Infinity);
+  ctx.bezierCurveTo(Infinity, Infinity, 0, 50, 0, Infinity);
+  ctx.bezierCurveTo(Infinity, 50, Infinity, 50, 0, 50);
+  ctx.bezierCurveTo(Infinity, 50, Infinity, Infinity, 0, 50);
+  ctx.bezierCurveTo(Infinity, 50, Infinity, Infinity, Infinity, 50);
+  ctx.bezierCurveTo(Infinity, 50, Infinity, Infinity, Infinity, Infinity);
+  ctx.bezierCurveTo(Infinity, 50, Infinity, Infinity, 0, Infinity);
+  ctx.bezierCurveTo(Infinity, 50, Infinity, 50, Infinity, 50);
+  ctx.bezierCurveTo(Infinity, 50, Infinity, 50, Infinity, Infinity);
+  ctx.bezierCurveTo(Infinity, 50, Infinity, 50, 0, Infinity);
+  ctx.bezierCurveTo(Infinity, 50, 0, Infinity, 0, 50);
+  ctx.bezierCurveTo(Infinity, 50, 0, Infinity, Infinity, 50);
+  ctx.bezierCurveTo(Infinity, 50, 0, Infinity, Infinity, Infinity);
+  ctx.bezierCurveTo(Infinity, 50, 0, Infinity, 0, Infinity);
+  ctx.bezierCurveTo(Infinity, 50, 0, 50, Infinity, 50);
+  ctx.bezierCurveTo(Infinity, 50, 0, 50, Infinity, Infinity);
+  ctx.bezierCurveTo(Infinity, 50, 0, 50, 0, Infinity);
+  ctx.bezierCurveTo(0, Infinity, Infinity, 50, 0, 50);
+  ctx.bezierCurveTo(0, Infinity, Infinity, Infinity, 0, 50);
+  ctx.bezierCurveTo(0, Infinity, Infinity, Infinity, Infinity, 50);
+  ctx.bezierCurveTo(0, Infinity, Infinity, Infinity, Infinity, Infinity);
+  ctx.bezierCurveTo(0, Infinity, Infinity, Infinity, 0, Infinity);
+  ctx.bezierCurveTo(0, Infinity, Infinity, 50, Infinity, 50);
+  ctx.bezierCurveTo(0, Infinity, Infinity, 50, Infinity, Infinity);
+  ctx.bezierCurveTo(0, Infinity, Infinity, 50, 0, Infinity);
+  ctx.bezierCurveTo(0, Infinity, 0, Infinity, 0, 50);
+  ctx.bezierCurveTo(0, Infinity, 0, Infinity, Infinity, 50);
+  ctx.bezierCurveTo(0, Infinity, 0, Infinity, Infinity, Infinity);
+  ctx.bezierCurveTo(0, Infinity, 0, Infinity, 0, Infinity);
+  ctx.bezierCurveTo(0, Infinity, 0, 50, Infinity, 50);
+  ctx.bezierCurveTo(0, Infinity, 0, 50, Infinity, Infinity);
+  ctx.bezierCurveTo(0, Infinity, 0, 50, 0, Infinity);
+  ctx.bezierCurveTo(0, 50, Infinity, Infinity, 0, 50);
+  ctx.bezierCurveTo(0, 50, Infinity, Infinity, Infinity, 50);
+  ctx.bezierCurveTo(0, 50, Infinity, Infinity, Infinity, Infinity);
+  ctx.bezierCurveTo(0, 50, Infinity, Infinity, 0, Infinity);
+  ctx.bezierCurveTo(0, 50, Infinity, 50, Infinity, 50);
+  ctx.bezierCurveTo(0, 50, Infinity, 50, Infinity, Infinity);
+  ctx.bezierCurveTo(0, 50, Infinity, 50, 0, Infinity);
+  ctx.bezierCurveTo(0, 50, 0, Infinity, Infinity, 50);
+  ctx.bezierCurveTo(0, 50, 0, Infinity, Infinity, Infinity);
+  ctx.bezierCurveTo(0, 50, 0, Infinity, 0, Infinity);
+  ctx.bezierCurveTo(0, 50, 0, 50, Infinity, Infinity);
+  ctx.lineTo(100, 50);
+  ctx.lineTo(0, 50);
+  ctx.fillStyle = '#0f0';
+  ctx.fill();
+  _assertPixel(canvas, 50,25, 0,255,0,255);
+  _assertPixel(canvas, 90,45, 0,255,0,255);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.bezierCurveTo.scaled.html b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.bezierCurveTo.scaled.html
new file mode 100644
index 0000000000..10a085e9de
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.bezierCurveTo.scaled.html
@@ -0,0 +1,40 @@
+
+
+OffscreenCanvas test: 2d.path.bezierCurveTo.scaled
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.path.bezierCurveTo.scaled
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.bezierCurveTo.scaled.worker.js b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.bezierCurveTo.scaled.worker.js
new file mode 100644
index 0000000000..5098fe83eb
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.bezierCurveTo.scaled.worker.js
@@ -0,0 +1,35 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.path.bezierCurveTo.scaled
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#f00';
+  ctx.fillRect(0, 0, 100, 50);
+  ctx.scale(1000, 1000);
+  ctx.strokeStyle = '#0f0';
+  ctx.lineWidth = 0.055;
+  ctx.beginPath();
+  ctx.moveTo(-2, 3.1);
+  ctx.bezierCurveTo(-2, -1, 2.1, -1, 2.1, 3.1);
+  ctx.stroke();
+  _assertPixel(canvas, 50,25, 0,255,0,255);
+  _assertPixel(canvas, 1,1, 0,255,0,255);
+  _assertPixel(canvas, 98,1, 0,255,0,255);
+  _assertPixel(canvas, 1,48, 0,255,0,255);
+  _assertPixel(canvas, 98,48, 0,255,0,255);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.bezierCurveTo.shape.html b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.bezierCurveTo.shape.html
new file mode 100644
index 0000000000..fc6b9273e0
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.bezierCurveTo.shape.html
@@ -0,0 +1,39 @@
+
+
+OffscreenCanvas test: 2d.path.bezierCurveTo.shape
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.path.bezierCurveTo.shape
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.bezierCurveTo.shape.worker.js b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.bezierCurveTo.shape.worker.js
new file mode 100644
index 0000000000..58f601c5d5
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.bezierCurveTo.shape.worker.js
@@ -0,0 +1,34 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.path.bezierCurveTo.shape
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#f00';
+  ctx.fillRect(0, 0, 100, 50);
+  ctx.strokeStyle = '#0f0';
+  ctx.lineWidth = 55;
+  ctx.beginPath();
+  ctx.moveTo(-2000, 3100);
+  ctx.bezierCurveTo(-2000, -1000, 2100, -1000, 2100, 3100);
+  ctx.stroke();
+  _assertPixel(canvas, 50,25, 0,255,0,255);
+  _assertPixel(canvas, 1,1, 0,255,0,255);
+  _assertPixel(canvas, 98,1, 0,255,0,255);
+  _assertPixel(canvas, 1,48, 0,255,0,255);
+  _assertPixel(canvas, 98,48, 0,255,0,255);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.clip.basic.1.html b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.clip.basic.1.html
new file mode 100644
index 0000000000..e90be3d73f
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.clip.basic.1.html
@@ -0,0 +1,37 @@
+
+
+OffscreenCanvas test: 2d.path.clip.basic.1
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.path.clip.basic.1
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.clip.basic.1.worker.js b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.clip.basic.1.worker.js
new file mode 100644
index 0000000000..708608e1e0
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.clip.basic.1.worker.js
@@ -0,0 +1,32 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.path.clip.basic.1
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#f00';
+  ctx.fillRect(0, 0, 100, 50);
+
+  ctx.beginPath();
+  ctx.rect(0, 0, 100, 50);
+  ctx.clip();
+
+  ctx.fillStyle = '#0f0';
+  ctx.fillRect(0, 0, 100, 50);
+
+  _assertPixel(canvas, 50,25, 0,255,0,255);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.clip.basic.2.html b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.clip.basic.2.html
new file mode 100644
index 0000000000..6426ba2d83
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.clip.basic.2.html
@@ -0,0 +1,37 @@
+
+
+OffscreenCanvas test: 2d.path.clip.basic.2
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.path.clip.basic.2
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.clip.basic.2.worker.js b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.clip.basic.2.worker.js
new file mode 100644
index 0000000000..1ec28b6205
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.clip.basic.2.worker.js
@@ -0,0 +1,32 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.path.clip.basic.2
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#0f0';
+  ctx.fillRect(0, 0, 100, 50);
+
+  ctx.beginPath();
+  ctx.rect(-100, 0, 100, 50);
+  ctx.clip();
+
+  ctx.fillStyle = '#f00';
+  ctx.fillRect(0, 0, 100, 50);
+
+  _assertPixel(canvas, 50,25, 0,255,0,255);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.clip.empty.html b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.clip.empty.html
new file mode 100644
index 0000000000..30e0d6cba4
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.clip.empty.html
@@ -0,0 +1,36 @@
+
+
+OffscreenCanvas test: 2d.path.clip.empty
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.path.clip.empty
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.clip.empty.worker.js b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.clip.empty.worker.js
new file mode 100644
index 0000000000..3f91a7e2e7
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.clip.empty.worker.js
@@ -0,0 +1,31 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.path.clip.empty
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#0f0';
+  ctx.fillRect(0, 0, 100, 50);
+
+  ctx.beginPath();
+  ctx.clip();
+
+  ctx.fillStyle = '#f00';
+  ctx.fillRect(0, 0, 100, 50);
+
+  _assertPixel(canvas, 50,25, 0,255,0,255);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.clip.intersect.html b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.clip.intersect.html
new file mode 100644
index 0000000000..94607f6d92
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.clip.intersect.html
@@ -0,0 +1,40 @@
+
+
+OffscreenCanvas test: 2d.path.clip.intersect
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.path.clip.intersect
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.clip.intersect.worker.js b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.clip.intersect.worker.js
new file mode 100644
index 0000000000..8c0fcb68bd
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.clip.intersect.worker.js
@@ -0,0 +1,35 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.path.clip.intersect
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#0f0';
+  ctx.fillRect(0, 0, 100, 50);
+
+  ctx.beginPath();
+  ctx.rect(0, 0, 50, 50);
+  ctx.clip();
+  ctx.beginPath();
+  ctx.rect(50, 0, 50, 50)
+  ctx.clip();
+
+  ctx.fillStyle = '#f00';
+  ctx.fillRect(0, 0, 100, 50);
+
+  _assertPixel(canvas, 50,25, 0,255,0,255);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.clip.unaffected.html b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.clip.unaffected.html
new file mode 100644
index 0000000000..e9b69282af
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.clip.unaffected.html
@@ -0,0 +1,42 @@
+
+
+OffscreenCanvas test: 2d.path.clip.unaffected
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.path.clip.unaffected
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.clip.unaffected.worker.js b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.clip.unaffected.worker.js
new file mode 100644
index 0000000000..d65a421d33
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.clip.unaffected.worker.js
@@ -0,0 +1,37 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.path.clip.unaffected
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#f00';
+  ctx.fillRect(0, 0, 100, 50);
+
+  ctx.fillStyle = '#0f0';
+
+  ctx.beginPath();
+  ctx.moveTo(0, 0);
+  ctx.lineTo(0, 50);
+  ctx.lineTo(100, 50);
+  ctx.lineTo(100, 0);
+  ctx.clip();
+
+  ctx.lineTo(0, 0);
+  ctx.fill();
+
+  _assertPixel(canvas, 50,25, 0,255,0,255);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.clip.winding.1.html b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.clip.winding.1.html
new file mode 100644
index 0000000000..2fd7c1abbf
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.clip.winding.1.html
@@ -0,0 +1,45 @@
+
+
+OffscreenCanvas test: 2d.path.clip.winding.1
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.path.clip.winding.1
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.clip.winding.1.worker.js b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.clip.winding.1.worker.js
new file mode 100644
index 0000000000..aa89fd55c3
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.clip.winding.1.worker.js
@@ -0,0 +1,40 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.path.clip.winding.1
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#0f0';
+  ctx.fillRect(0, 0, 100, 50);
+
+  ctx.beginPath();
+  ctx.moveTo(-10, -10);
+  ctx.lineTo(110, -10);
+  ctx.lineTo(110, 60);
+  ctx.lineTo(-10, 60);
+  ctx.lineTo(-10, -10);
+  ctx.lineTo(0, 0);
+  ctx.lineTo(0, 50);
+  ctx.lineTo(100, 50);
+  ctx.lineTo(100, 0);
+  ctx.clip();
+
+  ctx.fillStyle = '#f00';
+  ctx.fillRect(0, 0, 100, 50);
+
+  _assertPixel(canvas, 50,25, 0,255,0,255);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.clip.winding.2.html b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.clip.winding.2.html
new file mode 100644
index 0000000000..eed064f84e
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.clip.winding.2.html
@@ -0,0 +1,49 @@
+
+
+OffscreenCanvas test: 2d.path.clip.winding.2
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.path.clip.winding.2
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.clip.winding.2.worker.js b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.clip.winding.2.worker.js
new file mode 100644
index 0000000000..5c9cac6bb6
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.clip.winding.2.worker.js
@@ -0,0 +1,44 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.path.clip.winding.2
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#f00';
+  ctx.fillRect(0, 0, 100, 50);
+
+  ctx.beginPath();
+  ctx.moveTo(-10, -10);
+  ctx.lineTo(110, -10);
+  ctx.lineTo(110, 60);
+  ctx.lineTo(-10, 60);
+  ctx.lineTo(-10, -10);
+  ctx.clip();
+
+  ctx.beginPath();
+  ctx.moveTo(0, 0);
+  ctx.lineTo(0, 50);
+  ctx.lineTo(100, 50);
+  ctx.lineTo(100, 0);
+  ctx.lineTo(0, 0);
+  ctx.clip();
+
+  ctx.fillStyle = '#0f0';
+  ctx.fillRect(0, 0, 100, 50);
+
+  _assertPixel(canvas, 50,25, 0,255,0,255);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.closePath.empty.html b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.closePath.empty.html
new file mode 100644
index 0000000000..c7596a8f1c
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.closePath.empty.html
@@ -0,0 +1,32 @@
+
+
+OffscreenCanvas test: 2d.path.closePath.empty
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.path.closePath.empty
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.closePath.empty.worker.js b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.closePath.empty.worker.js
new file mode 100644
index 0000000000..c9a4030e68
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.closePath.empty.worker.js
@@ -0,0 +1,27 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.path.closePath.empty
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#0f0';
+  ctx.fillRect(0, 0, 100, 50);
+  ctx.closePath();
+  ctx.fillStyle = '#f00';
+  ctx.fill();
+  _assertPixel(canvas, 50,25, 0,255,0,255);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.closePath.newline.html b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.closePath.newline.html
new file mode 100644
index 0000000000..771f3d3ca0
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.closePath.newline.html
@@ -0,0 +1,37 @@
+
+
+OffscreenCanvas test: 2d.path.closePath.newline
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.path.closePath.newline
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.closePath.newline.worker.js b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.closePath.newline.worker.js
new file mode 100644
index 0000000000..4dff932086
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.closePath.newline.worker.js
@@ -0,0 +1,32 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.path.closePath.newline
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#f00';
+  ctx.fillRect(0, 0, 100, 50);
+  ctx.strokeStyle = '#0f0';
+  ctx.lineWidth = 50;
+  ctx.moveTo(-100, 25);
+  ctx.lineTo(-100, -100);
+  ctx.lineTo(200, -100);
+  ctx.lineTo(200, 25);
+  ctx.closePath();
+  ctx.stroke();
+  _assertPixel(canvas, 50,25, 0,255,0,255);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.closePath.nextpoint.html b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.closePath.nextpoint.html
new file mode 100644
index 0000000000..3dffdeaf5b
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.closePath.nextpoint.html
@@ -0,0 +1,36 @@
+
+
+OffscreenCanvas test: 2d.path.closePath.nextpoint
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.path.closePath.nextpoint
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.closePath.nextpoint.worker.js b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.closePath.nextpoint.worker.js
new file mode 100644
index 0000000000..86d931b671
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.closePath.nextpoint.worker.js
@@ -0,0 +1,31 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.path.closePath.nextpoint
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#f00';
+  ctx.fillRect(0, 0, 100, 50);
+  ctx.strokeStyle = '#0f0';
+  ctx.lineWidth = 50;
+  ctx.moveTo(-100, 25);
+  ctx.lineTo(-100, -1000);
+  ctx.closePath();
+  ctx.lineTo(1000, 25);
+  ctx.stroke();
+  _assertPixel(canvas, 50,25, 0,255,0,255);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.ellipse.basics.html b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.ellipse.basics.html
new file mode 100644
index 0000000000..d664c45593
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.ellipse.basics.html
@@ -0,0 +1,33 @@
+
+
+OffscreenCanvas test: 2d.path.ellipse.basics
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.path.ellipse.basics
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Verify canvas throws error when drawing ellipse with negative radii.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.ellipse.basics.worker.js b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.ellipse.basics.worker.js
new file mode 100644
index 0000000000..60f3e9a673
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.ellipse.basics.worker.js
@@ -0,0 +1,28 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.path.ellipse.basics
+// Description:Verify canvas throws error when drawing ellipse with negative radii.
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("Verify canvas throws error when drawing ellipse with negative radii.");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.ellipse(10, 10, 10, 5, 0, 0, 1, false);
+  ctx.ellipse(10, 10, 10, 0, 0, 0, 1, false);
+  ctx.ellipse(10, 10, -0, 5, 0, 0, 1, false);
+  assert_throws_dom("INDEX_SIZE_ERR", function() { ctx.ellipse(10, 10, -2, 5, 0, 0, 1, false); });
+  assert_throws_dom("INDEX_SIZE_ERR", function() { ctx.ellipse(10, 10, 0, -1.5, 0, 0, 1, false); });
+  assert_throws_dom("INDEX_SIZE_ERR", function() { ctx.ellipse(10, 10, -2, -5, 0, 0, 1, false); });
+  ctx.ellipse(80, 0, 10, 4294967277, Math.PI / -84, -Math.PI / 2147483436, false);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.fill.closed.basic.html b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.fill.closed.basic.html
new file mode 100644
index 0000000000..6f8fd51de7
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.fill.closed.basic.html
@@ -0,0 +1,37 @@
+
+
+OffscreenCanvas test: 2d.path.fill.closed.basic
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.path.fill.closed.basic
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.fill.closed.basic.worker.js b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.fill.closed.basic.worker.js
new file mode 100644
index 0000000000..9dad73b579
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.fill.closed.basic.worker.js
@@ -0,0 +1,32 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.path.fill.closed.basic
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#f00';
+  ctx.fillRect(0, 0, 100, 50);
+
+  ctx.fillStyle = '#0f0';
+  ctx.moveTo(0, 0);
+  ctx.lineTo(100, 0);
+  ctx.lineTo(100, 50);
+  ctx.lineTo(0, 50);
+  ctx.fill();
+
+  _assertPixel(canvas, 50,25, 0,255,0,255);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.fill.closed.unaffected.html b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.fill.closed.unaffected.html
new file mode 100644
index 0000000000..706e38d176
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.fill.closed.unaffected.html
@@ -0,0 +1,40 @@
+
+
+OffscreenCanvas test: 2d.path.fill.closed.unaffected
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.path.fill.closed.unaffected
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.fill.closed.unaffected.worker.js b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.fill.closed.unaffected.worker.js
new file mode 100644
index 0000000000..b6d7982866
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.fill.closed.unaffected.worker.js
@@ -0,0 +1,35 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.path.fill.closed.unaffected
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#00f';
+  ctx.fillRect(0, 0, 100, 50);
+
+  ctx.moveTo(0, 0);
+  ctx.lineTo(100, 0);
+  ctx.lineTo(100, 50);
+  ctx.fillStyle = '#f00';
+  ctx.fill();
+  ctx.lineTo(0, 50);
+  ctx.fillStyle = '#0f0';
+  ctx.fill();
+
+  _assertPixel(canvas, 90,10, 0,255,0,255);
+  _assertPixel(canvas, 10,40, 0,255,0,255);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.fill.overlap.html b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.fill.overlap.html
new file mode 100644
index 0000000000..da936fab57
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.fill.overlap.html
@@ -0,0 +1,36 @@
+
+
+OffscreenCanvas test: 2d.path.fill.overlap
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.path.fill.overlap
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.fill.overlap.png b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.fill.overlap.png
new file mode 100644
index 0000000000..e2a35d48d4
Binary files /dev/null and b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.fill.overlap.png differ
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.fill.overlap.worker.js b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.fill.overlap.worker.js
new file mode 100644
index 0000000000..8f30cc7af2
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.fill.overlap.worker.js
@@ -0,0 +1,31 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.path.fill.overlap
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#000';
+  ctx.fillRect(0, 0, 100, 50);
+
+  ctx.fillStyle = 'rgba(0, 255, 0, 0.5)';
+  ctx.rect(0, 0, 100, 50);
+  ctx.closePath();
+  ctx.rect(10, 10, 80, 30);
+  ctx.fill();
+
+  _assertPixelApprox(canvas, 50,25, 0,127,0,255, 1);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.fill.winding.add.html b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.fill.winding.add.html
new file mode 100644
index 0000000000..40845a4a77
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.fill.winding.add.html
@@ -0,0 +1,42 @@
+
+
+OffscreenCanvas test: 2d.path.fill.winding.add
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.path.fill.winding.add
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.fill.winding.add.worker.js b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.fill.winding.add.worker.js
new file mode 100644
index 0000000000..cdbfc7f3a4
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.fill.winding.add.worker.js
@@ -0,0 +1,37 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.path.fill.winding.add
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#f00';
+  ctx.fillRect(0, 0, 100, 50);
+
+  ctx.fillStyle = '#0f0';
+  ctx.moveTo(-10, -10);
+  ctx.lineTo(110, -10);
+  ctx.lineTo(110, 60);
+  ctx.lineTo(-10, 60);
+  ctx.lineTo(-10, -10);
+  ctx.lineTo(0, 0);
+  ctx.lineTo(100, 0);
+  ctx.lineTo(100, 50);
+  ctx.lineTo(0, 50);
+  ctx.fill();
+
+  _assertPixel(canvas, 50,25, 0,255,0,255);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.fill.winding.subtract.1.html b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.fill.winding.subtract.1.html
new file mode 100644
index 0000000000..e0f9c838b1
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.fill.winding.subtract.1.html
@@ -0,0 +1,42 @@
+
+
+OffscreenCanvas test: 2d.path.fill.winding.subtract.1
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.path.fill.winding.subtract.1
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.fill.winding.subtract.1.worker.js b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.fill.winding.subtract.1.worker.js
new file mode 100644
index 0000000000..3d6a1660de
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.fill.winding.subtract.1.worker.js
@@ -0,0 +1,37 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.path.fill.winding.subtract.1
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#0f0';
+  ctx.fillRect(0, 0, 100, 50);
+
+  ctx.fillStyle = '#f00';
+  ctx.moveTo(-10, -10);
+  ctx.lineTo(110, -10);
+  ctx.lineTo(110, 60);
+  ctx.lineTo(-10, 60);
+  ctx.lineTo(-10, -10);
+  ctx.lineTo(0, 0);
+  ctx.lineTo(0, 50);
+  ctx.lineTo(100, 50);
+  ctx.lineTo(100, 0);
+  ctx.fill();
+
+  _assertPixel(canvas, 50,25, 0,255,0,255);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.fill.winding.subtract.2.html b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.fill.winding.subtract.2.html
new file mode 100644
index 0000000000..c7de03ae08
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.fill.winding.subtract.2.html
@@ -0,0 +1,41 @@
+
+
+OffscreenCanvas test: 2d.path.fill.winding.subtract.2
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.path.fill.winding.subtract.2
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.fill.winding.subtract.2.worker.js b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.fill.winding.subtract.2.worker.js
new file mode 100644
index 0000000000..0e8b4c79a5
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.fill.winding.subtract.2.worker.js
@@ -0,0 +1,36 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.path.fill.winding.subtract.2
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#0f0';
+  ctx.fillRect(0, 0, 100, 50);
+
+  ctx.fillStyle = '#f00';
+  ctx.moveTo(-10, -10);
+  ctx.lineTo(110, -10);
+  ctx.lineTo(110, 60);
+  ctx.lineTo(-10, 60);
+  ctx.moveTo(0, 0);
+  ctx.lineTo(0, 50);
+  ctx.lineTo(100, 50);
+  ctx.lineTo(100, 0);
+  ctx.fill();
+
+  _assertPixel(canvas, 50,25, 0,255,0,255);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.fill.winding.subtract.3.html b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.fill.winding.subtract.3.html
new file mode 100644
index 0000000000..3d12380357
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.fill.winding.subtract.3.html
@@ -0,0 +1,47 @@
+
+
+OffscreenCanvas test: 2d.path.fill.winding.subtract.3
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.path.fill.winding.subtract.3
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.fill.winding.subtract.3.worker.js b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.fill.winding.subtract.3.worker.js
new file mode 100644
index 0000000000..6c9f07c76a
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.fill.winding.subtract.3.worker.js
@@ -0,0 +1,42 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.path.fill.winding.subtract.3
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#f00';
+  ctx.fillRect(0, 0, 100, 50);
+
+  ctx.fillStyle = '#0f0';
+  ctx.moveTo(-10, -10);
+  ctx.lineTo(110, -10);
+  ctx.lineTo(110, 60);
+  ctx.lineTo(-10, 60);
+  ctx.lineTo(-10, -10);
+  ctx.lineTo(-20, -20);
+  ctx.lineTo(120, -20);
+  ctx.lineTo(120, 70);
+  ctx.lineTo(-20, 70);
+  ctx.lineTo(-20, -20);
+  ctx.lineTo(0, 0);
+  ctx.lineTo(0, 50);
+  ctx.lineTo(100, 50);
+  ctx.lineTo(100, 0);
+  ctx.fill();
+
+  _assertPixel(canvas, 50,25, 0,255,0,255);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.initial.html b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.initial.html
new file mode 100644
index 0000000000..e2e02f5142
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.initial.html
@@ -0,0 +1,32 @@
+
+
+OffscreenCanvas test: 2d.path.initial
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.path.initial
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.initial.worker.js b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.initial.worker.js
new file mode 100644
index 0000000000..de1a935032
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.initial.worker.js
@@ -0,0 +1,27 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.path.initial
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#0f0';
+  ctx.fillRect(0, 0, 100, 50);
+  ctx.closePath();
+  ctx.fillStyle = '#f00';
+  ctx.fill();
+  _assertPixel(canvas, 50,25, 0,255,0,255);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.isPointInPath.arc.html b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.isPointInPath.arc.html
new file mode 100644
index 0000000000..ccffcd7d76
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.isPointInPath.arc.html
@@ -0,0 +1,35 @@
+
+
+OffscreenCanvas test: 2d.path.isPointInPath.arc
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.path.isPointInPath.arc
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              isPointInPath() works on arcs
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.isPointInPath.arc.worker.js b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.isPointInPath.arc.worker.js
new file mode 100644
index 0000000000..13510b744f
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.isPointInPath.arc.worker.js
@@ -0,0 +1,30 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.path.isPointInPath.arc
+// Description:isPointInPath() works on arcs
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("isPointInPath() works on arcs");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.arc(50, 25, 10, 0, Math.PI, false);
+  _assertSame(ctx.isPointInPath(50, 10), false, "ctx.isPointInPath(50, 10)", "false");
+  _assertSame(ctx.isPointInPath(50, 20), false, "ctx.isPointInPath(50, 20)", "false");
+  _assertSame(ctx.isPointInPath(50, 30), true, "ctx.isPointInPath(50, 30)", "true");
+  _assertSame(ctx.isPointInPath(50, 40), false, "ctx.isPointInPath(50, 40)", "false");
+  _assertSame(ctx.isPointInPath(30, 20), false, "ctx.isPointInPath(30, 20)", "false");
+  _assertSame(ctx.isPointInPath(70, 20), false, "ctx.isPointInPath(70, 20)", "false");
+  _assertSame(ctx.isPointInPath(30, 30), false, "ctx.isPointInPath(30, 30)", "false");
+  _assertSame(ctx.isPointInPath(70, 30), false, "ctx.isPointInPath(70, 30)", "false");
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.isPointInPath.basic.1.html b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.isPointInPath.basic.1.html
new file mode 100644
index 0000000000..7b9673a812
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.isPointInPath.basic.1.html
@@ -0,0 +1,29 @@
+
+
+OffscreenCanvas test: 2d.path.isPointInPath.basic.1
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.path.isPointInPath.basic.1
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              isPointInPath() detects whether the point is inside the path
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.isPointInPath.basic.1.worker.js b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.isPointInPath.basic.1.worker.js
new file mode 100644
index 0000000000..f51900ea6b
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.isPointInPath.basic.1.worker.js
@@ -0,0 +1,24 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.path.isPointInPath.basic.1
+// Description:isPointInPath() detects whether the point is inside the path
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("isPointInPath() detects whether the point is inside the path");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.rect(0, 0, 20, 20);
+  _assertSame(ctx.isPointInPath(10, 10), true, "ctx.isPointInPath(10, 10)", "true");
+  _assertSame(ctx.isPointInPath(30, 10), false, "ctx.isPointInPath(30, 10)", "false");
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.isPointInPath.basic.2.html b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.isPointInPath.basic.2.html
new file mode 100644
index 0000000000..3710dd185d
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.isPointInPath.basic.2.html
@@ -0,0 +1,29 @@
+
+
+OffscreenCanvas test: 2d.path.isPointInPath.basic.2
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.path.isPointInPath.basic.2
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              isPointInPath() detects whether the point is inside the path
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.isPointInPath.basic.2.worker.js b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.isPointInPath.basic.2.worker.js
new file mode 100644
index 0000000000..6024a0dc39
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.isPointInPath.basic.2.worker.js
@@ -0,0 +1,24 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.path.isPointInPath.basic.2
+// Description:isPointInPath() detects whether the point is inside the path
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("isPointInPath() detects whether the point is inside the path");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.rect(20, 0, 20, 20);
+  _assertSame(ctx.isPointInPath(10, 10), false, "ctx.isPointInPath(10, 10)", "false");
+  _assertSame(ctx.isPointInPath(30, 10), true, "ctx.isPointInPath(30, 10)", "true");
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.isPointInPath.basic.html b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.isPointInPath.basic.html
new file mode 100644
index 0000000000..21cf448de2
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.isPointInPath.basic.html
@@ -0,0 +1,66 @@
+
+
+OffscreenCanvas test: 2d.path.isPointInPath.basic
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.path.isPointInPath.basic
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Verify the winding rule in isPointInPath works for for rect path.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.isPointInPath.basic.worker.js b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.isPointInPath.basic.worker.js
new file mode 100644
index 0000000000..3e2a95c15e
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.isPointInPath.basic.worker.js
@@ -0,0 +1,61 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.path.isPointInPath.basic
+// Description:Verify the winding rule in isPointInPath works for for rect path.
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("Verify the winding rule in isPointInPath works for for rect path.");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  canvas.width = 200;
+  canvas.height = 200;
+
+  // Testing default isPointInPath
+  ctx.beginPath();
+  ctx.rect(0, 0, 100, 100);
+  ctx.rect(25, 25, 50, 50);
+  _assertSame(ctx.isPointInPath(50, 50), true, "ctx.isPointInPath(50, 50)", "true");
+  _assertSame(ctx.isPointInPath(NaN, 50), false, "ctx.isPointInPath(NaN, 50)", "false");
+  _assertSame(ctx.isPointInPath(50, NaN), false, "ctx.isPointInPath(50, NaN)", "false");
+
+  // Testing nonzero isPointInPath
+  ctx.beginPath();
+  ctx.rect(0, 0, 100, 100);
+  ctx.rect(25, 25, 50, 50);
+  _assertSame(ctx.isPointInPath(50, 50, 'nonzero'), true, "ctx.isPointInPath(50, 50, 'nonzero')", "true");
+
+  // Testing evenodd isPointInPath
+  ctx.beginPath();
+  ctx.rect(0, 0, 100, 100);
+  ctx.rect(25, 25, 50, 50);
+  _assertSame(ctx.isPointInPath(50, 50, 'evenodd'), false, "ctx.isPointInPath(50, 50, 'evenodd')", "false");
+
+  // Testing extremely large scale
+  ctx.save();
+  ctx.scale(Number.MAX_VALUE, Number.MAX_VALUE);
+  ctx.beginPath();
+  ctx.rect(-10, -10, 20, 20);
+  _assertSame(ctx.isPointInPath(0, 0, 'nonzero'), true, "ctx.isPointInPath(0, 0, 'nonzero')", "true");
+  _assertSame(ctx.isPointInPath(0, 0, 'evenodd'), true, "ctx.isPointInPath(0, 0, 'evenodd')", "true");
+  ctx.restore();
+
+  // Check with non-invertible ctm.
+  ctx.save();
+  ctx.scale(0, 0);
+  ctx.beginPath();
+  ctx.rect(-10, -10, 20, 20);
+  _assertSame(ctx.isPointInPath(0, 0, 'nonzero'), false, "ctx.isPointInPath(0, 0, 'nonzero')", "false");
+  _assertSame(ctx.isPointInPath(0, 0, 'evenodd'), false, "ctx.isPointInPath(0, 0, 'evenodd')", "false");
+  ctx.restore();
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.isPointInPath.bezier.html b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.isPointInPath.bezier.html
new file mode 100644
index 0000000000..d348110305
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.isPointInPath.bezier.html
@@ -0,0 +1,48 @@
+
+
+OffscreenCanvas test: 2d.path.isPointInPath.bezier
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.path.isPointInPath.bezier
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              isPointInPath() works on Bezier curves
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.isPointInPath.bezier.worker.js b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.isPointInPath.bezier.worker.js
new file mode 100644
index 0000000000..894fe5da31
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.isPointInPath.bezier.worker.js
@@ -0,0 +1,43 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.path.isPointInPath.bezier
+// Description:isPointInPath() works on Bezier curves
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("isPointInPath() works on Bezier curves");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.moveTo(25, 25);
+  ctx.bezierCurveTo(50, -50, 50, 100, 75, 25);
+  _assertSame(ctx.isPointInPath(25, 20), false, "ctx.isPointInPath(25, 20)", "false");
+  _assertSame(ctx.isPointInPath(25, 30), false, "ctx.isPointInPath(25, 30)", "false");
+  _assertSame(ctx.isPointInPath(30, 20), true, "ctx.isPointInPath(30, 20)", "true");
+  _assertSame(ctx.isPointInPath(30, 30), false, "ctx.isPointInPath(30, 30)", "false");
+  _assertSame(ctx.isPointInPath(40, 2), false, "ctx.isPointInPath(40, 2)", "false");
+  _assertSame(ctx.isPointInPath(40, 20), true, "ctx.isPointInPath(40, 20)", "true");
+  _assertSame(ctx.isPointInPath(40, 30), false, "ctx.isPointInPath(40, 30)", "false");
+  _assertSame(ctx.isPointInPath(40, 47), false, "ctx.isPointInPath(40, 47)", "false");
+  _assertSame(ctx.isPointInPath(45, 20), true, "ctx.isPointInPath(45, 20)", "true");
+  _assertSame(ctx.isPointInPath(45, 30), false, "ctx.isPointInPath(45, 30)", "false");
+  _assertSame(ctx.isPointInPath(55, 20), false, "ctx.isPointInPath(55, 20)", "false");
+  _assertSame(ctx.isPointInPath(55, 30), true, "ctx.isPointInPath(55, 30)", "true");
+  _assertSame(ctx.isPointInPath(60, 2), false, "ctx.isPointInPath(60, 2)", "false");
+  _assertSame(ctx.isPointInPath(60, 20), false, "ctx.isPointInPath(60, 20)", "false");
+  _assertSame(ctx.isPointInPath(60, 30), true, "ctx.isPointInPath(60, 30)", "true");
+  _assertSame(ctx.isPointInPath(60, 47), false, "ctx.isPointInPath(60, 47)", "false");
+  _assertSame(ctx.isPointInPath(70, 20), false, "ctx.isPointInPath(70, 20)", "false");
+  _assertSame(ctx.isPointInPath(70, 30), true, "ctx.isPointInPath(70, 30)", "true");
+  _assertSame(ctx.isPointInPath(75, 20), false, "ctx.isPointInPath(75, 20)", "false");
+  _assertSame(ctx.isPointInPath(75, 30), false, "ctx.isPointInPath(75, 30)", "false");
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.isPointInPath.bigarc.html b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.isPointInPath.bigarc.html
new file mode 100644
index 0000000000..fcb4ca8827
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.isPointInPath.bigarc.html
@@ -0,0 +1,35 @@
+
+
+OffscreenCanvas test: 2d.path.isPointInPath.bigarc
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.path.isPointInPath.bigarc
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              isPointInPath() works on unclosed arcs larger than 2pi
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.isPointInPath.bigarc.worker.js b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.isPointInPath.bigarc.worker.js
new file mode 100644
index 0000000000..40233790c8
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.isPointInPath.bigarc.worker.js
@@ -0,0 +1,30 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.path.isPointInPath.bigarc
+// Description:isPointInPath() works on unclosed arcs larger than 2pi
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("isPointInPath() works on unclosed arcs larger than 2pi");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.arc(50, 25, 10, 0, 7, false);
+  _assertSame(ctx.isPointInPath(50, 10), false, "ctx.isPointInPath(50, 10)", "false");
+  _assertSame(ctx.isPointInPath(50, 20), true, "ctx.isPointInPath(50, 20)", "true");
+  _assertSame(ctx.isPointInPath(50, 30), true, "ctx.isPointInPath(50, 30)", "true");
+  _assertSame(ctx.isPointInPath(50, 40), false, "ctx.isPointInPath(50, 40)", "false");
+  _assertSame(ctx.isPointInPath(30, 20), false, "ctx.isPointInPath(30, 20)", "false");
+  _assertSame(ctx.isPointInPath(70, 20), false, "ctx.isPointInPath(70, 20)", "false");
+  _assertSame(ctx.isPointInPath(30, 30), false, "ctx.isPointInPath(30, 30)", "false");
+  _assertSame(ctx.isPointInPath(70, 30), false, "ctx.isPointInPath(70, 30)", "false");
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.isPointInPath.edge.html b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.isPointInPath.edge.html
new file mode 100644
index 0000000000..aa367b4e56
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.isPointInPath.edge.html
@@ -0,0 +1,39 @@
+
+
+OffscreenCanvas test: 2d.path.isPointInPath.edge
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.path.isPointInPath.edge
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              isPointInPath() counts points on the path as being inside
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.isPointInPath.edge.worker.js b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.isPointInPath.edge.worker.js
new file mode 100644
index 0000000000..3918a6fe83
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.isPointInPath.edge.worker.js
@@ -0,0 +1,34 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.path.isPointInPath.edge
+// Description:isPointInPath() counts points on the path as being inside
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("isPointInPath() counts points on the path as being inside");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.rect(0, 0, 20, 20);
+  _assertSame(ctx.isPointInPath(0, 0), true, "ctx.isPointInPath(0, 0)", "true");
+  _assertSame(ctx.isPointInPath(10, 0), true, "ctx.isPointInPath(10, 0)", "true");
+  _assertSame(ctx.isPointInPath(20, 0), true, "ctx.isPointInPath(20, 0)", "true");
+  _assertSame(ctx.isPointInPath(20, 10), true, "ctx.isPointInPath(20, 10)", "true");
+  _assertSame(ctx.isPointInPath(20, 20), true, "ctx.isPointInPath(20, 20)", "true");
+  _assertSame(ctx.isPointInPath(10, 20), true, "ctx.isPointInPath(10, 20)", "true");
+  _assertSame(ctx.isPointInPath(0, 20), true, "ctx.isPointInPath(0, 20)", "true");
+  _assertSame(ctx.isPointInPath(0, 10), true, "ctx.isPointInPath(0, 10)", "true");
+  _assertSame(ctx.isPointInPath(10, -0.01), false, "ctx.isPointInPath(10, -0.01)", "false");
+  _assertSame(ctx.isPointInPath(10, 20.01), false, "ctx.isPointInPath(10, 20.01)", "false");
+  _assertSame(ctx.isPointInPath(-0.01, 10), false, "ctx.isPointInPath(-0.01, 10)", "false");
+  _assertSame(ctx.isPointInPath(20.01, 10), false, "ctx.isPointInPath(20.01, 10)", "false");
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.isPointInPath.empty.html b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.isPointInPath.empty.html
new file mode 100644
index 0000000000..d2ebf1e7e1
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.isPointInPath.empty.html
@@ -0,0 +1,27 @@
+
+
+OffscreenCanvas test: 2d.path.isPointInPath.empty
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.path.isPointInPath.empty
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              isPointInPath() works when there is no path
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.isPointInPath.empty.worker.js b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.isPointInPath.empty.worker.js
new file mode 100644
index 0000000000..319836dcb5
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.isPointInPath.empty.worker.js
@@ -0,0 +1,22 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.path.isPointInPath.empty
+// Description:isPointInPath() works when there is no path
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("isPointInPath() works when there is no path");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  _assertSame(ctx.isPointInPath(0, 0), false, "ctx.isPointInPath(0, 0)", "false");
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.isPointInPath.nonfinite.html b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.isPointInPath.nonfinite.html
new file mode 100644
index 0000000000..ef12d057ed
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.isPointInPath.nonfinite.html
@@ -0,0 +1,34 @@
+
+
+OffscreenCanvas test: 2d.path.isPointInPath.nonfinite
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.path.isPointInPath.nonfinite
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              isPointInPath() returns false for non-finite arguments
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.isPointInPath.nonfinite.worker.js b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.isPointInPath.nonfinite.worker.js
new file mode 100644
index 0000000000..dfa6eec766
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.isPointInPath.nonfinite.worker.js
@@ -0,0 +1,29 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.path.isPointInPath.nonfinite
+// Description:isPointInPath() returns false for non-finite arguments
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("isPointInPath() returns false for non-finite arguments");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.rect(-100, -50, 200, 100);
+  _assertSame(ctx.isPointInPath(Infinity, 0), false, "ctx.isPointInPath(Infinity, 0)", "false");
+  _assertSame(ctx.isPointInPath(-Infinity, 0), false, "ctx.isPointInPath(-Infinity, 0)", "false");
+  _assertSame(ctx.isPointInPath(NaN, 0), false, "ctx.isPointInPath(NaN, 0)", "false");
+  _assertSame(ctx.isPointInPath(0, Infinity), false, "ctx.isPointInPath(0, Infinity)", "false");
+  _assertSame(ctx.isPointInPath(0, -Infinity), false, "ctx.isPointInPath(0, -Infinity)", "false");
+  _assertSame(ctx.isPointInPath(0, NaN), false, "ctx.isPointInPath(0, NaN)", "false");
+  _assertSame(ctx.isPointInPath(NaN, NaN), false, "ctx.isPointInPath(NaN, NaN)", "false");
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.isPointInPath.outside.html b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.isPointInPath.outside.html
new file mode 100644
index 0000000000..ce2ab819dd
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.isPointInPath.outside.html
@@ -0,0 +1,34 @@
+
+
+OffscreenCanvas test: 2d.path.isPointInPath.outside
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.path.isPointInPath.outside
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              isPointInPath() works on paths outside the canvas
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.isPointInPath.outside.worker.js b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.isPointInPath.outside.worker.js
new file mode 100644
index 0000000000..d4db12ef37
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.isPointInPath.outside.worker.js
@@ -0,0 +1,29 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.path.isPointInPath.outside
+// Description:isPointInPath() works on paths outside the canvas
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("isPointInPath() works on paths outside the canvas");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.rect(0, -100, 20, 20);
+  ctx.rect(20, -10, 20, 20);
+  _assertSame(ctx.isPointInPath(10, -110), false, "ctx.isPointInPath(10, -110)", "false");
+  _assertSame(ctx.isPointInPath(10, -90), true, "ctx.isPointInPath(10, -90)", "true");
+  _assertSame(ctx.isPointInPath(10, -70), false, "ctx.isPointInPath(10, -70)", "false");
+  _assertSame(ctx.isPointInPath(30, -20), false, "ctx.isPointInPath(30, -20)", "false");
+  _assertSame(ctx.isPointInPath(30, 0), true, "ctx.isPointInPath(30, 0)", "true");
+  _assertSame(ctx.isPointInPath(30, 20), false, "ctx.isPointInPath(30, 20)", "false");
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.isPointInPath.subpath.html b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.isPointInPath.subpath.html
new file mode 100644
index 0000000000..c4abd92764
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.isPointInPath.subpath.html
@@ -0,0 +1,34 @@
+
+
+OffscreenCanvas test: 2d.path.isPointInPath.subpath
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.path.isPointInPath.subpath
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              isPointInPath() uses the current path, not just the subpath
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.isPointInPath.subpath.worker.js b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.isPointInPath.subpath.worker.js
new file mode 100644
index 0000000000..82df3b7c70
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.isPointInPath.subpath.worker.js
@@ -0,0 +1,29 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.path.isPointInPath.subpath
+// Description:isPointInPath() uses the current path, not just the subpath
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("isPointInPath() uses the current path, not just the subpath");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.rect(0, 0, 20, 20);
+  ctx.beginPath();
+  ctx.rect(20, 0, 20, 20);
+  ctx.closePath();
+  ctx.rect(40, 0, 20, 20);
+  _assertSame(ctx.isPointInPath(10, 10), false, "ctx.isPointInPath(10, 10)", "false");
+  _assertSame(ctx.isPointInPath(30, 10), true, "ctx.isPointInPath(30, 10)", "true");
+  _assertSame(ctx.isPointInPath(50, 10), true, "ctx.isPointInPath(50, 10)", "true");
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.isPointInPath.transform.1.html b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.isPointInPath.transform.1.html
new file mode 100644
index 0000000000..bccaa842e5
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.isPointInPath.transform.1.html
@@ -0,0 +1,34 @@
+
+
+OffscreenCanvas test: 2d.path.isPointInPath.transform.1
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.path.isPointInPath.transform.1
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              isPointInPath() handles transformations correctly
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.isPointInPath.transform.1.worker.js b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.isPointInPath.transform.1.worker.js
new file mode 100644
index 0000000000..0774fd0d62
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.isPointInPath.transform.1.worker.js
@@ -0,0 +1,29 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.path.isPointInPath.transform.1
+// Description:isPointInPath() handles transformations correctly
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("isPointInPath() handles transformations correctly");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.translate(50, 0);
+  ctx.rect(0, 0, 20, 20);
+  _assertSame(ctx.isPointInPath(-40, 10), false, "ctx.isPointInPath(-40, 10)", "false");
+  _assertSame(ctx.isPointInPath(10, 10), false, "ctx.isPointInPath(10, 10)", "false");
+  _assertSame(ctx.isPointInPath(49, 10), false, "ctx.isPointInPath(49, 10)", "false");
+  _assertSame(ctx.isPointInPath(51, 10), true, "ctx.isPointInPath(51, 10)", "true");
+  _assertSame(ctx.isPointInPath(69, 10), true, "ctx.isPointInPath(69, 10)", "true");
+  _assertSame(ctx.isPointInPath(71, 10), false, "ctx.isPointInPath(71, 10)", "false");
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.isPointInPath.transform.2.html b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.isPointInPath.transform.2.html
new file mode 100644
index 0000000000..1e587c1d8a
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.isPointInPath.transform.2.html
@@ -0,0 +1,34 @@
+
+
+OffscreenCanvas test: 2d.path.isPointInPath.transform.2
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.path.isPointInPath.transform.2
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              isPointInPath() handles transformations correctly
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.isPointInPath.transform.2.worker.js b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.isPointInPath.transform.2.worker.js
new file mode 100644
index 0000000000..ff4c42c450
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.isPointInPath.transform.2.worker.js
@@ -0,0 +1,29 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.path.isPointInPath.transform.2
+// Description:isPointInPath() handles transformations correctly
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("isPointInPath() handles transformations correctly");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.rect(50, 0, 20, 20);
+  ctx.translate(50, 0);
+  _assertSame(ctx.isPointInPath(-40, 10), false, "ctx.isPointInPath(-40, 10)", "false");
+  _assertSame(ctx.isPointInPath(10, 10), false, "ctx.isPointInPath(10, 10)", "false");
+  _assertSame(ctx.isPointInPath(49, 10), false, "ctx.isPointInPath(49, 10)", "false");
+  _assertSame(ctx.isPointInPath(51, 10), true, "ctx.isPointInPath(51, 10)", "true");
+  _assertSame(ctx.isPointInPath(69, 10), true, "ctx.isPointInPath(69, 10)", "true");
+  _assertSame(ctx.isPointInPath(71, 10), false, "ctx.isPointInPath(71, 10)", "false");
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.isPointInPath.transform.3.html b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.isPointInPath.transform.3.html
new file mode 100644
index 0000000000..826d7e23c9
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.isPointInPath.transform.3.html
@@ -0,0 +1,34 @@
+
+
+OffscreenCanvas test: 2d.path.isPointInPath.transform.3
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.path.isPointInPath.transform.3
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              isPointInPath() handles transformations correctly
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.isPointInPath.transform.3.worker.js b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.isPointInPath.transform.3.worker.js
new file mode 100644
index 0000000000..f6750e9109
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.isPointInPath.transform.3.worker.js
@@ -0,0 +1,29 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.path.isPointInPath.transform.3
+// Description:isPointInPath() handles transformations correctly
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("isPointInPath() handles transformations correctly");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.scale(-1, 1);
+  ctx.rect(-70, 0, 20, 20);
+  _assertSame(ctx.isPointInPath(-40, 10), false, "ctx.isPointInPath(-40, 10)", "false");
+  _assertSame(ctx.isPointInPath(10, 10), false, "ctx.isPointInPath(10, 10)", "false");
+  _assertSame(ctx.isPointInPath(49, 10), false, "ctx.isPointInPath(49, 10)", "false");
+  _assertSame(ctx.isPointInPath(51, 10), true, "ctx.isPointInPath(51, 10)", "true");
+  _assertSame(ctx.isPointInPath(69, 10), true, "ctx.isPointInPath(69, 10)", "true");
+  _assertSame(ctx.isPointInPath(71, 10), false, "ctx.isPointInPath(71, 10)", "false");
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.isPointInPath.transform.4.html b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.isPointInPath.transform.4.html
new file mode 100644
index 0000000000..97792d6889
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.isPointInPath.transform.4.html
@@ -0,0 +1,32 @@
+
+
+OffscreenCanvas test: 2d.path.isPointInPath.transform.4
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.path.isPointInPath.transform.4
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              isPointInPath() handles transformations correctly
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.isPointInPath.transform.4.worker.js b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.isPointInPath.transform.4.worker.js
new file mode 100644
index 0000000000..f43a8a3d1e
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.isPointInPath.transform.4.worker.js
@@ -0,0 +1,27 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.path.isPointInPath.transform.4
+// Description:isPointInPath() handles transformations correctly
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("isPointInPath() handles transformations correctly");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.translate(50, 0);
+  ctx.rect(50, 0, 20, 20);
+  ctx.translate(0, 50);
+  _assertSame(ctx.isPointInPath(60, 10), false, "ctx.isPointInPath(60, 10)", "false");
+  _assertSame(ctx.isPointInPath(110, 10), true, "ctx.isPointInPath(110, 10)", "true");
+  _assertSame(ctx.isPointInPath(110, 60), false, "ctx.isPointInPath(110, 60)", "false");
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.isPointInPath.unclosed.html b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.isPointInPath.unclosed.html
new file mode 100644
index 0000000000..3920c7de4b
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.isPointInPath.unclosed.html
@@ -0,0 +1,32 @@
+
+
+OffscreenCanvas test: 2d.path.isPointInPath.unclosed
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.path.isPointInPath.unclosed
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              isPointInPath() works on unclosed subpaths
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.isPointInPath.unclosed.worker.js b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.isPointInPath.unclosed.worker.js
new file mode 100644
index 0000000000..7b5ffc4a79
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.isPointInPath.unclosed.worker.js
@@ -0,0 +1,27 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.path.isPointInPath.unclosed
+// Description:isPointInPath() works on unclosed subpaths
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("isPointInPath() works on unclosed subpaths");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.moveTo(0, 0);
+  ctx.lineTo(20, 0);
+  ctx.lineTo(20, 20);
+  ctx.lineTo(0, 20);
+  _assertSame(ctx.isPointInPath(10, 10), true, "ctx.isPointInPath(10, 10)", "true");
+  _assertSame(ctx.isPointInPath(30, 10), false, "ctx.isPointInPath(30, 10)", "false");
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.isPointInPath.winding.html b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.isPointInPath.winding.html
new file mode 100644
index 0000000000..b2741a5069
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.isPointInPath.winding.html
@@ -0,0 +1,47 @@
+
+
+OffscreenCanvas test: 2d.path.isPointInPath.winding
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.path.isPointInPath.winding
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              isPointInPath() uses the non-zero winding number rule
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.isPointInPath.winding.worker.js b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.isPointInPath.winding.worker.js
new file mode 100644
index 0000000000..094bc05910
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.isPointInPath.winding.worker.js
@@ -0,0 +1,42 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.path.isPointInPath.winding
+// Description:isPointInPath() uses the non-zero winding number rule
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("isPointInPath() uses the non-zero winding number rule");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  // Create a square ring, using opposite windings to make a hole in the centre
+  ctx.moveTo(0, 0);
+  ctx.lineTo(50, 0);
+  ctx.lineTo(50, 50);
+  ctx.lineTo(0, 50);
+  ctx.lineTo(0, 0);
+  ctx.lineTo(10, 10);
+  ctx.lineTo(10, 40);
+  ctx.lineTo(40, 40);
+  ctx.lineTo(40, 10);
+  ctx.lineTo(10, 10);
+
+  _assertSame(ctx.isPointInPath(5, 5), true, "ctx.isPointInPath(5, 5)", "true");
+  _assertSame(ctx.isPointInPath(25, 5), true, "ctx.isPointInPath(25, 5)", "true");
+  _assertSame(ctx.isPointInPath(45, 5), true, "ctx.isPointInPath(45, 5)", "true");
+  _assertSame(ctx.isPointInPath(5, 25), true, "ctx.isPointInPath(5, 25)", "true");
+  _assertSame(ctx.isPointInPath(25, 25), false, "ctx.isPointInPath(25, 25)", "false");
+  _assertSame(ctx.isPointInPath(45, 25), true, "ctx.isPointInPath(45, 25)", "true");
+  _assertSame(ctx.isPointInPath(5, 45), true, "ctx.isPointInPath(5, 45)", "true");
+  _assertSame(ctx.isPointInPath(25, 45), true, "ctx.isPointInPath(25, 45)", "true");
+  _assertSame(ctx.isPointInPath(45, 45), true, "ctx.isPointInPath(45, 45)", "true");
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.isPointInStroke.basic.html b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.isPointInStroke.basic.html
new file mode 100644
index 0000000000..95f7fd721d
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.isPointInStroke.basic.html
@@ -0,0 +1,36 @@
+
+
+OffscreenCanvas test: 2d.path.isPointInStroke.basic
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.path.isPointInStroke.basic
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              detects whether point is in the area contained by the stroke of the path
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.isPointInStroke.basic.worker.js b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.isPointInStroke.basic.worker.js
new file mode 100644
index 0000000000..844f0ef154
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.isPointInStroke.basic.worker.js
@@ -0,0 +1,32 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.path.isPointInStroke.basic
+// Description:detects whether point is in the area contained by the stroke of the path
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("detects whether point is in the area contained by the stroke of the path");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+ctx.strokeStyle = '#0f0';
+ctx.beginPath();
+ctx.rect(0, 0, 20, 20);
+_assertSame(ctx.isPointInStroke(0, 0), true, "ctx.isPointInStroke(0, 0)", "true");
+_assertSame(ctx.isPointInStroke(30, 10), false, "ctx.isPointInStroke(30, 10)", "false");
+
+var path = new Path2D();
+path.rect(20, 20, 100, 100);
+_assertSame(ctx.isPointInStroke(path, 20, 20), true, "ctx.isPointInStroke(path, 20, 20)", "true");
+_assertSame(ctx.isPointInStroke(path, 120, 20), true, "ctx.isPointInStroke(path, 120, 20)", "true");
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.isPointInStroke.scaleddashes.html b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.isPointInStroke.scaleddashes.html
new file mode 100644
index 0000000000..1ed13b32de
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.isPointInStroke.scaleddashes.html
@@ -0,0 +1,40 @@
+
+
+OffscreenCanvas test: 2d.path.isPointInStroke.scaleddashes
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.path.isPointInStroke.scaleddashes
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              isPointInStroke() should return correct results on dashed paths at high scale factors
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.isPointInStroke.scaleddashes.worker.js b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.isPointInStroke.scaleddashes.worker.js
new file mode 100644
index 0000000000..240905308e
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.isPointInStroke.scaleddashes.worker.js
@@ -0,0 +1,35 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.path.isPointInStroke.scaleddashes
+// Description:isPointInStroke() should return correct results on dashed paths at high scale factors
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("isPointInStroke() should return correct results on dashed paths at high scale factors");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  var scale = 20;
+  ctx.setLineDash([10, 21.4159]); // dash from t=0 to t=10 along the circle
+  ctx.scale(scale, scale);
+  ctx.ellipse(6, 10, 5, 5, 0, 2*Math.PI, false);
+  ctx.stroke();
+
+  // hit-test the beginning of the dash (t=0)
+  _assertSame(ctx.isPointInStroke(11*scale, 10*scale), true, "ctx.isPointInStroke(11*scale, 10*scale)", "true");
+  // hit-test the middle of the dash (t=5)
+  _assertSame(ctx.isPointInStroke(8.70*scale, 14.21*scale), true, "ctx.isPointInStroke(8.70*scale, 14.21*scale)", "true");
+  // hit-test the end of the dash (t=9.8)
+  _assertSame(ctx.isPointInStroke(4.10*scale, 14.63*scale), true, "ctx.isPointInStroke(4.10*scale, 14.63*scale)", "true");
+  // hit-test past the end of the dash (t=10.2)
+  _assertSame(ctx.isPointInStroke(3.74*scale, 14.46*scale), false, "ctx.isPointInStroke(3.74*scale, 14.46*scale)", "false");
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.isPointInpath.invalid.html b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.isPointInpath.invalid.html
new file mode 100644
index 0000000000..0b4c635fc8
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.isPointInpath.invalid.html
@@ -0,0 +1,51 @@
+
+
+OffscreenCanvas test: 2d.path.isPointInpath.invalid
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.path.isPointInpath.invalid
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Verify isPointInPath throws exceptions with invalid inputs.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.isPointInpath.invalid.worker.js b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.isPointInpath.invalid.worker.js
new file mode 100644
index 0000000000..f09eeb7526
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.isPointInpath.invalid.worker.js
@@ -0,0 +1,46 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.path.isPointInpath.invalid
+// Description:Verify isPointInPath throws exceptions with invalid inputs.
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("Verify isPointInPath throws exceptions with invalid inputs.");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  canvas.width = 200;
+  canvas.height = 200;
+  path = new Path2D();
+  path.rect(0, 0, 100, 100);
+  path.rect(25, 25, 50, 50);
+  // Testing invalid enumeration isPointInPath (w/ and w/o Path object');
+  assert_throws_js(TypeError, function() { ctx.isPointInPath(path, 50, 50, 'gazonk'); });
+  assert_throws_js(TypeError, function() { ctx.isPointInPath(50, 50, 'gazonk'); });
+
+  // Testing invalid type isPointInPath with Path object');
+  assert_throws_js(TypeError, function() { ctx.isPointInPath(null, 50, 50); });
+  assert_throws_js(TypeError, function() { ctx.isPointInPath(null, 50, 50, 'nonzero'); });
+  assert_throws_js(TypeError, function() { ctx.isPointInPath(null, 50, 50, 'evenodd'); });
+  assert_throws_js(TypeError, function() { ctx.isPointInPath(null, 50, 50, null); });
+  assert_throws_js(TypeError, function() { ctx.isPointInPath(path, 50, 50, null); });
+  assert_throws_js(TypeError, function() { ctx.isPointInPath(undefined, 50, 50); });
+  assert_throws_js(TypeError, function() { ctx.isPointInPath(undefined, 50, 50, 'nonzero'); });
+  assert_throws_js(TypeError, function() { ctx.isPointInPath(undefined, 50, 50, 'evenodd'); });
+  assert_throws_js(TypeError, function() { ctx.isPointInPath(undefined, 50, 50, undefined); });
+  assert_throws_js(TypeError, function() { ctx.isPointInPath([], 50, 50); });
+  assert_throws_js(TypeError, function() { ctx.isPointInPath([], 50, 50, 'nonzero'); });
+  assert_throws_js(TypeError, function() { ctx.isPointInPath([], 50, 50, 'evenodd'); });
+  assert_throws_js(TypeError, function() { ctx.isPointInPath({}, 50, 50); });
+  assert_throws_js(TypeError, function() { ctx.isPointInPath({}, 50, 50, 'nonzero'); });
+  assert_throws_js(TypeError, function() { ctx.isPointInPath({}, 50, 50, 'evenodd'); });
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.isPointInpath.multi.path.html b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.isPointInpath.multi.path.html
new file mode 100644
index 0000000000..945855231b
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.isPointInpath.multi.path.html
@@ -0,0 +1,49 @@
+
+
+OffscreenCanvas test: 2d.path.isPointInpath.multi.path
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.path.isPointInpath.multi.path
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Verify the winding rule in isPointInPath works for path object.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.isPointInpath.multi.path.worker.js b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.isPointInpath.multi.path.worker.js
new file mode 100644
index 0000000000..d3d4e60747
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.isPointInpath.multi.path.worker.js
@@ -0,0 +1,44 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.path.isPointInpath.multi.path
+// Description:Verify the winding rule in isPointInPath works for path object.
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("Verify the winding rule in isPointInPath works for path object.");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  canvas.width = 200;
+  canvas.height = 200;
+
+  // Testing default isPointInPath with Path object');
+  path = new Path2D();
+  path.rect(0, 0, 100, 100);
+  path.rect(25, 25, 50, 50);
+  _assertSame(ctx.isPointInPath(path, 50, 50), true, "ctx.isPointInPath(path, 50, 50)", "true");
+  _assertSame(ctx.isPointInPath(path, 50, 50, undefined), true, "ctx.isPointInPath(path, 50, 50, undefined)", "true");
+  _assertSame(ctx.isPointInPath(path, NaN, 50), false, "ctx.isPointInPath(path, NaN, 50)", "false");
+  _assertSame(ctx.isPointInPath(path, 50, NaN), false, "ctx.isPointInPath(path, 50, NaN)", "false");
+
+  // Testing nonzero isPointInPath with Path object');
+  path = new Path2D();
+  path.rect(0, 0, 100, 100);
+  path.rect(25, 25, 50, 50);
+  _assertSame(ctx.isPointInPath(path, 50, 50, 'nonzero'), true, "ctx.isPointInPath(path, 50, 50, 'nonzero')", "true");
+
+  // Testing evenodd isPointInPath with Path object');
+  path = new Path2D();
+  path.rect(0, 0, 100, 100);
+  path.rect(25, 25, 50, 50);
+  assert_false(ctx.isPointInPath(path, 50, 50, 'evenodd'));
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.lineTo.basic.html b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.lineTo.basic.html
new file mode 100644
index 0000000000..e0bc64617f
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.lineTo.basic.html
@@ -0,0 +1,35 @@
+
+
+OffscreenCanvas test: 2d.path.lineTo.basic
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.path.lineTo.basic
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.lineTo.basic.worker.js b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.lineTo.basic.worker.js
new file mode 100644
index 0000000000..6e02a1f149
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.lineTo.basic.worker.js
@@ -0,0 +1,30 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.path.lineTo.basic
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#f00';
+  ctx.fillRect(0, 0, 100, 50);
+  ctx.strokeStyle = '#0f0';
+  ctx.lineWidth = 50;
+  ctx.beginPath();
+  ctx.moveTo(0, 25);
+  ctx.lineTo(100, 25);
+  ctx.stroke();
+  _assertPixel(canvas, 50,25, 0,255,0,255);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.lineTo.ensuresubpath.1.html b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.lineTo.ensuresubpath.1.html
new file mode 100644
index 0000000000..2561a2f555
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.lineTo.ensuresubpath.1.html
@@ -0,0 +1,34 @@
+
+
+OffscreenCanvas test: 2d.path.lineTo.ensuresubpath.1
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.path.lineTo.ensuresubpath.1
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              If there is no subpath, the point is added and nothing is drawn
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.lineTo.ensuresubpath.1.worker.js b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.lineTo.ensuresubpath.1.worker.js
new file mode 100644
index 0000000000..ae4d85735e
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.lineTo.ensuresubpath.1.worker.js
@@ -0,0 +1,29 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.path.lineTo.ensuresubpath.1
+// Description:If there is no subpath, the point is added and nothing is drawn
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("If there is no subpath, the point is added and nothing is drawn");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#0f0';
+  ctx.fillRect(0, 0, 100, 50);
+  ctx.strokeStyle = '#f00';
+  ctx.lineWidth = 50;
+  ctx.beginPath();
+  ctx.lineTo(100, 50);
+  ctx.stroke();
+  _assertPixel(canvas, 50,25, 0,255,0,255);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.lineTo.ensuresubpath.2.html b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.lineTo.ensuresubpath.2.html
new file mode 100644
index 0000000000..9ca14a1393
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.lineTo.ensuresubpath.2.html
@@ -0,0 +1,35 @@
+
+
+OffscreenCanvas test: 2d.path.lineTo.ensuresubpath.2
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.path.lineTo.ensuresubpath.2
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              If there is no subpath, the point is added and used for subsequent drawing
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.lineTo.ensuresubpath.2.worker.js b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.lineTo.ensuresubpath.2.worker.js
new file mode 100644
index 0000000000..b6af21235f
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.lineTo.ensuresubpath.2.worker.js
@@ -0,0 +1,30 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.path.lineTo.ensuresubpath.2
+// Description:If there is no subpath, the point is added and used for subsequent drawing
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("If there is no subpath, the point is added and used for subsequent drawing");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#f00';
+  ctx.fillRect(0, 0, 100, 50);
+  ctx.strokeStyle = '#0f0';
+  ctx.lineWidth = 50;
+  ctx.beginPath();
+  ctx.lineTo(0, 25);
+  ctx.lineTo(100, 25);
+  ctx.stroke();
+  _assertPixel(canvas, 50,25, 0,255,0,255);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.lineTo.nextpoint.html b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.lineTo.nextpoint.html
new file mode 100644
index 0000000000..a649d3a86d
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.lineTo.nextpoint.html
@@ -0,0 +1,36 @@
+
+
+OffscreenCanvas test: 2d.path.lineTo.nextpoint
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.path.lineTo.nextpoint
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.lineTo.nextpoint.worker.js b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.lineTo.nextpoint.worker.js
new file mode 100644
index 0000000000..9e4e24a06d
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.lineTo.nextpoint.worker.js
@@ -0,0 +1,31 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.path.lineTo.nextpoint
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#f00';
+  ctx.fillRect(0, 0, 100, 50);
+  ctx.strokeStyle = '#0f0';
+  ctx.lineWidth = 50;
+  ctx.beginPath();
+  ctx.moveTo(-100, -100);
+  ctx.lineTo(0, 25);
+  ctx.lineTo(100, 25);
+  ctx.stroke();
+  _assertPixel(canvas, 50,25, 0,255,0,255);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.lineTo.nonfinite.details.html b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.lineTo.nonfinite.details.html
new file mode 100644
index 0000000000..35bc80d336
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.lineTo.nonfinite.details.html
@@ -0,0 +1,31 @@
+
+
+OffscreenCanvas test: 2d.path.lineTo.nonfinite.details
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.path.lineTo.nonfinite.details
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              lineTo() with Infinity/NaN for first arg still converts the second arg
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.lineTo.nonfinite.details.worker.js b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.lineTo.nonfinite.details.worker.js
new file mode 100644
index 0000000000..5052c74b94
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.lineTo.nonfinite.details.worker.js
@@ -0,0 +1,26 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.path.lineTo.nonfinite.details
+// Description:lineTo() with Infinity/NaN for first arg still converts the second arg
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("lineTo() with Infinity/NaN for first arg still converts the second arg");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  for (var arg1 of [Infinity, -Infinity, NaN]) {
+    var converted = false;
+    ctx.lineTo(arg1, { valueOf: function() { converted = true; return 0; } });
+    _assert(converted, "converted");
+  }
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.lineTo.nonfinite.html b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.lineTo.nonfinite.html
new file mode 100644
index 0000000000..5a144dd7f6
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.lineTo.nonfinite.html
@@ -0,0 +1,41 @@
+
+
+OffscreenCanvas test: 2d.path.lineTo.nonfinite
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.path.lineTo.nonfinite
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              lineTo() with Infinity/NaN is ignored
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.lineTo.nonfinite.worker.js b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.lineTo.nonfinite.worker.js
new file mode 100644
index 0000000000..82921b7cd9
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.lineTo.nonfinite.worker.js
@@ -0,0 +1,36 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.path.lineTo.nonfinite
+// Description:lineTo() with Infinity/NaN is ignored
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("lineTo() with Infinity/NaN is ignored");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.moveTo(0, 0);
+  ctx.lineTo(100, 0);
+  ctx.lineTo(Infinity, 50);
+  ctx.lineTo(-Infinity, 50);
+  ctx.lineTo(NaN, 50);
+  ctx.lineTo(0, Infinity);
+  ctx.lineTo(0, -Infinity);
+  ctx.lineTo(0, NaN);
+  ctx.lineTo(Infinity, Infinity);
+  ctx.lineTo(100, 50);
+  ctx.lineTo(0, 50);
+  ctx.fillStyle = '#0f0';
+  ctx.fill();
+  _assertPixel(canvas, 50,25, 0,255,0,255);
+  _assertPixel(canvas, 90,45, 0,255,0,255);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.moveTo.basic.html b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.moveTo.basic.html
new file mode 100644
index 0000000000..f9777c6ca8
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.moveTo.basic.html
@@ -0,0 +1,36 @@
+
+
+OffscreenCanvas test: 2d.path.moveTo.basic
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.path.moveTo.basic
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.moveTo.basic.worker.js b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.moveTo.basic.worker.js
new file mode 100644
index 0000000000..0b1df374b6
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.moveTo.basic.worker.js
@@ -0,0 +1,31 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.path.moveTo.basic
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#f00';
+  ctx.fillRect(0, 0, 100, 50);
+  ctx.rect(0, 0, 10, 50);
+  ctx.moveTo(100, 0);
+  ctx.lineTo(10, 0);
+  ctx.lineTo(10, 50);
+  ctx.lineTo(100, 50);
+  ctx.fillStyle = '#0f0';
+  ctx.fill();
+  _assertPixel(canvas, 90,25, 0,255,0,255);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.moveTo.multiple.html b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.moveTo.multiple.html
new file mode 100644
index 0000000000..0b56cbbfef
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.moveTo.multiple.html
@@ -0,0 +1,36 @@
+
+
+OffscreenCanvas test: 2d.path.moveTo.multiple
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.path.moveTo.multiple
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.moveTo.multiple.worker.js b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.moveTo.multiple.worker.js
new file mode 100644
index 0000000000..9f49ea8a1b
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.moveTo.multiple.worker.js
@@ -0,0 +1,31 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.path.moveTo.multiple
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#f00';
+  ctx.fillRect(0, 0, 100, 50);
+  ctx.moveTo(0, 25);
+  ctx.moveTo(100, 25);
+  ctx.moveTo(0, 25);
+  ctx.lineTo(100, 25);
+  ctx.strokeStyle = '#0f0';
+  ctx.lineWidth = 50;
+  ctx.stroke();
+  _assertPixel(canvas, 50,25, 0,255,0,255);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.moveTo.newsubpath.html b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.moveTo.newsubpath.html
new file mode 100644
index 0000000000..c2594c006e
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.moveTo.newsubpath.html
@@ -0,0 +1,36 @@
+
+
+OffscreenCanvas test: 2d.path.moveTo.newsubpath
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.path.moveTo.newsubpath
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.moveTo.newsubpath.worker.js b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.moveTo.newsubpath.worker.js
new file mode 100644
index 0000000000..e3c9c8529d
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.moveTo.newsubpath.worker.js
@@ -0,0 +1,31 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.path.moveTo.newsubpath
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#0f0';
+  ctx.fillRect(0, 0, 100, 50);
+  ctx.beginPath();
+  ctx.moveTo(0, 0);
+  ctx.moveTo(100, 0);
+  ctx.moveTo(100, 50);
+  ctx.moveTo(0, 50);
+  ctx.fillStyle = '#f00';
+  ctx.fill();
+  _assertPixel(canvas, 50,25, 0,255,0,255);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.moveTo.nonfinite.html b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.moveTo.nonfinite.html
new file mode 100644
index 0000000000..ea3eb34c76
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.moveTo.nonfinite.html
@@ -0,0 +1,40 @@
+
+
+OffscreenCanvas test: 2d.path.moveTo.nonfinite
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.path.moveTo.nonfinite
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              moveTo() with Infinity/NaN is ignored
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.moveTo.nonfinite.worker.js b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.moveTo.nonfinite.worker.js
new file mode 100644
index 0000000000..97e2bd72e3
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.moveTo.nonfinite.worker.js
@@ -0,0 +1,35 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.path.moveTo.nonfinite
+// Description:moveTo() with Infinity/NaN is ignored
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("moveTo() with Infinity/NaN is ignored");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.moveTo(0, 0);
+  ctx.lineTo(100, 0);
+  ctx.moveTo(Infinity, 50);
+  ctx.moveTo(-Infinity, 50);
+  ctx.moveTo(NaN, 50);
+  ctx.moveTo(0, Infinity);
+  ctx.moveTo(0, -Infinity);
+  ctx.moveTo(0, NaN);
+  ctx.moveTo(Infinity, Infinity);
+  ctx.lineTo(100, 50);
+  ctx.lineTo(0, 50);
+  ctx.fillStyle = '#0f0';
+  ctx.fill();
+  _assertPixel(canvas, 50,25, 0,255,0,255);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.quadraticCurveTo.basic.html b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.quadraticCurveTo.basic.html
new file mode 100644
index 0000000000..4d14ce5585
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.quadraticCurveTo.basic.html
@@ -0,0 +1,35 @@
+
+
+OffscreenCanvas test: 2d.path.quadraticCurveTo.basic
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.path.quadraticCurveTo.basic
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.quadraticCurveTo.basic.worker.js b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.quadraticCurveTo.basic.worker.js
new file mode 100644
index 0000000000..161e5f1a65
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.quadraticCurveTo.basic.worker.js
@@ -0,0 +1,30 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.path.quadraticCurveTo.basic
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#f00';
+  ctx.fillRect(0, 0, 100, 50);
+  ctx.strokeStyle = '#0f0';
+  ctx.lineWidth = 50;
+  ctx.beginPath();
+  ctx.moveTo(0, 25);
+  ctx.quadraticCurveTo(100, 25, 100, 25);
+  ctx.stroke();
+  _assertPixel(canvas, 50,25, 0,255,0,255);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.quadraticCurveTo.ensuresubpath.1.html b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.quadraticCurveTo.ensuresubpath.1.html
new file mode 100644
index 0000000000..3e916f00c7
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.quadraticCurveTo.ensuresubpath.1.html
@@ -0,0 +1,35 @@
+
+
+OffscreenCanvas test: 2d.path.quadraticCurveTo.ensuresubpath.1
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.path.quadraticCurveTo.ensuresubpath.1
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              If there is no subpath, the first control point is added (and nothing is drawn up to it)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.quadraticCurveTo.ensuresubpath.1.worker.js b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.quadraticCurveTo.ensuresubpath.1.worker.js
new file mode 100644
index 0000000000..95dcf2bed1
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.quadraticCurveTo.ensuresubpath.1.worker.js
@@ -0,0 +1,30 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.path.quadraticCurveTo.ensuresubpath.1
+// Description:If there is no subpath, the first control point is added (and nothing is drawn up to it)
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("If there is no subpath, the first control point is added (and nothing is drawn up to it)");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#0f0';
+  ctx.fillRect(0, 0, 100, 50);
+  ctx.strokeStyle = '#f00';
+  ctx.lineWidth = 50;
+  ctx.beginPath();
+  ctx.quadraticCurveTo(100, 50, 200, 50);
+  ctx.stroke();
+  _assertPixel(canvas, 50,25, 0,255,0,255);
+  _assertPixel(canvas, 95,45, 0,255,0,255);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.quadraticCurveTo.ensuresubpath.2.html b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.quadraticCurveTo.ensuresubpath.2.html
new file mode 100644
index 0000000000..2fb05a2658
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.quadraticCurveTo.ensuresubpath.2.html
@@ -0,0 +1,35 @@
+
+
+OffscreenCanvas test: 2d.path.quadraticCurveTo.ensuresubpath.2
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.path.quadraticCurveTo.ensuresubpath.2
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              If there is no subpath, the first control point is added
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.quadraticCurveTo.ensuresubpath.2.worker.js b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.quadraticCurveTo.ensuresubpath.2.worker.js
new file mode 100644
index 0000000000..4beaf9dae2
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.quadraticCurveTo.ensuresubpath.2.worker.js
@@ -0,0 +1,30 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.path.quadraticCurveTo.ensuresubpath.2
+// Description:If there is no subpath, the first control point is added
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("If there is no subpath, the first control point is added");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#f00';
+  ctx.fillRect(0, 0, 100, 50);
+  ctx.strokeStyle = '#0f0';
+  ctx.lineWidth = 50;
+  ctx.beginPath();
+  ctx.quadraticCurveTo(0, 25, 100, 25);
+  ctx.stroke();
+  _assertPixel(canvas, 50,25, 0,255,0,255);
+  _assertPixel(canvas, 5,45, 0,255,0,255);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.quadraticCurveTo.nonfinite.html b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.quadraticCurveTo.nonfinite.html
new file mode 100644
index 0000000000..ee4f333a08
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.quadraticCurveTo.nonfinite.html
@@ -0,0 +1,57 @@
+
+
+OffscreenCanvas test: 2d.path.quadraticCurveTo.nonfinite
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.path.quadraticCurveTo.nonfinite
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              quadraticCurveTo() with Infinity/NaN is ignored
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.quadraticCurveTo.nonfinite.worker.js b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.quadraticCurveTo.nonfinite.worker.js
new file mode 100644
index 0000000000..a61eb9a8ca
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.quadraticCurveTo.nonfinite.worker.js
@@ -0,0 +1,52 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.path.quadraticCurveTo.nonfinite
+// Description:quadraticCurveTo() with Infinity/NaN is ignored
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("quadraticCurveTo() with Infinity/NaN is ignored");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.moveTo(0, 0);
+  ctx.lineTo(100, 0);
+  ctx.quadraticCurveTo(Infinity, 50, 0, 50);
+  ctx.quadraticCurveTo(-Infinity, 50, 0, 50);
+  ctx.quadraticCurveTo(NaN, 50, 0, 50);
+  ctx.quadraticCurveTo(0, Infinity, 0, 50);
+  ctx.quadraticCurveTo(0, -Infinity, 0, 50);
+  ctx.quadraticCurveTo(0, NaN, 0, 50);
+  ctx.quadraticCurveTo(0, 50, Infinity, 50);
+  ctx.quadraticCurveTo(0, 50, -Infinity, 50);
+  ctx.quadraticCurveTo(0, 50, NaN, 50);
+  ctx.quadraticCurveTo(0, 50, 0, Infinity);
+  ctx.quadraticCurveTo(0, 50, 0, -Infinity);
+  ctx.quadraticCurveTo(0, 50, 0, NaN);
+  ctx.quadraticCurveTo(Infinity, Infinity, 0, 50);
+  ctx.quadraticCurveTo(Infinity, Infinity, Infinity, 50);
+  ctx.quadraticCurveTo(Infinity, Infinity, Infinity, Infinity);
+  ctx.quadraticCurveTo(Infinity, Infinity, 0, Infinity);
+  ctx.quadraticCurveTo(Infinity, 50, Infinity, 50);
+  ctx.quadraticCurveTo(Infinity, 50, Infinity, Infinity);
+  ctx.quadraticCurveTo(Infinity, 50, 0, Infinity);
+  ctx.quadraticCurveTo(0, Infinity, Infinity, 50);
+  ctx.quadraticCurveTo(0, Infinity, Infinity, Infinity);
+  ctx.quadraticCurveTo(0, Infinity, 0, Infinity);
+  ctx.quadraticCurveTo(0, 50, Infinity, Infinity);
+  ctx.lineTo(100, 50);
+  ctx.lineTo(0, 50);
+  ctx.fillStyle = '#0f0';
+  ctx.fill();
+  _assertPixel(canvas, 50,25, 0,255,0,255);
+  _assertPixel(canvas, 90,45, 0,255,0,255);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.quadraticCurveTo.scaled.html b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.quadraticCurveTo.scaled.html
new file mode 100644
index 0000000000..92c9377d6f
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.quadraticCurveTo.scaled.html
@@ -0,0 +1,40 @@
+
+
+OffscreenCanvas test: 2d.path.quadraticCurveTo.scaled
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.path.quadraticCurveTo.scaled
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.quadraticCurveTo.scaled.worker.js b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.quadraticCurveTo.scaled.worker.js
new file mode 100644
index 0000000000..04fd6e904d
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.quadraticCurveTo.scaled.worker.js
@@ -0,0 +1,35 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.path.quadraticCurveTo.scaled
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#f00';
+  ctx.fillRect(0, 0, 100, 50);
+  ctx.scale(1000, 1000);
+  ctx.strokeStyle = '#0f0';
+  ctx.lineWidth = 0.055;
+  ctx.beginPath();
+  ctx.moveTo(-1, 1.05);
+  ctx.quadraticCurveTo(0, -1, 1.2, 1.05);
+  ctx.stroke();
+  _assertPixel(canvas, 50,25, 0,255,0,255);
+  _assertPixel(canvas, 1,1, 0,255,0,255);
+  _assertPixel(canvas, 98,1, 0,255,0,255);
+  _assertPixel(canvas, 1,48, 0,255,0,255);
+  _assertPixel(canvas, 98,48, 0,255,0,255);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.quadraticCurveTo.shape.html b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.quadraticCurveTo.shape.html
new file mode 100644
index 0000000000..ea42d669cb
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.quadraticCurveTo.shape.html
@@ -0,0 +1,39 @@
+
+
+OffscreenCanvas test: 2d.path.quadraticCurveTo.shape
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.path.quadraticCurveTo.shape
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.quadraticCurveTo.shape.worker.js b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.quadraticCurveTo.shape.worker.js
new file mode 100644
index 0000000000..9f2afea09d
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.quadraticCurveTo.shape.worker.js
@@ -0,0 +1,34 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.path.quadraticCurveTo.shape
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#f00';
+  ctx.fillRect(0, 0, 100, 50);
+  ctx.strokeStyle = '#0f0';
+  ctx.lineWidth = 55;
+  ctx.beginPath();
+  ctx.moveTo(-1000, 1050);
+  ctx.quadraticCurveTo(0, -1000, 1200, 1050);
+  ctx.stroke();
+  _assertPixel(canvas, 50,25, 0,255,0,255);
+  _assertPixel(canvas, 1,1, 0,255,0,255);
+  _assertPixel(canvas, 98,1, 0,255,0,255);
+  _assertPixel(canvas, 1,48, 0,255,0,255);
+  _assertPixel(canvas, 98,48, 0,255,0,255);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.rect.basic.html b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.rect.basic.html
new file mode 100644
index 0000000000..e8d874709d
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.rect.basic.html
@@ -0,0 +1,32 @@
+
+
+OffscreenCanvas test: 2d.path.rect.basic
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.path.rect.basic
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.rect.basic.worker.js b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.rect.basic.worker.js
new file mode 100644
index 0000000000..c8eb3838f9
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.rect.basic.worker.js
@@ -0,0 +1,27 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.path.rect.basic
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#f00';
+  ctx.fillRect(0, 0, 100, 50);
+  ctx.fillStyle = '#0f0';
+  ctx.rect(0, 0, 100, 50);
+  ctx.fill();
+  _assertPixel(canvas, 50,25, 0,255,0,255);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.rect.closed.html b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.rect.closed.html
new file mode 100644
index 0000000000..6f61874390
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.rect.closed.html
@@ -0,0 +1,34 @@
+
+
+OffscreenCanvas test: 2d.path.rect.closed
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.path.rect.closed
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.rect.closed.worker.js b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.rect.closed.worker.js
new file mode 100644
index 0000000000..f40868730b
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.rect.closed.worker.js
@@ -0,0 +1,29 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.path.rect.closed
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#f00';
+  ctx.fillRect(0, 0, 100, 50);
+  ctx.strokeStyle = '#0f0';
+  ctx.lineWidth = 200;
+  ctx.lineJoin = 'miter';
+  ctx.rect(100, 50, 100, 100);
+  ctx.stroke();
+  _assertPixel(canvas, 50,25, 0,255,0,255);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.rect.end.1.html b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.rect.end.1.html
new file mode 100644
index 0000000000..e4d5ece132
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.rect.end.1.html
@@ -0,0 +1,34 @@
+
+
+OffscreenCanvas test: 2d.path.rect.end.1
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.path.rect.end.1
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.rect.end.1.worker.js b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.rect.end.1.worker.js
new file mode 100644
index 0000000000..fcf9d0526f
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.rect.end.1.worker.js
@@ -0,0 +1,29 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.path.rect.end.1
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#f00';
+  ctx.fillRect(0, 0, 100, 50);
+  ctx.strokeStyle = '#0f0';
+  ctx.lineWidth = 100;
+  ctx.rect(200, 100, 400, 1000);
+  ctx.lineTo(-2000, -1000);
+  ctx.stroke();
+  _assertPixel(canvas, 50,25, 0,255,0,255);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.rect.end.2.html b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.rect.end.2.html
new file mode 100644
index 0000000000..d6bad78abb
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.rect.end.2.html
@@ -0,0 +1,39 @@
+
+
+OffscreenCanvas test: 2d.path.rect.end.2
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.path.rect.end.2
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.rect.end.2.worker.js b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.rect.end.2.worker.js
new file mode 100644
index 0000000000..84c1b71d71
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.rect.end.2.worker.js
@@ -0,0 +1,34 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.path.rect.end.2
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#f00';
+  ctx.fillRect(0, 0, 100, 50);
+  ctx.strokeStyle = '#0f0';
+  ctx.lineWidth = 450;
+  ctx.lineCap = 'round';
+  ctx.lineJoin = 'bevel';
+  ctx.rect(150, 150, 2000, 2000);
+  ctx.lineTo(160, 160);
+  ctx.stroke();
+  _assertPixel(canvas, 1,1, 0,255,0,255);
+  _assertPixel(canvas, 98,1, 0,255,0,255);
+  _assertPixel(canvas, 1,48, 0,255,0,255);
+  _assertPixel(canvas, 98,48, 0,255,0,255);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.rect.negative.html b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.rect.negative.html
new file mode 100644
index 0000000000..730e2e887a
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.rect.negative.html
@@ -0,0 +1,39 @@
+
+
+OffscreenCanvas test: 2d.path.rect.negative
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.path.rect.negative
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.rect.negative.worker.js b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.rect.negative.worker.js
new file mode 100644
index 0000000000..44449e85e2
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.rect.negative.worker.js
@@ -0,0 +1,34 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.path.rect.negative
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#f00';
+  ctx.fillRect(0, 0, 100, 50);
+  ctx.beginPath();
+  ctx.fillStyle = '#0f0';
+  ctx.rect(0, 0, 50, 25);
+  ctx.rect(100, 0, -50, 25);
+  ctx.rect(0, 50, 50, -25);
+  ctx.rect(100, 50, -50, -25);
+  ctx.fill();
+  _assertPixel(canvas, 25,12, 0,255,0,255);
+  _assertPixel(canvas, 75,12, 0,255,0,255);
+  _assertPixel(canvas, 25,37, 0,255,0,255);
+  _assertPixel(canvas, 75,37, 0,255,0,255);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.rect.newsubpath.html b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.rect.newsubpath.html
new file mode 100644
index 0000000000..05b972e045
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.rect.newsubpath.html
@@ -0,0 +1,36 @@
+
+
+OffscreenCanvas test: 2d.path.rect.newsubpath
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.path.rect.newsubpath
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.rect.newsubpath.worker.js b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.rect.newsubpath.worker.js
new file mode 100644
index 0000000000..bdf4a926c1
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.rect.newsubpath.worker.js
@@ -0,0 +1,31 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.path.rect.newsubpath
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#0f0';
+  ctx.fillRect(0, 0, 100, 50);
+  ctx.beginPath();
+  ctx.strokeStyle = '#f00';
+  ctx.lineWidth = 50;
+  ctx.moveTo(-100, 25);
+  ctx.lineTo(-50, 25);
+  ctx.rect(200, 25, 1, 1);
+  ctx.stroke();
+  _assertPixel(canvas, 50,25, 0,255,0,255);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.rect.nonfinite.html b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.rect.nonfinite.html
new file mode 100644
index 0000000000..16d76aaf18
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.rect.nonfinite.html
@@ -0,0 +1,57 @@
+
+
+OffscreenCanvas test: 2d.path.rect.nonfinite
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.path.rect.nonfinite
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              rect() with Infinity/NaN is ignored
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.rect.nonfinite.worker.js b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.rect.nonfinite.worker.js
new file mode 100644
index 0000000000..307a5ec08f
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.rect.nonfinite.worker.js
@@ -0,0 +1,52 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.path.rect.nonfinite
+// Description:rect() with Infinity/NaN is ignored
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("rect() with Infinity/NaN is ignored");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.moveTo(0, 0);
+  ctx.lineTo(100, 0);
+  ctx.rect(Infinity, 50, 1, 1);
+  ctx.rect(-Infinity, 50, 1, 1);
+  ctx.rect(NaN, 50, 1, 1);
+  ctx.rect(0, Infinity, 1, 1);
+  ctx.rect(0, -Infinity, 1, 1);
+  ctx.rect(0, NaN, 1, 1);
+  ctx.rect(0, 50, Infinity, 1);
+  ctx.rect(0, 50, -Infinity, 1);
+  ctx.rect(0, 50, NaN, 1);
+  ctx.rect(0, 50, 1, Infinity);
+  ctx.rect(0, 50, 1, -Infinity);
+  ctx.rect(0, 50, 1, NaN);
+  ctx.rect(Infinity, Infinity, 1, 1);
+  ctx.rect(Infinity, Infinity, Infinity, 1);
+  ctx.rect(Infinity, Infinity, Infinity, Infinity);
+  ctx.rect(Infinity, Infinity, 1, Infinity);
+  ctx.rect(Infinity, 50, Infinity, 1);
+  ctx.rect(Infinity, 50, Infinity, Infinity);
+  ctx.rect(Infinity, 50, 1, Infinity);
+  ctx.rect(0, Infinity, Infinity, 1);
+  ctx.rect(0, Infinity, Infinity, Infinity);
+  ctx.rect(0, Infinity, 1, Infinity);
+  ctx.rect(0, 50, Infinity, Infinity);
+  ctx.lineTo(100, 50);
+  ctx.lineTo(0, 50);
+  ctx.fillStyle = '#0f0';
+  ctx.fill();
+  _assertPixel(canvas, 50,25, 0,255,0,255);
+  _assertPixel(canvas, 90,45, 0,255,0,255);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.rect.selfintersect.html b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.rect.selfintersect.html
new file mode 100644
index 0000000000..af97fa6d38
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.rect.selfintersect.html
@@ -0,0 +1,34 @@
+
+
+OffscreenCanvas test: 2d.path.rect.selfintersect
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.path.rect.selfintersect
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.rect.selfintersect.worker.js b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.rect.selfintersect.worker.js
new file mode 100644
index 0000000000..495d016e80
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.rect.selfintersect.worker.js
@@ -0,0 +1,29 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.path.rect.selfintersect
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#f00';
+  ctx.fillRect(0, 0, 100, 50);
+  ctx.strokeStyle = '#0f0';
+  ctx.lineWidth = 90;
+  ctx.beginPath();
+  ctx.rect(45, 20, 10, 10);
+  ctx.stroke();
+  _assertPixel(canvas, 50,25, 0,255,0,255);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.rect.winding.html b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.rect.winding.html
new file mode 100644
index 0000000000..a7f79c5223
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.rect.winding.html
@@ -0,0 +1,39 @@
+
+
+OffscreenCanvas test: 2d.path.rect.winding
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.path.rect.winding
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.rect.winding.worker.js b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.rect.winding.worker.js
new file mode 100644
index 0000000000..45ff0427e1
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.rect.winding.worker.js
@@ -0,0 +1,34 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.path.rect.winding
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#0f0';
+  ctx.fillRect(0, 0, 100, 50);
+  ctx.beginPath();
+  ctx.fillStyle = '#f00';
+  ctx.rect(0, 0, 50, 50);
+  ctx.rect(100, 50, -50, -50);
+  ctx.rect(0, 25, 100, -25);
+  ctx.rect(100, 25, -100, 25);
+  ctx.fill();
+  _assertPixel(canvas, 25,12, 0,255,0,255);
+  _assertPixel(canvas, 75,12, 0,255,0,255);
+  _assertPixel(canvas, 25,37, 0,255,0,255);
+  _assertPixel(canvas, 75,37, 0,255,0,255);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.rect.zero.1.html b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.rect.zero.1.html
new file mode 100644
index 0000000000..45dac2079d
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.rect.zero.1.html
@@ -0,0 +1,34 @@
+
+
+OffscreenCanvas test: 2d.path.rect.zero.1
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.path.rect.zero.1
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.rect.zero.1.worker.js b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.rect.zero.1.worker.js
new file mode 100644
index 0000000000..de6fb58c8a
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.rect.zero.1.worker.js
@@ -0,0 +1,29 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.path.rect.zero.1
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#f00';
+  ctx.fillRect(0, 0, 100, 50);
+  ctx.strokeStyle = '#0f0';
+  ctx.lineWidth = 100;
+  ctx.beginPath();
+  ctx.rect(0, 50, 100, 0);
+  ctx.stroke();
+  _assertPixel(canvas, 50,25, 0,255,0,255);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.rect.zero.2.html b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.rect.zero.2.html
new file mode 100644
index 0000000000..0386ea06e7
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.rect.zero.2.html
@@ -0,0 +1,34 @@
+
+
+OffscreenCanvas test: 2d.path.rect.zero.2
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.path.rect.zero.2
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.rect.zero.2.worker.js b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.rect.zero.2.worker.js
new file mode 100644
index 0000000000..8e323d2dd0
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.rect.zero.2.worker.js
@@ -0,0 +1,29 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.path.rect.zero.2
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#f00';
+  ctx.fillRect(0, 0, 100, 50);
+  ctx.strokeStyle = '#0f0';
+  ctx.lineWidth = 100;
+  ctx.beginPath();
+  ctx.rect(50, -100, 0, 250);
+  ctx.stroke();
+  _assertPixel(canvas, 50,25, 0,255,0,255);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.rect.zero.3.html b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.rect.zero.3.html
new file mode 100644
index 0000000000..1299040929
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.rect.zero.3.html
@@ -0,0 +1,34 @@
+
+
+OffscreenCanvas test: 2d.path.rect.zero.3
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.path.rect.zero.3
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.rect.zero.3.worker.js b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.rect.zero.3.worker.js
new file mode 100644
index 0000000000..5e6f490c73
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.rect.zero.3.worker.js
@@ -0,0 +1,29 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.path.rect.zero.3
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#0f0';
+  ctx.fillRect(0, 0, 100, 50);
+  ctx.strokeStyle = '#f00';
+  ctx.lineWidth = 100;
+  ctx.beginPath();
+  ctx.rect(50, 25, 0, 0);
+  ctx.stroke();
+  _assertPixel(canvas, 50,25, 0,255,0,255);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.rect.zero.4.html b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.rect.zero.4.html
new file mode 100644
index 0000000000..93da1300de
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.rect.zero.4.html
@@ -0,0 +1,34 @@
+
+
+OffscreenCanvas test: 2d.path.rect.zero.4
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.path.rect.zero.4
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.rect.zero.4.worker.js b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.rect.zero.4.worker.js
new file mode 100644
index 0000000000..e19da3b917
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.rect.zero.4.worker.js
@@ -0,0 +1,29 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.path.rect.zero.4
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#f00';
+  ctx.fillRect(0, 0, 100, 50);
+  ctx.strokeStyle = '#0f0';
+  ctx.lineWidth = 50;
+  ctx.rect(100, 25, 0, 0);
+  ctx.lineTo(0, 25);
+  ctx.stroke();
+  _assertPixel(canvas, 50,25, 0,255,0,255);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.rect.zero.5.html b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.rect.zero.5.html
new file mode 100644
index 0000000000..45a7f03813
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.rect.zero.5.html
@@ -0,0 +1,34 @@
+
+
+OffscreenCanvas test: 2d.path.rect.zero.5
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.path.rect.zero.5
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.rect.zero.5.worker.js b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.rect.zero.5.worker.js
new file mode 100644
index 0000000000..d39a741573
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.rect.zero.5.worker.js
@@ -0,0 +1,29 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.path.rect.zero.5
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#0f0';
+  ctx.fillRect(0, 0, 100, 50);
+  ctx.strokeStyle = '#f00';
+  ctx.lineWidth = 50;
+  ctx.moveTo(0, 0);
+  ctx.rect(100, 25, 0, 0);
+  ctx.stroke();
+  _assertPixel(canvas, 50,25, 0,255,0,255);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.rect.zero.6.html b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.rect.zero.6.html
new file mode 100644
index 0000000000..ac74e20660
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.rect.zero.6.html
@@ -0,0 +1,36 @@
+
+
+OffscreenCanvas test: 2d.path.rect.zero.6
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.path.rect.zero.6
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.rect.zero.6.worker.js b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.rect.zero.6.worker.js
new file mode 100644
index 0000000000..a567359c30
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.rect.zero.6.worker.js
@@ -0,0 +1,31 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.path.rect.zero.6
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#0f0';
+  ctx.fillRect(0, 0, 100, 50);
+  ctx.strokeStyle = '#f00';
+  ctx.lineJoin = 'miter';
+  ctx.miterLimit = 1.5;
+  ctx.lineWidth = 200;
+  ctx.beginPath();
+  ctx.rect(100, 25, 1000, 0);
+  ctx.stroke();
+  _assertPixel(canvas, 50,25, 0,255,0,255);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.1.radius.dompoint.html b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.1.radius.dompoint.html
new file mode 100644
index 0000000000..f7e80a0119
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.1.radius.dompoint.html
@@ -0,0 +1,55 @@
+
+
+OffscreenCanvas test: 2d.path.roundrect.1.radius.dompoint
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.path.roundrect.1.radius.dompoint
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Verify that when one radius is given to roundRect(), specified as a DOMPoint, it applies to all corners.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.1.radius.dompoint.single argument.html b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.1.radius.dompoint.single argument.html
new file mode 100644
index 0000000000..4ea78c32d1
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.1.radius.dompoint.single argument.html	
@@ -0,0 +1,55 @@
+
+
+OffscreenCanvas test: 2d.path.roundrect.1.radius.dompoint.single argument
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.path.roundrect.1.radius.dompoint.single argument
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Verify that when one radius is given to roundRect() as a non-array argument, specified as a DOMPoint, it applies to all corners.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.1.radius.dompoint.single argument.worker.js b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.1.radius.dompoint.single argument.worker.js
new file mode 100644
index 0000000000..b93d88e89c
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.1.radius.dompoint.single argument.worker.js	
@@ -0,0 +1,50 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.path.roundrect.1.radius.dompoint.single argument
+// Description:Verify that when one radius is given to roundRect() as a non-array argument, specified as a DOMPoint, it applies to all corners.
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("Verify that when one radius is given to roundRect() as a non-array argument, specified as a DOMPoint, it applies to all corners.");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#f00';
+  ctx.fillRect(0, 0, 100, 50);
+  ctx.roundRect(0, 0, 100, 50, new DOMPoint(40, 20));
+  ctx.fillStyle = '#0f0';
+  ctx.fill();
+
+  // top-left corner
+  _assertPixel(canvas, 20,1, 255,0,0,255);
+  _assertPixel(canvas, 41,1, 0,255,0,255);
+  _assertPixel(canvas, 1,10, 255,0,0,255);
+  _assertPixel(canvas, 1,21, 0,255,0,255);
+
+  // top-right corner
+  _assertPixel(canvas, 79,1, 255,0,0,255);
+  _assertPixel(canvas, 58,1, 0,255,0,255);
+  _assertPixel(canvas, 98,10, 255,0,0,255);
+  _assertPixel(canvas, 98,21, 0,255,0,255);
+
+  // bottom-right corner
+  _assertPixel(canvas, 79,48, 255,0,0,255);
+  _assertPixel(canvas, 58,48, 0,255,0,255);
+  _assertPixel(canvas, 98,39, 255,0,0,255);
+  _assertPixel(canvas, 98,28, 0,255,0,255);
+
+  // bottom-left corner
+  _assertPixel(canvas, 20,48, 255,0,0,255);
+  _assertPixel(canvas, 41,48, 0,255,0,255);
+  _assertPixel(canvas, 1,39, 255,0,0,255);
+  _assertPixel(canvas, 1,28, 0,255,0,255);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.1.radius.dompoint.worker.js b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.1.radius.dompoint.worker.js
new file mode 100644
index 0000000000..06d787437e
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.1.radius.dompoint.worker.js
@@ -0,0 +1,50 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.path.roundrect.1.radius.dompoint
+// Description:Verify that when one radius is given to roundRect(), specified as a DOMPoint, it applies to all corners.
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("Verify that when one radius is given to roundRect(), specified as a DOMPoint, it applies to all corners.");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#f00';
+  ctx.fillRect(0, 0, 100, 50);
+  ctx.roundRect(0, 0, 100, 50, [new DOMPoint(40, 20)]);
+  ctx.fillStyle = '#0f0';
+  ctx.fill();
+
+  // top-left corner
+  _assertPixel(canvas, 20,1, 255,0,0,255);
+  _assertPixel(canvas, 41,1, 0,255,0,255);
+  _assertPixel(canvas, 1,10, 255,0,0,255);
+  _assertPixel(canvas, 1,21, 0,255,0,255);
+
+  // top-right corner
+  _assertPixel(canvas, 79,1, 255,0,0,255);
+  _assertPixel(canvas, 58,1, 0,255,0,255);
+  _assertPixel(canvas, 98,10, 255,0,0,255);
+  _assertPixel(canvas, 98,21, 0,255,0,255);
+
+  // bottom-right corner
+  _assertPixel(canvas, 79,48, 255,0,0,255);
+  _assertPixel(canvas, 58,48, 0,255,0,255);
+  _assertPixel(canvas, 98,39, 255,0,0,255);
+  _assertPixel(canvas, 98,28, 0,255,0,255);
+
+  // bottom-left corner
+  _assertPixel(canvas, 20,48, 255,0,0,255);
+  _assertPixel(canvas, 41,48, 0,255,0,255);
+  _assertPixel(canvas, 1,39, 255,0,0,255);
+  _assertPixel(canvas, 1,28, 0,255,0,255);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.1.radius.dompointinit.html b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.1.radius.dompointinit.html
new file mode 100644
index 0000000000..97084a446f
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.1.radius.dompointinit.html
@@ -0,0 +1,55 @@
+
+
+OffscreenCanvas test: 2d.path.roundrect.1.radius.dompointinit
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.path.roundrect.1.radius.dompointinit
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Verify that when one radius is given to roundRect(), specified as a DOMPointInit, applies to all corners.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.1.radius.dompointinit.single.argument.html b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.1.radius.dompointinit.single.argument.html
new file mode 100644
index 0000000000..10c5c14cff
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.1.radius.dompointinit.single.argument.html
@@ -0,0 +1,55 @@
+
+
+OffscreenCanvas test: 2d.path.roundrect.1.radius.dompointinit.single.argument
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.path.roundrect.1.radius.dompointinit.single.argument
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Verify that when one radius is given to roundRect() as a non-array argument, specified as a DOMPointInit, applies to all corners.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.1.radius.dompointinit.single.argument.worker.js b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.1.radius.dompointinit.single.argument.worker.js
new file mode 100644
index 0000000000..a62370677b
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.1.radius.dompointinit.single.argument.worker.js
@@ -0,0 +1,50 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.path.roundrect.1.radius.dompointinit.single.argument
+// Description:Verify that when one radius is given to roundRect() as a non-array argument, specified as a DOMPointInit, applies to all corners.
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("Verify that when one radius is given to roundRect() as a non-array argument, specified as a DOMPointInit, applies to all corners.");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#f00';
+  ctx.fillRect(0, 0, 100, 50);
+  ctx.roundRect(0, 0, 100, 50, {x: 40, y: 20});
+  ctx.fillStyle = '#0f0';
+  ctx.fill();
+
+  // top-left corner
+  _assertPixel(canvas, 20,1, 255,0,0,255);
+  _assertPixel(canvas, 41,1, 0,255,0,255);
+  _assertPixel(canvas, 1,10, 255,0,0,255);
+  _assertPixel(canvas, 1,21, 0,255,0,255);
+
+  // top-right corner
+  _assertPixel(canvas, 79,1, 255,0,0,255);
+  _assertPixel(canvas, 58,1, 0,255,0,255);
+  _assertPixel(canvas, 98,10, 255,0,0,255);
+  _assertPixel(canvas, 98,21, 0,255,0,255);
+
+  // bottom-right corner
+  _assertPixel(canvas, 79,48, 255,0,0,255);
+  _assertPixel(canvas, 58,48, 0,255,0,255);
+  _assertPixel(canvas, 98,39, 255,0,0,255);
+  _assertPixel(canvas, 98,28, 0,255,0,255);
+
+  // bottom-left corner
+  _assertPixel(canvas, 20,48, 255,0,0,255);
+  _assertPixel(canvas, 41,48, 0,255,0,255);
+  _assertPixel(canvas, 1,39, 255,0,0,255);
+  _assertPixel(canvas, 1,28, 0,255,0,255);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.1.radius.dompointinit.worker.js b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.1.radius.dompointinit.worker.js
new file mode 100644
index 0000000000..56c8e1fcef
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.1.radius.dompointinit.worker.js
@@ -0,0 +1,50 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.path.roundrect.1.radius.dompointinit
+// Description:Verify that when one radius is given to roundRect(), specified as a DOMPointInit, applies to all corners.
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("Verify that when one radius is given to roundRect(), specified as a DOMPointInit, applies to all corners.");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#f00';
+  ctx.fillRect(0, 0, 100, 50);
+  ctx.roundRect(0, 0, 100, 50, [{x: 40, y: 20}]);
+  ctx.fillStyle = '#0f0';
+  ctx.fill();
+
+  // top-left corner
+  _assertPixel(canvas, 20,1, 255,0,0,255);
+  _assertPixel(canvas, 41,1, 0,255,0,255);
+  _assertPixel(canvas, 1,10, 255,0,0,255);
+  _assertPixel(canvas, 1,21, 0,255,0,255);
+
+  // top-right corner
+  _assertPixel(canvas, 79,1, 255,0,0,255);
+  _assertPixel(canvas, 58,1, 0,255,0,255);
+  _assertPixel(canvas, 98,10, 255,0,0,255);
+  _assertPixel(canvas, 98,21, 0,255,0,255);
+
+  // bottom-right corner
+  _assertPixel(canvas, 79,48, 255,0,0,255);
+  _assertPixel(canvas, 58,48, 0,255,0,255);
+  _assertPixel(canvas, 98,39, 255,0,0,255);
+  _assertPixel(canvas, 98,28, 0,255,0,255);
+
+  // bottom-left corner
+  _assertPixel(canvas, 20,48, 255,0,0,255);
+  _assertPixel(canvas, 41,48, 0,255,0,255);
+  _assertPixel(canvas, 1,39, 255,0,0,255);
+  _assertPixel(canvas, 1,28, 0,255,0,255);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.1.radius.double.html b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.1.radius.double.html
new file mode 100644
index 0000000000..33574eeaa0
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.1.radius.double.html
@@ -0,0 +1,35 @@
+
+
+OffscreenCanvas test: 2d.path.roundrect.1.radius.double
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.path.roundrect.1.radius.double
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Verify that when one radius is given to roundRect(), specified as a double, it applies to all corners.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.1.radius.double.single.argument.html b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.1.radius.double.single.argument.html
new file mode 100644
index 0000000000..b2c826ff38
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.1.radius.double.single.argument.html
@@ -0,0 +1,35 @@
+
+
+OffscreenCanvas test: 2d.path.roundrect.1.radius.double.single.argument
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.path.roundrect.1.radius.double.single.argument
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Verify that when one radius is given to roundRect() as a non-array argument, specified as a double, it applies to all corners.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.1.radius.double.single.argument.worker.js b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.1.radius.double.single.argument.worker.js
new file mode 100644
index 0000000000..04350e81aa
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.1.radius.double.single.argument.worker.js
@@ -0,0 +1,30 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.path.roundrect.1.radius.double.single.argument
+// Description:Verify that when one radius is given to roundRect() as a non-array argument, specified as a double, it applies to all corners.
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("Verify that when one radius is given to roundRect() as a non-array argument, specified as a double, it applies to all corners.");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#f00';
+  ctx.fillRect(0, 0, 100, 50);
+  ctx.roundRect(0, 0, 100, 50, 20);
+  ctx.fillStyle = '#0f0';
+  ctx.fill();
+  _assertPixel(canvas, 1,1, 255,0,0,255);
+  _assertPixel(canvas, 98,1, 255,0,0,255);
+  _assertPixel(canvas, 98,48, 255,0,0,255);
+  _assertPixel(canvas, 1,48, 255,0,0,255);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.1.radius.double.worker.js b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.1.radius.double.worker.js
new file mode 100644
index 0000000000..ef9da08d61
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.1.radius.double.worker.js
@@ -0,0 +1,30 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.path.roundrect.1.radius.double
+// Description:Verify that when one radius is given to roundRect(), specified as a double, it applies to all corners.
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("Verify that when one radius is given to roundRect(), specified as a double, it applies to all corners.");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#f00';
+  ctx.fillRect(0, 0, 100, 50);
+  ctx.roundRect(0, 0, 100, 50, [20]);
+  ctx.fillStyle = '#0f0';
+  ctx.fill();
+  _assertPixel(canvas, 1,1, 255,0,0,255);
+  _assertPixel(canvas, 98,1, 255,0,0,255);
+  _assertPixel(canvas, 98,48, 255,0,0,255);
+  _assertPixel(canvas, 1,48, 255,0,0,255);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.2.radii.1.dompoint.html b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.2.radii.1.dompoint.html
new file mode 100644
index 0000000000..7f67c42ed4
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.2.radii.1.dompoint.html
@@ -0,0 +1,47 @@
+
+
+OffscreenCanvas test: 2d.path.roundrect.2.radii.1.dompoint
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.path.roundrect.2.radii.1.dompoint
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Verify that when two radii are given to roundRect(), the first radius, specified as a DOMPoint, applies to the top-left and bottom-right corners.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.2.radii.1.dompoint.worker.js b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.2.radii.1.dompoint.worker.js
new file mode 100644
index 0000000000..5d0387d0d1
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.2.radii.1.dompoint.worker.js
@@ -0,0 +1,42 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.path.roundrect.2.radii.1.dompoint
+// Description:Verify that when two radii are given to roundRect(), the first radius, specified as a DOMPoint, applies to the top-left and bottom-right corners.
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("Verify that when two radii are given to roundRect(), the first radius, specified as a DOMPoint, applies to the top-left and bottom-right corners.");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#f00';
+  ctx.fillRect(0, 0, 100, 50);
+  ctx.roundRect(0, 0, 100, 50, [new DOMPoint(40, 20), 0]);
+  ctx.fillStyle = '#0f0';
+  ctx.fill();
+
+  // top-left corner
+  _assertPixel(canvas, 20,1, 255,0,0,255);
+  _assertPixel(canvas, 41,1, 0,255,0,255);
+  _assertPixel(canvas, 1,10, 255,0,0,255);
+  _assertPixel(canvas, 1,21, 0,255,0,255);
+
+  // bottom-right corner
+  _assertPixel(canvas, 79,48, 255,0,0,255);
+  _assertPixel(canvas, 58,48, 0,255,0,255);
+  _assertPixel(canvas, 98,39, 255,0,0,255);
+  _assertPixel(canvas, 98,28, 0,255,0,255);
+
+  // other corners
+  _assertPixel(canvas, 98,1, 0,255,0,255);
+  _assertPixel(canvas, 1,48, 0,255,0,255);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.2.radii.1.dompointinit.html b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.2.radii.1.dompointinit.html
new file mode 100644
index 0000000000..2ac0347d96
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.2.radii.1.dompointinit.html
@@ -0,0 +1,47 @@
+
+
+OffscreenCanvas test: 2d.path.roundrect.2.radii.1.dompointinit
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.path.roundrect.2.radii.1.dompointinit
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Verify that when two radii are given to roundRect(), the first radius, specified as a DOMPointInit, applies to the top-left and bottom-right corners.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.2.radii.1.dompointinit.worker.js b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.2.radii.1.dompointinit.worker.js
new file mode 100644
index 0000000000..240a36e846
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.2.radii.1.dompointinit.worker.js
@@ -0,0 +1,42 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.path.roundrect.2.radii.1.dompointinit
+// Description:Verify that when two radii are given to roundRect(), the first radius, specified as a DOMPointInit, applies to the top-left and bottom-right corners.
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("Verify that when two radii are given to roundRect(), the first radius, specified as a DOMPointInit, applies to the top-left and bottom-right corners.");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#f00';
+  ctx.fillRect(0, 0, 100, 50);
+  ctx.roundRect(0, 0, 100, 50, [{x: 40, y: 20}, 0]);
+  ctx.fillStyle = '#0f0';
+  ctx.fill();
+
+  // top-left corner
+  _assertPixel(canvas, 20,1, 255,0,0,255);
+  _assertPixel(canvas, 41,1, 0,255,0,255);
+  _assertPixel(canvas, 1,10, 255,0,0,255);
+  _assertPixel(canvas, 1,21, 0,255,0,255);
+
+  // bottom-right corner
+  _assertPixel(canvas, 79,48, 255,0,0,255);
+  _assertPixel(canvas, 58,48, 0,255,0,255);
+  _assertPixel(canvas, 98,39, 255,0,0,255);
+  _assertPixel(canvas, 98,28, 0,255,0,255);
+
+  // other corners
+  _assertPixel(canvas, 98,1, 0,255,0,255);
+  _assertPixel(canvas, 1,48, 0,255,0,255);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.2.radii.1.double.html b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.2.radii.1.double.html
new file mode 100644
index 0000000000..791e59ee7e
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.2.radii.1.double.html
@@ -0,0 +1,35 @@
+
+
+OffscreenCanvas test: 2d.path.roundrect.2.radii.1.double
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.path.roundrect.2.radii.1.double
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Verify that when two radii are given to roundRect(), the first radius, specified as a double, applies to the top-left and bottom-right corners.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.2.radii.1.double.worker.js b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.2.radii.1.double.worker.js
new file mode 100644
index 0000000000..0fc351c3d6
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.2.radii.1.double.worker.js
@@ -0,0 +1,30 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.path.roundrect.2.radii.1.double
+// Description:Verify that when two radii are given to roundRect(), the first radius, specified as a double, applies to the top-left and bottom-right corners.
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("Verify that when two radii are given to roundRect(), the first radius, specified as a double, applies to the top-left and bottom-right corners.");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#f00';
+  ctx.fillRect(0, 0, 100, 50);
+  ctx.roundRect(0, 0, 100, 50, [20, 0]);
+  ctx.fillStyle = '#0f0';
+  ctx.fill();
+  _assertPixel(canvas, 1,1, 255,0,0,255);
+  _assertPixel(canvas, 98,1, 0,255,0,255);
+  _assertPixel(canvas, 98,48, 255,0,0,255);
+  _assertPixel(canvas, 1,48, 0,255,0,255);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.2.radii.2.dompoint.html b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.2.radii.2.dompoint.html
new file mode 100644
index 0000000000..d0b085e170
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.2.radii.2.dompoint.html
@@ -0,0 +1,47 @@
+
+
+OffscreenCanvas test: 2d.path.roundrect.2.radii.2.dompoint
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.path.roundrect.2.radii.2.dompoint
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Verify that when two radii are given to roundRect(), the second radius, specified as a DOMPoint, applies to the top-right and bottom-left corners.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.2.radii.2.dompoint.worker.js b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.2.radii.2.dompoint.worker.js
new file mode 100644
index 0000000000..4c6bb06bdb
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.2.radii.2.dompoint.worker.js
@@ -0,0 +1,42 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.path.roundrect.2.radii.2.dompoint
+// Description:Verify that when two radii are given to roundRect(), the second radius, specified as a DOMPoint, applies to the top-right and bottom-left corners.
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("Verify that when two radii are given to roundRect(), the second radius, specified as a DOMPoint, applies to the top-right and bottom-left corners.");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#f00';
+  ctx.fillRect(0, 0, 100, 50);
+  ctx.roundRect(0, 0, 100, 50, [0, new DOMPoint(40, 20)]);
+  ctx.fillStyle = '#0f0';
+  ctx.fill();
+
+  // top-right corner
+  _assertPixel(canvas, 79,1, 255,0,0,255);
+  _assertPixel(canvas, 58,1, 0,255,0,255);
+  _assertPixel(canvas, 98,10, 255,0,0,255);
+  _assertPixel(canvas, 98,21, 0,255,0,255);
+
+  // bottom-left corner
+  _assertPixel(canvas, 20,48, 255,0,0,255);
+  _assertPixel(canvas, 41,48, 0,255,0,255);
+  _assertPixel(canvas, 1,39, 255,0,0,255);
+  _assertPixel(canvas, 1,28, 0,255,0,255);
+
+  // other corners
+  _assertPixel(canvas, 1,1, 0,255,0,255);
+  _assertPixel(canvas, 98,48, 0,255,0,255);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.2.radii.2.dompointinit.html b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.2.radii.2.dompointinit.html
new file mode 100644
index 0000000000..380dd26997
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.2.radii.2.dompointinit.html
@@ -0,0 +1,47 @@
+
+
+OffscreenCanvas test: 2d.path.roundrect.2.radii.2.dompointinit
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.path.roundrect.2.radii.2.dompointinit
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Verify that when two radii are given to roundRect(), the second radius, specified as a DOMPointInit, applies to the top-right and bottom-left corners.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.2.radii.2.dompointinit.worker.js b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.2.radii.2.dompointinit.worker.js
new file mode 100644
index 0000000000..e8cdd2c015
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.2.radii.2.dompointinit.worker.js
@@ -0,0 +1,42 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.path.roundrect.2.radii.2.dompointinit
+// Description:Verify that when two radii are given to roundRect(), the second radius, specified as a DOMPointInit, applies to the top-right and bottom-left corners.
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("Verify that when two radii are given to roundRect(), the second radius, specified as a DOMPointInit, applies to the top-right and bottom-left corners.");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#f00';
+  ctx.fillRect(0, 0, 100, 50);
+  ctx.roundRect(0, 0, 100, 50, [0, {x: 40, y: 20}]);
+  ctx.fillStyle = '#0f0';
+  ctx.fill();
+
+  // top-right corner
+  _assertPixel(canvas, 79,1, 255,0,0,255);
+  _assertPixel(canvas, 58,1, 0,255,0,255);
+  _assertPixel(canvas, 98,10, 255,0,0,255);
+  _assertPixel(canvas, 98,21, 0,255,0,255);
+
+  // bottom-left corner
+  _assertPixel(canvas, 20,48, 255,0,0,255);
+  _assertPixel(canvas, 41,48, 0,255,0,255);
+  _assertPixel(canvas, 1,39, 255,0,0,255);
+  _assertPixel(canvas, 1,28, 0,255,0,255);
+
+  // other corners
+  _assertPixel(canvas, 1,1, 0,255,0,255);
+  _assertPixel(canvas, 98,48, 0,255,0,255);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.2.radii.2.double.html b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.2.radii.2.double.html
new file mode 100644
index 0000000000..b7b25727b9
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.2.radii.2.double.html
@@ -0,0 +1,35 @@
+
+
+OffscreenCanvas test: 2d.path.roundrect.2.radii.2.double
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.path.roundrect.2.radii.2.double
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Verify that when two radii are given to roundRect(), the second radius, specified as a double, applies to the top-right and bottom-left corners.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.2.radii.2.double.worker.js b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.2.radii.2.double.worker.js
new file mode 100644
index 0000000000..756328682d
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.2.radii.2.double.worker.js
@@ -0,0 +1,30 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.path.roundrect.2.radii.2.double
+// Description:Verify that when two radii are given to roundRect(), the second radius, specified as a double, applies to the top-right and bottom-left corners.
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("Verify that when two radii are given to roundRect(), the second radius, specified as a double, applies to the top-right and bottom-left corners.");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#f00';
+  ctx.fillRect(0, 0, 100, 50);
+  ctx.roundRect(0, 0, 100, 50, [0, 20]);
+  ctx.fillStyle = '#0f0';
+  ctx.fill();
+  _assertPixel(canvas, 1,1, 0,255,0,255);
+  _assertPixel(canvas, 98,1, 255,0,0,255);
+  _assertPixel(canvas, 98,48, 0,255,0,255);
+  _assertPixel(canvas, 1,48, 255,0,0,255);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.3.radii.1.dompoint.html b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.3.radii.1.dompoint.html
new file mode 100644
index 0000000000..b7f3e53261
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.3.radii.1.dompoint.html
@@ -0,0 +1,42 @@
+
+
+OffscreenCanvas test: 2d.path.roundrect.3.radii.1.dompoint
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.path.roundrect.3.radii.1.dompoint
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Verify that when three radii are given to roundRect(), the first radius, specified as a DOMPoint, applies to the top-left corner.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.3.radii.1.dompoint.worker.js b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.3.radii.1.dompoint.worker.js
new file mode 100644
index 0000000000..9ac4d731c3
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.3.radii.1.dompoint.worker.js
@@ -0,0 +1,37 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.path.roundrect.3.radii.1.dompoint
+// Description:Verify that when three radii are given to roundRect(), the first radius, specified as a DOMPoint, applies to the top-left corner.
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("Verify that when three radii are given to roundRect(), the first radius, specified as a DOMPoint, applies to the top-left corner.");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#f00';
+  ctx.fillRect(0, 0, 100, 50);
+  ctx.roundRect(0, 0, 100, 50, [new DOMPoint(40, 20), 0, 0]);
+  ctx.fillStyle = '#0f0';
+  ctx.fill();
+
+  // top-left corner
+  _assertPixel(canvas, 20,1, 255,0,0,255);
+  _assertPixel(canvas, 41,1, 0,255,0,255);
+  _assertPixel(canvas, 1,10, 255,0,0,255);
+  _assertPixel(canvas, 1,21, 0,255,0,255);
+
+  // other corners
+  _assertPixel(canvas, 98,1, 0,255,0,255);
+  _assertPixel(canvas, 98,48, 0,255,0,255);
+  _assertPixel(canvas, 1,48, 0,255,0,255);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.3.radii.1.dompointinit.html b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.3.radii.1.dompointinit.html
new file mode 100644
index 0000000000..93f89159b1
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.3.radii.1.dompointinit.html
@@ -0,0 +1,42 @@
+
+
+OffscreenCanvas test: 2d.path.roundrect.3.radii.1.dompointinit
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.path.roundrect.3.radii.1.dompointinit
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Verify that when three radii are given to roundRect(), the first radius, specified as a DOMPointInit, applies to the top-left corner.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.3.radii.1.dompointinit.worker.js b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.3.radii.1.dompointinit.worker.js
new file mode 100644
index 0000000000..9d00729ce9
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.3.radii.1.dompointinit.worker.js
@@ -0,0 +1,37 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.path.roundrect.3.radii.1.dompointinit
+// Description:Verify that when three radii are given to roundRect(), the first radius, specified as a DOMPointInit, applies to the top-left corner.
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("Verify that when three radii are given to roundRect(), the first radius, specified as a DOMPointInit, applies to the top-left corner.");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#f00';
+  ctx.fillRect(0, 0, 100, 50);
+  ctx.roundRect(0, 0, 100, 50, [{x: 40, y: 20}, 0, 0]);
+  ctx.fillStyle = '#0f0';
+  ctx.fill();
+
+  // top-left corner
+  _assertPixel(canvas, 20,1, 255,0,0,255);
+  _assertPixel(canvas, 41,1, 0,255,0,255);
+  _assertPixel(canvas, 1,10, 255,0,0,255);
+  _assertPixel(canvas, 1,21, 0,255,0,255);
+
+  // other corners
+  _assertPixel(canvas, 98,1, 0,255,0,255);
+  _assertPixel(canvas, 98,48, 0,255,0,255);
+  _assertPixel(canvas, 1,48, 0,255,0,255);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.3.radii.1.double.html b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.3.radii.1.double.html
new file mode 100644
index 0000000000..976458bc5f
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.3.radii.1.double.html
@@ -0,0 +1,35 @@
+
+
+OffscreenCanvas test: 2d.path.roundrect.3.radii.1.double
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.path.roundrect.3.radii.1.double
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Verify that when three radii are given to roundRect(), the first radius, specified as a double, applies to the top-left corner.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.3.radii.1.double.worker.js b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.3.radii.1.double.worker.js
new file mode 100644
index 0000000000..c4e1c4fc03
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.3.radii.1.double.worker.js
@@ -0,0 +1,30 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.path.roundrect.3.radii.1.double
+// Description:Verify that when three radii are given to roundRect(), the first radius, specified as a double, applies to the top-left corner.
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("Verify that when three radii are given to roundRect(), the first radius, specified as a double, applies to the top-left corner.");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#f00';
+  ctx.fillRect(0, 0, 100, 50);
+  ctx.roundRect(0, 0, 100, 50, [20, 0, 0]);
+  ctx.fillStyle = '#0f0';
+  ctx.fill();
+  _assertPixel(canvas, 1,1, 255,0,0,255);
+  _assertPixel(canvas, 98,1, 0,255,0,255);
+  _assertPixel(canvas, 98,48, 0,255,0,255);
+  _assertPixel(canvas, 1,48, 0,255,0,255);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.3.radii.2.dompoint.html b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.3.radii.2.dompoint.html
new file mode 100644
index 0000000000..1a89c28d15
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.3.radii.2.dompoint.html
@@ -0,0 +1,47 @@
+
+
+OffscreenCanvas test: 2d.path.roundrect.3.radii.2.dompoint
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.path.roundrect.3.radii.2.dompoint
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Verify that when three radii are given to roundRect(), the second radius, specified as a DOMPoint, applies to the top-right and bottom-left corners.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.3.radii.2.dompoint.worker.js b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.3.radii.2.dompoint.worker.js
new file mode 100644
index 0000000000..4e4df3a601
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.3.radii.2.dompoint.worker.js
@@ -0,0 +1,42 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.path.roundrect.3.radii.2.dompoint
+// Description:Verify that when three radii are given to roundRect(), the second radius, specified as a DOMPoint, applies to the top-right and bottom-left corners.
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("Verify that when three radii are given to roundRect(), the second radius, specified as a DOMPoint, applies to the top-right and bottom-left corners.");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#f00';
+  ctx.fillRect(0, 0, 100, 50);
+  ctx.roundRect(0, 0, 100, 50, [0, new DOMPoint(40, 20), 0]);
+  ctx.fillStyle = '#0f0';
+  ctx.fill();
+
+  // top-right corner
+  _assertPixel(canvas, 79,1, 255,0,0,255);
+  _assertPixel(canvas, 58,1, 0,255,0,255);
+  _assertPixel(canvas, 98,10, 255,0,0,255);
+  _assertPixel(canvas, 98,21, 0,255,0,255);
+
+  // bottom-left corner
+  _assertPixel(canvas, 20,48, 255,0,0,255);
+  _assertPixel(canvas, 41,48, 0,255,0,255);
+  _assertPixel(canvas, 1,39, 255,0,0,255);
+  _assertPixel(canvas, 1,28, 0,255,0,255);
+
+  // other corners
+  _assertPixel(canvas, 1,1, 0,255,0,255);
+  _assertPixel(canvas, 98,48, 0,255,0,255);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.3.radii.2.dompointinit.html b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.3.radii.2.dompointinit.html
new file mode 100644
index 0000000000..82ceb6a7bc
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.3.radii.2.dompointinit.html
@@ -0,0 +1,47 @@
+
+
+OffscreenCanvas test: 2d.path.roundrect.3.radii.2.dompointinit
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.path.roundrect.3.radii.2.dompointinit
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Verify that when three radii are given to roundRect(), the second radius, specified as a DOMPoint, applies to the top-right and bottom-left corners.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.3.radii.2.dompointinit.worker.js b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.3.radii.2.dompointinit.worker.js
new file mode 100644
index 0000000000..1333e2386d
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.3.radii.2.dompointinit.worker.js
@@ -0,0 +1,42 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.path.roundrect.3.radii.2.dompointinit
+// Description:Verify that when three radii are given to roundRect(), the second radius, specified as a DOMPoint, applies to the top-right and bottom-left corners.
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("Verify that when three radii are given to roundRect(), the second radius, specified as a DOMPoint, applies to the top-right and bottom-left corners.");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#f00';
+  ctx.fillRect(0, 0, 100, 50);
+  ctx.roundRect(0, 0, 100, 50, [0, {x: 40, y: 20}, 0]);
+  ctx.fillStyle = '#0f0';
+  ctx.fill();
+
+  // top-right corner
+  _assertPixel(canvas, 79,1, 255,0,0,255);
+  _assertPixel(canvas, 58,1, 0,255,0,255);
+  _assertPixel(canvas, 98,10, 255,0,0,255);
+  _assertPixel(canvas, 98,21, 0,255,0,255);
+
+  // bottom-left corner
+  _assertPixel(canvas, 20,48, 255,0,0,255);
+  _assertPixel(canvas, 41,48, 0,255,0,255);
+  _assertPixel(canvas, 1,39, 255,0,0,255);
+  _assertPixel(canvas, 1,28, 0,255,0,255);
+
+  // other corners
+  _assertPixel(canvas, 1,1, 0,255,0,255);
+  _assertPixel(canvas, 98,48, 0,255,0,255);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.3.radii.2.double.html b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.3.radii.2.double.html
new file mode 100644
index 0000000000..b466956d58
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.3.radii.2.double.html
@@ -0,0 +1,35 @@
+
+
+OffscreenCanvas test: 2d.path.roundrect.3.radii.2.double
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.path.roundrect.3.radii.2.double
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Verify that when three radii are given to roundRect(), the second radius, specified as a double, applies to the top-right and bottom-left corners.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.3.radii.2.double.worker.js b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.3.radii.2.double.worker.js
new file mode 100644
index 0000000000..027dbae52a
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.3.radii.2.double.worker.js
@@ -0,0 +1,30 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.path.roundrect.3.radii.2.double
+// Description:Verify that when three radii are given to roundRect(), the second radius, specified as a double, applies to the top-right and bottom-left corners.
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("Verify that when three radii are given to roundRect(), the second radius, specified as a double, applies to the top-right and bottom-left corners.");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#f00';
+  ctx.fillRect(0, 0, 100, 50);
+  ctx.roundRect(0, 0, 100, 50, [0, 20, 0]);
+  ctx.fillStyle = '#0f0';
+  ctx.fill();
+  _assertPixel(canvas, 1,1, 0,255,0,255);
+  _assertPixel(canvas, 98,1, 255,0,0,255);
+  _assertPixel(canvas, 98,48, 0,255,0,255);
+  _assertPixel(canvas, 1,48, 255,0,0,255);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.3.radii.3.dompoint.html b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.3.radii.3.dompoint.html
new file mode 100644
index 0000000000..897aeb2685
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.3.radii.3.dompoint.html
@@ -0,0 +1,42 @@
+
+
+OffscreenCanvas test: 2d.path.roundrect.3.radii.3.dompoint
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.path.roundrect.3.radii.3.dompoint
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Verify that when three radii are given to roundRect(), the third radius, specified as a DOMPoint, applies to the bottom-right corner.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.3.radii.3.dompoint.worker.js b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.3.radii.3.dompoint.worker.js
new file mode 100644
index 0000000000..8a80623fc9
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.3.radii.3.dompoint.worker.js
@@ -0,0 +1,37 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.path.roundrect.3.radii.3.dompoint
+// Description:Verify that when three radii are given to roundRect(), the third radius, specified as a DOMPoint, applies to the bottom-right corner.
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("Verify that when three radii are given to roundRect(), the third radius, specified as a DOMPoint, applies to the bottom-right corner.");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#f00';
+  ctx.fillRect(0, 0, 100, 50);
+  ctx.roundRect(0, 0, 100, 50, [0, 0, new DOMPoint(40, 20)]);
+  ctx.fillStyle = '#0f0';
+  ctx.fill();
+
+  // bottom-right corner
+  _assertPixel(canvas, 79,48, 255,0,0,255);
+  _assertPixel(canvas, 58,48, 0,255,0,255);
+  _assertPixel(canvas, 98,39, 255,0,0,255);
+  _assertPixel(canvas, 98,28, 0,255,0,255);
+
+  // other corners
+  _assertPixel(canvas, 1,1, 0,255,0,255);
+  _assertPixel(canvas, 98,1, 0,255,0,255);
+  _assertPixel(canvas, 1,48, 0,255,0,255);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.3.radii.3.dompointinit.html b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.3.radii.3.dompointinit.html
new file mode 100644
index 0000000000..e1e055cb64
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.3.radii.3.dompointinit.html
@@ -0,0 +1,42 @@
+
+
+OffscreenCanvas test: 2d.path.roundrect.3.radii.3.dompointinit
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.path.roundrect.3.radii.3.dompointinit
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Verify that when three radii are given to roundRect(), the third radius, specified as a DOMPointInit, applies to the bottom-right corner.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.3.radii.3.dompointinit.worker.js b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.3.radii.3.dompointinit.worker.js
new file mode 100644
index 0000000000..d3b188dd7f
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.3.radii.3.dompointinit.worker.js
@@ -0,0 +1,37 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.path.roundrect.3.radii.3.dompointinit
+// Description:Verify that when three radii are given to roundRect(), the third radius, specified as a DOMPointInit, applies to the bottom-right corner.
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("Verify that when three radii are given to roundRect(), the third radius, specified as a DOMPointInit, applies to the bottom-right corner.");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#f00';
+  ctx.fillRect(0, 0, 100, 50);
+  ctx.roundRect(0, 0, 100, 50, [0, 0, {x: 40, y: 20}]);
+  ctx.fillStyle = '#0f0';
+  ctx.fill();
+
+  // bottom-right corner
+  _assertPixel(canvas, 79,48, 255,0,0,255);
+  _assertPixel(canvas, 58,48, 0,255,0,255);
+  _assertPixel(canvas, 98,39, 255,0,0,255);
+  _assertPixel(canvas, 98,28, 0,255,0,255);
+
+  // other corners
+  _assertPixel(canvas, 1,1, 0,255,0,255);
+  _assertPixel(canvas, 98,1, 0,255,0,255);
+  _assertPixel(canvas, 1,48, 0,255,0,255);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.3.radii.3.double.html b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.3.radii.3.double.html
new file mode 100644
index 0000000000..a0e0553364
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.3.radii.3.double.html
@@ -0,0 +1,35 @@
+
+
+OffscreenCanvas test: 2d.path.roundrect.3.radii.3.double
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.path.roundrect.3.radii.3.double
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Verify that when three radii are given to roundRect(), the third radius, specified as a double, applies to the bottom-right corner.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.3.radii.3.double.worker.js b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.3.radii.3.double.worker.js
new file mode 100644
index 0000000000..177e7c5f6d
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.3.radii.3.double.worker.js
@@ -0,0 +1,30 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.path.roundrect.3.radii.3.double
+// Description:Verify that when three radii are given to roundRect(), the third radius, specified as a double, applies to the bottom-right corner.
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("Verify that when three radii are given to roundRect(), the third radius, specified as a double, applies to the bottom-right corner.");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#f00';
+  ctx.fillRect(0, 0, 100, 50);
+  ctx.roundRect(0, 0, 100, 50, [0, 0, 20]);
+  ctx.fillStyle = '#0f0';
+  ctx.fill();
+  _assertPixel(canvas, 1,1, 0,255,0,255);
+  _assertPixel(canvas, 98,1, 0,255,0,255);
+  _assertPixel(canvas, 98,48, 255,0,0,255);
+  _assertPixel(canvas, 1,48, 0,255,0,255);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.4.radii.1.dompoint.html b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.4.radii.1.dompoint.html
new file mode 100644
index 0000000000..72e8d6ce33
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.4.radii.1.dompoint.html
@@ -0,0 +1,42 @@
+
+
+OffscreenCanvas test: 2d.path.roundrect.4.radii.1.dompoint
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.path.roundrect.4.radii.1.dompoint
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Verify that when four radii are given to roundRect(), the first radius, specified as a DOMPoint, applies to the top-left corner.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.4.radii.1.dompoint.worker.js b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.4.radii.1.dompoint.worker.js
new file mode 100644
index 0000000000..f27f696f1c
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.4.radii.1.dompoint.worker.js
@@ -0,0 +1,37 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.path.roundrect.4.radii.1.dompoint
+// Description:Verify that when four radii are given to roundRect(), the first radius, specified as a DOMPoint, applies to the top-left corner.
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("Verify that when four radii are given to roundRect(), the first radius, specified as a DOMPoint, applies to the top-left corner.");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#f00';
+  ctx.fillRect(0, 0, 100, 50);
+  ctx.roundRect(0, 0, 100, 50, [new DOMPoint(40, 20), 0, 0, 0]);
+  ctx.fillStyle = '#0f0';
+  ctx.fill();
+
+  // top-left corner
+  _assertPixel(canvas, 20,1, 255,0,0,255);
+  _assertPixel(canvas, 41,1, 0,255,0,255);
+  _assertPixel(canvas, 1,10, 255,0,0,255);
+  _assertPixel(canvas, 1,21, 0,255,0,255);
+
+  // other corners
+  _assertPixel(canvas, 98,1, 0,255,0,255);
+  _assertPixel(canvas, 98,48, 0,255,0,255);
+  _assertPixel(canvas, 1,48, 0,255,0,255);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.4.radii.1.dompointinit.html b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.4.radii.1.dompointinit.html
new file mode 100644
index 0000000000..df6bb11e02
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.4.radii.1.dompointinit.html
@@ -0,0 +1,42 @@
+
+
+OffscreenCanvas test: 2d.path.roundrect.4.radii.1.dompointinit
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.path.roundrect.4.radii.1.dompointinit
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Verify that when four radii are given to roundRect(), the first radius, specified as a DOMPointInit, applies to the top-left corner.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.4.radii.1.dompointinit.worker.js b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.4.radii.1.dompointinit.worker.js
new file mode 100644
index 0000000000..2f9d2eb30f
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.4.radii.1.dompointinit.worker.js
@@ -0,0 +1,37 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.path.roundrect.4.radii.1.dompointinit
+// Description:Verify that when four radii are given to roundRect(), the first radius, specified as a DOMPointInit, applies to the top-left corner.
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("Verify that when four radii are given to roundRect(), the first radius, specified as a DOMPointInit, applies to the top-left corner.");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#f00';
+  ctx.fillRect(0, 0, 100, 50);
+  ctx.roundRect(0, 0, 100, 50, [{x: 40, y: 20}, 0, 0, 0]);
+  ctx.fillStyle = '#0f0';
+  ctx.fill();
+
+  // top-left corner
+  _assertPixel(canvas, 20,1, 255,0,0,255);
+  _assertPixel(canvas, 41,1, 0,255,0,255);
+  _assertPixel(canvas, 1,10, 255,0,0,255);
+  _assertPixel(canvas, 1,21, 0,255,0,255);
+
+  // other corners
+  _assertPixel(canvas, 98,1, 0,255,0,255);
+  _assertPixel(canvas, 98,48, 0,255,0,255);
+  _assertPixel(canvas, 1,48, 0,255,0,255);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.4.radii.1.double.html b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.4.radii.1.double.html
new file mode 100644
index 0000000000..b669a7bb6a
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.4.radii.1.double.html
@@ -0,0 +1,35 @@
+
+
+OffscreenCanvas test: 2d.path.roundrect.4.radii.1.double
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.path.roundrect.4.radii.1.double
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Verify that when four radii are given to roundRect(), the first radius, specified as a double, applies to the top-left corner.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.4.radii.1.double.worker.js b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.4.radii.1.double.worker.js
new file mode 100644
index 0000000000..9658a39cfb
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.4.radii.1.double.worker.js
@@ -0,0 +1,30 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.path.roundrect.4.radii.1.double
+// Description:Verify that when four radii are given to roundRect(), the first radius, specified as a double, applies to the top-left corner.
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("Verify that when four radii are given to roundRect(), the first radius, specified as a double, applies to the top-left corner.");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#f00';
+  ctx.fillRect(0, 0, 100, 50);
+  ctx.roundRect(0, 0, 100, 50, [20, 0, 0, 0]);
+  ctx.fillStyle = '#0f0';
+  ctx.fill();
+  _assertPixel(canvas, 1,1, 255,0,0,255);
+  _assertPixel(canvas, 98,1, 0,255,0,255);
+  _assertPixel(canvas, 98,48, 0,255,0,255);
+  _assertPixel(canvas, 1,48, 0,255,0,255);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.4.radii.2.dompoint.html b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.4.radii.2.dompoint.html
new file mode 100644
index 0000000000..b387d88990
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.4.radii.2.dompoint.html
@@ -0,0 +1,42 @@
+
+
+OffscreenCanvas test: 2d.path.roundrect.4.radii.2.dompoint
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.path.roundrect.4.radii.2.dompoint
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Verify that when four radii are given to roundRect(), the second radius, specified as a DOMPoint, applies to the top-right corner.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.4.radii.2.dompoint.worker.js b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.4.radii.2.dompoint.worker.js
new file mode 100644
index 0000000000..83d3f66b3c
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.4.radii.2.dompoint.worker.js
@@ -0,0 +1,37 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.path.roundrect.4.radii.2.dompoint
+// Description:Verify that when four radii are given to roundRect(), the second radius, specified as a DOMPoint, applies to the top-right corner.
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("Verify that when four radii are given to roundRect(), the second radius, specified as a DOMPoint, applies to the top-right corner.");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#f00';
+  ctx.fillRect(0, 0, 100, 50);
+  ctx.roundRect(0, 0, 100, 50, [0, new DOMPoint(40, 20), 0, 0]);
+  ctx.fillStyle = '#0f0';
+  ctx.fill();
+
+  // top-right corner
+  _assertPixel(canvas, 79,1, 255,0,0,255);
+  _assertPixel(canvas, 58,1, 0,255,0,255);
+  _assertPixel(canvas, 98,10, 255,0,0,255);
+  _assertPixel(canvas, 98,21, 0,255,0,255);
+
+  // other corners
+  _assertPixel(canvas, 1,1, 0,255,0,255);
+  _assertPixel(canvas, 98,48, 0,255,0,255);
+  _assertPixel(canvas, 1,48, 0,255,0,255);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.4.radii.2.dompointinit.html b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.4.radii.2.dompointinit.html
new file mode 100644
index 0000000000..76719124e2
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.4.radii.2.dompointinit.html
@@ -0,0 +1,42 @@
+
+
+OffscreenCanvas test: 2d.path.roundrect.4.radii.2.dompointinit
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.path.roundrect.4.radii.2.dompointinit
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Verify that when four radii are given to roundRect(), the second radius, specified as a DOMPointInit, applies to the top-right corner.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.4.radii.2.dompointinit.worker.js b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.4.radii.2.dompointinit.worker.js
new file mode 100644
index 0000000000..21766040b4
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.4.radii.2.dompointinit.worker.js
@@ -0,0 +1,37 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.path.roundrect.4.radii.2.dompointinit
+// Description:Verify that when four radii are given to roundRect(), the second radius, specified as a DOMPointInit, applies to the top-right corner.
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("Verify that when four radii are given to roundRect(), the second radius, specified as a DOMPointInit, applies to the top-right corner.");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#f00';
+  ctx.fillRect(0, 0, 100, 50);
+  ctx.roundRect(0, 0, 100, 50, [0, {x: 40, y: 20}, 0, 0]);
+  ctx.fillStyle = '#0f0';
+  ctx.fill();
+
+  // top-right corner
+  _assertPixel(canvas, 79,1, 255,0,0,255);
+  _assertPixel(canvas, 58,1, 0,255,0,255);
+  _assertPixel(canvas, 98,10, 255,0,0,255);
+  _assertPixel(canvas, 98,21, 0,255,0,255);
+
+  // other corners
+  _assertPixel(canvas, 1,1, 0,255,0,255);
+  _assertPixel(canvas, 98,48, 0,255,0,255);
+  _assertPixel(canvas, 1,48, 0,255,0,255);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.4.radii.2.double.html b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.4.radii.2.double.html
new file mode 100644
index 0000000000..001cb8429c
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.4.radii.2.double.html
@@ -0,0 +1,35 @@
+
+
+OffscreenCanvas test: 2d.path.roundrect.4.radii.2.double
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.path.roundrect.4.radii.2.double
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Verify that when four radii are given to roundRect(), the second radius, specified as a double, applies to the top-right corner.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.4.radii.2.double.worker.js b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.4.radii.2.double.worker.js
new file mode 100644
index 0000000000..b9935a1bd9
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.4.radii.2.double.worker.js
@@ -0,0 +1,30 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.path.roundrect.4.radii.2.double
+// Description:Verify that when four radii are given to roundRect(), the second radius, specified as a double, applies to the top-right corner.
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("Verify that when four radii are given to roundRect(), the second radius, specified as a double, applies to the top-right corner.");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#f00';
+  ctx.fillRect(0, 0, 100, 50);
+  ctx.roundRect(0, 0, 100, 50, [0, 20, 0, 0]);
+  ctx.fillStyle = '#0f0';
+  ctx.fill();
+  _assertPixel(canvas, 1,1, 0,255,0,255);
+  _assertPixel(canvas, 98,1, 255,0,0,255);
+  _assertPixel(canvas, 98,48, 0,255,0,255);
+  _assertPixel(canvas, 1,48, 0,255,0,255);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.4.radii.3.dompoint.html b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.4.radii.3.dompoint.html
new file mode 100644
index 0000000000..5c8c686086
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.4.radii.3.dompoint.html
@@ -0,0 +1,42 @@
+
+
+OffscreenCanvas test: 2d.path.roundrect.4.radii.3.dompoint
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.path.roundrect.4.radii.3.dompoint
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Verify that when four radii are given to roundRect(), the third radius, specified as a DOMPoint, applies to the bottom-right corner.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.4.radii.3.dompoint.worker.js b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.4.radii.3.dompoint.worker.js
new file mode 100644
index 0000000000..819b1a3986
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.4.radii.3.dompoint.worker.js
@@ -0,0 +1,37 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.path.roundrect.4.radii.3.dompoint
+// Description:Verify that when four radii are given to roundRect(), the third radius, specified as a DOMPoint, applies to the bottom-right corner.
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("Verify that when four radii are given to roundRect(), the third radius, specified as a DOMPoint, applies to the bottom-right corner.");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#f00';
+  ctx.fillRect(0, 0, 100, 50);
+  ctx.roundRect(0, 0, 100, 50, [0, 0, new DOMPoint(40, 20), 0]);
+  ctx.fillStyle = '#0f0';
+  ctx.fill();
+
+  // bottom-right corner
+  _assertPixel(canvas, 79,48, 255,0,0,255);
+  _assertPixel(canvas, 58,48, 0,255,0,255);
+  _assertPixel(canvas, 98,39, 255,0,0,255);
+  _assertPixel(canvas, 98,28, 0,255,0,255);
+
+  // other corners
+  _assertPixel(canvas, 1,1, 0,255,0,255);
+  _assertPixel(canvas, 98,1, 0,255,0,255);
+  _assertPixel(canvas, 1,48, 0,255,0,255);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.4.radii.3.dompointinit.html b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.4.radii.3.dompointinit.html
new file mode 100644
index 0000000000..1b94b7d7ed
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.4.radii.3.dompointinit.html
@@ -0,0 +1,42 @@
+
+
+OffscreenCanvas test: 2d.path.roundrect.4.radii.3.dompointinit
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.path.roundrect.4.radii.3.dompointinit
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Verify that when four radii are given to roundRect(), the third radius, specified as a DOMPointInit, applies to the bottom-right corner.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.4.radii.3.dompointinit.worker.js b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.4.radii.3.dompointinit.worker.js
new file mode 100644
index 0000000000..e4bd04aa29
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.4.radii.3.dompointinit.worker.js
@@ -0,0 +1,37 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.path.roundrect.4.radii.3.dompointinit
+// Description:Verify that when four radii are given to roundRect(), the third radius, specified as a DOMPointInit, applies to the bottom-right corner.
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("Verify that when four radii are given to roundRect(), the third radius, specified as a DOMPointInit, applies to the bottom-right corner.");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#f00';
+  ctx.fillRect(0, 0, 100, 50);
+  ctx.roundRect(0, 0, 100, 50, [0, 0, {x: 40, y: 20}, 0]);
+  ctx.fillStyle = '#0f0';
+  ctx.fill();
+
+  // bottom-right corner
+  _assertPixel(canvas, 79,48, 255,0,0,255);
+  _assertPixel(canvas, 58,48, 0,255,0,255);
+  _assertPixel(canvas, 98,39, 255,0,0,255);
+  _assertPixel(canvas, 98,28, 0,255,0,255);
+
+  // other corners
+  _assertPixel(canvas, 1,1, 0,255,0,255);
+  _assertPixel(canvas, 98,1, 0,255,0,255);
+  _assertPixel(canvas, 1,48, 0,255,0,255);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.4.radii.3.double.html b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.4.radii.3.double.html
new file mode 100644
index 0000000000..2a76d2b7b1
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.4.radii.3.double.html
@@ -0,0 +1,35 @@
+
+
+OffscreenCanvas test: 2d.path.roundrect.4.radii.3.double
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.path.roundrect.4.radii.3.double
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Verify that when four radii are given to roundRect(), the third radius, specified as a double, applies to the bottom-right corner.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.4.radii.3.double.worker.js b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.4.radii.3.double.worker.js
new file mode 100644
index 0000000000..ada627b469
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.4.radii.3.double.worker.js
@@ -0,0 +1,30 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.path.roundrect.4.radii.3.double
+// Description:Verify that when four radii are given to roundRect(), the third radius, specified as a double, applies to the bottom-right corner.
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("Verify that when four radii are given to roundRect(), the third radius, specified as a double, applies to the bottom-right corner.");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#f00';
+  ctx.fillRect(0, 0, 100, 50);
+  ctx.roundRect(0, 0, 100, 50, [0, 0, 20, 0]);
+  ctx.fillStyle = '#0f0';
+  ctx.fill();
+  _assertPixel(canvas, 1,1, 0,255,0,255);
+  _assertPixel(canvas, 98,1, 0,255,0,255);
+  _assertPixel(canvas, 98,48, 255,0,0,255);
+  _assertPixel(canvas, 1,48, 0,255,0,255);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.4.radii.4.dompoint.html b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.4.radii.4.dompoint.html
new file mode 100644
index 0000000000..ce86e45e8b
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.4.radii.4.dompoint.html
@@ -0,0 +1,42 @@
+
+
+OffscreenCanvas test: 2d.path.roundrect.4.radii.4.dompoint
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.path.roundrect.4.radii.4.dompoint
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Verify that when four radii are given to roundRect(), the fourth radius, specified as a DOMPoint, applies to the bottom-left corner.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.4.radii.4.dompoint.worker.js b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.4.radii.4.dompoint.worker.js
new file mode 100644
index 0000000000..770291c6f9
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.4.radii.4.dompoint.worker.js
@@ -0,0 +1,37 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.path.roundrect.4.radii.4.dompoint
+// Description:Verify that when four radii are given to roundRect(), the fourth radius, specified as a DOMPoint, applies to the bottom-left corner.
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("Verify that when four radii are given to roundRect(), the fourth radius, specified as a DOMPoint, applies to the bottom-left corner.");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#f00';
+  ctx.fillRect(0, 0, 100, 50);
+  ctx.roundRect(0, 0, 100, 50, [0, 0, 0, new DOMPoint(40, 20)]);
+  ctx.fillStyle = '#0f0';
+  ctx.fill();
+
+  // bottom-left corner
+  _assertPixel(canvas, 20,48, 255,0,0,255);
+  _assertPixel(canvas, 41,48, 0,255,0,255);
+  _assertPixel(canvas, 1,39, 255,0,0,255);
+  _assertPixel(canvas, 1,28, 0,255,0,255);
+
+  // other corners
+  _assertPixel(canvas, 1,1, 0,255,0,255);
+  _assertPixel(canvas, 98,1, 0,255,0,255);
+  _assertPixel(canvas, 98,48, 0,255,0,255);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.4.radii.4.dompointinit.html b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.4.radii.4.dompointinit.html
new file mode 100644
index 0000000000..f0ec6c3b99
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.4.radii.4.dompointinit.html
@@ -0,0 +1,42 @@
+
+
+OffscreenCanvas test: 2d.path.roundrect.4.radii.4.dompointinit
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.path.roundrect.4.radii.4.dompointinit
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Verify that when four radii are given to roundRect(), the fourth radius, specified as a DOMPointInit, applies to the bottom-left corner.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.4.radii.4.dompointinit.worker.js b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.4.radii.4.dompointinit.worker.js
new file mode 100644
index 0000000000..48310c6a30
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.4.radii.4.dompointinit.worker.js
@@ -0,0 +1,37 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.path.roundrect.4.radii.4.dompointinit
+// Description:Verify that when four radii are given to roundRect(), the fourth radius, specified as a DOMPointInit, applies to the bottom-left corner.
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("Verify that when four radii are given to roundRect(), the fourth radius, specified as a DOMPointInit, applies to the bottom-left corner.");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#f00';
+  ctx.fillRect(0, 0, 100, 50);
+  ctx.roundRect(0, 0, 100, 50, [0, 0, 0, {x: 40, y: 20}]);
+  ctx.fillStyle = '#0f0';
+  ctx.fill();
+
+  // bottom-left corner
+  _assertPixel(canvas, 20,48, 255,0,0,255);
+  _assertPixel(canvas, 41,48, 0,255,0,255);
+  _assertPixel(canvas, 1,39, 255,0,0,255);
+  _assertPixel(canvas, 1,28, 0,255,0,255);
+
+  // other corners
+  _assertPixel(canvas, 1,1, 0,255,0,255);
+  _assertPixel(canvas, 98,1, 0,255,0,255);
+  _assertPixel(canvas, 98,48, 0,255,0,255);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.4.radii.4.double.html b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.4.radii.4.double.html
new file mode 100644
index 0000000000..6940622cf0
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.4.radii.4.double.html
@@ -0,0 +1,35 @@
+
+
+OffscreenCanvas test: 2d.path.roundrect.4.radii.4.double
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.path.roundrect.4.radii.4.double
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Verify that when four radii are given to roundRect(), the fourth radius, specified as a double, applies to the bottom-left corner.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.4.radii.4.double.worker.js b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.4.radii.4.double.worker.js
new file mode 100644
index 0000000000..e97ebd98ff
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.4.radii.4.double.worker.js
@@ -0,0 +1,30 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.path.roundrect.4.radii.4.double
+// Description:Verify that when four radii are given to roundRect(), the fourth radius, specified as a double, applies to the bottom-left corner.
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("Verify that when four radii are given to roundRect(), the fourth radius, specified as a double, applies to the bottom-left corner.");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#f00';
+  ctx.fillRect(0, 0, 100, 50);
+  ctx.roundRect(0, 0, 100, 50, [0, 0, 0, 20]);
+  ctx.fillStyle = '#0f0';
+  ctx.fill();
+  _assertPixel(canvas, 1,1, 0,255,0,255);
+  _assertPixel(canvas, 98,1, 0,255,0,255);
+  _assertPixel(canvas, 98,48, 0,255,0,255);
+  _assertPixel(canvas, 1,48, 255,0,0,255);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.badinput.html b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.badinput.html
new file mode 100644
index 0000000000..97b322971c
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.badinput.html
@@ -0,0 +1,34 @@
+
+
+OffscreenCanvas test: 2d.path.roundrect.badinput
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.path.roundrect.badinput
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              roundRect() throws or does not throw errors given the strange inputs.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.badinput.worker.js b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.badinput.worker.js
new file mode 100644
index 0000000000..461dee89ad
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.badinput.worker.js
@@ -0,0 +1,29 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.path.roundrect.badinput
+// Description:roundRect() throws or does not throw errors given the strange inputs.
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("roundRect() throws or does not throw errors given the strange inputs.");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.roundRect(0, 0, 100, 100, { foo: "bar" });  //=> DOMPointInit
+  ctx.roundRect(0, 0, 100, 100, undefined);       //=> "missing" -> 0
+  ctx.roundRect(0, 0, 100, 100, [[]]);            //=> « DOMPointInit »
+  ctx.roundRect(0, 0, 100, 100, [[25]]);          //=> « DOMPointInit »
+  ctx.roundRect(0, 0, 100, 100, [undefined]);     //=> « DOMPointInit »
+  assert_throws_js(TypeError, function() { ctx.roundRect(0, 0, 100, 100, 0n); });
+  assert_throws_js(TypeError, function() { ctx.roundRect(0, 0, 100, 100, { x: 0n }); });
+  assert_throws_js(TypeError, function() { ctx.roundRect(0, 0, 100, 100, [{ x: 0n }]); });
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.closed.html b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.closed.html
new file mode 100644
index 0000000000..7407ead9cf
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.closed.html
@@ -0,0 +1,34 @@
+
+
+OffscreenCanvas test: 2d.path.roundrect.closed
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.path.roundrect.closed
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.closed.worker.js b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.closed.worker.js
new file mode 100644
index 0000000000..5a9530a683
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.closed.worker.js
@@ -0,0 +1,29 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.path.roundrect.closed
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#f00';
+  ctx.fillRect(0, 0, 100, 50);
+  ctx.strokeStyle = '#0f0';
+  ctx.lineWidth = 200;
+  ctx.lineJoin = 'miter';
+  ctx.roundRect(100, 50, 100, 100, [0]);
+  ctx.stroke();
+  _assertPixel(canvas, 50,25, 0,255,0,255);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.end.1.html b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.end.1.html
new file mode 100644
index 0000000000..d73b82bee4
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.end.1.html
@@ -0,0 +1,34 @@
+
+
+OffscreenCanvas test: 2d.path.roundrect.end.1
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.path.roundrect.end.1
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.end.1.worker.js b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.end.1.worker.js
new file mode 100644
index 0000000000..9428df5bbd
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.end.1.worker.js
@@ -0,0 +1,29 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.path.roundrect.end.1
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#f00';
+  ctx.fillRect(0, 0, 100, 50);
+  ctx.strokeStyle = '#0f0';
+  ctx.lineWidth = 100;
+  ctx.roundRect(200, 100, 400, 1000, [0]);
+  ctx.lineTo(-2000, -1000);
+  ctx.stroke();
+  _assertPixel(canvas, 50,25, 0,255,0,255);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.end.2.html b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.end.2.html
new file mode 100644
index 0000000000..ce9b44ead1
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.end.2.html
@@ -0,0 +1,39 @@
+
+
+OffscreenCanvas test: 2d.path.roundrect.end.2
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.path.roundrect.end.2
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.end.2.worker.js b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.end.2.worker.js
new file mode 100644
index 0000000000..28f1ca1787
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.end.2.worker.js
@@ -0,0 +1,34 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.path.roundrect.end.2
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#f00';
+  ctx.fillRect(0, 0, 100, 50);
+  ctx.strokeStyle = '#0f0';
+  ctx.lineWidth = 450;
+  ctx.lineCap = 'round';
+  ctx.lineJoin = 'bevel';
+  ctx.roundRect(150, 150, 2000, 2000, [0]);
+  ctx.lineTo(160, 160);
+  ctx.stroke();
+  _assertPixel(canvas, 1,1, 0,255,0,255);
+  _assertPixel(canvas, 98,1, 0,255,0,255);
+  _assertPixel(canvas, 1,48, 0,255,0,255);
+  _assertPixel(canvas, 98,48, 0,255,0,255);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.end.3.html b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.end.3.html
new file mode 100644
index 0000000000..72183ecd05
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.end.3.html
@@ -0,0 +1,37 @@
+
+
+OffscreenCanvas test: 2d.path.roundrect.end.3
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.path.roundrect.end.3
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.end.3.worker.js b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.end.3.worker.js
new file mode 100644
index 0000000000..57cb328cfa
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.end.3.worker.js
@@ -0,0 +1,32 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.path.roundrect.end.3
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#f00';
+  ctx.fillRect(0, 0, 100, 50);
+  ctx.strokeStyle = '#0f0';
+  ctx.lineWidth = 100;
+  ctx.roundRect(101, 51, 2000, 2000, [500, 500, 500, 500]);
+  ctx.lineTo(-1, -1);
+  ctx.stroke();
+  _assertPixel(canvas, 1,1, 0,255,0,255);
+  _assertPixel(canvas, 98,1, 0,255,0,255);
+  _assertPixel(canvas, 1,48, 0,255,0,255);
+  _assertPixel(canvas, 98,48, 0,255,0,255);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.end.4.html b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.end.4.html
new file mode 100644
index 0000000000..c4fdee5958
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.end.4.html
@@ -0,0 +1,37 @@
+
+
+OffscreenCanvas test: 2d.path.roundrect.end.4
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.path.roundrect.end.4
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.end.4.worker.js b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.end.4.worker.js
new file mode 100644
index 0000000000..a97a37d157
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.end.4.worker.js
@@ -0,0 +1,32 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.path.roundrect.end.4
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#0f0';
+  ctx.fillRect(0, 0, 100, 50);
+  ctx.strokeStyle = '#f00';
+  ctx.lineWidth = 10;
+  ctx.roundRect(-1, -1, 2000, 2000, [1000, 1000, 1000, 1000]);
+  ctx.lineTo(-150, -150);
+  ctx.stroke();
+  _assertPixel(canvas, 1,1, 0,255,0,255);
+  _assertPixel(canvas, 98,1, 0,255,0,255);
+  _assertPixel(canvas, 1,48, 0,255,0,255);
+  _assertPixel(canvas, 98,48, 0,255,0,255);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.negative.html b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.negative.html
new file mode 100644
index 0000000000..aa83657244
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.negative.html
@@ -0,0 +1,45 @@
+
+
+OffscreenCanvas test: 2d.path.roundrect.negative
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.path.roundrect.negative
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.negative.worker.js b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.negative.worker.js
new file mode 100644
index 0000000000..14459238ed
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.negative.worker.js
@@ -0,0 +1,40 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.path.roundrect.negative
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#f00';
+  ctx.fillRect(0, 0, 100, 50);
+  ctx.beginPath();
+  ctx.fillStyle = '#0f0';
+  ctx.roundRect(0, 0, 50, 25, [10, 0, 0, 0]);
+  ctx.roundRect(100, 0, -50, 25, [10, 0, 0, 0]);
+  ctx.roundRect(0, 50, 50, -25, [10, 0, 0, 0]);
+  ctx.roundRect(100, 50, -50, -25, [10, 0, 0, 0]);
+  ctx.fill();
+  // All rects drawn
+  _assertPixel(canvas, 25,12, 0,255,0,255);
+  _assertPixel(canvas, 75,12, 0,255,0,255);
+  _assertPixel(canvas, 25,37, 0,255,0,255);
+  _assertPixel(canvas, 75,37, 0,255,0,255);
+  // Correct corners are rounded.
+  _assertPixel(canvas, 1,1, 255,0,0,255);
+  _assertPixel(canvas, 98,1, 255,0,0,255);
+  _assertPixel(canvas, 1,48, 255,0,0,255);
+  _assertPixel(canvas, 98,48, 255,0,0,255);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.newsubpath.html b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.newsubpath.html
new file mode 100644
index 0000000000..3ad7e5bb5b
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.newsubpath.html
@@ -0,0 +1,36 @@
+
+
+OffscreenCanvas test: 2d.path.roundrect.newsubpath
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.path.roundrect.newsubpath
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.newsubpath.worker.js b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.newsubpath.worker.js
new file mode 100644
index 0000000000..757327c60d
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.newsubpath.worker.js
@@ -0,0 +1,31 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.path.roundrect.newsubpath
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#0f0';
+  ctx.fillRect(0, 0, 100, 50);
+  ctx.beginPath();
+  ctx.strokeStyle = '#f00';
+  ctx.lineWidth = 50;
+  ctx.moveTo(-100, 25);
+  ctx.lineTo(-50, 25);
+  ctx.roundRect(200, 25, 1, 1, [0]);
+  ctx.stroke();
+  _assertPixel(canvas, 50,25, 0,255,0,255);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.nonfinite.html b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.nonfinite.html
new file mode 100644
index 0000000000..adddc7b9b8
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.nonfinite.html
@@ -0,0 +1,116 @@
+
+
+OffscreenCanvas test: 2d.path.roundrect.nonfinite
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.path.roundrect.nonfinite
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              roundRect() with Infinity/NaN is ignored
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.nonfinite.worker.js b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.nonfinite.worker.js
new file mode 100644
index 0000000000..d6d44d6ffe
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.nonfinite.worker.js
@@ -0,0 +1,111 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.path.roundrect.nonfinite
+// Description:roundRect() with Infinity/NaN is ignored
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("roundRect() with Infinity/NaN is ignored");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#f00';
+  ctx.fillRect(0, 0, 100, 50)
+  ctx.moveTo(0, 0);
+  ctx.lineTo(100, 0);
+  ctx.roundRect(Infinity, 50, 1, 1, [0]);
+  ctx.roundRect(-Infinity, 50, 1, 1, [0]);
+  ctx.roundRect(NaN, 50, 1, 1, [0]);
+  ctx.roundRect(0, Infinity, 1, 1, [0]);
+  ctx.roundRect(0, -Infinity, 1, 1, [0]);
+  ctx.roundRect(0, NaN, 1, 1, [0]);
+  ctx.roundRect(0, 50, Infinity, 1, [0]);
+  ctx.roundRect(0, 50, -Infinity, 1, [0]);
+  ctx.roundRect(0, 50, NaN, 1, [0]);
+  ctx.roundRect(0, 50, 1, Infinity, [0]);
+  ctx.roundRect(0, 50, 1, -Infinity, [0]);
+  ctx.roundRect(0, 50, 1, NaN, [0]);
+  ctx.roundRect(0, 50, 1, 1, [Infinity]);
+  ctx.roundRect(0, 50, 1, 1, [-Infinity]);
+  ctx.roundRect(0, 50, 1, 1, [NaN]);
+  ctx.roundRect(0, 50, 1, 1, [Infinity,0]);
+  ctx.roundRect(0, 50, 1, 1, [-Infinity,0]);
+  ctx.roundRect(0, 50, 1, 1, [NaN,0]);
+  ctx.roundRect(0, 50, 1, 1, [0,Infinity]);
+  ctx.roundRect(0, 50, 1, 1, [0,-Infinity]);
+  ctx.roundRect(0, 50, 1, 1, [0,NaN]);
+  ctx.roundRect(0, 50, 1, 1, [Infinity,0,0]);
+  ctx.roundRect(0, 50, 1, 1, [-Infinity,0,0]);
+  ctx.roundRect(0, 50, 1, 1, [NaN,0,0]);
+  ctx.roundRect(0, 50, 1, 1, [0,Infinity,0]);
+  ctx.roundRect(0, 50, 1, 1, [0,-Infinity,0]);
+  ctx.roundRect(0, 50, 1, 1, [0,NaN,0]);
+  ctx.roundRect(0, 50, 1, 1, [0,0,Infinity]);
+  ctx.roundRect(0, 50, 1, 1, [0,0,-Infinity]);
+  ctx.roundRect(0, 50, 1, 1, [0,0,NaN]);
+  ctx.roundRect(0, 50, 1, 1, [Infinity,0,0,0]);
+  ctx.roundRect(0, 50, 1, 1, [-Infinity,0,0,0]);
+  ctx.roundRect(0, 50, 1, 1, [NaN,0,0,0]);
+  ctx.roundRect(0, 50, 1, 1, [0,Infinity,0,0]);
+  ctx.roundRect(0, 50, 1, 1, [0,-Infinity,0,0]);
+  ctx.roundRect(0, 50, 1, 1, [0,NaN,0,0]);
+  ctx.roundRect(0, 50, 1, 1, [0,0,Infinity,0]);
+  ctx.roundRect(0, 50, 1, 1, [0,0,-Infinity,0]);
+  ctx.roundRect(0, 50, 1, 1, [0,0,NaN,0]);
+  ctx.roundRect(0, 50, 1, 1, [0,0,0,Infinity]);
+  ctx.roundRect(0, 50, 1, 1, [0,0,0,-Infinity]);
+  ctx.roundRect(0, 50, 1, 1, [0,0,0,NaN]);
+  ctx.roundRect(Infinity, Infinity, 1, 1, [0]);
+  ctx.roundRect(Infinity, Infinity, Infinity, 1, [0]);
+  ctx.roundRect(Infinity, Infinity, Infinity, Infinity, [0]);
+  ctx.roundRect(Infinity, Infinity, Infinity, Infinity, [Infinity]);
+  ctx.roundRect(Infinity, Infinity, Infinity, 1, [Infinity]);
+  ctx.roundRect(Infinity, Infinity, 1, Infinity, [0]);
+  ctx.roundRect(Infinity, Infinity, 1, Infinity, [Infinity]);
+  ctx.roundRect(Infinity, Infinity, 1, 1, [Infinity]);
+  ctx.roundRect(Infinity, 50, Infinity, 1, [0]);
+  ctx.roundRect(Infinity, 50, Infinity, Infinity, [0]);
+  ctx.roundRect(Infinity, 50, Infinity, Infinity, [Infinity]);
+  ctx.roundRect(Infinity, 50, Infinity, 1, [Infinity]);
+  ctx.roundRect(Infinity, 50, 1, Infinity, [0]);
+  ctx.roundRect(Infinity, 50, 1, Infinity, [Infinity]);
+  ctx.roundRect(Infinity, 50, 1, 1, [Infinity]);
+  ctx.roundRect(0, Infinity, Infinity, 1, [0]);
+  ctx.roundRect(0, Infinity, Infinity, Infinity, [0]);
+  ctx.roundRect(0, Infinity, Infinity, Infinity, [Infinity]);
+  ctx.roundRect(0, Infinity, Infinity, 1, [Infinity]);
+  ctx.roundRect(0, Infinity, 1, Infinity, [0]);
+  ctx.roundRect(0, Infinity, 1, Infinity, [Infinity]);
+  ctx.roundRect(0, Infinity, 1, 1, [Infinity]);
+  ctx.roundRect(0, 50, Infinity, Infinity, [0]);
+  ctx.roundRect(0, 50, Infinity, Infinity, [Infinity]);
+  ctx.roundRect(0, 50, Infinity, 1, [Infinity]);
+  ctx.roundRect(0, 50, 1, Infinity, [Infinity]);
+  ctx.roundRect(0, 0, 100, 100, [new DOMPoint(10, Infinity)]);
+  ctx.roundRect(0, 0, 100, 100, [new DOMPoint(10, -Infinity)]);
+  ctx.roundRect(0, 0, 100, 100, [new DOMPoint(10, NaN)]);
+  ctx.roundRect(0, 0, 100, 100, [new DOMPoint(Infinity, 10)]);
+  ctx.roundRect(0, 0, 100, 100, [new DOMPoint(-Infinity, 10)]);
+  ctx.roundRect(0, 0, 100, 100, [new DOMPoint(NaN, 10)]);
+  ctx.roundRect(0, 0, 100, 100, [{x: 10, y: Infinity}]);
+  ctx.roundRect(0, 0, 100, 100, [{x: 10, y: -Infinity}]);
+  ctx.roundRect(0, 0, 100, 100, [{x: 10, y: NaN}]);
+  ctx.roundRect(0, 0, 100, 100, [{x: Infinity, y: 10}]);
+  ctx.roundRect(0, 0, 100, 100, [{x: -Infinity, y: 10}]);
+  ctx.roundRect(0, 0, 100, 100, [{x: NaN, y: 10}]);
+  ctx.lineTo(100, 50);
+  ctx.lineTo(0, 50);
+  ctx.fillStyle = '#0f0';
+  ctx.fill();
+  _assertPixel(canvas, 50,25, 0,255,0,255);
+  _assertPixel(canvas, 90,45, 0,255,0,255);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.radius.intersecting.1.html b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.radius.intersecting.1.html
new file mode 100644
index 0000000000..db4d871f9f
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.radius.intersecting.1.html
@@ -0,0 +1,40 @@
+
+
+OffscreenCanvas test: 2d.path.roundrect.radius.intersecting.1
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.path.roundrect.radius.intersecting.1
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Check that roundRects with intersecting corner arcs are rendered correctly.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.radius.intersecting.1.worker.js b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.radius.intersecting.1.worker.js
new file mode 100644
index 0000000000..27076dbe21
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.radius.intersecting.1.worker.js
@@ -0,0 +1,35 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.path.roundrect.radius.intersecting.1
+// Description:Check that roundRects with intersecting corner arcs are rendered correctly.
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("Check that roundRects with intersecting corner arcs are rendered correctly.");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#f00';
+  ctx.fillRect(0, 0, 100, 50);
+  ctx.roundRect(0, 0, 100, 50, [40, 40, 40, 40]);
+  ctx.fillStyle = '#0f0';
+  ctx.fill();
+  _assertPixel(canvas, 2,25, 0,255,0,255);
+  _assertPixel(canvas, 50,1, 0,255,0,255);
+  _assertPixel(canvas, 50,25, 0,255,0,255);
+  _assertPixel(canvas, 50,48, 0,255,0,255);
+  _assertPixel(canvas, 97,25, 0,255,0,255);
+  _assertPixel(canvas, 1,1, 255,0,0,255);
+  _assertPixel(canvas, 98,1, 255,0,0,255);
+  _assertPixel(canvas, 1,48, 255,0,0,255);
+  _assertPixel(canvas, 98,48, 255,0,0,255);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.radius.intersecting.2.html b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.radius.intersecting.2.html
new file mode 100644
index 0000000000..985942ca36
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.radius.intersecting.2.html
@@ -0,0 +1,40 @@
+
+
+OffscreenCanvas test: 2d.path.roundrect.radius.intersecting.2
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.path.roundrect.radius.intersecting.2
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Check that roundRects with intersecting corner arcs are rendered correctly.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.radius.intersecting.2.worker.js b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.radius.intersecting.2.worker.js
new file mode 100644
index 0000000000..5b6de579ae
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.radius.intersecting.2.worker.js
@@ -0,0 +1,35 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.path.roundrect.radius.intersecting.2
+// Description:Check that roundRects with intersecting corner arcs are rendered correctly.
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("Check that roundRects with intersecting corner arcs are rendered correctly.");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#f00';
+  ctx.fillRect(0, 0, 100, 50);
+  ctx.roundRect(0, 0, 100, 50, [1000, 1000, 1000, 1000]);
+  ctx.fillStyle = '#0f0';
+  ctx.fill();
+  _assertPixel(canvas, 2,25, 0,255,0,255);
+  _assertPixel(canvas, 50,1, 0,255,0,255);
+  _assertPixel(canvas, 50,25, 0,255,0,255);
+  _assertPixel(canvas, 50,48, 0,255,0,255);
+  _assertPixel(canvas, 97,25, 0,255,0,255);
+  _assertPixel(canvas, 1,1, 255,0,0,255);
+  _assertPixel(canvas, 98,1, 255,0,0,255);
+  _assertPixel(canvas, 1,48, 255,0,0,255);
+  _assertPixel(canvas, 98,48, 255,0,0,255);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.radius.negative.html b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.radius.negative.html
new file mode 100644
index 0000000000..60a7bebd24
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.radius.negative.html
@@ -0,0 +1,32 @@
+
+
+OffscreenCanvas test: 2d.path.roundrect.radius.negative
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.path.roundrect.radius.negative
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              roundRect() with negative radius throws an exception
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.radius.negative.worker.js b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.radius.negative.worker.js
new file mode 100644
index 0000000000..554a1ac078
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.radius.negative.worker.js
@@ -0,0 +1,27 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.path.roundrect.radius.negative
+// Description:roundRect() with negative radius throws an exception
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("roundRect() with negative radius throws an exception");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  assert_throws_js(RangeError, () => { ctx.roundRect(0, 0, 0, 0, [-1])});
+  assert_throws_js(RangeError, () => { ctx.roundRect(0, 0, 0, 0, [1, -1])});
+  assert_throws_js(RangeError, () => { ctx.roundRect(0, 0, 0, 0, [new DOMPoint(-1, 1), 1])});
+  assert_throws_js(RangeError, () => { ctx.roundRect(0, 0, 0, 0, [new DOMPoint(1, -1)])});
+  assert_throws_js(RangeError, () => { ctx.roundRect(0, 0, 0, 0, [{x: -1, y: 1}, 1])});
+  assert_throws_js(RangeError, () => { ctx.roundRect(0, 0, 0, 0, [{x: 1, y: -1}])});
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.radius.noargument.html b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.radius.noargument.html
new file mode 100644
index 0000000000..26a69afad0
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.radius.noargument.html
@@ -0,0 +1,50 @@
+
+
+OffscreenCanvas test: 2d.path.roundrect.radius.noargument
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.path.roundrect.radius.noargument
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Check that roundRect draws a rectangle when no radii are provided.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.radius.noargument.worker.js b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.radius.noargument.worker.js
new file mode 100644
index 0000000000..1f6227786b
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.radius.noargument.worker.js
@@ -0,0 +1,45 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.path.roundrect.radius.noargument
+// Description:Check that roundRect draws a rectangle when no radii are provided.
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("Check that roundRect draws a rectangle when no radii are provided.");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#f00';
+  ctx.fillRect(0, 0, 100, 50);
+  ctx.roundRect(10, 10, 80, 30);
+  ctx.fillStyle = '#0f0';
+  ctx.fill();
+  // upper left corner (10, 10)
+  _assertPixel(canvas, 10,9, 255,0,0,255);
+  _assertPixel(canvas, 9,10, 255,0,0,255);
+  _assertPixel(canvas, 10,10, 0,255,0,255);
+
+  // upper right corner (89, 10)
+  _assertPixel(canvas, 90,10, 255,0,0,255);
+  _assertPixel(canvas, 89,9, 255,0,0,255);
+  _assertPixel(canvas, 89,10, 0,255,0,255);
+
+  // lower right corner (89, 39)
+  _assertPixel(canvas, 89,40, 255,0,0,255);
+  _assertPixel(canvas, 90,39, 255,0,0,255);
+  _assertPixel(canvas, 89,39, 0,255,0,255);
+
+  // lower left corner (10, 30)
+  _assertPixel(canvas, 9,39, 255,0,0,255);
+  _assertPixel(canvas, 10,40, 255,0,0,255);
+  _assertPixel(canvas, 10,39, 0,255,0,255);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.radius.none.html b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.radius.none.html
new file mode 100644
index 0000000000..763113e438
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.radius.none.html
@@ -0,0 +1,27 @@
+
+
+OffscreenCanvas test: 2d.path.roundrect.radius.none
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.path.roundrect.radius.none
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Check that roundRect throws an RangeError if radii is an empty array.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.radius.none.worker.js b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.radius.none.worker.js
new file mode 100644
index 0000000000..fefd1b4dd3
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.radius.none.worker.js
@@ -0,0 +1,22 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.path.roundrect.radius.none
+// Description:Check that roundRect throws an RangeError if radii is an empty array.
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("Check that roundRect throws an RangeError if radii is an empty array.");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  assert_throws_js(RangeError, () => { ctx.roundRect(0, 0, 100, 50, [])});
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.radius.toomany.html b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.radius.toomany.html
new file mode 100644
index 0000000000..ce330875fb
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.radius.toomany.html
@@ -0,0 +1,27 @@
+
+
+OffscreenCanvas test: 2d.path.roundrect.radius.toomany
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.path.roundrect.radius.toomany
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Check that roundRect throws an IndeSizeError if radii has more than four items.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.radius.toomany.worker.js b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.radius.toomany.worker.js
new file mode 100644
index 0000000000..e1250afac7
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.radius.toomany.worker.js
@@ -0,0 +1,22 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.path.roundrect.radius.toomany
+// Description:Check that roundRect throws an IndeSizeError if radii has more than four items.
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("Check that roundRect throws an IndeSizeError if radii has more than four items.");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  assert_throws_js(RangeError, () => { ctx.roundRect(0, 0, 100, 50, [0, 0, 0, 0, 0])});
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.selfintersect.html b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.selfintersect.html
new file mode 100644
index 0000000000..15ee6f4958
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.selfintersect.html
@@ -0,0 +1,34 @@
+
+
+OffscreenCanvas test: 2d.path.roundrect.selfintersect
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.path.roundrect.selfintersect
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.selfintersect.worker.js b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.selfintersect.worker.js
new file mode 100644
index 0000000000..91741110fc
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.selfintersect.worker.js
@@ -0,0 +1,29 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.path.roundrect.selfintersect
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#f00';
+  ctx.roundRect(0, 0, 100, 50, [0]);
+  ctx.strokeStyle = '#0f0';
+  ctx.lineWidth = 90;
+  ctx.beginPath();
+  ctx.roundRect(45, 20, 10, 10, [0]);
+  ctx.stroke();
+  _assertPixel(canvas, 50,25, 0,255,0,255);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.winding.html b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.winding.html
new file mode 100644
index 0000000000..47ecd777dc
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.winding.html
@@ -0,0 +1,39 @@
+
+
+OffscreenCanvas test: 2d.path.roundrect.winding
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.path.roundrect.winding
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.winding.worker.js b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.winding.worker.js
new file mode 100644
index 0000000000..737e99f373
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.winding.worker.js
@@ -0,0 +1,34 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.path.roundrect.winding
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#0f0';
+  ctx.fillRect(0, 0, 100, 50);
+  ctx.beginPath();
+  ctx.fillStyle = '#f00';
+  ctx.roundRect(0, 0, 50, 50, [0]);
+  ctx.roundRect(100, 50, -50, -50, [0]);
+  ctx.roundRect(0, 25, 100, -25, [0]);
+  ctx.roundRect(100, 25, -100, 25, [0]);
+  ctx.fill();
+  _assertPixel(canvas, 25,12, 0,255,0,255);
+  _assertPixel(canvas, 75,12, 0,255,0,255);
+  _assertPixel(canvas, 25,37, 0,255,0,255);
+  _assertPixel(canvas, 75,37, 0,255,0,255);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.zero.1.html b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.zero.1.html
new file mode 100644
index 0000000000..772339dcc6
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.zero.1.html
@@ -0,0 +1,34 @@
+
+
+OffscreenCanvas test: 2d.path.roundrect.zero.1
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.path.roundrect.zero.1
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.zero.1.worker.js b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.zero.1.worker.js
new file mode 100644
index 0000000000..afcaa20769
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.zero.1.worker.js
@@ -0,0 +1,29 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.path.roundrect.zero.1
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#f00';
+  ctx.fillRect(0, 0, 100, 50);
+  ctx.strokeStyle = '#0f0';
+  ctx.lineWidth = 100;
+  ctx.beginPath();
+  ctx.roundRect(0, 50, 100, 0, [0]);
+  ctx.stroke();
+  _assertPixel(canvas, 50,25, 0,255,0,255);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.zero.2.html b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.zero.2.html
new file mode 100644
index 0000000000..2aad5aad41
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.zero.2.html
@@ -0,0 +1,34 @@
+
+
+OffscreenCanvas test: 2d.path.roundrect.zero.2
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.path.roundrect.zero.2
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.zero.2.worker.js b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.zero.2.worker.js
new file mode 100644
index 0000000000..dec178bd20
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.zero.2.worker.js
@@ -0,0 +1,29 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.path.roundrect.zero.2
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#f00';
+  ctx.fillRect(0, 0, 100, 50);
+  ctx.strokeStyle = '#0f0';
+  ctx.lineWidth = 100;
+  ctx.beginPath();
+  ctx.roundRect(50, -100, 0, 250, [0]);
+  ctx.stroke();
+  _assertPixel(canvas, 50,25, 0,255,0,255);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.zero.3.html b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.zero.3.html
new file mode 100644
index 0000000000..485384aaff
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.zero.3.html
@@ -0,0 +1,34 @@
+
+
+OffscreenCanvas test: 2d.path.roundrect.zero.3
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.path.roundrect.zero.3
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.zero.3.worker.js b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.zero.3.worker.js
new file mode 100644
index 0000000000..88adb5c437
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.zero.3.worker.js
@@ -0,0 +1,29 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.path.roundrect.zero.3
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#0f0';
+  ctx.fillRect(0, 0, 100, 50);
+  ctx.strokeStyle = '#f00';
+  ctx.lineWidth = 100;
+  ctx.beginPath();
+  ctx.roundRect(50, 25, 0, 0, [0]);
+  ctx.stroke();
+  _assertPixel(canvas, 50,25, 0,255,0,255);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.zero.4.html b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.zero.4.html
new file mode 100644
index 0000000000..dfd4821a84
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.zero.4.html
@@ -0,0 +1,34 @@
+
+
+OffscreenCanvas test: 2d.path.roundrect.zero.4
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.path.roundrect.zero.4
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.zero.4.worker.js b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.zero.4.worker.js
new file mode 100644
index 0000000000..fe8cc149c5
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.zero.4.worker.js
@@ -0,0 +1,29 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.path.roundrect.zero.4
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#f00';
+  ctx.fillRect(0, 0, 100, 50);
+  ctx.strokeStyle = '#0f0';
+  ctx.lineWidth = 50;
+  ctx.roundRect(100, 25, 0, 0, [0]);
+  ctx.lineTo(0, 25);
+  ctx.stroke();
+  _assertPixel(canvas, 50,25, 0,255,0,255);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.zero.5.html b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.zero.5.html
new file mode 100644
index 0000000000..931a737e3b
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.zero.5.html
@@ -0,0 +1,34 @@
+
+
+OffscreenCanvas test: 2d.path.roundrect.zero.5
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.path.roundrect.zero.5
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.zero.5.worker.js b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.zero.5.worker.js
new file mode 100644
index 0000000000..1fd61246a9
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.zero.5.worker.js
@@ -0,0 +1,29 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.path.roundrect.zero.5
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#0f0';
+  ctx.fillRect(0, 0, 100, 50);
+  ctx.strokeStyle = '#f00';
+  ctx.lineWidth = 50;
+  ctx.moveTo(0, 0);
+  ctx.roundRect(100, 25, 0, 0, [0]);
+  ctx.stroke();
+  _assertPixel(canvas, 50,25, 0,255,0,255);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.zero.6.html b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.zero.6.html
new file mode 100644
index 0000000000..25ed23d329
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.zero.6.html
@@ -0,0 +1,36 @@
+
+
+OffscreenCanvas test: 2d.path.roundrect.zero.6
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.path.roundrect.zero.6
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.zero.6.worker.js b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.zero.6.worker.js
new file mode 100644
index 0000000000..c4b6fba5b0
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.roundrect.zero.6.worker.js
@@ -0,0 +1,31 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.path.roundrect.zero.6
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#0f0';
+  ctx.fillRect(0, 0, 100, 50);
+  ctx.strokeStyle = '#f00';
+  ctx.lineJoin = 'miter';
+  ctx.miterLimit = 1.5;
+  ctx.lineWidth = 200;
+  ctx.beginPath();
+  ctx.roundRect(100, 25, 1000, 0, [0]);
+  ctx.stroke();
+  _assertPixel(canvas, 50,25, 0,255,0,255);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.stroke.empty.html b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.stroke.empty.html
new file mode 100644
index 0000000000..29a95da20d
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.stroke.empty.html
@@ -0,0 +1,40 @@
+
+
+OffscreenCanvas test: 2d.path.stroke.empty
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.path.stroke.empty
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Empty subpaths are not stroked
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.stroke.empty.worker.js b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.stroke.empty.worker.js
new file mode 100644
index 0000000000..56ee68f185
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.stroke.empty.worker.js
@@ -0,0 +1,35 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.path.stroke.empty
+// Description:Empty subpaths are not stroked
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("Empty subpaths are not stroked");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#0f0';
+  ctx.fillRect(0, 0, 100, 50);
+
+  ctx.strokeStyle = '#f00';
+  ctx.lineWidth = 100;
+  ctx.lineCap = 'round';
+  ctx.lineJoin = 'round';
+
+  ctx.beginPath();
+  ctx.moveTo(40, 25);
+  ctx.moveTo(60, 25);
+  ctx.stroke();
+
+  _assertPixel(canvas, 50,25, 0,255,0,255);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.stroke.overlap.html b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.stroke.overlap.html
new file mode 100644
index 0000000000..c3847464bb
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.stroke.overlap.html
@@ -0,0 +1,38 @@
+
+
+OffscreenCanvas test: 2d.path.stroke.overlap
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.path.stroke.overlap
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Stroked subpaths are combined before being drawn
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.stroke.overlap.png b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.stroke.overlap.png
new file mode 100644
index 0000000000..e2a35d48d4
Binary files /dev/null and b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.stroke.overlap.png differ
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.stroke.overlap.worker.js b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.stroke.overlap.worker.js
new file mode 100644
index 0000000000..0e59d3bfc0
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.stroke.overlap.worker.js
@@ -0,0 +1,33 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.path.stroke.overlap
+// Description:Stroked subpaths are combined before being drawn
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("Stroked subpaths are combined before being drawn");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#000';
+  ctx.fillRect(0, 0, 100, 50);
+
+  ctx.strokeStyle = 'rgba(0, 255, 0, 0.5)';
+  ctx.lineWidth = 50;
+  ctx.moveTo(0, 20);
+  ctx.lineTo(100, 20);
+  ctx.moveTo(0, 30);
+  ctx.lineTo(100, 30);
+  ctx.stroke();
+
+  _assertPixelApprox(canvas, 50,25, 0,127,0,255, 1);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.stroke.prune.arc.html b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.stroke.prune.arc.html
new file mode 100644
index 0000000000..40a73b85fb
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.stroke.prune.arc.html
@@ -0,0 +1,45 @@
+
+
+OffscreenCanvas test: 2d.path.stroke.prune.arc
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.path.stroke.prune.arc
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Zero-length line segments from arcTo and arc are removed before stroking
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.stroke.prune.arc.worker.js b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.stroke.prune.arc.worker.js
new file mode 100644
index 0000000000..880e8146ba
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.stroke.prune.arc.worker.js
@@ -0,0 +1,40 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.path.stroke.prune.arc
+// Description:Zero-length line segments from arcTo and arc are removed before stroking
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("Zero-length line segments from arcTo and arc are removed before stroking");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#0f0';
+  ctx.fillRect(0, 0, 100, 50);
+
+  ctx.strokeStyle = '#f00';
+  ctx.lineWidth = 100;
+  ctx.lineCap = 'round';
+  ctx.lineJoin = 'round';
+
+  ctx.beginPath();
+  ctx.moveTo(50, 25);
+  ctx.arcTo(50, 25, 150, 25, 10);
+  ctx.stroke();
+
+  ctx.beginPath();
+  ctx.moveTo(60, 25);
+  ctx.arc(50, 25, 10, 0, 0, false);
+  ctx.stroke();
+
+  _assertPixel(canvas, 50,25, 0,255,0,255);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.stroke.prune.closed.html b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.stroke.prune.closed.html
new file mode 100644
index 0000000000..2a3b40068d
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.stroke.prune.closed.html
@@ -0,0 +1,41 @@
+
+
+OffscreenCanvas test: 2d.path.stroke.prune.closed
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.path.stroke.prune.closed
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Zero-length line segments from closed paths are removed before stroking
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.stroke.prune.closed.worker.js b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.stroke.prune.closed.worker.js
new file mode 100644
index 0000000000..e1d271bf6a
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.stroke.prune.closed.worker.js
@@ -0,0 +1,36 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.path.stroke.prune.closed
+// Description:Zero-length line segments from closed paths are removed before stroking
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("Zero-length line segments from closed paths are removed before stroking");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#0f0';
+  ctx.fillRect(0, 0, 100, 50);
+
+  ctx.strokeStyle = '#f00';
+  ctx.lineWidth = 100;
+  ctx.lineCap = 'round';
+  ctx.lineJoin = 'round';
+
+  ctx.beginPath();
+  ctx.moveTo(50, 25);
+  ctx.lineTo(50, 25);
+  ctx.closePath();
+  ctx.stroke();
+
+  _assertPixel(canvas, 50,25, 0,255,0,255);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.stroke.prune.corner.html b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.stroke.prune.corner.html
new file mode 100644
index 0000000000..45db65d6d1
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.stroke.prune.corner.html
@@ -0,0 +1,43 @@
+
+
+OffscreenCanvas test: 2d.path.stroke.prune.corner
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.path.stroke.prune.corner
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Zero-length line segments are removed before stroking with miters
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.stroke.prune.corner.worker.js b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.stroke.prune.corner.worker.js
new file mode 100644
index 0000000000..fff4ba19e9
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.stroke.prune.corner.worker.js
@@ -0,0 +1,38 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.path.stroke.prune.corner
+// Description:Zero-length line segments are removed before stroking with miters
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("Zero-length line segments are removed before stroking with miters");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#0f0';
+  ctx.fillRect(0, 0, 100, 50);
+
+  ctx.strokeStyle = '#f00';
+  ctx.lineWidth = 400;
+  ctx.lineJoin = 'miter';
+  ctx.miterLimit = 1.4;
+
+  ctx.beginPath();
+  ctx.moveTo(-1000, 200);
+  ctx.lineTo(-100, 200);
+  ctx.lineTo(-100, 200);
+  ctx.lineTo(-100, 200);
+  ctx.lineTo(-100, 1000);
+  ctx.stroke();
+
+  _assertPixel(canvas, 50,25, 0,255,0,255);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.stroke.prune.curve.html b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.stroke.prune.curve.html
new file mode 100644
index 0000000000..946395f1c1
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.stroke.prune.curve.html
@@ -0,0 +1,45 @@
+
+
+OffscreenCanvas test: 2d.path.stroke.prune.curve
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.path.stroke.prune.curve
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Zero-length line segments from quadraticCurveTo and bezierCurveTo are removed before stroking
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.stroke.prune.curve.worker.js b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.stroke.prune.curve.worker.js
new file mode 100644
index 0000000000..ed960fdbe7
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.stroke.prune.curve.worker.js
@@ -0,0 +1,40 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.path.stroke.prune.curve
+// Description:Zero-length line segments from quadraticCurveTo and bezierCurveTo are removed before stroking
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("Zero-length line segments from quadraticCurveTo and bezierCurveTo are removed before stroking");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#0f0';
+  ctx.fillRect(0, 0, 100, 50);
+
+  ctx.strokeStyle = '#f00';
+  ctx.lineWidth = 100;
+  ctx.lineCap = 'round';
+  ctx.lineJoin = 'round';
+
+  ctx.beginPath();
+  ctx.moveTo(50, 25);
+  ctx.quadraticCurveTo(50, 25, 50, 25);
+  ctx.stroke();
+
+  ctx.beginPath();
+  ctx.moveTo(50, 25);
+  ctx.bezierCurveTo(50, 25, 50, 25, 50, 25);
+  ctx.stroke();
+
+  _assertPixel(canvas, 50,25, 0,255,0,255);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.stroke.prune.line.html b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.stroke.prune.line.html
new file mode 100644
index 0000000000..1f0a892455
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.stroke.prune.line.html
@@ -0,0 +1,40 @@
+
+
+OffscreenCanvas test: 2d.path.stroke.prune.line
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.path.stroke.prune.line
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Zero-length line segments from lineTo are removed before stroking
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.stroke.prune.line.worker.js b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.stroke.prune.line.worker.js
new file mode 100644
index 0000000000..a00e73bcbb
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.stroke.prune.line.worker.js
@@ -0,0 +1,35 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.path.stroke.prune.line
+// Description:Zero-length line segments from lineTo are removed before stroking
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("Zero-length line segments from lineTo are removed before stroking");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#0f0';
+  ctx.fillRect(0, 0, 100, 50);
+
+  ctx.strokeStyle = '#f00';
+  ctx.lineWidth = 100;
+  ctx.lineCap = 'round';
+  ctx.lineJoin = 'round';
+
+  ctx.beginPath();
+  ctx.moveTo(50, 25);
+  ctx.lineTo(50, 25);
+  ctx.stroke();
+
+  _assertPixel(canvas, 50,25, 0,255,0,255);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.stroke.prune.rect.html b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.stroke.prune.rect.html
new file mode 100644
index 0000000000..ffce538d91
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.stroke.prune.rect.html
@@ -0,0 +1,41 @@
+
+
+OffscreenCanvas test: 2d.path.stroke.prune.rect
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.path.stroke.prune.rect
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Zero-length line segments from rect and strokeRect are removed before stroking
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.stroke.prune.rect.worker.js b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.stroke.prune.rect.worker.js
new file mode 100644
index 0000000000..87bb533ff9
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.stroke.prune.rect.worker.js
@@ -0,0 +1,36 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.path.stroke.prune.rect
+// Description:Zero-length line segments from rect and strokeRect are removed before stroking
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("Zero-length line segments from rect and strokeRect are removed before stroking");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#0f0';
+  ctx.fillRect(0, 0, 100, 50);
+
+  ctx.strokeStyle = '#f00';
+  ctx.lineWidth = 100;
+  ctx.lineCap = 'round';
+  ctx.lineJoin = 'round';
+
+  ctx.beginPath();
+  ctx.rect(50, 25, 0, 0);
+  ctx.stroke();
+
+  ctx.strokeRect(50, 25, 0, 0);
+
+  _assertPixel(canvas, 50,25, 0,255,0,255);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.stroke.scale1.html b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.stroke.scale1.html
new file mode 100644
index 0000000000..47639065d3
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.stroke.scale1.html
@@ -0,0 +1,54 @@
+
+
+OffscreenCanvas test: 2d.path.stroke.scale1
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.path.stroke.scale1
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Stroke line widths are scaled by the current transformation matrix
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.stroke.scale1.worker.js b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.stroke.scale1.worker.js
new file mode 100644
index 0000000000..3725fdf6e8
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.stroke.scale1.worker.js
@@ -0,0 +1,49 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.path.stroke.scale1
+// Description:Stroke line widths are scaled by the current transformation matrix
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("Stroke line widths are scaled by the current transformation matrix");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#f00';
+  ctx.fillRect(0, 0, 100, 50);
+
+  ctx.beginPath();
+  ctx.rect(25, 12.5, 50, 25);
+  ctx.save();
+  ctx.scale(50, 25);
+  ctx.strokeStyle = '#0f0';
+  ctx.stroke();
+  ctx.restore();
+
+  ctx.beginPath();
+  ctx.rect(-25, -12.5, 150, 75);
+  ctx.save();
+  ctx.scale(50, 25);
+  ctx.strokeStyle = '#f00';
+  ctx.stroke();
+  ctx.restore();
+
+  _assertPixel(canvas, 0,0, 0,255,0,255);
+  _assertPixel(canvas, 50,0, 0,255,0,255);
+  _assertPixel(canvas, 99,0, 0,255,0,255);
+  _assertPixel(canvas, 0,25, 0,255,0,255);
+  _assertPixel(canvas, 50,25, 0,255,0,255);
+  _assertPixel(canvas, 99,25, 0,255,0,255);
+  _assertPixel(canvas, 0,49, 0,255,0,255);
+  _assertPixel(canvas, 50,49, 0,255,0,255);
+  _assertPixel(canvas, 99,49, 0,255,0,255);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.stroke.scale2.html b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.stroke.scale2.html
new file mode 100644
index 0000000000..447a6dfadc
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.stroke.scale2.html
@@ -0,0 +1,56 @@
+
+
+OffscreenCanvas test: 2d.path.stroke.scale2
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.path.stroke.scale2
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Stroke line widths are scaled by the current transformation matrix
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.stroke.scale2.worker.js b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.stroke.scale2.worker.js
new file mode 100644
index 0000000000..5223de7816
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.stroke.scale2.worker.js
@@ -0,0 +1,51 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.path.stroke.scale2
+// Description:Stroke line widths are scaled by the current transformation matrix
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("Stroke line widths are scaled by the current transformation matrix");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#f00';
+  ctx.fillRect(0, 0, 100, 50);
+
+  ctx.beginPath();
+  ctx.rect(25, 12.5, 50, 25);
+  ctx.save();
+  ctx.rotate(Math.PI/2);
+  ctx.scale(25, 50);
+  ctx.strokeStyle = '#0f0';
+  ctx.stroke();
+  ctx.restore();
+
+  ctx.beginPath();
+  ctx.rect(-25, -12.5, 150, 75);
+  ctx.save();
+  ctx.rotate(Math.PI/2);
+  ctx.scale(25, 50);
+  ctx.strokeStyle = '#f00';
+  ctx.stroke();
+  ctx.restore();
+
+  _assertPixel(canvas, 0,0, 0,255,0,255);
+  _assertPixel(canvas, 50,0, 0,255,0,255);
+  _assertPixel(canvas, 99,0, 0,255,0,255);
+  _assertPixel(canvas, 0,25, 0,255,0,255);
+  _assertPixel(canvas, 50,25, 0,255,0,255);
+  _assertPixel(canvas, 99,25, 0,255,0,255);
+  _assertPixel(canvas, 0,49, 0,255,0,255);
+  _assertPixel(canvas, 50,49, 0,255,0,255);
+  _assertPixel(canvas, 99,49, 0,255,0,255);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.stroke.skew.html b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.stroke.skew.html
new file mode 100644
index 0000000000..1fb118b122
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.stroke.skew.html
@@ -0,0 +1,70 @@
+
+
+OffscreenCanvas test: 2d.path.stroke.skew
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.path.stroke.skew
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Strokes lines are skewed by the current transformation matrix
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.stroke.skew.worker.js b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.stroke.skew.worker.js
new file mode 100644
index 0000000000..e65b796d06
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.stroke.skew.worker.js
@@ -0,0 +1,65 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.path.stroke.skew
+// Description:Strokes lines are skewed by the current transformation matrix
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("Strokes lines are skewed by the current transformation matrix");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#f00';
+  ctx.fillRect(0, 0, 100, 50);
+
+  ctx.save();
+  ctx.beginPath();
+  ctx.moveTo(49, -50);
+  ctx.lineTo(201, -50);
+  ctx.rotate(Math.PI/4);
+  ctx.scale(1, 283);
+  ctx.strokeStyle = '#0f0';
+  ctx.stroke();
+  ctx.restore();
+
+  ctx.save();
+  ctx.beginPath();
+  ctx.translate(-150, 0);
+  ctx.moveTo(49, -50);
+  ctx.lineTo(199, -50);
+  ctx.rotate(Math.PI/4);
+  ctx.scale(1, 142);
+  ctx.strokeStyle = '#f00';
+  ctx.stroke();
+  ctx.restore();
+
+  ctx.save();
+  ctx.beginPath();
+  ctx.translate(-150, 0);
+  ctx.moveTo(49, -50);
+  ctx.lineTo(199, -50);
+  ctx.rotate(Math.PI/4);
+  ctx.scale(1, 142);
+  ctx.strokeStyle = '#f00';
+  ctx.stroke();
+  ctx.restore();
+
+  _assertPixel(canvas, 0,0, 0,255,0,255);
+  _assertPixel(canvas, 50,0, 0,255,0,255);
+  _assertPixel(canvas, 99,0, 0,255,0,255);
+  _assertPixel(canvas, 0,25, 0,255,0,255);
+  _assertPixel(canvas, 50,25, 0,255,0,255);
+  _assertPixel(canvas, 99,25, 0,255,0,255);
+  _assertPixel(canvas, 0,49, 0,255,0,255);
+  _assertPixel(canvas, 50,49, 0,255,0,255);
+  _assertPixel(canvas, 99,49, 0,255,0,255);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.stroke.unaffected.html b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.stroke.unaffected.html
new file mode 100644
index 0000000000..3fc9cfad88
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.stroke.unaffected.html
@@ -0,0 +1,42 @@
+
+
+OffscreenCanvas test: 2d.path.stroke.unaffected
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.path.stroke.unaffected
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Stroking does not start a new path or subpath
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.stroke.unaffected.worker.js b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.stroke.unaffected.worker.js
new file mode 100644
index 0000000000..d9df1ada94
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.stroke.unaffected.worker.js
@@ -0,0 +1,37 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.path.stroke.unaffected
+// Description:Stroking does not start a new path or subpath
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("Stroking does not start a new path or subpath");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#f00';
+  ctx.fillRect(0, 0, 100, 50);
+
+  ctx.lineWidth = 50;
+  ctx.moveTo(-100, 25);
+  ctx.lineTo(-100, -100);
+  ctx.lineTo(200, -100);
+  ctx.lineTo(200, 25);
+  ctx.strokeStyle = '#f00';
+  ctx.stroke();
+
+  ctx.closePath();
+  ctx.strokeStyle = '#0f0';
+  ctx.stroke();
+
+  _assertPixel(canvas, 50,25, 0,255,0,255);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.stroke.union.html b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.stroke.union.html
new file mode 100644
index 0000000000..6b980acff2
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.stroke.union.html
@@ -0,0 +1,38 @@
+
+
+OffscreenCanvas test: 2d.path.stroke.union
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.path.stroke.union
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Strokes in opposite directions are unioned, not subtracted
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.stroke.union.worker.js b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.stroke.union.worker.js
new file mode 100644
index 0000000000..3b05feec03
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.stroke.union.worker.js
@@ -0,0 +1,33 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.path.stroke.union
+// Description:Strokes in opposite directions are unioned, not subtracted
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("Strokes in opposite directions are unioned, not subtracted");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#f00';
+  ctx.fillRect(0, 0, 100, 50);
+
+  ctx.strokeStyle = '#0f0';
+  ctx.lineWidth = 40;
+  ctx.moveTo(0, 10);
+  ctx.lineTo(100, 10);
+  ctx.moveTo(100, 40);
+  ctx.lineTo(0, 40);
+  ctx.stroke();
+
+  _assertPixel(canvas, 50,25, 0,255,0,255);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.transformation.basic.html b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.transformation.basic.html
new file mode 100644
index 0000000000..27f00aae03
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.transformation.basic.html
@@ -0,0 +1,36 @@
+
+
+OffscreenCanvas test: 2d.path.transformation.basic
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.path.transformation.basic
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.transformation.basic.worker.js b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.transformation.basic.worker.js
new file mode 100644
index 0000000000..3ae4c876d5
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.transformation.basic.worker.js
@@ -0,0 +1,31 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.path.transformation.basic
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#f00';
+  ctx.fillRect(0, 0, 100, 50);
+
+  ctx.translate(-100, 0);
+  ctx.rect(100, 0, 100, 50);
+  ctx.translate(0, -100);
+  ctx.fillStyle = '#0f0';
+  ctx.fill();
+
+  _assertPixel(canvas, 50,25, 0,255,0,255);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.transformation.changing.html b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.transformation.changing.html
new file mode 100644
index 0000000000..786a5cf589
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.transformation.changing.html
@@ -0,0 +1,42 @@
+
+
+OffscreenCanvas test: 2d.path.transformation.changing
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.path.transformation.changing
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Transformations are applied while building paths, not when drawing
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.transformation.changing.worker.js b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.transformation.changing.worker.js
new file mode 100644
index 0000000000..2d8993c685
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.transformation.changing.worker.js
@@ -0,0 +1,37 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.path.transformation.changing
+// Description:Transformations are applied while building paths, not when drawing
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("Transformations are applied while building paths, not when drawing");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#f00';
+  ctx.fillRect(0, 0, 100, 50);
+  ctx.fillStyle = '#0f0';
+  ctx.moveTo(0, 0);
+  ctx.translate(100, 0);
+  ctx.lineTo(0, 0);
+  ctx.translate(0, 50);
+  ctx.lineTo(0, 0);
+  ctx.translate(-100, 0);
+  ctx.lineTo(0, 0);
+  ctx.translate(1000, 1000);
+  ctx.rotate(Math.PI/2);
+  ctx.scale(0.1, 0.1);
+  ctx.fill();
+
+  _assertPixel(canvas, 50,25, 0,255,0,255);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.transformation.multiple.html b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.transformation.multiple.html
new file mode 100644
index 0000000000..636491bb0e
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.transformation.multiple.html
@@ -0,0 +1,47 @@
+
+
+OffscreenCanvas test: 2d.path.transformation.multiple
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.path.transformation.multiple
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Transformations are applied while building paths, not when drawing
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.transformation.multiple.worker.js b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.transformation.multiple.worker.js
new file mode 100644
index 0000000000..a9fb37d0de
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.transformation.multiple.worker.js
@@ -0,0 +1,42 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.path.transformation.multiple
+// Description:Transformations are applied while building paths, not when drawing
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("Transformations are applied while building paths, not when drawing");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#0f0';
+  ctx.fillRect(0, 0, 100, 50);
+
+  ctx.fillStyle = '#f00';
+  ctx.translate(-100, 0);
+  ctx.rect(0, 0, 100, 50);
+  ctx.fill();
+  ctx.translate(100, 0);
+  ctx.fill();
+
+  ctx.beginPath();
+  ctx.strokeStyle = '#f00';
+  ctx.lineWidth = 50;
+  ctx.translate(0, -50);
+  ctx.moveTo(0, 25);
+  ctx.lineTo(100, 25);
+  ctx.stroke();
+  ctx.translate(0, 50);
+  ctx.stroke();
+
+  _assertPixel(canvas, 50,25, 0,255,0,255);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.create1.basic.html b/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.create1.basic.html
new file mode 100644
index 0000000000..f6932386df
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.create1.basic.html
@@ -0,0 +1,27 @@
+
+
+OffscreenCanvas test: 2d.imageData.create1.basic
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.imageData.create1.basic
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              createImageData(imgdata) exists and returns something
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.create1.basic.worker.js b/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.create1.basic.worker.js
new file mode 100644
index 0000000000..30f3ed21b1
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.create1.basic.worker.js
@@ -0,0 +1,22 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.imageData.create1.basic
+// Description:createImageData(imgdata) exists and returns something
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("createImageData(imgdata) exists and returns something");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  _assertDifferent(ctx.createImageData(ctx.createImageData(1, 1)), null, "ctx.createImageData(ctx.createImageData(1, 1))", "null");
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.create1.initial.html b/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.create1.initial.html
new file mode 100644
index 0000000000..627b09b8bd
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.create1.initial.html
@@ -0,0 +1,38 @@
+
+
+OffscreenCanvas test: 2d.imageData.create1.initial
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.imageData.create1.initial
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              createImageData(imgdata) returns transparent black data of the right size
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.create1.initial.worker.js b/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.create1.initial.worker.js
new file mode 100644
index 0000000000..da0856a487
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.create1.initial.worker.js
@@ -0,0 +1,33 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.imageData.create1.initial
+// Description:createImageData(imgdata) returns transparent black data of the right size
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("createImageData(imgdata) returns transparent black data of the right size");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#0f0';
+  ctx.fillRect(0, 0, 100, 50);
+  var imgdata1 = ctx.getImageData(0, 0, 10, 20);
+  var imgdata2 = ctx.createImageData(imgdata1);
+  _assertSame(imgdata2.data.length, imgdata1.data.length, "imgdata2.data.length", "imgdata1.data.length");
+  _assertSame(imgdata2.width, imgdata1.width, "imgdata2.width", "imgdata1.width");
+  _assertSame(imgdata2.height, imgdata1.height, "imgdata2.height", "imgdata1.height");
+  var isTransparentBlack = true;
+  for (var i = 0; i < imgdata2.data.length; ++i)
+      if (imgdata2.data[i] !== 0)
+          isTransparentBlack = false;
+  _assert(isTransparentBlack, "isTransparentBlack");
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.create1.zero.html b/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.create1.zero.html
new file mode 100644
index 0000000000..b5a95172b6
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.create1.zero.html
@@ -0,0 +1,27 @@
+
+
+OffscreenCanvas test: 2d.imageData.create1.zero
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.imageData.create1.zero
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              createImageData(null) throws TypeError
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.create1.zero.worker.js b/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.create1.zero.worker.js
new file mode 100644
index 0000000000..1eabd9ebf3
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.create1.zero.worker.js
@@ -0,0 +1,22 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.imageData.create1.zero
+// Description:createImageData(null) throws TypeError
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("createImageData(null) throws TypeError");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  assert_throws_js(TypeError, function() { ctx.createImageData(null); });
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.create2.basic.html b/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.create2.basic.html
new file mode 100644
index 0000000000..7c265f5209
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.create2.basic.html
@@ -0,0 +1,27 @@
+
+
+OffscreenCanvas test: 2d.imageData.create2.basic
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.imageData.create2.basic
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              createImageData(sw, sh) exists and returns something
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.create2.basic.worker.js b/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.create2.basic.worker.js
new file mode 100644
index 0000000000..26ca82929c
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.create2.basic.worker.js
@@ -0,0 +1,22 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.imageData.create2.basic
+// Description:createImageData(sw, sh) exists and returns something
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("createImageData(sw, sh) exists and returns something");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  _assertDifferent(ctx.createImageData(1, 1), null, "ctx.createImageData(1, 1)", "null");
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.create2.double.html b/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.create2.double.html
new file mode 100644
index 0000000000..ca54641a30
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.create2.double.html
@@ -0,0 +1,32 @@
+
+
+OffscreenCanvas test: 2d.imageData.create2.double
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.imageData.create2.double
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              createImageData(w, h) double is converted to long
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.create2.double.worker.js b/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.create2.double.worker.js
new file mode 100644
index 0000000000..2f3416d0f0
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.create2.double.worker.js
@@ -0,0 +1,27 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.imageData.create2.double
+// Description:createImageData(w, h) double is converted to long
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("createImageData(w, h) double is converted to long");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  var imgdata1 = ctx.createImageData(10.01, 10.99);
+  var imgdata2 = ctx.createImageData(-10.01, -10.99);
+  _assertSame(imgdata1.width, 10, "imgdata1.width", "10");
+  _assertSame(imgdata1.height, 10, "imgdata1.height", "10");
+  _assertSame(imgdata2.width, 10, "imgdata2.width", "10");
+  _assertSame(imgdata2.height, 10, "imgdata2.height", "10");
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.create2.initial.html b/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.create2.initial.html
new file mode 100644
index 0000000000..566a9a30db
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.create2.initial.html
@@ -0,0 +1,35 @@
+
+
+OffscreenCanvas test: 2d.imageData.create2.initial
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.imageData.create2.initial
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              createImageData(sw, sh) returns transparent black data of the right size
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.create2.initial.worker.js b/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.create2.initial.worker.js
new file mode 100644
index 0000000000..472e1dfd2e
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.create2.initial.worker.js
@@ -0,0 +1,30 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.imageData.create2.initial
+// Description:createImageData(sw, sh) returns transparent black data of the right size
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("createImageData(sw, sh) returns transparent black data of the right size");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  var imgdata = ctx.createImageData(10, 20);
+  _assertSame(imgdata.data.length, imgdata.width*imgdata.height*4, "imgdata.data.length", "imgdata.width*imgdata.height*4");
+  _assert(imgdata.width < imgdata.height, "imgdata.width < imgdata.height");
+  _assert(imgdata.width > 0, "imgdata.width > 0");
+  var isTransparentBlack = true;
+  for (var i = 0; i < imgdata.data.length; ++i)
+      if (imgdata.data[i] !== 0)
+          isTransparentBlack = false;
+  _assert(isTransparentBlack, "isTransparentBlack");
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.create2.large.html b/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.create2.large.html
new file mode 100644
index 0000000000..75b8f737fd
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.create2.large.html
@@ -0,0 +1,35 @@
+
+
+OffscreenCanvas test: 2d.imageData.create2.large
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.imageData.create2.large
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              createImageData(sw, sh) works for sizes much larger than the canvas
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.create2.large.worker.js b/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.create2.large.worker.js
new file mode 100644
index 0000000000..e2b85bfb69
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.create2.large.worker.js
@@ -0,0 +1,30 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.imageData.create2.large
+// Description:createImageData(sw, sh) works for sizes much larger than the canvas
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("createImageData(sw, sh) works for sizes much larger than the canvas");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  var imgdata = ctx.createImageData(1000, 2000);
+  _assertSame(imgdata.data.length, imgdata.width*imgdata.height*4, "imgdata.data.length", "imgdata.width*imgdata.height*4");
+  _assert(imgdata.width < imgdata.height, "imgdata.width < imgdata.height");
+  _assert(imgdata.width > 0, "imgdata.width > 0");
+  var isTransparentBlack = true;
+  for (var i = 0; i < imgdata.data.length; i += 7813) // check ~1024 points (assuming normal scaling)
+      if (imgdata.data[i] !== 0)
+          isTransparentBlack = false;
+  _assert(isTransparentBlack, "isTransparentBlack");
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.create2.negative.html b/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.create2.negative.html
new file mode 100644
index 0000000000..b41153c282
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.create2.negative.html
@@ -0,0 +1,33 @@
+
+
+OffscreenCanvas test: 2d.imageData.create2.negative
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.imageData.create2.negative
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              createImageData(sw, sh) takes the absolute magnitude of the size arguments
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.create2.negative.worker.js b/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.create2.negative.worker.js
new file mode 100644
index 0000000000..62ed60e102
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.create2.negative.worker.js
@@ -0,0 +1,28 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.imageData.create2.negative
+// Description:createImageData(sw, sh) takes the absolute magnitude of the size arguments
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("createImageData(sw, sh) takes the absolute magnitude of the size arguments");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  var imgdata1 = ctx.createImageData(10, 20);
+  var imgdata2 = ctx.createImageData(-10, 20);
+  var imgdata3 = ctx.createImageData(10, -20);
+  var imgdata4 = ctx.createImageData(-10, -20);
+  _assertSame(imgdata1.data.length, imgdata2.data.length, "imgdata1.data.length", "imgdata2.data.length");
+  _assertSame(imgdata2.data.length, imgdata3.data.length, "imgdata2.data.length", "imgdata3.data.length");
+  _assertSame(imgdata3.data.length, imgdata4.data.length, "imgdata3.data.length", "imgdata4.data.length");
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.create2.nonfinite.html b/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.create2.nonfinite.html
new file mode 100644
index 0000000000..dd6f6d8350
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.create2.nonfinite.html
@@ -0,0 +1,43 @@
+
+
+OffscreenCanvas test: 2d.imageData.create2.nonfinite
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.imageData.create2.nonfinite
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              createImageData() throws TypeError if arguments are not finite
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Defined in "Web IDL" (draft)
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.create2.nonfinite.worker.js b/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.create2.nonfinite.worker.js
new file mode 100644
index 0000000000..18825588bb
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.create2.nonfinite.worker.js
@@ -0,0 +1,38 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.imageData.create2.nonfinite
+// Description:createImageData() throws TypeError if arguments are not finite
+// Note:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Defined in "Web IDL" (draft)
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("createImageData() throws TypeError if arguments are not finite");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  assert_throws_js(TypeError, function() { ctx.createImageData(Infinity, 10); });
+  assert_throws_js(TypeError, function() { ctx.createImageData(-Infinity, 10); });
+  assert_throws_js(TypeError, function() { ctx.createImageData(NaN, 10); });
+  assert_throws_js(TypeError, function() { ctx.createImageData(10, Infinity); });
+  assert_throws_js(TypeError, function() { ctx.createImageData(10, -Infinity); });
+  assert_throws_js(TypeError, function() { ctx.createImageData(10, NaN); });
+  assert_throws_js(TypeError, function() { ctx.createImageData(Infinity, Infinity); });
+  var posinfobj = { valueOf: function() { return Infinity; } },
+      neginfobj = { valueOf: function() { return -Infinity; } },
+      nanobj = { valueOf: function() { return -Infinity; } };
+  assert_throws_js(TypeError, function() { ctx.createImageData(posinfobj, 10); });
+  assert_throws_js(TypeError, function() { ctx.createImageData(neginfobj, 10); });
+  assert_throws_js(TypeError, function() { ctx.createImageData(nanobj, 10); });
+  assert_throws_js(TypeError, function() { ctx.createImageData(10, posinfobj); });
+  assert_throws_js(TypeError, function() { ctx.createImageData(10, neginfobj); });
+  assert_throws_js(TypeError, function() { ctx.createImageData(10, nanobj); });
+  assert_throws_js(TypeError, function() { ctx.createImageData(posinfobj, posinfobj); });
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.create2.round.html b/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.create2.round.html
new file mode 100644
index 0000000000..0ecb2fb686
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.create2.round.html
@@ -0,0 +1,30 @@
+
+
+OffscreenCanvas test: 2d.imageData.create2.round
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.imageData.create2.round
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              createImageData(w, h) is rounded the same as getImageData(0, 0, w, h)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.create2.round.worker.js b/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.create2.round.worker.js
new file mode 100644
index 0000000000..b416a02bf2
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.create2.round.worker.js
@@ -0,0 +1,25 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.imageData.create2.round
+// Description:createImageData(w, h) is rounded the same as getImageData(0, 0, w, h)
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("createImageData(w, h) is rounded the same as getImageData(0, 0, w, h)");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  var imgdata1 = ctx.createImageData(10.01, 10.99);
+  var imgdata2 = ctx.getImageData(0, 0, 10.01, 10.99);
+  _assertSame(imgdata1.width, imgdata2.width, "imgdata1.width", "imgdata2.width");
+  _assertSame(imgdata1.height, imgdata2.height, "imgdata1.height", "imgdata2.height");
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.create2.zero.html b/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.create2.zero.html
new file mode 100644
index 0000000000..2f7082a7f0
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.create2.zero.html
@@ -0,0 +1,31 @@
+
+
+OffscreenCanvas test: 2d.imageData.create2.zero
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.imageData.create2.zero
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              createImageData(sw, sh) throws INDEX_SIZE_ERR if size is zero
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.create2.zero.worker.js b/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.create2.zero.worker.js
new file mode 100644
index 0000000000..7f57c33898
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.create2.zero.worker.js
@@ -0,0 +1,26 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.imageData.create2.zero
+// Description:createImageData(sw, sh) throws INDEX_SIZE_ERR if size is zero
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("createImageData(sw, sh) throws INDEX_SIZE_ERR if size is zero");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  assert_throws_dom("INDEX_SIZE_ERR", function() { ctx.createImageData(10, 0); });
+  assert_throws_dom("INDEX_SIZE_ERR", function() { ctx.createImageData(0, 10); });
+  assert_throws_dom("INDEX_SIZE_ERR", function() { ctx.createImageData(0, 0); });
+  assert_throws_dom("INDEX_SIZE_ERR", function() { ctx.createImageData(0.99, 10); });
+  assert_throws_dom("INDEX_SIZE_ERR", function() { ctx.createImageData(10, 0.1); });
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.get.basic.html b/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.get.basic.html
new file mode 100644
index 0000000000..d810e64e38
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.get.basic.html
@@ -0,0 +1,27 @@
+
+
+OffscreenCanvas test: 2d.imageData.get.basic
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.imageData.get.basic
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              getImageData() exists and returns something
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.get.basic.worker.js b/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.get.basic.worker.js
new file mode 100644
index 0000000000..f28268be17
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.get.basic.worker.js
@@ -0,0 +1,22 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.imageData.get.basic
+// Description:getImageData() exists and returns something
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("getImageData() exists and returns something");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  _assertDifferent(ctx.getImageData(0, 0, 100, 50), null, "ctx.getImageData(0, 0, 100, 50)", "null");
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.get.clamp.html b/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.get.clamp.html
new file mode 100644
index 0000000000..825d00a5c4
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.get.clamp.html
@@ -0,0 +1,38 @@
+
+
+OffscreenCanvas test: 2d.imageData.get.clamp
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.imageData.get.clamp
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              getImageData() clamps colors to the range [0, 255]
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.get.clamp.worker.js b/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.get.clamp.worker.js
new file mode 100644
index 0000000000..fb4e76584a
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.get.clamp.worker.js
@@ -0,0 +1,33 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.imageData.get.clamp
+// Description:getImageData() clamps colors to the range [0, 255]
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("getImageData() clamps colors to the range [0, 255]");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = 'rgb(-100, -200, -300)';
+  ctx.fillRect(0, 0, 100, 50);
+  ctx.fillStyle = 'rgb(256, 300, 400)';
+  ctx.fillRect(20, 10, 60, 10);
+  var imgdata1 = ctx.getImageData(10, 5, 1, 1);
+  _assertSame(imgdata1.data[0], 0, "imgdata1.data[\""+(0)+"\"]", "0");
+  _assertSame(imgdata1.data[1], 0, "imgdata1.data[\""+(1)+"\"]", "0");
+  _assertSame(imgdata1.data[2], 0, "imgdata1.data[\""+(2)+"\"]", "0");
+  var imgdata2 = ctx.getImageData(30, 15, 1, 1);
+  _assertSame(imgdata2.data[0], 255, "imgdata2.data[\""+(0)+"\"]", "255");
+  _assertSame(imgdata2.data[1], 255, "imgdata2.data[\""+(1)+"\"]", "255");
+  _assertSame(imgdata2.data[2], 255, "imgdata2.data[\""+(2)+"\"]", "255");
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.get.double.html b/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.get.double.html
new file mode 100644
index 0000000000..64fc7c7c12
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.get.double.html
@@ -0,0 +1,32 @@
+
+
+OffscreenCanvas test: 2d.imageData.get.double
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.imageData.get.double
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              createImageData(w, h) double is converted to long
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.get.double.worker.js b/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.get.double.worker.js
new file mode 100644
index 0000000000..316dce7f80
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.get.double.worker.js
@@ -0,0 +1,27 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.imageData.get.double
+// Description:createImageData(w, h) double is converted to long
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("createImageData(w, h) double is converted to long");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  var imgdata1 = ctx.getImageData(0, 0, 10.01, 10.99);
+  var imgdata2 = ctx.getImageData(0, 0, -10.01, -10.99);
+  _assertSame(imgdata1.width, 10, "imgdata1.width", "10");
+  _assertSame(imgdata1.height, 10, "imgdata1.height", "10");
+  _assertSame(imgdata2.width, 10, "imgdata2.width", "10");
+  _assertSame(imgdata2.height, 10, "imgdata2.height", "10");
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.get.invalid.html b/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.get.invalid.html
new file mode 100644
index 0000000000..dfc5d106ee
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.get.invalid.html
@@ -0,0 +1,45 @@
+
+
+OffscreenCanvas test: 2d.imageData.get.invalid
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.imageData.get.invalid
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Verify getImageData() behavior in invalid cases.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.get.invalid.worker.js b/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.get.invalid.worker.js
new file mode 100644
index 0000000000..5206899b6a
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.get.invalid.worker.js
@@ -0,0 +1,40 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.imageData.get.invalid
+// Description:Verify getImageData() behavior in invalid cases.
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("Verify getImageData() behavior in invalid cases.");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  imageData = ctx.getImageData(0,0,2,2);
+  var testValues = [NaN, true, false, "\"garbage\"", "-1",
+                    "0", "1", "2", Infinity, -Infinity,
+                    -5, -0.5, 0, 0.5, 5,
+                    5.4, 255, 256, null, undefined];
+  var testResults = [0, 1, 0, 0, 0,
+                     0, 1, 2, 255, 0,
+                     0, 0, 0, 0, 5,
+                     5, 255, 255, 0, 0];
+  for (var i = 0; i < testValues.length; i++) {
+      imageData.data[0] = testValues[i];
+      _assert(imageData.data[0] == testResults[i], "imageData.data[\""+(0)+"\"] == testResults[\""+(i)+"\"]");
+  }
+  imageData.data['foo']='garbage';
+  _assert(imageData.data['foo'] == 'garbage', "imageData.data['foo'] == 'garbage'");
+  imageData.data[-1]='garbage';
+  _assert(imageData.data[-1] == undefined, "imageData.data[-1] == undefined");
+  imageData.data[17]='garbage';
+  _assert(imageData.data[17] == undefined, "imageData.data[\""+(17)+"\"] == undefined");
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.get.large.crash.html b/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.get.large.crash.html
new file mode 100644
index 0000000000..3e05c3c92b
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.get.large.crash.html
@@ -0,0 +1,27 @@
+
+
+OffscreenCanvas test: 2d.imageData.get.large.crash
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.imageData.get.large.crash
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Test that canvas crash when image data cannot be allocated.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.get.large.crash.worker.js b/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.get.large.crash.worker.js
new file mode 100644
index 0000000000..62c1771dba
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.get.large.crash.worker.js
@@ -0,0 +1,22 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.imageData.get.large.crash
+// Description:Test that canvas crash when image data cannot be allocated.
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("Test that canvas crash when image data cannot be allocated.");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  assert_throws_js(TypeError, function() { ctx.getImageData(10, 0xffffffff, 2147483647, 10); });
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.get.length.html b/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.get.length.html
new file mode 100644
index 0000000000..47b5fcd166
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.get.length.html
@@ -0,0 +1,28 @@
+
+
+OffscreenCanvas test: 2d.imageData.get.length
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.imageData.get.length
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              getImageData() returns a correctly-sized Uint8ClampedArray
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.get.length.worker.js b/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.get.length.worker.js
new file mode 100644
index 0000000000..74ed6015f0
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.get.length.worker.js
@@ -0,0 +1,23 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.imageData.get.length
+// Description:getImageData() returns a correctly-sized Uint8ClampedArray
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("getImageData() returns a correctly-sized Uint8ClampedArray");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  var imgdata = ctx.getImageData(0, 0, 10, 10);
+  _assertSame(imgdata.data.length, imgdata.width*imgdata.height*4, "imgdata.data.length", "imgdata.width*imgdata.height*4");
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.get.nonfinite.html b/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.get.nonfinite.html
new file mode 100644
index 0000000000..62cad61848
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.get.nonfinite.html
@@ -0,0 +1,75 @@
+
+
+OffscreenCanvas test: 2d.imageData.get.nonfinite
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.imageData.get.nonfinite
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              getImageData() throws TypeError if arguments are not finite
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Defined in "Web IDL" (draft)
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.get.nonfinite.worker.js b/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.get.nonfinite.worker.js
new file mode 100644
index 0000000000..98b4913a13
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.get.nonfinite.worker.js
@@ -0,0 +1,70 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.imageData.get.nonfinite
+// Description:getImageData() throws TypeError if arguments are not finite
+// Note:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Defined in "Web IDL" (draft)
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("getImageData() throws TypeError if arguments are not finite");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  assert_throws_js(TypeError, function() { ctx.getImageData(Infinity, 10, 10, 10); });
+  assert_throws_js(TypeError, function() { ctx.getImageData(-Infinity, 10, 10, 10); });
+  assert_throws_js(TypeError, function() { ctx.getImageData(NaN, 10, 10, 10); });
+  assert_throws_js(TypeError, function() { ctx.getImageData(10, Infinity, 10, 10); });
+  assert_throws_js(TypeError, function() { ctx.getImageData(10, -Infinity, 10, 10); });
+  assert_throws_js(TypeError, function() { ctx.getImageData(10, NaN, 10, 10); });
+  assert_throws_js(TypeError, function() { ctx.getImageData(10, 10, Infinity, 10); });
+  assert_throws_js(TypeError, function() { ctx.getImageData(10, 10, -Infinity, 10); });
+  assert_throws_js(TypeError, function() { ctx.getImageData(10, 10, NaN, 10); });
+  assert_throws_js(TypeError, function() { ctx.getImageData(10, 10, 10, Infinity); });
+  assert_throws_js(TypeError, function() { ctx.getImageData(10, 10, 10, -Infinity); });
+  assert_throws_js(TypeError, function() { ctx.getImageData(10, 10, 10, NaN); });
+  assert_throws_js(TypeError, function() { ctx.getImageData(Infinity, Infinity, 10, 10); });
+  assert_throws_js(TypeError, function() { ctx.getImageData(Infinity, Infinity, Infinity, 10); });
+  assert_throws_js(TypeError, function() { ctx.getImageData(Infinity, Infinity, Infinity, Infinity); });
+  assert_throws_js(TypeError, function() { ctx.getImageData(Infinity, Infinity, 10, Infinity); });
+  assert_throws_js(TypeError, function() { ctx.getImageData(Infinity, 10, Infinity, 10); });
+  assert_throws_js(TypeError, function() { ctx.getImageData(Infinity, 10, Infinity, Infinity); });
+  assert_throws_js(TypeError, function() { ctx.getImageData(Infinity, 10, 10, Infinity); });
+  assert_throws_js(TypeError, function() { ctx.getImageData(10, Infinity, Infinity, 10); });
+  assert_throws_js(TypeError, function() { ctx.getImageData(10, Infinity, Infinity, Infinity); });
+  assert_throws_js(TypeError, function() { ctx.getImageData(10, Infinity, 10, Infinity); });
+  assert_throws_js(TypeError, function() { ctx.getImageData(10, 10, Infinity, Infinity); });
+  var posinfobj = { valueOf: function() { return Infinity; } },
+      neginfobj = { valueOf: function() { return -Infinity; } },
+      nanobj = { valueOf: function() { return -Infinity; } };
+  assert_throws_js(TypeError, function() { ctx.getImageData(posinfobj, 10, 10, 10); });
+  assert_throws_js(TypeError, function() { ctx.getImageData(neginfobj, 10, 10, 10); });
+  assert_throws_js(TypeError, function() { ctx.getImageData(nanobj, 10, 10, 10); });
+  assert_throws_js(TypeError, function() { ctx.getImageData(10, posinfobj, 10, 10); });
+  assert_throws_js(TypeError, function() { ctx.getImageData(10, neginfobj, 10, 10); });
+  assert_throws_js(TypeError, function() { ctx.getImageData(10, nanobj, 10, 10); });
+  assert_throws_js(TypeError, function() { ctx.getImageData(10, 10, posinfobj, 10); });
+  assert_throws_js(TypeError, function() { ctx.getImageData(10, 10, neginfobj, 10); });
+  assert_throws_js(TypeError, function() { ctx.getImageData(10, 10, nanobj, 10); });
+  assert_throws_js(TypeError, function() { ctx.getImageData(10, 10, 10, posinfobj); });
+  assert_throws_js(TypeError, function() { ctx.getImageData(10, 10, 10, neginfobj); });
+  assert_throws_js(TypeError, function() { ctx.getImageData(10, 10, 10, nanobj); });
+  assert_throws_js(TypeError, function() { ctx.getImageData(posinfobj, posinfobj, 10, 10); });
+  assert_throws_js(TypeError, function() { ctx.getImageData(posinfobj, posinfobj, posinfobj, 10); });
+  assert_throws_js(TypeError, function() { ctx.getImageData(posinfobj, posinfobj, posinfobj, posinfobj); });
+  assert_throws_js(TypeError, function() { ctx.getImageData(posinfobj, posinfobj, 10, posinfobj); });
+  assert_throws_js(TypeError, function() { ctx.getImageData(posinfobj, 10, posinfobj, 10); });
+  assert_throws_js(TypeError, function() { ctx.getImageData(posinfobj, 10, posinfobj, posinfobj); });
+  assert_throws_js(TypeError, function() { ctx.getImageData(posinfobj, 10, 10, posinfobj); });
+  assert_throws_js(TypeError, function() { ctx.getImageData(10, posinfobj, posinfobj, 10); });
+  assert_throws_js(TypeError, function() { ctx.getImageData(10, posinfobj, posinfobj, posinfobj); });
+  assert_throws_js(TypeError, function() { ctx.getImageData(10, posinfobj, 10, posinfobj); });
+  assert_throws_js(TypeError, function() { ctx.getImageData(10, 10, posinfobj, posinfobj); });
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.get.nonpremul.html b/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.get.nonpremul.html
new file mode 100644
index 0000000000..3a97d9dc05
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.get.nonpremul.html
@@ -0,0 +1,34 @@
+
+
+OffscreenCanvas test: 2d.imageData.get.nonpremul
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.imageData.get.nonpremul
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              getImageData() returns non-premultiplied colors
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.get.nonpremul.worker.js b/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.get.nonpremul.worker.js
new file mode 100644
index 0000000000..1a8da5efb0
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.get.nonpremul.worker.js
@@ -0,0 +1,29 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.imageData.get.nonpremul
+// Description:getImageData() returns non-premultiplied colors
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("getImageData() returns non-premultiplied colors");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = 'rgba(255, 255, 255, 0.5)';
+  ctx.fillRect(0, 0, 100, 50);
+  var imgdata = ctx.getImageData(10, 10, 10, 10);
+  _assert(imgdata.data[0] > 200, "imgdata.data[\""+(0)+"\"] > 200");
+  _assert(imgdata.data[1] > 200, "imgdata.data[\""+(1)+"\"] > 200");
+  _assert(imgdata.data[2] > 200, "imgdata.data[\""+(2)+"\"] > 200");
+  _assert(imgdata.data[3] > 100, "imgdata.data[\""+(3)+"\"] > 100");
+  _assert(imgdata.data[3] < 200, "imgdata.data[\""+(3)+"\"] < 200");
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.get.order.alpha.html b/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.get.order.alpha.html
new file mode 100644
index 0000000000..04eb67902f
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.get.order.alpha.html
@@ -0,0 +1,31 @@
+
+
+OffscreenCanvas test: 2d.imageData.get.order.alpha
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.imageData.get.order.alpha
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              getImageData() returns A in the fourth component
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.get.order.alpha.worker.js b/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.get.order.alpha.worker.js
new file mode 100644
index 0000000000..4338436a6d
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.get.order.alpha.worker.js
@@ -0,0 +1,26 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.imageData.get.order.alpha
+// Description:getImageData() returns A in the fourth component
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("getImageData() returns A in the fourth component");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = 'rgba(0, 0, 0, 0.5)';
+  ctx.fillRect(0, 0, 100, 50);
+  var imgdata = ctx.getImageData(0, 0, 10, 10);
+  _assert(imgdata.data[3] < 200, "imgdata.data[\""+(3)+"\"] < 200");
+  _assert(imgdata.data[3] > 100, "imgdata.data[\""+(3)+"\"] > 100");
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.get.order.cols.html b/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.get.order.cols.html
new file mode 100644
index 0000000000..f5b315c60a
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.get.order.cols.html
@@ -0,0 +1,34 @@
+
+
+OffscreenCanvas test: 2d.imageData.get.order.cols
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.imageData.get.order.cols
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              getImageData() returns leftmost columns first
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.get.order.cols.worker.js b/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.get.order.cols.worker.js
new file mode 100644
index 0000000000..6a070e2516
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.get.order.cols.worker.js
@@ -0,0 +1,29 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.imageData.get.order.cols
+// Description:getImageData() returns leftmost columns first
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("getImageData() returns leftmost columns first");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#fff';
+  ctx.fillRect(0, 0, 100, 50);
+  ctx.fillStyle = '#000';
+  ctx.fillRect(0, 0, 2, 50);
+  var imgdata = ctx.getImageData(0, 0, 10, 10);
+  _assertSame(imgdata.data[0], 0, "imgdata.data[\""+(0)+"\"]", "0");
+  _assertSame(imgdata.data[Math.round(imgdata.width/2*4)], 255, "imgdata.data[Math.round(imgdata.width/2*4)]", "255");
+  _assertSame(imgdata.data[Math.round((imgdata.height/2)*imgdata.width*4)], 0, "imgdata.data[Math.round((imgdata.height/2)*imgdata.width*4)]", "0");
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.get.order.rgb.html b/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.get.order.rgb.html
new file mode 100644
index 0000000000..661b437fb1
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.get.order.rgb.html
@@ -0,0 +1,37 @@
+
+
+OffscreenCanvas test: 2d.imageData.get.order.rgb
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.imageData.get.order.rgb
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              getImageData() returns R then G then B
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.get.order.rgb.worker.js b/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.get.order.rgb.worker.js
new file mode 100644
index 0000000000..4e5974f9f8
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.get.order.rgb.worker.js
@@ -0,0 +1,32 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.imageData.get.order.rgb
+// Description:getImageData() returns R then G then B
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("getImageData() returns R then G then B");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#48c';
+  ctx.fillRect(0, 0, 100, 50);
+  var imgdata = ctx.getImageData(0, 0, 10, 10);
+  _assertSame(imgdata.data[0], 0x44, "imgdata.data[\""+(0)+"\"]", "0x44");
+  _assertSame(imgdata.data[1], 0x88, "imgdata.data[\""+(1)+"\"]", "0x88");
+  _assertSame(imgdata.data[2], 0xCC, "imgdata.data[\""+(2)+"\"]", "0xCC");
+  _assertSame(imgdata.data[3], 255, "imgdata.data[\""+(3)+"\"]", "255");
+  _assertSame(imgdata.data[4], 0x44, "imgdata.data[\""+(4)+"\"]", "0x44");
+  _assertSame(imgdata.data[5], 0x88, "imgdata.data[\""+(5)+"\"]", "0x88");
+  _assertSame(imgdata.data[6], 0xCC, "imgdata.data[\""+(6)+"\"]", "0xCC");
+  _assertSame(imgdata.data[7], 255, "imgdata.data[\""+(7)+"\"]", "255");
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.get.order.rows.html b/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.get.order.rows.html
new file mode 100644
index 0000000000..6d8ee2eba5
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.get.order.rows.html
@@ -0,0 +1,34 @@
+
+
+OffscreenCanvas test: 2d.imageData.get.order.rows
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.imageData.get.order.rows
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              getImageData() returns topmost rows first
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.get.order.rows.worker.js b/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.get.order.rows.worker.js
new file mode 100644
index 0000000000..1d3226a503
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.get.order.rows.worker.js
@@ -0,0 +1,29 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.imageData.get.order.rows
+// Description:getImageData() returns topmost rows first
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("getImageData() returns topmost rows first");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#fff';
+  ctx.fillRect(0, 0, 100, 50);
+  ctx.fillStyle = '#000';
+  ctx.fillRect(0, 0, 100, 2);
+  var imgdata = ctx.getImageData(0, 0, 10, 10);
+  _assertSame(imgdata.data[0], 0, "imgdata.data[\""+(0)+"\"]", "0");
+  _assertSame(imgdata.data[Math.floor(imgdata.width/2*4)], 0, "imgdata.data[Math.floor(imgdata.width/2*4)]", "0");
+  _assertSame(imgdata.data[(imgdata.height/2)*imgdata.width*4], 255, "imgdata.data[(imgdata.height/2)*imgdata.width*4]", "255");
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.get.range.html b/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.get.range.html
new file mode 100644
index 0000000000..8db1a42ca1
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.get.range.html
@@ -0,0 +1,34 @@
+
+
+OffscreenCanvas test: 2d.imageData.get.range
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.imageData.get.range
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              getImageData() returns values in the range [0, 255]
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.get.range.worker.js b/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.get.range.worker.js
new file mode 100644
index 0000000000..2e962beeae
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.get.range.worker.js
@@ -0,0 +1,29 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.imageData.get.range
+// Description:getImageData() returns values in the range [0, 255]
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("getImageData() returns values in the range [0, 255]");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#000';
+  ctx.fillRect(0, 0, 100, 50);
+  ctx.fillStyle = '#fff';
+  ctx.fillRect(20, 10, 60, 10);
+  var imgdata1 = ctx.getImageData(10, 5, 1, 1);
+  _assertSame(imgdata1.data[0], 0, "imgdata1.data[\""+(0)+"\"]", "0");
+  var imgdata2 = ctx.getImageData(30, 15, 1, 1);
+  _assertSame(imgdata2.data[0], 255, "imgdata2.data[\""+(0)+"\"]", "255");
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.get.rounding.html b/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.get.rounding.html
new file mode 100644
index 0000000000..f939ba82df
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.get.rounding.html
@@ -0,0 +1,45 @@
+
+
+OffscreenCanvas test: 2d.imageData.get.rounding
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.imageData.get.rounding
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Test the handling of non-integer source coordinates in getImageData().
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.get.rounding.worker.js b/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.get.rounding.worker.js
new file mode 100644
index 0000000000..b2cd08ade2
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.get.rounding.worker.js
@@ -0,0 +1,40 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.imageData.get.rounding
+// Description:Test the handling of non-integer source coordinates in getImageData().
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("Test the handling of non-integer source coordinates in getImageData().");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  function testDimensions(sx, sy, sw, sh, width, height)
+  {
+      imageData = ctx.getImageData(sx, sy, sw, sh);
+      _assert(imageData.width == width, "imageData.width == width");
+      _assert(imageData.height == height, "imageData.height == height");
+  }
+
+  testDimensions(0, 0, 20, 10, 20, 10);
+
+  testDimensions(.1, .2, 20, 10, 20, 10);
+  testDimensions(.9, .8, 20, 10, 20, 10);
+
+  testDimensions(0, 0, 20.9, 10.9, 20, 10);
+  testDimensions(0, 0, 20.1, 10.1, 20, 10);
+
+  testDimensions(-1, -1, 20, 10, 20, 10);
+
+  testDimensions(-1.1, 0, 20, 10, 20, 10);
+  testDimensions(-1.9,  0, 20, 10, 20, 10);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.get.source.negative.html b/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.get.source.negative.html
new file mode 100644
index 0000000000..a4b9c7e41c
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.get.source.negative.html
@@ -0,0 +1,46 @@
+
+
+OffscreenCanvas test: 2d.imageData.get.source.negative
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.imageData.get.source.negative
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              getImageData() works with negative width and height, and returns top-to-bottom left-to-right
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.get.source.negative.worker.js b/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.get.source.negative.worker.js
new file mode 100644
index 0000000000..62929918ec
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.get.source.negative.worker.js
@@ -0,0 +1,41 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.imageData.get.source.negative
+// Description:getImageData() works with negative width and height, and returns top-to-bottom left-to-right
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("getImageData() works with negative width and height, and returns top-to-bottom left-to-right");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#000';
+  ctx.fillRect(0, 0, 100, 50);
+  ctx.fillStyle = '#fff';
+  ctx.fillRect(20, 10, 60, 10);
+
+  var imgdata1 = ctx.getImageData(85, 25, -10, -10);
+  _assertSame(imgdata1.data[0], 255, "imgdata1.data[\""+(0)+"\"]", "255");
+  _assertSame(imgdata1.data[1], 255, "imgdata1.data[\""+(1)+"\"]", "255");
+  _assertSame(imgdata1.data[2], 255, "imgdata1.data[\""+(2)+"\"]", "255");
+  _assertSame(imgdata1.data[3], 255, "imgdata1.data[\""+(3)+"\"]", "255");
+  _assertSame(imgdata1.data[imgdata1.data.length-4+0], 0, "imgdata1.data[imgdata1.data.length-4+0]", "0");
+  _assertSame(imgdata1.data[imgdata1.data.length-4+1], 0, "imgdata1.data[imgdata1.data.length-4+1]", "0");
+  _assertSame(imgdata1.data[imgdata1.data.length-4+2], 0, "imgdata1.data[imgdata1.data.length-4+2]", "0");
+  _assertSame(imgdata1.data[imgdata1.data.length-4+3], 255, "imgdata1.data[imgdata1.data.length-4+3]", "255");
+
+  var imgdata2 = ctx.getImageData(0, 0, -1, -1);
+  _assertSame(imgdata2.data[0], 0, "imgdata2.data[\""+(0)+"\"]", "0");
+  _assertSame(imgdata2.data[1], 0, "imgdata2.data[\""+(1)+"\"]", "0");
+  _assertSame(imgdata2.data[2], 0, "imgdata2.data[\""+(2)+"\"]", "0");
+  _assertSame(imgdata2.data[3], 0, "imgdata2.data[\""+(3)+"\"]", "0");
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.get.source.outside.html b/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.get.source.outside.html
new file mode 100644
index 0000000000..ca11da80d5
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.get.source.outside.html
@@ -0,0 +1,86 @@
+
+
+OffscreenCanvas test: 2d.imageData.get.source.outside
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.imageData.get.source.outside
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              getImageData() returns transparent black outside the canvas
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.get.source.outside.worker.js b/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.get.source.outside.worker.js
new file mode 100644
index 0000000000..35fa83d668
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.get.source.outside.worker.js
@@ -0,0 +1,81 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.imageData.get.source.outside
+// Description:getImageData() returns transparent black outside the canvas
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("getImageData() returns transparent black outside the canvas");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#08f';
+  ctx.fillRect(0, 0, 100, 50);
+
+  var imgdata1 = ctx.getImageData(-10, 5, 1, 1);
+  _assertSame(imgdata1.data[0], 0, "imgdata1.data[\""+(0)+"\"]", "0");
+  _assertSame(imgdata1.data[1], 0, "imgdata1.data[\""+(1)+"\"]", "0");
+  _assertSame(imgdata1.data[2], 0, "imgdata1.data[\""+(2)+"\"]", "0");
+  _assertSame(imgdata1.data[3], 0, "imgdata1.data[\""+(3)+"\"]", "0");
+
+  var imgdata2 = ctx.getImageData(10, -5, 1, 1);
+  _assertSame(imgdata2.data[0], 0, "imgdata2.data[\""+(0)+"\"]", "0");
+  _assertSame(imgdata2.data[1], 0, "imgdata2.data[\""+(1)+"\"]", "0");
+  _assertSame(imgdata2.data[2], 0, "imgdata2.data[\""+(2)+"\"]", "0");
+  _assertSame(imgdata2.data[3], 0, "imgdata2.data[\""+(3)+"\"]", "0");
+
+  var imgdata3 = ctx.getImageData(200, 5, 1, 1);
+  _assertSame(imgdata3.data[0], 0, "imgdata3.data[\""+(0)+"\"]", "0");
+  _assertSame(imgdata3.data[1], 0, "imgdata3.data[\""+(1)+"\"]", "0");
+  _assertSame(imgdata3.data[2], 0, "imgdata3.data[\""+(2)+"\"]", "0");
+  _assertSame(imgdata3.data[3], 0, "imgdata3.data[\""+(3)+"\"]", "0");
+
+  var imgdata4 = ctx.getImageData(10, 60, 1, 1);
+  _assertSame(imgdata4.data[0], 0, "imgdata4.data[\""+(0)+"\"]", "0");
+  _assertSame(imgdata4.data[1], 0, "imgdata4.data[\""+(1)+"\"]", "0");
+  _assertSame(imgdata4.data[2], 0, "imgdata4.data[\""+(2)+"\"]", "0");
+  _assertSame(imgdata4.data[3], 0, "imgdata4.data[\""+(3)+"\"]", "0");
+
+  var imgdata5 = ctx.getImageData(100, 10, 1, 1);
+  _assertSame(imgdata5.data[0], 0, "imgdata5.data[\""+(0)+"\"]", "0");
+  _assertSame(imgdata5.data[1], 0, "imgdata5.data[\""+(1)+"\"]", "0");
+  _assertSame(imgdata5.data[2], 0, "imgdata5.data[\""+(2)+"\"]", "0");
+  _assertSame(imgdata5.data[3], 0, "imgdata5.data[\""+(3)+"\"]", "0");
+
+  var imgdata6 = ctx.getImageData(0, 10, 1, 1);
+  _assertSame(imgdata6.data[0], 0, "imgdata6.data[\""+(0)+"\"]", "0");
+  _assertSame(imgdata6.data[1], 136, "imgdata6.data[\""+(1)+"\"]", "136");
+  _assertSame(imgdata6.data[2], 255, "imgdata6.data[\""+(2)+"\"]", "255");
+  _assertSame(imgdata6.data[3], 255, "imgdata6.data[\""+(3)+"\"]", "255");
+
+  var imgdata7 = ctx.getImageData(-10, 10, 20, 20);
+  _assertSame(imgdata7.data[ 0*4+0], 0, "imgdata7.data[ 0*4+0]", "0");
+  _assertSame(imgdata7.data[ 0*4+1], 0, "imgdata7.data[ 0*4+1]", "0");
+  _assertSame(imgdata7.data[ 0*4+2], 0, "imgdata7.data[ 0*4+2]", "0");
+  _assertSame(imgdata7.data[ 0*4+3], 0, "imgdata7.data[ 0*4+3]", "0");
+  _assertSame(imgdata7.data[ 9*4+0], 0, "imgdata7.data[ 9*4+0]", "0");
+  _assertSame(imgdata7.data[ 9*4+1], 0, "imgdata7.data[ 9*4+1]", "0");
+  _assertSame(imgdata7.data[ 9*4+2], 0, "imgdata7.data[ 9*4+2]", "0");
+  _assertSame(imgdata7.data[ 9*4+3], 0, "imgdata7.data[ 9*4+3]", "0");
+  _assertSame(imgdata7.data[10*4+0], 0, "imgdata7.data[10*4+0]", "0");
+  _assertSame(imgdata7.data[10*4+1], 136, "imgdata7.data[10*4+1]", "136");
+  _assertSame(imgdata7.data[10*4+2], 255, "imgdata7.data[10*4+2]", "255");
+  _assertSame(imgdata7.data[10*4+3], 255, "imgdata7.data[10*4+3]", "255");
+  _assertSame(imgdata7.data[19*4+0], 0, "imgdata7.data[19*4+0]", "0");
+  _assertSame(imgdata7.data[19*4+1], 136, "imgdata7.data[19*4+1]", "136");
+  _assertSame(imgdata7.data[19*4+2], 255, "imgdata7.data[19*4+2]", "255");
+  _assertSame(imgdata7.data[19*4+3], 255, "imgdata7.data[19*4+3]", "255");
+  _assertSame(imgdata7.data[20*4+0], 0, "imgdata7.data[20*4+0]", "0");
+  _assertSame(imgdata7.data[20*4+1], 0, "imgdata7.data[20*4+1]", "0");
+  _assertSame(imgdata7.data[20*4+2], 0, "imgdata7.data[20*4+2]", "0");
+  _assertSame(imgdata7.data[20*4+3], 0, "imgdata7.data[20*4+3]", "0");
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.get.source.size.html b/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.get.source.size.html
new file mode 100644
index 0000000000..6cb848a718
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.get.source.size.html
@@ -0,0 +1,30 @@
+
+
+OffscreenCanvas test: 2d.imageData.get.source.size
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.imageData.get.source.size
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              getImageData() returns bigger ImageData for bigger source rectangle
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.get.source.size.worker.js b/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.get.source.size.worker.js
new file mode 100644
index 0000000000..e54d75b97a
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.get.source.size.worker.js
@@ -0,0 +1,25 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.imageData.get.source.size
+// Description:getImageData() returns bigger ImageData for bigger source rectangle
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("getImageData() returns bigger ImageData for bigger source rectangle");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  var imgdata1 = ctx.getImageData(0, 0, 10, 10);
+  var imgdata2 = ctx.getImageData(0, 0, 20, 20);
+  _assert(imgdata2.width > imgdata1.width, "imgdata2.width > imgdata1.width");
+  _assert(imgdata2.height > imgdata1.height, "imgdata2.height > imgdata1.height");
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.get.unaffected.html b/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.get.unaffected.html
new file mode 100644
index 0000000000..66a0b80fd7
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.get.unaffected.html
@@ -0,0 +1,42 @@
+
+
+OffscreenCanvas test: 2d.imageData.get.unaffected
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.imageData.get.unaffected
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              getImageData() is not affected by context state
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.get.unaffected.worker.js b/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.get.unaffected.worker.js
new file mode 100644
index 0000000000..8bf0dddb06
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.get.unaffected.worker.js
@@ -0,0 +1,37 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.imageData.get.unaffected
+// Description:getImageData() is not affected by context state
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("getImageData() is not affected by context state");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#0f0';
+  ctx.fillRect(0, 0, 50, 50)
+  ctx.fillStyle = '#f00';
+  ctx.fillRect(50, 0, 50, 50)
+  ctx.save();
+  ctx.translate(50, 0);
+  ctx.globalAlpha = 0.1;
+  ctx.globalCompositeOperation = 'destination-atop';
+  ctx.shadowColor = '#f00';
+  ctx.rect(0, 0, 5, 5);
+  ctx.clip();
+  var imgdata = ctx.getImageData(0, 0, 50, 50);
+  ctx.restore();
+  ctx.putImageData(imgdata, 50, 0);
+  _assertPixelApprox(canvas, 25,25, 0,255,0,255, 2);
+  _assertPixelApprox(canvas, 75,25, 0,255,0,255, 2);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.get.zero.html b/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.get.zero.html
new file mode 100644
index 0000000000..042a8bc5f5
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.get.zero.html
@@ -0,0 +1,33 @@
+
+
+OffscreenCanvas test: 2d.imageData.get.zero
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.imageData.get.zero
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              getImageData() throws INDEX_SIZE_ERR if size is zero
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.get.zero.worker.js b/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.get.zero.worker.js
new file mode 100644
index 0000000000..ed31030d3c
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.get.zero.worker.js
@@ -0,0 +1,28 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.imageData.get.zero
+// Description:getImageData() throws INDEX_SIZE_ERR if size is zero
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("getImageData() throws INDEX_SIZE_ERR if size is zero");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  assert_throws_dom("INDEX_SIZE_ERR", function() { ctx.getImageData(1, 1, 10, 0); });
+  assert_throws_dom("INDEX_SIZE_ERR", function() { ctx.getImageData(1, 1, 0, 10); });
+  assert_throws_dom("INDEX_SIZE_ERR", function() { ctx.getImageData(1, 1, 0, 0); });
+  assert_throws_dom("INDEX_SIZE_ERR", function() { ctx.getImageData(1, 1, 0.1, 10); });
+  assert_throws_dom("INDEX_SIZE_ERR", function() { ctx.getImageData(1, 1, 10, 0.99); });
+  assert_throws_dom("INDEX_SIZE_ERR", function() { ctx.getImageData(1, 1, -0.1, 10); });
+  assert_throws_dom("INDEX_SIZE_ERR", function() { ctx.getImageData(1, 1, 10, -0.99); });
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.object.clamp.html b/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.object.clamp.html
new file mode 100644
index 0000000000..aa6073eedf
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.object.clamp.html
@@ -0,0 +1,55 @@
+
+
+OffscreenCanvas test: 2d.imageData.object.clamp
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.imageData.object.clamp
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              ImageData.data clamps numbers to [0, 255]
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.object.clamp.worker.js b/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.object.clamp.worker.js
new file mode 100644
index 0000000000..260198fe2f
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.object.clamp.worker.js
@@ -0,0 +1,50 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.imageData.object.clamp
+// Description:ImageData.data clamps numbers to [0, 255]
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("ImageData.data clamps numbers to [0, 255]");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  var imgdata = ctx.getImageData(0, 0, 10, 10);
+
+  imgdata.data[0] = 100;
+  imgdata.data[0] = 300;
+  _assertSame(imgdata.data[0], 255, "imgdata.data[\""+(0)+"\"]", "255");
+  imgdata.data[0] = 100;
+  imgdata.data[0] = -100;
+  _assertSame(imgdata.data[0], 0, "imgdata.data[\""+(0)+"\"]", "0");
+
+  imgdata.data[0] = 100;
+  imgdata.data[0] = 200+Math.pow(2, 32);
+  _assertSame(imgdata.data[0], 255, "imgdata.data[\""+(0)+"\"]", "255");
+  imgdata.data[0] = 100;
+  imgdata.data[0] = -200-Math.pow(2, 32);
+  _assertSame(imgdata.data[0], 0, "imgdata.data[\""+(0)+"\"]", "0");
+
+  imgdata.data[0] = 100;
+  imgdata.data[0] = Math.pow(10, 39);
+  _assertSame(imgdata.data[0], 255, "imgdata.data[\""+(0)+"\"]", "255");
+  imgdata.data[0] = 100;
+  imgdata.data[0] = -Math.pow(10, 39);
+  _assertSame(imgdata.data[0], 0, "imgdata.data[\""+(0)+"\"]", "0");
+
+  imgdata.data[0] = 100;
+  imgdata.data[0] = -Infinity;
+  _assertSame(imgdata.data[0], 0, "imgdata.data[\""+(0)+"\"]", "0");
+  imgdata.data[0] = 100;
+  imgdata.data[0] = Infinity;
+  _assertSame(imgdata.data[0], 255, "imgdata.data[\""+(0)+"\"]", "255");
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.object.nan.html b/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.object.nan.html
new file mode 100644
index 0000000000..af692a7f9f
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.object.nan.html
@@ -0,0 +1,33 @@
+
+
+OffscreenCanvas test: 2d.imageData.object.nan
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.imageData.object.nan
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              ImageData.data converts NaN to 0
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.object.nan.worker.js b/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.object.nan.worker.js
new file mode 100644
index 0000000000..4ebfedb1e8
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.object.nan.worker.js
@@ -0,0 +1,28 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.imageData.object.nan
+// Description:ImageData.data converts NaN to 0
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("ImageData.data converts NaN to 0");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  var imgdata = ctx.getImageData(0, 0, 10, 10);
+  imgdata.data[0] = 100;
+  imgdata.data[0] = NaN;
+  _assertSame(imgdata.data[0], 0, "imgdata.data[\""+(0)+"\"]", "0");
+  imgdata.data[0] = 100;
+  imgdata.data[0] = "cheese";
+  _assertSame(imgdata.data[0], 0, "imgdata.data[\""+(0)+"\"]", "0");
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.object.properties.html b/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.object.properties.html
new file mode 100644
index 0000000000..68a6f63868
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.object.properties.html
@@ -0,0 +1,30 @@
+
+
+OffscreenCanvas test: 2d.imageData.object.properties
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.imageData.object.properties
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              ImageData objects have the right properties
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.object.properties.worker.js b/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.object.properties.worker.js
new file mode 100644
index 0000000000..e428e0d4fc
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.object.properties.worker.js
@@ -0,0 +1,25 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.imageData.object.properties
+// Description:ImageData objects have the right properties
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("ImageData objects have the right properties");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  var imgdata = ctx.getImageData(0, 0, 10, 10);
+  _assertSame(typeof(imgdata.width), 'number', "typeof(imgdata.width)", "'number'");
+  _assertSame(typeof(imgdata.height), 'number', "typeof(imgdata.height)", "'number'");
+  _assertSame(typeof(imgdata.data), 'object', "typeof(imgdata.data)", "'object'");
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.object.readonly.html b/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.object.readonly.html
new file mode 100644
index 0000000000..2ab5f47f64
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.object.readonly.html
@@ -0,0 +1,40 @@
+
+
+OffscreenCanvas test: 2d.imageData.object.readonly
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.imageData.object.readonly
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              ImageData objects properties are read-only
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.object.readonly.worker.js b/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.object.readonly.worker.js
new file mode 100644
index 0000000000..d02f0f319a
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.object.readonly.worker.js
@@ -0,0 +1,35 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.imageData.object.readonly
+// Description:ImageData objects properties are read-only
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("ImageData objects properties are read-only");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  var imgdata = ctx.getImageData(0, 0, 10, 10);
+  var w = imgdata.width;
+  var h = imgdata.height;
+  var d = imgdata.data;
+  imgdata.width = 123;
+  imgdata.height = 123;
+  imgdata.data = [100,100,100,100];
+  _assertSame(imgdata.width, w, "imgdata.width", "w");
+  _assertSame(imgdata.height, h, "imgdata.height", "h");
+  _assertSame(imgdata.data, d, "imgdata.data", "d");
+  _assertSame(imgdata.data[0], 0, "imgdata.data[\""+(0)+"\"]", "0");
+  _assertSame(imgdata.data[1], 0, "imgdata.data[\""+(1)+"\"]", "0");
+  _assertSame(imgdata.data[2], 0, "imgdata.data[\""+(2)+"\"]", "0");
+  _assertSame(imgdata.data[3], 0, "imgdata.data[\""+(3)+"\"]", "0");
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.object.round.html b/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.object.round.html
new file mode 100644
index 0000000000..fbde0cd940
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.object.round.html
@@ -0,0 +1,55 @@
+
+
+OffscreenCanvas test: 2d.imageData.object.round
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.imageData.object.round
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              ImageData.data rounds numbers with round-to-zero
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.object.round.worker.js b/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.object.round.worker.js
new file mode 100644
index 0000000000..8ef3c02793
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.object.round.worker.js
@@ -0,0 +1,50 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.imageData.object.round
+// Description:ImageData.data rounds numbers with round-to-zero
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("ImageData.data rounds numbers with round-to-zero");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  var imgdata = ctx.getImageData(0, 0, 10, 10);
+  imgdata.data[0] = 0.499;
+  _assertSame(imgdata.data[0], 0, "imgdata.data[\""+(0)+"\"]", "0");
+  imgdata.data[0] = 0.5;
+  _assertSame(imgdata.data[0], 0, "imgdata.data[\""+(0)+"\"]", "0");
+  imgdata.data[0] = 0.501;
+  _assertSame(imgdata.data[0], 1, "imgdata.data[\""+(0)+"\"]", "1");
+  imgdata.data[0] = 1.499;
+  _assertSame(imgdata.data[0], 1, "imgdata.data[\""+(0)+"\"]", "1");
+  imgdata.data[0] = 1.5;
+  _assertSame(imgdata.data[0], 2, "imgdata.data[\""+(0)+"\"]", "2");
+  imgdata.data[0] = 1.501;
+  _assertSame(imgdata.data[0], 2, "imgdata.data[\""+(0)+"\"]", "2");
+  imgdata.data[0] = 2.5;
+  _assertSame(imgdata.data[0], 2, "imgdata.data[\""+(0)+"\"]", "2");
+  imgdata.data[0] = 3.5;
+  _assertSame(imgdata.data[0], 4, "imgdata.data[\""+(0)+"\"]", "4");
+  imgdata.data[0] = 252.5;
+  _assertSame(imgdata.data[0], 252, "imgdata.data[\""+(0)+"\"]", "252");
+  imgdata.data[0] = 253.5;
+  _assertSame(imgdata.data[0], 254, "imgdata.data[\""+(0)+"\"]", "254");
+  imgdata.data[0] = 254.5;
+  _assertSame(imgdata.data[0], 254, "imgdata.data[\""+(0)+"\"]", "254");
+  imgdata.data[0] = 256.5;
+  _assertSame(imgdata.data[0], 255, "imgdata.data[\""+(0)+"\"]", "255");
+  imgdata.data[0] = -0.5;
+  _assertSame(imgdata.data[0], 0, "imgdata.data[\""+(0)+"\"]", "0");
+  imgdata.data[0] = -1.5;
+  _assertSame(imgdata.data[0], 0, "imgdata.data[\""+(0)+"\"]", "0");
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.object.set.html b/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.object.set.html
new file mode 100644
index 0000000000..27ed5a3504
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.object.set.html
@@ -0,0 +1,31 @@
+
+
+OffscreenCanvas test: 2d.imageData.object.set
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.imageData.object.set
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              ImageData.data can be modified
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.object.set.worker.js b/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.object.set.worker.js
new file mode 100644
index 0000000000..f9b755f7e2
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.object.set.worker.js
@@ -0,0 +1,26 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.imageData.object.set
+// Description:ImageData.data can be modified
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("ImageData.data can be modified");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  var imgdata = ctx.getImageData(0, 0, 10, 10);
+  imgdata.data[0] = 100;
+  _assertSame(imgdata.data[0], 100, "imgdata.data[\""+(0)+"\"]", "100");
+  imgdata.data[0] = 200;
+  _assertSame(imgdata.data[0], 200, "imgdata.data[\""+(0)+"\"]", "200");
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.object.string.html b/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.object.string.html
new file mode 100644
index 0000000000..a437c475a5
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.object.string.html
@@ -0,0 +1,36 @@
+
+
+OffscreenCanvas test: 2d.imageData.object.string
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.imageData.object.string
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              ImageData.data converts strings to numbers with ToNumber
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.object.string.worker.js b/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.object.string.worker.js
new file mode 100644
index 0000000000..84cff6a48c
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.object.string.worker.js
@@ -0,0 +1,31 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.imageData.object.string
+// Description:ImageData.data converts strings to numbers with ToNumber
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("ImageData.data converts strings to numbers with ToNumber");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  var imgdata = ctx.getImageData(0, 0, 10, 10);
+  imgdata.data[0] = 100;
+  imgdata.data[0] = "110";
+  _assertSame(imgdata.data[0], 110, "imgdata.data[\""+(0)+"\"]", "110");
+  imgdata.data[0] = 100;
+  imgdata.data[0] = "0x78";
+  _assertSame(imgdata.data[0], 120, "imgdata.data[\""+(0)+"\"]", "120");
+  imgdata.data[0] = 100;
+  imgdata.data[0] = " +130e0 ";
+  _assertSame(imgdata.data[0], 130, "imgdata.data[\""+(0)+"\"]", "130");
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.object.undefined.html b/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.object.undefined.html
new file mode 100644
index 0000000000..81462339e9
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.object.undefined.html
@@ -0,0 +1,30 @@
+
+
+OffscreenCanvas test: 2d.imageData.object.undefined
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.imageData.object.undefined
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              ImageData.data converts undefined to 0
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.object.undefined.worker.js b/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.object.undefined.worker.js
new file mode 100644
index 0000000000..825f8c102f
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.object.undefined.worker.js
@@ -0,0 +1,25 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.imageData.object.undefined
+// Description:ImageData.data converts undefined to 0
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("ImageData.data converts undefined to 0");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  var imgdata = ctx.getImageData(0, 0, 10, 10);
+  imgdata.data[0] = 100;
+  imgdata.data[0] = undefined;
+  _assertSame(imgdata.data[0], 0, "imgdata.data[\""+(0)+"\"]", "0");
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.put.alpha.html b/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.put.alpha.html
new file mode 100644
index 0000000000..dcd2d92ab1
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.put.alpha.html
@@ -0,0 +1,33 @@
+
+
+OffscreenCanvas test: 2d.imageData.put.alpha
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.imageData.put.alpha
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              putImageData() puts non-solid image data correctly
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.put.alpha.png b/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.put.alpha.png
new file mode 100644
index 0000000000..5428c65524
Binary files /dev/null and b/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.put.alpha.png differ
diff --git a/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.put.alpha.worker.js b/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.put.alpha.worker.js
new file mode 100644
index 0000000000..25d8047189
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.put.alpha.worker.js
@@ -0,0 +1,28 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.imageData.put.alpha
+// Description:putImageData() puts non-solid image data correctly
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("putImageData() puts non-solid image data correctly");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = 'rgba(0, 255, 0, 0.25)';
+  ctx.fillRect(0, 0, 100, 50)
+  var imgdata = ctx.getImageData(0, 0, 100, 50);
+  ctx.fillStyle = '#f00';
+  ctx.fillRect(0, 0, 100, 50)
+  ctx.putImageData(imgdata, 0, 0);
+  _assertPixelApprox(canvas, 50,25, 0,255,0,64, 2);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.put.basic.html b/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.put.basic.html
new file mode 100644
index 0000000000..257e0330d5
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.put.basic.html
@@ -0,0 +1,33 @@
+
+
+OffscreenCanvas test: 2d.imageData.put.basic
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.imageData.put.basic
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              putImageData() puts image data from getImageData() onto the canvas
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.put.basic.worker.js b/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.put.basic.worker.js
new file mode 100644
index 0000000000..6a68ffa792
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.put.basic.worker.js
@@ -0,0 +1,28 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.imageData.put.basic
+// Description:putImageData() puts image data from getImageData() onto the canvas
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("putImageData() puts image data from getImageData() onto the canvas");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#0f0';
+  ctx.fillRect(0, 0, 100, 50)
+  var imgdata = ctx.getImageData(0, 0, 100, 50);
+  ctx.fillStyle = '#f00';
+  ctx.fillRect(0, 0, 100, 50)
+  ctx.putImageData(imgdata, 0, 0);
+  _assertPixelApprox(canvas, 50,25, 0,255,0,255, 2);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.put.clip.html b/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.put.clip.html
new file mode 100644
index 0000000000..648ded588c
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.put.clip.html
@@ -0,0 +1,37 @@
+
+
+OffscreenCanvas test: 2d.imageData.put.clip
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.imageData.put.clip
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              putImageData() is not affected by clipping regions
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.put.clip.worker.js b/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.put.clip.worker.js
new file mode 100644
index 0000000000..b665edbb33
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.put.clip.worker.js
@@ -0,0 +1,32 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.imageData.put.clip
+// Description:putImageData() is not affected by clipping regions
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("putImageData() is not affected by clipping regions");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#0f0';
+  ctx.fillRect(0, 0, 100, 50)
+  var imgdata = ctx.getImageData(0, 0, 100, 50);
+  ctx.fillStyle = '#f00';
+  ctx.fillRect(0, 0, 100, 50)
+  ctx.beginPath();
+  ctx.rect(0, 0, 50, 50);
+  ctx.clip();
+  ctx.putImageData(imgdata, 0, 0);
+  _assertPixelApprox(canvas, 25,25, 0,255,0,255, 2);
+  _assertPixelApprox(canvas, 75,25, 0,255,0,255, 2);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.put.created.html b/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.put.created.html
new file mode 100644
index 0000000000..08f35117dd
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.put.created.html
@@ -0,0 +1,37 @@
+
+
+OffscreenCanvas test: 2d.imageData.put.created
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.imageData.put.created
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              putImageData() puts image data from createImageData() onto the canvas
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.put.created.worker.js b/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.put.created.worker.js
new file mode 100644
index 0000000000..f249efb4bb
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.put.created.worker.js
@@ -0,0 +1,32 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.imageData.put.created
+// Description:putImageData() puts image data from createImageData() onto the canvas
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("putImageData() puts image data from createImageData() onto the canvas");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  var imgdata = ctx.createImageData(100, 50);
+  for (var i = 0; i < imgdata.data.length; i += 4) {
+      imgdata.data[i] = 0;
+      imgdata.data[i+1] = 255;
+      imgdata.data[i+2] = 0;
+      imgdata.data[i+3] = 255;
+  }
+  ctx.fillStyle = '#f00';
+  ctx.fillRect(0, 0, 100, 50)
+  ctx.putImageData(imgdata, 0, 0);
+  _assertPixelApprox(canvas, 50,25, 0,255,0,255, 2);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.put.cross.html b/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.put.cross.html
new file mode 100644
index 0000000000..cddd0451a4
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.put.cross.html
@@ -0,0 +1,35 @@
+
+
+OffscreenCanvas test: 2d.imageData.put.cross
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.imageData.put.cross
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              putImageData() accepts image data got from a different canvas
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.put.cross.worker.js b/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.put.cross.worker.js
new file mode 100644
index 0000000000..0ec4ed142f
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.put.cross.worker.js
@@ -0,0 +1,30 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.imageData.put.cross
+// Description:putImageData() accepts image data got from a different canvas
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("putImageData() accepts image data got from a different canvas");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  var offscreenCanvas2 = new OffscreenCanvas(100, 50);
+  var ctx2 = offscreenCanvas2.getContext('2d');
+  ctx2.fillStyle = '#0f0';
+  ctx2.fillRect(0, 0, 100, 50)
+  var imgdata = ctx2.getImageData(0, 0, 100, 50);
+  ctx.fillStyle = '#f00';
+  ctx.fillRect(0, 0, 100, 50)
+  ctx.putImageData(imgdata, 0, 0);
+  _assertPixelApprox(canvas, 50,25, 0,255,0,255, 2);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.put.dirty.negative.html b/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.put.dirty.negative.html
new file mode 100644
index 0000000000..cea4d0d477
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.put.dirty.negative.html
@@ -0,0 +1,44 @@
+
+
+OffscreenCanvas test: 2d.imageData.put.dirty.negative
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.imageData.put.dirty.negative
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              putImageData() handles negative-sized dirty rectangles correctly
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.put.dirty.negative.worker.js b/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.put.dirty.negative.worker.js
new file mode 100644
index 0000000000..0a7af64049
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.put.dirty.negative.worker.js
@@ -0,0 +1,39 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.imageData.put.dirty.negative
+// Description:putImageData() handles negative-sized dirty rectangles correctly
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("putImageData() handles negative-sized dirty rectangles correctly");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#f00';
+  ctx.fillRect(0, 0, 100, 50)
+  ctx.fillStyle = '#0f0';
+  ctx.fillRect(0, 0, 20, 20)
+
+  var imgdata = ctx.getImageData(0, 0, 100, 50);
+
+  ctx.fillStyle = '#0f0';
+  ctx.fillRect(0, 0, 100, 50)
+  ctx.fillStyle = '#f00';
+  ctx.fillRect(40, 20, 20, 20)
+  ctx.putImageData(imgdata, 40, 20, 20, 20, -20, -20);
+
+  _assertPixelApprox(canvas, 50,25, 0,255,0,255, 2);
+  _assertPixelApprox(canvas, 35,25, 0,255,0,255, 2);
+  _assertPixelApprox(canvas, 65,25, 0,255,0,255, 2);
+  _assertPixelApprox(canvas, 50,15, 0,255,0,255, 2);
+  _assertPixelApprox(canvas, 50,45, 0,255,0,255, 2);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.put.dirty.outside.html b/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.put.dirty.outside.html
new file mode 100644
index 0000000000..7b67ef2253
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.put.dirty.outside.html
@@ -0,0 +1,46 @@
+
+
+OffscreenCanvas test: 2d.imageData.put.dirty.outside
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.imageData.put.dirty.outside
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              putImageData() handles dirty rectangles outside the canvas correctly
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.put.dirty.outside.worker.js b/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.put.dirty.outside.worker.js
new file mode 100644
index 0000000000..87b88a09f4
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.put.dirty.outside.worker.js
@@ -0,0 +1,41 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.imageData.put.dirty.outside
+// Description:putImageData() handles dirty rectangles outside the canvas correctly
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("putImageData() handles dirty rectangles outside the canvas correctly");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#f00';
+  ctx.fillRect(0, 0, 100, 50)
+
+  var imgdata = ctx.getImageData(0, 0, 100, 50);
+
+  ctx.fillStyle = '#0f0';
+  ctx.fillRect(0, 0, 100, 50)
+
+  ctx.putImageData(imgdata, 100, 20, 20, 20, -20, -20);
+  ctx.putImageData(imgdata, 200, 200, 0, 0, 100, 50);
+  ctx.putImageData(imgdata, 40, 20, -30, -20, 30, 20);
+  ctx.putImageData(imgdata, -30, 20, 0, 0, 30, 20);
+
+  _assertPixelApprox(canvas, 50,25, 0,255,0,255, 2);
+  _assertPixelApprox(canvas, 98,15, 0,255,0,255, 2);
+  _assertPixelApprox(canvas, 98,25, 0,255,0,255, 2);
+  _assertPixelApprox(canvas, 98,45, 0,255,0,255, 2);
+  _assertPixelApprox(canvas, 1,5, 0,255,0,255, 2);
+  _assertPixelApprox(canvas, 1,25, 0,255,0,255, 2);
+  _assertPixelApprox(canvas, 1,45, 0,255,0,255, 2);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.put.dirty.rect1.html b/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.put.dirty.rect1.html
new file mode 100644
index 0000000000..9f571427a8
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.put.dirty.rect1.html
@@ -0,0 +1,44 @@
+
+
+OffscreenCanvas test: 2d.imageData.put.dirty.rect1
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.imageData.put.dirty.rect1
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              putImageData() only modifies areas inside the dirty rectangle, using width and height
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.put.dirty.rect1.worker.js b/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.put.dirty.rect1.worker.js
new file mode 100644
index 0000000000..6feea9556d
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.put.dirty.rect1.worker.js
@@ -0,0 +1,39 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.imageData.put.dirty.rect1
+// Description:putImageData() only modifies areas inside the dirty rectangle, using width and height
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("putImageData() only modifies areas inside the dirty rectangle, using width and height");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#f00';
+  ctx.fillRect(0, 0, 100, 50)
+  ctx.fillStyle = '#0f0';
+  ctx.fillRect(0, 0, 20, 20)
+
+  var imgdata = ctx.getImageData(0, 0, 100, 50);
+
+  ctx.fillStyle = '#0f0';
+  ctx.fillRect(0, 0, 100, 50)
+  ctx.fillStyle = '#f00';
+  ctx.fillRect(40, 20, 20, 20)
+  ctx.putImageData(imgdata, 40, 20, 0, 0, 20, 20);
+
+  _assertPixelApprox(canvas, 50,25, 0,255,0,255, 2);
+  _assertPixelApprox(canvas, 35,25, 0,255,0,255, 2);
+  _assertPixelApprox(canvas, 65,25, 0,255,0,255, 2);
+  _assertPixelApprox(canvas, 50,15, 0,255,0,255, 2);
+  _assertPixelApprox(canvas, 50,45, 0,255,0,255, 2);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.put.dirty.rect2.html b/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.put.dirty.rect2.html
new file mode 100644
index 0000000000..997c1136a1
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.put.dirty.rect2.html
@@ -0,0 +1,44 @@
+
+
+OffscreenCanvas test: 2d.imageData.put.dirty.rect2
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.imageData.put.dirty.rect2
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              putImageData() only modifies areas inside the dirty rectangle, using x and y
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.put.dirty.rect2.worker.js b/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.put.dirty.rect2.worker.js
new file mode 100644
index 0000000000..752a3cdf1e
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.put.dirty.rect2.worker.js
@@ -0,0 +1,39 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.imageData.put.dirty.rect2
+// Description:putImageData() only modifies areas inside the dirty rectangle, using x and y
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("putImageData() only modifies areas inside the dirty rectangle, using x and y");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#f00';
+  ctx.fillRect(0, 0, 100, 50)
+  ctx.fillStyle = '#0f0';
+  ctx.fillRect(60, 30, 20, 20)
+
+  var imgdata = ctx.getImageData(0, 0, 100, 50);
+
+  ctx.fillStyle = '#0f0';
+  ctx.fillRect(0, 0, 100, 50)
+  ctx.fillStyle = '#f00';
+  ctx.fillRect(40, 20, 20, 20)
+  ctx.putImageData(imgdata, -20, -10, 60, 30, 20, 20);
+
+  _assertPixelApprox(canvas, 50,25, 0,255,0,255, 2);
+  _assertPixelApprox(canvas, 35,25, 0,255,0,255, 2);
+  _assertPixelApprox(canvas, 65,25, 0,255,0,255, 2);
+  _assertPixelApprox(canvas, 50,15, 0,255,0,255, 2);
+  _assertPixelApprox(canvas, 50,45, 0,255,0,255, 2);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.put.dirty.zero.html b/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.put.dirty.zero.html
new file mode 100644
index 0000000000..fb90a017e1
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.put.dirty.zero.html
@@ -0,0 +1,33 @@
+
+
+OffscreenCanvas test: 2d.imageData.put.dirty.zero
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.imageData.put.dirty.zero
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              putImageData() with zero-sized dirty rectangle puts nothing
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.put.dirty.zero.worker.js b/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.put.dirty.zero.worker.js
new file mode 100644
index 0000000000..2fa474c07f
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.put.dirty.zero.worker.js
@@ -0,0 +1,28 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.imageData.put.dirty.zero
+// Description:putImageData() with zero-sized dirty rectangle puts nothing
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("putImageData() with zero-sized dirty rectangle puts nothing");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#f00';
+  ctx.fillRect(0, 0, 100, 50)
+  var imgdata = ctx.getImageData(0, 0, 100, 50);
+  ctx.fillStyle = '#0f0';
+  ctx.fillRect(0, 0, 100, 50)
+  ctx.putImageData(imgdata, 0, 0, 0, 0, 0, 0);
+  _assertPixelApprox(canvas, 50,25, 0,255,0,255, 2);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.put.modified.html b/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.put.modified.html
new file mode 100644
index 0000000000..337701aaf5
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.put.modified.html
@@ -0,0 +1,38 @@
+
+
+OffscreenCanvas test: 2d.imageData.put.modified
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.imageData.put.modified
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              putImageData() puts modified image data correctly
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.put.modified.worker.js b/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.put.modified.worker.js
new file mode 100644
index 0000000000..846a9dbc2d
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.put.modified.worker.js
@@ -0,0 +1,33 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.imageData.put.modified
+// Description:putImageData() puts modified image data correctly
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("putImageData() puts modified image data correctly");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#0f0';
+  ctx.fillRect(0, 0, 100, 50)
+  ctx.fillStyle = '#f00';
+  ctx.fillRect(45, 20, 10, 10)
+  var imgdata = ctx.getImageData(45, 20, 10, 10);
+  for (var i = 0, len = imgdata.width*imgdata.height*4; i < len; i += 4)
+  {
+      imgdata.data[i] = 0;
+      imgdata.data[i+1] = 255;
+  }
+  ctx.putImageData(imgdata, 45, 20);
+  _assertPixelApprox(canvas, 50,25, 0,255,0,255, 2);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.put.nonfinite.html b/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.put.nonfinite.html
new file mode 100644
index 0000000000..eb61d38e9e
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.put.nonfinite.html
@@ -0,0 +1,109 @@
+
+
+OffscreenCanvas test: 2d.imageData.put.nonfinite
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.imageData.put.nonfinite
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              putImageData() throws TypeError if arguments are not finite
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Defined in "Web IDL" (draft)
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.put.nonfinite.worker.js b/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.put.nonfinite.worker.js
new file mode 100644
index 0000000000..479ad69467
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.put.nonfinite.worker.js
@@ -0,0 +1,104 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.imageData.put.nonfinite
+// Description:putImageData() throws TypeError if arguments are not finite
+// Note:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Defined in "Web IDL" (draft)
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("putImageData() throws TypeError if arguments are not finite");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  var imgdata = ctx.getImageData(0, 0, 10, 10);
+  assert_throws_js(TypeError, function() { ctx.putImageData(imgdata, Infinity, 10); });
+  assert_throws_js(TypeError, function() { ctx.putImageData(imgdata, -Infinity, 10); });
+  assert_throws_js(TypeError, function() { ctx.putImageData(imgdata, NaN, 10); });
+  assert_throws_js(TypeError, function() { ctx.putImageData(imgdata, 10, Infinity); });
+  assert_throws_js(TypeError, function() { ctx.putImageData(imgdata, 10, -Infinity); });
+  assert_throws_js(TypeError, function() { ctx.putImageData(imgdata, 10, NaN); });
+  assert_throws_js(TypeError, function() { ctx.putImageData(imgdata, Infinity, Infinity); });
+  assert_throws_js(TypeError, function() { ctx.putImageData(imgdata, Infinity, 10, 10, 10, 10, 10); });
+  assert_throws_js(TypeError, function() { ctx.putImageData(imgdata, -Infinity, 10, 10, 10, 10, 10); });
+  assert_throws_js(TypeError, function() { ctx.putImageData(imgdata, NaN, 10, 10, 10, 10, 10); });
+  assert_throws_js(TypeError, function() { ctx.putImageData(imgdata, 10, Infinity, 10, 10, 10, 10); });
+  assert_throws_js(TypeError, function() { ctx.putImageData(imgdata, 10, -Infinity, 10, 10, 10, 10); });
+  assert_throws_js(TypeError, function() { ctx.putImageData(imgdata, 10, NaN, 10, 10, 10, 10); });
+  assert_throws_js(TypeError, function() { ctx.putImageData(imgdata, 10, 10, Infinity, 10, 10, 10); });
+  assert_throws_js(TypeError, function() { ctx.putImageData(imgdata, 10, 10, -Infinity, 10, 10, 10); });
+  assert_throws_js(TypeError, function() { ctx.putImageData(imgdata, 10, 10, NaN, 10, 10, 10); });
+  assert_throws_js(TypeError, function() { ctx.putImageData(imgdata, 10, 10, 10, Infinity, 10, 10); });
+  assert_throws_js(TypeError, function() { ctx.putImageData(imgdata, 10, 10, 10, -Infinity, 10, 10); });
+  assert_throws_js(TypeError, function() { ctx.putImageData(imgdata, 10, 10, 10, NaN, 10, 10); });
+  assert_throws_js(TypeError, function() { ctx.putImageData(imgdata, 10, 10, 10, 10, Infinity, 10); });
+  assert_throws_js(TypeError, function() { ctx.putImageData(imgdata, 10, 10, 10, 10, -Infinity, 10); });
+  assert_throws_js(TypeError, function() { ctx.putImageData(imgdata, 10, 10, 10, 10, NaN, 10); });
+  assert_throws_js(TypeError, function() { ctx.putImageData(imgdata, 10, 10, 10, 10, 10, Infinity); });
+  assert_throws_js(TypeError, function() { ctx.putImageData(imgdata, 10, 10, 10, 10, 10, -Infinity); });
+  assert_throws_js(TypeError, function() { ctx.putImageData(imgdata, 10, 10, 10, 10, 10, NaN); });
+  assert_throws_js(TypeError, function() { ctx.putImageData(imgdata, Infinity, Infinity, 10, 10, 10, 10); });
+  assert_throws_js(TypeError, function() { ctx.putImageData(imgdata, Infinity, Infinity, Infinity, 10, 10, 10); });
+  assert_throws_js(TypeError, function() { ctx.putImageData(imgdata, Infinity, Infinity, Infinity, Infinity, 10, 10); });
+  assert_throws_js(TypeError, function() { ctx.putImageData(imgdata, Infinity, Infinity, Infinity, Infinity, Infinity, 10); });
+  assert_throws_js(TypeError, function() { ctx.putImageData(imgdata, Infinity, Infinity, Infinity, Infinity, Infinity, Infinity); });
+  assert_throws_js(TypeError, function() { ctx.putImageData(imgdata, Infinity, Infinity, Infinity, Infinity, 10, Infinity); });
+  assert_throws_js(TypeError, function() { ctx.putImageData(imgdata, Infinity, Infinity, Infinity, 10, Infinity, 10); });
+  assert_throws_js(TypeError, function() { ctx.putImageData(imgdata, Infinity, Infinity, Infinity, 10, Infinity, Infinity); });
+  assert_throws_js(TypeError, function() { ctx.putImageData(imgdata, Infinity, Infinity, Infinity, 10, 10, Infinity); });
+  assert_throws_js(TypeError, function() { ctx.putImageData(imgdata, Infinity, Infinity, 10, Infinity, 10, 10); });
+  assert_throws_js(TypeError, function() { ctx.putImageData(imgdata, Infinity, Infinity, 10, Infinity, Infinity, 10); });
+  assert_throws_js(TypeError, function() { ctx.putImageData(imgdata, Infinity, Infinity, 10, Infinity, Infinity, Infinity); });
+  assert_throws_js(TypeError, function() { ctx.putImageData(imgdata, Infinity, Infinity, 10, Infinity, 10, Infinity); });
+  assert_throws_js(TypeError, function() { ctx.putImageData(imgdata, Infinity, Infinity, 10, 10, Infinity, 10); });
+  assert_throws_js(TypeError, function() { ctx.putImageData(imgdata, Infinity, Infinity, 10, 10, Infinity, Infinity); });
+  assert_throws_js(TypeError, function() { ctx.putImageData(imgdata, Infinity, Infinity, 10, 10, 10, Infinity); });
+  assert_throws_js(TypeError, function() { ctx.putImageData(imgdata, Infinity, 10, Infinity, 10, 10, 10); });
+  assert_throws_js(TypeError, function() { ctx.putImageData(imgdata, Infinity, 10, Infinity, Infinity, 10, 10); });
+  assert_throws_js(TypeError, function() { ctx.putImageData(imgdata, Infinity, 10, Infinity, Infinity, Infinity, 10); });
+  assert_throws_js(TypeError, function() { ctx.putImageData(imgdata, Infinity, 10, Infinity, Infinity, Infinity, Infinity); });
+  assert_throws_js(TypeError, function() { ctx.putImageData(imgdata, Infinity, 10, Infinity, Infinity, 10, Infinity); });
+  assert_throws_js(TypeError, function() { ctx.putImageData(imgdata, Infinity, 10, Infinity, 10, Infinity, 10); });
+  assert_throws_js(TypeError, function() { ctx.putImageData(imgdata, Infinity, 10, Infinity, 10, Infinity, Infinity); });
+  assert_throws_js(TypeError, function() { ctx.putImageData(imgdata, Infinity, 10, Infinity, 10, 10, Infinity); });
+  assert_throws_js(TypeError, function() { ctx.putImageData(imgdata, Infinity, 10, 10, Infinity, 10, 10); });
+  assert_throws_js(TypeError, function() { ctx.putImageData(imgdata, Infinity, 10, 10, Infinity, Infinity, 10); });
+  assert_throws_js(TypeError, function() { ctx.putImageData(imgdata, Infinity, 10, 10, Infinity, Infinity, Infinity); });
+  assert_throws_js(TypeError, function() { ctx.putImageData(imgdata, Infinity, 10, 10, Infinity, 10, Infinity); });
+  assert_throws_js(TypeError, function() { ctx.putImageData(imgdata, Infinity, 10, 10, 10, Infinity, 10); });
+  assert_throws_js(TypeError, function() { ctx.putImageData(imgdata, Infinity, 10, 10, 10, Infinity, Infinity); });
+  assert_throws_js(TypeError, function() { ctx.putImageData(imgdata, Infinity, 10, 10, 10, 10, Infinity); });
+  assert_throws_js(TypeError, function() { ctx.putImageData(imgdata, 10, Infinity, Infinity, 10, 10, 10); });
+  assert_throws_js(TypeError, function() { ctx.putImageData(imgdata, 10, Infinity, Infinity, Infinity, 10, 10); });
+  assert_throws_js(TypeError, function() { ctx.putImageData(imgdata, 10, Infinity, Infinity, Infinity, Infinity, 10); });
+  assert_throws_js(TypeError, function() { ctx.putImageData(imgdata, 10, Infinity, Infinity, Infinity, Infinity, Infinity); });
+  assert_throws_js(TypeError, function() { ctx.putImageData(imgdata, 10, Infinity, Infinity, Infinity, 10, Infinity); });
+  assert_throws_js(TypeError, function() { ctx.putImageData(imgdata, 10, Infinity, Infinity, 10, Infinity, 10); });
+  assert_throws_js(TypeError, function() { ctx.putImageData(imgdata, 10, Infinity, Infinity, 10, Infinity, Infinity); });
+  assert_throws_js(TypeError, function() { ctx.putImageData(imgdata, 10, Infinity, Infinity, 10, 10, Infinity); });
+  assert_throws_js(TypeError, function() { ctx.putImageData(imgdata, 10, Infinity, 10, Infinity, 10, 10); });
+  assert_throws_js(TypeError, function() { ctx.putImageData(imgdata, 10, Infinity, 10, Infinity, Infinity, 10); });
+  assert_throws_js(TypeError, function() { ctx.putImageData(imgdata, 10, Infinity, 10, Infinity, Infinity, Infinity); });
+  assert_throws_js(TypeError, function() { ctx.putImageData(imgdata, 10, Infinity, 10, Infinity, 10, Infinity); });
+  assert_throws_js(TypeError, function() { ctx.putImageData(imgdata, 10, Infinity, 10, 10, Infinity, 10); });
+  assert_throws_js(TypeError, function() { ctx.putImageData(imgdata, 10, Infinity, 10, 10, Infinity, Infinity); });
+  assert_throws_js(TypeError, function() { ctx.putImageData(imgdata, 10, Infinity, 10, 10, 10, Infinity); });
+  assert_throws_js(TypeError, function() { ctx.putImageData(imgdata, 10, 10, Infinity, Infinity, 10, 10); });
+  assert_throws_js(TypeError, function() { ctx.putImageData(imgdata, 10, 10, Infinity, Infinity, Infinity, 10); });
+  assert_throws_js(TypeError, function() { ctx.putImageData(imgdata, 10, 10, Infinity, Infinity, Infinity, Infinity); });
+  assert_throws_js(TypeError, function() { ctx.putImageData(imgdata, 10, 10, Infinity, Infinity, 10, Infinity); });
+  assert_throws_js(TypeError, function() { ctx.putImageData(imgdata, 10, 10, Infinity, 10, Infinity, 10); });
+  assert_throws_js(TypeError, function() { ctx.putImageData(imgdata, 10, 10, Infinity, 10, Infinity, Infinity); });
+  assert_throws_js(TypeError, function() { ctx.putImageData(imgdata, 10, 10, Infinity, 10, 10, Infinity); });
+  assert_throws_js(TypeError, function() { ctx.putImageData(imgdata, 10, 10, 10, Infinity, Infinity, 10); });
+  assert_throws_js(TypeError, function() { ctx.putImageData(imgdata, 10, 10, 10, Infinity, Infinity, Infinity); });
+  assert_throws_js(TypeError, function() { ctx.putImageData(imgdata, 10, 10, 10, Infinity, 10, Infinity); });
+  assert_throws_js(TypeError, function() { ctx.putImageData(imgdata, 10, 10, 10, 10, Infinity, Infinity); });
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.put.null.html b/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.put.null.html
new file mode 100644
index 0000000000..89fe06686d
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.put.null.html
@@ -0,0 +1,27 @@
+
+
+OffscreenCanvas test: 2d.imageData.put.null
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.imageData.put.null
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              putImageData() with null imagedata throws TypeError
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.put.null.worker.js b/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.put.null.worker.js
new file mode 100644
index 0000000000..2f021b638e
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.put.null.worker.js
@@ -0,0 +1,22 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.imageData.put.null
+// Description:putImageData() with null imagedata throws TypeError
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("putImageData() with null imagedata throws TypeError");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  assert_throws_js(TypeError, function() { ctx.putImageData(null, 0, 0); });
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.put.path.html b/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.put.path.html
new file mode 100644
index 0000000000..6c32376006
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.put.path.html
@@ -0,0 +1,34 @@
+
+
+OffscreenCanvas test: 2d.imageData.put.path
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.imageData.put.path
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              putImageData() does not affect the current path
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.put.path.worker.js b/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.put.path.worker.js
new file mode 100644
index 0000000000..66781a922d
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.put.path.worker.js
@@ -0,0 +1,29 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.imageData.put.path
+// Description:putImageData() does not affect the current path
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("putImageData() does not affect the current path");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#f00';
+  ctx.fillRect(0, 0, 100, 50)
+  ctx.rect(0, 0, 100, 50);
+  var imgdata = ctx.getImageData(0, 0, 100, 50);
+  ctx.putImageData(imgdata, 0, 0);
+  ctx.fillStyle = '#0f0';
+  ctx.fill();
+  _assertPixelApprox(canvas, 50,25, 0,255,0,255, 2);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.put.unaffected.html b/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.put.unaffected.html
new file mode 100644
index 0000000000..3d3e99b135
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.put.unaffected.html
@@ -0,0 +1,39 @@
+
+
+OffscreenCanvas test: 2d.imageData.put.unaffected
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.imageData.put.unaffected
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              putImageData() is not affected by context state
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.put.unaffected.worker.js b/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.put.unaffected.worker.js
new file mode 100644
index 0000000000..75adb865ef
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.put.unaffected.worker.js
@@ -0,0 +1,34 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.imageData.put.unaffected
+// Description:putImageData() is not affected by context state
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("putImageData() is not affected by context state");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#0f0';
+  ctx.fillRect(0, 0, 100, 50)
+  var imgdata = ctx.getImageData(0, 0, 100, 50);
+  ctx.fillStyle = '#f00';
+  ctx.fillRect(0, 0, 100, 50)
+  ctx.globalAlpha = 0.1;
+  ctx.globalCompositeOperation = 'destination-atop';
+  ctx.shadowColor = '#f00';
+  ctx.shadowBlur = 1;
+  ctx.translate(100, 50);
+  ctx.scale(0.1, 0.1);
+  ctx.putImageData(imgdata, 0, 0);
+  _assertPixelApprox(canvas, 50,25, 0,255,0,255, 2);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.put.unchanged.html b/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.put.unchanged.html
new file mode 100644
index 0000000000..d78fa4e035
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.put.unchanged.html
@@ -0,0 +1,44 @@
+
+
+OffscreenCanvas test: 2d.imageData.put.unchanged
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.imageData.put.unchanged
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              putImageData(getImageData(...), ...) has no effect
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.put.unchanged.worker.js b/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.put.unchanged.worker.js
new file mode 100644
index 0000000000..5e9362fab2
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.put.unchanged.worker.js
@@ -0,0 +1,39 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.imageData.put.unchanged
+// Description:putImageData(getImageData(...), ...) has no effect
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("putImageData(getImageData(...), ...) has no effect");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  var i = 0;
+  for (var y = 0; y < 16; ++y) {
+      for (var x = 0; x < 16; ++x, ++i) {
+          ctx.fillStyle = 'rgba(' + i + ',' + (Math.floor(i*1.5) % 256) + ',' + (Math.floor(i*23.3) % 256) + ',' + (i/256) + ')';
+          ctx.fillRect(x, y, 1, 1);
+      }
+  }
+  var imgdata1 = ctx.getImageData(0.1, 0.2, 15.8, 15.9);
+  var olddata = [];
+  for (var i = 0; i < imgdata1.data.length; ++i)
+      olddata[i] = imgdata1.data[i];
+
+  ctx.putImageData(imgdata1, 0.1, 0.2);
+
+  var imgdata2 = ctx.getImageData(0.1, 0.2, 15.8, 15.9);
+  for (var i = 0; i < imgdata2.data.length; ++i) {
+      _assertSame(olddata[i], imgdata2.data[i], "olddata[\""+(i)+"\"]", "imgdata2.data[\""+(i)+"\"]");
+  }
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.put.wrongtype.html b/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.put.wrongtype.html
new file mode 100644
index 0000000000..1488e7b111
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.put.wrongtype.html
@@ -0,0 +1,30 @@
+
+
+OffscreenCanvas test: 2d.imageData.put.wrongtype
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.imageData.put.wrongtype
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              putImageData() does not accept non-ImageData objects
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.put.wrongtype.worker.js b/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.put.wrongtype.worker.js
new file mode 100644
index 0000000000..bf4d6dfedf
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.put.wrongtype.worker.js
@@ -0,0 +1,25 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.imageData.put.wrongtype
+// Description:putImageData() does not accept non-ImageData objects
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("putImageData() does not accept non-ImageData objects");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  var imgdata = { width: 1, height: 1, data: [255, 0, 0, 255] };
+  assert_throws_js(TypeError, function() { ctx.putImageData(imgdata, 0, 0); });
+  assert_throws_js(TypeError, function() { ctx.putImageData("cheese", 0, 0); });
+  assert_throws_js(TypeError, function() { ctx.putImageData(42, 0, 0); });
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/set-proprietary-font-names-001-crash.html b/testing/web-platform/tests/html/canvas/offscreen/set-proprietary-font-names-001-crash.html
new file mode 100644
index 0000000000..dfa661655e
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/set-proprietary-font-names-001-crash.html
@@ -0,0 +1,13 @@
+
+Setting font of offscreen
+
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.alpha.1.html b/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.alpha.1.html
new file mode 100644
index 0000000000..cf887b62a2
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.alpha.1.html
@@ -0,0 +1,32 @@
+
+
+OffscreenCanvas test: 2d.shadow.alpha.1
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.shadow.alpha.1
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Shadow color alpha components are used
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.alpha.1.worker.js b/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.alpha.1.worker.js
new file mode 100644
index 0000000000..7bcf74463c
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.alpha.1.worker.js
@@ -0,0 +1,28 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.shadow.alpha.1
+// Description:Shadow color alpha components are used
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("Shadow color alpha components are used");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+ctx.fillStyle = '#0f0';
+ctx.fillRect(0, 0, 100, 50);
+ctx.shadowColor = 'rgba(255, 0, 0, 0.01)';
+ctx.shadowOffsetY = 50;
+ctx.fillRect(0, -50, 100, 50);
+_assertPixelApprox(canvas, 50,25, 0,255,0,255, 4);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.alpha.2.html b/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.alpha.2.html
new file mode 100644
index 0000000000..cb03866bc3
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.alpha.2.html
@@ -0,0 +1,32 @@
+
+
+OffscreenCanvas test: 2d.shadow.alpha.2
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.shadow.alpha.2
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Shadow color alpha components are used
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.alpha.2.worker.js b/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.alpha.2.worker.js
new file mode 100644
index 0000000000..8f4b98143b
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.alpha.2.worker.js
@@ -0,0 +1,28 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.shadow.alpha.2
+// Description:Shadow color alpha components are used
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("Shadow color alpha components are used");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+ctx.fillStyle = '#f00';
+ctx.fillRect(0, 0, 100, 50);
+ctx.shadowColor = 'rgba(0, 0, 255, 0.5)';
+ctx.shadowOffsetY = 50;
+ctx.fillRect(0, -50, 100, 50);
+_assertPixelApprox(canvas, 50,25, 127,0,127,255, 2);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.alpha.3.html b/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.alpha.3.html
new file mode 100644
index 0000000000..efc9fca97e
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.alpha.3.html
@@ -0,0 +1,34 @@
+
+
+OffscreenCanvas test: 2d.shadow.alpha.3
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.shadow.alpha.3
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Shadows are affected by globalAlpha
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.alpha.3.worker.js b/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.alpha.3.worker.js
new file mode 100644
index 0000000000..ddaae242d9
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.alpha.3.worker.js
@@ -0,0 +1,30 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.shadow.alpha.3
+// Description:Shadows are affected by globalAlpha
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("Shadows are affected by globalAlpha");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+ctx.fillStyle = '#f00';
+ctx.fillRect(0, 0, 100, 50);
+ctx.fillStyle = '#f00'; // (work around broken Firefox globalAlpha caching)
+ctx.shadowColor = '#00f';
+ctx.shadowOffsetY = 50;
+ctx.globalAlpha = 0.5;
+ctx.fillRect(0, -50, 100, 50);
+_assertPixelApprox(canvas, 50,25, 127,0,127,255, 2);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.alpha.4.html b/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.alpha.4.html
new file mode 100644
index 0000000000..295b61269c
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.alpha.4.html
@@ -0,0 +1,34 @@
+
+
+OffscreenCanvas test: 2d.shadow.alpha.4
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.shadow.alpha.4
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Shadows with alpha components are correctly affected by globalAlpha
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.alpha.4.worker.js b/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.alpha.4.worker.js
new file mode 100644
index 0000000000..16defd9094
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.alpha.4.worker.js
@@ -0,0 +1,30 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.shadow.alpha.4
+// Description:Shadows with alpha components are correctly affected by globalAlpha
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("Shadows with alpha components are correctly affected by globalAlpha");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+ctx.fillStyle = '#f00';
+ctx.fillRect(0, 0, 100, 50);
+ctx.fillStyle = '#f00'; // (work around broken Firefox globalAlpha caching)
+ctx.shadowColor = 'rgba(0, 0, 255, 0.707)';
+ctx.shadowOffsetY = 50;
+ctx.globalAlpha = 0.707;
+ctx.fillRect(0, -50, 100, 50);
+_assertPixelApprox(canvas, 50,25, 127,0,127,255, 2);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.alpha.5.html b/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.alpha.5.html
new file mode 100644
index 0000000000..3b1089d7d7
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.alpha.5.html
@@ -0,0 +1,33 @@
+
+
+OffscreenCanvas test: 2d.shadow.alpha.5
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.shadow.alpha.5
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Shadows of shapes with alpha components are drawn correctly
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.alpha.5.worker.js b/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.alpha.5.worker.js
new file mode 100644
index 0000000000..5437c65ec1
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.alpha.5.worker.js
@@ -0,0 +1,29 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.shadow.alpha.5
+// Description:Shadows of shapes with alpha components are drawn correctly
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("Shadows of shapes with alpha components are drawn correctly");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+ctx.fillStyle = '#f00';
+ctx.fillRect(0, 0, 100, 50);
+ctx.fillStyle = 'rgba(64, 0, 0, 0.5)';
+ctx.shadowColor = '#00f';
+ctx.shadowOffsetY = 50;
+ctx.fillRect(0, -50, 100, 50);
+_assertPixelApprox(canvas, 50,25, 127,0,127,255, 2);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.attributes.shadowBlur.initial.html b/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.attributes.shadowBlur.initial.html
new file mode 100644
index 0000000000..e6c4c2fda8
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.attributes.shadowBlur.initial.html
@@ -0,0 +1,27 @@
+
+
+OffscreenCanvas test: 2d.shadow.attributes.shadowBlur.initial
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.shadow.attributes.shadowBlur.initial
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.attributes.shadowBlur.initial.worker.js b/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.attributes.shadowBlur.initial.worker.js
new file mode 100644
index 0000000000..9cf55e796b
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.attributes.shadowBlur.initial.worker.js
@@ -0,0 +1,23 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.shadow.attributes.shadowBlur.initial
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+_assertSame(ctx.shadowBlur, 0, "ctx.shadowBlur", "0");
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.attributes.shadowBlur.invalid.html b/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.attributes.shadowBlur.invalid.html
new file mode 100644
index 0000000000..a506da4b8b
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.attributes.shadowBlur.invalid.html
@@ -0,0 +1,38 @@
+
+
+OffscreenCanvas test: 2d.shadow.attributes.shadowBlur.invalid
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.shadow.attributes.shadowBlur.invalid
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.attributes.shadowBlur.invalid.worker.js b/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.attributes.shadowBlur.invalid.worker.js
new file mode 100644
index 0000000000..1f79c36d12
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.attributes.shadowBlur.invalid.worker.js
@@ -0,0 +1,34 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.shadow.attributes.shadowBlur.invalid
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+ctx.shadowBlur = 1;
+ctx.shadowBlur = -2;
+_assertSame(ctx.shadowBlur, 1, "ctx.shadowBlur", "1");
+ctx.shadowBlur = 1;
+ctx.shadowBlur = Infinity;
+_assertSame(ctx.shadowBlur, 1, "ctx.shadowBlur", "1");
+ctx.shadowBlur = 1;
+ctx.shadowBlur = -Infinity;
+_assertSame(ctx.shadowBlur, 1, "ctx.shadowBlur", "1");
+ctx.shadowBlur = 1;
+ctx.shadowBlur = NaN;
+_assertSame(ctx.shadowBlur, 1, "ctx.shadowBlur", "1");
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.attributes.shadowBlur.valid.html b/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.attributes.shadowBlur.valid.html
new file mode 100644
index 0000000000..b69b9c4717
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.attributes.shadowBlur.valid.html
@@ -0,0 +1,34 @@
+
+
+OffscreenCanvas test: 2d.shadow.attributes.shadowBlur.valid
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.shadow.attributes.shadowBlur.valid
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.attributes.shadowBlur.valid.worker.js b/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.attributes.shadowBlur.valid.worker.js
new file mode 100644
index 0000000000..b41fa24905
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.attributes.shadowBlur.valid.worker.js
@@ -0,0 +1,30 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.shadow.attributes.shadowBlur.valid
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+ctx.shadowBlur = 1;
+_assertSame(ctx.shadowBlur, 1, "ctx.shadowBlur", "1");
+ctx.shadowBlur = 0.5;
+_assertSame(ctx.shadowBlur, 0.5, "ctx.shadowBlur", "0.5");
+ctx.shadowBlur = 1e6;
+_assertSame(ctx.shadowBlur, 1e6, "ctx.shadowBlur", "1e6");
+ctx.shadowBlur = 0;
+_assertSame(ctx.shadowBlur, 0, "ctx.shadowBlur", "0");
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.attributes.shadowColor.initial.html b/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.attributes.shadowColor.initial.html
new file mode 100644
index 0000000000..44a25308ac
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.attributes.shadowColor.initial.html
@@ -0,0 +1,27 @@
+
+
+OffscreenCanvas test: 2d.shadow.attributes.shadowColor.initial
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.shadow.attributes.shadowColor.initial
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.attributes.shadowColor.initial.worker.js b/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.attributes.shadowColor.initial.worker.js
new file mode 100644
index 0000000000..f8132d5385
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.attributes.shadowColor.initial.worker.js
@@ -0,0 +1,23 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.shadow.attributes.shadowColor.initial
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+_assertSame(ctx.shadowColor, 'rgba(0, 0, 0, 0)', "ctx.shadowColor", "'rgba(0, 0, 0, 0)'");
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.attributes.shadowColor.invalid.html b/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.attributes.shadowColor.invalid.html
new file mode 100644
index 0000000000..ed09bcbdcf
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.attributes.shadowColor.invalid.html
@@ -0,0 +1,38 @@
+
+
+OffscreenCanvas test: 2d.shadow.attributes.shadowColor.invalid
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.shadow.attributes.shadowColor.invalid
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.attributes.shadowColor.invalid.worker.js b/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.attributes.shadowColor.invalid.worker.js
new file mode 100644
index 0000000000..b1003718c5
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.attributes.shadowColor.invalid.worker.js
@@ -0,0 +1,34 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.shadow.attributes.shadowColor.invalid
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+ctx.shadowColor = '#00ff00';
+ctx.shadowColor = 'bogus';
+_assertSame(ctx.shadowColor, '#00ff00', "ctx.shadowColor", "'#00ff00'");
+ctx.shadowColor = '#00ff00';
+ctx.shadowColor = 'red bogus';
+_assertSame(ctx.shadowColor, '#00ff00', "ctx.shadowColor", "'#00ff00'");
+ctx.shadowColor = '#00ff00';
+ctx.shadowColor = ctx;
+_assertSame(ctx.shadowColor, '#00ff00', "ctx.shadowColor", "'#00ff00'");
+ctx.shadowColor = '#00ff00';
+ctx.shadowColor = undefined;
+_assertSame(ctx.shadowColor, '#00ff00', "ctx.shadowColor", "'#00ff00'");
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.attributes.shadowColor.valid.html b/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.attributes.shadowColor.valid.html
new file mode 100644
index 0000000000..9511027b5a
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.attributes.shadowColor.valid.html
@@ -0,0 +1,30 @@
+
+
+OffscreenCanvas test: 2d.shadow.attributes.shadowColor.valid
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.shadow.attributes.shadowColor.valid
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.attributes.shadowColor.valid.worker.js b/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.attributes.shadowColor.valid.worker.js
new file mode 100644
index 0000000000..f47e3660b5
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.attributes.shadowColor.valid.worker.js
@@ -0,0 +1,26 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.shadow.attributes.shadowColor.valid
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+ctx.shadowColor = 'lime';
+_assertSame(ctx.shadowColor, '#00ff00', "ctx.shadowColor", "'#00ff00'");
+ctx.shadowColor = 'RGBA(0,255, 0,0)';
+_assertSame(ctx.shadowColor, 'rgba(0, 255, 0, 0)', "ctx.shadowColor", "'rgba(0, 255, 0, 0)'");
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.attributes.shadowOffset.initial.html b/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.attributes.shadowOffset.initial.html
new file mode 100644
index 0000000000..e568569a58
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.attributes.shadowOffset.initial.html
@@ -0,0 +1,28 @@
+
+
+OffscreenCanvas test: 2d.shadow.attributes.shadowOffset.initial
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.shadow.attributes.shadowOffset.initial
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.attributes.shadowOffset.initial.worker.js b/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.attributes.shadowOffset.initial.worker.js
new file mode 100644
index 0000000000..af2e77f464
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.attributes.shadowOffset.initial.worker.js
@@ -0,0 +1,24 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.shadow.attributes.shadowOffset.initial
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+_assertSame(ctx.shadowOffsetX, 0, "ctx.shadowOffsetX", "0");
+_assertSame(ctx.shadowOffsetY, 0, "ctx.shadowOffsetY", "0");
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.attributes.shadowOffset.invalid.html b/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.attributes.shadowOffset.invalid.html
new file mode 100644
index 0000000000..58c8efec20
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.attributes.shadowOffset.invalid.html
@@ -0,0 +1,44 @@
+
+
+OffscreenCanvas test: 2d.shadow.attributes.shadowOffset.invalid
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.shadow.attributes.shadowOffset.invalid
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.attributes.shadowOffset.invalid.worker.js b/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.attributes.shadowOffset.invalid.worker.js
new file mode 100644
index 0000000000..892614781a
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.attributes.shadowOffset.invalid.worker.js
@@ -0,0 +1,40 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.shadow.attributes.shadowOffset.invalid
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+ctx.shadowOffsetX = 1;
+ctx.shadowOffsetY = 2;
+ctx.shadowOffsetX = Infinity;
+ctx.shadowOffsetY = Infinity;
+_assertSame(ctx.shadowOffsetX, 1, "ctx.shadowOffsetX", "1");
+_assertSame(ctx.shadowOffsetY, 2, "ctx.shadowOffsetY", "2");
+ctx.shadowOffsetX = 1;
+ctx.shadowOffsetY = 2;
+ctx.shadowOffsetX = -Infinity;
+ctx.shadowOffsetY = -Infinity;
+_assertSame(ctx.shadowOffsetX, 1, "ctx.shadowOffsetX", "1");
+_assertSame(ctx.shadowOffsetY, 2, "ctx.shadowOffsetY", "2");
+ctx.shadowOffsetX = 1;
+ctx.shadowOffsetY = 2;
+ctx.shadowOffsetX = NaN;
+ctx.shadowOffsetY = NaN;
+_assertSame(ctx.shadowOffsetX, 1, "ctx.shadowOffsetX", "1");
+_assertSame(ctx.shadowOffsetY, 2, "ctx.shadowOffsetY", "2");
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.attributes.shadowOffset.valid.html b/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.attributes.shadowOffset.valid.html
new file mode 100644
index 0000000000..1ad622c468
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.attributes.shadowOffset.valid.html
@@ -0,0 +1,46 @@
+
+
+OffscreenCanvas test: 2d.shadow.attributes.shadowOffset.valid
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.shadow.attributes.shadowOffset.valid
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.attributes.shadowOffset.valid.worker.js b/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.attributes.shadowOffset.valid.worker.js
new file mode 100644
index 0000000000..eed84b54e5
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.attributes.shadowOffset.valid.worker.js
@@ -0,0 +1,42 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.shadow.attributes.shadowOffset.valid
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+ctx.shadowOffsetX = 1;
+ctx.shadowOffsetY = 2;
+_assertSame(ctx.shadowOffsetX, 1, "ctx.shadowOffsetX", "1");
+_assertSame(ctx.shadowOffsetY, 2, "ctx.shadowOffsetY", "2");
+ctx.shadowOffsetX = 0.5;
+ctx.shadowOffsetY = 0.25;
+_assertSame(ctx.shadowOffsetX, 0.5, "ctx.shadowOffsetX", "0.5");
+_assertSame(ctx.shadowOffsetY, 0.25, "ctx.shadowOffsetY", "0.25");
+ctx.shadowOffsetX = -0.5;
+ctx.shadowOffsetY = -0.25;
+_assertSame(ctx.shadowOffsetX, -0.5, "ctx.shadowOffsetX", "-0.5");
+_assertSame(ctx.shadowOffsetY, -0.25, "ctx.shadowOffsetY", "-0.25");
+ctx.shadowOffsetX = 0;
+ctx.shadowOffsetY = 0;
+_assertSame(ctx.shadowOffsetX, 0, "ctx.shadowOffsetX", "0");
+_assertSame(ctx.shadowOffsetY, 0, "ctx.shadowOffsetY", "0");
+ctx.shadowOffsetX = 1e6;
+ctx.shadowOffsetY = 1e6;
+_assertSame(ctx.shadowOffsetX, 1e6, "ctx.shadowOffsetX", "1e6");
+_assertSame(ctx.shadowOffsetY, 1e6, "ctx.shadowOffsetY", "1e6");
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.canvas.alpha.html b/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.canvas.alpha.html
new file mode 100644
index 0000000000..5fea8a7cf3
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.canvas.alpha.html
@@ -0,0 +1,36 @@
+
+
+OffscreenCanvas test: 2d.shadow.canvas.alpha
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.shadow.canvas.alpha
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Shadows are drawn correctly for partially-transparent canvases
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.canvas.alpha.worker.js b/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.canvas.alpha.worker.js
new file mode 100644
index 0000000000..663e89f284
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.canvas.alpha.worker.js
@@ -0,0 +1,32 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.shadow.canvas.alpha
+// Description:Shadows are drawn correctly for partially-transparent canvases
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("Shadows are drawn correctly for partially-transparent canvases");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+var offscreenCanvas2 = new OffscreenCanvas(100, 50);
+var ctx2 = offscreenCanvas2.getContext('2d');
+ctx2.fillStyle = 'rgba(255, 0, 0, 0.5)';
+ctx2.fillRect(0, 0, 100, 50);
+ctx.fillStyle = '#f00';
+ctx.fillRect(0, 0, 100, 50);
+ctx.shadowOffsetY = 50;
+ctx.shadowColor = '#00f';
+ctx.drawImage(offscreenCanvas2, 0, -50);
+_assertPixelApprox(canvas, 50,25, 127,0,127,255, 2);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.canvas.basic.html b/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.canvas.basic.html
new file mode 100644
index 0000000000..2fc6b547d5
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.canvas.basic.html
@@ -0,0 +1,36 @@
+
+
+OffscreenCanvas test: 2d.shadow.canvas.basic
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.shadow.canvas.basic
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Shadows are drawn for canvases
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.canvas.basic.worker.js b/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.canvas.basic.worker.js
new file mode 100644
index 0000000000..20c433b2f6
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.canvas.basic.worker.js
@@ -0,0 +1,32 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.shadow.canvas.basic
+// Description:Shadows are drawn for canvases
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("Shadows are drawn for canvases");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+var offscreenCanvas2 = new OffscreenCanvas(100, 50);
+var ctx2 = offscreenCanvas2.getContext('2d');
+ctx2.fillStyle = '#f00';
+ctx2.fillRect(0, 0, 100, 50);
+ctx.fillStyle = '#f00';
+ctx.fillRect(0, 0, 100, 50);
+ctx.shadowColor = '#0f0';
+ctx.shadowOffsetY = 50;
+ctx.drawImage(offscreenCanvas2, 0, -50);
+_assertPixel(canvas, 50,25, 0,255,0,255);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.canvas.transparent.1.html b/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.canvas.transparent.1.html
new file mode 100644
index 0000000000..1bfcb3bf3b
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.canvas.transparent.1.html
@@ -0,0 +1,34 @@
+
+
+OffscreenCanvas test: 2d.shadow.canvas.transparent.1
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.shadow.canvas.transparent.1
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Shadows are not drawn for transparent canvases
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.canvas.transparent.1.worker.js b/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.canvas.transparent.1.worker.js
new file mode 100644
index 0000000000..413ba6b243
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.canvas.transparent.1.worker.js
@@ -0,0 +1,30 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.shadow.canvas.transparent.1
+// Description:Shadows are not drawn for transparent canvases
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("Shadows are not drawn for transparent canvases");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+var offscreenCanvas2 = new OffscreenCanvas(100, 50);
+var ctx2 = offscreenCanvas2.getContext('2d');
+ctx.fillStyle = '#0f0';
+ctx.fillRect(0, 0, 100, 50);
+ctx.shadowColor = '#f00';
+ctx.shadowOffsetY = 50;
+ctx.drawImage(offscreenCanvas2, 0, -50);
+_assertPixel(canvas, 50,25, 0,255,0,255);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.canvas.transparent.2.html b/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.canvas.transparent.2.html
new file mode 100644
index 0000000000..6d30dfcb85
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.canvas.transparent.2.html
@@ -0,0 +1,42 @@
+
+
+OffscreenCanvas test: 2d.shadow.canvas.transparent.2
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.shadow.canvas.transparent.2
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Shadows are not drawn for transparent parts of canvases
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.canvas.transparent.2.worker.js b/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.canvas.transparent.2.worker.js
new file mode 100644
index 0000000000..d702ded746
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.canvas.transparent.2.worker.js
@@ -0,0 +1,38 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.shadow.canvas.transparent.2
+// Description:Shadows are not drawn for transparent parts of canvases
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("Shadows are not drawn for transparent parts of canvases");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+var offscreenCanvas2 = new OffscreenCanvas(100, 50);
+var ctx2 = offscreenCanvas2.getContext('2d');
+ctx2.fillStyle = '#f00';
+ctx2.fillRect(0, 0, 50, 50);
+ctx.fillStyle = '#0f0';
+ctx.fillRect(0, 0, 50, 50);
+ctx.fillStyle = '#f00';
+ctx.fillRect(50, 0, 50, 50);
+ctx.shadowOffsetY = 50;
+ctx.shadowColor = '#0f0';
+ctx.drawImage(offscreenCanvas2, 50, -50);
+ctx.shadowColor = '#f00';
+ctx.drawImage(offscreenCanvas2, -50, -50);
+_assertPixel(canvas, 25,25, 0,255,0,255);
+_assertPixel(canvas, 50,25, 0,255,0,255);
+_assertPixel(canvas, 75,25, 0,255,0,255);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.clip.1.html b/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.clip.1.html
new file mode 100644
index 0000000000..4beb1214b2
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.clip.1.html
@@ -0,0 +1,40 @@
+
+
+OffscreenCanvas test: 2d.shadow.clip.1
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.shadow.clip.1
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Shadows of clipped shapes are still drawn within the clipping region
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.clip.1.worker.js b/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.clip.1.worker.js
new file mode 100644
index 0000000000..4fafad8330
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.clip.1.worker.js
@@ -0,0 +1,36 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.shadow.clip.1
+// Description:Shadows of clipped shapes are still drawn within the clipping region
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("Shadows of clipped shapes are still drawn within the clipping region");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+ctx.fillStyle = '#0f0';
+ctx.fillRect(0, 0, 50, 50);
+ctx.fillStyle = '#f00';
+ctx.fillRect(50, 0, 50, 50);
+ctx.save();
+ctx.beginPath();
+ctx.rect(50, 0, 50, 50);
+ctx.clip();
+ctx.shadowColor = '#0f0';
+ctx.shadowOffsetX = 50;
+ctx.fillRect(0, 0, 50, 50);
+ctx.restore();
+_assertPixel(canvas, 25,25, 0,255,0,255);
+_assertPixel(canvas, 75,25, 0,255,0,255);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.clip.2.html b/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.clip.2.html
new file mode 100644
index 0000000000..bc3de09db7
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.clip.2.html
@@ -0,0 +1,40 @@
+
+
+OffscreenCanvas test: 2d.shadow.clip.2
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.shadow.clip.2
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Shadows are not drawn outside the clipping region
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.clip.2.worker.js b/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.clip.2.worker.js
new file mode 100644
index 0000000000..dd2712af40
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.clip.2.worker.js
@@ -0,0 +1,36 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.shadow.clip.2
+// Description:Shadows are not drawn outside the clipping region
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("Shadows are not drawn outside the clipping region");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+ctx.fillStyle = '#f00';
+ctx.fillRect(0, 0, 50, 50);
+ctx.fillStyle = '#0f0';
+ctx.fillRect(50, 0, 50, 50);
+ctx.save();
+ctx.beginPath();
+ctx.rect(0, 0, 50, 50);
+ctx.clip();
+ctx.shadowColor = '#f00';
+ctx.shadowOffsetX = 50;
+ctx.fillRect(0, 0, 50, 50);
+ctx.restore();
+_assertPixel(canvas, 25,25, 0,255,0,255);
+_assertPixel(canvas, 75,25, 0,255,0,255);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.clip.3.html b/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.clip.3.html
new file mode 100644
index 0000000000..9656feb41f
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.clip.3.html
@@ -0,0 +1,41 @@
+
+
+OffscreenCanvas test: 2d.shadow.clip.3
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.shadow.clip.3
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Shadows of clipped shapes are still drawn within the clipping region
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.clip.3.worker.js b/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.clip.3.worker.js
new file mode 100644
index 0000000000..ed4983ac8c
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.clip.3.worker.js
@@ -0,0 +1,37 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.shadow.clip.3
+// Description:Shadows of clipped shapes are still drawn within the clipping region
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("Shadows of clipped shapes are still drawn within the clipping region");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+ctx.fillStyle = '#f00';
+ctx.fillRect(0, 0, 50, 50);
+ctx.fillStyle = '#0f0';
+ctx.fillRect(50, 0, 50, 50);
+ctx.save();
+ctx.beginPath();
+ctx.rect(0, 0, 50, 50);
+ctx.clip();
+ctx.fillStyle = '#f00';
+ctx.shadowColor = '#0f0';
+ctx.shadowOffsetX = 50;
+ctx.fillRect(-50, 0, 50, 50);
+ctx.restore();
+_assertPixel(canvas, 25,25, 0,255,0,255);
+_assertPixel(canvas, 75,25, 0,255,0,255);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.composite.1.html b/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.composite.1.html
new file mode 100644
index 0000000000..13e0daf3aa
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.composite.1.html
@@ -0,0 +1,34 @@
+
+
+OffscreenCanvas test: 2d.shadow.composite.1
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.shadow.composite.1
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Shadows are drawn using globalCompositeOperation
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.composite.1.worker.js b/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.composite.1.worker.js
new file mode 100644
index 0000000000..04d4801db9
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.composite.1.worker.js
@@ -0,0 +1,30 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.shadow.composite.1
+// Description:Shadows are drawn using globalCompositeOperation
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("Shadows are drawn using globalCompositeOperation");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+ctx.fillStyle = '#f00';
+ctx.fillRect(0, 0, 100, 50);
+ctx.globalCompositeOperation = 'xor';
+ctx.shadowColor = '#f00';
+ctx.shadowOffsetX = 100;
+ctx.fillStyle = '#0f0';
+ctx.fillRect(-100, 0, 200, 50);
+_assertPixelApprox(canvas, 50,25, 0,255,0,255, 2);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.composite.2.html b/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.composite.2.html
new file mode 100644
index 0000000000..aea36997b6
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.composite.2.html
@@ -0,0 +1,34 @@
+
+
+OffscreenCanvas test: 2d.shadow.composite.2
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.shadow.composite.2
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Shadows are drawn using globalCompositeOperation
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.composite.2.worker.js b/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.composite.2.worker.js
new file mode 100644
index 0000000000..505e3d535f
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.composite.2.worker.js
@@ -0,0 +1,30 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.shadow.composite.2
+// Description:Shadows are drawn using globalCompositeOperation
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("Shadows are drawn using globalCompositeOperation");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+ctx.fillStyle = '#f00';
+ctx.fillRect(0, 0, 100, 50);
+ctx.globalCompositeOperation = 'xor';
+ctx.shadowColor = '#f00';
+ctx.shadowBlur = 1;
+ctx.fillStyle = '#0f0';
+ctx.fillRect(-10, -10, 120, 70);
+_assertPixelApprox(canvas, 50,25, 0,255,0,255, 2);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.composite.3.html b/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.composite.3.html
new file mode 100644
index 0000000000..2218602f38
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.composite.3.html
@@ -0,0 +1,35 @@
+
+
+OffscreenCanvas test: 2d.shadow.composite.3
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.shadow.composite.3
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Areas outside shadows are drawn correctly with destination-out
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.composite.3.worker.js b/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.composite.3.worker.js
new file mode 100644
index 0000000000..fd58d06192
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.composite.3.worker.js
@@ -0,0 +1,31 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.shadow.composite.3
+// Description:Areas outside shadows are drawn correctly with destination-out
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("Areas outside shadows are drawn correctly with destination-out");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+ctx.fillStyle = '#0f0';
+ctx.fillRect(0, 0, 100, 50);
+ctx.globalCompositeOperation = 'destination-out';
+ctx.shadowColor = '#f00';
+ctx.shadowBlur = 10;
+ctx.fillStyle = '#f00';
+ctx.fillRect(200, 0, 100, 50);
+_assertPixelApprox(canvas, 5,5, 0,255,0,255, 2);
+_assertPixelApprox(canvas, 50,25, 0,255,0,255, 2);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.enable.blur.html b/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.enable.blur.html
new file mode 100644
index 0000000000..edc4c527b2
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.enable.blur.html
@@ -0,0 +1,32 @@
+
+
+OffscreenCanvas test: 2d.shadow.enable.blur
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.shadow.enable.blur
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Shadows are drawn if shadowBlur is set
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.enable.blur.worker.js b/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.enable.blur.worker.js
new file mode 100644
index 0000000000..85bf21a086
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.enable.blur.worker.js
@@ -0,0 +1,28 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.shadow.enable.blur
+// Description:Shadows are drawn if shadowBlur is set
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("Shadows are drawn if shadowBlur is set");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+ctx.globalCompositeOperation = 'destination-atop';
+ctx.shadowColor = '#0f0';
+ctx.shadowBlur = 0.1;
+ctx.fillStyle = '#f00';
+ctx.fillRect(0, 0, 100, 50);
+_assertPixel(canvas, 50,25, 0,255,0,255);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.enable.off.1.html b/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.enable.off.1.html
new file mode 100644
index 0000000000..f0c9282090
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.enable.off.1.html
@@ -0,0 +1,30 @@
+
+
+OffscreenCanvas test: 2d.shadow.enable.off.1
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.shadow.enable.off.1
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Shadows are not drawn when only shadowColor is set
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.enable.off.1.worker.js b/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.enable.off.1.worker.js
new file mode 100644
index 0000000000..dae0ea648d
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.enable.off.1.worker.js
@@ -0,0 +1,26 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.shadow.enable.off.1
+// Description:Shadows are not drawn when only shadowColor is set
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("Shadows are not drawn when only shadowColor is set");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+ctx.shadowColor = '#f00';
+ctx.fillStyle = '#0f0';
+ctx.fillRect(0, 0, 100, 50);
+_assertPixel(canvas, 50,25, 0,255,0,255);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.enable.off.2.html b/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.enable.off.2.html
new file mode 100644
index 0000000000..3c27b988c9
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.enable.off.2.html
@@ -0,0 +1,31 @@
+
+
+OffscreenCanvas test: 2d.shadow.enable.off.2
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.shadow.enable.off.2
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Shadows are not drawn when only shadowColor is set
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.enable.off.2.worker.js b/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.enable.off.2.worker.js
new file mode 100644
index 0000000000..2f1573ef3f
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.enable.off.2.worker.js
@@ -0,0 +1,27 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.shadow.enable.off.2
+// Description:Shadows are not drawn when only shadowColor is set
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("Shadows are not drawn when only shadowColor is set");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+ctx.globalCompositeOperation = 'destination-atop';
+ctx.shadowColor = '#f00';
+ctx.fillStyle = '#0f0';
+ctx.fillRect(0, 0, 100, 50);
+_assertPixel(canvas, 50,25, 0,255,0,255);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.enable.x.html b/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.enable.x.html
new file mode 100644
index 0000000000..9107ef25de
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.enable.x.html
@@ -0,0 +1,32 @@
+
+
+OffscreenCanvas test: 2d.shadow.enable.x
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.shadow.enable.x
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Shadows are drawn if shadowOffsetX is set
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.enable.x.worker.js b/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.enable.x.worker.js
new file mode 100644
index 0000000000..d8e7d5039b
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.enable.x.worker.js
@@ -0,0 +1,28 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.shadow.enable.x
+// Description:Shadows are drawn if shadowOffsetX is set
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("Shadows are drawn if shadowOffsetX is set");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+ctx.globalCompositeOperation = 'destination-atop';
+ctx.shadowColor = '#0f0';
+ctx.shadowOffsetX = 0.1;
+ctx.fillStyle = '#f00';
+ctx.fillRect(0, 0, 100, 50);
+_assertPixel(canvas, 50,25, 0,255,0,255);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.enable.y.html b/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.enable.y.html
new file mode 100644
index 0000000000..77a79d8457
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.enable.y.html
@@ -0,0 +1,32 @@
+
+
+OffscreenCanvas test: 2d.shadow.enable.y
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.shadow.enable.y
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Shadows are drawn if shadowOffsetY is set
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.enable.y.worker.js b/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.enable.y.worker.js
new file mode 100644
index 0000000000..53140b13a9
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.enable.y.worker.js
@@ -0,0 +1,28 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.shadow.enable.y
+// Description:Shadows are drawn if shadowOffsetY is set
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("Shadows are drawn if shadowOffsetY is set");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+ctx.globalCompositeOperation = 'destination-atop';
+ctx.shadowColor = '#0f0';
+ctx.shadowOffsetY = 0.1;
+ctx.fillStyle = '#f00';
+ctx.fillRect(0, 0, 100, 50);
+_assertPixel(canvas, 50,25, 0,255,0,255);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.gradient.alpha.html b/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.gradient.alpha.html
new file mode 100644
index 0000000000..d92a248440
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.gradient.alpha.html
@@ -0,0 +1,36 @@
+
+
+OffscreenCanvas test: 2d.shadow.gradient.alpha
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.shadow.gradient.alpha
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Shadows are drawn correctly for partially-transparent gradient fills
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.gradient.alpha.worker.js b/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.gradient.alpha.worker.js
new file mode 100644
index 0000000000..b5b65a0056
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.gradient.alpha.worker.js
@@ -0,0 +1,32 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.shadow.gradient.alpha
+// Description:Shadows are drawn correctly for partially-transparent gradient fills
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("Shadows are drawn correctly for partially-transparent gradient fills");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+var gradient = ctx.createLinearGradient(0, 0, 100, 0);
+gradient.addColorStop(0, 'rgba(255,0,0,0.5)');
+gradient.addColorStop(1, 'rgba(255,0,0,0.5)');
+ctx.fillStyle = '#f00';
+ctx.fillRect(0, 0, 100, 50);
+ctx.shadowOffsetY = 50;
+ctx.shadowColor = '#00f';
+ctx.fillStyle = gradient;
+ctx.fillRect(0, -50, 100, 50);
+_assertPixelApprox(canvas, 50,25, 127,0,127,255, 2);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.gradient.basic.html b/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.gradient.basic.html
new file mode 100644
index 0000000000..b88281be9a
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.gradient.basic.html
@@ -0,0 +1,36 @@
+
+
+OffscreenCanvas test: 2d.shadow.gradient.basic
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.shadow.gradient.basic
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Shadows are drawn for gradient fills
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.gradient.basic.worker.js b/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.gradient.basic.worker.js
new file mode 100644
index 0000000000..ef9ce712f2
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.gradient.basic.worker.js
@@ -0,0 +1,32 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.shadow.gradient.basic
+// Description:Shadows are drawn for gradient fills
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("Shadows are drawn for gradient fills");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+var gradient = ctx.createLinearGradient(0, 0, 100, 0);
+gradient.addColorStop(0, '#f00');
+gradient.addColorStop(1, '#f00');
+ctx.fillStyle = '#f00';
+ctx.fillRect(0, 0, 100, 50);
+ctx.shadowColor = '#0f0';
+ctx.shadowOffsetY = 50;
+ctx.fillStyle = gradient;
+ctx.fillRect(0, -50, 100, 50);
+_assertPixel(canvas, 50,25, 0,255,0,255);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.gradient.transparent.1.html b/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.gradient.transparent.1.html
new file mode 100644
index 0000000000..f71a8b4222
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.gradient.transparent.1.html
@@ -0,0 +1,36 @@
+
+
+OffscreenCanvas test: 2d.shadow.gradient.transparent.1
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.shadow.gradient.transparent.1
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Shadows are not drawn for transparent gradient fills
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.gradient.transparent.1.worker.js b/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.gradient.transparent.1.worker.js
new file mode 100644
index 0000000000..b60d6f7f59
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.gradient.transparent.1.worker.js
@@ -0,0 +1,32 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.shadow.gradient.transparent.1
+// Description:Shadows are not drawn for transparent gradient fills
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("Shadows are not drawn for transparent gradient fills");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+var gradient = ctx.createLinearGradient(0, 0, 100, 0);
+gradient.addColorStop(0, 'rgba(0,0,0,0)');
+gradient.addColorStop(1, 'rgba(0,0,0,0)');
+ctx.fillStyle = '#0f0';
+ctx.fillRect(0, 0, 100, 50);
+ctx.shadowColor = '#f00';
+ctx.shadowOffsetY = 50;
+ctx.fillStyle = gradient;
+ctx.fillRect(0, -50, 100, 50);
+_assertPixel(canvas, 50,25, 0,255,0,255);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.gradient.transparent.2.html b/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.gradient.transparent.2.html
new file mode 100644
index 0000000000..d7c560ec46
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.gradient.transparent.2.html
@@ -0,0 +1,42 @@
+
+
+OffscreenCanvas test: 2d.shadow.gradient.transparent.2
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.shadow.gradient.transparent.2
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Shadows are not drawn for transparent parts of gradient fills
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.gradient.transparent.2.worker.js b/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.gradient.transparent.2.worker.js
new file mode 100644
index 0000000000..7226b004b8
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.gradient.transparent.2.worker.js
@@ -0,0 +1,38 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.shadow.gradient.transparent.2
+// Description:Shadows are not drawn for transparent parts of gradient fills
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("Shadows are not drawn for transparent parts of gradient fills");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+var gradient = ctx.createLinearGradient(0, 0, 100, 0);
+gradient.addColorStop(0, '#f00');
+gradient.addColorStop(0.499, '#f00');
+gradient.addColorStop(0.5, 'rgba(0,0,0,0)');
+gradient.addColorStop(1, 'rgba(0,0,0,0)');
+ctx.fillStyle = '#f00';
+ctx.fillRect(0, 0, 50, 50);
+ctx.fillStyle = '#0f0';
+ctx.fillRect(50, 0, 50, 50);
+ctx.shadowOffsetY = 50;
+ctx.shadowColor = '#0f0';
+ctx.fillStyle = gradient;
+ctx.fillRect(0, -50, 100, 50);
+_assertPixel(canvas, 25,25, 0,255,0,255);
+_assertPixel(canvas, 50,25, 0,255,0,255);
+_assertPixel(canvas, 75,25, 0,255,0,255);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.image.alpha.html b/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.image.alpha.html
new file mode 100644
index 0000000000..5add7eae5a
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.image.alpha.html
@@ -0,0 +1,44 @@
+
+
+OffscreenCanvas test: 2d.shadow.image.alpha
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.shadow.image.alpha
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Shadows are drawn correctly for partially-transparent images
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.image.alpha.worker.js b/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.image.alpha.worker.js
new file mode 100644
index 0000000000..7a1d99218f
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.image.alpha.worker.js
@@ -0,0 +1,40 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.shadow.image.alpha
+// Description:Shadows are drawn correctly for partially-transparent images
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("Shadows are drawn correctly for partially-transparent images");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+ctx.fillStyle = '#f00';
+ctx.fillRect(0, 0, 100, 50);
+ctx.shadowOffsetY = 50;
+ctx.shadowColor = '#00f';
+var promise = new Promise(function(resolve, reject) {
+    var xhr = new XMLHttpRequest();
+    xhr.open("GET", '/images/transparent50.png');
+    xhr.responseType = 'blob';
+    xhr.send();
+    xhr.onload = function() {
+        resolve(xhr.response);
+    };
+});
+promise.then(function(response) {
+    createImageBitmap(response).then(bitmap => {
+        ctx.drawImage(bitmap, 0, -50);
+        _assertPixelApprox(canvas, 50,25, 127,0,127,255, 2);
+    }, t_fail);
+}).then(t_pass, t_fail);
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.image.basic.html b/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.image.basic.html
new file mode 100644
index 0000000000..101cfbab0c
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.image.basic.html
@@ -0,0 +1,44 @@
+
+
+OffscreenCanvas test: 2d.shadow.image.basic
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.shadow.image.basic
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Shadows are drawn for images
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.image.basic.worker.js b/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.image.basic.worker.js
new file mode 100644
index 0000000000..f1d72def72
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.image.basic.worker.js
@@ -0,0 +1,40 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.shadow.image.basic
+// Description:Shadows are drawn for images
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("Shadows are drawn for images");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+ctx.fillStyle = '#f00';
+ctx.fillRect(0, 0, 100, 50);
+ctx.shadowColor = '#0f0';
+ctx.shadowOffsetY = 50;
+var promise = new Promise(function(resolve, reject) {
+    var xhr = new XMLHttpRequest();
+    xhr.open("GET", '/images/red.png');
+    xhr.responseType = 'blob';
+    xhr.send();
+    xhr.onload = function() {
+        resolve(xhr.response);
+    };
+});
+promise.then(function(response) {
+    createImageBitmap(response).then(bitmap => {
+        ctx.drawImage(bitmap, 0, -50);
+        _assertPixel(canvas, 50,25, 0,255,0,255);
+    }, t_fail);
+}).then(t_pass, t_fail);
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.image.scale.html b/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.image.scale.html
new file mode 100644
index 0000000000..c56a73f736
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.image.scale.html
@@ -0,0 +1,46 @@
+
+
+OffscreenCanvas test: 2d.shadow.image.scale
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.shadow.image.scale
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Shadows are drawn correctly for scaled images
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.image.scale.worker.js b/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.image.scale.worker.js
new file mode 100644
index 0000000000..a8c0ead903
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.image.scale.worker.js
@@ -0,0 +1,42 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.shadow.image.scale
+// Description:Shadows are drawn correctly for scaled images
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("Shadows are drawn correctly for scaled images");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+ctx.fillStyle = '#f00';
+ctx.fillRect(0, 0, 100, 50);
+ctx.shadowOffsetY = 50;
+ctx.shadowColor = '#0f0';
+var promise = new Promise(function(resolve, reject) {
+    var xhr = new XMLHttpRequest();
+    xhr.open("GET", '/images/redtransparent.png');
+    xhr.responseType = 'blob';
+    xhr.send();
+    xhr.onload = function() {
+        resolve(xhr.response);
+    };
+});
+promise.then(function(response) {
+    createImageBitmap(response).then(bitmap => {
+        ctx.drawImage(bitmap, 0, 0, 100, 50, -10, -50, 240, 50);
+        _assertPixelApprox(canvas, 25,25, 0,255,0,255, 2);
+        _assertPixelApprox(canvas, 50,25, 0,255,0,255, 2);
+        _assertPixelApprox(canvas, 75,25, 0,255,0,255, 2);
+    }, t_fail);
+}).then(t_pass, t_fail);
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.image.section.html b/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.image.section.html
new file mode 100644
index 0000000000..cd09503499
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.image.section.html
@@ -0,0 +1,46 @@
+
+
+OffscreenCanvas test: 2d.shadow.image.section
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.shadow.image.section
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Shadows are not drawn for areas outside image source rectangles
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.image.section.worker.js b/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.image.section.worker.js
new file mode 100644
index 0000000000..60e32b4883
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.image.section.worker.js
@@ -0,0 +1,42 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.shadow.image.section
+// Description:Shadows are not drawn for areas outside image source rectangles
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("Shadows are not drawn for areas outside image source rectangles");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+ctx.fillStyle = '#0f0';
+ctx.fillRect(0, 0, 100, 50);
+ctx.shadowOffsetY = 50;
+ctx.shadowColor = '#f00';
+var promise = new Promise(function(resolve, reject) {
+    var xhr = new XMLHttpRequest();
+    xhr.open("GET", '/images/redtransparent.png');
+    xhr.responseType = 'blob';
+    xhr.send();
+    xhr.onload = function() {
+        resolve(xhr.response);
+    };
+});
+promise.then(function(response) {
+    createImageBitmap(response).then(bitmap => {
+        ctx.drawImage(bitmap, 50, 0, 50, 50, 0, -50, 50, 50);
+        _assertPixelApprox(canvas, 25,25, 0,255,0,255, 2);
+        _assertPixelApprox(canvas, 50,25, 0,255,0,255, 2);
+        _assertPixelApprox(canvas, 75,25, 0,255,0,255, 2);
+    }, t_fail);
+}).then(t_pass, t_fail);
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.image.transparent.1.html b/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.image.transparent.1.html
new file mode 100644
index 0000000000..37844050a9
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.image.transparent.1.html
@@ -0,0 +1,44 @@
+
+
+OffscreenCanvas test: 2d.shadow.image.transparent.1
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.shadow.image.transparent.1
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Shadows are not drawn for transparent images
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.image.transparent.1.worker.js b/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.image.transparent.1.worker.js
new file mode 100644
index 0000000000..8e8ded8bd3
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.image.transparent.1.worker.js
@@ -0,0 +1,40 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.shadow.image.transparent.1
+// Description:Shadows are not drawn for transparent images
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("Shadows are not drawn for transparent images");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+ctx.fillStyle = '#0f0';
+ctx.fillRect(0, 0, 100, 50);
+ctx.shadowColor = '#f00';
+ctx.shadowOffsetY = 50;
+var promise = new Promise(function(resolve, reject) {
+    var xhr = new XMLHttpRequest();
+    xhr.open("GET", '/images/transparent.png');
+    xhr.responseType = 'blob';
+    xhr.send();
+    xhr.onload = function() {
+        resolve(xhr.response);
+    };
+});
+promise.then(function(response) {
+    createImageBitmap(response).then(bitmap => {
+        ctx.drawImage(bitmap, 0, -50);
+        _assertPixel(canvas, 50,25, 0,255,0,255);
+    }, t_fail);
+}).then(t_pass, t_fail);
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.image.transparent.2.html b/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.image.transparent.2.html
new file mode 100644
index 0000000000..996bce718a
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.image.transparent.2.html
@@ -0,0 +1,50 @@
+
+
+OffscreenCanvas test: 2d.shadow.image.transparent.2
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.shadow.image.transparent.2
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Shadows are not drawn for transparent parts of images
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.image.transparent.2.worker.js b/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.image.transparent.2.worker.js
new file mode 100644
index 0000000000..5075d6cfa7
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.image.transparent.2.worker.js
@@ -0,0 +1,46 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.shadow.image.transparent.2
+// Description:Shadows are not drawn for transparent parts of images
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("Shadows are not drawn for transparent parts of images");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+ctx.fillStyle = '#0f0';
+ctx.fillRect(0, 0, 50, 50);
+ctx.fillStyle = '#f00';
+ctx.fillRect(50, 0, 50, 50);
+ctx.shadowOffsetY = 50;
+ctx.shadowColor = '#0f0';
+var promise = new Promise(function(resolve, reject) {
+    var xhr = new XMLHttpRequest();
+    xhr.open("GET", '/images/redtransparent.png');
+    xhr.responseType = 'blob';
+    xhr.send();
+    xhr.onload = function() {
+        resolve(xhr.response);
+    };
+});
+promise.then(function(response) {
+    createImageBitmap(response).then(bitmap => {
+        ctx.drawImage(bitmap, 50, -50);
+        ctx.shadowColor = '#f00';
+        ctx.drawImage(bitmap, -50, -50);
+        _assertPixel(canvas, 25,25, 0,255,0,255);
+        _assertPixel(canvas, 50,25, 0,255,0,255);
+        _assertPixel(canvas, 75,25, 0,255,0,255);
+    }, t_fail);
+}).then(t_pass, t_fail);
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.offset.negativeX.html b/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.offset.negativeX.html
new file mode 100644
index 0000000000..97c04018ac
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.offset.negativeX.html
@@ -0,0 +1,34 @@
+
+
+OffscreenCanvas test: 2d.shadow.offset.negativeX
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.shadow.offset.negativeX
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Shadows can be offset with negative x
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.offset.negativeX.worker.js b/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.offset.negativeX.worker.js
new file mode 100644
index 0000000000..93c226570f
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.offset.negativeX.worker.js
@@ -0,0 +1,30 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.shadow.offset.negativeX
+// Description:Shadows can be offset with negative x
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("Shadows can be offset with negative x");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+ctx.fillStyle = '#f00';
+ctx.fillRect(0, 0, 100, 50);
+ctx.fillStyle = '#0f0';
+ctx.shadowColor = '#0f0';
+ctx.shadowOffsetX = -50;
+ctx.fillRect(50, 0, 50, 50);
+_assertPixel(canvas, 25,25, 0,255,0,255);
+_assertPixel(canvas, 75,25, 0,255,0,255);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.offset.negativeY.html b/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.offset.negativeY.html
new file mode 100644
index 0000000000..7f5d5ab9a8
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.offset.negativeY.html
@@ -0,0 +1,34 @@
+
+
+OffscreenCanvas test: 2d.shadow.offset.negativeY
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.shadow.offset.negativeY
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Shadows can be offset with negative y
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.offset.negativeY.worker.js b/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.offset.negativeY.worker.js
new file mode 100644
index 0000000000..6ee0bcc7c5
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.offset.negativeY.worker.js
@@ -0,0 +1,30 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.shadow.offset.negativeY
+// Description:Shadows can be offset with negative y
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("Shadows can be offset with negative y");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+ctx.fillStyle = '#f00';
+ctx.fillRect(0, 0, 100, 50);
+ctx.fillStyle = '#0f0';
+ctx.shadowColor = '#0f0';
+ctx.shadowOffsetY = -25;
+ctx.fillRect(0, 25, 100, 25);
+_assertPixel(canvas, 50,12, 0,255,0,255);
+_assertPixel(canvas, 50,37, 0,255,0,255);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.offset.positiveX.html b/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.offset.positiveX.html
new file mode 100644
index 0000000000..a745de88ab
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.offset.positiveX.html
@@ -0,0 +1,34 @@
+
+
+OffscreenCanvas test: 2d.shadow.offset.positiveX
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.shadow.offset.positiveX
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Shadows can be offset with positive x
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.offset.positiveX.worker.js b/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.offset.positiveX.worker.js
new file mode 100644
index 0000000000..241fbda8f3
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.offset.positiveX.worker.js
@@ -0,0 +1,30 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.shadow.offset.positiveX
+// Description:Shadows can be offset with positive x
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("Shadows can be offset with positive x");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+ctx.fillStyle = '#f00';
+ctx.fillRect(0, 0, 100, 50);
+ctx.fillStyle = '#0f0';
+ctx.shadowColor = '#0f0';
+ctx.shadowOffsetX = 50;
+ctx.fillRect(0, 0, 50, 50);
+_assertPixel(canvas, 25,25, 0,255,0,255);
+_assertPixel(canvas, 75,25, 0,255,0,255);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.offset.positiveY.html b/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.offset.positiveY.html
new file mode 100644
index 0000000000..168b179688
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.offset.positiveY.html
@@ -0,0 +1,34 @@
+
+
+OffscreenCanvas test: 2d.shadow.offset.positiveY
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.shadow.offset.positiveY
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Shadows can be offset with positive y
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.offset.positiveY.worker.js b/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.offset.positiveY.worker.js
new file mode 100644
index 0000000000..b3236d66a5
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.offset.positiveY.worker.js
@@ -0,0 +1,30 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.shadow.offset.positiveY
+// Description:Shadows can be offset with positive y
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("Shadows can be offset with positive y");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+ctx.fillStyle = '#f00';
+ctx.fillRect(0, 0, 100, 50);
+ctx.fillStyle = '#0f0';
+ctx.shadowColor = '#0f0';
+ctx.shadowOffsetY = 25;
+ctx.fillRect(0, 0, 100, 25);
+_assertPixel(canvas, 50,12, 0,255,0,255);
+_assertPixel(canvas, 50,37, 0,255,0,255);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.outside.html b/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.outside.html
new file mode 100644
index 0000000000..207160d20f
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.outside.html
@@ -0,0 +1,42 @@
+
+
+OffscreenCanvas test: 2d.shadow.outside
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.shadow.outside
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Shadows of shapes outside the visible area can be offset onto the visible area
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.outside.worker.js b/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.outside.worker.js
new file mode 100644
index 0000000000..d0787d67a4
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.outside.worker.js
@@ -0,0 +1,38 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.shadow.outside
+// Description:Shadows of shapes outside the visible area can be offset onto the visible area
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("Shadows of shapes outside the visible area can be offset onto the visible area");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+ctx.fillStyle = '#f00';
+ctx.fillRect(0, 0, 100, 50);
+ctx.shadowColor = '#0f0';
+ctx.shadowOffsetX = 100;
+ctx.fillRect(-100, 0, 25, 50);
+ctx.shadowOffsetX = -100;
+ctx.fillRect(175, 0, 25, 50);
+ctx.shadowOffsetX = 0;
+ctx.shadowOffsetY = 100;
+ctx.fillRect(25, -100, 50, 25);
+ctx.shadowOffsetY = -100;
+ctx.fillRect(25, 125, 50, 25);
+_assertPixel(canvas, 12,25, 0,255,0,255);
+_assertPixel(canvas, 87,25, 0,255,0,255);
+_assertPixel(canvas, 50,12, 0,255,0,255);
+_assertPixel(canvas, 50,37, 0,255,0,255);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.pattern.alpha.html b/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.pattern.alpha.html
new file mode 100644
index 0000000000..48615eadcf
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.pattern.alpha.html
@@ -0,0 +1,45 @@
+
+
+OffscreenCanvas test: 2d.shadow.pattern.alpha
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.shadow.pattern.alpha
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Shadows are drawn correctly for partially-transparent fill patterns
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.pattern.alpha.worker.js b/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.pattern.alpha.worker.js
new file mode 100644
index 0000000000..6a533845ab
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.pattern.alpha.worker.js
@@ -0,0 +1,41 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.shadow.pattern.alpha
+// Description:Shadows are drawn correctly for partially-transparent fill patterns
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("Shadows are drawn correctly for partially-transparent fill patterns");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+var promise = new Promise(function(resolve, reject) {
+    var xhr = new XMLHttpRequest();
+    xhr.open("GET", '/images/transparent50.png');
+    xhr.responseType = 'blob';
+    xhr.send();
+    xhr.onload = function() {
+        resolve(xhr.response);
+    };
+});
+promise.then(function(response) {
+    createImageBitmap(response).then(bitmap => {
+        var pattern = ctx.createPattern(bitmap, 'repeat');
+        ctx.fillStyle = '#f00';
+        ctx.fillRect(0, 0, 100, 50);
+        ctx.shadowOffsetY = 50;
+        ctx.shadowColor = '#00f';
+        ctx.fillStyle = pattern;
+        ctx.fillRect(0, -50, 100, 50);
+    }, t_fail);
+}).then(t_pass, t_fail);
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.pattern.basic.html b/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.pattern.basic.html
new file mode 100644
index 0000000000..586f7ef336
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.pattern.basic.html
@@ -0,0 +1,45 @@
+
+
+OffscreenCanvas test: 2d.shadow.pattern.basic
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.shadow.pattern.basic
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Shadows are drawn for fill patterns
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.pattern.basic.worker.js b/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.pattern.basic.worker.js
new file mode 100644
index 0000000000..6d2dce7c1b
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.pattern.basic.worker.js
@@ -0,0 +1,41 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.shadow.pattern.basic
+// Description:Shadows are drawn for fill patterns
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("Shadows are drawn for fill patterns");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+var promise = new Promise(function(resolve, reject) {
+    var xhr = new XMLHttpRequest();
+    xhr.open("GET", '/images/red.png');
+    xhr.responseType = 'blob';
+    xhr.send();
+    xhr.onload = function() {
+        resolve(xhr.response);
+    };
+});
+promise.then(function(response) {
+    createImageBitmap(response).then(bitmap => {
+        var pattern = ctx.createPattern(bitmap, 'repeat');
+        ctx.fillStyle = '#f00';
+        ctx.fillRect(0, 0, 100, 50);
+        ctx.shadowColor = '#0f0';
+        ctx.shadowOffsetY = 50;
+        ctx.fillStyle = pattern;
+        ctx.fillRect(0, -50, 100, 50);
+    }, t_fail);
+}).then(t_pass, t_fail);
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.pattern.transparent.1.html b/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.pattern.transparent.1.html
new file mode 100644
index 0000000000..6d97b590af
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.pattern.transparent.1.html
@@ -0,0 +1,45 @@
+
+
+OffscreenCanvas test: 2d.shadow.pattern.transparent.1
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.shadow.pattern.transparent.1
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Shadows are not drawn for transparent fill patterns
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.pattern.transparent.1.worker.js b/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.pattern.transparent.1.worker.js
new file mode 100644
index 0000000000..cda0aa956d
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.pattern.transparent.1.worker.js
@@ -0,0 +1,41 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.shadow.pattern.transparent.1
+// Description:Shadows are not drawn for transparent fill patterns
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("Shadows are not drawn for transparent fill patterns");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+var promise = new Promise(function(resolve, reject) {
+    var xhr = new XMLHttpRequest();
+    xhr.open("GET", '/images/transparent.png');
+    xhr.responseType = 'blob';
+    xhr.send();
+    xhr.onload = function() {
+        resolve(xhr.response);
+    };
+});
+promise.then(function(response) {
+    createImageBitmap(response).then(bitmap => {
+        var pattern = ctx.createPattern(bitmap, 'repeat');
+        ctx.fillStyle = '#0f0';
+        ctx.fillRect(0, 0, 100, 50);
+        ctx.shadowColor = '#f00';
+        ctx.shadowOffsetY = 50;
+        ctx.fillStyle = pattern;
+        ctx.fillRect(0, -50, 100, 50);
+    }, t_fail);
+}).then(t_pass, t_fail);
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.pattern.transparent.2.html b/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.pattern.transparent.2.html
new file mode 100644
index 0000000000..600fbd03ff
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.pattern.transparent.2.html
@@ -0,0 +1,50 @@
+
+
+OffscreenCanvas test: 2d.shadow.pattern.transparent.2
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.shadow.pattern.transparent.2
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Shadows are not drawn for transparent parts of fill patterns
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.pattern.transparent.2.worker.js b/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.pattern.transparent.2.worker.js
new file mode 100644
index 0000000000..2aa3166146
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.pattern.transparent.2.worker.js
@@ -0,0 +1,46 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.shadow.pattern.transparent.2
+// Description:Shadows are not drawn for transparent parts of fill patterns
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("Shadows are not drawn for transparent parts of fill patterns");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+var promise = new Promise(function(resolve, reject) {
+    var xhr = new XMLHttpRequest();
+    xhr.open("GET", '/images/redtransparent.png');
+    xhr.responseType = 'blob';
+    xhr.send();
+    xhr.onload = function() {
+        resolve(xhr.response);
+    };
+});
+promise.then(function(response) {
+    createImageBitmap(response).then(bitmap => {
+        var pattern = ctx.createPattern(bitmap, 'repeat');
+        ctx.fillStyle = '#f00';
+        ctx.fillRect(0, 0, 50, 50);
+        ctx.fillStyle = '#0f0';
+        ctx.fillRect(50, 0, 50, 50);
+        ctx.shadowOffsetY = 50;
+        ctx.shadowColor = '#0f0';
+        ctx.fillStyle = pattern;
+        ctx.fillRect(0, -50, 100, 50);
+        _assertPixel(canvas, 25,25, 0,255,0,255);
+        _assertPixel(canvas, 50,25, 0,255,0,255);
+        _assertPixel(canvas, 75,25, 0,255,0,255);
+    }, t_fail);
+}).then(t_pass, t_fail);
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.stroke.basic.html b/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.stroke.basic.html
new file mode 100644
index 0000000000..2711025134
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.stroke.basic.html
@@ -0,0 +1,39 @@
+
+
+OffscreenCanvas test: 2d.shadow.stroke.basic
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.shadow.stroke.basic
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Shadows are drawn for strokes
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.stroke.basic.worker.js b/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.stroke.basic.worker.js
new file mode 100644
index 0000000000..7ebbd8ec5b
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.stroke.basic.worker.js
@@ -0,0 +1,35 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.shadow.stroke.basic
+// Description:Shadows are drawn for strokes
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("Shadows are drawn for strokes");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+ctx.fillStyle = '#f00';
+ctx.fillRect(0, 0, 100, 50);
+ctx.strokeStyle = '#f00';
+ctx.shadowColor = '#0f0';
+ctx.shadowOffsetY = 50;
+ctx.beginPath();
+ctx.lineWidth = 50;
+ctx.moveTo(0, -25);
+ctx.lineTo(100, -25);
+ctx.stroke();
+_assertPixel(canvas, 1,25, 0,255,0,255);
+_assertPixel(canvas, 50,25, 0,255,0,255);
+_assertPixel(canvas, 98,25, 0,255,0,255);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.stroke.cap.1.html b/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.stroke.cap.1.html
new file mode 100644
index 0000000000..3854669bf0
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.stroke.cap.1.html
@@ -0,0 +1,42 @@
+
+
+OffscreenCanvas test: 2d.shadow.stroke.cap.1
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.shadow.stroke.cap.1
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Shadows are not drawn for areas outside stroke caps
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.stroke.cap.1.worker.js b/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.stroke.cap.1.worker.js
new file mode 100644
index 0000000000..7ecd07b1cd
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.stroke.cap.1.worker.js
@@ -0,0 +1,38 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.shadow.stroke.cap.1
+// Description:Shadows are not drawn for areas outside stroke caps
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("Shadows are not drawn for areas outside stroke caps");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+ctx.fillStyle = '#0f0';
+ctx.fillRect(0, 0, 100, 50);
+ctx.strokeStyle = '#f00';
+ctx.shadowColor = '#f00';
+ctx.shadowOffsetY = 50;
+ctx.beginPath();
+ctx.lineWidth = 50;
+ctx.lineCap = 'butt';
+ctx.moveTo(-50, -25);
+ctx.lineTo(0, -25);
+ctx.moveTo(100, -25);
+ctx.lineTo(150, -25);
+ctx.stroke();
+_assertPixel(canvas, 1,25, 0,255,0,255);
+_assertPixel(canvas, 50,25, 0,255,0,255);
+_assertPixel(canvas, 98,25, 0,255,0,255);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.stroke.cap.2.html b/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.stroke.cap.2.html
new file mode 100644
index 0000000000..bd18ec6f8c
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.stroke.cap.2.html
@@ -0,0 +1,40 @@
+
+
+OffscreenCanvas test: 2d.shadow.stroke.cap.2
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.shadow.stroke.cap.2
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Shadows are drawn for stroke caps
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.stroke.cap.2.worker.js b/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.stroke.cap.2.worker.js
new file mode 100644
index 0000000000..7c7dc26dd9
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.stroke.cap.2.worker.js
@@ -0,0 +1,36 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.shadow.stroke.cap.2
+// Description:Shadows are drawn for stroke caps
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("Shadows are drawn for stroke caps");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+ctx.fillStyle = '#f00';
+ctx.fillRect(0, 0, 100, 50);
+ctx.strokeStyle = '#f00';
+ctx.shadowColor = '#0f0';
+ctx.shadowOffsetY = 50;
+ctx.beginPath();
+ctx.lineWidth = 50;
+ctx.lineCap = 'square';
+ctx.moveTo(25, -25);
+ctx.lineTo(75, -25);
+ctx.stroke();
+_assertPixel(canvas, 1,25, 0,255,0,255);
+_assertPixel(canvas, 50,25, 0,255,0,255);
+_assertPixel(canvas, 98,25, 0,255,0,255);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.stroke.join.1.html b/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.stroke.join.1.html
new file mode 100644
index 0000000000..8faa2fef08
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.stroke.join.1.html
@@ -0,0 +1,42 @@
+
+
+OffscreenCanvas test: 2d.shadow.stroke.join.1
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.shadow.stroke.join.1
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Shadows are not drawn for areas outside stroke joins
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.stroke.join.1.worker.js b/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.stroke.join.1.worker.js
new file mode 100644
index 0000000000..e81a9b212d
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.stroke.join.1.worker.js
@@ -0,0 +1,38 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.shadow.stroke.join.1
+// Description:Shadows are not drawn for areas outside stroke joins
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("Shadows are not drawn for areas outside stroke joins");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+ctx.fillStyle = '#0f0';
+ctx.fillRect(0, 0, 100, 50);
+ctx.strokeStyle = '#f00';
+ctx.shadowColor = '#f00';
+ctx.shadowOffsetX = 100;
+ctx.lineWidth = 200;
+ctx.lineJoin = 'bevel';
+ctx.beginPath();
+ctx.moveTo(-200, -50);
+ctx.lineTo(-150, -50);
+ctx.lineTo(-151, -100);
+ctx.stroke();
+_assertPixel(canvas, 1,1, 0,255,0,255);
+_assertPixel(canvas, 48,48, 0,255,0,255);
+_assertPixel(canvas, 50,25, 0,255,0,255);
+_assertPixel(canvas, 98,48, 0,255,0,255);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.stroke.join.2.html b/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.stroke.join.2.html
new file mode 100644
index 0000000000..7b52a7c950
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.stroke.join.2.html
@@ -0,0 +1,44 @@
+
+
+OffscreenCanvas test: 2d.shadow.stroke.join.2
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.shadow.stroke.join.2
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Shadows are drawn for stroke joins
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.stroke.join.2.worker.js b/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.stroke.join.2.worker.js
new file mode 100644
index 0000000000..269a49d76c
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.stroke.join.2.worker.js
@@ -0,0 +1,40 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.shadow.stroke.join.2
+// Description:Shadows are drawn for stroke joins
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("Shadows are drawn for stroke joins");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+ctx.fillStyle = '#f00';
+ctx.fillRect(0, 0, 50, 50);
+ctx.fillStyle = '#0f0';
+ctx.fillRect(50, 0, 50, 50);
+ctx.strokeStyle = '#f00';
+ctx.shadowColor = '#0f0';
+ctx.shadowOffsetX = 100;
+ctx.lineWidth = 200;
+ctx.lineJoin = 'miter';
+ctx.beginPath();
+ctx.moveTo(-200, -50);
+ctx.lineTo(-150, -50);
+ctx.lineTo(-151, -100);
+ctx.stroke();
+_assertPixel(canvas, 1,1, 0,255,0,255);
+_assertPixel(canvas, 48,48, 0,255,0,255);
+_assertPixel(canvas, 50,25, 0,255,0,255);
+_assertPixel(canvas, 98,48, 0,255,0,255);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.stroke.join.3.html b/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.stroke.join.3.html
new file mode 100644
index 0000000000..6110d3ae40
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.stroke.join.3.html
@@ -0,0 +1,43 @@
+
+
+OffscreenCanvas test: 2d.shadow.stroke.join.3
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.shadow.stroke.join.3
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Shadows are drawn for stroke joins respecting miter limit
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.stroke.join.3.worker.js b/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.stroke.join.3.worker.js
new file mode 100644
index 0000000000..43144b0fd9
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.stroke.join.3.worker.js
@@ -0,0 +1,39 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.shadow.stroke.join.3
+// Description:Shadows are drawn for stroke joins respecting miter limit
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("Shadows are drawn for stroke joins respecting miter limit");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+ctx.fillStyle = '#0f0';
+ctx.fillRect(0, 0, 100, 50);
+ctx.strokeStyle = '#f00';
+ctx.shadowColor = '#f00';
+ctx.shadowOffsetX = 100;
+ctx.lineWidth = 200;
+ctx.lineJoin = 'miter';
+ctx.miterLimit = 0.1;
+ctx.beginPath();
+ctx.moveTo(-200, -50);
+ctx.lineTo(-150, -50);
+ctx.lineTo(-151, -100); // (not an exact right angle, to avoid some other bug in Firefox 3)
+ctx.stroke();
+_assertPixel(canvas, 1,1, 0,255,0,255);
+_assertPixel(canvas, 48,48, 0,255,0,255);
+_assertPixel(canvas, 50,25, 0,255,0,255);
+_assertPixel(canvas, 98,48, 0,255,0,255);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.transform.1.html b/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.transform.1.html
new file mode 100644
index 0000000000..d6c4e483ba
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.transform.1.html
@@ -0,0 +1,33 @@
+
+
+OffscreenCanvas test: 2d.shadow.transform.1
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.shadow.transform.1
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Shadows take account of transformations
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.transform.1.worker.js b/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.transform.1.worker.js
new file mode 100644
index 0000000000..38cdf7eb7c
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.transform.1.worker.js
@@ -0,0 +1,29 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.shadow.transform.1
+// Description:Shadows take account of transformations
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("Shadows take account of transformations");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+ctx.fillStyle = '#f00';
+ctx.fillRect(0, 0, 100, 50);
+ctx.shadowOffsetY = 50;
+ctx.shadowColor = '#0f0';
+ctx.translate(100, 100);
+ctx.fillRect(-100, -150, 100, 50);
+_assertPixel(canvas, 50,25, 0,255,0,255);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.transform.2.html b/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.transform.2.html
new file mode 100644
index 0000000000..f0b1607262
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.transform.2.html
@@ -0,0 +1,33 @@
+
+
+OffscreenCanvas test: 2d.shadow.transform.2
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.shadow.transform.2
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Shadow offsets are not affected by transformations
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.transform.2.worker.js b/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.transform.2.worker.js
new file mode 100644
index 0000000000..9f204d2439
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.transform.2.worker.js
@@ -0,0 +1,29 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.shadow.transform.2
+// Description:Shadow offsets are not affected by transformations
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("Shadow offsets are not affected by transformations");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+ctx.fillStyle = '#f00';
+ctx.fillRect(0, 0, 100, 50);
+ctx.shadowOffsetY = 50;
+ctx.shadowColor = '#0f0';
+ctx.rotate(Math.PI)
+ctx.fillRect(-100, 0, 100, 50);
+_assertPixel(canvas, 50,25, 0,255,0,255);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.align.default.html b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.align.default.html
new file mode 100644
index 0000000000..fda5ee496d
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.align.default.html
@@ -0,0 +1,27 @@
+
+
+OffscreenCanvas test: 2d.text.align.default
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.text.align.default
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.align.default.worker.js b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.align.default.worker.js
new file mode 100644
index 0000000000..b2c940fac6
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.align.default.worker.js
@@ -0,0 +1,23 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.text.align.default
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+_assertSame(ctx.textAlign, 'start', "ctx.textAlign", "'start'");
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.align.invalid.html b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.align.invalid.html
new file mode 100644
index 0000000000..8b6f409a3d
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.align.invalid.html
@@ -0,0 +1,41 @@
+
+
+OffscreenCanvas test: 2d.text.align.invalid
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.text.align.invalid
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.align.invalid.worker.js b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.align.invalid.worker.js
new file mode 100644
index 0000000000..60ad8faac9
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.align.invalid.worker.js
@@ -0,0 +1,37 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.text.align.invalid
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+ctx.textAlign = 'start';
+ctx.textAlign = 'bogus';
+_assertSame(ctx.textAlign, 'start', "ctx.textAlign", "'start'");
+
+ctx.textAlign = 'start';
+ctx.textAlign = 'END';
+_assertSame(ctx.textAlign, 'start', "ctx.textAlign", "'start'");
+
+ctx.textAlign = 'start';
+ctx.textAlign = 'end ';
+_assertSame(ctx.textAlign, 'start', "ctx.textAlign", "'start'");
+
+ctx.textAlign = 'start';
+ctx.textAlign = 'end\0';
+_assertSame(ctx.textAlign, 'start', "ctx.textAlign", "'start'");
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.align.valid.html b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.align.valid.html
new file mode 100644
index 0000000000..a78b58edaa
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.align.valid.html
@@ -0,0 +1,40 @@
+
+
+OffscreenCanvas test: 2d.text.align.valid
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.text.align.valid
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.align.valid.worker.js b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.align.valid.worker.js
new file mode 100644
index 0000000000..fdf1907585
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.align.valid.worker.js
@@ -0,0 +1,36 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.text.align.valid
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+ctx.textAlign = 'start';
+_assertSame(ctx.textAlign, 'start', "ctx.textAlign", "'start'");
+
+ctx.textAlign = 'end';
+_assertSame(ctx.textAlign, 'end', "ctx.textAlign", "'end'");
+
+ctx.textAlign = 'left';
+_assertSame(ctx.textAlign, 'left', "ctx.textAlign", "'left'");
+
+ctx.textAlign = 'right';
+_assertSame(ctx.textAlign, 'right', "ctx.textAlign", "'right'");
+
+ctx.textAlign = 'center';
+_assertSame(ctx.textAlign, 'center', "ctx.textAlign", "'center'");
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.baseline.default.html b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.baseline.default.html
new file mode 100644
index 0000000000..8bd20c6f84
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.baseline.default.html
@@ -0,0 +1,27 @@
+
+
+OffscreenCanvas test: 2d.text.baseline.default
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.text.baseline.default
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.baseline.default.worker.js b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.baseline.default.worker.js
new file mode 100644
index 0000000000..ea8693f0a0
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.baseline.default.worker.js
@@ -0,0 +1,23 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.text.baseline.default
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+_assertSame(ctx.textBaseline, 'alphabetic', "ctx.textBaseline", "'alphabetic'");
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.baseline.invalid.html b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.baseline.invalid.html
new file mode 100644
index 0000000000..a850ac146f
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.baseline.invalid.html
@@ -0,0 +1,41 @@
+
+
+OffscreenCanvas test: 2d.text.baseline.invalid
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.text.baseline.invalid
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.baseline.invalid.worker.js b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.baseline.invalid.worker.js
new file mode 100644
index 0000000000..d4cdc858b2
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.baseline.invalid.worker.js
@@ -0,0 +1,37 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.text.baseline.invalid
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+ctx.textBaseline = 'top';
+ctx.textBaseline = 'bogus';
+_assertSame(ctx.textBaseline, 'top', "ctx.textBaseline", "'top'");
+
+ctx.textBaseline = 'top';
+ctx.textBaseline = 'MIDDLE';
+_assertSame(ctx.textBaseline, 'top', "ctx.textBaseline", "'top'");
+
+ctx.textBaseline = 'top';
+ctx.textBaseline = 'middle ';
+_assertSame(ctx.textBaseline, 'top', "ctx.textBaseline", "'top'");
+
+ctx.textBaseline = 'top';
+ctx.textBaseline = 'middle\0';
+_assertSame(ctx.textBaseline, 'top', "ctx.textBaseline", "'top'");
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.baseline.valid.html b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.baseline.valid.html
new file mode 100644
index 0000000000..8fdc058844
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.baseline.valid.html
@@ -0,0 +1,43 @@
+
+
+OffscreenCanvas test: 2d.text.baseline.valid
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.text.baseline.valid
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.baseline.valid.worker.js b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.baseline.valid.worker.js
new file mode 100644
index 0000000000..62f6983ddb
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.baseline.valid.worker.js
@@ -0,0 +1,39 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.text.baseline.valid
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+ctx.textBaseline = 'top';
+_assertSame(ctx.textBaseline, 'top', "ctx.textBaseline", "'top'");
+
+ctx.textBaseline = 'hanging';
+_assertSame(ctx.textBaseline, 'hanging', "ctx.textBaseline", "'hanging'");
+
+ctx.textBaseline = 'middle';
+_assertSame(ctx.textBaseline, 'middle', "ctx.textBaseline", "'middle'");
+
+ctx.textBaseline = 'alphabetic';
+_assertSame(ctx.textBaseline, 'alphabetic', "ctx.textBaseline", "'alphabetic'");
+
+ctx.textBaseline = 'ideographic';
+_assertSame(ctx.textBaseline, 'ideographic', "ctx.textBaseline", "'ideographic'");
+
+ctx.textBaseline = 'bottom';
+_assertSame(ctx.textBaseline, 'bottom', "ctx.textBaseline", "'bottom'");
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.draw.align.center.html b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.draw.align.center.html
new file mode 100644
index 0000000000..438e6756a0
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.draw.align.center.html
@@ -0,0 +1,43 @@
+
+
+OffscreenCanvas test: 2d.text.draw.align.center
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.text.draw.align.center
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              textAlign center is the center of the em squares (not the bounding box)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.draw.align.center.worker.js b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.draw.align.center.worker.js
new file mode 100644
index 0000000000..9487e6ab8e
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.draw.align.center.worker.js
@@ -0,0 +1,39 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.text.draw.align.center
+// Description:textAlign center is the center of the em squares (not the bounding box)
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("textAlign center is the center of the em squares (not the bounding box)");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+var f = new FontFace("CanvasTest", "url('/fonts/CanvasTest.ttf')");
+let fonts = (self.fonts ? self.fonts : document.fonts);
+f.load();
+fonts.add(f);
+fonts.ready.then(function() {
+    ctx.font = '50px CanvasTest';
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.fillStyle = '#0f0';
+    ctx.textAlign = 'center';
+    ctx.fillText('DD', 50, 37.5);
+    _assertPixelApprox(canvas, 5,5, 0,255,0,255, 2);
+    _assertPixelApprox(canvas, 95,5, 0,255,0,255, 2);
+    _assertPixelApprox(canvas, 25,25, 0,255,0,255, 2);
+    _assertPixelApprox(canvas, 75,25, 0,255,0,255, 2);
+    _assertPixelApprox(canvas, 5,45, 0,255,0,255, 2);
+    _assertPixelApprox(canvas, 95,45, 0,255,0,255, 2);
+  }).then(t_pass, t_fail);
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.draw.align.end.ltr.html b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.draw.align.end.ltr.html
new file mode 100644
index 0000000000..6134042bdc
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.draw.align.end.ltr.html
@@ -0,0 +1,44 @@
+
+
+OffscreenCanvas test: 2d.text.draw.align.end.ltr
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.text.draw.align.end.ltr
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              textAlign end with ltr is the right edge
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.draw.align.end.ltr.worker.js b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.draw.align.end.ltr.worker.js
new file mode 100644
index 0000000000..2a7b9e9418
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.draw.align.end.ltr.worker.js
@@ -0,0 +1,40 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.text.draw.align.end.ltr
+// Description:textAlign end with ltr is the right edge
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("textAlign end with ltr is the right edge");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+var f = new FontFace("CanvasTest", "url('/fonts/CanvasTest.ttf')");
+let fonts = (self.fonts ? self.fonts : document.fonts);
+f.load();
+fonts.add(f);
+fonts.ready.then(function() {
+    ctx.font = '50px CanvasTest';
+    ctx.direction = 'ltr';
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.fillStyle = '#0f0';
+    ctx.textAlign = 'end';
+    ctx.fillText('DD', 100, 37.5);
+    _assertPixelApprox(canvas, 5,5, 0,255,0,255, 2);
+    _assertPixelApprox(canvas, 95,5, 0,255,0,255, 2);
+    _assertPixelApprox(canvas, 25,25, 0,255,0,255, 2);
+    _assertPixelApprox(canvas, 75,25, 0,255,0,255, 2);
+    _assertPixelApprox(canvas, 5,45, 0,255,0,255, 2);
+    _assertPixelApprox(canvas, 95,45, 0,255,0,255, 2);
+  }).then(t_pass, t_fail);
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.draw.align.end.rtl.html b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.draw.align.end.rtl.html
new file mode 100644
index 0000000000..a4b502480a
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.draw.align.end.rtl.html
@@ -0,0 +1,44 @@
+
+
+OffscreenCanvas test: 2d.text.draw.align.end.rtl
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.text.draw.align.end.rtl
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              textAlign end with rtl is the left edge
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.draw.align.end.rtl.worker.js b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.draw.align.end.rtl.worker.js
new file mode 100644
index 0000000000..deb8227ec4
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.draw.align.end.rtl.worker.js
@@ -0,0 +1,40 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.text.draw.align.end.rtl
+// Description:textAlign end with rtl is the left edge
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("textAlign end with rtl is the left edge");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+var f = new FontFace("CanvasTest", "url('/fonts/CanvasTest.ttf')");
+let fonts = (self.fonts ? self.fonts : document.fonts);
+f.load();
+fonts.add(f);
+fonts.ready.then(function() {
+    ctx.font = '50px CanvasTest';
+    ctx.direction = 'rtl';
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.fillStyle = '#0f0';
+    ctx.textAlign = 'end';
+    ctx.fillText('DD', 0, 37.5);
+    _assertPixelApprox(canvas, 5,5, 0,255,0,255, 2);
+    _assertPixelApprox(canvas, 95,5, 0,255,0,255, 2);
+    _assertPixelApprox(canvas, 25,25, 0,255,0,255, 2);
+    _assertPixelApprox(canvas, 75,25, 0,255,0,255, 2);
+    _assertPixelApprox(canvas, 5,45, 0,255,0,255, 2);
+    _assertPixelApprox(canvas, 95,45, 0,255,0,255, 2);
+  }).then(t_pass, t_fail);
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.draw.align.left.html b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.draw.align.left.html
new file mode 100644
index 0000000000..6e69a830a4
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.draw.align.left.html
@@ -0,0 +1,43 @@
+
+
+OffscreenCanvas test: 2d.text.draw.align.left
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.text.draw.align.left
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              textAlign left is the left of the first em square (not the bounding box)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.draw.align.left.worker.js b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.draw.align.left.worker.js
new file mode 100644
index 0000000000..9c55512653
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.draw.align.left.worker.js
@@ -0,0 +1,39 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.text.draw.align.left
+// Description:textAlign left is the left of the first em square (not the bounding box)
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("textAlign left is the left of the first em square (not the bounding box)");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+var f = new FontFace("CanvasTest", "url('/fonts/CanvasTest.ttf')");
+let fonts = (self.fonts ? self.fonts : document.fonts);
+f.load();
+fonts.add(f);
+fonts.ready.then(function() {
+    ctx.font = '50px CanvasTest';
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.fillStyle = '#0f0';
+    ctx.textAlign = 'left';
+    ctx.fillText('DD', 0, 37.5);
+    _assertPixelApprox(canvas, 5,5, 0,255,0,255, 2);
+    _assertPixelApprox(canvas, 95,5, 0,255,0,255, 2);
+    _assertPixelApprox(canvas, 25,25, 0,255,0,255, 2);
+    _assertPixelApprox(canvas, 75,25, 0,255,0,255, 2);
+    _assertPixelApprox(canvas, 5,45, 0,255,0,255, 2);
+    _assertPixelApprox(canvas, 95,45, 0,255,0,255, 2);
+  }).then(t_pass, t_fail);
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.draw.align.right.html b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.draw.align.right.html
new file mode 100644
index 0000000000..a56c7cab1d
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.draw.align.right.html
@@ -0,0 +1,43 @@
+
+
+OffscreenCanvas test: 2d.text.draw.align.right
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.text.draw.align.right
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              textAlign right is the right of the last em square (not the bounding box)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.draw.align.right.worker.js b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.draw.align.right.worker.js
new file mode 100644
index 0000000000..f246963f60
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.draw.align.right.worker.js
@@ -0,0 +1,39 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.text.draw.align.right
+// Description:textAlign right is the right of the last em square (not the bounding box)
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("textAlign right is the right of the last em square (not the bounding box)");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+var f = new FontFace("CanvasTest", "url('/fonts/CanvasTest.ttf')");
+let fonts = (self.fonts ? self.fonts : document.fonts);
+f.load();
+fonts.add(f);
+fonts.ready.then(function() {
+    ctx.font = '50px CanvasTest';
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.fillStyle = '#0f0';
+    ctx.textAlign = 'right';
+    ctx.fillText('DD', 100, 37.5);
+    _assertPixelApprox(canvas, 5,5, 0,255,0,255, 2);
+    _assertPixelApprox(canvas, 95,5, 0,255,0,255, 2);
+    _assertPixelApprox(canvas, 25,25, 0,255,0,255, 2);
+    _assertPixelApprox(canvas, 75,25, 0,255,0,255, 2);
+    _assertPixelApprox(canvas, 5,45, 0,255,0,255, 2);
+    _assertPixelApprox(canvas, 95,45, 0,255,0,255, 2);
+  }).then(t_pass, t_fail);
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.draw.align.start.ltr.html b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.draw.align.start.ltr.html
new file mode 100644
index 0000000000..ba8c440c43
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.draw.align.start.ltr.html
@@ -0,0 +1,44 @@
+
+
+OffscreenCanvas test: 2d.text.draw.align.start.ltr
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.text.draw.align.start.ltr
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              textAlign start with ltr is the left edge
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.draw.align.start.ltr.worker.js b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.draw.align.start.ltr.worker.js
new file mode 100644
index 0000000000..2de9d50fab
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.draw.align.start.ltr.worker.js
@@ -0,0 +1,40 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.text.draw.align.start.ltr
+// Description:textAlign start with ltr is the left edge
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("textAlign start with ltr is the left edge");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+var f = new FontFace("CanvasTest", "url('/fonts/CanvasTest.ttf')");
+let fonts = (self.fonts ? self.fonts : document.fonts);
+f.load();
+fonts.add(f);
+fonts.ready.then(function() {
+    ctx.font = '50px CanvasTest';
+    ctx.direction = 'ltr';
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.fillStyle = '#0f0';
+    ctx.textAlign = 'start';
+    ctx.fillText('DD', 0, 37.5);
+    _assertPixelApprox(canvas, 5,5, 0,255,0,255, 2);
+    _assertPixelApprox(canvas, 95,5, 0,255,0,255, 2);
+    _assertPixelApprox(canvas, 25,25, 0,255,0,255, 2);
+    _assertPixelApprox(canvas, 75,25, 0,255,0,255, 2);
+    _assertPixelApprox(canvas, 5,45, 0,255,0,255, 2);
+    _assertPixelApprox(canvas, 95,45, 0,255,0,255, 2);
+  }).then(t_pass, t_fail);
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.draw.align.start.rtl.html b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.draw.align.start.rtl.html
new file mode 100644
index 0000000000..32f83430e0
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.draw.align.start.rtl.html
@@ -0,0 +1,44 @@
+
+
+OffscreenCanvas test: 2d.text.draw.align.start.rtl
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.text.draw.align.start.rtl
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              textAlign start with rtl is the right edge
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.draw.align.start.rtl.worker.js b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.draw.align.start.rtl.worker.js
new file mode 100644
index 0000000000..41cb57b958
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.draw.align.start.rtl.worker.js
@@ -0,0 +1,40 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.text.draw.align.start.rtl
+// Description:textAlign start with rtl is the right edge
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("textAlign start with rtl is the right edge");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+var f = new FontFace("CanvasTest", "url('/fonts/CanvasTest.ttf')");
+let fonts = (self.fonts ? self.fonts : document.fonts);
+f.load();
+fonts.add(f);
+fonts.ready.then(function() {
+    ctx.font = '50px CanvasTest';
+    ctx.direction = 'rtl';
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.fillStyle = '#0f0';
+    ctx.textAlign = 'start';
+    ctx.fillText('DD', 100, 37.5);
+    _assertPixelApprox(canvas, 5,5, 0,255,0,255, 2);
+    _assertPixelApprox(canvas, 95,5, 0,255,0,255, 2);
+    _assertPixelApprox(canvas, 25,25, 0,255,0,255, 2);
+    _assertPixelApprox(canvas, 75,25, 0,255,0,255, 2);
+    _assertPixelApprox(canvas, 5,45, 0,255,0,255, 2);
+    _assertPixelApprox(canvas, 95,45, 0,255,0,255, 2);
+  }).then(t_pass, t_fail);
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.draw.baseline.alphabetic.html b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.draw.baseline.alphabetic.html
new file mode 100644
index 0000000000..bd6a1804a5
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.draw.baseline.alphabetic.html
@@ -0,0 +1,43 @@
+
+
+OffscreenCanvas test: 2d.text.draw.baseline.alphabetic
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.text.draw.baseline.alphabetic
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.draw.baseline.alphabetic.worker.js b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.draw.baseline.alphabetic.worker.js
new file mode 100644
index 0000000000..5b4fe08b13
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.draw.baseline.alphabetic.worker.js
@@ -0,0 +1,39 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.text.draw.baseline.alphabetic
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+var f = new FontFace("CanvasTest", "url('/fonts/CanvasTest.ttf')");
+let fonts = (self.fonts ? self.fonts : document.fonts);
+f.load();
+fonts.add(f);
+fonts.ready.then(function() {
+    ctx.font = '50px CanvasTest';
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.fillStyle = '#0f0';
+    ctx.textBaseline = 'alphabetic';
+    ctx.fillText('CC', 0, 37.5);
+    _assertPixelApprox(canvas, 5,5, 0,255,0,255, 2);
+    _assertPixelApprox(canvas, 95,5, 0,255,0,255, 2);
+    _assertPixelApprox(canvas, 25,25, 0,255,0,255, 2);
+    _assertPixelApprox(canvas, 75,25, 0,255,0,255, 2);
+    _assertPixelApprox(canvas, 5,45, 0,255,0,255, 2);
+    _assertPixelApprox(canvas, 95,45, 0,255,0,255, 2);
+  }).then(t_pass, t_fail);
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.draw.baseline.bottom.html b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.draw.baseline.bottom.html
new file mode 100644
index 0000000000..4e5fc8e346
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.draw.baseline.bottom.html
@@ -0,0 +1,43 @@
+
+
+OffscreenCanvas test: 2d.text.draw.baseline.bottom
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.text.draw.baseline.bottom
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              textBaseline bottom is the bottom of the em square (not the bounding box)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.draw.baseline.bottom.worker.js b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.draw.baseline.bottom.worker.js
new file mode 100644
index 0000000000..1c7cab3ef9
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.draw.baseline.bottom.worker.js
@@ -0,0 +1,39 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.text.draw.baseline.bottom
+// Description:textBaseline bottom is the bottom of the em square (not the bounding box)
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("textBaseline bottom is the bottom of the em square (not the bounding box)");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+var f = new FontFace("CanvasTest", "url('/fonts/CanvasTest.ttf')");
+let fonts = (self.fonts ? self.fonts : document.fonts);
+f.load();
+fonts.add(f);
+fonts.ready.then(function() {
+    ctx.font = '50px CanvasTest';
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.fillStyle = '#0f0';
+    ctx.textBaseline = 'bottom';
+    ctx.fillText('CC', 0, 50);
+    _assertPixelApprox(canvas, 5,5, 0,255,0,255, 2);
+    _assertPixelApprox(canvas, 95,5, 0,255,0,255, 2);
+    _assertPixelApprox(canvas, 25,25, 0,255,0,255, 2);
+    _assertPixelApprox(canvas, 75,25, 0,255,0,255, 2);
+    _assertPixelApprox(canvas, 5,45, 0,255,0,255, 2);
+    _assertPixelApprox(canvas, 95,45, 0,255,0,255, 2);
+  }).then(t_pass, t_fail);
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.draw.baseline.hanging.html b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.draw.baseline.hanging.html
new file mode 100644
index 0000000000..d0d573790d
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.draw.baseline.hanging.html
@@ -0,0 +1,43 @@
+
+
+OffscreenCanvas test: 2d.text.draw.baseline.hanging
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.text.draw.baseline.hanging
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.draw.baseline.hanging.worker.js b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.draw.baseline.hanging.worker.js
new file mode 100644
index 0000000000..79df7d8e48
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.draw.baseline.hanging.worker.js
@@ -0,0 +1,39 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.text.draw.baseline.hanging
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+var f = new FontFace("CanvasTest", "url('/fonts/CanvasTest.ttf')");
+let fonts = (self.fonts ? self.fonts : document.fonts);
+f.load();
+fonts.add(f);
+fonts.ready.then(function() {
+    ctx.font = '50px CanvasTest';
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.fillStyle = '#0f0';
+    ctx.textBaseline = 'hanging';
+    ctx.fillText('CC', 0, 12.5);
+    _assertPixelApprox(canvas, 5,5, 0,255,0,255, 2);
+    _assertPixelApprox(canvas, 95,5, 0,255,0,255, 2);
+    _assertPixelApprox(canvas, 25,25, 0,255,0,255, 2);
+    _assertPixelApprox(canvas, 75,25, 0,255,0,255, 2);
+    _assertPixelApprox(canvas, 5,45, 0,255,0,255, 2);
+    _assertPixelApprox(canvas, 95,45, 0,255,0,255, 2);
+  }).then(t_pass, t_fail);
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.draw.baseline.ideographic.html b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.draw.baseline.ideographic.html
new file mode 100644
index 0000000000..144d56f784
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.draw.baseline.ideographic.html
@@ -0,0 +1,43 @@
+
+
+OffscreenCanvas test: 2d.text.draw.baseline.ideographic
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.text.draw.baseline.ideographic
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.draw.baseline.ideographic.worker.js b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.draw.baseline.ideographic.worker.js
new file mode 100644
index 0000000000..ef7d0180cd
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.draw.baseline.ideographic.worker.js
@@ -0,0 +1,39 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.text.draw.baseline.ideographic
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+var f = new FontFace("CanvasTest", "url('/fonts/CanvasTest.ttf')");
+let fonts = (self.fonts ? self.fonts : document.fonts);
+f.load();
+fonts.add(f);
+fonts.ready.then(function() {
+    ctx.font = '50px CanvasTest';
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.fillStyle = '#0f0';
+    ctx.textBaseline = 'ideographic';
+    ctx.fillText('CC', 0, 31.25);
+    _assertPixelApprox(canvas, 5,5, 0,255,0,255, 2);
+    _assertPixelApprox(canvas, 95,5, 0,255,0,255, 2);
+    _assertPixelApprox(canvas, 25,25, 0,255,0,255, 2);
+    _assertPixelApprox(canvas, 75,25, 0,255,0,255, 2);
+    _assertPixelApprox(canvas, 5,45, 0,255,0,255, 2);
+    _assertPixelApprox(canvas, 95,45, 0,255,0,255, 2);
+  }).then(t_pass, t_fail);
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.draw.baseline.middle.html b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.draw.baseline.middle.html
new file mode 100644
index 0000000000..3072264bb4
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.draw.baseline.middle.html
@@ -0,0 +1,43 @@
+
+
+OffscreenCanvas test: 2d.text.draw.baseline.middle
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.text.draw.baseline.middle
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              textBaseline middle is the middle of the em square (not the bounding box)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.draw.baseline.middle.worker.js b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.draw.baseline.middle.worker.js
new file mode 100644
index 0000000000..a0509b6711
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.draw.baseline.middle.worker.js
@@ -0,0 +1,39 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.text.draw.baseline.middle
+// Description:textBaseline middle is the middle of the em square (not the bounding box)
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("textBaseline middle is the middle of the em square (not the bounding box)");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+var f = new FontFace("CanvasTest", "url('/fonts/CanvasTest.ttf')");
+let fonts = (self.fonts ? self.fonts : document.fonts);
+f.load();
+fonts.add(f);
+fonts.ready.then(function() {
+    ctx.font = '50px CanvasTest';
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.fillStyle = '#0f0';
+    ctx.textBaseline = 'middle';
+    ctx.fillText('CC', 0, 25);
+    _assertPixelApprox(canvas, 5,5, 0,255,0,255, 2);
+    _assertPixelApprox(canvas, 95,5, 0,255,0,255, 2);
+    _assertPixelApprox(canvas, 25,25, 0,255,0,255, 2);
+    _assertPixelApprox(canvas, 75,25, 0,255,0,255, 2);
+    _assertPixelApprox(canvas, 5,45, 0,255,0,255, 2);
+    _assertPixelApprox(canvas, 95,45, 0,255,0,255, 2);
+  }).then(t_pass, t_fail);
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.draw.baseline.top.html b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.draw.baseline.top.html
new file mode 100644
index 0000000000..a077aff348
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.draw.baseline.top.html
@@ -0,0 +1,43 @@
+
+
+OffscreenCanvas test: 2d.text.draw.baseline.top
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.text.draw.baseline.top
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              textBaseline top is the top of the em square (not the bounding box)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.draw.baseline.top.worker.js b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.draw.baseline.top.worker.js
new file mode 100644
index 0000000000..bbc7fc06a3
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.draw.baseline.top.worker.js
@@ -0,0 +1,39 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.text.draw.baseline.top
+// Description:textBaseline top is the top of the em square (not the bounding box)
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("textBaseline top is the top of the em square (not the bounding box)");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+var f = new FontFace("CanvasTest", "url('/fonts/CanvasTest.ttf')");
+let fonts = (self.fonts ? self.fonts : document.fonts);
+f.load();
+fonts.add(f);
+fonts.ready.then(function() {
+    ctx.font = '50px CanvasTest';
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.fillStyle = '#0f0';
+    ctx.textBaseline = 'top';
+    ctx.fillText('CC', 0, 0);
+    _assertPixelApprox(canvas, 5,5, 0,255,0,255, 2);
+    _assertPixelApprox(canvas, 95,5, 0,255,0,255, 2);
+    _assertPixelApprox(canvas, 25,25, 0,255,0,255, 2);
+    _assertPixelApprox(canvas, 75,25, 0,255,0,255, 2);
+    _assertPixelApprox(canvas, 5,45, 0,255,0,255, 2);
+    _assertPixelApprox(canvas, 95,45, 0,255,0,255, 2);
+  }).then(t_pass, t_fail);
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.draw.fill.basic-manual.html b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.draw.fill.basic-manual.html
new file mode 100644
index 0000000000..5c364f58a6
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.draw.fill.basic-manual.html
@@ -0,0 +1,32 @@
+
+
+OffscreenCanvas test: 2d.text.draw.fill.basic
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.text.draw.fill.basic
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              fillText draws filled text
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.draw.fill.basic-manual.worker.js b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.draw.fill.basic-manual.worker.js
new file mode 100644
index 0000000000..b75be08977
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.draw.fill.basic-manual.worker.js
@@ -0,0 +1,28 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.text.draw.fill.basic
+// Description:fillText draws filled text
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("fillText draws filled text");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+ctx.fillStyle = '#000';
+ctx.fillRect(0, 0, 100, 50);
+ctx.fillStyle = '#0f0';
+ctx.strokeStyle = '#f00';
+ctx.font = '35px Arial, sans-serif';
+ctx.fillText('PASS', 5, 35);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.draw.fill.basic.png b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.draw.fill.basic.png
new file mode 100644
index 0000000000..70d7b046cb
Binary files /dev/null and b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.draw.fill.basic.png differ
diff --git a/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.draw.fill.maxWidth.NaN.html b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.draw.fill.maxWidth.NaN.html
new file mode 100644
index 0000000000..4bef0e3d70
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.draw.fill.maxWidth.NaN.html
@@ -0,0 +1,32 @@
+
+
+OffscreenCanvas test: 2d.text.draw.fill.maxWidth.NaN
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.text.draw.fill.maxWidth.NaN
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              fillText handles maxWidth correctly
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.draw.fill.maxWidth.NaN.worker.js b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.draw.fill.maxWidth.NaN.worker.js
new file mode 100644
index 0000000000..32a673f495
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.draw.fill.maxWidth.NaN.worker.js
@@ -0,0 +1,28 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.text.draw.fill.maxWidth.NaN
+// Description:fillText handles maxWidth correctly
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("fillText handles maxWidth correctly");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+ctx.fillStyle = '#0f0';
+ctx.fillRect(0, 0, 100, 50);
+ctx.fillStyle = '#f00';
+ctx.font = '35px Arial, sans-serif';
+ctx.fillText('fail fail fail fail fail', 5, 35, NaN);
+_assertGreen(ctx, 100, 50);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.draw.fill.maxWidth.bound.html b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.draw.fill.maxWidth.bound.html
new file mode 100644
index 0000000000..63b30966f4
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.draw.fill.maxWidth.bound.html
@@ -0,0 +1,40 @@
+
+
+OffscreenCanvas test: 2d.text.draw.fill.maxWidth.bound
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.text.draw.fill.maxWidth.bound
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              fillText handles maxWidth based on line size, not bounding box size
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.draw.fill.maxWidth.bound.worker.js b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.draw.fill.maxWidth.bound.worker.js
new file mode 100644
index 0000000000..092289baf4
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.draw.fill.maxWidth.bound.worker.js
@@ -0,0 +1,36 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.text.draw.fill.maxWidth.bound
+// Description:fillText handles maxWidth based on line size, not bounding box size
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("fillText handles maxWidth based on line size, not bounding box size");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+var f = new FontFace("CanvasTest", "url('/fonts/CanvasTest.ttf')");
+let fonts = (self.fonts ? self.fonts : document.fonts);
+f.load();
+fonts.add(f);
+fonts.ready.then(function() {
+    ctx.font = '50px CanvasTest';
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.fillStyle = '#0f0';
+    ctx.fillText('DD', 0, 37.5, 100);
+    _assertPixelApprox(canvas, 5,5, 0,255,0,255, 2);
+    _assertPixelApprox(canvas, 95,5, 0,255,0,255, 2);
+    _assertPixelApprox(canvas, 25,25, 0,255,0,255, 2);
+    _assertPixelApprox(canvas, 75,25, 0,255,0,255, 2);
+  }).then(t_pass, t_fail);
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.draw.fill.maxWidth.fontface.html b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.draw.fill.maxWidth.fontface.html
new file mode 100644
index 0000000000..9294bf9973
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.draw.fill.maxWidth.fontface.html
@@ -0,0 +1,40 @@
+
+
+OffscreenCanvas test: 2d.text.draw.fill.maxWidth.fontface
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.text.draw.fill.maxWidth.fontface
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              fillText works on @font-face fonts
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.draw.fill.maxWidth.fontface.worker.js b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.draw.fill.maxWidth.fontface.worker.js
new file mode 100644
index 0000000000..99cc25e7ae
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.draw.fill.maxWidth.fontface.worker.js
@@ -0,0 +1,36 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.text.draw.fill.maxWidth.fontface
+// Description:fillText works on @font-face fonts
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("fillText works on @font-face fonts");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+var f = new FontFace("CanvasTest", "url('/fonts/CanvasTest.ttf')");
+let fonts = (self.fonts ? self.fonts : document.fonts);
+f.load();
+fonts.add(f);
+fonts.ready.then(function() {
+    ctx.font = '50px CanvasTest';
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.fillStyle = '#f00';
+    ctx.fillText('EEEE', -50, 37.5, 40);
+    _assertPixelApprox(canvas, 5,5, 0,255,0,255, 2);
+    _assertPixelApprox(canvas, 95,5, 0,255,0,255, 2);
+    _assertPixelApprox(canvas, 25,25, 0,255,0,255, 2);
+    _assertPixelApprox(canvas, 75,25, 0,255,0,255, 2);
+  }).then(t_pass, t_fail);
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.draw.fill.maxWidth.large-manual.html b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.draw.fill.maxWidth.large-manual.html
new file mode 100644
index 0000000000..838b3f83ee
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.draw.fill.maxWidth.large-manual.html
@@ -0,0 +1,31 @@
+
+
+OffscreenCanvas test: 2d.text.draw.fill.maxWidth.large
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.text.draw.fill.maxWidth.large
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              fillText handles maxWidth correctly
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.draw.fill.maxWidth.large-manual.worker.js b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.draw.fill.maxWidth.large-manual.worker.js
new file mode 100644
index 0000000000..e124b08ebc
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.draw.fill.maxWidth.large-manual.worker.js
@@ -0,0 +1,27 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.text.draw.fill.maxWidth.large
+// Description:fillText handles maxWidth correctly
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("fillText handles maxWidth correctly");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+ctx.fillStyle = '#000';
+ctx.fillRect(0, 0, 100, 50);
+ctx.fillStyle = '#0f0';
+ctx.font = '35px Arial, sans-serif';
+ctx.fillText('PASS', 5, 35, 200);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.draw.fill.maxWidth.large.png b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.draw.fill.maxWidth.large.png
new file mode 100644
index 0000000000..70d7b046cb
Binary files /dev/null and b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.draw.fill.maxWidth.large.png differ
diff --git a/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.draw.fill.maxWidth.negative.html b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.draw.fill.maxWidth.negative.html
new file mode 100644
index 0000000000..9d06556736
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.draw.fill.maxWidth.negative.html
@@ -0,0 +1,32 @@
+
+
+OffscreenCanvas test: 2d.text.draw.fill.maxWidth.negative
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.text.draw.fill.maxWidth.negative
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              fillText handles maxWidth correctly
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.draw.fill.maxWidth.negative.worker.js b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.draw.fill.maxWidth.negative.worker.js
new file mode 100644
index 0000000000..bf852bc54d
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.draw.fill.maxWidth.negative.worker.js
@@ -0,0 +1,28 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.text.draw.fill.maxWidth.negative
+// Description:fillText handles maxWidth correctly
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("fillText handles maxWidth correctly");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+ctx.fillStyle = '#0f0';
+ctx.fillRect(0, 0, 100, 50);
+ctx.fillStyle = '#f00';
+ctx.font = '35px Arial, sans-serif';
+ctx.fillText('fail fail fail fail fail', 5, 35, -1);
+_assertGreen(ctx, 100, 50);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.draw.fill.maxWidth.small.html b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.draw.fill.maxWidth.small.html
new file mode 100644
index 0000000000..37c137eab5
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.draw.fill.maxWidth.small.html
@@ -0,0 +1,32 @@
+
+
+OffscreenCanvas test: 2d.text.draw.fill.maxWidth.small
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.text.draw.fill.maxWidth.small
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              fillText handles maxWidth correctly
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.draw.fill.maxWidth.small.worker.js b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.draw.fill.maxWidth.small.worker.js
new file mode 100644
index 0000000000..44cf210e1e
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.draw.fill.maxWidth.small.worker.js
@@ -0,0 +1,28 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.text.draw.fill.maxWidth.small
+// Description:fillText handles maxWidth correctly
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("fillText handles maxWidth correctly");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+ctx.fillStyle = '#0f0';
+ctx.fillRect(0, 0, 100, 50);
+ctx.fillStyle = '#f00';
+ctx.font = '35px Arial, sans-serif';
+ctx.fillText('fail fail fail fail fail', -100, 35, 90);
+_assertGreen(ctx, 100, 50);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.draw.fill.maxWidth.zero.html b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.draw.fill.maxWidth.zero.html
new file mode 100644
index 0000000000..c5bec91f9d
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.draw.fill.maxWidth.zero.html
@@ -0,0 +1,33 @@
+
+
+OffscreenCanvas test: 2d.text.draw.fill.maxWidth.zero
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.text.draw.fill.maxWidth.zero
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              fillText handles maxWidth correctly
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.draw.fill.maxWidth.zero.worker.js b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.draw.fill.maxWidth.zero.worker.js
new file mode 100644
index 0000000000..6701f5b8dc
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.draw.fill.maxWidth.zero.worker.js
@@ -0,0 +1,29 @@
+// META: timeout=long
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.text.draw.fill.maxWidth.zero
+// Description:fillText handles maxWidth correctly
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("fillText handles maxWidth correctly");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+ctx.fillStyle = '#0f0';
+ctx.fillRect(0, 0, 100, 50);
+ctx.fillStyle = '#f00';
+ctx.font = '35px Arial, sans-serif';
+ctx.fillText('fail fail fail fail fail', 5, 35, 0);
+_assertGreen(ctx, 100, 50);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.draw.fill.rtl-manual.html b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.draw.fill.rtl-manual.html
new file mode 100644
index 0000000000..7363d734cc
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.draw.fill.rtl-manual.html
@@ -0,0 +1,32 @@
+
+
+OffscreenCanvas test: 2d.text.draw.fill.rtl
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.text.draw.fill.rtl
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              fillText respects Right-To-Left Override characters
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.draw.fill.rtl-manual.worker.js b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.draw.fill.rtl-manual.worker.js
new file mode 100644
index 0000000000..f52a0cc617
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.draw.fill.rtl-manual.worker.js
@@ -0,0 +1,28 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.text.draw.fill.rtl
+// Description:fillText respects Right-To-Left Override characters
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("fillText respects Right-To-Left Override characters");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+ctx.fillStyle = '#000';
+ctx.fillRect(0, 0, 100, 50);
+ctx.fillStyle = '#0f0';
+ctx.strokeStyle = '#f00';
+ctx.font = '35px Arial, sans-serif';
+ctx.fillText('\u202eFAIL \xa0 \xa0 SSAP', 5, 35);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.draw.fill.rtl.png b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.draw.fill.rtl.png
new file mode 100644
index 0000000000..70d7b046cb
Binary files /dev/null and b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.draw.fill.rtl.png differ
diff --git a/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.draw.fill.unaffected.html b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.draw.fill.unaffected.html
new file mode 100644
index 0000000000..e620ae1a18
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.draw.fill.unaffected.html
@@ -0,0 +1,42 @@
+
+
+OffscreenCanvas test: 2d.text.draw.fill.unaffected
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.text.draw.fill.unaffected
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              fillText does not start a new path or subpath
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.draw.fill.unaffected.worker.js b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.draw.fill.unaffected.worker.js
new file mode 100644
index 0000000000..9640bad6c9
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.draw.fill.unaffected.worker.js
@@ -0,0 +1,38 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.text.draw.fill.unaffected
+// Description:fillText does not start a new path or subpath
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("fillText does not start a new path or subpath");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+ctx.fillStyle = '#f00';
+ctx.fillRect(0, 0, 100, 50);
+
+ctx.moveTo(0, 0);
+ctx.lineTo(100, 0);
+
+ctx.font = '35px Arial, sans-serif';
+ctx.fillText('FAIL', 5, 35);
+
+ctx.lineTo(100, 50);
+ctx.lineTo(0, 50);
+ctx.fillStyle = '#0f0';
+ctx.fill();
+
+_assertPixel(canvas, 50,25, 0,255,0,255);
+_assertPixel(canvas, 5,45, 0,255,0,255);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.draw.fontface.html b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.draw.fontface.html
new file mode 100644
index 0000000000..d2c65e8bb2
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.draw.fontface.html
@@ -0,0 +1,40 @@
+
+
+OffscreenCanvas test: 2d.text.draw.fontface
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.text.draw.fontface
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.draw.fontface.notinpage.html b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.draw.fontface.notinpage.html
new file mode 100644
index 0000000000..f390700ea0
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.draw.fontface.notinpage.html
@@ -0,0 +1,40 @@
+
+
+OffscreenCanvas test: 2d.text.draw.fontface.notinpage
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.text.draw.fontface.notinpage
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              @font-face fonts should work even if they are not used in the page
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.draw.fontface.notinpage.worker.js b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.draw.fontface.notinpage.worker.js
new file mode 100644
index 0000000000..8efab418a8
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.draw.fontface.notinpage.worker.js
@@ -0,0 +1,36 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.text.draw.fontface.notinpage
+// Description:@font-face fonts should work even if they are not used in the page
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("@font-face fonts should work even if they are not used in the page");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+var f = new FontFace("CanvasTest", "url('/fonts/CanvasTest.ttf')");
+let fonts = (self.fonts ? self.fonts : document.fonts);
+f.load();
+fonts.add(f);
+fonts.ready.then(function() {
+    ctx.font = '67px CanvasTest';
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.fillStyle = '#0f0';
+    ctx.fillText('AA', 0, 50);
+    _assertPixelApprox(canvas, 5,5, 0,255,0,255, 2);
+    _assertPixelApprox(canvas, 95,5, 0,255,0,255, 2);
+    _assertPixelApprox(canvas, 25,25, 0,255,0,255, 2);
+    _assertPixelApprox(canvas, 75,25, 0,255,0,255, 2);
+  }).then(t_pass, t_fail);
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.draw.fontface.repeat.html b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.draw.fontface.repeat.html
new file mode 100644
index 0000000000..3766ab6989
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.draw.fontface.repeat.html
@@ -0,0 +1,41 @@
+
+
+OffscreenCanvas test: 2d.text.draw.fontface.repeat
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.text.draw.fontface.repeat
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Draw with the font immediately, then wait a bit until and draw again. (This crashes some version of WebKit.)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.draw.fontface.repeat.worker.js b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.draw.fontface.repeat.worker.js
new file mode 100644
index 0000000000..756e844709
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.draw.fontface.repeat.worker.js
@@ -0,0 +1,37 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.text.draw.fontface.repeat
+// Description:Draw with the font immediately, then wait a bit until and draw again. (This crashes some version of WebKit.)
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("Draw with the font immediately, then wait a bit until and draw again. (This crashes some version of WebKit.)");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+var f = new FontFace("CanvasTest", "url('/fonts/CanvasTest.ttf')");
+let fonts = (self.fonts ? self.fonts : document.fonts);
+f.load();
+fonts.add(f);
+fonts.ready.then(function() {
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.font = '67px CanvasTest';
+    ctx.fillStyle = '#0f0';
+    ctx.fillText('AA', 0, 50);
+    ctx.fillText('AA', 0, 50);
+    _assertPixelApprox(canvas, 5,5, 0,255,0,255, 2);
+    _assertPixelApprox(canvas, 95,5, 0,255,0,255, 2);
+    _assertPixelApprox(canvas, 25,25, 0,255,0,255, 2);
+    _assertPixelApprox(canvas, 75,25, 0,255,0,255, 2);
+  }).then(t_pass, t_fail);
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.draw.fontface.worker.js b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.draw.fontface.worker.js
new file mode 100644
index 0000000000..45f18317b0
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.draw.fontface.worker.js
@@ -0,0 +1,36 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.text.draw.fontface
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+var f = new FontFace("CanvasTest", "url('/fonts/CanvasTest.ttf')");
+let fonts = (self.fonts ? self.fonts : document.fonts);
+f.load();
+fonts.add(f);
+fonts.ready.then(function() {
+    ctx.font = '67px CanvasTest';
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.fillStyle = '#0f0';
+    ctx.fillText('AA', 0, 50);
+    _assertPixelApprox(canvas, 5,5, 0,255,0,255, 2);
+    _assertPixelApprox(canvas, 95,5, 0,255,0,255, 2);
+    _assertPixelApprox(canvas, 25,25, 0,255,0,255, 2);
+    _assertPixelApprox(canvas, 75,25, 0,255,0,255, 2);
+  }).then(t_pass, t_fail);
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.draw.kern.consistent-manual.html b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.draw.kern.consistent-manual.html
new file mode 100644
index 0000000000..e8ee39c655
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.draw.kern.consistent-manual.html
@@ -0,0 +1,36 @@
+
+
+OffscreenCanvas test: 2d.text.draw.kern.consistent
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.text.draw.kern.consistent
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Stroked and filled text should have exactly the same kerning so it overlaps
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.draw.kern.consistent-manual.worker.js b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.draw.kern.consistent-manual.worker.js
new file mode 100644
index 0000000000..464cab3ea5
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.draw.kern.consistent-manual.worker.js
@@ -0,0 +1,32 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.text.draw.kern.consistent
+// Description:Stroked and filled text should have exactly the same kerning so it overlaps
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("Stroked and filled text should have exactly the same kerning so it overlaps");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+ctx.fillStyle = '#0f0';
+ctx.fillRect(0, 0, 100, 50);
+ctx.fillStyle = '#f00';
+ctx.strokeStyle = '#0f0';
+ctx.lineWidth = 3;
+ctx.font = '20px Arial, sans-serif';
+ctx.fillText('VAVAVAVAVAVAVA', -50, 25);
+ctx.fillText('ToToToToToToTo', -50, 45);
+ctx.strokeText('VAVAVAVAVAVAVA', -50, 25);
+ctx.strokeText('ToToToToToToTo', -50, 45);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.draw.space.basic.html b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.draw.space.basic.html
new file mode 100644
index 0000000000..4bc03bb4ad
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.draw.space.basic.html
@@ -0,0 +1,38 @@
+
+
+OffscreenCanvas test: 2d.text.draw.space.basic
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.text.draw.space.basic
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              U+0020 is rendered the correct size (1em wide)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.draw.space.basic.worker.js b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.draw.space.basic.worker.js
new file mode 100644
index 0000000000..39c00846e9
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.draw.space.basic.worker.js
@@ -0,0 +1,34 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.text.draw.space.basic
+// Description:U+0020 is rendered the correct size (1em wide)
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("U+0020 is rendered the correct size (1em wide)");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+var f = new FontFace("CanvasTest", "url('/fonts/CanvasTest.ttf')");
+let fonts = (self.fonts ? self.fonts : document.fonts);
+f.load();
+fonts.add(f);
+fonts.ready.then(function() {
+    ctx.font = '50px CanvasTest';
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.fillStyle = '#0f0';
+    ctx.fillText('E EE', -100, 37.5);
+    _assertPixelApprox(canvas, 25,25, 0,255,0,255, 2);
+    _assertPixelApprox(canvas, 75,25, 0,255,0,255, 2);
+  }).then(t_pass, t_fail);
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.draw.space.collapse.end.html b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.draw.space.collapse.end.html
new file mode 100644
index 0000000000..58fb292e13
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.draw.space.collapse.end.html
@@ -0,0 +1,39 @@
+
+
+OffscreenCanvas test: 2d.text.draw.space.collapse.end
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.text.draw.space.collapse.end
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Space characters at the end of a line are collapsed (per CSS)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.draw.space.collapse.end.worker.js b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.draw.space.collapse.end.worker.js
new file mode 100644
index 0000000000..81f85baff0
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.draw.space.collapse.end.worker.js
@@ -0,0 +1,35 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.text.draw.space.collapse.end
+// Description:Space characters at the end of a line are collapsed (per CSS)
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("Space characters at the end of a line are collapsed (per CSS)");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+var f = new FontFace("CanvasTest", "url('/fonts/CanvasTest.ttf')");
+let fonts = (self.fonts ? self.fonts : document.fonts);
+f.load();
+fonts.add(f);
+fonts.ready.then(function() {
+    ctx.font = '50px CanvasTest';
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.fillStyle = '#0f0';
+    ctx.textAlign = 'right';
+    ctx.fillText('EE ', 100, 37.5);
+    _assertPixelApprox(canvas, 25,25, 0,255,0,255, 2);
+    _assertPixelApprox(canvas, 75,25, 0,255,0,255, 2);
+  }).then(t_pass, t_fail);
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.draw.space.collapse.nonspace.html b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.draw.space.collapse.nonspace.html
new file mode 100644
index 0000000000..f018dc1465
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.draw.space.collapse.nonspace.html
@@ -0,0 +1,38 @@
+
+
+OffscreenCanvas test: 2d.text.draw.space.collapse.nonspace
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.text.draw.space.collapse.nonspace
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Non-space characters are not converted to U+0020 and collapsed
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.draw.space.collapse.nonspace.worker.js b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.draw.space.collapse.nonspace.worker.js
new file mode 100644
index 0000000000..cbc9803487
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.draw.space.collapse.nonspace.worker.js
@@ -0,0 +1,34 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.text.draw.space.collapse.nonspace
+// Description:Non-space characters are not converted to U+0020 and collapsed
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("Non-space characters are not converted to U+0020 and collapsed");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+var f = new FontFace("CanvasTest", "url('/fonts/CanvasTest.ttf')");
+let fonts = (self.fonts ? self.fonts : document.fonts);
+f.load();
+fonts.add(f);
+fonts.ready.then(function() {
+    ctx.font = '50px CanvasTest';
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.fillStyle = '#0f0';
+    ctx.fillText('E\x0b EE', -150, 37.5);
+    _assertPixelApprox(canvas, 25,25, 0,255,0,255, 2);
+    _assertPixelApprox(canvas, 75,25, 0,255,0,255, 2);
+  }).then(t_pass, t_fail);
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.draw.space.collapse.other.html b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.draw.space.collapse.other.html
new file mode 100644
index 0000000000..0a6bb09c07
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.draw.space.collapse.other.html
@@ -0,0 +1,38 @@
+
+
+OffscreenCanvas test: 2d.text.draw.space.collapse.other
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.text.draw.space.collapse.other
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Space characters are converted to U+0020, and collapsed (per CSS)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.draw.space.collapse.other.worker.js b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.draw.space.collapse.other.worker.js
new file mode 100644
index 0000000000..e13b87a531
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.draw.space.collapse.other.worker.js
@@ -0,0 +1,34 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.text.draw.space.collapse.other
+// Description:Space characters are converted to U+0020, and collapsed (per CSS)
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("Space characters are converted to U+0020, and collapsed (per CSS)");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+var f = new FontFace("CanvasTest", "url('/fonts/CanvasTest.ttf')");
+let fonts = (self.fonts ? self.fonts : document.fonts);
+f.load();
+fonts.add(f);
+fonts.ready.then(function() {
+    ctx.font = '50px CanvasTest';
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.fillStyle = '#0f0';
+    ctx.fillText('E \x09\x0a\x0c\x0d  \x09\x0a\x0c\x0dEE', -100, 37.5);
+    _assertPixelApprox(canvas, 25,25, 0,255,0,255, 2);
+    _assertPixelApprox(canvas, 75,25, 0,255,0,255, 2);
+  }).then(t_pass, t_fail);
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.draw.space.collapse.space.html b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.draw.space.collapse.space.html
new file mode 100644
index 0000000000..3308cc7598
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.draw.space.collapse.space.html
@@ -0,0 +1,38 @@
+
+
+OffscreenCanvas test: 2d.text.draw.space.collapse.space
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.text.draw.space.collapse.space
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Space characters are converted to U+0020, and collapsed (per CSS)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.draw.space.collapse.space.worker.js b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.draw.space.collapse.space.worker.js
new file mode 100644
index 0000000000..4ea78a2466
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.draw.space.collapse.space.worker.js
@@ -0,0 +1,34 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.text.draw.space.collapse.space
+// Description:Space characters are converted to U+0020, and collapsed (per CSS)
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("Space characters are converted to U+0020, and collapsed (per CSS)");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+var f = new FontFace("CanvasTest", "url('/fonts/CanvasTest.ttf')");
+let fonts = (self.fonts ? self.fonts : document.fonts);
+f.load();
+fonts.add(f);
+fonts.ready.then(function() {
+    ctx.font = '50px CanvasTest';
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.fillStyle = '#0f0';
+    ctx.fillText('E  EE', -100, 37.5);
+    _assertPixelApprox(canvas, 25,25, 0,255,0,255, 2);
+    _assertPixelApprox(canvas, 75,25, 0,255,0,255, 2);
+  }).then(t_pass, t_fail);
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.draw.space.collapse.start.html b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.draw.space.collapse.start.html
new file mode 100644
index 0000000000..94b3f9ff0b
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.draw.space.collapse.start.html
@@ -0,0 +1,38 @@
+
+
+OffscreenCanvas test: 2d.text.draw.space.collapse.start
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.text.draw.space.collapse.start
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Space characters at the start of a line are collapsed (per CSS)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.draw.space.collapse.start.worker.js b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.draw.space.collapse.start.worker.js
new file mode 100644
index 0000000000..20bd10ae57
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.draw.space.collapse.start.worker.js
@@ -0,0 +1,34 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.text.draw.space.collapse.start
+// Description:Space characters at the start of a line are collapsed (per CSS)
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("Space characters at the start of a line are collapsed (per CSS)");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+var f = new FontFace("CanvasTest", "url('/fonts/CanvasTest.ttf')");
+let fonts = (self.fonts ? self.fonts : document.fonts);
+f.load();
+fonts.add(f);
+fonts.ready.then(function() {
+    ctx.font = '50px CanvasTest';
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.fillStyle = '#0f0';
+    ctx.fillText(' EE', 0, 37.5);
+    _assertPixelApprox(canvas, 25,25, 0,255,0,255, 2);
+    _assertPixelApprox(canvas, 75,25, 0,255,0,255, 2);
+  }).then(t_pass, t_fail);
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.draw.stroke.basic-manual.html b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.draw.stroke.basic-manual.html
new file mode 100644
index 0000000000..5aee6afc0d
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.draw.stroke.basic-manual.html
@@ -0,0 +1,33 @@
+
+
+OffscreenCanvas test: 2d.text.draw.stroke.basic
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.text.draw.stroke.basic
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              strokeText draws stroked text
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.draw.stroke.basic-manual.worker.js b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.draw.stroke.basic-manual.worker.js
new file mode 100644
index 0000000000..8806e011ea
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.draw.stroke.basic-manual.worker.js
@@ -0,0 +1,29 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.text.draw.stroke.basic
+// Description:strokeText draws stroked text
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("strokeText draws stroked text");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+ctx.fillStyle = '#000';
+ctx.fillRect(0, 0, 100, 50);
+ctx.strokeStyle = '#0f0';
+ctx.fillStyle = '#f00';
+ctx.lineWidth = 1;
+ctx.font = '35px Arial, sans-serif';
+ctx.strokeText('PASS', 5, 35);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.draw.stroke.basic.png b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.draw.stroke.basic.png
new file mode 100644
index 0000000000..fb3b5b830d
Binary files /dev/null and b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.draw.stroke.basic.png differ
diff --git a/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.draw.stroke.unaffected.html b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.draw.stroke.unaffected.html
new file mode 100644
index 0000000000..7cad996cc0
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.draw.stroke.unaffected.html
@@ -0,0 +1,43 @@
+
+
+OffscreenCanvas test: 2d.text.draw.stroke.unaffected
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.text.draw.stroke.unaffected
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              strokeText does not start a new path or subpath
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.draw.stroke.unaffected.worker.js b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.draw.stroke.unaffected.worker.js
new file mode 100644
index 0000000000..7ce3b1adc7
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.draw.stroke.unaffected.worker.js
@@ -0,0 +1,39 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.text.draw.stroke.unaffected
+// Description:strokeText does not start a new path or subpath
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("strokeText does not start a new path or subpath");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+ctx.fillStyle = '#f00';
+ctx.fillRect(0, 0, 100, 50);
+
+ctx.moveTo(0, 0);
+ctx.lineTo(100, 0);
+
+ctx.font = '35px Arial, sans-serif';
+ctx.strokeStyle = '#f00';
+ctx.strokeText('FAIL', 5, 35);
+
+ctx.lineTo(100, 50);
+ctx.lineTo(0, 50);
+ctx.fillStyle = '#0f0';
+ctx.fill();
+
+_assertPixel(canvas, 50,25, 0,255,0,255);
+_assertPixel(canvas, 5,45, 0,255,0,255);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.drawing.style.fontKerning.html b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.drawing.style.fontKerning.html
new file mode 100644
index 0000000000..30e12f31bb
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.drawing.style.fontKerning.html
@@ -0,0 +1,34 @@
+
+
+OffscreenCanvas test: 2d.text.drawing.style.fontKerning
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.text.drawing.style.fontKerning
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Testing basic functionalities of fontKerning for canvas
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.drawing.style.fontKerning.with.uppercase.html b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.drawing.style.fontKerning.with.uppercase.html
new file mode 100644
index 0000000000..a9a5ae23f5
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.drawing.style.fontKerning.with.uppercase.html
@@ -0,0 +1,56 @@
+
+
+OffscreenCanvas test: 2d.text.drawing.style.fontKerning.with.uppercase
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.text.drawing.style.fontKerning.with.uppercase
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Testing basic functionalities of fontKerning for canvas
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.drawing.style.fontKerning.with.uppercase.worker.js b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.drawing.style.fontKerning.with.uppercase.worker.js
new file mode 100644
index 0000000000..a8837374e0
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.drawing.style.fontKerning.with.uppercase.worker.js
@@ -0,0 +1,52 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.text.drawing.style.fontKerning.with.uppercase
+// Description:Testing basic functionalities of fontKerning for canvas
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("Testing basic functionalities of fontKerning for canvas");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+_assertSame(ctx.fontKerning, "auto", "ctx.fontKerning", "\"auto\"");
+ctx.fontKerning = "Normal";
+_assertSame(ctx.fontKerning, "normal", "ctx.fontKerning", "\"normal\"");
+ctx.fontKerning = "auto";
+ctx.fontKerning = "normal";
+_assertSame(ctx.fontKerning, "normal", "ctx.fontKerning", "\"normal\"");
+ctx.fontKerning = "auto";
+ctx.fontKerning = "noRmal";
+_assertSame(ctx.fontKerning, "normal", "ctx.fontKerning", "\"normal\"");
+ctx.fontKerning = "auto";
+ctx.fontKerning = "NoRMal";
+_assertSame(ctx.fontKerning, "normal", "ctx.fontKerning", "\"normal\"");
+ctx.fontKerning = "auto";
+ctx.fontKerning = "NORMAL";
+_assertSame(ctx.fontKerning, "normal", "ctx.fontKerning", "\"normal\"");
+
+ctx.fontKerning = "None";
+_assertSame(ctx.fontKerning, "none", "ctx.fontKerning", "\"none\"");
+ctx.fontKerning = "auto";
+ctx.fontKerning = "none";
+_assertSame(ctx.fontKerning, "none", "ctx.fontKerning", "\"none\"");
+ctx.fontKerning = "auto";
+ctx.fontKerning = "nOne";
+_assertSame(ctx.fontKerning, "none", "ctx.fontKerning", "\"none\"");
+ctx.fontKerning = "auto";
+ctx.fontKerning = "nonE";
+_assertSame(ctx.fontKerning, "none", "ctx.fontKerning", "\"none\"");
+ctx.fontKerning = "auto";
+ctx.fontKerning = "NONE";
+_assertSame(ctx.fontKerning, "none", "ctx.fontKerning", "\"none\"");
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.drawing.style.fontKerning.worker.js b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.drawing.style.fontKerning.worker.js
new file mode 100644
index 0000000000..9478eece85
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.drawing.style.fontKerning.worker.js
@@ -0,0 +1,30 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.text.drawing.style.fontKerning
+// Description:Testing basic functionalities of fontKerning for canvas
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("Testing basic functionalities of fontKerning for canvas");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+_assertSame(ctx.fontKerning, "auto", "ctx.fontKerning", "\"auto\"");
+ctx.fontKerning = "normal";
+_assertSame(ctx.fontKerning, "normal", "ctx.fontKerning", "\"normal\"");
+width_normal = ctx.measureText("TAWATAVA").width;
+ctx.fontKerning = "none";
+_assertSame(ctx.fontKerning, "none", "ctx.fontKerning", "\"none\"");
+width_none = ctx.measureText("TAWATAVA").width;
+_assert(width_normal < width_none, "width_normal < width_none");
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.drawing.style.fontVariant.settings.html b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.drawing.style.fontVariant.settings.html
new file mode 100644
index 0000000000..08c48f1bcd
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.drawing.style.fontVariant.settings.html
@@ -0,0 +1,75 @@
+
+
+OffscreenCanvas test: 2d.text.drawing.style.fontVariant.settings
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.text.drawing.style.fontVariant.settings
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Testing basic functionalities of fontKerning for canvas
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.drawing.style.fontVariant.settings.worker.js b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.drawing.style.fontVariant.settings.worker.js
new file mode 100644
index 0000000000..d4e9307bef
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.drawing.style.fontVariant.settings.worker.js
@@ -0,0 +1,71 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.text.drawing.style.fontVariant.settings
+// Description:Testing basic functionalities of fontKerning for canvas
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("Testing basic functionalities of fontKerning for canvas");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+// Setting fontVariantCaps with lower cases
+_assertSame(ctx.fontVariantCaps, "normal", "ctx.fontVariantCaps", "\"normal\"");
+
+ctx.fontVariantCaps = "normal";
+_assertSame(ctx.fontVariantCaps, "normal", "ctx.fontVariantCaps", "\"normal\"");
+
+ctx.fontVariantCaps = "small-caps";
+_assertSame(ctx.fontVariantCaps, "small-caps", "ctx.fontVariantCaps", "\"small-caps\"");
+
+ctx.fontVariantCaps = "all-small-caps";
+_assertSame(ctx.fontVariantCaps, "all-small-caps", "ctx.fontVariantCaps", "\"all-small-caps\"");
+
+ctx.fontVariantCaps = "petite-caps";
+_assertSame(ctx.fontVariantCaps, "petite-caps", "ctx.fontVariantCaps", "\"petite-caps\"");
+
+ctx.fontVariantCaps = "all-petite-caps";
+_assertSame(ctx.fontVariantCaps, "all-petite-caps", "ctx.fontVariantCaps", "\"all-petite-caps\"");
+
+ctx.fontVariantCaps = "unicase";
+_assertSame(ctx.fontVariantCaps, "unicase", "ctx.fontVariantCaps", "\"unicase\"");
+
+ctx.fontVariantCaps = "titling-caps";
+_assertSame(ctx.fontVariantCaps, "titling-caps", "ctx.fontVariantCaps", "\"titling-caps\"");
+
+// Setting fontVariantCaps with lower cases and upper cases word.
+ctx.fontVariantCaps = "nORmal";
+_assertSame(ctx.fontVariantCaps, "normal", "ctx.fontVariantCaps", "\"normal\"");
+
+ctx.fontVariantCaps = "smaLL-caps";
+_assertSame(ctx.fontVariantCaps, "small-caps", "ctx.fontVariantCaps", "\"small-caps\"");
+
+ctx.fontVariantCaps = "all-small-CAPS";
+_assertSame(ctx.fontVariantCaps, "all-small-caps", "ctx.fontVariantCaps", "\"all-small-caps\"");
+
+ctx.fontVariantCaps = "pEtitE-caps";
+_assertSame(ctx.fontVariantCaps, "petite-caps", "ctx.fontVariantCaps", "\"petite-caps\"");
+
+ctx.fontVariantCaps = "All-Petite-Caps";
+_assertSame(ctx.fontVariantCaps, "all-petite-caps", "ctx.fontVariantCaps", "\"all-petite-caps\"");
+
+ctx.fontVariantCaps = "uNIcase";
+_assertSame(ctx.fontVariantCaps, "unicase", "ctx.fontVariantCaps", "\"unicase\"");
+
+ctx.fontVariantCaps = "titling-CAPS";
+_assertSame(ctx.fontVariantCaps, "titling-caps", "ctx.fontVariantCaps", "\"titling-caps\"");
+
+// Setting fontVariantCaps with non-existing font variant.
+ctx.fontVariantCaps = "abcd";
+_assertSame(ctx.fontVariantCaps, "titling-caps", "ctx.fontVariantCaps", "\"titling-caps\"");
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.drawing.style.invalid.spacing.html b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.drawing.style.invalid.spacing.html
new file mode 100644
index 0000000000..5030055567
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.drawing.style.invalid.spacing.html
@@ -0,0 +1,44 @@
+
+
+OffscreenCanvas test: 2d.text.drawing.style.invalid.spacing
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.text.drawing.style.invalid.spacing
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Testing letter spacing and word spacing with invalid units
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.drawing.style.invalid.spacing.worker.js b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.drawing.style.invalid.spacing.worker.js
new file mode 100644
index 0000000000..e4b090cc76
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.drawing.style.invalid.spacing.worker.js
@@ -0,0 +1,40 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.text.drawing.style.invalid.spacing
+// Description:Testing letter spacing and word spacing with invalid units
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("Testing letter spacing and word spacing with invalid units");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+_assertSame(ctx.letterSpacing, '0px', "ctx.letterSpacing", "'0px'");
+_assertSame(ctx.wordSpacing, '0px', "ctx.wordSpacing", "'0px'");
+
+function test_word_spacing(value) {
+  ctx.wordSpacing = value;
+  ctx.letterSpacing = value;
+  _assertSame(ctx.wordSpacing, '0px', "ctx.wordSpacing", "'0px'");
+  _assertSame(ctx.letterSpacing, '0px', "ctx.letterSpacing", "'0px'");
+}
+test_word_spacing('0s');
+test_word_spacing('1min');
+test_word_spacing('1deg');
+test_word_spacing('1pp');
+test_word_spacing('initial');
+test_word_spacing('inherit');
+test_word_spacing('normal');
+test_word_spacing('none');
+
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.drawing.style.letterSpacing.change.font.html b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.drawing.style.letterSpacing.change.font.html
new file mode 100644
index 0000000000..ff84f4541b
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.drawing.style.letterSpacing.change.font.html
@@ -0,0 +1,46 @@
+
+
+OffscreenCanvas test: 2d.text.drawing.style.letterSpacing.change.font
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.text.drawing.style.letterSpacing.change.font
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Set letter spacing and word spacing to font dependent value and verify it works after font change.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.drawing.style.letterSpacing.change.font.worker.js b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.drawing.style.letterSpacing.change.font.worker.js
new file mode 100644
index 0000000000..5a6bf6614d
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.drawing.style.letterSpacing.change.font.worker.js
@@ -0,0 +1,42 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.text.drawing.style.letterSpacing.change.font
+// Description:Set letter spacing and word spacing to font dependent value and verify it works after font change.
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("Set letter spacing and word spacing to font dependent value and verify it works after font change.");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+_assertSame(ctx.letterSpacing, '0px', "ctx.letterSpacing", "'0px'");
+_assertSame(ctx.wordSpacing, '0px', "ctx.wordSpacing", "'0px'");
+// Get the width for 'Hello World' at default size, 10px.
+var width_normal = ctx.measureText('Hello World').width;
+
+ctx.letterSpacing = '1em';
+_assertSame(ctx.letterSpacing, '1em', "ctx.letterSpacing", "'1em'");
+// 1em = 10px. Add 10px after each letter in "Hello World",
+// makes it 110px longer.
+var width_with_spacing = ctx.measureText('Hello World').width;
+_assertSame(width_with_spacing, width_normal + 110, "width_with_spacing", "width_normal + 110");
+
+// Changing font to 20px. Without resetting the spacing, 1em letterSpacing
+// is now 20px, so it's suppose to be 220px longer without any letterSpacing set.
+ctx.font = '20px serif';
+width_with_spacing = ctx.measureText('Hello World').width;
+// Now calculate the reference spacing for "Hello World" with no spacing.
+ctx.letterSpacing = '0em';
+width_normal = ctx.measureText('Hello World').width;
+_assertSame(width_with_spacing, width_normal + 220, "width_with_spacing", "width_normal + 220");
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.drawing.style.letterSpacing.measure.absolute.html b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.drawing.style.letterSpacing.measure.absolute.html
new file mode 100644
index 0000000000..5482c36b37
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.drawing.style.letterSpacing.measure.absolute.html
@@ -0,0 +1,53 @@
+
+
+OffscreenCanvas test: 2d.text.drawing.style.letterSpacing.measure.absolute
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.text.drawing.style.letterSpacing.measure.absolute
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Testing letter spacing with absolute length
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.drawing.style.letterSpacing.measure.absolute.worker.js b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.drawing.style.letterSpacing.measure.absolute.worker.js
new file mode 100644
index 0000000000..22cab4cccd
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.drawing.style.letterSpacing.measure.absolute.worker.js
@@ -0,0 +1,49 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.text.drawing.style.letterSpacing.measure.absolute
+// Description:Testing letter spacing with absolute length
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("Testing letter spacing with absolute length");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+_assertSame(ctx.letterSpacing, '0px', "ctx.letterSpacing", "'0px'");
+_assertSame(ctx.wordSpacing, '0px', "ctx.wordSpacing", "'0px'");
+var width_normal = ctx.measureText('Hello World').width;
+
+function test_letter_spacing(value, difference_spacing, epsilon) {
+  ctx.letterSpacing = value;
+  _assertSame(ctx.letterSpacing, value, "ctx.letterSpacing", "value");
+  _assertSame(ctx.wordSpacing, '0px', "ctx.wordSpacing", "'0px'");
+  width_with_letter_spacing = ctx.measureText('Hello World').width;
+  assert_approx_equals(width_with_letter_spacing, width_normal + difference_spacing, epsilon, "letter spacing doesn't work.");
+}
+
+// The first value is the letter Spacing to be set, the second value the
+// change in length of string 'Hello World', note that there are 11 letters
+// in 'hello world', so the length difference is always letterSpacing * 11.
+// and the third value is the acceptable differencee for the length change,
+// note that unit such as 1cm/1mm doesn't map to an exact pixel value.
+test_cases = [['3px', 33, 0.1],
+              ['5px', 55, 0.1],
+              ['-2px', -22, 0.1],
+              ['1in', 1056, 0.1],
+              ['-0.1cm', -41.65, 0.2],
+              ['-0.6mm', -24,95, 0.2]]
+
+for (const test_case of test_cases) {
+  test_letter_spacing(test_case[0], test_case[1], test_case[2]);
+}
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.drawing.style.letterSpacing.measure.relative.html b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.drawing.style.letterSpacing.measure.relative.html
new file mode 100644
index 0000000000..fa5d2bce75
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.drawing.style.letterSpacing.measure.relative.html
@@ -0,0 +1,51 @@
+
+
+OffscreenCanvas test: 2d.text.drawing.style.letterSpacing.measure.relative
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.text.drawing.style.letterSpacing.measure.relative
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Testing letter spacing with font-relative length
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.drawing.style.letterSpacing.measure.relative.worker.js b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.drawing.style.letterSpacing.measure.relative.worker.js
new file mode 100644
index 0000000000..59d17ef82c
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.drawing.style.letterSpacing.measure.relative.worker.js
@@ -0,0 +1,47 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.text.drawing.style.letterSpacing.measure.relative
+// Description:Testing letter spacing with font-relative length
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("Testing letter spacing with font-relative length");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+_assertSame(ctx.letterSpacing, '0px', "ctx.letterSpacing", "'0px'");
+_assertSame(ctx.wordSpacing, '0px', "ctx.wordSpacing", "'0px'");
+ctx.font = "10px monospace";
+var width_normal = ctx.measureText('Hello World').width;
+var ch_width = width_normal / 11;
+
+function test_letter_spacing(value, difference_spacing, epsilon) {
+  ctx.letterSpacing = value;
+  _assertSame(ctx.letterSpacing, value, "ctx.letterSpacing", "value");
+  _assertSame(ctx.wordSpacing, '0px', "ctx.wordSpacing", "'0px'");
+  width_with_letter_spacing = ctx.measureText('Hello World').width;
+  assert_approx_equals(width_with_letter_spacing, width_normal + difference_spacing, epsilon, "letter spacing doesn't work.");
+}
+
+// The first value is the letter Spacing to be set, the second value the
+// change in length of string 'Hello World', note that there are 11 letters
+// in 'hello world', so the length difference is always letterSpacing * 11.
+// and the third value is the acceptable differencee for the length change.
+test_cases = [['1em', 110, 0.1],
+              ['-0.1em', -11, 0.1],
+              ['1ch', 11 * ch_width, 0.1]]
+
+for (const test_case of test_cases) {
+  test_letter_spacing(test_case[0], test_case[1], test_case[2]);
+}
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.drawing.style.measure.direction.html b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.drawing.style.measure.direction.html
new file mode 100644
index 0000000000..04774a9d0f
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.drawing.style.measure.direction.html
@@ -0,0 +1,33 @@
+
+
+OffscreenCanvas test: 2d.text.drawing.style.measure.direction
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.text.drawing.style.measure.direction
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Measurement should follow text direction
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.drawing.style.measure.direction.worker.js b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.drawing.style.measure.direction.worker.js
new file mode 100644
index 0000000000..8f5585682b
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.drawing.style.measure.direction.worker.js
@@ -0,0 +1,29 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.text.drawing.style.measure.direction
+// Description:Measurement should follow text direction
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("Measurement should follow text direction");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+ctx.direction = "ltr";
+metrics = ctx.measureText('hello');
+_assert(metrics.actualBoundingBoxLeft < metrics.actualBoundingBoxRight, "metrics.actualBoundingBoxLeft < metrics.actualBoundingBoxRight");
+
+ctx.direction = "rtl";
+metrics = ctx.measureText('hello');
+_assert(metrics.actualBoundingBoxLeft > metrics.actualBoundingBoxRight, "metrics.actualBoundingBoxLeft > metrics.actualBoundingBoxRight");
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.drawing.style.measure.rtl.text.html b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.drawing.style.measure.rtl.text.html
new file mode 100644
index 0000000000..7eba676652
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.drawing.style.measure.rtl.text.html
@@ -0,0 +1,31 @@
+
+
+OffscreenCanvas test: 2d.text.drawing.style.measure.rtl.text
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.text.drawing.style.measure.rtl.text
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Measurement should follow canvas direction instead text direction
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.drawing.style.measure.rtl.text.worker.js b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.drawing.style.measure.rtl.text.worker.js
new file mode 100644
index 0000000000..585e6c0c74
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.drawing.style.measure.rtl.text.worker.js
@@ -0,0 +1,27 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.text.drawing.style.measure.rtl.text
+// Description:Measurement should follow canvas direction instead text direction
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("Measurement should follow canvas direction instead text direction");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+metrics = ctx.measureText('اَلْعَرَبِيَّةُ');
+_assert(metrics.actualBoundingBoxLeft < metrics.actualBoundingBoxRight, "metrics.actualBoundingBoxLeft < metrics.actualBoundingBoxRight");
+
+metrics = ctx.measureText('hello');
+_assert(metrics.actualBoundingBoxLeft < metrics.actualBoundingBoxRight, "metrics.actualBoundingBoxLeft < metrics.actualBoundingBoxRight");
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.drawing.style.measure.textAlign.html b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.drawing.style.measure.textAlign.html
new file mode 100644
index 0000000000..f784f569b2
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.drawing.style.measure.textAlign.html
@@ -0,0 +1,33 @@
+
+
+OffscreenCanvas test: 2d.text.drawing.style.measure.textAlign
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.text.drawing.style.measure.textAlign
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Measurement should be related to textAlignment
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.drawing.style.measure.textAlign.worker.js b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.drawing.style.measure.textAlign.worker.js
new file mode 100644
index 0000000000..3af2f47143
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.drawing.style.measure.textAlign.worker.js
@@ -0,0 +1,29 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.text.drawing.style.measure.textAlign
+// Description:Measurement should be related to textAlignment
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("Measurement should be related to textAlignment");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+ctx.textAlign = "right";
+metrics = ctx.measureText('hello');
+_assert(metrics.actualBoundingBoxLeft > metrics.actualBoundingBoxRight, "metrics.actualBoundingBoxLeft > metrics.actualBoundingBoxRight");
+
+ctx.textAlign = "left"
+metrics = ctx.measureText('hello');
+_assert(metrics.actualBoundingBoxLeft < metrics.actualBoundingBoxRight, "metrics.actualBoundingBoxLeft < metrics.actualBoundingBoxRight");
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.drawing.style.nonfinite.spacing.html b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.drawing.style.nonfinite.spacing.html
new file mode 100644
index 0000000000..8e80f9a3ab
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.drawing.style.nonfinite.spacing.html
@@ -0,0 +1,39 @@
+
+
+OffscreenCanvas test: 2d.text.drawing.style.nonfinite.spacing
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.text.drawing.style.nonfinite.spacing
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Testing letter spacing and word spacing with nonfinite inputs
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.drawing.style.nonfinite.spacing.worker.js b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.drawing.style.nonfinite.spacing.worker.js
new file mode 100644
index 0000000000..adba253282
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.drawing.style.nonfinite.spacing.worker.js
@@ -0,0 +1,35 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.text.drawing.style.nonfinite.spacing
+// Description:Testing letter spacing and word spacing with nonfinite inputs
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("Testing letter spacing and word spacing with nonfinite inputs");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+_assertSame(ctx.letterSpacing, '0px', "ctx.letterSpacing", "'0px'");
+_assertSame(ctx.wordSpacing, '0px', "ctx.wordSpacing", "'0px'");
+
+function test_word_spacing(value) {
+  ctx.wordSpacing = value;
+  ctx.letterSpacing = value;
+  _assertSame(ctx.wordSpacing, '0px', "ctx.wordSpacing", "'0px'");
+  _assertSame(ctx.letterSpacing, '0px', "ctx.letterSpacing", "'0px'");
+}
+test_word_spacing(NaN);
+test_word_spacing(Infinity);
+test_word_spacing(-Infinity);
+
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.drawing.style.spacing.html b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.drawing.style.spacing.html
new file mode 100644
index 0000000000..ea480c4690
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.drawing.style.spacing.html
@@ -0,0 +1,46 @@
+
+
+OffscreenCanvas test: 2d.text.drawing.style.spacing
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.text.drawing.style.spacing
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Testing letter spacing and word spacing
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.drawing.style.spacing.worker.js b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.drawing.style.spacing.worker.js
new file mode 100644
index 0000000000..a413f9270a
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.drawing.style.spacing.worker.js
@@ -0,0 +1,42 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.text.drawing.style.spacing
+// Description:Testing letter spacing and word spacing
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("Testing letter spacing and word spacing");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+_assertSame(ctx.letterSpacing, '0px', "ctx.letterSpacing", "'0px'");
+_assertSame(ctx.wordSpacing, '0px', "ctx.wordSpacing", "'0px'");
+
+ctx.letterSpacing = '3px';
+_assertSame(ctx.letterSpacing, '3px', "ctx.letterSpacing", "'3px'");
+_assertSame(ctx.wordSpacing, '0px', "ctx.wordSpacing", "'0px'");
+
+ctx.wordSpacing = '5px';
+_assertSame(ctx.letterSpacing, '3px', "ctx.letterSpacing", "'3px'");
+_assertSame(ctx.wordSpacing, '5px', "ctx.wordSpacing", "'5px'");
+
+ctx.letterSpacing = '-1px';
+ctx.wordSpacing = '-1px';
+_assertSame(ctx.letterSpacing, '-1px', "ctx.letterSpacing", "'-1px'");
+_assertSame(ctx.wordSpacing, '-1px', "ctx.wordSpacing", "'-1px'");
+
+ctx.letterSpacing = '1PX';
+ctx.wordSpacing = '1EM';
+_assertSame(ctx.letterSpacing, '1px', "ctx.letterSpacing", "'1px'");
+_assertSame(ctx.wordSpacing, '1em', "ctx.wordSpacing", "'1em'");
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.drawing.style.textRendering.settings.html b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.drawing.style.textRendering.settings.html
new file mode 100644
index 0000000000..d0c7b88a0c
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.drawing.style.textRendering.settings.html
@@ -0,0 +1,57 @@
+
+
+OffscreenCanvas test: 2d.text.drawing.style.textRendering.settings
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.text.drawing.style.textRendering.settings
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Testing basic functionalities of textRendering in Canvas
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.drawing.style.textRendering.settings.worker.js b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.drawing.style.textRendering.settings.worker.js
new file mode 100644
index 0000000000..e8402c2a08
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.drawing.style.textRendering.settings.worker.js
@@ -0,0 +1,53 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.text.drawing.style.textRendering.settings
+// Description:Testing basic functionalities of textRendering in Canvas
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("Testing basic functionalities of textRendering in Canvas");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+// Setting textRendering with lower cases
+_assertSame(ctx.textRendering, "auto", "ctx.textRendering", "\"auto\"");
+
+ctx.textRendering = "auto";
+_assertSame(ctx.textRendering, "auto", "ctx.textRendering", "\"auto\"");
+
+ctx.textRendering = "optimizespeed";
+_assertSame(ctx.textRendering, "optimizeSpeed", "ctx.textRendering", "\"optimizeSpeed\"");
+
+ctx.textRendering = "optimizelegibility";
+_assertSame(ctx.textRendering, "optimizeLegibility", "ctx.textRendering", "\"optimizeLegibility\"");
+
+ctx.textRendering = "geometricprecision";
+_assertSame(ctx.textRendering, "geometricPrecision", "ctx.textRendering", "\"geometricPrecision\"");
+
+// Setting textRendering with lower cases and upper cases word.
+ctx.textRendering = "aUto";
+_assertSame(ctx.textRendering, "auto", "ctx.textRendering", "\"auto\"");
+
+ctx.textRendering = "OPtimizeSpeed";
+_assertSame(ctx.textRendering, "optimizeSpeed", "ctx.textRendering", "\"optimizeSpeed\"");
+
+ctx.textRendering = "OPtimizELEgibility";
+_assertSame(ctx.textRendering, "optimizeLegibility", "ctx.textRendering", "\"optimizeLegibility\"");
+
+ctx.textRendering = "GeometricPrecision";
+_assertSame(ctx.textRendering, "geometricPrecision", "ctx.textRendering", "\"geometricPrecision\"");
+
+// Setting textRendering with non-existing font variant.
+ctx.textRendering = "abcd";
+_assertSame(ctx.textRendering, "geometricPrecision", "ctx.textRendering", "\"geometricPrecision\"");
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.drawing.style.wordSpacing.change.font.html b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.drawing.style.wordSpacing.change.font.html
new file mode 100644
index 0000000000..f8b72fbfab
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.drawing.style.wordSpacing.change.font.html
@@ -0,0 +1,46 @@
+
+
+OffscreenCanvas test: 2d.text.drawing.style.wordSpacing.change.font
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.text.drawing.style.wordSpacing.change.font
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Set word spacing and word spacing to font dependent value and verify it works after font change.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.drawing.style.wordSpacing.change.font.worker.js b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.drawing.style.wordSpacing.change.font.worker.js
new file mode 100644
index 0000000000..993cd28501
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.drawing.style.wordSpacing.change.font.worker.js
@@ -0,0 +1,42 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.text.drawing.style.wordSpacing.change.font
+// Description:Set word spacing and word spacing to font dependent value and verify it works after font change.
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("Set word spacing and word spacing to font dependent value and verify it works after font change.");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+_assertSame(ctx.letterSpacing, '0px', "ctx.letterSpacing", "'0px'");
+_assertSame(ctx.wordSpacing, '0px', "ctx.wordSpacing", "'0px'");
+// Get the width for 'Hello World, again' at default size, 10px.
+var width_normal = ctx.measureText('Hello World, again').width;
+
+ctx.wordSpacing = '1em';
+_assertSame(ctx.wordSpacing, '1em', "ctx.wordSpacing", "'1em'");
+// 1em = 10px. Add 10px after each word in "Hello World, again",
+// makes it 20px longer.
+var width_with_spacing = ctx.measureText('Hello World, again').width;
+_assertSame(width_with_spacing, width_normal + 20, "width_with_spacing", "width_normal + 20");
+
+// Changing font to 20px. Without resetting the spacing, 1em wordSpacing
+// is now 20px, so it's suppose to be 40px longer without any wordSpacing set.
+ctx.font = '20px serif';
+width_with_spacing = ctx.measureText('Hello World, again').width;
+// Now calculate the reference spacing for "Hello World, again" with no spacing.
+ctx.wordSpacing = '0em';
+width_normal = ctx.measureText('Hello World, again').width;
+_assertSame(width_with_spacing, width_normal + 40, "width_with_spacing", "width_normal + 40");
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.drawing.style.wordSpacing.measure.absolute.html b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.drawing.style.wordSpacing.measure.absolute.html
new file mode 100644
index 0000000000..07ca896f97
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.drawing.style.wordSpacing.measure.absolute.html
@@ -0,0 +1,53 @@
+
+
+OffscreenCanvas test: 2d.text.drawing.style.wordSpacing.measure.absolute
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.text.drawing.style.wordSpacing.measure.absolute
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Testing if word spacing is working properly with absolute length
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.drawing.style.wordSpacing.measure.absolute.worker.js b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.drawing.style.wordSpacing.measure.absolute.worker.js
new file mode 100644
index 0000000000..ebfc05644f
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.drawing.style.wordSpacing.measure.absolute.worker.js
@@ -0,0 +1,49 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.text.drawing.style.wordSpacing.measure.absolute
+// Description:Testing if word spacing is working properly with absolute length
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("Testing if word spacing is working properly with absolute length");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+_assertSame(ctx.letterSpacing, '0px', "ctx.letterSpacing", "'0px'");
+_assertSame(ctx.wordSpacing, '0px', "ctx.wordSpacing", "'0px'");
+var width_normal = ctx.measureText('Hello World, again').width;
+
+function test_word_spacing(value, difference_spacing, epsilon) {
+  ctx.wordSpacing = value;
+  _assertSame(ctx.letterSpacing, '0px', "ctx.letterSpacing", "'0px'");
+  _assertSame(ctx.wordSpacing, value, "ctx.wordSpacing", "value");
+  width_with_word_spacing = ctx.measureText('Hello World, again').width;
+  assert_approx_equals(width_with_word_spacing, width_normal + difference_spacing, epsilon, "word spacing doesn't work.");
+}
+
+// The first value is the word Spacing to be set, the second value the
+// change in length of string 'Hello World', note that there are 2 words
+// in 'Hello World, again', so the length difference is always wordSpacing * 2.
+// and the third value is the acceptable differencee for the length change,
+// note that unit such as 1cm/1mm doesn't map to an exact pixel value.
+test_cases = [['3px', 6, 0.1],
+              ['5px', 10, 0.1],
+              ['-2px', -4, 0.1],
+              ['1in', 192, 0.1],
+              ['-0.1cm', -7.57, 0.2],
+              ['-0.6mm', -4.54, 0.2]]
+
+for (const test_case of test_cases) {
+  test_word_spacing(test_case[0], test_case[1], test_case[2]);
+}
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.drawing.style.wordSpacing.measure.relative.html b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.drawing.style.wordSpacing.measure.relative.html
new file mode 100644
index 0000000000..95f87cb03d
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.drawing.style.wordSpacing.measure.relative.html
@@ -0,0 +1,51 @@
+
+
+OffscreenCanvas test: 2d.text.drawing.style.wordSpacing.measure.relative
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.text.drawing.style.wordSpacing.measure.relative
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Testing if word spacing is working properly with font-relative length
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.drawing.style.wordSpacing.measure.relative.worker.js b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.drawing.style.wordSpacing.measure.relative.worker.js
new file mode 100644
index 0000000000..2bded51edc
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.drawing.style.wordSpacing.measure.relative.worker.js
@@ -0,0 +1,47 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.text.drawing.style.wordSpacing.measure.relative
+// Description:Testing if word spacing is working properly with font-relative length
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("Testing if word spacing is working properly with font-relative length");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+_assertSame(ctx.letterSpacing, '0px', "ctx.letterSpacing", "'0px'");
+_assertSame(ctx.wordSpacing, '0px', "ctx.wordSpacing", "'0px'");
+ctx.font = "10px monospace";
+var width_normal = ctx.measureText('Hello World, again').width;
+var ch_width = width_normal / 18;
+
+function test_word_spacing(value, difference_spacing, epsilon) {
+  ctx.wordSpacing = value;
+  _assertSame(ctx.letterSpacing, '0px', "ctx.letterSpacing", "'0px'");
+  _assertSame(ctx.wordSpacing, value, "ctx.wordSpacing", "value");
+  width_with_word_spacing = ctx.measureText('Hello World, again').width;
+  assert_approx_equals(width_with_word_spacing, width_normal + difference_spacing, epsilon, "word spacing doesn't work.");
+}
+
+// The first value is the word Spacing to be set, the second value the
+// change in length of string 'Hello World', note that there are 2 words
+// in 'Hello World, again', so the length difference is always wordSpacing * 2.
+// and the third value is the acceptable differencee for the length change.
+test_cases = [['1em', 20, 0.1],
+              ['-0.5em', -10, 0.1],
+              ['1ch', 2 * ch_width, 0.1]]
+
+for (const test_case of test_cases) {
+  test_word_spacing(test_case[0], test_case[1], test_case[2]);
+}
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.font.default.html b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.font.default.html
new file mode 100644
index 0000000000..191c1a5c31
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.font.default.html
@@ -0,0 +1,27 @@
+
+
+OffscreenCanvas test: 2d.text.font.default
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.text.font.default
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.font.default.worker.js b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.font.default.worker.js
new file mode 100644
index 0000000000..dc620ed439
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.font.default.worker.js
@@ -0,0 +1,23 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.text.font.default
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+_assertSame(ctx.font, '10px sans-serif', "ctx.font", "'10px sans-serif'");
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.font.parse.basic.html b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.font.parse.basic.html
new file mode 100644
index 0000000000..aee555656a
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.font.parse.basic.html
@@ -0,0 +1,31 @@
+
+
+OffscreenCanvas test: 2d.text.font.parse.basic
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.text.font.parse.basic
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.font.parse.basic.worker.js b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.font.parse.basic.worker.js
new file mode 100644
index 0000000000..0d8a4aad32
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.font.parse.basic.worker.js
@@ -0,0 +1,27 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.text.font.parse.basic
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+ctx.font = '20px serif';
+_assertSame(ctx.font, '20px serif', "ctx.font", "'20px serif'");
+
+ctx.font = '20PX   SERIF';
+_assertSame(ctx.font, '20px serif', "ctx.font", "'20px serif'");
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.font.parse.complex.html b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.font.parse.complex.html
new file mode 100644
index 0000000000..361b44de1c
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.font.parse.complex.html
@@ -0,0 +1,28 @@
+
+
+OffscreenCanvas test: 2d.text.font.parse.complex
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.text.font.parse.complex
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.font.parse.complex.worker.js b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.font.parse.complex.worker.js
new file mode 100644
index 0000000000..3c05b6fb81
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.font.parse.complex.worker.js
@@ -0,0 +1,24 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.text.font.parse.complex
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+ctx.font = 'small-caps italic 400 12px/2 Unknown Font, sans-serif';
+_assertSame(ctx.font, 'italic small-caps 12px "Unknown Font", sans-serif', "ctx.font", "'italic small-caps 12px \"Unknown Font\", sans-serif'");
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.font.parse.family.html b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.font.parse.family.html
new file mode 100644
index 0000000000..70127ba67c
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.font.parse.family.html
@@ -0,0 +1,28 @@
+
+
+OffscreenCanvas test: 2d.text.font.parse.family
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.text.font.parse.family
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.font.parse.family.worker.js b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.font.parse.family.worker.js
new file mode 100644
index 0000000000..7640de2be0
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.font.parse.family.worker.js
@@ -0,0 +1,24 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.text.font.parse.family
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+ctx.font = '20px cursive,fantasy,monospace,sans-serif,serif,UnquotedFont,"QuotedFont\\\\\\","';
+_assertSame(ctx.font, '20px cursive, fantasy, monospace, sans-serif, serif, UnquotedFont, "QuotedFont\\\\\\","', "ctx.font", "'20px cursive, fantasy, monospace, sans-serif, serif, UnquotedFont, \"QuotedFont\\\\\\\\\\\\\",\"'");
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.font.parse.invalid.html b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.font.parse.invalid.html
new file mode 100644
index 0000000000..483476bcfa
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.font.parse.invalid.html
@@ -0,0 +1,72 @@
+
+
+OffscreenCanvas test: 2d.text.font.parse.invalid
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.text.font.parse.invalid
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.font.parse.invalid.worker.js b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.font.parse.invalid.worker.js
new file mode 100644
index 0000000000..a4e19a6887
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.font.parse.invalid.worker.js
@@ -0,0 +1,68 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.text.font.parse.invalid
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+ctx.font = '20px serif';
+_assertSame(ctx.font, '20px serif', "ctx.font", "'20px serif'");
+
+ctx.font = '20px serif';
+ctx.font = '';
+_assertSame(ctx.font, '20px serif', "ctx.font", "'20px serif'");
+
+ctx.font = '20px serif';
+ctx.font = 'bogus';
+_assertSame(ctx.font, '20px serif', "ctx.font", "'20px serif'");
+
+ctx.font = '20px serif';
+ctx.font = 'inherit';
+_assertSame(ctx.font, '20px serif', "ctx.font", "'20px serif'");
+
+ctx.font = '20px serif';
+ctx.font = '10px {bogus}';
+_assertSame(ctx.font, '20px serif', "ctx.font", "'20px serif'");
+
+ctx.font = '20px serif';
+ctx.font = '10px initial';
+_assertSame(ctx.font, '20px serif', "ctx.font", "'20px serif'");
+
+ctx.font = '20px serif';
+ctx.font = '10px default';
+_assertSame(ctx.font, '20px serif', "ctx.font", "'20px serif'");
+
+ctx.font = '20px serif';
+ctx.font = '10px inherit';
+_assertSame(ctx.font, '20px serif', "ctx.font", "'20px serif'");
+
+ctx.font = '20px serif';
+ctx.font = '10px revert';
+_assertSame(ctx.font, '20px serif', "ctx.font", "'20px serif'");
+
+ctx.font = '20px serif';
+ctx.font = 'var(--x)';
+_assertSame(ctx.font, '20px serif', "ctx.font", "'20px serif'");
+
+ctx.font = '20px serif';
+ctx.font = 'var(--x, 10px serif)';
+_assertSame(ctx.font, '20px serif', "ctx.font", "'20px serif'");
+
+ctx.font = '20px serif';
+ctx.font = '1em serif; background: green; margin: 10px';
+_assertSame(ctx.font, '20px serif', "ctx.font", "'20px serif'");
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.font.parse.system.html b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.font.parse.system.html
new file mode 100644
index 0000000000..24cb730c22
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.font.parse.system.html
@@ -0,0 +1,28 @@
+
+
+OffscreenCanvas test: 2d.text.font.parse.system
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.text.font.parse.system
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              System fonts must be computed to explicit values
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.font.parse.system.worker.js b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.font.parse.system.worker.js
new file mode 100644
index 0000000000..5c2a8b481a
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.font.parse.system.worker.js
@@ -0,0 +1,24 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.text.font.parse.system
+// Description:System fonts must be computed to explicit values
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("System fonts must be computed to explicit values");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+ctx.font = 'message-box';
+_assertDifferent(ctx.font, 'message-box', "ctx.font", "'message-box'");
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.font.parse.tiny.html b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.font.parse.tiny.html
new file mode 100644
index 0000000000..6c17ad47b6
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.font.parse.tiny.html
@@ -0,0 +1,28 @@
+
+
+OffscreenCanvas test: 2d.text.font.parse.tiny
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.text.font.parse.tiny
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.font.parse.tiny.worker.js b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.font.parse.tiny.worker.js
new file mode 100644
index 0000000000..2171e2cdcc
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.font.parse.tiny.worker.js
@@ -0,0 +1,24 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.text.font.parse.tiny
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+ctx.font = '1px sans-serif';
+_assertSame(ctx.font, '1px sans-serif', "ctx.font", "'1px sans-serif'");
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.font.relative_size.html b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.font.relative_size.html
new file mode 100644
index 0000000000..eef3be79c7
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.font.relative_size.html
@@ -0,0 +1,28 @@
+
+
+OffscreenCanvas test: 2d.text.font.relative_size
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.text.font.relative_size
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.font.relative_size.worker.js b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.font.relative_size.worker.js
new file mode 100644
index 0000000000..c4d78b8bcc
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.font.relative_size.worker.js
@@ -0,0 +1,24 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.text.font.relative_size
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+ctx.font = '1em sans-serif';
+_assertSame(ctx.font, '10px sans-serif', "ctx.font", "'10px sans-serif'");
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.measure.actualBoundingBox.html b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.measure.actualBoundingBox.html
new file mode 100644
index 0000000000..b7ce281b41
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.measure.actualBoundingBox.html
@@ -0,0 +1,55 @@
+
+
+OffscreenCanvas test: 2d.text.measure.actualBoundingBox
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.text.measure.actualBoundingBox
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Testing actualBoundingBox for OffscreenCanvas
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.measure.actualBoundingBox.worker.js b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.measure.actualBoundingBox.worker.js
new file mode 100644
index 0000000000..4693bb6984
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.measure.actualBoundingBox.worker.js
@@ -0,0 +1,51 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.text.measure.actualBoundingBox
+// Description:Testing actualBoundingBox for OffscreenCanvas
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("Testing actualBoundingBox for OffscreenCanvas");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+var f = new FontFace("CanvasTest", "url('/fonts/CanvasTest.ttf')");
+let fonts = (self.fonts ? self.fonts : document.fonts);
+f.load();
+fonts.add(f);
+fonts.ready.then(function() {
+    ctx.font = '50px CanvasTest';
+    ctx.direction = 'ltr';
+    ctx.align = 'left'
+    ctx.baseline = 'alphabetic'
+    // Some platforms may return '-0'.
+    _assertSame(Math.abs(ctx.measureText('A').actualBoundingBoxLeft), 0, "Math.abs(ctx.measureText('A').actualBoundingBoxLeft)", "0");
+    // Different platforms may render text slightly different.
+    _assert(ctx.measureText('A').actualBoundingBoxRight >= 50, "ctx.measureText('A').actualBoundingBoxRight >= 50");
+    _assert(ctx.measureText('A').actualBoundingBoxAscent >= 35, "ctx.measureText('A').actualBoundingBoxAscent >= 35");
+    _assertSame(Math.abs(ctx.measureText('A').actualBoundingBoxDescent), 0, "Math.abs(ctx.measureText('A').actualBoundingBoxDescent)", "0");
+
+    _assert(ctx.measureText('D').actualBoundingBoxLeft >= 48, "ctx.measureText('D').actualBoundingBoxLeft >= 48");
+    _assert(ctx.measureText('D').actualBoundingBoxLeft <= 52, "ctx.measureText('D').actualBoundingBoxLeft <= 52");
+    _assert(ctx.measureText('D').actualBoundingBoxRight >= 75, "ctx.measureText('D').actualBoundingBoxRight >= 75");
+    _assert(ctx.measureText('D').actualBoundingBoxRight <= 80, "ctx.measureText('D').actualBoundingBoxRight <= 80");
+    _assert(ctx.measureText('D').actualBoundingBoxAscent >= 35, "ctx.measureText('D').actualBoundingBoxAscent >= 35");
+    _assert(ctx.measureText('D').actualBoundingBoxAscent <= 40, "ctx.measureText('D').actualBoundingBoxAscent <= 40");
+    _assert(ctx.measureText('D').actualBoundingBoxDescent >= 12, "ctx.measureText('D').actualBoundingBoxDescent >= 12");
+    _assert(ctx.measureText('D').actualBoundingBoxDescent <= 15, "ctx.measureText('D').actualBoundingBoxDescent <= 15");
+
+    _assertSame(Math.abs(ctx.measureText('ABCD').actualBoundingBoxLeft), 0, "Math.abs(ctx.measureText('ABCD').actualBoundingBoxLeft)", "0");
+    _assert(ctx.measureText('ABCD').actualBoundingBoxRight >= 200, "ctx.measureText('ABCD').actualBoundingBoxRight >= 200");
+    _assert(ctx.measureText('ABCD').actualBoundingBoxAscent >= 85, "ctx.measureText('ABCD').actualBoundingBoxAscent >= 85");
+    _assert(ctx.measureText('ABCD').actualBoundingBoxDescent >= 37, "ctx.measureText('ABCD').actualBoundingBoxDescent >= 37");
+}).then(t_pass, t_fail);
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.measure.advances.html b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.measure.advances.html
new file mode 100644
index 0000000000..ed3affcda5
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.measure.advances.html
@@ -0,0 +1,48 @@
+
+
+OffscreenCanvas test: 2d.text.measure.advances
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.text.measure.advances
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Testing width advances for OffscreenCanvas
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.measure.advances.worker.js b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.measure.advances.worker.js
new file mode 100644
index 0000000000..f1d4bb98f9
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.measure.advances.worker.js
@@ -0,0 +1,44 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.text.measure.advances
+// Description:Testing width advances for OffscreenCanvas
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("Testing width advances for OffscreenCanvas");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+var f = new FontFace("CanvasTest", "url('/fonts/CanvasTest.ttf')");
+let fonts = (self.fonts ? self.fonts : document.fonts);
+f.load();
+fonts.add(f);
+fonts.ready.then(function() {
+    ctx.font = '50px CanvasTest';
+    ctx.direction = 'ltr';
+    ctx.align = 'left'
+    // Some platforms may return '-0'.
+    _assertSame(Math.abs(ctx.measureText('Hello').advances[0]), 0, "Math.abs(ctx.measureText('Hello').advances[\""+(0)+"\"])", "0");
+    // Different platforms may render text slightly different.
+    _assert(ctx.measureText('Hello').advances[1] >= 36, "ctx.measureText('Hello').advances[\""+(1)+"\"] >= 36");
+    _assert(ctx.measureText('Hello').advances[2] >= 58, "ctx.measureText('Hello').advances[\""+(2)+"\"] >= 58");
+    _assert(ctx.measureText('Hello').advances[3] >= 70, "ctx.measureText('Hello').advances[\""+(3)+"\"] >= 70");
+    _assert(ctx.measureText('Hello').advances[4] >= 80, "ctx.measureText('Hello').advances[\""+(4)+"\"] >= 80");
+
+    var tm = ctx.measureText('Hello');
+    _assertSame(ctx.measureText('Hello').advances[0], tm.advances[0], "ctx.measureText('Hello').advances[\""+(0)+"\"]", "tm.advances[\""+(0)+"\"]");
+    _assertSame(ctx.measureText('Hello').advances[1], tm.advances[1], "ctx.measureText('Hello').advances[\""+(1)+"\"]", "tm.advances[\""+(1)+"\"]");
+    _assertSame(ctx.measureText('Hello').advances[2], tm.advances[2], "ctx.measureText('Hello').advances[\""+(2)+"\"]", "tm.advances[\""+(2)+"\"]");
+    _assertSame(ctx.measureText('Hello').advances[3], tm.advances[3], "ctx.measureText('Hello').advances[\""+(3)+"\"]", "tm.advances[\""+(3)+"\"]");
+    _assertSame(ctx.measureText('Hello').advances[4], tm.advances[4], "ctx.measureText('Hello').advances[\""+(4)+"\"]", "tm.advances[\""+(4)+"\"]");
+}).then(t_pass, t_fail);
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.measure.baselines.html b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.measure.baselines.html
new file mode 100644
index 0000000000..993fbb0822
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.measure.baselines.html
@@ -0,0 +1,41 @@
+
+
+OffscreenCanvas test: 2d.text.measure.baselines
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.text.measure.baselines
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Testing baselines for OffscreenCanvas
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.measure.baselines.worker.js b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.measure.baselines.worker.js
new file mode 100644
index 0000000000..0c060169d3
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.measure.baselines.worker.js
@@ -0,0 +1,37 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.text.measure.baselines
+// Description:Testing baselines for OffscreenCanvas
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("Testing baselines for OffscreenCanvas");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+var f = new FontFace("CanvasTest", "url('/fonts/CanvasTest.ttf')");
+let fonts = (self.fonts ? self.fonts : document.fonts);
+f.load();
+fonts.add(f);
+fonts.ready.then(function() {
+   ctx.font = '50px CanvasTest';
+   ctx.direction = 'ltr';
+   ctx.align = 'left'
+   _assertSame(Math.abs(ctx.measureText('A').getBaselines().alphabetic), 0, "Math.abs(ctx.measureText('A').getBaselines().alphabetic)", "0");
+   _assertSame(ctx.measureText('A').getBaselines().ideographic, -39, "ctx.measureText('A').getBaselines().ideographic", "-39");
+   _assertSame(ctx.measureText('A').getBaselines().hanging, 68, "ctx.measureText('A').getBaselines().hanging", "68");
+
+   _assertSame(Math.abs(ctx.measureText('ABCD').getBaselines().alphabetic), 0, "Math.abs(ctx.measureText('ABCD').getBaselines().alphabetic)", "0");
+   _assertSame(ctx.measureText('ABCD').getBaselines().ideographic, -39, "ctx.measureText('ABCD').getBaselines().ideographic", "-39");
+   _assertSame(ctx.measureText('ABCD').getBaselines().hanging, 68, "ctx.measureText('ABCD').getBaselines().hanging", "68");
+}).then(t_pass, t_fail);
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.measure.emHeights.html b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.measure.emHeights.html
new file mode 100644
index 0000000000..cc91f4017c
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.measure.emHeights.html
@@ -0,0 +1,41 @@
+
+
+OffscreenCanvas test: 2d.text.measure.emHeights
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.text.measure.emHeights
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Testing emHeights for OffscreenCanvas
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.measure.emHeights.worker.js b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.measure.emHeights.worker.js
new file mode 100644
index 0000000000..88432343d1
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.measure.emHeights.worker.js
@@ -0,0 +1,37 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.text.measure.emHeights
+// Description:Testing emHeights for OffscreenCanvas
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("Testing emHeights for OffscreenCanvas");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+var f = new FontFace("CanvasTest", "url('/fonts/CanvasTest.ttf')");
+let fonts = (self.fonts ? self.fonts : document.fonts);
+f.load();
+fonts.add(f);
+fonts.ready.then(function() {
+    ctx.font = '50px CanvasTest';
+    ctx.direction = 'ltr';
+    ctx.align = 'left'
+    _assertSame(ctx.measureText('A').emHeightAscent, 37.5, "ctx.measureText('A').emHeightAscent", "37.5");
+    _assertSame(ctx.measureText('A').emHeightDescent, 12.5, "ctx.measureText('A').emHeightDescent", "12.5");
+    _assertSame(ctx.measureText('A').emHeightDescent + ctx.measureText('A').emHeightAscent, 50, "ctx.measureText('A').emHeightDescent + ctx.measureText('A').emHeightAscent", "50");
+
+    _assertSame(ctx.measureText('ABCD').emHeightAscent, 37.5, "ctx.measureText('ABCD').emHeightAscent", "37.5");
+    _assertSame(ctx.measureText('ABCD').emHeightDescent, 12.5, "ctx.measureText('ABCD').emHeightDescent", "12.5");
+    _assertSame(ctx.measureText('ABCD').emHeightDescent + ctx.measureText('ABCD').emHeightAscent, 50, "ctx.measureText('ABCD').emHeightDescent + ctx.measureText('ABCD').emHeightAscent", "50");
+}).then(t_pass, t_fail);
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.measure.fontBoundingBox.html b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.measure.fontBoundingBox.html
new file mode 100644
index 0000000000..fca062b649
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.measure.fontBoundingBox.html
@@ -0,0 +1,39 @@
+
+
+OffscreenCanvas test: 2d.text.measure.fontBoundingBox
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.text.measure.fontBoundingBox
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Testing fontBoundingBox for OffscreenCanvas
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.measure.fontBoundingBox.worker.js b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.measure.fontBoundingBox.worker.js
new file mode 100644
index 0000000000..2f4b64d37a
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.measure.fontBoundingBox.worker.js
@@ -0,0 +1,35 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.text.measure.fontBoundingBox
+// Description:Testing fontBoundingBox for OffscreenCanvas
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("Testing fontBoundingBox for OffscreenCanvas");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+var f = new FontFace("CanvasTest", "url('/fonts/CanvasTest.ttf')");
+let fonts = (self.fonts ? self.fonts : document.fonts);
+f.load();
+fonts.add(f);
+fonts.ready.then(function() {
+    ctx.font = '50px CanvasTest';
+    ctx.direction = 'ltr';
+    ctx.align = 'left'
+    _assertSame(ctx.measureText('A').fontBoundingBoxAscent, 85, "ctx.measureText('A').fontBoundingBoxAscent", "85");
+    _assertSame(ctx.measureText('A').fontBoundingBoxDescent, 39, "ctx.measureText('A').fontBoundingBoxDescent", "39");
+
+    _assertSame(ctx.measureText('ABCD').fontBoundingBoxAscent, 85, "ctx.measureText('ABCD').fontBoundingBoxAscent", "85");
+    _assertSame(ctx.measureText('ABCD').fontBoundingBoxDescent, 39, "ctx.measureText('ABCD').fontBoundingBoxDescent", "39");
+}).then(t_pass, t_fail);
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.measure.width.basic.html b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.measure.width.basic.html
new file mode 100644
index 0000000000..074d62eec9
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.measure.width.basic.html
@@ -0,0 +1,38 @@
+
+
+OffscreenCanvas test: 2d.text.measure.width.basic
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.text.measure.width.basic
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              The width of character is same as font used for OffscreenCanvas
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.measure.width.basic.worker.js b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.measure.width.basic.worker.js
new file mode 100644
index 0000000000..a1933c82c2
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.measure.width.basic.worker.js
@@ -0,0 +1,34 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.text.measure.width.basic
+// Description:The width of character is same as font used for OffscreenCanvas
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("The width of character is same as font used for OffscreenCanvas");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+var f = new FontFace("CanvasTest", "url('/fonts/CanvasTest.ttf')");
+let fonts = (self.fonts ? self.fonts : document.fonts);
+f.load();
+fonts.add(f);
+fonts.ready.then(function() {
+    ctx.font = '50px CanvasTest';
+    _assertSame(ctx.measureText('A').width, 50, "ctx.measureText('A').width", "50");
+    _assertSame(ctx.measureText('AA').width, 100, "ctx.measureText('AA').width", "100");
+    _assertSame(ctx.measureText('ABCD').width, 200, "ctx.measureText('ABCD').width", "200");
+
+    ctx.font = '100px CanvasTest';
+    _assertSame(ctx.measureText('A').width, 100, "ctx.measureText('A').width", "100");
+}).then(t_pass, t_fail);
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.measure.width.empty.html b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.measure.width.empty.html
new file mode 100644
index 0000000000..45792b41dd
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.measure.width.empty.html
@@ -0,0 +1,33 @@
+
+
+OffscreenCanvas test: 2d.text.measure.width.empty
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.text.measure.width.empty
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              The empty string has zero width for OffscreenCanvas
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.measure.width.empty.worker.js b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.measure.width.empty.worker.js
new file mode 100644
index 0000000000..8d806c16cc
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.measure.width.empty.worker.js
@@ -0,0 +1,29 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.text.measure.width.empty
+// Description:The empty string has zero width for OffscreenCanvas
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("The empty string has zero width for OffscreenCanvas");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+var f = new FontFace("CanvasTest", "url('/fonts/CanvasTest.ttf')");
+let fonts = (self.fonts ? self.fonts : document.fonts);
+f.load();
+fonts.add(f);
+fonts.ready.then(function() {
+    ctx.font = '50px CanvasTest';
+    _assertSame(ctx.measureText("").width, 0, "ctx.measureText(\"\").width", "0");
+}).then(t_pass, t_fail);
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.measure.width.space.html b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.measure.width.space.html
new file mode 100644
index 0000000000..971a41e293
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.measure.width.space.html
@@ -0,0 +1,39 @@
+
+
+OffscreenCanvas test: 2d.text.measure.width.space
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.text.measure.width.space
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Space characters are converted to U+0020 and collapsed (per CSS) for OffscreenCanvas
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.measure.width.space.worker.js b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.measure.width.space.worker.js
new file mode 100644
index 0000000000..a52c1d8367
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.measure.width.space.worker.js
@@ -0,0 +1,35 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.text.measure.width.space
+// Description:Space characters are converted to U+0020 and collapsed (per CSS) for OffscreenCanvas
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("Space characters are converted to U+0020 and collapsed (per CSS) for OffscreenCanvas");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+var f = new FontFace("CanvasTest", "url('/fonts/CanvasTest.ttf')");
+let fonts = (self.fonts ? self.fonts : document.fonts);
+f.load();
+fonts.add(f);
+fonts.ready.then(function() {
+    ctx.font = '50px CanvasTest';
+    _assertSame(ctx.measureText('A B').width, 150, "ctx.measureText('A B').width", "150");
+    _assertSame(ctx.measureText('A  B').width, 200, "ctx.measureText('A  B').width", "200");
+    _assertSame(ctx.measureText('A \x09\x0a\x0c\x0d  \x09\x0a\x0c\x0dB').width, 150, "ctx.measureText('A \\x09\\x0a\\x0c\\x0d  \\x09\\x0a\\x0c\\x0dB').width", "150");
+    _assert(ctx.measureText('A \x0b B').width >= 200, "ctx.measureText('A \\x0b B').width >= 200");
+
+    _assertSame(ctx.measureText(' AB').width, 100, "ctx.measureText(' AB').width", "100");
+    _assertSame(ctx.measureText('AB ').width, 100, "ctx.measureText('AB ').width", "100");
+}).then(t_pass, t_fail);
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.setFont.mathFont.html b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.setFont.mathFont.html
new file mode 100644
index 0000000000..ed4752dfcb
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.setFont.mathFont.html
@@ -0,0 +1,27 @@
+
+
+OffscreenCanvas test: 2d.text.setFont.mathFont
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.text.setFont.mathFont
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              crbug.com/1212190, make sure offscreencanvas doesn't crash with Math Font
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.setFont.mathFont.worker.js b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.setFont.mathFont.worker.js
new file mode 100644
index 0000000000..39e3031ecf
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/text/2d.text.setFont.mathFont.worker.js
@@ -0,0 +1,23 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.text.setFont.mathFont
+// Description:crbug.com/1212190, make sure offscreencanvas doesn't crash with Math Font
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("crbug.com/1212190, make sure offscreencanvas doesn't crash with Math Font");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+ctx.font = "math serif";
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/the-canvas-state/2d.state.saverestore.bitmap.html b/testing/web-platform/tests/html/canvas/offscreen/the-canvas-state/2d.state.saverestore.bitmap.html
new file mode 100644
index 0000000000..3a6e67b77e
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/the-canvas-state/2d.state.saverestore.bitmap.html
@@ -0,0 +1,33 @@
+
+
+OffscreenCanvas test: 2d.state.saverestore.bitmap
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.state.saverestore.bitmap
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              save()/restore() does not affect the current bitmap
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/the-canvas-state/2d.state.saverestore.bitmap.worker.js b/testing/web-platform/tests/html/canvas/offscreen/the-canvas-state/2d.state.saverestore.bitmap.worker.js
new file mode 100644
index 0000000000..c602488d36
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/the-canvas-state/2d.state.saverestore.bitmap.worker.js
@@ -0,0 +1,29 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.state.saverestore.bitmap
+// Description:save()/restore() does not affect the current bitmap
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("save()/restore() does not affect the current bitmap");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+ctx.fillStyle = '#f00';
+ctx.fillRect(0, 0, 100, 50);
+ctx.save();
+ctx.fillStyle = '#0f0';
+ctx.fillRect(0, 0, 100, 50);
+ctx.restore();
+_assertPixel(canvas, 50,25, 0,255,0,255);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/the-canvas-state/2d.state.saverestore.clip.html b/testing/web-platform/tests/html/canvas/offscreen/the-canvas-state/2d.state.saverestore.clip.html
new file mode 100644
index 0000000000..e96df9e2a4
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/the-canvas-state/2d.state.saverestore.clip.html
@@ -0,0 +1,35 @@
+
+
+OffscreenCanvas test: 2d.state.saverestore.clip
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.state.saverestore.clip
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              save()/restore() affects the clipping path
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/the-canvas-state/2d.state.saverestore.clip.worker.js b/testing/web-platform/tests/html/canvas/offscreen/the-canvas-state/2d.state.saverestore.clip.worker.js
new file mode 100644
index 0000000000..622d941677
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/the-canvas-state/2d.state.saverestore.clip.worker.js
@@ -0,0 +1,31 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.state.saverestore.clip
+// Description:save()/restore() affects the clipping path
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("save()/restore() affects the clipping path");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+ctx.fillStyle = '#f00';
+ctx.fillRect(0, 0, 100, 50);
+ctx.save();
+ctx.rect(0, 0, 1, 1);
+ctx.clip();
+ctx.restore();
+ctx.fillStyle = '#0f0';
+ctx.fillRect(0, 0, 100, 50);
+_assertPixel(canvas, 50,25, 0,255,0,255);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/the-canvas-state/2d.state.saverestore.fillStyle.html b/testing/web-platform/tests/html/canvas/offscreen/the-canvas-state/2d.state.saverestore.fillStyle.html
new file mode 100644
index 0000000000..91b23bd47a
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/the-canvas-state/2d.state.saverestore.fillStyle.html
@@ -0,0 +1,41 @@
+
+
+OffscreenCanvas test: 2d.state.saverestore.fillStyle
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.state.saverestore.fillStyle
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              save()/restore() works for fillStyle
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/the-canvas-state/2d.state.saverestore.fillStyle.worker.js b/testing/web-platform/tests/html/canvas/offscreen/the-canvas-state/2d.state.saverestore.fillStyle.worker.js
new file mode 100644
index 0000000000..fa4d77328a
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/the-canvas-state/2d.state.saverestore.fillStyle.worker.js
@@ -0,0 +1,37 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.state.saverestore.fillStyle
+// Description:save()/restore() works for fillStyle
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("save()/restore() works for fillStyle");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+// Test that restore() undoes any modifications
+var old = ctx.fillStyle;
+ctx.save();
+ctx.fillStyle = "#ff0000";
+ctx.restore();
+_assertSame(ctx.fillStyle, old, "ctx.fillStyle", "old");
+
+// Also test that save() doesn't modify the values
+ctx.fillStyle = "#ff0000";
+old = ctx.fillStyle;
+    // we're not interested in failures caused by get(set(x)) != x (e.g.
+    // from rounding), so compare against 'old' instead of against "#ff0000"
+ctx.save();
+_assertSame(ctx.fillStyle, old, "ctx.fillStyle", "old");
+ctx.restore();
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/the-canvas-state/2d.state.saverestore.globalAlpha.html b/testing/web-platform/tests/html/canvas/offscreen/the-canvas-state/2d.state.saverestore.globalAlpha.html
new file mode 100644
index 0000000000..01b9616bad
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/the-canvas-state/2d.state.saverestore.globalAlpha.html
@@ -0,0 +1,41 @@
+
+
+OffscreenCanvas test: 2d.state.saverestore.globalAlpha
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.state.saverestore.globalAlpha
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              save()/restore() works for globalAlpha
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/the-canvas-state/2d.state.saverestore.globalAlpha.worker.js b/testing/web-platform/tests/html/canvas/offscreen/the-canvas-state/2d.state.saverestore.globalAlpha.worker.js
new file mode 100644
index 0000000000..8b11054673
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/the-canvas-state/2d.state.saverestore.globalAlpha.worker.js
@@ -0,0 +1,37 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.state.saverestore.globalAlpha
+// Description:save()/restore() works for globalAlpha
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("save()/restore() works for globalAlpha");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+// Test that restore() undoes any modifications
+var old = ctx.globalAlpha;
+ctx.save();
+ctx.globalAlpha = 0.5;
+ctx.restore();
+_assertSame(ctx.globalAlpha, old, "ctx.globalAlpha", "old");
+
+// Also test that save() doesn't modify the values
+ctx.globalAlpha = 0.5;
+old = ctx.globalAlpha;
+    // we're not interested in failures caused by get(set(x)) != x (e.g.
+    // from rounding), so compare against 'old' instead of against 0.5
+ctx.save();
+_assertSame(ctx.globalAlpha, old, "ctx.globalAlpha", "old");
+ctx.restore();
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/the-canvas-state/2d.state.saverestore.globalCompositeOperation.html b/testing/web-platform/tests/html/canvas/offscreen/the-canvas-state/2d.state.saverestore.globalCompositeOperation.html
new file mode 100644
index 0000000000..557d3c074a
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/the-canvas-state/2d.state.saverestore.globalCompositeOperation.html
@@ -0,0 +1,41 @@
+
+
+OffscreenCanvas test: 2d.state.saverestore.globalCompositeOperation
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.state.saverestore.globalCompositeOperation
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              save()/restore() works for globalCompositeOperation
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/the-canvas-state/2d.state.saverestore.globalCompositeOperation.worker.js b/testing/web-platform/tests/html/canvas/offscreen/the-canvas-state/2d.state.saverestore.globalCompositeOperation.worker.js
new file mode 100644
index 0000000000..3534147b92
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/the-canvas-state/2d.state.saverestore.globalCompositeOperation.worker.js
@@ -0,0 +1,37 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.state.saverestore.globalCompositeOperation
+// Description:save()/restore() works for globalCompositeOperation
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("save()/restore() works for globalCompositeOperation");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+// Test that restore() undoes any modifications
+var old = ctx.globalCompositeOperation;
+ctx.save();
+ctx.globalCompositeOperation = "copy";
+ctx.restore();
+_assertSame(ctx.globalCompositeOperation, old, "ctx.globalCompositeOperation", "old");
+
+// Also test that save() doesn't modify the values
+ctx.globalCompositeOperation = "copy";
+old = ctx.globalCompositeOperation;
+    // we're not interested in failures caused by get(set(x)) != x (e.g.
+    // from rounding), so compare against 'old' instead of against "copy"
+ctx.save();
+_assertSame(ctx.globalCompositeOperation, old, "ctx.globalCompositeOperation", "old");
+ctx.restore();
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/the-canvas-state/2d.state.saverestore.lineCap.html b/testing/web-platform/tests/html/canvas/offscreen/the-canvas-state/2d.state.saverestore.lineCap.html
new file mode 100644
index 0000000000..e02cbd46dd
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/the-canvas-state/2d.state.saverestore.lineCap.html
@@ -0,0 +1,41 @@
+
+
+OffscreenCanvas test: 2d.state.saverestore.lineCap
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.state.saverestore.lineCap
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              save()/restore() works for lineCap
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/the-canvas-state/2d.state.saverestore.lineCap.worker.js b/testing/web-platform/tests/html/canvas/offscreen/the-canvas-state/2d.state.saverestore.lineCap.worker.js
new file mode 100644
index 0000000000..70de46a604
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/the-canvas-state/2d.state.saverestore.lineCap.worker.js
@@ -0,0 +1,37 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.state.saverestore.lineCap
+// Description:save()/restore() works for lineCap
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("save()/restore() works for lineCap");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+// Test that restore() undoes any modifications
+var old = ctx.lineCap;
+ctx.save();
+ctx.lineCap = "round";
+ctx.restore();
+_assertSame(ctx.lineCap, old, "ctx.lineCap", "old");
+
+// Also test that save() doesn't modify the values
+ctx.lineCap = "round";
+old = ctx.lineCap;
+    // we're not interested in failures caused by get(set(x)) != x (e.g.
+    // from rounding), so compare against 'old' instead of against "round"
+ctx.save();
+_assertSame(ctx.lineCap, old, "ctx.lineCap", "old");
+ctx.restore();
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/the-canvas-state/2d.state.saverestore.lineJoin.html b/testing/web-platform/tests/html/canvas/offscreen/the-canvas-state/2d.state.saverestore.lineJoin.html
new file mode 100644
index 0000000000..92100e9d1f
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/the-canvas-state/2d.state.saverestore.lineJoin.html
@@ -0,0 +1,41 @@
+
+
+OffscreenCanvas test: 2d.state.saverestore.lineJoin
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.state.saverestore.lineJoin
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              save()/restore() works for lineJoin
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/the-canvas-state/2d.state.saverestore.lineJoin.worker.js b/testing/web-platform/tests/html/canvas/offscreen/the-canvas-state/2d.state.saverestore.lineJoin.worker.js
new file mode 100644
index 0000000000..1da6db86be
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/the-canvas-state/2d.state.saverestore.lineJoin.worker.js
@@ -0,0 +1,37 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.state.saverestore.lineJoin
+// Description:save()/restore() works for lineJoin
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("save()/restore() works for lineJoin");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+// Test that restore() undoes any modifications
+var old = ctx.lineJoin;
+ctx.save();
+ctx.lineJoin = "round";
+ctx.restore();
+_assertSame(ctx.lineJoin, old, "ctx.lineJoin", "old");
+
+// Also test that save() doesn't modify the values
+ctx.lineJoin = "round";
+old = ctx.lineJoin;
+    // we're not interested in failures caused by get(set(x)) != x (e.g.
+    // from rounding), so compare against 'old' instead of against "round"
+ctx.save();
+_assertSame(ctx.lineJoin, old, "ctx.lineJoin", "old");
+ctx.restore();
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/the-canvas-state/2d.state.saverestore.lineWidth.html b/testing/web-platform/tests/html/canvas/offscreen/the-canvas-state/2d.state.saverestore.lineWidth.html
new file mode 100644
index 0000000000..24f9550792
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/the-canvas-state/2d.state.saverestore.lineWidth.html
@@ -0,0 +1,41 @@
+
+
+OffscreenCanvas test: 2d.state.saverestore.lineWidth
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.state.saverestore.lineWidth
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              save()/restore() works for lineWidth
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/the-canvas-state/2d.state.saverestore.lineWidth.worker.js b/testing/web-platform/tests/html/canvas/offscreen/the-canvas-state/2d.state.saverestore.lineWidth.worker.js
new file mode 100644
index 0000000000..657ded5b76
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/the-canvas-state/2d.state.saverestore.lineWidth.worker.js
@@ -0,0 +1,37 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.state.saverestore.lineWidth
+// Description:save()/restore() works for lineWidth
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("save()/restore() works for lineWidth");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+// Test that restore() undoes any modifications
+var old = ctx.lineWidth;
+ctx.save();
+ctx.lineWidth = 0.5;
+ctx.restore();
+_assertSame(ctx.lineWidth, old, "ctx.lineWidth", "old");
+
+// Also test that save() doesn't modify the values
+ctx.lineWidth = 0.5;
+old = ctx.lineWidth;
+    // we're not interested in failures caused by get(set(x)) != x (e.g.
+    // from rounding), so compare against 'old' instead of against 0.5
+ctx.save();
+_assertSame(ctx.lineWidth, old, "ctx.lineWidth", "old");
+ctx.restore();
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/the-canvas-state/2d.state.saverestore.miterLimit.html b/testing/web-platform/tests/html/canvas/offscreen/the-canvas-state/2d.state.saverestore.miterLimit.html
new file mode 100644
index 0000000000..b674467115
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/the-canvas-state/2d.state.saverestore.miterLimit.html
@@ -0,0 +1,41 @@
+
+
+OffscreenCanvas test: 2d.state.saverestore.miterLimit
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.state.saverestore.miterLimit
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              save()/restore() works for miterLimit
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/the-canvas-state/2d.state.saverestore.miterLimit.worker.js b/testing/web-platform/tests/html/canvas/offscreen/the-canvas-state/2d.state.saverestore.miterLimit.worker.js
new file mode 100644
index 0000000000..745f2919a0
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/the-canvas-state/2d.state.saverestore.miterLimit.worker.js
@@ -0,0 +1,37 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.state.saverestore.miterLimit
+// Description:save()/restore() works for miterLimit
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("save()/restore() works for miterLimit");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+// Test that restore() undoes any modifications
+var old = ctx.miterLimit;
+ctx.save();
+ctx.miterLimit = 0.5;
+ctx.restore();
+_assertSame(ctx.miterLimit, old, "ctx.miterLimit", "old");
+
+// Also test that save() doesn't modify the values
+ctx.miterLimit = 0.5;
+old = ctx.miterLimit;
+    // we're not interested in failures caused by get(set(x)) != x (e.g.
+    // from rounding), so compare against 'old' instead of against 0.5
+ctx.save();
+_assertSame(ctx.miterLimit, old, "ctx.miterLimit", "old");
+ctx.restore();
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/the-canvas-state/2d.state.saverestore.path.html b/testing/web-platform/tests/html/canvas/offscreen/the-canvas-state/2d.state.saverestore.path.html
new file mode 100644
index 0000000000..34c0b1e6d7
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/the-canvas-state/2d.state.saverestore.path.html
@@ -0,0 +1,34 @@
+
+
+OffscreenCanvas test: 2d.state.saverestore.path
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.state.saverestore.path
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              save()/restore() does not affect the current path
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/the-canvas-state/2d.state.saverestore.path.worker.js b/testing/web-platform/tests/html/canvas/offscreen/the-canvas-state/2d.state.saverestore.path.worker.js
new file mode 100644
index 0000000000..24cec15972
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/the-canvas-state/2d.state.saverestore.path.worker.js
@@ -0,0 +1,30 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.state.saverestore.path
+// Description:save()/restore() does not affect the current path
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("save()/restore() does not affect the current path");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+ctx.fillStyle = '#f00';
+ctx.fillRect(0, 0, 100, 50);
+ctx.save();
+ctx.rect(0, 0, 100, 50);
+ctx.restore();
+ctx.fillStyle = '#0f0';
+ctx.fill();
+_assertPixel(canvas, 50,25, 0,255,0,255);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/the-canvas-state/2d.state.saverestore.shadowBlur.html b/testing/web-platform/tests/html/canvas/offscreen/the-canvas-state/2d.state.saverestore.shadowBlur.html
new file mode 100644
index 0000000000..af2ee91307
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/the-canvas-state/2d.state.saverestore.shadowBlur.html
@@ -0,0 +1,41 @@
+
+
+OffscreenCanvas test: 2d.state.saverestore.shadowBlur
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.state.saverestore.shadowBlur
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              save()/restore() works for shadowBlur
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/the-canvas-state/2d.state.saverestore.shadowBlur.worker.js b/testing/web-platform/tests/html/canvas/offscreen/the-canvas-state/2d.state.saverestore.shadowBlur.worker.js
new file mode 100644
index 0000000000..12acd3d294
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/the-canvas-state/2d.state.saverestore.shadowBlur.worker.js
@@ -0,0 +1,37 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.state.saverestore.shadowBlur
+// Description:save()/restore() works for shadowBlur
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("save()/restore() works for shadowBlur");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+// Test that restore() undoes any modifications
+var old = ctx.shadowBlur;
+ctx.save();
+ctx.shadowBlur = 5;
+ctx.restore();
+_assertSame(ctx.shadowBlur, old, "ctx.shadowBlur", "old");
+
+// Also test that save() doesn't modify the values
+ctx.shadowBlur = 5;
+old = ctx.shadowBlur;
+    // we're not interested in failures caused by get(set(x)) != x (e.g.
+    // from rounding), so compare against 'old' instead of against 5
+ctx.save();
+_assertSame(ctx.shadowBlur, old, "ctx.shadowBlur", "old");
+ctx.restore();
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/the-canvas-state/2d.state.saverestore.shadowColor.html b/testing/web-platform/tests/html/canvas/offscreen/the-canvas-state/2d.state.saverestore.shadowColor.html
new file mode 100644
index 0000000000..5aa0194100
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/the-canvas-state/2d.state.saverestore.shadowColor.html
@@ -0,0 +1,41 @@
+
+
+OffscreenCanvas test: 2d.state.saverestore.shadowColor
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.state.saverestore.shadowColor
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              save()/restore() works for shadowColor
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/the-canvas-state/2d.state.saverestore.shadowColor.worker.js b/testing/web-platform/tests/html/canvas/offscreen/the-canvas-state/2d.state.saverestore.shadowColor.worker.js
new file mode 100644
index 0000000000..b2f9fb9265
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/the-canvas-state/2d.state.saverestore.shadowColor.worker.js
@@ -0,0 +1,37 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.state.saverestore.shadowColor
+// Description:save()/restore() works for shadowColor
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("save()/restore() works for shadowColor");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+// Test that restore() undoes any modifications
+var old = ctx.shadowColor;
+ctx.save();
+ctx.shadowColor = "#ff0000";
+ctx.restore();
+_assertSame(ctx.shadowColor, old, "ctx.shadowColor", "old");
+
+// Also test that save() doesn't modify the values
+ctx.shadowColor = "#ff0000";
+old = ctx.shadowColor;
+    // we're not interested in failures caused by get(set(x)) != x (e.g.
+    // from rounding), so compare against 'old' instead of against "#ff0000"
+ctx.save();
+_assertSame(ctx.shadowColor, old, "ctx.shadowColor", "old");
+ctx.restore();
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/the-canvas-state/2d.state.saverestore.shadowOffsetX.html b/testing/web-platform/tests/html/canvas/offscreen/the-canvas-state/2d.state.saverestore.shadowOffsetX.html
new file mode 100644
index 0000000000..f281234801
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/the-canvas-state/2d.state.saverestore.shadowOffsetX.html
@@ -0,0 +1,41 @@
+
+
+OffscreenCanvas test: 2d.state.saverestore.shadowOffsetX
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.state.saverestore.shadowOffsetX
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              save()/restore() works for shadowOffsetX
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/the-canvas-state/2d.state.saverestore.shadowOffsetX.worker.js b/testing/web-platform/tests/html/canvas/offscreen/the-canvas-state/2d.state.saverestore.shadowOffsetX.worker.js
new file mode 100644
index 0000000000..2711817755
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/the-canvas-state/2d.state.saverestore.shadowOffsetX.worker.js
@@ -0,0 +1,37 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.state.saverestore.shadowOffsetX
+// Description:save()/restore() works for shadowOffsetX
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("save()/restore() works for shadowOffsetX");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+// Test that restore() undoes any modifications
+var old = ctx.shadowOffsetX;
+ctx.save();
+ctx.shadowOffsetX = 5;
+ctx.restore();
+_assertSame(ctx.shadowOffsetX, old, "ctx.shadowOffsetX", "old");
+
+// Also test that save() doesn't modify the values
+ctx.shadowOffsetX = 5;
+old = ctx.shadowOffsetX;
+    // we're not interested in failures caused by get(set(x)) != x (e.g.
+    // from rounding), so compare against 'old' instead of against 5
+ctx.save();
+_assertSame(ctx.shadowOffsetX, old, "ctx.shadowOffsetX", "old");
+ctx.restore();
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/the-canvas-state/2d.state.saverestore.shadowOffsetY.html b/testing/web-platform/tests/html/canvas/offscreen/the-canvas-state/2d.state.saverestore.shadowOffsetY.html
new file mode 100644
index 0000000000..643ce99a24
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/the-canvas-state/2d.state.saverestore.shadowOffsetY.html
@@ -0,0 +1,41 @@
+
+
+OffscreenCanvas test: 2d.state.saverestore.shadowOffsetY
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.state.saverestore.shadowOffsetY
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              save()/restore() works for shadowOffsetY
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/the-canvas-state/2d.state.saverestore.shadowOffsetY.worker.js b/testing/web-platform/tests/html/canvas/offscreen/the-canvas-state/2d.state.saverestore.shadowOffsetY.worker.js
new file mode 100644
index 0000000000..aaa572a4d1
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/the-canvas-state/2d.state.saverestore.shadowOffsetY.worker.js
@@ -0,0 +1,37 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.state.saverestore.shadowOffsetY
+// Description:save()/restore() works for shadowOffsetY
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("save()/restore() works for shadowOffsetY");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+// Test that restore() undoes any modifications
+var old = ctx.shadowOffsetY;
+ctx.save();
+ctx.shadowOffsetY = 5;
+ctx.restore();
+_assertSame(ctx.shadowOffsetY, old, "ctx.shadowOffsetY", "old");
+
+// Also test that save() doesn't modify the values
+ctx.shadowOffsetY = 5;
+old = ctx.shadowOffsetY;
+    // we're not interested in failures caused by get(set(x)) != x (e.g.
+    // from rounding), so compare against 'old' instead of against 5
+ctx.save();
+_assertSame(ctx.shadowOffsetY, old, "ctx.shadowOffsetY", "old");
+ctx.restore();
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/the-canvas-state/2d.state.saverestore.stack.html b/testing/web-platform/tests/html/canvas/offscreen/the-canvas-state/2d.state.saverestore.stack.html
new file mode 100644
index 0000000000..979176804b
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/the-canvas-state/2d.state.saverestore.stack.html
@@ -0,0 +1,36 @@
+
+
+OffscreenCanvas test: 2d.state.saverestore.stack
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.state.saverestore.stack
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              save()/restore() can be nested as a stack
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/the-canvas-state/2d.state.saverestore.stack.worker.js b/testing/web-platform/tests/html/canvas/offscreen/the-canvas-state/2d.state.saverestore.stack.worker.js
new file mode 100644
index 0000000000..e1f078e90d
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/the-canvas-state/2d.state.saverestore.stack.worker.js
@@ -0,0 +1,32 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.state.saverestore.stack
+// Description:save()/restore() can be nested as a stack
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("save()/restore() can be nested as a stack");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+ctx.lineWidth = 1;
+ctx.save();
+ctx.lineWidth = 2;
+ctx.save();
+ctx.lineWidth = 3;
+_assertSame(ctx.lineWidth, 3, "ctx.lineWidth", "3");
+ctx.restore();
+_assertSame(ctx.lineWidth, 2, "ctx.lineWidth", "2");
+ctx.restore();
+_assertSame(ctx.lineWidth, 1, "ctx.lineWidth", "1");
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/the-canvas-state/2d.state.saverestore.stackdepth.html b/testing/web-platform/tests/html/canvas/offscreen/the-canvas-state/2d.state.saverestore.stackdepth.html
new file mode 100644
index 0000000000..53dbc63c2b
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/the-canvas-state/2d.state.saverestore.stackdepth.html
@@ -0,0 +1,37 @@
+
+
+OffscreenCanvas test: 2d.state.saverestore.stackdepth
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.state.saverestore.stackdepth
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              save()/restore() stack depth is not unreasonably limited
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/the-canvas-state/2d.state.saverestore.stackdepth.worker.js b/testing/web-platform/tests/html/canvas/offscreen/the-canvas-state/2d.state.saverestore.stackdepth.worker.js
new file mode 100644
index 0000000000..a485c19471
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/the-canvas-state/2d.state.saverestore.stackdepth.worker.js
@@ -0,0 +1,33 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.state.saverestore.stackdepth
+// Description:save()/restore() stack depth is not unreasonably limited
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("save()/restore() stack depth is not unreasonably limited");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+var limit = 512;
+for (var i = 1; i < limit; ++i)
+{
+    ctx.save();
+    ctx.lineWidth = i;
+}
+for (var i = limit-1; i > 0; --i)
+{
+    _assertSame(ctx.lineWidth, i, "ctx.lineWidth", "i");
+    ctx.restore();
+}
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/the-canvas-state/2d.state.saverestore.strokeStyle.html b/testing/web-platform/tests/html/canvas/offscreen/the-canvas-state/2d.state.saverestore.strokeStyle.html
new file mode 100644
index 0000000000..60963729f4
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/the-canvas-state/2d.state.saverestore.strokeStyle.html
@@ -0,0 +1,41 @@
+
+
+OffscreenCanvas test: 2d.state.saverestore.strokeStyle
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.state.saverestore.strokeStyle
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              save()/restore() works for strokeStyle
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/the-canvas-state/2d.state.saverestore.strokeStyle.worker.js b/testing/web-platform/tests/html/canvas/offscreen/the-canvas-state/2d.state.saverestore.strokeStyle.worker.js
new file mode 100644
index 0000000000..275ba9e072
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/the-canvas-state/2d.state.saverestore.strokeStyle.worker.js
@@ -0,0 +1,37 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.state.saverestore.strokeStyle
+// Description:save()/restore() works for strokeStyle
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("save()/restore() works for strokeStyle");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+// Test that restore() undoes any modifications
+var old = ctx.strokeStyle;
+ctx.save();
+ctx.strokeStyle = "#ff0000";
+ctx.restore();
+_assertSame(ctx.strokeStyle, old, "ctx.strokeStyle", "old");
+
+// Also test that save() doesn't modify the values
+ctx.strokeStyle = "#ff0000";
+old = ctx.strokeStyle;
+    // we're not interested in failures caused by get(set(x)) != x (e.g.
+    // from rounding), so compare against 'old' instead of against "#ff0000"
+ctx.save();
+_assertSame(ctx.strokeStyle, old, "ctx.strokeStyle", "old");
+ctx.restore();
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/the-canvas-state/2d.state.saverestore.transformation.html b/testing/web-platform/tests/html/canvas/offscreen/the-canvas-state/2d.state.saverestore.transformation.html
new file mode 100644
index 0000000000..fff2ead703
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/the-canvas-state/2d.state.saverestore.transformation.html
@@ -0,0 +1,34 @@
+
+
+OffscreenCanvas test: 2d.state.saverestore.transformation
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.state.saverestore.transformation
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              save()/restore() affects the current transformation matrix
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/the-canvas-state/2d.state.saverestore.transformation.worker.js b/testing/web-platform/tests/html/canvas/offscreen/the-canvas-state/2d.state.saverestore.transformation.worker.js
new file mode 100644
index 0000000000..64fb4c4734
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/the-canvas-state/2d.state.saverestore.transformation.worker.js
@@ -0,0 +1,30 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.state.saverestore.transformation
+// Description:save()/restore() affects the current transformation matrix
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("save()/restore() affects the current transformation matrix");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+ctx.fillStyle = '#0f0';
+ctx.fillRect(0, 0, 100, 50);
+ctx.save();
+ctx.translate(200, 0);
+ctx.restore();
+ctx.fillStyle = '#f00';
+ctx.fillRect(-200, 0, 100, 50);
+_assertPixel(canvas, 50,25, 0,255,0,255);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/the-canvas-state/2d.state.saverestore.underflow.html b/testing/web-platform/tests/html/canvas/offscreen/the-canvas-state/2d.state.saverestore.underflow.html
new file mode 100644
index 0000000000..986d966885
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/the-canvas-state/2d.state.saverestore.underflow.html
@@ -0,0 +1,31 @@
+
+
+OffscreenCanvas test: 2d.state.saverestore.underflow
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.state.saverestore.underflow
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              restore() with an empty stack has no effect
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/the-canvas-state/2d.state.saverestore.underflow.worker.js b/testing/web-platform/tests/html/canvas/offscreen/the-canvas-state/2d.state.saverestore.underflow.worker.js
new file mode 100644
index 0000000000..d38cf97417
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/the-canvas-state/2d.state.saverestore.underflow.worker.js
@@ -0,0 +1,27 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.state.saverestore.underflow
+// Description:restore() with an empty stack has no effect
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("restore() with an empty stack has no effect");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+for (var i = 0; i < 16; ++i)
+    ctx.restore();
+ctx.lineWidth = 0.5;
+ctx.restore();
+_assertSame(ctx.lineWidth, 0.5, "ctx.lineWidth", "0.5");
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/2d-getcontext-options.any.js b/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/2d-getcontext-options.any.js
new file mode 100644
index 0000000000..8c4e7cfe96
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/2d-getcontext-options.any.js
@@ -0,0 +1,41 @@
+test(() => {
+  const expected = [
+    "alpha",
+    "colorSpace",
+    "colorSpace toString",
+    "desynchronized",
+    "willReadFrequently",
+  ];
+  var actual = [];
+  const options = {
+    get alpha() {
+      actual.push("alpha");
+      return true;
+    },
+    get willReadFrequently() {
+      actual.push("willReadFrequently");
+      return false;
+    },
+    get desynchronized() {
+      actual.push("desynchronized");
+      return false;
+    },
+    get colorSpace() {
+      actual.push("colorSpace");
+      return {
+        toString() {
+          actual.push("colorSpace toString");
+          return "srgb";
+        }
+      };
+    },
+  };
+
+  const canvas = new OffscreenCanvas(100, 50);
+  const context = canvas.getContext('2d', options);
+  assert_not_equals(context, null, "context");
+  assert_array_equals(actual, expected, "order of operations (creation)");
+  actual = [];
+  assert_equals(canvas.getContext('2d', options), context, "cached context");
+  assert_array_equals(actual, expected, "order of operations (caching)");
+});
diff --git a/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/2d.canvas.readonly.html b/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/2d.canvas.readonly.html
new file mode 100644
index 0000000000..ec6ffe5292
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/2d.canvas.readonly.html
@@ -0,0 +1,31 @@
+
+
+OffscreenCanvas test: 2d.canvas.readonly
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.canvas.readonly
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              canvas is readonly
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/2d.canvas.readonly.worker.js b/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/2d.canvas.readonly.worker.js
new file mode 100644
index 0000000000..8f88efd6dc
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/2d.canvas.readonly.worker.js
@@ -0,0 +1,27 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.canvas.readonly
+// Description:canvas is readonly
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("canvas is readonly");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+var offscreenCanvas2 = new OffscreenCanvas(100, 50);
+var d = ctx.canvas;
+_assertDifferent(offscreenCanvas2, d, "offscreenCanvas2", "d");
+ctx.canvas = offscreenCanvas2;
+_assertSame(ctx.canvas, d, "ctx.canvas", "d");
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/2d.canvas.reference.html b/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/2d.canvas.reference.html
new file mode 100644
index 0000000000..024b1fe7d5
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/2d.canvas.reference.html
@@ -0,0 +1,27 @@
+
+
+OffscreenCanvas test: 2d.canvas.reference
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.canvas.reference
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              canvas refers back to its canvas
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/2d.canvas.reference.worker.js b/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/2d.canvas.reference.worker.js
new file mode 100644
index 0000000000..a80e559053
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/2d.canvas.reference.worker.js
@@ -0,0 +1,23 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.canvas.reference
+// Description:canvas refers back to its canvas
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("canvas refers back to its canvas");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+_assertSame(ctx.canvas, canvas, "ctx.canvas", "canvas");
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/2d.getcontext.exists.html b/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/2d.getcontext.exists.html
new file mode 100644
index 0000000000..55bdf1cc19
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/2d.getcontext.exists.html
@@ -0,0 +1,28 @@
+
+
+OffscreenCanvas test: 2d.getcontext.exists
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.getcontext.exists
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              The 2D context is implemented
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/2d.getcontext.exists.worker.js b/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/2d.getcontext.exists.worker.js
new file mode 100644
index 0000000000..97f8cc745b
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/2d.getcontext.exists.worker.js
@@ -0,0 +1,24 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.getcontext.exists
+// Description:The 2D context is implemented
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("The 2D context is implemented");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+var offscreenCanvas2 = new OffscreenCanvas(100, 50);
+_assertDifferent(offscreenCanvas2.getContext('2d'), null, "offscreenCanvas2.getContext('2d')", "null");
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/2d.getcontext.extraargs.cache.html b/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/2d.getcontext.extraargs.cache.html
new file mode 100644
index 0000000000..a57dbcb655
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/2d.getcontext.extraargs.cache.html
@@ -0,0 +1,32 @@
+
+
+OffscreenCanvas test: 2d.getcontext.extraargs.cache
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.getcontext.extraargs.cache
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              The 2D context doesn't throw with extra getContext arguments (cached)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/2d.getcontext.extraargs.cache.worker.js b/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/2d.getcontext.extraargs.cache.worker.js
new file mode 100644
index 0000000000..df330e301b
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/2d.getcontext.extraargs.cache.worker.js
@@ -0,0 +1,28 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.getcontext.extraargs.cache
+// Description:The 2D context doesn't throw with extra getContext arguments (cached)
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("The 2D context doesn't throw with extra getContext arguments (cached)");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+_assertDifferent(canvas.getContext('2d', false, {}, [], 1, "2"), null, "canvas.getContext('2d', false, {}, [], 1, \"2\")", "null");
+_assertDifferent(canvas.getContext('2d', 123), null, "canvas.getContext('2d', 123)", "null");
+_assertDifferent(canvas.getContext('2d', "test"), null, "canvas.getContext('2d', \"test\")", "null");
+_assertDifferent(canvas.getContext('2d', undefined), null, "canvas.getContext('2d', undefined)", "null");
+_assertDifferent(canvas.getContext('2d', null), null, "canvas.getContext('2d', null)", "null");
+_assertDifferent(canvas.getContext('2d', Symbol.hasInstance), null, "canvas.getContext('2d', Symbol.hasInstance)", "null");
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/2d.getcontext.extraargs.create.html b/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/2d.getcontext.extraargs.create.html
new file mode 100644
index 0000000000..a626318791
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/2d.getcontext.extraargs.create.html
@@ -0,0 +1,32 @@
+
+
+OffscreenCanvas test: 2d.getcontext.extraargs.create
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.getcontext.extraargs.create
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              The 2D context doesn't throw with extra getContext arguments (new context)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/2d.getcontext.extraargs.create.worker.js b/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/2d.getcontext.extraargs.create.worker.js
new file mode 100644
index 0000000000..f34c5a1d0e
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/2d.getcontext.extraargs.create.worker.js
@@ -0,0 +1,28 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.getcontext.extraargs.create
+// Description:The 2D context doesn't throw with extra getContext arguments (new context)
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("The 2D context doesn't throw with extra getContext arguments (new context)");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+_assertDifferent((new OffscreenCanvas(100, 50)).getContext('2d', false, {}, [], 1, "2"), null, "(new OffscreenCanvas(100, 50)).getContext('2d', false, {}, [], 1, \"2\")", "null");
+_assertDifferent((new OffscreenCanvas(100, 50)).getContext('2d', 123), null, "(new OffscreenCanvas(100, 50)).getContext('2d', 123)", "null");
+_assertDifferent((new OffscreenCanvas(100, 50)).getContext('2d', "test"), null, "(new OffscreenCanvas(100, 50)).getContext('2d', \"test\")", "null");
+_assertDifferent((new OffscreenCanvas(100, 50)).getContext('2d', undefined), null, "(new OffscreenCanvas(100, 50)).getContext('2d', undefined)", "null");
+_assertDifferent((new OffscreenCanvas(100, 50)).getContext('2d', null), null, "(new OffscreenCanvas(100, 50)).getContext('2d', null)", "null");
+_assertDifferent((new OffscreenCanvas(100, 50)).getContext('2d', Symbol.hasInstance), null, "(new OffscreenCanvas(100, 50)).getContext('2d', Symbol.hasInstance)", "null");
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/2d.getcontext.shared.html b/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/2d.getcontext.shared.html
new file mode 100644
index 0000000000..6d6162528a
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/2d.getcontext.shared.html
@@ -0,0 +1,31 @@
+
+
+OffscreenCanvas test: 2d.getcontext.shared
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.getcontext.shared
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              getContext('2d') returns objects which share canvas state
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/2d.getcontext.shared.worker.js b/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/2d.getcontext.shared.worker.js
new file mode 100644
index 0000000000..4b8dd52e61
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/2d.getcontext.shared.worker.js
@@ -0,0 +1,27 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.getcontext.shared
+// Description:getContext('2d') returns objects which share canvas state
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("getContext('2d') returns objects which share canvas state");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+var ctx2 = canvas.getContext('2d');
+ctx.fillStyle = '#f00';
+ctx2.fillStyle = '#0f0';
+ctx.fillRect(0, 0, 100, 50);
+_assertPixel(canvas, 50,25, 0,255,0,255);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/2d.getcontext.unique.html b/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/2d.getcontext.unique.html
new file mode 100644
index 0000000000..c7e71da63a
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/2d.getcontext.unique.html
@@ -0,0 +1,28 @@
+
+
+OffscreenCanvas test: 2d.getcontext.unique
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.getcontext.unique
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              getContext('2d') returns the same object
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/2d.getcontext.unique.worker.js b/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/2d.getcontext.unique.worker.js
new file mode 100644
index 0000000000..a2a744df61
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/2d.getcontext.unique.worker.js
@@ -0,0 +1,24 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.getcontext.unique
+// Description:getContext('2d') returns the same object
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("getContext('2d') returns the same object");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+var offscreenCanvas2 = new OffscreenCanvas(100, 50);
+_assertSame(offscreenCanvas2.getContext('2d'), offscreenCanvas2.getContext('2d'), "offscreenCanvas2.getContext('2d')", "offscreenCanvas2.getContext('2d')");
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/context.arguments.missing.html b/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/context.arguments.missing.html
new file mode 100644
index 0000000000..b69f63cdfb
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/context.arguments.missing.html
@@ -0,0 +1,28 @@
+
+
+OffscreenCanvas test: context.arguments.missing
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              context.arguments.missing
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/context.arguments.missing.worker.js b/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/context.arguments.missing.worker.js
new file mode 100644
index 0000000000..f03ca52328
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/context.arguments.missing.worker.js
@@ -0,0 +1,24 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:context.arguments.missing
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+var offscreenCanvas2 = new OffscreenCanvas(100, 50);
+assert_throws_js(TypeError, function() { offscreenCanvas2.getContext(); });
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/context.casesensitive.html b/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/context.casesensitive.html
new file mode 100644
index 0000000000..e7ee0c63ba
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/context.casesensitive.html
@@ -0,0 +1,28 @@
+
+
+OffscreenCanvas test: context.casesensitive
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              context.casesensitive
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Context name "2D" is unrecognised; matching is case sensitive
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/context.casesensitive.worker.js b/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/context.casesensitive.worker.js
new file mode 100644
index 0000000000..265fe959d2
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/context.casesensitive.worker.js
@@ -0,0 +1,24 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:context.casesensitive
+// Description:Context name "2D" is unrecognised; matching is case sensitive
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("Context name \"2D\" is unrecognised; matching is case sensitive");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+var offscreenCanvas2 = new OffscreenCanvas(100, 50);
+assert_throws_js(TypeError, function() { offscreenCanvas2.getContext('2D'); });
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/context.emptystring.html b/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/context.emptystring.html
new file mode 100644
index 0000000000..c8f8943d9e
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/context.emptystring.html
@@ -0,0 +1,28 @@
+
+
+OffscreenCanvas test: context.emptystring
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              context.emptystring
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              getContext with empty string returns null
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/context.emptystring.worker.js b/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/context.emptystring.worker.js
new file mode 100644
index 0000000000..45612d386c
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/context.emptystring.worker.js
@@ -0,0 +1,24 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:context.emptystring
+// Description:getContext with empty string returns null
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("getContext with empty string returns null");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+var offscreenCanvas2 = new OffscreenCanvas(100, 50);
+assert_throws_js(TypeError, function() { offscreenCanvas2.getContext(""); });
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/context.unrecognised.badname.html b/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/context.unrecognised.badname.html
new file mode 100644
index 0000000000..d1b0f2fd17
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/context.unrecognised.badname.html
@@ -0,0 +1,28 @@
+
+
+OffscreenCanvas test: context.unrecognised.badname
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              context.unrecognised.badname
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              getContext with unrecognised context name returns null
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/context.unrecognised.badname.worker.js b/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/context.unrecognised.badname.worker.js
new file mode 100644
index 0000000000..cc50c2bdbd
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/context.unrecognised.badname.worker.js
@@ -0,0 +1,24 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:context.unrecognised.badname
+// Description:getContext with unrecognised context name returns null
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("getContext with unrecognised context name returns null");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+var offscreenCanvas2 = new OffscreenCanvas(100, 50);
+assert_throws_js(TypeError, function() { offscreenCanvas2.getContext('This is not an implemented context in any real browser'); });
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/context.unrecognised.badsuffix.html b/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/context.unrecognised.badsuffix.html
new file mode 100644
index 0000000000..30178af927
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/context.unrecognised.badsuffix.html
@@ -0,0 +1,28 @@
+
+
+OffscreenCanvas test: context.unrecognised.badsuffix
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              context.unrecognised.badsuffix
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Context name "2d" plus a suffix is unrecognised
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/context.unrecognised.badsuffix.worker.js b/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/context.unrecognised.badsuffix.worker.js
new file mode 100644
index 0000000000..7b3d8a09c8
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/context.unrecognised.badsuffix.worker.js
@@ -0,0 +1,24 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:context.unrecognised.badsuffix
+// Description:Context name "2d" plus a suffix is unrecognised
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("Context name \"2d\" plus a suffix is unrecognised");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+var offscreenCanvas2 = new OffscreenCanvas(100, 50);
+assert_throws_js(TypeError, function() { offscreenCanvas2.getContext("2d#"); });
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/context.unrecognised.nullsuffix.html b/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/context.unrecognised.nullsuffix.html
new file mode 100644
index 0000000000..2a22549baa
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/context.unrecognised.nullsuffix.html
@@ -0,0 +1,28 @@
+
+
+OffscreenCanvas test: context.unrecognised.nullsuffix
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              context.unrecognised.nullsuffix
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Context name "2d" plus a "\0" suffix is unrecognised
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/context.unrecognised.nullsuffix.worker.js b/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/context.unrecognised.nullsuffix.worker.js
new file mode 100644
index 0000000000..b6594100f6
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/context.unrecognised.nullsuffix.worker.js
@@ -0,0 +1,24 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:context.unrecognised.nullsuffix
+// Description:Context name "2d" plus a "\0" suffix is unrecognised
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("Context name \"2d\" plus a \"\\0\" suffix is unrecognised");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+var offscreenCanvas2 = new OffscreenCanvas(100, 50);
+assert_throws_js(TypeError, function() { offscreenCanvas2.getContext("2d\0"); });
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/context.unrecognised.unicode.html b/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/context.unrecognised.unicode.html
new file mode 100644
index 0000000000..0c826595fe
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/context.unrecognised.unicode.html
@@ -0,0 +1,28 @@
+
+
+OffscreenCanvas test: context.unrecognised.unicode
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              context.unrecognised.unicode
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Context name which kind of looks like "2d" is unrecognised
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/context.unrecognised.unicode.worker.js b/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/context.unrecognised.unicode.worker.js
new file mode 100644
index 0000000000..cade5a20b5
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/context.unrecognised.unicode.worker.js
@@ -0,0 +1,24 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:context.unrecognised.unicode
+// Description:Context name which kind of looks like "2d" is unrecognised
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("Context name which kind of looks like \"2d\" is unrecognised");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+var offscreenCanvas2 = new OffscreenCanvas(100, 50);
+assert_throws_js(TypeError, function() { offscreenCanvas2.getContext("2\uFF44"); });
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/initial.color.html b/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/initial.color.html
new file mode 100644
index 0000000000..bfdcef7c4f
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/initial.color.html
@@ -0,0 +1,27 @@
+
+
+OffscreenCanvas test: initial.color
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              initial.color
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Initial state is transparent black
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/initial.color.worker.js b/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/initial.color.worker.js
new file mode 100644
index 0000000000..2a6e6e576c
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/initial.color.worker.js
@@ -0,0 +1,23 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:initial.color
+// Description:Initial state is transparent black
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("Initial state is transparent black");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+_assertPixel(canvas, 20,20, 0,0,0,0);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/initial.reset.2dstate.html b/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/initial.reset.2dstate.html
new file mode 100644
index 0000000000..76b76070d4
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/initial.reset.2dstate.html
@@ -0,0 +1,88 @@
+
+
+OffscreenCanvas test: initial.reset.2dstate
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              initial.reset.2dstate
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Resetting the canvas state resets 2D state variables
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/initial.reset.2dstate.worker.js b/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/initial.reset.2dstate.worker.js
new file mode 100644
index 0000000000..273c5f0bd6
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/initial.reset.2dstate.worker.js
@@ -0,0 +1,84 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:initial.reset.2dstate
+// Description:Resetting the canvas state resets 2D state variables
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("Resetting the canvas state resets 2D state variables");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+canvas.width = 100;
+var default_val;
+
+default_val = ctx.strokeStyle;
+ctx.strokeStyle = "#ff0000";
+canvas.width = 100;
+_assertSame(ctx.strokeStyle, default_val, "ctx.strokeStyle", "default_val");
+
+default_val = ctx.fillStyle;
+ctx.fillStyle = "#ff0000";
+canvas.width = 100;
+_assertSame(ctx.fillStyle, default_val, "ctx.fillStyle", "default_val");
+
+default_val = ctx.globalAlpha;
+ctx.globalAlpha = 0.5;
+canvas.width = 100;
+_assertSame(ctx.globalAlpha, default_val, "ctx.globalAlpha", "default_val");
+
+default_val = ctx.lineWidth;
+ctx.lineWidth = 0.5;
+canvas.width = 100;
+_assertSame(ctx.lineWidth, default_val, "ctx.lineWidth", "default_val");
+
+default_val = ctx.lineCap;
+ctx.lineCap = "round";
+canvas.width = 100;
+_assertSame(ctx.lineCap, default_val, "ctx.lineCap", "default_val");
+
+default_val = ctx.lineJoin;
+ctx.lineJoin = "round";
+canvas.width = 100;
+_assertSame(ctx.lineJoin, default_val, "ctx.lineJoin", "default_val");
+
+default_val = ctx.miterLimit;
+ctx.miterLimit = 0.5;
+canvas.width = 100;
+_assertSame(ctx.miterLimit, default_val, "ctx.miterLimit", "default_val");
+
+default_val = ctx.shadowOffsetX;
+ctx.shadowOffsetX = 5;
+canvas.width = 100;
+_assertSame(ctx.shadowOffsetX, default_val, "ctx.shadowOffsetX", "default_val");
+
+default_val = ctx.shadowOffsetY;
+ctx.shadowOffsetY = 5;
+canvas.width = 100;
+_assertSame(ctx.shadowOffsetY, default_val, "ctx.shadowOffsetY", "default_val");
+
+default_val = ctx.shadowBlur;
+ctx.shadowBlur = 5;
+canvas.width = 100;
+_assertSame(ctx.shadowBlur, default_val, "ctx.shadowBlur", "default_val");
+
+default_val = ctx.shadowColor;
+ctx.shadowColor = "#ff0000";
+canvas.width = 100;
+_assertSame(ctx.shadowColor, default_val, "ctx.shadowColor", "default_val");
+
+default_val = ctx.globalCompositeOperation;
+ctx.globalCompositeOperation = "copy";
+canvas.width = 100;
+_assertSame(ctx.globalCompositeOperation, default_val, "ctx.globalCompositeOperation", "default_val");
+
+t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/initial.reset.clip.html b/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/initial.reset.clip.html
new file mode 100644
index 0000000000..87a3e43be4
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/initial.reset.clip.html
@@ -0,0 +1,33 @@
+
+
+OffscreenCanvas test: initial.reset.clip
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              initial.reset.clip
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Resetting the canvas state resets the current clip region
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/initial.reset.clip.worker.js b/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/initial.reset.clip.worker.js
new file mode 100644
index 0000000000..45ee30d080
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/initial.reset.clip.worker.js
@@ -0,0 +1,29 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:initial.reset.clip
+// Description:Resetting the canvas state resets the current clip region
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("Resetting the canvas state resets the current clip region");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+canvas.width = 100;
+ctx.rect(0, 0, 1, 1);
+ctx.clip();
+canvas.width = 100;
+ctx.fillStyle = '#0f0';
+ctx.fillRect(0, 0, 100, 50);
+_assertPixel(canvas, 20,20, 0,255,0,255);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/initial.reset.different.html b/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/initial.reset.different.html
new file mode 100644
index 0000000000..632bc2fd69
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/initial.reset.different.html
@@ -0,0 +1,31 @@
+
+
+OffscreenCanvas test: initial.reset.different
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              initial.reset.different
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Changing size resets canvas to transparent black
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/initial.reset.different.worker.js b/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/initial.reset.different.worker.js
new file mode 100644
index 0000000000..9d840a5963
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/initial.reset.different.worker.js
@@ -0,0 +1,27 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:initial.reset.different
+// Description:Changing size resets canvas to transparent black
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("Changing size resets canvas to transparent black");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+ctx.fillStyle = '#f00';
+ctx.fillRect(0, 0, 50, 50);
+_assertPixel(canvas, 20,20, 255,0,0,255);
+canvas.width = 50;
+_assertPixel(canvas, 20,20, 0,0,0,0);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/initial.reset.gradient.html b/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/initial.reset.gradient.html
new file mode 100644
index 0000000000..96819a07d3
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/initial.reset.gradient.html
@@ -0,0 +1,36 @@
+
+
+OffscreenCanvas test: initial.reset.gradient
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              initial.reset.gradient
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Resetting the canvas state does not invalidate any existing gradients
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/initial.reset.gradient.worker.js b/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/initial.reset.gradient.worker.js
new file mode 100644
index 0000000000..a18d11e86a
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/initial.reset.gradient.worker.js
@@ -0,0 +1,32 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:initial.reset.gradient
+// Description:Resetting the canvas state does not invalidate any existing gradients
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("Resetting the canvas state does not invalidate any existing gradients");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+canvas.width = 50;
+var g = ctx.createLinearGradient(0, 0, 100, 0);
+g.addColorStop(0, '#0f0');
+g.addColorStop(1, '#0f0');
+canvas.width = 100;
+ctx.fillStyle = '#f00';
+ctx.fillRect(0, 0, 100, 50);
+ctx.fillStyle = g;
+ctx.fillRect(0, 0, 100, 50);
+_assertPixel(canvas, 50,25, 0,255,0,255);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/initial.reset.path.html b/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/initial.reset.path.html
new file mode 100644
index 0000000000..3c9667ca5c
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/initial.reset.path.html
@@ -0,0 +1,32 @@
+
+
+OffscreenCanvas test: initial.reset.path
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              initial.reset.path
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Resetting the canvas state resets the current path
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/initial.reset.path.worker.js b/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/initial.reset.path.worker.js
new file mode 100644
index 0000000000..9f34734a58
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/initial.reset.path.worker.js
@@ -0,0 +1,28 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:initial.reset.path
+// Description:Resetting the canvas state resets the current path
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("Resetting the canvas state resets the current path");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+canvas.width = 100;
+ctx.rect(0, 0, 100, 50);
+canvas.width = 100;
+ctx.fillStyle = '#f00';
+ctx.fill();
+_assertPixel(canvas, 20,20, 0,0,0,0);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/initial.reset.pattern.html b/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/initial.reset.pattern.html
new file mode 100644
index 0000000000..3766795ba9
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/initial.reset.pattern.html
@@ -0,0 +1,36 @@
+
+
+OffscreenCanvas test: initial.reset.pattern
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              initial.reset.pattern
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Resetting the canvas state does not invalidate any existing patterns
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/initial.reset.pattern.worker.js b/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/initial.reset.pattern.worker.js
new file mode 100644
index 0000000000..1fe6c01e2d
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/initial.reset.pattern.worker.js
@@ -0,0 +1,32 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:initial.reset.pattern
+// Description:Resetting the canvas state does not invalidate any existing patterns
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("Resetting the canvas state does not invalidate any existing patterns");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+canvas.width = 30;
+ctx.fillStyle = '#0f0';
+ctx.fillRect(0, 0, 30, 50);
+var p = ctx.createPattern(canvas, 'repeat-x');
+canvas.width = 100;
+ctx.fillStyle = '#f00';
+ctx.fillRect(0, 0, 100, 50);
+ctx.fillStyle = p;
+ctx.fillRect(0, 0, 100, 50);
+_assertPixel(canvas, 50,25, 0,255,0,255);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/initial.reset.same.html b/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/initial.reset.same.html
new file mode 100644
index 0000000000..bfcf05013e
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/initial.reset.same.html
@@ -0,0 +1,32 @@
+
+
+OffscreenCanvas test: initial.reset.same
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              initial.reset.same
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Setting size (not changing the value) resets canvas to transparent black
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/initial.reset.same.worker.js b/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/initial.reset.same.worker.js
new file mode 100644
index 0000000000..00db682f70
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/initial.reset.same.worker.js
@@ -0,0 +1,28 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:initial.reset.same
+// Description:Setting size (not changing the value) resets canvas to transparent black
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("Setting size (not changing the value) resets canvas to transparent black");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+canvas.width = 100;
+ctx.fillStyle = '#f00';
+ctx.fillRect(0, 0, 50, 50);
+_assertPixel(canvas, 20,20, 255,0,0,255);
+canvas.width = 100;
+_assertPixel(canvas, 20,20, 0,0,0,0);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/initial.reset.transform.html b/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/initial.reset.transform.html
new file mode 100644
index 0000000000..402b34f9c5
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/initial.reset.transform.html
@@ -0,0 +1,32 @@
+
+
+OffscreenCanvas test: initial.reset.transform
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              initial.reset.transform
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Resetting the canvas state resets the current transformation matrix
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/initial.reset.transform.worker.js b/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/initial.reset.transform.worker.js
new file mode 100644
index 0000000000..3fb80d061f
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/initial.reset.transform.worker.js
@@ -0,0 +1,28 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:initial.reset.transform
+// Description:Resetting the canvas state resets the current transformation matrix
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("Resetting the canvas state resets the current transformation matrix");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+canvas.width = 100;
+ctx.scale(0.1, 0.1);
+canvas.width = 100;
+ctx.fillStyle = '#0f0';
+ctx.fillRect(0, 0, 100, 50);
+_assertPixel(canvas, 20,20, 0,255,0,255);
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/size.attributes.default.html b/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/size.attributes.default.html
new file mode 100644
index 0000000000..6ebd35fbd0
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/size.attributes.default.html
@@ -0,0 +1,28 @@
+
+
+OffscreenCanvas test: size.attributes.default
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              size.attributes.default
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Default width/height when attributes are missing
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/size.attributes.default.worker.js b/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/size.attributes.default.worker.js
new file mode 100644
index 0000000000..c77b8a4929
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/size.attributes.default.worker.js
@@ -0,0 +1,24 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:size.attributes.default
+// Description:Default width/height when attributes are missing
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("Default width/height when attributes are missing");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+_assertSame(canvas.width, 100, "canvas.width", "100");
+_assertSame(canvas.height, 50, "canvas.height", "50");
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/size.attributes.idl.html b/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/size.attributes.idl.html
new file mode 100644
index 0000000000..fda4e92603
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/size.attributes.idl.html
@@ -0,0 +1,42 @@
+
+
+OffscreenCanvas test: size.attributes.idl
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              size.attributes.idl
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Getting/setting width/height IDL attributes
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/size.attributes.idl.set.zero.html b/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/size.attributes.idl.set.zero.html
new file mode 100644
index 0000000000..4bf7b9c41b
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/size.attributes.idl.set.zero.html
@@ -0,0 +1,30 @@
+
+
+OffscreenCanvas test: size.attributes.idl.set.zero
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              size.attributes.idl.set.zero
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Setting width/height IDL attributes to 0
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/size.attributes.idl.set.zero.worker.js b/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/size.attributes.idl.set.zero.worker.js
new file mode 100644
index 0000000000..2ecf19974e
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/size.attributes.idl.set.zero.worker.js
@@ -0,0 +1,26 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:size.attributes.idl.set.zero
+// Description:Setting width/height IDL attributes to 0
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("Setting width/height IDL attributes to 0");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+canvas.width = 0;
+canvas.height = 0;
+_assertSame(canvas.width, 0, "canvas.width", "0");
+_assertSame(canvas.height, 0, "canvas.height", "0");
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/size.attributes.idl.worker.js b/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/size.attributes.idl.worker.js
new file mode 100644
index 0000000000..16350aeacd
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/size.attributes.idl.worker.js
@@ -0,0 +1,38 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:size.attributes.idl
+// Description:Getting/setting width/height IDL attributes
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("Getting/setting width/height IDL attributes");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+canvas.width = "100";
+canvas.height = "100";
+_assertSame(canvas.width, 100, "canvas.width", "100");
+_assertSame(canvas.height, 100, "canvas.height", "100");
+canvas.width = "+1.5e2";
+canvas.height = "0x96";
+_assertSame(canvas.width, 150, "canvas.width", "150");
+_assertSame(canvas.height, 150, "canvas.height", "150");
+canvas.width = 301.999;
+canvas.height = 301.001;
+_assertSame(canvas.width, 301, "canvas.width", "301");
+_assertSame(canvas.height, 301, "canvas.height", "301");
+assert_throws_js(TypeError, function() { canvas.width = "400x"; });
+assert_throws_js(TypeError, function() { canvas.height = "foo"; });
+_assertSame(canvas.width, 301, "canvas.width", "301");
+_assertSame(canvas.height, 301, "canvas.height", "301");
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/size.attributes.parse.decimal.html b/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/size.attributes.parse.decimal.html
new file mode 100644
index 0000000000..a74fe15899
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/size.attributes.parse.decimal.html
@@ -0,0 +1,30 @@
+
+
+OffscreenCanvas test: size.attributes.parse.decimal
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              size.attributes.parse.decimal
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Parsing of non-negative integers
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/size.attributes.parse.decimal.worker.js b/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/size.attributes.parse.decimal.worker.js
new file mode 100644
index 0000000000..7b982e8d87
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/size.attributes.parse.decimal.worker.js
@@ -0,0 +1,26 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:size.attributes.parse.decimal
+// Description:Parsing of non-negative integers
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("Parsing of non-negative integers");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+canvas.width = '100.999';
+canvas.height = '100.999';
+_assertSame(canvas.width, 100, "canvas.width", "100");
+_assertSame(canvas.height, 100, "canvas.height", "100");
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/size.attributes.parse.em.html b/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/size.attributes.parse.em.html
new file mode 100644
index 0000000000..5a8eee2c8e
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/size.attributes.parse.em.html
@@ -0,0 +1,27 @@
+
+
+OffscreenCanvas test: size.attributes.parse.em
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              size.attributes.parse.em
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Parsing of non-negative integers
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/size.attributes.parse.em.worker.js b/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/size.attributes.parse.em.worker.js
new file mode 100644
index 0000000000..a0248d4efc
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/size.attributes.parse.em.worker.js
@@ -0,0 +1,23 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:size.attributes.parse.em
+// Description:Parsing of non-negative integers
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("Parsing of non-negative integers");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+assert_throws_js(TypeError, function() { canvas.width = '100em'; });
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/size.attributes.parse.empty.html b/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/size.attributes.parse.empty.html
new file mode 100644
index 0000000000..eab54b013f
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/size.attributes.parse.empty.html
@@ -0,0 +1,30 @@
+
+
+OffscreenCanvas test: size.attributes.parse.empty
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              size.attributes.parse.empty
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Parsing of non-negative integers
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/size.attributes.parse.empty.worker.js b/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/size.attributes.parse.empty.worker.js
new file mode 100644
index 0000000000..93b6cd6fc2
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/size.attributes.parse.empty.worker.js
@@ -0,0 +1,26 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:size.attributes.parse.empty
+// Description:Parsing of non-negative integers
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("Parsing of non-negative integers");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+canvas.width = '';
+canvas.height = '';
+_assertSame(canvas.width, 0, "canvas.width", "0");
+_assertSame(canvas.height, 0, "canvas.height", "0");
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/size.attributes.parse.exp.html b/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/size.attributes.parse.exp.html
new file mode 100644
index 0000000000..abfddf1858
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/size.attributes.parse.exp.html
@@ -0,0 +1,30 @@
+
+
+OffscreenCanvas test: size.attributes.parse.exp
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              size.attributes.parse.exp
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Parsing of non-negative integers
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/size.attributes.parse.exp.worker.js b/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/size.attributes.parse.exp.worker.js
new file mode 100644
index 0000000000..79fb413f37
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/size.attributes.parse.exp.worker.js
@@ -0,0 +1,26 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:size.attributes.parse.exp
+// Description:Parsing of non-negative integers
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("Parsing of non-negative integers");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+canvas.width = '100e1';
+canvas.height = '100e1';
+_assertSame(canvas.width, 1000.0, "canvas.width", "1000.0");
+_assertSame(canvas.height, 1000.0, "canvas.height", "1000.0");
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/size.attributes.parse.hex.html b/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/size.attributes.parse.hex.html
new file mode 100644
index 0000000000..fba289087f
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/size.attributes.parse.hex.html
@@ -0,0 +1,30 @@
+
+
+OffscreenCanvas test: size.attributes.parse.hex
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              size.attributes.parse.hex
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Parsing of non-negative integers
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/size.attributes.parse.hex.worker.js b/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/size.attributes.parse.hex.worker.js
new file mode 100644
index 0000000000..b178c55646
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/size.attributes.parse.hex.worker.js
@@ -0,0 +1,26 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:size.attributes.parse.hex
+// Description:Parsing of non-negative integers
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("Parsing of non-negative integers");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+canvas.width = '0x100';
+canvas.height = '0x100';
+_assertSame(canvas.width, 256, "canvas.width", "256");
+_assertSame(canvas.height, 256, "canvas.height", "256");
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/size.attributes.parse.junk.html b/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/size.attributes.parse.junk.html
new file mode 100644
index 0000000000..3ffb674b9e
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/size.attributes.parse.junk.html
@@ -0,0 +1,27 @@
+
+
+OffscreenCanvas test: size.attributes.parse.junk
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              size.attributes.parse.junk
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Parsing of non-negative integers
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/size.attributes.parse.junk.worker.js b/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/size.attributes.parse.junk.worker.js
new file mode 100644
index 0000000000..6efd3ae5c2
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/size.attributes.parse.junk.worker.js
@@ -0,0 +1,23 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:size.attributes.parse.junk
+// Description:Parsing of non-negative integers
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("Parsing of non-negative integers");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+assert_throws_js(TypeError, function() { canvas.width = '#!?'; });
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/size.attributes.parse.minus.html b/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/size.attributes.parse.minus.html
new file mode 100644
index 0000000000..56435547ca
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/size.attributes.parse.minus.html
@@ -0,0 +1,27 @@
+
+
+OffscreenCanvas test: size.attributes.parse.minus
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              size.attributes.parse.minus
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Parsing of non-negative integers
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/size.attributes.parse.minus.worker.js b/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/size.attributes.parse.minus.worker.js
new file mode 100644
index 0000000000..a5837528ef
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/size.attributes.parse.minus.worker.js
@@ -0,0 +1,23 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:size.attributes.parse.minus
+// Description:Parsing of non-negative integers
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("Parsing of non-negative integers");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+assert_throws_js(TypeError, function() { canvas.width = '-100'; });
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/size.attributes.parse.octal.html b/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/size.attributes.parse.octal.html
new file mode 100644
index 0000000000..d452217015
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/size.attributes.parse.octal.html
@@ -0,0 +1,30 @@
+
+
+OffscreenCanvas test: size.attributes.parse.octal
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              size.attributes.parse.octal
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Parsing of non-negative integers
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/size.attributes.parse.octal.worker.js b/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/size.attributes.parse.octal.worker.js
new file mode 100644
index 0000000000..23f228e368
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/size.attributes.parse.octal.worker.js
@@ -0,0 +1,26 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:size.attributes.parse.octal
+// Description:Parsing of non-negative integers
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("Parsing of non-negative integers");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+canvas.width = '0100';
+canvas.height = '0100';
+_assertSame(canvas.width, 100, "canvas.width", "100");
+_assertSame(canvas.height, 100, "canvas.height", "100");
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/size.attributes.parse.onlyspace.html b/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/size.attributes.parse.onlyspace.html
new file mode 100644
index 0000000000..4164123fd1
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/size.attributes.parse.onlyspace.html
@@ -0,0 +1,30 @@
+
+
+OffscreenCanvas test: size.attributes.parse.onlyspace
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              size.attributes.parse.onlyspace
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Parsing of non-negative integers
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/size.attributes.parse.onlyspace.worker.js b/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/size.attributes.parse.onlyspace.worker.js
new file mode 100644
index 0000000000..a4b86624f7
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/size.attributes.parse.onlyspace.worker.js
@@ -0,0 +1,26 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:size.attributes.parse.onlyspace
+// Description:Parsing of non-negative integers
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("Parsing of non-negative integers");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+canvas.width = '  ';
+canvas.height = '  ';
+_assertSame(canvas.width, 0, "canvas.width", "0");
+_assertSame(canvas.height, 0, "canvas.height", "0");
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/size.attributes.parse.percent.html b/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/size.attributes.parse.percent.html
new file mode 100644
index 0000000000..d6288e996e
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/size.attributes.parse.percent.html
@@ -0,0 +1,27 @@
+
+
+OffscreenCanvas test: size.attributes.parse.percent
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              size.attributes.parse.percent
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Parsing of non-negative integers
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/size.attributes.parse.percent.worker.js b/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/size.attributes.parse.percent.worker.js
new file mode 100644
index 0000000000..e07fa60407
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/size.attributes.parse.percent.worker.js
@@ -0,0 +1,23 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:size.attributes.parse.percent
+// Description:Parsing of non-negative integers
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("Parsing of non-negative integers");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+assert_throws_js(TypeError, function() { canvas.width = '100%'; });
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/size.attributes.parse.plus.html b/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/size.attributes.parse.plus.html
new file mode 100644
index 0000000000..79d531f06e
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/size.attributes.parse.plus.html
@@ -0,0 +1,30 @@
+
+
+OffscreenCanvas test: size.attributes.parse.plus
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              size.attributes.parse.plus
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Parsing of non-negative integers
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/size.attributes.parse.plus.worker.js b/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/size.attributes.parse.plus.worker.js
new file mode 100644
index 0000000000..240a6bd785
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/size.attributes.parse.plus.worker.js
@@ -0,0 +1,26 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:size.attributes.parse.plus
+// Description:Parsing of non-negative integers
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("Parsing of non-negative integers");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+canvas.width = '+100';
+canvas.height = '+100';
+_assertSame(canvas.width, 100, "canvas.width", "100");
+_assertSame(canvas.height, 100, "canvas.height", "100");
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/size.attributes.parse.space.html b/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/size.attributes.parse.space.html
new file mode 100644
index 0000000000..695afa5407
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/size.attributes.parse.space.html
@@ -0,0 +1,30 @@
+
+
+OffscreenCanvas test: size.attributes.parse.space
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              size.attributes.parse.space
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Parsing of non-negative integers
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/size.attributes.parse.space.worker.js b/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/size.attributes.parse.space.worker.js
new file mode 100644
index 0000000000..29930209bf
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/size.attributes.parse.space.worker.js
@@ -0,0 +1,26 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:size.attributes.parse.space
+// Description:Parsing of non-negative integers
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("Parsing of non-negative integers");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+canvas.width = '  100';
+canvas.height = '  100';
+_assertSame(canvas.width, 100, "canvas.width", "100");
+_assertSame(canvas.height, 100, "canvas.height", "100");
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/size.attributes.parse.trailingjunk.html b/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/size.attributes.parse.trailingjunk.html
new file mode 100644
index 0000000000..fff231fda7
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/size.attributes.parse.trailingjunk.html
@@ -0,0 +1,27 @@
+
+
+OffscreenCanvas test: size.attributes.parse.trailingjunk
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              size.attributes.parse.trailingjunk
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Parsing of non-negative integers
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/size.attributes.parse.trailingjunk.worker.js b/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/size.attributes.parse.trailingjunk.worker.js
new file mode 100644
index 0000000000..f8d916c853
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/size.attributes.parse.trailingjunk.worker.js
@@ -0,0 +1,23 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:size.attributes.parse.trailingjunk
+// Description:Parsing of non-negative integers
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("Parsing of non-negative integers");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+assert_throws_js(TypeError, function() { canvas.width = '100#!?'; });
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/size.attributes.parse.whitespace.html b/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/size.attributes.parse.whitespace.html
new file mode 100644
index 0000000000..b7f0c4b931
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/size.attributes.parse.whitespace.html
@@ -0,0 +1,30 @@
+
+
+OffscreenCanvas test: size.attributes.parse.whitespace
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              size.attributes.parse.whitespace
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Parsing of non-negative integers
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/size.attributes.parse.whitespace.worker.js b/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/size.attributes.parse.whitespace.worker.js
new file mode 100644
index 0000000000..ea38398145
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/size.attributes.parse.whitespace.worker.js
@@ -0,0 +1,26 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:size.attributes.parse.whitespace
+// Description:Parsing of non-negative integers
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("Parsing of non-negative integers");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+canvas.width = '	100';
+canvas.height = '	100';
+_assertSame(canvas.width, 100, "canvas.width", "100");
+_assertSame(canvas.height, 100, "canvas.height", "100");
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/size.attributes.parse.zero.html b/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/size.attributes.parse.zero.html
new file mode 100644
index 0000000000..9a84c95598
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/size.attributes.parse.zero.html
@@ -0,0 +1,30 @@
+
+
+OffscreenCanvas test: size.attributes.parse.zero
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              size.attributes.parse.zero
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Parsing of non-negative integers
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/size.attributes.parse.zero.worker.js b/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/size.attributes.parse.zero.worker.js
new file mode 100644
index 0000000000..4d97a96b42
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/size.attributes.parse.zero.worker.js
@@ -0,0 +1,26 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:size.attributes.parse.zero
+// Description:Parsing of non-negative integers
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("Parsing of non-negative integers");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+canvas.width = '0';
+canvas.height = '0';
+_assertSame(canvas.width, 0, "canvas.width", "0");
+_assertSame(canvas.height, 0, "canvas.height", "0");
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/size.attributes.reflect.setidl.html b/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/size.attributes.reflect.setidl.html
new file mode 100644
index 0000000000..968dad9dda
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/size.attributes.reflect.setidl.html
@@ -0,0 +1,30 @@
+
+
+OffscreenCanvas test: size.attributes.reflect.setidl
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              size.attributes.reflect.setidl
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Setting IDL attributes updates IDL and content attributes
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/size.attributes.reflect.setidl.worker.js b/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/size.attributes.reflect.setidl.worker.js
new file mode 100644
index 0000000000..3f8050d549
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/size.attributes.reflect.setidl.worker.js
@@ -0,0 +1,26 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:size.attributes.reflect.setidl
+// Description:Setting IDL attributes updates IDL and content attributes
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("Setting IDL attributes updates IDL and content attributes");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+canvas.width = 120;
+canvas.height = 60;
+_assertSame(canvas.width, 120, "canvas.width", "120");
+_assertSame(canvas.height, 60, "canvas.height", "60");
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/size.attributes.reflect.setidlzero.html b/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/size.attributes.reflect.setidlzero.html
new file mode 100644
index 0000000000..5f31f696cf
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/size.attributes.reflect.setidlzero.html
@@ -0,0 +1,30 @@
+
+
+OffscreenCanvas test: size.attributes.reflect.setidlzero
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              size.attributes.reflect.setidlzero
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Setting IDL attributes to 0 updates IDL and content attributes
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/size.attributes.reflect.setidlzero.worker.js b/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/size.attributes.reflect.setidlzero.worker.js
new file mode 100644
index 0000000000..4ace1f5edb
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/size.attributes.reflect.setidlzero.worker.js
@@ -0,0 +1,26 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:size.attributes.reflect.setidlzero
+// Description:Setting IDL attributes to 0 updates IDL and content attributes
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("Setting IDL attributes to 0 updates IDL and content attributes");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+canvas.width = 0;
+canvas.height = 0;
+_assertSame(canvas.width, 0, "canvas.width", "0");
+_assertSame(canvas.height, 0, "canvas.height", "0");
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/size.large.html b/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/size.large.html
new file mode 100644
index 0000000000..9f41e2e23a
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/size.large.html
@@ -0,0 +1,31 @@
+
+
+OffscreenCanvas test: size.large
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              size.large
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Not sure how reasonable this is, but the spec doesn't say there's an upper limit on the size.
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/size.large.worker.js b/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/size.large.worker.js
new file mode 100644
index 0000000000..b20ff54969
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/the-offscreen-canvas/size.large.worker.js
@@ -0,0 +1,27 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:size.large
+// Description:
+// Note:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Not sure how reasonable this is, but the spec doesn't say there's an upper limit on the size.
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+var n = 2147483647; // 2^31 - 1, which should be supported by any sensible definition of "long"
+canvas.width = n;
+canvas.height = n;
+_assertSame(canvas.width, n, "canvas.width", "n");
+_assertSame(canvas.height, n, "canvas.height", "n");
+t.done();
+
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/transformations/2d.transformation.order.html b/testing/web-platform/tests/html/canvas/offscreen/transformations/2d.transformation.order.html
new file mode 100644
index 0000000000..d438c27433
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/transformations/2d.transformation.order.html
@@ -0,0 +1,34 @@
+
+
+OffscreenCanvas test: 2d.transformation.order
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.transformation.order
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Transformations are applied in the right order
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/transformations/2d.transformation.order.worker.js b/testing/web-platform/tests/html/canvas/offscreen/transformations/2d.transformation.order.worker.js
new file mode 100644
index 0000000000..219cbe8421
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/transformations/2d.transformation.order.worker.js
@@ -0,0 +1,29 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.transformation.order
+// Description:Transformations are applied in the right order
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("Transformations are applied in the right order");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#f00';
+  ctx.fillRect(0, 0, 100, 50);
+
+  ctx.scale(2, 1);
+  ctx.rotate(Math.PI / 2);
+  ctx.fillStyle = '#0f0';
+  ctx.fillRect(0, -50, 50, 50);
+  _assertPixel(canvas, 75,25, 0,255,0,255);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/transformations/2d.transformation.rotate.direction.html b/testing/web-platform/tests/html/canvas/offscreen/transformations/2d.transformation.rotate.direction.html
new file mode 100644
index 0000000000..fb0f295062
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/transformations/2d.transformation.rotate.direction.html
@@ -0,0 +1,33 @@
+
+
+OffscreenCanvas test: 2d.transformation.rotate.direction
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.transformation.rotate.direction
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              rotate() is clockwise
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/transformations/2d.transformation.rotate.direction.worker.js b/testing/web-platform/tests/html/canvas/offscreen/transformations/2d.transformation.rotate.direction.worker.js
new file mode 100644
index 0000000000..b92b7d8368
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/transformations/2d.transformation.rotate.direction.worker.js
@@ -0,0 +1,28 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.transformation.rotate.direction
+// Description:rotate() is clockwise
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("rotate() is clockwise");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#f00';
+  ctx.fillRect(0, 0, 100, 50);
+
+  ctx.rotate(Math.PI / 2);
+  ctx.fillStyle = '#0f0';
+  ctx.fillRect(0, -100, 50, 100);
+  _assertPixel(canvas, 50,25, 0,255,0,255);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/transformations/2d.transformation.rotate.nonfinite.html b/testing/web-platform/tests/html/canvas/offscreen/transformations/2d.transformation.rotate.nonfinite.html
new file mode 100644
index 0000000000..dbde38370d
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/transformations/2d.transformation.rotate.nonfinite.html
@@ -0,0 +1,38 @@
+
+
+OffscreenCanvas test: 2d.transformation.rotate.nonfinite
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.transformation.rotate.nonfinite
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              rotate() with Infinity/NaN is ignored
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/transformations/2d.transformation.rotate.nonfinite.worker.js b/testing/web-platform/tests/html/canvas/offscreen/transformations/2d.transformation.rotate.nonfinite.worker.js
new file mode 100644
index 0000000000..52b6605e45
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/transformations/2d.transformation.rotate.nonfinite.worker.js
@@ -0,0 +1,33 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.transformation.rotate.nonfinite
+// Description:rotate() with Infinity/NaN is ignored
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("rotate() with Infinity/NaN is ignored");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#f00';
+  ctx.fillRect(0, 0, 100, 50);
+
+  ctx.translate(100, 10);
+  ctx.rotate(Infinity);
+  ctx.rotate(-Infinity);
+  ctx.rotate(NaN);
+
+  ctx.fillStyle = '#0f0';
+  ctx.fillRect(-100, -10, 100, 50);
+
+  _assertPixel(canvas, 50,25, 0,255,0,255);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/transformations/2d.transformation.rotate.radians.html b/testing/web-platform/tests/html/canvas/offscreen/transformations/2d.transformation.rotate.radians.html
new file mode 100644
index 0000000000..28006028ca
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/transformations/2d.transformation.rotate.radians.html
@@ -0,0 +1,33 @@
+
+
+OffscreenCanvas test: 2d.transformation.rotate.radians
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.transformation.rotate.radians
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              rotate() uses radians
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/transformations/2d.transformation.rotate.radians.worker.js b/testing/web-platform/tests/html/canvas/offscreen/transformations/2d.transformation.rotate.radians.worker.js
new file mode 100644
index 0000000000..0851691156
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/transformations/2d.transformation.rotate.radians.worker.js
@@ -0,0 +1,28 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.transformation.rotate.radians
+// Description:rotate() uses radians
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("rotate() uses radians");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#f00';
+  ctx.fillRect(0, 0, 100, 50);
+
+  ctx.rotate(Math.PI); // should fail obviously if this is 3.1 degrees
+  ctx.fillStyle = '#0f0';
+  ctx.fillRect(-100, -50, 100, 50);
+  _assertPixel(canvas, 50,25, 0,255,0,255);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/transformations/2d.transformation.rotate.wrap.html b/testing/web-platform/tests/html/canvas/offscreen/transformations/2d.transformation.rotate.wrap.html
new file mode 100644
index 0000000000..aea14ceddf
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/transformations/2d.transformation.rotate.wrap.html
@@ -0,0 +1,38 @@
+
+
+OffscreenCanvas test: 2d.transformation.rotate.wrap
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.transformation.rotate.wrap
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              rotate() wraps large positive values correctly
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/transformations/2d.transformation.rotate.wrap.worker.js b/testing/web-platform/tests/html/canvas/offscreen/transformations/2d.transformation.rotate.wrap.worker.js
new file mode 100644
index 0000000000..4d0c2f5b5d
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/transformations/2d.transformation.rotate.wrap.worker.js
@@ -0,0 +1,33 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.transformation.rotate.wrap
+// Description:rotate() wraps large positive values correctly
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("rotate() wraps large positive values correctly");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#f00';
+  ctx.fillRect(0, 0, 100, 50);
+
+  ctx.rotate(Math.PI * (1 + 4096)); // == pi (mod 2*pi)
+  // We need about pi +/- 0.001 in order to get correct-looking results
+  // 32-bit floats can store pi*4097 with precision 2^-10, so that should
+  // be safe enough on reasonable implementations
+  ctx.fillStyle = '#0f0';
+  ctx.fillRect(-100, -50, 100, 50);
+  _assertPixel(canvas, 50,25, 0,255,0,255);
+  _assertPixel(canvas, 98,2, 0,255,0,255);
+  _assertPixel(canvas, 98,47, 0,255,0,255);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/transformations/2d.transformation.rotate.wrapnegative.html b/testing/web-platform/tests/html/canvas/offscreen/transformations/2d.transformation.rotate.wrapnegative.html
new file mode 100644
index 0000000000..7363007a4d
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/transformations/2d.transformation.rotate.wrapnegative.html
@@ -0,0 +1,35 @@
+
+
+OffscreenCanvas test: 2d.transformation.rotate.wrapnegative
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.transformation.rotate.wrapnegative
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              rotate() wraps large negative values correctly
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/transformations/2d.transformation.rotate.wrapnegative.worker.js b/testing/web-platform/tests/html/canvas/offscreen/transformations/2d.transformation.rotate.wrapnegative.worker.js
new file mode 100644
index 0000000000..932ecf6512
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/transformations/2d.transformation.rotate.wrapnegative.worker.js
@@ -0,0 +1,30 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.transformation.rotate.wrapnegative
+// Description:rotate() wraps large negative values correctly
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("rotate() wraps large negative values correctly");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#f00';
+  ctx.fillRect(0, 0, 100, 50);
+
+  ctx.rotate(-Math.PI * (1 + 4096));
+  ctx.fillStyle = '#0f0';
+  ctx.fillRect(-100, -50, 100, 50);
+  _assertPixel(canvas, 50,25, 0,255,0,255);
+  _assertPixel(canvas, 98,2, 0,255,0,255);
+  _assertPixel(canvas, 98,47, 0,255,0,255);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/transformations/2d.transformation.rotate.zero.html b/testing/web-platform/tests/html/canvas/offscreen/transformations/2d.transformation.rotate.zero.html
new file mode 100644
index 0000000000..965d0e0768
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/transformations/2d.transformation.rotate.zero.html
@@ -0,0 +1,33 @@
+
+
+OffscreenCanvas test: 2d.transformation.rotate.zero
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.transformation.rotate.zero
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              rotate() by 0 does nothing
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/transformations/2d.transformation.rotate.zero.worker.js b/testing/web-platform/tests/html/canvas/offscreen/transformations/2d.transformation.rotate.zero.worker.js
new file mode 100644
index 0000000000..659c9fd7a0
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/transformations/2d.transformation.rotate.zero.worker.js
@@ -0,0 +1,28 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.transformation.rotate.zero
+// Description:rotate() by 0 does nothing
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("rotate() by 0 does nothing");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#f00';
+  ctx.fillRect(0, 0, 100, 50);
+
+  ctx.rotate(0);
+  ctx.fillStyle = '#0f0';
+  ctx.fillRect(0, 0, 100, 50);
+  _assertPixel(canvas, 50,25, 0,255,0,255);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/transformations/2d.transformation.scale.basic.html b/testing/web-platform/tests/html/canvas/offscreen/transformations/2d.transformation.scale.basic.html
new file mode 100644
index 0000000000..d4063f7129
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/transformations/2d.transformation.scale.basic.html
@@ -0,0 +1,33 @@
+
+
+OffscreenCanvas test: 2d.transformation.scale.basic
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.transformation.scale.basic
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              scale() works
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/transformations/2d.transformation.scale.basic.worker.js b/testing/web-platform/tests/html/canvas/offscreen/transformations/2d.transformation.scale.basic.worker.js
new file mode 100644
index 0000000000..5e79daf3f4
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/transformations/2d.transformation.scale.basic.worker.js
@@ -0,0 +1,28 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.transformation.scale.basic
+// Description:scale() works
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("scale() works");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#f00';
+  ctx.fillRect(0, 0, 100, 50);
+
+  ctx.scale(2, 4);
+  ctx.fillStyle = '#0f0';
+  ctx.fillRect(0, 0, 50, 12.5);
+  _assertPixel(canvas, 90,40, 0,255,0,255);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/transformations/2d.transformation.scale.large.html b/testing/web-platform/tests/html/canvas/offscreen/transformations/2d.transformation.scale.large.html
new file mode 100644
index 0000000000..ae8f954a71
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/transformations/2d.transformation.scale.large.html
@@ -0,0 +1,33 @@
+
+
+OffscreenCanvas test: 2d.transformation.scale.large
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.transformation.scale.large
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              scale() with large scale factors works
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Not really that large at all, but it hits the limits in Firefox.
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/transformations/2d.transformation.scale.large.worker.js b/testing/web-platform/tests/html/canvas/offscreen/transformations/2d.transformation.scale.large.worker.js
new file mode 100644
index 0000000000..6d71627728
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/transformations/2d.transformation.scale.large.worker.js
@@ -0,0 +1,28 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.transformation.scale.large
+// Description:scale() with large scale factors works
+// Note:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Not really that large at all, but it hits the limits in Firefox.
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("scale() with large scale factors works");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#f00';
+  ctx.fillRect(0, 0, 100, 50);
+
+  ctx.scale(1e5, 1e5);
+  ctx.fillStyle = '#0f0';
+  ctx.fillRect(0, 0, 1, 1);
+  _assertPixel(canvas, 50,25, 0,255,0,255);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/transformations/2d.transformation.scale.multiple.html b/testing/web-platform/tests/html/canvas/offscreen/transformations/2d.transformation.scale.multiple.html
new file mode 100644
index 0000000000..6a899d1dd6
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/transformations/2d.transformation.scale.multiple.html
@@ -0,0 +1,34 @@
+
+
+OffscreenCanvas test: 2d.transformation.scale.multiple
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.transformation.scale.multiple
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Multiple scale()s combine
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/transformations/2d.transformation.scale.multiple.worker.js b/testing/web-platform/tests/html/canvas/offscreen/transformations/2d.transformation.scale.multiple.worker.js
new file mode 100644
index 0000000000..921e95aa72
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/transformations/2d.transformation.scale.multiple.worker.js
@@ -0,0 +1,29 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.transformation.scale.multiple
+// Description:Multiple scale()s combine
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("Multiple scale()s combine");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#f00';
+  ctx.fillRect(0, 0, 100, 50);
+
+  ctx.scale(Math.sqrt(2), Math.sqrt(2));
+  ctx.scale(Math.sqrt(2), Math.sqrt(2));
+  ctx.fillStyle = '#0f0';
+  ctx.fillRect(0, 0, 50, 25);
+  _assertPixel(canvas, 90,40, 0,255,0,255);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/transformations/2d.transformation.scale.negative.html b/testing/web-platform/tests/html/canvas/offscreen/transformations/2d.transformation.scale.negative.html
new file mode 100644
index 0000000000..68c5780332
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/transformations/2d.transformation.scale.negative.html
@@ -0,0 +1,42 @@
+
+
+OffscreenCanvas test: 2d.transformation.scale.negative
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.transformation.scale.negative
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              scale() with negative scale factors works
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/transformations/2d.transformation.scale.negative.worker.js b/testing/web-platform/tests/html/canvas/offscreen/transformations/2d.transformation.scale.negative.worker.js
new file mode 100644
index 0000000000..cb0f01c618
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/transformations/2d.transformation.scale.negative.worker.js
@@ -0,0 +1,37 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.transformation.scale.negative
+// Description:scale() with negative scale factors works
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("scale() with negative scale factors works");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#f00';
+  ctx.fillRect(0, 0, 100, 50);
+
+  ctx.save();
+  ctx.scale(-1, 1);
+  ctx.fillStyle = '#0f0';
+  ctx.fillRect(-50, 0, 50, 50);
+  ctx.restore();
+
+  ctx.save();
+  ctx.scale(1, -1);
+  ctx.fillStyle = '#0f0';
+  ctx.fillRect(50, -50, 50, 50);
+  ctx.restore();
+  _assertPixel(canvas, 25,25, 0,255,0,255);
+  _assertPixel(canvas, 75,25, 0,255,0,255);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/transformations/2d.transformation.scale.nonfinite.html b/testing/web-platform/tests/html/canvas/offscreen/transformations/2d.transformation.scale.nonfinite.html
new file mode 100644
index 0000000000..5fd95629c9
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/transformations/2d.transformation.scale.nonfinite.html
@@ -0,0 +1,42 @@
+
+
+OffscreenCanvas test: 2d.transformation.scale.nonfinite
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.transformation.scale.nonfinite
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              scale() with Infinity/NaN is ignored
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/transformations/2d.transformation.scale.nonfinite.worker.js b/testing/web-platform/tests/html/canvas/offscreen/transformations/2d.transformation.scale.nonfinite.worker.js
new file mode 100644
index 0000000000..35f9c90e71
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/transformations/2d.transformation.scale.nonfinite.worker.js
@@ -0,0 +1,37 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.transformation.scale.nonfinite
+// Description:scale() with Infinity/NaN is ignored
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("scale() with Infinity/NaN is ignored");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#f00';
+  ctx.fillRect(0, 0, 100, 50);
+
+  ctx.translate(100, 10);
+  ctx.scale(Infinity, 0.1);
+  ctx.scale(-Infinity, 0.1);
+  ctx.scale(NaN, 0.1);
+  ctx.scale(0.1, Infinity);
+  ctx.scale(0.1, -Infinity);
+  ctx.scale(0.1, NaN);
+  ctx.scale(Infinity, Infinity);
+
+  ctx.fillStyle = '#0f0';
+  ctx.fillRect(-100, -10, 100, 50);
+
+  _assertPixel(canvas, 50,25, 0,255,0,255);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/transformations/2d.transformation.scale.zero.html b/testing/web-platform/tests/html/canvas/offscreen/transformations/2d.transformation.scale.zero.html
new file mode 100644
index 0000000000..b4269bd140
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/transformations/2d.transformation.scale.zero.html
@@ -0,0 +1,44 @@
+
+
+OffscreenCanvas test: 2d.transformation.scale.zero
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.transformation.scale.zero
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              scale() with a scale factor of zero works
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/transformations/2d.transformation.scale.zero.worker.js b/testing/web-platform/tests/html/canvas/offscreen/transformations/2d.transformation.scale.zero.worker.js
new file mode 100644
index 0000000000..9e90127cfe
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/transformations/2d.transformation.scale.zero.worker.js
@@ -0,0 +1,39 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.transformation.scale.zero
+// Description:scale() with a scale factor of zero works
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("scale() with a scale factor of zero works");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#0f0';
+  ctx.fillRect(0, 0, 100, 50);
+
+  ctx.save();
+  ctx.translate(50, 0);
+  ctx.scale(0, 1);
+  ctx.fillStyle = '#f00';
+  ctx.fillRect(0, 0, 100, 50);
+  ctx.restore();
+
+  ctx.save();
+  ctx.translate(0, 25);
+  ctx.scale(1, 0);
+  ctx.fillStyle = '#f00';
+  ctx.fillRect(0, 0, 100, 50);
+  ctx.restore();
+
+  _assertPixel(canvas, 50,25, 0,255,0,255);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/transformations/2d.transformation.setTransform.multiple.html b/testing/web-platform/tests/html/canvas/offscreen/transformations/2d.transformation.setTransform.multiple.html
new file mode 100644
index 0000000000..0395c561bf
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/transformations/2d.transformation.setTransform.multiple.html
@@ -0,0 +1,35 @@
+
+
+OffscreenCanvas test: 2d.transformation.setTransform.multiple
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.transformation.setTransform.multiple
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/transformations/2d.transformation.setTransform.multiple.worker.js b/testing/web-platform/tests/html/canvas/offscreen/transformations/2d.transformation.setTransform.multiple.worker.js
new file mode 100644
index 0000000000..e3e6daf878
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/transformations/2d.transformation.setTransform.multiple.worker.js
@@ -0,0 +1,30 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.transformation.setTransform.multiple
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#f00';
+  ctx.fillRect(0, 0, 100, 50);
+
+  ctx.setTransform(1/2,0, 0,1/2, 0,0);
+  ctx.setTransform();
+  ctx.setTransform(2,0, 0,2, 0,0);
+  ctx.fillStyle = '#0f0';
+  ctx.fillRect(0, 0, 50, 25);
+  _assertPixel(canvas, 75,35, 0,255,0,255);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/transformations/2d.transformation.setTransform.nonfinite.html b/testing/web-platform/tests/html/canvas/offscreen/transformations/2d.transformation.setTransform.nonfinite.html
new file mode 100644
index 0000000000..474b20a10b
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/transformations/2d.transformation.setTransform.nonfinite.html
@@ -0,0 +1,110 @@
+
+
+OffscreenCanvas test: 2d.transformation.setTransform.nonfinite
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.transformation.setTransform.nonfinite
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              setTransform() with Infinity/NaN is ignored
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/transformations/2d.transformation.setTransform.nonfinite.worker.js b/testing/web-platform/tests/html/canvas/offscreen/transformations/2d.transformation.setTransform.nonfinite.worker.js
new file mode 100644
index 0000000000..d99ea52dea
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/transformations/2d.transformation.setTransform.nonfinite.worker.js
@@ -0,0 +1,105 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.transformation.setTransform.nonfinite
+// Description:setTransform() with Infinity/NaN is ignored
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("setTransform() with Infinity/NaN is ignored");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#f00';
+  ctx.fillRect(0, 0, 100, 50);
+
+  ctx.translate(100, 10);
+  ctx.setTransform(Infinity, 0, 0, 0, 0, 0);
+  ctx.setTransform(-Infinity, 0, 0, 0, 0, 0);
+  ctx.setTransform(NaN, 0, 0, 0, 0, 0);
+  ctx.setTransform(0, Infinity, 0, 0, 0, 0);
+  ctx.setTransform(0, -Infinity, 0, 0, 0, 0);
+  ctx.setTransform(0, NaN, 0, 0, 0, 0);
+  ctx.setTransform(0, 0, Infinity, 0, 0, 0);
+  ctx.setTransform(0, 0, -Infinity, 0, 0, 0);
+  ctx.setTransform(0, 0, NaN, 0, 0, 0);
+  ctx.setTransform(0, 0, 0, Infinity, 0, 0);
+  ctx.setTransform(0, 0, 0, -Infinity, 0, 0);
+  ctx.setTransform(0, 0, 0, NaN, 0, 0);
+  ctx.setTransform(0, 0, 0, 0, Infinity, 0);
+  ctx.setTransform(0, 0, 0, 0, -Infinity, 0);
+  ctx.setTransform(0, 0, 0, 0, NaN, 0);
+  ctx.setTransform(0, 0, 0, 0, 0, Infinity);
+  ctx.setTransform(0, 0, 0, 0, 0, -Infinity);
+  ctx.setTransform(0, 0, 0, 0, 0, NaN);
+  ctx.setTransform(Infinity, Infinity, 0, 0, 0, 0);
+  ctx.setTransform(Infinity, Infinity, Infinity, 0, 0, 0);
+  ctx.setTransform(Infinity, Infinity, Infinity, Infinity, 0, 0);
+  ctx.setTransform(Infinity, Infinity, Infinity, Infinity, Infinity, 0);
+  ctx.setTransform(Infinity, Infinity, Infinity, Infinity, Infinity, Infinity);
+  ctx.setTransform(Infinity, Infinity, Infinity, Infinity, 0, Infinity);
+  ctx.setTransform(Infinity, Infinity, Infinity, 0, Infinity, 0);
+  ctx.setTransform(Infinity, Infinity, Infinity, 0, Infinity, Infinity);
+  ctx.setTransform(Infinity, Infinity, Infinity, 0, 0, Infinity);
+  ctx.setTransform(Infinity, Infinity, 0, Infinity, 0, 0);
+  ctx.setTransform(Infinity, Infinity, 0, Infinity, Infinity, 0);
+  ctx.setTransform(Infinity, Infinity, 0, Infinity, Infinity, Infinity);
+  ctx.setTransform(Infinity, Infinity, 0, Infinity, 0, Infinity);
+  ctx.setTransform(Infinity, Infinity, 0, 0, Infinity, 0);
+  ctx.setTransform(Infinity, Infinity, 0, 0, Infinity, Infinity);
+  ctx.setTransform(Infinity, Infinity, 0, 0, 0, Infinity);
+  ctx.setTransform(Infinity, 0, Infinity, 0, 0, 0);
+  ctx.setTransform(Infinity, 0, Infinity, Infinity, 0, 0);
+  ctx.setTransform(Infinity, 0, Infinity, Infinity, Infinity, 0);
+  ctx.setTransform(Infinity, 0, Infinity, Infinity, Infinity, Infinity);
+  ctx.setTransform(Infinity, 0, Infinity, Infinity, 0, Infinity);
+  ctx.setTransform(Infinity, 0, Infinity, 0, Infinity, 0);
+  ctx.setTransform(Infinity, 0, Infinity, 0, Infinity, Infinity);
+  ctx.setTransform(Infinity, 0, Infinity, 0, 0, Infinity);
+  ctx.setTransform(Infinity, 0, 0, Infinity, 0, 0);
+  ctx.setTransform(Infinity, 0, 0, Infinity, Infinity, 0);
+  ctx.setTransform(Infinity, 0, 0, Infinity, Infinity, Infinity);
+  ctx.setTransform(Infinity, 0, 0, Infinity, 0, Infinity);
+  ctx.setTransform(Infinity, 0, 0, 0, Infinity, 0);
+  ctx.setTransform(Infinity, 0, 0, 0, Infinity, Infinity);
+  ctx.setTransform(Infinity, 0, 0, 0, 0, Infinity);
+  ctx.setTransform(0, Infinity, Infinity, 0, 0, 0);
+  ctx.setTransform(0, Infinity, Infinity, Infinity, 0, 0);
+  ctx.setTransform(0, Infinity, Infinity, Infinity, Infinity, 0);
+  ctx.setTransform(0, Infinity, Infinity, Infinity, Infinity, Infinity);
+  ctx.setTransform(0, Infinity, Infinity, Infinity, 0, Infinity);
+  ctx.setTransform(0, Infinity, Infinity, 0, Infinity, 0);
+  ctx.setTransform(0, Infinity, Infinity, 0, Infinity, Infinity);
+  ctx.setTransform(0, Infinity, Infinity, 0, 0, Infinity);
+  ctx.setTransform(0, Infinity, 0, Infinity, 0, 0);
+  ctx.setTransform(0, Infinity, 0, Infinity, Infinity, 0);
+  ctx.setTransform(0, Infinity, 0, Infinity, Infinity, Infinity);
+  ctx.setTransform(0, Infinity, 0, Infinity, 0, Infinity);
+  ctx.setTransform(0, Infinity, 0, 0, Infinity, 0);
+  ctx.setTransform(0, Infinity, 0, 0, Infinity, Infinity);
+  ctx.setTransform(0, Infinity, 0, 0, 0, Infinity);
+  ctx.setTransform(0, 0, Infinity, Infinity, 0, 0);
+  ctx.setTransform(0, 0, Infinity, Infinity, Infinity, 0);
+  ctx.setTransform(0, 0, Infinity, Infinity, Infinity, Infinity);
+  ctx.setTransform(0, 0, Infinity, Infinity, 0, Infinity);
+  ctx.setTransform(0, 0, Infinity, 0, Infinity, 0);
+  ctx.setTransform(0, 0, Infinity, 0, Infinity, Infinity);
+  ctx.setTransform(0, 0, Infinity, 0, 0, Infinity);
+  ctx.setTransform(0, 0, 0, Infinity, Infinity, 0);
+  ctx.setTransform(0, 0, 0, Infinity, Infinity, Infinity);
+  ctx.setTransform(0, 0, 0, Infinity, 0, Infinity);
+  ctx.setTransform(0, 0, 0, 0, Infinity, Infinity);
+
+  ctx.fillStyle = '#0f0';
+  ctx.fillRect(-100, -10, 100, 50);
+
+  _assertPixel(canvas, 50,25, 0,255,0,255);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/transformations/2d.transformation.setTransform.skewed.html b/testing/web-platform/tests/html/canvas/offscreen/transformations/2d.transformation.setTransform.skewed.html
new file mode 100644
index 0000000000..2d24d61f4b
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/transformations/2d.transformation.setTransform.skewed.html
@@ -0,0 +1,55 @@
+
+
+OffscreenCanvas test: 2d.transformation.setTransform.skewed
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.transformation.setTransform.skewed
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/transformations/2d.transformation.setTransform.skewed.worker.js b/testing/web-platform/tests/html/canvas/offscreen/transformations/2d.transformation.setTransform.skewed.worker.js
new file mode 100644
index 0000000000..161f4087e5
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/transformations/2d.transformation.setTransform.skewed.worker.js
@@ -0,0 +1,50 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.transformation.setTransform.skewed
+// Description:
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  // Create green with a red square ring inside it
+  ctx.fillStyle = '#0f0';
+  ctx.fillRect(0, 0, 100, 50);
+  ctx.fillStyle = '#f00';
+  ctx.fillRect(20, 10, 60, 30);
+  ctx.fillStyle = '#0f0';
+  ctx.fillRect(40, 20, 20, 10);
+
+  // Draw a skewed shape to fill that gap, to make sure it is aligned correctly
+  ctx.setTransform(1,4, 2,3, 5,6);
+  // Post-transform coordinates:
+  //   [[20,10],[80,10],[80,40],[20,40],[20,10],[40,20],[40,30],[60,30],[60,20],[40,20],[20,10]];
+  // Hence pre-transform coordinates:
+  var pts=[[-7.4,11.2],[-43.4,59.2],[-31.4,53.2],[4.6,5.2],[-7.4,11.2],
+           [-15.4,25.2],[-11.4,23.2],[-23.4,39.2],[-27.4,41.2],[-15.4,25.2],
+           [-7.4,11.2]];
+  ctx.beginPath();
+  ctx.moveTo(pts[0][0], pts[0][1]);
+  for (var i = 0; i < pts.length; ++i)
+      ctx.lineTo(pts[i][0], pts[i][1]);
+  ctx.fill();
+  _assertPixel(canvas, 21,11, 0,255,0,255);
+  _assertPixel(canvas, 79,11, 0,255,0,255);
+  _assertPixel(canvas, 21,39, 0,255,0,255);
+  _assertPixel(canvas, 79,39, 0,255,0,255);
+  _assertPixel(canvas, 39,19, 0,255,0,255);
+  _assertPixel(canvas, 61,19, 0,255,0,255);
+  _assertPixel(canvas, 39,31, 0,255,0,255);
+  _assertPixel(canvas, 61,31, 0,255,0,255);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/transformations/2d.transformation.transform.identity.html b/testing/web-platform/tests/html/canvas/offscreen/transformations/2d.transformation.transform.identity.html
new file mode 100644
index 0000000000..d88b3bc03c
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/transformations/2d.transformation.transform.identity.html
@@ -0,0 +1,33 @@
+
+
+OffscreenCanvas test: 2d.transformation.transform.identity
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.transformation.transform.identity
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              transform() with the identity matrix does nothing
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/transformations/2d.transformation.transform.identity.worker.js b/testing/web-platform/tests/html/canvas/offscreen/transformations/2d.transformation.transform.identity.worker.js
new file mode 100644
index 0000000000..67202628c6
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/transformations/2d.transformation.transform.identity.worker.js
@@ -0,0 +1,28 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.transformation.transform.identity
+// Description:transform() with the identity matrix does nothing
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("transform() with the identity matrix does nothing");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#f00';
+  ctx.fillRect(0, 0, 100, 50);
+
+  ctx.transform(1,0, 0,1, 0,0);
+  ctx.fillStyle = '#0f0';
+  ctx.fillRect(0, 0, 100, 50);
+  _assertPixel(canvas, 50,25, 0,255,0,255);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/transformations/2d.transformation.transform.multiply.html b/testing/web-platform/tests/html/canvas/offscreen/transformations/2d.transformation.transform.multiply.html
new file mode 100644
index 0000000000..a7dfbe5f34
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/transformations/2d.transformation.transform.multiply.html
@@ -0,0 +1,34 @@
+
+
+OffscreenCanvas test: 2d.transformation.transform.multiply
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.transformation.transform.multiply
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              transform() multiplies the CTM
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/transformations/2d.transformation.transform.multiply.worker.js b/testing/web-platform/tests/html/canvas/offscreen/transformations/2d.transformation.transform.multiply.worker.js
new file mode 100644
index 0000000000..aa89a7d8ca
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/transformations/2d.transformation.transform.multiply.worker.js
@@ -0,0 +1,29 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.transformation.transform.multiply
+// Description:transform() multiplies the CTM
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("transform() multiplies the CTM");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#f00';
+  ctx.fillRect(0, 0, 100, 50);
+
+  ctx.transform(1,2, 3,4, 5,6);
+  ctx.transform(-2,1, 3/2,-1/2, 1,-2);
+  ctx.fillStyle = '#0f0';
+  ctx.fillRect(0, 0, 100, 50);
+  _assertPixel(canvas, 50,25, 0,255,0,255);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/transformations/2d.transformation.transform.nonfinite.html b/testing/web-platform/tests/html/canvas/offscreen/transformations/2d.transformation.transform.nonfinite.html
new file mode 100644
index 0000000000..c4cd459c8b
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/transformations/2d.transformation.transform.nonfinite.html
@@ -0,0 +1,110 @@
+
+
+OffscreenCanvas test: 2d.transformation.transform.nonfinite
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.transformation.transform.nonfinite
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              transform() with Infinity/NaN is ignored
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/transformations/2d.transformation.transform.nonfinite.worker.js b/testing/web-platform/tests/html/canvas/offscreen/transformations/2d.transformation.transform.nonfinite.worker.js
new file mode 100644
index 0000000000..c96af44b59
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/transformations/2d.transformation.transform.nonfinite.worker.js
@@ -0,0 +1,105 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.transformation.transform.nonfinite
+// Description:transform() with Infinity/NaN is ignored
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("transform() with Infinity/NaN is ignored");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#f00';
+  ctx.fillRect(0, 0, 100, 50);
+
+  ctx.translate(100, 10);
+  ctx.transform(Infinity, 0, 0, 0, 0, 0);
+  ctx.transform(-Infinity, 0, 0, 0, 0, 0);
+  ctx.transform(NaN, 0, 0, 0, 0, 0);
+  ctx.transform(0, Infinity, 0, 0, 0, 0);
+  ctx.transform(0, -Infinity, 0, 0, 0, 0);
+  ctx.transform(0, NaN, 0, 0, 0, 0);
+  ctx.transform(0, 0, Infinity, 0, 0, 0);
+  ctx.transform(0, 0, -Infinity, 0, 0, 0);
+  ctx.transform(0, 0, NaN, 0, 0, 0);
+  ctx.transform(0, 0, 0, Infinity, 0, 0);
+  ctx.transform(0, 0, 0, -Infinity, 0, 0);
+  ctx.transform(0, 0, 0, NaN, 0, 0);
+  ctx.transform(0, 0, 0, 0, Infinity, 0);
+  ctx.transform(0, 0, 0, 0, -Infinity, 0);
+  ctx.transform(0, 0, 0, 0, NaN, 0);
+  ctx.transform(0, 0, 0, 0, 0, Infinity);
+  ctx.transform(0, 0, 0, 0, 0, -Infinity);
+  ctx.transform(0, 0, 0, 0, 0, NaN);
+  ctx.transform(Infinity, Infinity, 0, 0, 0, 0);
+  ctx.transform(Infinity, Infinity, Infinity, 0, 0, 0);
+  ctx.transform(Infinity, Infinity, Infinity, Infinity, 0, 0);
+  ctx.transform(Infinity, Infinity, Infinity, Infinity, Infinity, 0);
+  ctx.transform(Infinity, Infinity, Infinity, Infinity, Infinity, Infinity);
+  ctx.transform(Infinity, Infinity, Infinity, Infinity, 0, Infinity);
+  ctx.transform(Infinity, Infinity, Infinity, 0, Infinity, 0);
+  ctx.transform(Infinity, Infinity, Infinity, 0, Infinity, Infinity);
+  ctx.transform(Infinity, Infinity, Infinity, 0, 0, Infinity);
+  ctx.transform(Infinity, Infinity, 0, Infinity, 0, 0);
+  ctx.transform(Infinity, Infinity, 0, Infinity, Infinity, 0);
+  ctx.transform(Infinity, Infinity, 0, Infinity, Infinity, Infinity);
+  ctx.transform(Infinity, Infinity, 0, Infinity, 0, Infinity);
+  ctx.transform(Infinity, Infinity, 0, 0, Infinity, 0);
+  ctx.transform(Infinity, Infinity, 0, 0, Infinity, Infinity);
+  ctx.transform(Infinity, Infinity, 0, 0, 0, Infinity);
+  ctx.transform(Infinity, 0, Infinity, 0, 0, 0);
+  ctx.transform(Infinity, 0, Infinity, Infinity, 0, 0);
+  ctx.transform(Infinity, 0, Infinity, Infinity, Infinity, 0);
+  ctx.transform(Infinity, 0, Infinity, Infinity, Infinity, Infinity);
+  ctx.transform(Infinity, 0, Infinity, Infinity, 0, Infinity);
+  ctx.transform(Infinity, 0, Infinity, 0, Infinity, 0);
+  ctx.transform(Infinity, 0, Infinity, 0, Infinity, Infinity);
+  ctx.transform(Infinity, 0, Infinity, 0, 0, Infinity);
+  ctx.transform(Infinity, 0, 0, Infinity, 0, 0);
+  ctx.transform(Infinity, 0, 0, Infinity, Infinity, 0);
+  ctx.transform(Infinity, 0, 0, Infinity, Infinity, Infinity);
+  ctx.transform(Infinity, 0, 0, Infinity, 0, Infinity);
+  ctx.transform(Infinity, 0, 0, 0, Infinity, 0);
+  ctx.transform(Infinity, 0, 0, 0, Infinity, Infinity);
+  ctx.transform(Infinity, 0, 0, 0, 0, Infinity);
+  ctx.transform(0, Infinity, Infinity, 0, 0, 0);
+  ctx.transform(0, Infinity, Infinity, Infinity, 0, 0);
+  ctx.transform(0, Infinity, Infinity, Infinity, Infinity, 0);
+  ctx.transform(0, Infinity, Infinity, Infinity, Infinity, Infinity);
+  ctx.transform(0, Infinity, Infinity, Infinity, 0, Infinity);
+  ctx.transform(0, Infinity, Infinity, 0, Infinity, 0);
+  ctx.transform(0, Infinity, Infinity, 0, Infinity, Infinity);
+  ctx.transform(0, Infinity, Infinity, 0, 0, Infinity);
+  ctx.transform(0, Infinity, 0, Infinity, 0, 0);
+  ctx.transform(0, Infinity, 0, Infinity, Infinity, 0);
+  ctx.transform(0, Infinity, 0, Infinity, Infinity, Infinity);
+  ctx.transform(0, Infinity, 0, Infinity, 0, Infinity);
+  ctx.transform(0, Infinity, 0, 0, Infinity, 0);
+  ctx.transform(0, Infinity, 0, 0, Infinity, Infinity);
+  ctx.transform(0, Infinity, 0, 0, 0, Infinity);
+  ctx.transform(0, 0, Infinity, Infinity, 0, 0);
+  ctx.transform(0, 0, Infinity, Infinity, Infinity, 0);
+  ctx.transform(0, 0, Infinity, Infinity, Infinity, Infinity);
+  ctx.transform(0, 0, Infinity, Infinity, 0, Infinity);
+  ctx.transform(0, 0, Infinity, 0, Infinity, 0);
+  ctx.transform(0, 0, Infinity, 0, Infinity, Infinity);
+  ctx.transform(0, 0, Infinity, 0, 0, Infinity);
+  ctx.transform(0, 0, 0, Infinity, Infinity, 0);
+  ctx.transform(0, 0, 0, Infinity, Infinity, Infinity);
+  ctx.transform(0, 0, 0, Infinity, 0, Infinity);
+  ctx.transform(0, 0, 0, 0, Infinity, Infinity);
+
+  ctx.fillStyle = '#0f0';
+  ctx.fillRect(-100, -10, 100, 50);
+
+  _assertPixel(canvas, 50,25, 0,255,0,255);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/transformations/2d.transformation.transform.skewed.html b/testing/web-platform/tests/html/canvas/offscreen/transformations/2d.transformation.transform.skewed.html
new file mode 100644
index 0000000000..2f3c0453e3
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/transformations/2d.transformation.transform.skewed.html
@@ -0,0 +1,55 @@
+
+
+OffscreenCanvas test: 2d.transformation.transform.skewed
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.transformation.transform.skewed
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              transform() with skewy matrix transforms correctly
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/transformations/2d.transformation.transform.skewed.worker.js b/testing/web-platform/tests/html/canvas/offscreen/transformations/2d.transformation.transform.skewed.worker.js
new file mode 100644
index 0000000000..c7ebaf9a83
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/transformations/2d.transformation.transform.skewed.worker.js
@@ -0,0 +1,50 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.transformation.transform.skewed
+// Description:transform() with skewy matrix transforms correctly
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("transform() with skewy matrix transforms correctly");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  // Create green with a red square ring inside it
+  ctx.fillStyle = '#0f0';
+  ctx.fillRect(0, 0, 100, 50);
+  ctx.fillStyle = '#f00';
+  ctx.fillRect(20, 10, 60, 30);
+  ctx.fillStyle = '#0f0';
+  ctx.fillRect(40, 20, 20, 10);
+
+  // Draw a skewed shape to fill that gap, to make sure it is aligned correctly
+  ctx.transform(1,4, 2,3, 5,6);
+  // Post-transform coordinates:
+  //   [[20,10],[80,10],[80,40],[20,40],[20,10],[40,20],[40,30],[60,30],[60,20],[40,20],[20,10]];
+  // Hence pre-transform coordinates:
+  var pts=[[-7.4,11.2],[-43.4,59.2],[-31.4,53.2],[4.6,5.2],[-7.4,11.2],
+           [-15.4,25.2],[-11.4,23.2],[-23.4,39.2],[-27.4,41.2],[-15.4,25.2],
+           [-7.4,11.2]];
+  ctx.beginPath();
+  ctx.moveTo(pts[0][0], pts[0][1]);
+  for (var i = 0; i < pts.length; ++i)
+      ctx.lineTo(pts[i][0], pts[i][1]);
+  ctx.fill();
+  _assertPixel(canvas, 21,11, 0,255,0,255);
+  _assertPixel(canvas, 79,11, 0,255,0,255);
+  _assertPixel(canvas, 21,39, 0,255,0,255);
+  _assertPixel(canvas, 79,39, 0,255,0,255);
+  _assertPixel(canvas, 39,19, 0,255,0,255);
+  _assertPixel(canvas, 61,19, 0,255,0,255);
+  _assertPixel(canvas, 39,31, 0,255,0,255);
+  _assertPixel(canvas, 61,31, 0,255,0,255);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/transformations/2d.transformation.translate.basic.html b/testing/web-platform/tests/html/canvas/offscreen/transformations/2d.transformation.translate.basic.html
new file mode 100644
index 0000000000..f68225c077
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/transformations/2d.transformation.translate.basic.html
@@ -0,0 +1,33 @@
+
+
+OffscreenCanvas test: 2d.transformation.translate.basic
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.transformation.translate.basic
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              translate() works
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/transformations/2d.transformation.translate.basic.worker.js b/testing/web-platform/tests/html/canvas/offscreen/transformations/2d.transformation.translate.basic.worker.js
new file mode 100644
index 0000000000..f377ab8a48
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/transformations/2d.transformation.translate.basic.worker.js
@@ -0,0 +1,28 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.transformation.translate.basic
+// Description:translate() works
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("translate() works");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#f00';
+  ctx.fillRect(0, 0, 100, 50);
+
+  ctx.translate(100, 50);
+  ctx.fillStyle = '#0f0';
+  ctx.fillRect(-100, -50, 100, 50);
+  _assertPixel(canvas, 90,40, 0,255,0,255);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/transformations/2d.transformation.translate.nonfinite.html b/testing/web-platform/tests/html/canvas/offscreen/transformations/2d.transformation.translate.nonfinite.html
new file mode 100644
index 0000000000..ebab949b4c
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/transformations/2d.transformation.translate.nonfinite.html
@@ -0,0 +1,42 @@
+
+
+OffscreenCanvas test: 2d.transformation.translate.nonfinite
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.transformation.translate.nonfinite
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              translate() with Infinity/NaN is ignored
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/transformations/2d.transformation.translate.nonfinite.worker.js b/testing/web-platform/tests/html/canvas/offscreen/transformations/2d.transformation.translate.nonfinite.worker.js
new file mode 100644
index 0000000000..7ad6fce2ba
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/transformations/2d.transformation.translate.nonfinite.worker.js
@@ -0,0 +1,37 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.transformation.translate.nonfinite
+// Description:translate() with Infinity/NaN is ignored
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("translate() with Infinity/NaN is ignored");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#f00';
+  ctx.fillRect(0, 0, 100, 50);
+
+  ctx.translate(100, 10);
+  ctx.translate(Infinity, 0.1);
+  ctx.translate(-Infinity, 0.1);
+  ctx.translate(NaN, 0.1);
+  ctx.translate(0.1, Infinity);
+  ctx.translate(0.1, -Infinity);
+  ctx.translate(0.1, NaN);
+  ctx.translate(Infinity, Infinity);
+
+  ctx.fillStyle = '#0f0';
+  ctx.fillRect(-100, -10, 100, 50);
+
+  _assertPixel(canvas, 50,25, 0,255,0,255);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/wide-gamut-canvas/2d.color.space.p3.to.p3.html b/testing/web-platform/tests/html/canvas/offscreen/wide-gamut-canvas/2d.color.space.p3.to.p3.html
new file mode 100644
index 0000000000..e1391e9010
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/wide-gamut-canvas/2d.color.space.p3.to.p3.html
@@ -0,0 +1,39 @@
+
+
+OffscreenCanvas test: 2d.color.space.p3.to.p3
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.color.space.p3.to.p3
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              test getImageData with display-p3 and uint8 from display p3 uint8 canvas
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/wide-gamut-canvas/2d.color.space.p3.to.p3.worker.js b/testing/web-platform/tests/html/canvas/offscreen/wide-gamut-canvas/2d.color.space.p3.to.p3.worker.js
new file mode 100644
index 0000000000..844cd93f81
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/wide-gamut-canvas/2d.color.space.p3.to.p3.worker.js
@@ -0,0 +1,34 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.color.space.p3.to.p3
+// Description:test getImageData with display-p3 and uint8 from display p3 uint8 canvas
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("test getImageData with display-p3 and uint8 from display p3 uint8 canvas");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d', {colorSpace: "display-p3"});
+
+  var color_style = 'rgb(50, 100, 150)';
+  // [0.24304, 0.38818, 0.57227, 1.0] * 255 = [62, 99, 146, 255]
+  var pixel_expected = [62, 99, 146, 255];
+  var epsilon = 2;
+  ctx.fillStyle = color_style;
+  ctx.fillRect(0, 0, 10, 10);
+
+  var pixel = ctx.getImageData(5, 5, 1, 1, {colorSpace: "display-p3", storageFormat: "uint8"}).data;
+  _assertSame(pixel.length, pixel_expected.length, "pixel.length", "pixel_expected.length");
+  assert_approx_equals(pixel[0], pixel_expected[0], 2);
+  assert_approx_equals(pixel[1], pixel_expected[1], 2);
+  assert_approx_equals(pixel[2], pixel_expected[2], 2);
+  assert_approx_equals(pixel[3], pixel_expected[3], 2);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/offscreen/wide-gamut-canvas/2d.color.space.p3.to.srgb.html b/testing/web-platform/tests/html/canvas/offscreen/wide-gamut-canvas/2d.color.space.p3.to.srgb.html
new file mode 100644
index 0000000000..0628744421
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/wide-gamut-canvas/2d.color.space.p3.to.srgb.html
@@ -0,0 +1,38 @@
+
+
+OffscreenCanvas test: 2d.color.space.p3.to.srgb
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              2d.color.space.p3.to.srgb
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              test getImageData with srsb and uint8 from display p3 uint8 canvas
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+
+
diff --git a/testing/web-platform/tests/html/canvas/offscreen/wide-gamut-canvas/2d.color.space.p3.to.srgb.worker.js b/testing/web-platform/tests/html/canvas/offscreen/wide-gamut-canvas/2d.color.space.p3.to.srgb.worker.js
new file mode 100644
index 0000000000..619c59076d
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/wide-gamut-canvas/2d.color.space.p3.to.srgb.worker.js
@@ -0,0 +1,33 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.color.space.p3.to.srgb
+// Description:test getImageData with srsb and uint8 from display p3 uint8 canvas
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("test getImageData with srsb and uint8 from display p3 uint8 canvas");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d', {colorSpace: "display-p3"});
+
+  var color_style = 'rgb(50, 100, 150)';
+  var pixel_expected = [50, 100, 150, 255];
+  var epsilon = 2;
+  ctx.fillStyle = color_style;
+  ctx.fillRect(0, 0, 10, 10);
+
+  var pixel = ctx.getImageData(5, 5, 1, 1, {colorSpace: "srgb", storageFormat: "uint8"}).data;
+  _assertSame(pixel.length, pixel_expected.length, "pixel.length", "pixel_expected.length");
+  assert_approx_equals(pixel[0], pixel_expected[0], 2);
+  assert_approx_equals(pixel[1], pixel_expected[1], 2);
+  assert_approx_equals(pixel[2], pixel_expected[2], 2);
+  assert_approx_equals(pixel[3], pixel_expected[3], 2);
+  t.done();
+});
+done();
diff --git a/testing/web-platform/tests/html/canvas/resources/2x2.png b/testing/web-platform/tests/html/canvas/resources/2x2.png
new file mode 100644
index 0000000000..9be31562b3
Binary files /dev/null and b/testing/web-platform/tests/html/canvas/resources/2x2.png differ
diff --git a/testing/web-platform/tests/html/canvas/resources/canvas-frame.css b/testing/web-platform/tests/html/canvas/resources/canvas-frame.css
new file mode 100644
index 0000000000..0c97a680d1
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/resources/canvas-frame.css
@@ -0,0 +1,21 @@
+body {
+    font-size: small;
+    font-family: sans-serif;
+}
+
+p {
+    line-height: 0;
+}
+
+p:first-child {
+    display: inline;
+}
+
+h1 {
+    display: inline;
+}
+
+iframe, object {
+    border: 1px black solid;
+    margin: 2px;
+}
diff --git a/testing/web-platform/tests/html/canvas/resources/canvas-frame.css.headers b/testing/web-platform/tests/html/canvas/resources/canvas-frame.css.headers
new file mode 100644
index 0000000000..e13897f157
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/resources/canvas-frame.css.headers
@@ -0,0 +1 @@
+Content-Type: text/css; charset=utf-8
diff --git a/testing/web-platform/tests/html/canvas/resources/canvas-index.css b/testing/web-platform/tests/html/canvas/resources/canvas-index.css
new file mode 100644
index 0000000000..ef35864bc0
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/resources/canvas-index.css
@@ -0,0 +1,31 @@
+body {
+    font-size: small;
+    font-family: sans-serif;
+}
+
+a {
+    text-decoration: none;
+}
+
+a:hover {
+    text-decoration: underline;
+}
+
+h3 {
+    display: inline;
+    font-size: medium;
+}
+
+h3 + p {
+    display: inline;
+    margin-left: 0.5em;
+}
+
+li {
+    list-style-type: none;
+}
+
+ul {
+    padding-left: 2em;
+    margin-left: 0;
+}
diff --git a/testing/web-platform/tests/html/canvas/resources/canvas-index.css.headers b/testing/web-platform/tests/html/canvas/resources/canvas-index.css.headers
new file mode 100644
index 0000000000..e13897f157
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/resources/canvas-index.css.headers
@@ -0,0 +1 @@
+Content-Type: text/css; charset=utf-8
diff --git a/testing/web-platform/tests/html/canvas/resources/canvas-spec.css b/testing/web-platform/tests/html/canvas/resources/canvas-spec.css
new file mode 100644
index 0000000000..5882acb68e
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/resources/canvas-spec.css
@@ -0,0 +1,50 @@
+.testrefs {
+    font-size: small;
+    margin-left: 0.2em;
+    margin-right: 0.2em;
+    border-bottom: none !important;
+
+    font-weight: normal;
+    font-style: normal;
+    white-space: normal;
+    font-family: sans-serif;
+}
+
+.kw-must, .kw-required {
+    background: #fda;
+}
+
+.kw-should {
+    background: #ffa;
+}
+
+.kw-none {
+    background: #dfa;
+}
+
+
+pre.idl .testrefs :link {
+    color: #00c;
+}
+
+pre.idl .testrefs :visited {
+    color: #609;
+}
+
+.testrefs a:hover {
+    background: transparent;
+    text-decoration: none;
+}
+
+.testrefs:before {
+    content: '[';
+}
+
+.testrefs:after {
+    content: ']';
+}
+
+.testrefs a:first-child {
+    font-weight: bold;
+    text-decoration: none;
+}
diff --git a/testing/web-platform/tests/html/canvas/resources/canvas-spec.css.headers b/testing/web-platform/tests/html/canvas/resources/canvas-spec.css.headers
new file mode 100644
index 0000000000..e13897f157
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/resources/canvas-spec.css.headers
@@ -0,0 +1 @@
+Content-Type: text/css; charset=utf-8
diff --git a/testing/web-platform/tests/html/canvas/resources/canvas-tests.css b/testing/web-platform/tests/html/canvas/resources/canvas-tests.css
new file mode 100644
index 0000000000..e006e812de
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/resources/canvas-tests.css
@@ -0,0 +1,134 @@
+html.fail {
+    background: #f66;
+}
+html.pass {
+    background: #6f6;
+}
+html.needs_check {
+    background: #99f;
+}
+
+body {
+    font-size: small;
+    font-family: sans-serif;
+    color: black;
+}
+
+a:link {
+    color: #00c;
+}
+a:visited {
+    color: #808;
+}
+
+body.framed {
+    font-size: x-small;
+}
+
+h1 {
+    font-size: larger;
+    margin: 0;
+    padding-left: 0.5em;
+    text-indent: -0.5em;
+}
+
+p {
+    margin: 0;
+}
+
+p.notes {
+    margin-bottom: 0.5em;
+    font-style: italic;
+}
+
+ul {
+    margin: 0;
+    margin-bottom: 0.5em;
+    padding: 0;
+    padding-left: 1em;
+}
+
+.refs {
+    font-style: italic;
+    margin-bottom: 0.5em;
+}
+
+.refs ul {
+    display: inline;
+    margin: 0;
+    padding: 0;
+}
+
+.refs li {
+    display: inline;
+    list-style-type: none;
+    margin: 0;
+    padding: 0;
+}
+
+canvas {
+    display: none;
+    visibility: hidden;
+    border: 2px #f0f solid;
+    background: url(../images/background.png);
+}
+
+img.expected {
+    display: none;
+    border: 2px #f0f solid;
+    background: url(../images/background.png);
+}
+
+iframe {
+    border: 2px #f0f solid;
+}
+
+.output {
+    display: none;
+}
+
+.show_output .output, .needs_check .output  {
+    display: block !important;
+    visibility: visible !important;
+}
+
+.show_output #show_output {
+    display: none;
+}
+
+.resource {
+    visibility: hidden;
+    height: 0;
+}
+
+.fallback {
+    font-size: 2em;
+    font-weight: bold;
+    color: #a00;
+}
+
+
+html.minimal body {
+    color: white;
+}
+html.fail.minimal {
+    background: #f00;
+}
+html.pass.minimal {
+    background: #080;
+}
+html.needs_check.minimal {
+    background: #008;
+}
+.minimal #d {
+    display: none !important;
+}
+.minimal .expectedtext {
+    visibility: hidden !important;
+}
+#passtext, #failtext {
+    display: none;
+}
+.minimal.pass #passtext, .minimal.fail #failtext {
+    display: block;
+}
diff --git a/testing/web-platform/tests/html/canvas/resources/canvas-tests.css.headers b/testing/web-platform/tests/html/canvas/resources/canvas-tests.css.headers
new file mode 100644
index 0000000000..e13897f157
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/resources/canvas-tests.css.headers
@@ -0,0 +1 @@
+Content-Type: text/css; charset=utf-8
diff --git a/testing/web-platform/tests/html/canvas/resources/canvas-tests.js b/testing/web-platform/tests/html/canvas/resources/canvas-tests.js
new file mode 100644
index 0000000000..c6e2873283
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/resources/canvas-tests.js
@@ -0,0 +1,221 @@
+function _valToString(val)
+{
+    if (val === undefined || val === null)
+        return '[' + typeof(val) + ']';
+    return val.toString() + '[' + typeof(val) + ']';
+}
+
+function _assert(cond, text)
+{
+    assert_true(!!cond, text);
+}
+
+function _assertSame(a, b, text_a, text_b)
+{
+    var msg = text_a + ' === ' + text_b + ' (got ' + _valToString(a) +
+              ', expected ' + _valToString(b) + ')';
+    assert_equals(a, b, msg);
+}
+
+function _assertDifferent(a, b, text_a, text_b)
+{
+    var msg = text_a + ' !== ' + text_b + ' (got ' + _valToString(a) +
+              ', expected not ' + _valToString(b) + ')';
+    assert_not_equals(a, b, msg);
+}
+
+
+function _getPixel(canvas, x,y)
+{
+    var ctx = canvas.getContext('2d');
+    var imgdata = ctx.getImageData(x, y, 1, 1);
+    return [ imgdata.data[0], imgdata.data[1], imgdata.data[2], imgdata.data[3] ];
+}
+
+function _assertPixel(canvas, x, y, r, g, b, a)
+{
+    var c = _getPixel(canvas, x,y);
+    assert_equals(c[0], r, 'Red channel of the pixel at (' + x + ', ' + y + ')');
+    assert_equals(c[1], g, 'Green channel of the pixel at (' + x + ', ' + y + ')');
+    assert_equals(c[2], b, 'Blue channel of the pixel at (' + x + ', ' + y + ')');
+    assert_equals(c[3], a, 'Alpha channel of the pixel at (' + x + ', ' + y + ')');
+}
+
+function _assertPixelApprox(canvas, x, y, r, g, b, a, tolerance)
+{
+    var c = _getPixel(canvas, x,y);
+    assert_approx_equals(c[0], r, tolerance, 'Red channel of the pixel at (' + x + ', ' + y + ')');
+    assert_approx_equals(c[1], g, tolerance, 'Green channel of the pixel at (' + x + ', ' + y + ')');
+    assert_approx_equals(c[2], b, tolerance, 'Blue channel of the pixel at (' + x + ', ' + y + ')');
+    assert_approx_equals(c[3], a, tolerance, 'Alpha channel of the pixel at (' + x + ', ' + y + ')');
+}
+
+function _assertMatricesApproxEqual(matA, matB)
+{
+  A = matA.toFloat32Array();
+  B = matB.toFloat32Array();
+  assert_equals(A.length, B.length);
+  for (var i = 0; i < A.length; i++) {
+    assert_approx_equals(A[i], B[i], 10e-6);
+  }
+}
+
+function rad2deg(angle_in_radians) {
+  return angle_in_radians / Math.PI * 180;
+}
+
+function deg2rad(angle_in_degrees) {
+  return angle_in_degrees / 180 * Math.PI;
+}
+
+let _deferred = false;
+
+function deferTest() {
+  _deferred = true;
+}
+
+function _addTest(testFn, attributes={})
+{
+    on_event(window, "load", function()
+    {
+        t.step(function() {
+            var canvas = document.getElementById('c');
+            var ctx = canvas.getContext('2d', attributes);
+            t.step(testFn, window, canvas, ctx);
+        });
+
+        if (!_deferred) {
+            t.done();
+        }
+    });
+}
+
+function _assertGreen(ctx, canvasWidth, canvasHeight)
+{
+    var testColor = function(d, idx, expected) {
+        assert_equals(d[idx], expected, "d[" + idx + "]", String(expected));
+    };
+    var imagedata = ctx.getImageData(0, 0, canvasWidth, canvasHeight);
+    var w = imagedata.width, h = imagedata.height, d = imagedata.data;
+    for (var i = 0; i < h; ++i) {
+        for (var j = 0; j < w; ++j) {
+            testColor(d, 4 * (w * i + j) + 0, 0);
+            testColor(d, 4 * (w * i + j) + 1, 255);
+            testColor(d, 4 * (w * i + j) + 2, 0);
+            testColor(d, 4 * (w * i + j) + 3, 255);
+        }
+    }
+}
+
+function addCrossOriginYellowImage()
+{
+    var img = new Image();
+    img.id = "yellow.png";
+    img.className = "resource";
+    img.src = get_host_info().HTTP_REMOTE_ORIGIN + "/images/yellow.png";
+    document.body.appendChild(img);
+}
+
+function addCrossOriginRedirectYellowImage()
+{
+    var img = new Image();
+    img.id = "yellow.png";
+    img.className = "resource";
+    img.src = get_host_info().HTTP_ORIGIN + "/common/redirect.py?location=" +
+        get_host_info().HTTP_REMOTE_ORIGIN + "/images/yellow.png";
+    document.body.appendChild(img);
+}
+
+function forEachCanvasSource(crossOriginUrl, sameOriginUrl, callback) {
+  function makeImage() {
+    return new Promise((resolve, reject) => {
+      const image = new Image();
+      image.onload = () => resolve(image);
+      image.onerror = reject;
+      image.src = crossOriginUrl + "/images/red.png";
+    });
+  }
+
+  const arguments = [
+    {
+      name: "cross-origin HTMLImageElement",
+      factory: makeImage,
+    },
+
+    {
+      name: "cross-origin SVGImageElement",
+      factory: () => {
+        return new Promise((resolve, reject) => {
+          const image = document.createElementNS("http://www.w3.org/2000/svg", "image");
+          image.onload = () => resolve(image);
+          image.onerror = reject;
+          image.setAttribute("externalResourcesRequired", "true");
+          image.setAttributeNS("http://www.w3.org/1999/xlink", 'xlink:href', crossOriginUrl + "/images/red.png");
+          document.body.appendChild(image);
+        });
+      },
+    },
+
+    {
+      name: "cross-origin HTMLVideoElement",
+      factory: () => {
+        return new Promise((resolve, reject) => {
+          const video = document.createElement("video");
+          video.oncanplaythrough = () => resolve(video);
+          video.preload = "auto";
+          video.onerror = reject;
+          video.src = getVideoURI(crossOriginUrl + "/media/movie_300");
+        });
+      },
+    },
+
+    {
+      name: "redirected to cross-origin HTMLVideoElement",
+      factory: () => {
+        return new Promise((resolve, reject) => {
+          const video = document.createElement("video");
+          video.oncanplaythrough = () => resolve(video);
+          video.preload = "auto";
+          video.onerror = reject;
+          video.src = "/common/redirect.py?location=" + getVideoURI(crossOriginUrl + "/media/movie_300");
+        });
+      },
+    },
+
+    {
+      name: "redirected to same-origin HTMLVideoElement",
+      factory: () => {
+        return new Promise((resolve, reject) => {
+          const video = document.createElement("video");
+          video.oncanplaythrough = () => resolve(video);
+          video.preload = "auto";
+          video.onerror = reject;
+          video.src = crossOriginUrl + "/common/redirect.py?location=" + getVideoURI(sameOriginUrl + "/media/movie_300");
+        });
+      },
+    },
+
+    {
+      name: "unclean HTMLCanvasElement",
+      factory: () => {
+        return makeImage().then(image => {
+          const canvas = document.createElement("canvas");
+          const context = canvas.getContext("2d");
+          context.drawImage(image, 0, 0);
+          return canvas;
+        });
+      },
+    },
+
+    {
+      name: "unclean ImageBitmap",
+      factory: () => {
+        return makeImage().then(createImageBitmap);
+      },
+    },
+  ];
+
+  for (let { name, factory } of arguments) {
+    callback(name, factory);
+  }
+}
diff --git a/testing/web-platform/tests/html/canvas/resources/canvas-tests.js.headers b/testing/web-platform/tests/html/canvas/resources/canvas-tests.js.headers
new file mode 100644
index 0000000000..6805c323df
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/resources/canvas-tests.js.headers
@@ -0,0 +1 @@
+Content-Type: text/javascript; charset=utf-8
diff --git a/testing/web-platform/tests/html/canvas/tools/PRESUBMIT.py b/testing/web-platform/tests/html/canvas/tools/PRESUBMIT.py
new file mode 100644
index 0000000000..048e96b701
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/tools/PRESUBMIT.py
@@ -0,0 +1,22 @@
+# Copyright 2023 The Chromium Authors
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+"""Presubmit script for t/b/web_tests/external/wpt/html/canvas/tools.
+
+See http://dev.chromium.org/developers/how-tos/depottools/presubmit-scripts
+for more details about the presubmit API built into depot_tools.
+"""
+
+USE_PYTHON3 = True
+
+
+def CommonChecks(input_api, output_api):
+    return input_api.canned_checks.RunPylint(input_api, output_api)
+
+
+def CheckChangeOnUpload(input_api, output_api):
+    return CommonChecks(input_api, output_api)
+
+
+def CheckChangeOnCommit(input_api, output_api):
+    return CommonChecks(input_api, output_api)
diff --git a/testing/web-platform/tests/html/canvas/tools/gentest.py b/testing/web-platform/tests/html/canvas/tools/gentest.py
new file mode 100644
index 0000000000..bca7b9ecfc
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/tools/gentest.py
@@ -0,0 +1,8 @@
+from gentestutils import genTestUtils
+from gentestutilsunion import genTestUtils_union
+
+genTestUtils('../element', '../element', 'templates.yaml',
+             'name2dir-canvas.yaml', False)
+genTestUtils('../offscreen', '../offscreen', 'templates.yaml',
+             'name2dir-offscreen.yaml', True)
+genTestUtils_union('templates-new.yaml', 'name2dir.yaml')
diff --git a/testing/web-platform/tests/html/canvas/tools/gentest_union.py b/testing/web-platform/tests/html/canvas/tools/gentest_union.py
new file mode 100644
index 0000000000..62c1cde6a1
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/tools/gentest_union.py
@@ -0,0 +1,3 @@
+from gentestutilsunion import genTestUtils_union
+
+genTestUtils_union('templates-new.yaml', 'name2dir-canvas.yaml')
diff --git a/testing/web-platform/tests/html/canvas/tools/gentestutils.py b/testing/web-platform/tests/html/canvas/tools/gentestutils.py
new file mode 100644
index 0000000000..27412e40df
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/tools/gentestutils.py
@@ -0,0 +1,367 @@
+# Current code status:
+#
+# This was originally written by Philip Taylor for use at
+# http://philip.html5.org/tests/canvas/suite/tests/
+#
+# It has been adapted for use with the Web Platform Test Suite suite at
+# https://github.com/web-platform-tests/wpt/
+#
+# The original version had a number of now-removed features (multiple versions
+# of each test case of varying verbosity, Mozilla mochitests, semi-automated
+# test harness). It also had a different directory structure.
+
+# To update or add test cases:
+#
+# * Modify the tests*.yaml files.
+#  - 'name' is an arbitrary hierarchical name to help categorise tests.
+#  - 'desc' is a rough description of what behaviour the test aims to test.
+#  - 'code' is JavaScript code to execute, with some special commands starting
+#    with '@'
+#  - 'expected' is what the final canvas output should be: a string 'green' or
+#    'clear' (100x50 images in both cases), or a string 'size 100 50' (or any
+#    other size) followed by Python code using Pycairo to generate the image.
+#
+# * Run "./build.sh".
+# This requires a few Python modules which might not be ubiquitous.
+# It will usually emit some warnings, which ideally should be fixed but can
+# generally be safely ignored.
+#
+# * Test the tests, add new ones to Git, remove deleted ones from Git, etc.
+
+from typing import List, Mapping
+
+import re
+import importlib
+import os
+import pathlib
+import sys
+
+try:
+    import cairocffi as cairo  # type: ignore
+except ImportError:
+    import cairo
+
+try:
+    # Compatible and lots faster.
+    import syck as yaml  # type: ignore
+except ImportError:
+    import yaml
+
+
+class Error(Exception):
+    """Base class for all exceptions raised by this module"""
+
+
+class InvalidTestDefinitionError(Error):
+    """Raised on invalid test definition."""
+
+
+def _simpleEscapeJS(string: str) -> str:
+    return string.replace('\\', '\\\\').replace('"', '\\"')
+
+
+def _escapeJS(string: str) -> str:
+    string = _simpleEscapeJS(string)
+    # Kind of an ugly hack, for nicer failure-message output.
+    string = re.sub(r'\[(\w+)\]', r'[\\""+(\1)+"\\"]', string)
+    return string
+
+
+def _expand_nonfinite(method: str, argstr: str, tail: str) -> str:
+    """
+    >>> print _expand_nonfinite('f', '<0 a>, <0 b>', ';')
+    f(a, 0);
+    f(0, b);
+    f(a, b);
+    >>> print _expand_nonfinite('f', '<0 a>, <0 b c>, <0 d>', ';')
+    f(a, 0, 0);
+    f(0, b, 0);
+    f(0, c, 0);
+    f(0, 0, d);
+    f(a, b, 0);
+    f(a, b, d);
+    f(a, 0, d);
+    f(0, b, d);
+    """
+    # argstr is ", ..." (where usually
+    # 'invalid' is Infinity/-Infinity/NaN).
+    args = []
+    for arg in argstr.split(', '):
+        match = re.match('<(.*)>', arg)
+        if match is None:
+            raise InvalidTestDefinitionError(
+                f"Expected arg to match format '<(.*)>', but was: {arg}")
+        a = match.group(1)
+        args.append(a.split(' '))
+    calls = []
+    # Start with the valid argument list.
+    call = [args[j][0] for j in range(len(args))]
+    # For each argument alone, try setting it to all its invalid values:
+    for i in range(len(args)):
+        for a in args[i][1:]:
+            c2 = call[:]
+            c2[i] = a
+            calls.append(c2)
+    # For all combinations of >= 2 arguments, try setting them to their
+    # first invalid values. (Don't do all invalid values, because the
+    # number of combinations explodes.)
+    def f(c: List[str], start: int, depth: int) -> None:
+        for i in range(start, len(args)):
+            if len(args[i]) > 1:
+                a = args[i][1]
+                c2 = c[:]
+                c2[i] = a
+                if depth > 0:
+                    calls.append(c2)
+                f(c2, i + 1, depth + 1)
+
+    f(call, 0, 0)
+
+    return '\n'.join('%s(%s)%s' % (method, ', '.join(c), tail) for c in calls)
+
+
+def _get_test_sub_dir(name: str, name_to_sub_dir: Mapping[str, str]) -> str:
+    for prefix in sorted(name_to_sub_dir.keys(), key=len, reverse=True):
+        if name.startswith(prefix):
+            return name_to_sub_dir[prefix]
+    raise InvalidTestDefinitionError(
+        'Test "%s" has no defined target directory mapping' % name)
+
+
+def _expand_test_code(code: str) -> str:
+    code = re.sub(r'@nonfinite ([^(]+)\(([^)]+)\)(.*)', lambda m:
+                  _expand_nonfinite(m.group(1), m.group(2), m.group(3)),
+                  code)  # Must come before '@assert throws'.
+
+    code = re.sub(r'@assert pixel (\d+,\d+) == (\d+,\d+,\d+,\d+);',
+                  r'_assertPixel(canvas, \1, \2);', code)
+
+    code = re.sub(r'@assert pixel (\d+,\d+) ==~ (\d+,\d+,\d+,\d+);',
+                  r'_assertPixelApprox(canvas, \1, \2, 2);', code)
+
+    code = re.sub(r'@assert pixel (\d+,\d+) ==~ (\d+,\d+,\d+,\d+) \+/- (\d+);',
+                  r'_assertPixelApprox(canvas, \1, \2, \3);', code)
+
+    code = re.sub(r'@assert throws (\S+_ERR) (.*);',
+                  r'assert_throws_dom("\1", function() { \2; });', code)
+
+    code = re.sub(r'@assert throws (\S+Error) (.*);',
+                  r'assert_throws_js(\1, function() { \2; });', code)
+
+    code = re.sub(
+        r'@assert (.*) === (.*);', lambda m: '_assertSame(%s, %s, "%s", "%s");'
+        % (m.group(1), m.group(2), _escapeJS(m.group(1)), _escapeJS(m.group(2))
+           ), code)
+
+    code = re.sub(
+        r'@assert (.*) !== (.*);', lambda m:
+        '_assertDifferent(%s, %s, "%s", "%s");' % (m.group(1), m.group(
+            2), _escapeJS(m.group(1)), _escapeJS(m.group(2))), code)
+
+    code = re.sub(
+        r'@assert (.*) =~ (.*);', lambda m: 'assert_regexp_match(%s, %s);' % (
+            m.group(1), m.group(2)), code)
+
+    code = re.sub(
+        r'@assert (.*);', lambda m: '_assert(%s, "%s");' % (m.group(
+            1), _escapeJS(m.group(1))), code)
+
+    code = re.sub(r' @moz-todo', '', code)
+
+    code = re.sub(r'@moz-UniversalBrowserRead;', '', code)
+
+    assert ('@' not in code)
+
+    return code
+
+
+_CANVAS_SIZE_REGEX = re.compile(r'(?P.*), (?P.*)',
+                                re.MULTILINE | re.DOTALL)
+
+
+def _get_canvas_size(test: Mapping[str, str]):
+    size = test.get('size', '100, 50')
+    match = _CANVAS_SIZE_REGEX.match(size)
+    if not match:
+        raise InvalidTestDefinitionError(
+            'Invalid canvas size "%s" in test %s. Expected a string matching '
+            'this pattern: "%%s, %%s" %% (width, height)' %
+            (size, test['name']))
+    return match.group('width'), match.group('height')
+
+
+def _generate_test(test: Mapping[str, str], templates: Mapping[str, str],
+                   sub_dir: str, test_output_dir: str, image_output_dir: str,
+                   is_offscreen_canvas: bool):
+    name = test['name']
+
+    if test.get('expected', '') == 'green' and re.search(
+            r'@assert pixel .* 0,0,0,0;', test['code']):
+        print('Probable incorrect pixel test in %s' % name)
+
+    code = _expand_test_code(test['code'])
+
+    expectation_html = ''
+    if 'expected' in test and test['expected'] is not None:
+        expected = test['expected']
+        expected_img = None
+        if expected == 'green':
+            expected_img = '/images/green-100x50.png'
+        elif expected == 'clear':
+            expected_img = '/images/clear-100x50.png'
+        else:
+            if ';' in expected:
+                print('Found semicolon in %s' % name)
+            expected = re.sub(
+                r'^size (\d+) (\d+)',
+                r'surface = cairo.ImageSurface(cairo.FORMAT_ARGB32, \1, \2)'
+                r'\ncr = cairo.Context(surface)', expected)
+
+            expected += ("\nsurface.write_to_png('%s.png')\n" %
+                         os.path.join(image_output_dir, sub_dir, name))
+            eval(compile(expected, '' % name, 'exec'), {},
+                 {'cairo': cairo})
+            expected_img = '%s.png' % name
+
+        if expected_img:
+            expectation_html = (
+                '
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              '
+                '' % expected_img)
+
+    canvas = ' ' + test['canvas'] if 'canvas' in test else ''
+    width, height = _get_canvas_size(test)
+
+    notes = '
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              %s' % test['notes'] if 'notes' in test else ''
+
+    timeout = ('\n' %
+               test['timeout'] if 'timeout' in test else '')
+    timeout_js = ('// META: timeout=%s\n' % test['timeout']
+                  if 'timeout' in test else '')
+
+    images = ''
+    for src in test.get('images', []):
+        img_id = src.split('/')[-1]
+        if '/' not in src:
+            src = '../images/%s' % src
+        images += '\n' % (src, img_id)
+    for src in test.get('svgimages', []):
+        img_id = src.split('/')[-1]
+        if '/' not in src:
+            src = '../images/%s' % src
+        images += (''
+                   '\n' % (src, img_id))
+    images = images.replace('../images/', '/images/')
+
+    fonts = ''
+    fonthack = ''
+    for font in test.get('fonts', []):
+        fonts += ('@font-face {\n  font-family: %s;\n'
+                  '  src: url("/fonts/%s.ttf");\n}\n' % (font, font))
+        # Browsers require the font to actually be used in the page.
+        if test.get('fonthack', 1):
+            fonthack += ('A\n' % font)
+    if fonts:
+        fonts = '\n' % fonts
+
+    fallback = test.get('fallback',
+                        '
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              ')
+
+    desc = test.get('desc', '')
+    escaped_desc = _simpleEscapeJS(desc)
+
+    attributes = test.get('attributes', '')
+    if attributes:
+        context_args = "'2d', %s" % attributes.strip()
+        attributes = ', ' + attributes.strip()
+    else:
+        context_args = "'2d'"
+
+    template_params = {
+        'name': name,
+        'desc': desc,
+        'escaped_desc': escaped_desc,
+        'notes': notes,
+        'images': images,
+        'fonts': fonts,
+        'fonthack': fonthack,
+        'timeout': timeout,
+        'timeout_js': timeout_js,
+        'canvas': canvas,
+        'width': width,
+        'height': height,
+        'expected': expectation_html,
+        'code': code,
+        'fallback': fallback,
+        'attributes': attributes,
+        'context_args': context_args
+    }
+
+    test_path = os.path.join(test_output_dir, sub_dir, name)
+    if 'manual' in test:
+        test_path += '-manual'
+
+    if is_offscreen_canvas:
+        pathlib.Path(f'{test_path}.html').write_text(
+            templates['offscreen'] % template_params, 'utf-8')
+        pathlib.Path(f'{test_path}.worker.js').write_text(
+            templates['worker'] % template_params, 'utf-8')
+    else:
+        pathlib.Path(f'{test_path}.html').write_text(
+            templates['element'] % template_params, 'utf-8')
+
+
+def genTestUtils(TESTOUTPUTDIR: str, IMAGEOUTPUTDIR: str, TEMPLATEFILE: str,
+                 NAME2DIRFILE: str, ISOFFSCREENCANVAS: bool) -> None:
+    # Run with --test argument to run unit tests
+    if len(sys.argv) > 1 and sys.argv[1] == '--test':
+        doctest = importlib.import_module('doctest')
+        doctest.testmod()
+        sys.exit()
+
+    templates = yaml.safe_load(pathlib.Path(TEMPLATEFILE).read_text())
+    name_to_sub_dir = yaml.safe_load(pathlib.Path(NAME2DIRFILE).read_text())
+
+    tests = []
+    test_yaml_directory = 'yaml/element'
+    if ISOFFSCREENCANVAS:
+        test_yaml_directory = 'yaml/offscreen'
+    TESTSFILES = [
+        os.path.join(test_yaml_directory, f)
+        for f in os.listdir(test_yaml_directory) if f.endswith('.yaml')
+    ]
+    for t in sum(
+        [yaml.safe_load(pathlib.Path(f).read_text()) for f in TESTSFILES], []):
+        if 'DISABLED' in t:
+            continue
+        if 'meta' in t:
+            eval(compile(t['meta'], '', 'exec'), {},
+                 {'tests': tests})
+        else:
+            tests.append(t)
+
+    # Ensure the test output directories exist.
+    testdirs = [TESTOUTPUTDIR, IMAGEOUTPUTDIR]
+    for sub_dir in set(name_to_sub_dir.values()):
+        testdirs.append('%s/%s' % (TESTOUTPUTDIR, sub_dir))
+    for d in testdirs:
+        try:
+            os.mkdir(d)
+        except FileExistsError:
+            pass  # Ignore if it already exists.
+
+    used_tests = {}
+    for test in tests:
+        name = test['name']
+        print('\r(%s)' % name, ' ' * 32, '\t')
+
+        if name in used_tests:
+            print('Test %s is defined twice' % name)
+        used_tests[name] = 1
+
+        sub_dir = _get_test_sub_dir(name, name_to_sub_dir)
+        _generate_test(test, templates, sub_dir, TESTOUTPUTDIR, IMAGEOUTPUTDIR,
+                       ISOFFSCREENCANVAS)
+
+    print()
diff --git a/testing/web-platform/tests/html/canvas/tools/gentestutilsunion.py b/testing/web-platform/tests/html/canvas/tools/gentestutilsunion.py
new file mode 100644
index 0000000000..bf5fdeee50
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/tools/gentestutilsunion.py
@@ -0,0 +1,617 @@
+# Current code status:
+#
+# This was originally written by Philip Taylor for use at
+# http://philip.html5.org/tests/canvas/suite/tests/
+#
+# It has been adapted for use with the Web Platform Test Suite suite at
+# https://github.com/web-platform-tests/wpt/
+#
+# The original version had a number of now-removed features (multiple versions
+# of each test case of varying verbosity, Mozilla mochitests, semi-automated
+# test harness). It also had a different directory structure.
+
+# To update or add test cases:
+#
+# * Modify the tests*.yaml files.
+#  - 'name' is an arbitrary hierarchical name to help categorise tests.
+#  - 'desc' is a rough description of what behaviour the test aims to test.
+#  - 'code' is JavaScript code to execute, with some special commands starting
+#    with '@'.
+#  - 'expected' is what the final canvas output should be: a string 'green' or
+#    'clear' (100x50 images in both cases), or a string 'size 100 50' (or any
+#    other size) followed by Python code using Pycairo to generate the image.
+#
+# * Run "./build.sh".
+# This requires a few Python modules which might not be ubiquitous.
+# It will usually emit some warnings, which ideally should be fixed but can
+# generally be safely ignored.
+#
+# * Test the tests, add new ones to Git, remove deleted ones from Git, etc.
+
+from typing import Any, List, Mapping, MutableMapping, Optional, Tuple
+
+import re
+import collections
+import dataclasses
+import enum
+import importlib
+import itertools
+import os
+import pathlib
+import sys
+import textwrap
+
+try:
+    import cairocffi as cairo  # type: ignore
+except ImportError:
+    import cairo
+
+try:
+    # Compatible and lots faster.
+    import syck as yaml  # type: ignore
+except ImportError:
+    import yaml
+
+
+class Error(Exception):
+    """Base class for all exceptions raised by this module"""
+
+
+class InvalidTestDefinitionError(Error):
+    """Raised on invalid test definition."""
+
+
+def _simpleEscapeJS(string: str) -> str:
+    return string.replace('\\', '\\\\').replace('"', '\\"')
+
+
+def _escapeJS(string: str) -> str:
+    string = _simpleEscapeJS(string)
+    # Kind of an ugly hack, for nicer failure-message output.
+    string = re.sub(r'\[(\w+)\]', r'[\\""+(\1)+"\\"]', string)
+    return string
+
+
+def _unroll(text: str) -> str:
+    """Unrolls text with all possible permutations of the parameter lists.
+
+    Example:
+    >>> print _unroll('f = {: <1 | 2 | 3>};')
+    // a
+    f = {a: 1};
+    f = {a: 2};
+    f = {a: 3};
+    // b
+    f = {b: 1};
+    f = {b: 2};
+    f = {b: 3};
+    """
+    patterns = []  # type: List[Tuple[str, List[str]]]
+    while match := re.search(r'<([^>]+)>', text):
+        key = f'@unroll_pattern_{len(patterns)}'
+        values = text[match.start(1):match.end(1)]
+        text = text[:match.start(0)] + key + text[match.end(0):]
+        patterns.append((key, [value.strip() for value in values.split('|')]))
+
+    def unroll_patterns(text: str,
+                        patterns: List[Tuple[str, List[str]]],
+                        label: Optional[str] = None) -> List[str]:
+        if not patterns:
+            return [text]
+        patterns = patterns.copy()
+        key, values = patterns.pop(0)
+        return (['// ' + label] if label else []) + list(
+            itertools.chain.from_iterable(
+                unroll_patterns(text.replace(key, value), patterns, value)
+                for value in values))
+
+    result = '\n'.join(unroll_patterns(text, patterns))
+    return result
+
+
+def _expand_nonfinite(method: str, argstr: str, tail: str) -> str:
+    """
+    >>> print _expand_nonfinite('f', '<0 a>, <0 b>', ';')
+    f(a, 0);
+    f(0, b);
+    f(a, b);
+    >>> print _expand_nonfinite('f', '<0 a>, <0 b c>, <0 d>', ';')
+    f(a, 0, 0);
+    f(0, b, 0);
+    f(0, c, 0);
+    f(0, 0, d);
+    f(a, b, 0);
+    f(a, b, d);
+    f(a, 0, d);
+    f(0, b, d);
+    """
+    # argstr is ", ..." (where usually
+    # 'invalid' is Infinity/-Infinity/NaN).
+    args = []
+    for arg in argstr.split(', '):
+        match = re.match('<(.*)>', arg)
+        if match is None:
+            raise InvalidTestDefinitionError(
+                f"Expected arg to match format '<(.*)>', but was: {arg}")
+        a = match.group(1)
+        args.append(a.split(' '))
+    calls = []
+    # Start with the valid argument list.
+    call = [args[j][0] for j in range(len(args))]
+    # For each argument alone, try setting it to all its invalid values:
+    for i in range(len(args)):
+        for a in args[i][1:]:
+            c2 = call[:]
+            c2[i] = a
+            calls.append(c2)
+    # For all combinations of >= 2 arguments, try setting them to their
+    # first invalid values. (Don't do all invalid values, because the
+    # number of combinations explodes.)
+    def f(c: List[str], start: int, depth: int) -> None:
+        for i in range(start, len(args)):
+            if len(args[i]) > 1:
+                a = args[i][1]
+                c2 = c[:]
+                c2[i] = a
+                if depth > 0:
+                    calls.append(c2)
+                f(c2, i + 1, depth + 1)
+
+    f(call, 0, 0)
+
+    return '\n'.join('%s(%s)%s' % (method, ', '.join(c), tail) for c in calls)
+
+
+def _get_test_sub_dir(name: str, name_to_sub_dir: Mapping[str, str]) -> str:
+    for prefix in sorted(name_to_sub_dir.keys(), key=len, reverse=True):
+        if name.startswith(prefix):
+            return name_to_sub_dir[prefix]
+    raise InvalidTestDefinitionError(
+        'Test "%s" has no defined target directory mapping' % name)
+
+
+def _remove_extra_newlines(text: str) -> str:
+    """Remove newlines if a backslash is found at end of line."""
+    # Lines ending with '\' gets their newline character removed.
+    text = re.sub(r'\\\n', '', text, flags=re.MULTILINE | re.DOTALL)
+
+    # Lines ending with '\-' gets their newline and any leading white spaces on
+    # the following line removed.
+    text = re.sub(r'\\-\n\s*', '', text, flags=re.MULTILINE | re.DOTALL)
+    return text
+
+def _expand_test_code(code: str) -> str:
+    code = _remove_extra_newlines(code)
+
+    # Unroll expressions with a cross-product-style parameter expansion.
+    code = re.sub(r'@unroll ([^;]*;)', lambda m: _unroll(m.group(1)), code)
+
+    code = re.sub(r'@nonfinite ([^(]+)\(([^)]+)\)(.*)', lambda m:
+                  _expand_nonfinite(m.group(1), m.group(2), m.group(3)),
+                  code)  # Must come before '@assert throws'.
+
+    code = re.sub(r'@assert pixel (\d+,\d+) == (\d+,\d+,\d+,\d+);',
+                  r'_assertPixel(canvas, \1, \2);', code)
+
+    code = re.sub(r'@assert pixel (\d+,\d+) ==~ (\d+,\d+,\d+,\d+);',
+                  r'_assertPixelApprox(canvas, \1, \2, 2);', code)
+
+    code = re.sub(r'@assert pixel (\d+,\d+) ==~ (\d+,\d+,\d+,\d+) \+/- (\d+);',
+                  r'_assertPixelApprox(canvas, \1, \2, \3);', code)
+
+    code = re.sub(r'@assert throws (\S+_ERR) (.*);',
+                  r'assert_throws_dom("\1", function() { \2; });', code)
+
+    code = re.sub(r'@assert throws (\S+Error) (.*);',
+                  r'assert_throws_js(\1, function() { \2; });', code)
+
+    code = re.sub(
+        r'@assert (.*) === (.*);', lambda m: '_assertSame(%s, %s, "%s", "%s");'
+        % (m.group(1), m.group(2), _escapeJS(m.group(1)), _escapeJS(m.group(2))
+           ), code)
+
+    code = re.sub(
+        r'@assert (.*) !== (.*);', lambda m:
+        '_assertDifferent(%s, %s, "%s", "%s");' % (m.group(1), m.group(
+            2), _escapeJS(m.group(1)), _escapeJS(m.group(2))), code)
+
+    code = re.sub(
+        r'@assert (.*) =~ (.*);', lambda m: 'assert_regexp_match(%s, %s);' % (
+            m.group(1), m.group(2)), code)
+
+    code = re.sub(
+        r'@assert (.*);', lambda m: '_assert(%s, "%s");' % (m.group(
+            1), _escapeJS(m.group(1))), code)
+
+    code = re.sub(r' @moz-todo', '', code)
+
+    code = re.sub(r'@moz-UniversalBrowserRead;', '', code)
+
+    assert ('@' not in code)
+
+    return code
+
+
+class CanvasType(str, enum.Enum):
+    HTML_CANVAS = 'htmlcanvas'
+    OFFSCREEN_CANVAS = 'offscreencanvas'
+
+
+def _get_enabled_canvas_types(test: Mapping[str, Any]) -> List[CanvasType]:
+    return [CanvasType(t.lower()) for t in test.get('canvasType', CanvasType)]
+
+
+@dataclasses.dataclass
+class TestConfig:
+    out_dir: str
+    image_out_dir: str
+    enabled: bool
+
+
+_CANVAS_SIZE_REGEX = re.compile(r'(?P.*), (?P.*)',
+                                re.MULTILINE | re.DOTALL)
+
+
+def _get_canvas_size(test: Mapping[str, Any]):
+    size = test.get('size', '100, 50')
+    match = _CANVAS_SIZE_REGEX.match(size)
+    if not match:
+        raise InvalidTestDefinitionError(
+            'Invalid canvas size "%s" in test %s. Expected a string matching '
+            'this pattern: "%%s, %%s" %% (width, height)' %
+            (size, test['name']))
+    return match.group('width'), match.group('height')
+
+
+def _write_reference_test(is_js_ref: bool, templates: Mapping[str, str],
+                          template_params: MutableMapping[str, str],
+                          ref_code: str, canvas_path: Optional[str],
+                          offscreen_path: Optional[str]):
+    ref_code = ref_code.strip()
+    ref_code = textwrap.indent(ref_code, '  ') if is_js_ref else ref_code
+    ref_template_name = 'element_ref_test' if is_js_ref else 'html_ref_test'
+
+    code = template_params['code']
+    template_params['code'] = textwrap.indent(code, '  ')
+    if canvas_path:
+        pathlib.Path(f'{canvas_path}.html').write_text(
+            templates['element_ref_test'] % template_params, 'utf-8')
+    if offscreen_path:
+        pathlib.Path(f'{offscreen_path}.html').write_text(
+            templates['offscreen_ref_test'] % template_params, 'utf-8')
+        template_params['code'] = textwrap.indent(code, '    ')
+        pathlib.Path(f'{offscreen_path}.w.html').write_text(
+            templates['worker_ref_test'] % template_params, 'utf-8')
+
+    template_params['code'] = ref_code
+    template_params['links'] = ''
+    template_params['fuzzy'] = ''
+    if canvas_path:
+        pathlib.Path(f'{canvas_path}-expected.html').write_text(
+            templates[ref_template_name] % template_params, 'utf-8')
+    if offscreen_path:
+        pathlib.Path(f'{offscreen_path}-expected.html').write_text(
+            templates[ref_template_name] % template_params, 'utf-8')
+
+
+def _write_testharness_test(templates: Mapping[str, str],
+                            template_params: MutableMapping[str, str],
+                            canvas_path: Optional[str],
+                            offscreen_path: Optional[str]):
+    # Create test cases for canvas and offscreencanvas.
+    code = template_params['code']
+    template_params['code'] = textwrap.indent(code, '  ')
+    if canvas_path:
+        pathlib.Path(f'{canvas_path}.html').write_text(
+            templates['element'] % template_params, 'utf-8')
+
+    if offscreen_path:
+        offscreen_template = templates['offscreen']
+        worker_template = templates['worker']
+
+        if ('then(t_pass, t_fail);' in code):
+            offscreen_template = offscreen_template.replace('t.done();\n', '')
+            worker_template = worker_template.replace('t.done();\n', '')
+
+        pathlib.Path(f'{offscreen_path}.html').write_text(
+            offscreen_template % template_params, 'utf-8')
+        pathlib.Path(f'{offscreen_path}.worker.js').write_text(
+            worker_template % template_params, 'utf-8')
+
+
+def _expand_template(template: str, template_params: Mapping[str, str]) -> str:
+    # Remove whole line comments.
+    template = re.sub(r'^ *#.*?\n', '', template, flags=re.MULTILINE)
+    # Remove trailing line comments.
+    template = re.sub(r' *#.*?$', '', template, flags=re.MULTILINE)
+
+    # Unwrap lines ending with a backslash.
+    template = _remove_extra_newlines(template)
+
+    content_without_nested_if = r'((?:(?!{%\s*(?:if|else|endif)[^%]*%}).)*?)'
+
+    # Resolve {% if  %}{% else %}{% endif %}
+    if_else_regex = re.compile(
+        r'{%\s*if\s*([^\s%]+)\s*%}' +  # {% if  %}
+        content_without_nested_if +    # content
+        r'{%\s*else\s*%}' +            # {% else %}
+        content_without_nested_if +    # alternate
+        r'{%\s*endif\s*%}',            # {% endif %}
+        flags=re.MULTILINE | re.DOTALL)
+    while match := if_else_regex.search(template):
+        condition, content, alternate = match.groups()
+        substitution = content if template_params[condition] else alternate
+        template = (
+            template[:match.start(0)] + substitution + template[match.end(0):])
+
+    # Resolve {% if  %}{% endif %}
+    if_regex = re.compile(
+        r'{%\s*if\s*([^\s%]+)\s*%}' +  # {% if  %}
+        content_without_nested_if +    # content
+        r'{%\s*endif\s*%}',            # {% endif %}
+        flags=re.MULTILINE | re.DOTALL)
+    while match := if_regex.search(template):
+        condition, content = match.groups()
+        substitution = content if template_params[condition] else ''
+        template = (
+            template[:match.start(0)] + substitution + template[match.end(0):])
+
+    return template
+
+
+def _expand_templates(templates: Mapping[str, str],
+                      params: Mapping[str, str]) -> Mapping[str, str]:
+    return {
+        name: _expand_template(template, params)
+        for name, template in templates.items()
+    }
+
+
+def _generate_test(test: Mapping[str, Any], templates: Mapping[str, str],
+                   sub_dir: str, html_canvas_cfg: TestConfig,
+                   offscreen_canvas_cfg: TestConfig) -> None:
+    name = test['name']
+
+    if test.get('expected', '') == 'green' and re.search(
+            r'@assert pixel .* 0,0,0,0;', test['code']):
+        print('Probable incorrect pixel test in %s' % name)
+
+    code_canvas = _expand_test_code(test['code']).strip()
+
+    expectation_html = ''
+    if 'expected' in test and test['expected'] is not None:
+        expected = test['expected']
+        expected_img = None
+        if expected == 'green':
+            expected_img = '/images/green-100x50.png'
+        elif expected == 'clear':
+            expected_img = '/images/clear-100x50.png'
+        else:
+            if ';' in expected:
+                print('Found semicolon in %s' % name)
+            expected = re.sub(
+                r'^size (\d+) (\d+)',
+                r'surface = cairo.ImageSurface(cairo.FORMAT_ARGB32, \1, \2)'
+                r'\ncr = cairo.Context(surface)', expected)
+
+            expected_canvas = (
+                expected + "\nsurface.write_to_png('%s.png')\n" %
+                os.path.join(html_canvas_cfg.image_out_dir, sub_dir, name))
+            eval(compile(expected_canvas, '' % name, 'exec'), {},
+                 {'cairo': cairo})
+
+            expected_offscreencanvas = (
+                expected + "\nsurface.write_to_png('%s.png')\n" % os.path.join(
+                    offscreen_canvas_cfg.image_out_dir, sub_dir, name))
+            eval(compile(expected_offscreencanvas, '' % name, 'exec'),
+                 {}, {'cairo': cairo})
+
+            expected_img = '%s.png' % name
+
+        if expected_img:
+            expectation_html = (
+                '
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Expected output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              '
+                '' % expected_img)
+
+    canvas = ' ' + test['canvas'] if 'canvas' in test else ''
+    width, height = _get_canvas_size(test)
+
+    notes = '
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              %s' % test['notes'] if 'notes' in test else ''
+
+    links = f'\n'
+    fuzzy = ('\n' %
+             test['fuzzy'] if 'fuzzy' in test else '')
+    timeout = ('\n' %
+               test['timeout'] if 'timeout' in test else '')
+    timeout_js = ('// META: timeout=%s\n' % test['timeout']
+                  if 'timeout' in test else '')
+
+    images = ''
+    for src in test.get('images', []):
+        img_id = src.split('/')[-1]
+        if '/' not in src:
+            src = '../images/%s' % src
+        images += '\n' % (src, img_id)
+    for src in test.get('svgimages', []):
+        img_id = src.split('/')[-1]
+        if '/' not in src:
+            src = '../images/%s' % src
+        images += (''
+                   '\n' % (src, img_id))
+    images = images.replace('../images/', '/images/')
+
+    fonts = ''
+    fonthack = ''
+    for font in test.get('fonts', []):
+        fonts += ('@font-face {\n  font-family: %s;\n'
+                  '  src: url("/fonts/%s.ttf");\n}\n' % (font, font))
+        # Browsers require the font to actually be used in the page.
+        if test.get('fonthack', 1):
+            fonthack += ('A\n' % font)
+    if fonts:
+        fonts = '\n' % fonts
+
+    fallback = test.get('fallback',
+                        '
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              FAIL (fallback content)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              ')
+
+    desc = test.get('desc', '')
+    escaped_desc = _simpleEscapeJS(desc)
+
+    attributes = test.get('attributes', '')
+    if attributes:
+        context_args = "'2d', %s" % attributes.strip()
+        attributes = ', ' + attributes.strip()
+    else:
+        context_args = "'2d'"
+
+    is_promise_test = False
+    if 'test_type' in test:
+        if test['test_type'] == 'promise':
+            is_promise_test = True
+        else:
+            raise InvalidTestDefinitionError(
+                f'Test {name}\' test_type is invalid, it only accepts '
+                '"promise" now for creating promise test type in the template '
+                'file.')
+
+    template_params = {
+        'name': name,
+        'desc': desc,
+        'escaped_desc': escaped_desc,
+        'notes': notes,
+        'images': images,
+        'fonts': fonts,
+        'fonthack': fonthack,
+        'timeout': timeout,
+        'timeout_js': timeout_js,
+        'fuzzy': fuzzy,
+        'links': links,
+        'canvas': canvas,
+        'width': width,
+        'height': height,
+        'expected': expectation_html,
+        'code': code_canvas,
+        'fallback': fallback,
+        'attributes': attributes,
+        'context_args': context_args,
+        'promise_test': is_promise_test
+    }
+
+    canvas_path = os.path.join(html_canvas_cfg.out_dir, sub_dir, name)
+    offscreen_path = os.path.join(offscreen_canvas_cfg.out_dir, sub_dir, name)
+    if 'manual' in test:
+        canvas_path += '-manual'
+        offscreen_path += '-manual'
+
+    js_reference = test.get('reference')
+    html_reference = test.get('html_reference')
+    if js_reference is not None and html_reference is not None:
+        raise InvalidTestDefinitionError(
+            f'Test {name} is invalid, "reference" and "html_reference" can\'t '
+            'both be specified at the same time.')
+
+    templates = _expand_templates(templates, template_params)
+
+    ref_code = js_reference or html_reference
+    if ref_code is not None:
+        _write_reference_test(
+            js_reference is not None, templates, template_params, ref_code,
+            canvas_path if html_canvas_cfg.enabled else None,
+            offscreen_path if offscreen_canvas_cfg.enabled else None)
+    else:
+        _write_testharness_test(
+            templates, template_params,
+            canvas_path if html_canvas_cfg.enabled else None,
+            offscreen_path if offscreen_canvas_cfg.enabled else None)
+
+
+def genTestUtils_union(TEMPLATEFILE: str, NAME2DIRFILE: str) -> None:
+    CANVASOUTPUTDIR = '../element'
+    CANVASIMAGEOUTPUTDIR = '../element'
+    OFFSCREENCANVASOUTPUTDIR = '../offscreen'
+    OFFSCREENCANVASIMAGEOUTPUTDIR = '../offscreen'
+
+    # Run with --test argument to run unit tests.
+    if len(sys.argv) > 1 and sys.argv[1] == '--test':
+        doctest = importlib.import_module('doctest')
+        doctest.testmod()
+        sys.exit()
+
+    templates = yaml.safe_load(pathlib.Path(TEMPLATEFILE).read_text())
+    name_to_sub_dir = yaml.safe_load(pathlib.Path(NAME2DIRFILE).read_text())
+
+    tests = []
+    test_yaml_directory = 'yaml-new'
+    TESTSFILES = [
+        os.path.join(test_yaml_directory, f)
+        for f in os.listdir(test_yaml_directory) if f.endswith('.yaml')
+    ]
+    for t in sum(
+        [yaml.safe_load(pathlib.Path(f).read_text()) for f in TESTSFILES], []):
+        if 'DISABLED' in t:
+            continue
+        if 'meta' in t:
+            eval(compile(t['meta'], '', 'exec'), {},
+                 {'tests': tests})
+        else:
+            tests.append(t)
+
+    # Ensure the test output directories exist.
+    testdirs = [
+        CANVASOUTPUTDIR, OFFSCREENCANVASOUTPUTDIR, CANVASIMAGEOUTPUTDIR,
+        OFFSCREENCANVASIMAGEOUTPUTDIR
+    ]
+    for sub_dir in set(name_to_sub_dir.values()):
+        testdirs.append('%s/%s' % (CANVASOUTPUTDIR, sub_dir))
+        testdirs.append('%s/%s' % (OFFSCREENCANVASOUTPUTDIR, sub_dir))
+    for d in testdirs:
+        try:
+            os.mkdir(d)
+        except FileExistsError:
+            pass  # Ignore if it already exists,
+
+    used_tests = collections.defaultdict(set)
+    for original_test in tests:
+        variants = original_test.get('variants', {'': dict()})
+        for variant_name, variant_params in variants.items():
+            test = original_test.copy()
+            if variant_name or variant_params:
+                test['name'] += '.' + variant_name
+                test['code'] = test['code'] % variant_params
+                if 'reference' in test:
+                    test['reference'] = test['reference'] % variant_params
+                if 'html_reference' in test:
+                    test['html_reference'] = (
+                        test['html_reference'] % variant_params)
+                test.update(variant_params)
+
+            name = test['name']
+            print('\r(%s)' % name, ' ' * 32, '\t')
+
+            enabled_canvas_types = _get_enabled_canvas_types(test)
+
+            already_tested = used_tests[name].intersection(
+                enabled_canvas_types)
+            if already_tested:
+                raise InvalidTestDefinitionError(
+                    f'Test {name} is defined twice for types {already_tested}')
+            used_tests[name].update(enabled_canvas_types)
+
+            sub_dir = _get_test_sub_dir(name, name_to_sub_dir)
+            _generate_test(
+                test,
+                templates,
+                sub_dir,
+                html_canvas_cfg=TestConfig(
+                    out_dir=CANVASOUTPUTDIR,
+                    image_out_dir=CANVASIMAGEOUTPUTDIR,
+                    enabled=CanvasType.HTML_CANVAS in enabled_canvas_types),
+                offscreen_canvas_cfg=TestConfig(
+                    out_dir=OFFSCREENCANVASOUTPUTDIR,
+                    image_out_dir=OFFSCREENCANVASIMAGEOUTPUTDIR,
+                    enabled=CanvasType.OFFSCREEN_CANVAS in
+                    enabled_canvas_types))
+
+    print()
diff --git a/testing/web-platform/tests/html/canvas/tools/name2dir-canvas.yaml b/testing/web-platform/tests/html/canvas/tools/name2dir-canvas.yaml
new file mode 100644
index 0000000000..c3818ebc76
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/tools/name2dir-canvas.yaml
@@ -0,0 +1,54 @@
+2d.transformation:                    "transformations"
+2d.color.space:                       'wide-gamut-canvas'
+2d.composite:                         "compositing"
+2d.coordinatespace:                   "conformance-requirements"
+2d.missingargs:                       "conformance-requirements"
+2d.type.delete:                       "conformance-requirements"
+2d.voidreturn:                        "conformance-requirements"
+2d.drawImage:                         "drawing-images-to-the-canvas"
+2d.clearRect:                         "drawing-rectangles-to-the-canvas"
+2d.fillRect:                          "drawing-rectangles-to-the-canvas"
+2d.strokeRect:                        "drawing-rectangles-to-the-canvas"
+2d.text.draw:                         "drawing-text-to-the-canvas"
+2d.text.draw.space.basic:             "drawing-text-to-the-canvas"
+2d.text.draw.space.collapse:          "drawing-text-to-the-canvas"
+2d.text.measure:                      "drawing-text-to-the-canvas"
+2d.fillStyle:                         "fill-and-stroke-styles"
+2d.gradient:                          "fill-and-stroke-styles"
+2d.pattern:                           "fill-and-stroke-styles"
+2d.strokeStyle:                       "fill-and-stroke-styles"
+2d.path:                              "path-objects"
+2d.imageData:                         "pixel-manipulation"
+2d.reset:                             "reset"
+2d.shadow:                            "shadows"
+2d.filter:                            "filters"
+2d.text.align:                        "text-styles"
+2d.text.baseline:                     "text-styles"
+2d.text.font:                         "text-styles"
+2d.text.draw.baseline:                "text-styles"
+2d.text.draw.space:                   "text-styles"
+2d.text.measure.width.space:          "text-styles"
+2d.text.draw.space.collapse.end:      "text-styles"
+2d.text.draw.space.collapse.other:    "text-styles"
+2d.text.draw.space.collapse.space:    "text-styles"
+2d.text.draw.space.collapse.start:    "text-styles"
+2d.state:                             "the-canvas-state"
+2d.scrollPathIntoView:                "scroll"
+2d.video:                             "video"
+2d.canvas:                            "../../../html/semantics/embedded-content/the-canvas-element"
+2d.getcontext:                        "../../../html/semantics/embedded-content/the-canvas-element"
+2d.scaled:                            "../../../html/semantics/embedded-content/the-canvas-element"
+2d.type:                              "../../../html/semantics/embedded-content/the-canvas-element"
+context:                              "../../../html/semantics/embedded-content/the-canvas-element"
+fallback:                             "../../../html/semantics/embedded-content/the-canvas-element"
+initial:                              "../../../html/semantics/embedded-content/the-canvas-element"
+security:                             "../../../html/semantics/embedded-content/the-canvas-element"
+size:                                 "../../../html/semantics/embedded-content/the-canvas-element"
+toBlob:                               "../../../html/semantics/embedded-content/the-canvas-element"
+toDataURL:                            "../../../html/semantics/embedded-content/the-canvas-element"
+type:                                 "../../../html/semantics/embedded-content/the-canvas-element"
+2d.offscreencanvas:                   "the-offscreen-canvas"
+2d.offscreencanva.getcontext:         "the-offscreen-canvas"
+2d.offscreencanva.context:            "the-offscreen-canvas"
+2d.offscreencanva.initial:            "the-offscreen-canvas"
+2d.offscreencanva.size:               "the-offscreen-canvas"
diff --git a/testing/web-platform/tests/html/canvas/tools/name2dir-offscreen.yaml b/testing/web-platform/tests/html/canvas/tools/name2dir-offscreen.yaml
new file mode 100644
index 0000000000..807b09507b
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/tools/name2dir-offscreen.yaml
@@ -0,0 +1,25 @@
+2d.state:                             "the-canvas-state"
+2d.transformation:                    "transformations"
+2d.color.space:                       "wide-gamut-canvas"
+2d.composite:                         "compositing"
+2d.fillStyle:                         "fill-and-stroke-styles"
+2d.gradient:                          "fill-and-stroke-styles"
+2d.pattern:                           "fill-and-stroke-styles"
+2d.strokeStyle:                       "fill-and-stroke-styles"
+2d.shadow:                            "shadows"
+2d.filter:                            "filters"
+2d.clearRect:                         "drawing-rectangles-to-the-canvas"
+2d.fillRect:                          "drawing-rectangles-to-the-canvas"
+2d.strokeRect:                        "drawing-rectangles-to-the-canvas"
+2d.drawImage:                         "drawing-images-to-the-canvas"
+2d.imageData:                         "pixel-manipulation"
+2d.path:                              "path-objects"
+2d.text:                              "text"
+2d.coordinatespace:                   "conformance-requirements"
+2d.missingargs:                       "conformance-requirements"
+2d.voidreturn:                        "conformance-requirements"
+2d.canvas:                            "the-offscreen-canvas"
+2d.getcontext:                        "the-offscreen-canvas"
+context:                              "the-offscreen-canvas"
+initial:                              "the-offscreen-canvas"
+size:                                 "the-offscreen-canvas"
diff --git a/testing/web-platform/tests/html/canvas/tools/name2dir.yaml b/testing/web-platform/tests/html/canvas/tools/name2dir.yaml
new file mode 100644
index 0000000000..d6871f2852
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/tools/name2dir.yaml
@@ -0,0 +1,43 @@
+2d.transformation:                    "transformations"
+2d.color.space:                       'wide-gamut-canvas'
+2d.composite:                         "compositing"
+2d.conformance.requirements:          "conformance-requirements"
+2d.drawImage:                         "drawing-images-to-the-canvas"
+2d.clearRect:                         "drawing-rectangles-to-the-canvas"
+2d.fillRect:                          "drawing-rectangles-to-the-canvas"
+2d.strokeRect:                        "drawing-rectangles-to-the-canvas"
+2d.text.draw:                         "drawing-text-to-the-canvas"
+2d.text.draw.space.basic:             "drawing-text-to-the-canvas"
+2d.text.draw.space.collapse:          "drawing-text-to-the-canvas"
+2d.text.measure:                      "drawing-text-to-the-canvas"
+2d.fillStyle:                         "fill-and-stroke-styles"
+2d.gradient:                          "fill-and-stroke-styles"
+2d.pattern:                           "fill-and-stroke-styles"
+2d.strokeStyle:                       "fill-and-stroke-styles"
+2d.line:                              "line-styles"
+2d.path:                              "path-objects"
+2d.imageData:                         "pixel-manipulation"
+2d.reset:                             "reset"
+2d.shadow:                            "shadows"
+2d.filter:                            "filters"
+2d.layer:                             "layers"
+2d.text.align:                        "text-styles"
+2d.text.baseline:                     "text-styles"
+2d.text.font:                         "text-styles"
+2d.text.draw.baseline:                "text-styles"
+2d.text.draw.space:                   "text-styles"
+2d.text.measure.width.space:          "text-styles"
+2d.text.draw.space.collapse.end:      "text-styles"
+2d.text.draw.space.collapse.other:    "text-styles"
+2d.text.draw.space.collapse.space:    "text-styles"
+2d.text.draw.space.collapse.start:    "text-styles"
+2d.state:                             "the-canvas-state"
+2d.scrollPathIntoView:                "scroll"
+2d.video:                             "video"
+2d.canvas:                            "../../../html/semantics/embedded-content/the-canvas-element"
+2d.canvas.getcontext:                 "../../../html/semantics/embedded-content/the-canvas-element"
+2d.canvas.scaled:                     "../../../html/semantics/embedded-content/the-canvas-element"
+2d.canvas.type:                       "../../../html/semantics/embedded-content/the-canvas-element"
+2d.canvas.initial:                    "../../../html/semantics/embedded-content/the-canvas-element"
+2d.canvas.size:                       "../../../html/semantics/embedded-content/the-canvas-element"
+2d.canvas.type:                       "../../../html/semantics/embedded-content/the-canvas-element"
diff --git a/testing/web-platform/tests/html/canvas/tools/templates-new.yaml b/testing/web-platform/tests/html/canvas/tools/templates-new.yaml
new file mode 100644
index 0000000000..7d8ebfccf5
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/tools/templates-new.yaml
@@ -0,0 +1,237 @@
+offscreen: |
+    
+    
+    OffscreenCanvas test: %(name)s
+    %(timeout)s\
+    
+    
+    
+
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              %(name)s
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              %(desc)s
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+    %(notes)s
+    
+
+worker: |
+    %(timeout_js)s\
+    // DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+    // OffscreenCanvas test in a worker:%(name)s
+    // Description:%(desc)s
+    // Note:%(notes)s
+
+    importScripts("/resources/testharness.js");
+    importScripts("/html/canvas/resources/canvas-tests.js");
+
+    ## Promise vs. async test header:
+    {% if promise_test %}\
+    promise_test(async t => {
+    {% else %}\
+    var t = async_test("%(escaped_desc)s");
+    var t_pass = t.done.bind(t);
+    var t_fail = t.step_func(function(reason) {
+        throw reason;
+    });
+    t.step(function() {
+    {% endif %}\
+
+      ## Test body:
+      var canvas = new OffscreenCanvas(%(width)s, %(height)s);
+      var ctx = canvas.getContext(%(context_args)s);
+
+    %(code)s
+      t.done();\
+
+    ## Promise vs. async test footer:
+    {% if promise_test %}\
+    }, "%(desc)s");
+    {% else %}\
+    });
+    {% endif %}\
+    done();
+
+element: |
+    
+    
+    Canvas test: %(name)s
+    
+    
+    
+    
+    %(fonts)s\
+    
+
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              %(name)s
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              %(desc)s
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+
+    %(notes)s
+    %(fonthack)s\
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
+    \-
+      %(fallback)s\
+    
+    %(expected)s
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                \
+
+    
+    %(images)s
+
+offscreen_ref_test: |-
+    
+    
+    {% if promise_test %}\
+    
+    {% endif %}\
+    %(links)s\
+    %(fuzzy)s\
+    %(timeout)s\
+    Canvas test: %(name)s
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                %(name)s
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                %(desc)s
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+    %(fonts)s%(fonthack)s%(notes)s
+      %(fallback)s
+    
+    
+      const canvas = new OffscreenCanvas(%(width)s, %(height)s);
+      const ctx = canvas.getContext(%(context_args)s);
+
+    %(code)s
+
+      const outputCanvas = document.getElementById("canvas");
+      outputCanvas.getContext(%(context_args)s).drawImage(canvas, 0, 0);
+    {% if promise_test %}\
+      document.documentElement.classList.remove("reftest-wait");
+    {% endif %}\
+    
+    %(images)s\
+    {% if promise_test %}{% endif %}
+
+worker_ref_test: |
+    
+    
+    
+    %(links)s\
+    %(fuzzy)s\
+    %(timeout)s\
+    Canvas test: %(name)s
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                %(name)s
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                %(desc)s
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+    %(fonts)s%(fonthack)s%(notes)s
+      %(fallback)s
+    
+    
+    
+    %(images)s\
+    
+
+element_ref_test: |-
+    
+    
+    {% if promise_test %}\
+    
+    {% endif %}\
+    %(links)s\
+    %(fuzzy)s\
+    %(timeout)s\
+    Canvas test: %(name)s
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                %(name)s
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                %(desc)s
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+    %(fonts)s%(fonthack)s%(notes)s
+      %(fallback)s
+    
+    
+      const canvas = document.getElementById("canvas");
+      const ctx = canvas.getContext(%(context_args)s);
+
+    %(code)s
+    {% if promise_test %}\
+      document.documentElement.classList.remove("reftest-wait");
+    {% endif %}\
+    
+    %(images)s\
+    {% if promise_test %}{% endif %}
+
+
+html_ref_test: |-
+    
+    
+    %(links)s\
+    %(fuzzy)s\
+    %(timeout)s\
+    Canvas test: %(name)s
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                %(name)s
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                %(desc)s
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+    %(fonts)s%(fonthack)s%(notes)s
+    %(code)s
+    %(images)s
diff --git a/testing/web-platform/tests/html/canvas/tools/templates.yaml b/testing/web-platform/tests/html/canvas/tools/templates.yaml
new file mode 100644
index 0000000000..cb11f76db6
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/tools/templates.yaml
@@ -0,0 +1,79 @@
+offscreen: |
+    
+    
+    OffscreenCanvas test: %(name)s%(timeout)s
+    
+    
+    
+
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                %(name)s
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                %(desc)s
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
+    %(notes)s
+    
+
+
+worker: |
+    %(timeout_js)s// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+    // OffscreenCanvas test in a worker:%(name)s
+    // Description:%(desc)s
+    // Note:%(notes)s
+
+    importScripts("/resources/testharness.js");
+    importScripts("/html/canvas/resources/canvas-tests.js");
+
+    var t = async_test("%(escaped_desc)s");
+    var t_pass = t.done.bind(t);
+    var t_fail = t.step_func(function(reason) {
+        throw reason;
+    });
+    t.step(function() {
+
+    var canvas = new OffscreenCanvas(%(width)s, %(height)s);
+    var ctx = canvas.getContext(%(context_args)s);
+
+    %(code)s
+    });
+    done();
+
+
+element: |
+    
+    
+    Canvas test: %(name)s
+    
+    
+    
+    
+    %(fonts)s
+
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                %(name)s
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                %(desc)s
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+
+    %(notes)s
+    %(fonthack)s
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                Actual output:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+    %(fallback)s
+    %(expected)s
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
+    %(images)s
diff --git a/testing/web-platform/tests/html/canvas/tools/yaml-new/color_space.yaml b/testing/web-platform/tests/html/canvas/tools/yaml-new/color_space.yaml
new file mode 100644
index 0000000000..ba5d93e0b0
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/tools/yaml-new/color_space.yaml
@@ -0,0 +1,329 @@
+- name: 2d.color.space.p3.to.p3
+  desc: test getImageData with display-p3 and uint8 from display p3 uint8 canvas
+  attributes: |
+    {colorSpace: "display-p3"}
+  code: |
+    var color_style = 'rgb(50, 100, 150)';
+    // [0.24304, 0.38818, 0.57227, 1.0] * 255 = [62, 99, 146, 255]
+    var pixel_expected = [62, 99, 146, 255];
+    var epsilon = 2;
+    ctx.fillStyle = color_style;
+    ctx.fillRect(0, 0, 10, 10);
+
+    var pixel = ctx.getImageData(5, 5, 1, 1, {colorSpace: "display-p3", storageFormat: "uint8"}).data;
+    @assert pixel.length === pixel_expected.length;
+    assert_approx_equals(pixel[0], pixel_expected[0], 2);
+    assert_approx_equals(pixel[1], pixel_expected[1], 2);
+    assert_approx_equals(pixel[2], pixel_expected[2], 2);
+    assert_approx_equals(pixel[3], pixel_expected[3], 2);
+
+- name: 2d.color.space.p3.to.srgb
+  desc: test getImageData with srsb and uint8 from display p3 uint8 canvas
+  attributes: |
+    {colorSpace: "display-p3"}
+  code: |
+    var color_style = 'rgb(50, 100, 150)';
+    var pixel_expected = [50, 100, 150, 255];
+    var epsilon = 2;
+    ctx.fillStyle = color_style;
+    ctx.fillRect(0, 0, 10, 10);
+
+    var pixel = ctx.getImageData(5, 5, 1, 1, {colorSpace: "srgb", storageFormat: "uint8"}).data;
+    @assert pixel.length === pixel_expected.length;
+    assert_approx_equals(pixel[0], pixel_expected[0], 2);
+    assert_approx_equals(pixel[1], pixel_expected[1], 2);
+    assert_approx_equals(pixel[2], pixel_expected[2], 2);
+    assert_approx_equals(pixel[3], pixel_expected[3], 2);
+
+- name: 2d.color.space.p3.toBlob.p3.canvas
+  desc: test if toblob returns p3 data from p3 color space canvas
+  attributes: |
+    {colorSpace: "display-p3"}
+  canvasType:
+    ['HTMLCanvas']
+  code: |
+    ctx.fillStyle = "rgba(155, 27, 27, 1)";
+    ctx.fillRect(0, 0, 1, 1);
+    ctx.fillStyle = "rgba(27, 155, 27, 0)";
+    ctx.fillRect(1, 0, 1, 1);
+    ctx.fillStyle = "rgba(27, 27, 155, 0.5)";
+    ctx.fillRect(0, 1, 1, 1);
+    ctx.fillStyle = "rgba(27, 27, 27, 0.5)";
+    ctx.fillRect(1, 1, 1, 1);
+    expectedPixels = ctx.getImageData(0, 0, 2, 2, {colorSpace: "display-p3"}).data;
+
+    var image = new Image();
+    image.onload = t.step_func_done(function() {
+        var dstCanvas = document.createElement("canvas");
+        dstCanvas.width = 2;
+        dstCanvas.height = 2;
+        var ctx = dstCanvas.getContext('2d', {colorSpace: "display-p3"});
+        ctx.drawImage(image, 0, 0);
+        var actualPixels = ctx.getImageData(0, 0, 2, 2, {colorSpace: "display-p3"}).data;
+        assert_array_approx_equals(actualPixels, expectedPixels, 2);
+    });
+
+    canvas.toBlob(function(blob) {
+        var urlCreator = window.URL || window.webkitURL;
+        image.src = urlCreator.createObjectURL(blob);
+    }, 'image/png', 1);
+
+- name: 2d.color.space.p3.toDataURL.p3.canvas
+  desc: test if toDataURL returns p3 data from canvas with p3 color space
+  attributes: |
+    {colorSpace: "display-p3"}
+  canvasType:
+    ['HTMLCanvas']
+  code: |
+    ctx.fillStyle = "rgba(155, 27, 27, 1)";
+    ctx.fillRect(0, 0, 1, 1);
+    ctx.fillStyle = "rgba(27, 155, 27, 0)";
+    ctx.fillRect(1, 0, 1, 1);
+    ctx.fillStyle = "rgba(27, 27, 155, 0.5)";
+    ctx.fillRect(0, 1, 1, 1);
+    ctx.fillStyle = "rgba(27, 27, 27, 0.5)";
+    ctx.fillRect(1, 1, 1, 1);
+    expectedPixels = ctx.getImageData(0, 0, 2, 2, {colorSpace: "display-p3"}).data;
+
+    var image = new Image();
+    image.onload = t.step_func_done(function() {
+        var dstCanvas = document.createElement("canvas");
+        dstCanvas.width = 2;
+        dstCanvas.height = 2;
+        var ctx = dstCanvas.getContext('2d', {colorSpace: "display-p3"});
+        ctx.drawImage(image, 0, 0);
+        var actualPixels = ctx.getImageData(0, 0, 2, 2, {colorSpace: "display-p3"}).data;
+        assert_array_approx_equals(actualPixels, expectedPixels, 2);
+    });
+    image.src = canvas.toDataURL();
+
+- name: 2d.color.space.p3.toDataURL.jpeg.p3.canvas
+  desc: test if toDataURL('image/jpeg') returns p3 data from canvas with p3 color space
+  attributes: |
+    {colorSpace: "display-p3"}
+  canvasType:
+    ['HTMLCanvas']
+  code: |
+    ctx.fillStyle = "rgba(155, 27, 27, 1)";
+    ctx.fillRect(0, 0, 1, 1);
+    ctx.fillStyle = "rgba(27, 155, 27, 0)";
+    ctx.fillRect(1, 0, 1, 1);
+    ctx.fillStyle = "rgba(27, 27, 155, 0.5)";
+    ctx.fillRect(0, 1, 1, 1);
+    ctx.fillStyle = "rgba(27, 27, 27, 0.5)";
+    ctx.fillRect(1, 1, 1, 1);
+    expectedPixels = ctx.getImageData(0, 0, 2, 2, {colorSpace: "display-p3"}).data;
+
+    var image = new Image();
+    image.onload = t.step_func_done(function() {
+        var dstCanvas = document.createElement("canvas");
+        dstCanvas.width = 2;
+        dstCanvas.height = 2;
+        var ctx = dstCanvas.getContext('2d', {colorSpace: "display-p3"});
+        ctx.drawImage(image, 0, 0);
+        var actualPixels = ctx.getImageData(0, 0, 2, 2, {colorSpace: "display-p3"}).data;
+        assert_array_approx_equals(actualPixels, expectedPixels, 2);
+    });
+    image.src = canvas.toDataURL("image/jpeg");
+
+- name: 2d.color.space.p3.toBlob.with.putImageData
+  desc: Use putImageData to put some p3 data in canvas and test if toBlob returns the same data
+  attributes: |
+    {colorSpace: "display-p3"}
+  canvasType:
+    ['HTMLCanvas']
+  code: |
+    canvas.width = 2;
+    canvas.height = 2;
+
+    // Create an ImageData using createImageData and populate its data array.
+    var image_data = ctx.createImageData(canvas.width, canvas.height, {colorSpace: "display-p3"});
+    var color_data = [[255, 100, 150, 1.0], [255, 100, 150, 0.5],
+                     [255, 100, 150, 0.5], [255, 100, 150, 0]];
+    var data = image_data.data;
+    for (var i = 0; i < data.length / 4; ++i) {
+      data[4*i + 0] = color_data[i][0];
+      data[4*i + 1] = color_data[i][1];
+      data[4*i + 2] = color_data[i][2];
+      data[4*i + 3] = color_data[i][3];
+    }
+    ctx.putImageData(image_data, 0, 0);
+    expectedPixels = ctx.getImageData(0, 0, 2, 2, {colorSpace: "display-p3"}).data;
+
+    var image = new Image();
+    image.onload = t.step_func_done(function() {
+        var dstCanvas = document.createElement("canvas");
+        dstCanvas.width = 2;
+        dstCanvas.height = 2;
+        var ctx = dstCanvas.getContext('2d', {colorSpace: "display-p3"});
+        ctx.drawImage(image, 0, 0);
+        var actualPixels = ctx.getImageData(0, 0, 2, 2, {colorSpace: "display-p3"}).data;
+        assert_array_approx_equals(actualPixels, expectedPixels, 2);
+    });
+    canvas.toBlob(function(blob) {
+        var urlCreator = window.URL || window.webkitURL;
+        image.src = urlCreator.createObjectURL(blob);
+    }, 'image/png', 1);
+
+- name: 2d.color.space.p3.toDataURL.with.putImageData
+  desc: Use putImageData to put some p3 data in canvas and test if toDataURL returns the same data
+  attributes: |
+    {colorSpace: "display-p3"}
+  canvasType:
+    ['HTMLCanvas']
+  code: |
+    canvas.width = 2;
+    canvas.height = 2;
+
+    // Create an ImageData using createImageData and populate its data array.
+    var image_data = ctx.createImageData(canvas.width, canvas.height, {colorSpace: "display-p3"});
+    var color_data = [[255, 100, 150, 1.0], [255, 100, 150, 0.5],
+                     [255, 100, 150, 0.5], [255, 100, 150, 0]];
+    var data = image_data.data;
+    for (var i = 0; i < data.length / 4; ++i) {
+      data[4*i + 0] = color_data[i][0];
+      data[4*i + 1] = color_data[i][1];
+      data[4*i + 2] = color_data[i][2];
+      data[4*i + 3] = color_data[i][3];
+    }
+    ctx.putImageData(image_data, 0, 0);
+    expectedPixels = ctx.getImageData(0, 0, 2, 2, {colorSpace: "display-p3"}).data;
+
+    var image = new Image();
+    image.onload = t.step_func_done(function() {
+        var dstCanvas = document.createElement("canvas");
+        dstCanvas.width = 2;
+        dstCanvas.height = 2;
+        var ctx = dstCanvas.getContext('2d', {colorSpace: "display-p3"});
+        ctx.drawImage(image, 0, 0);
+        var actualPixels = ctx.getImageData(0, 0, 2, 2, {colorSpace: "display-p3"}).data;
+        assert_array_approx_equals(actualPixels, expectedPixels, 2);
+    });
+    image.src = canvas.toDataURL();
+
+- name: 2d.color.space.p3.fillText
+  desc: Test if fillText can be used with a solid display-p3 color
+  attributes: |
+    {colorSpace: "display-p3"}
+  canvasType: ['HTMLCanvas']
+  code: |
+    deferTest();
+
+    const fullRedInP3 = [255, 0, 0, 255];
+    const sRGBRedInP3 = [234, 51, 35, 255];
+
+    canvas.width = 100;
+    canvas.height = 100;
+
+    let f = new FontFace("Ahem", "url(/fonts/Ahem.ttf)");
+    document.fonts.add(f);
+    f.load().then(function() {
+        t.step(function() {
+            ctx.font = "40px Ahem";
+
+            ctx.fillStyle = "#f00";
+            ctx.fillText("A", 0, 50);
+
+            ctx.fillStyle = "black";
+            ctx.fillStyle = "color(display-p3 100% 0 0)";
+            ctx.fillText("A", 50, 50);
+
+            let pixels = ctx.getImageData(0, 0, canvas.width, canvas.height, { colorSpace: "display-p3" }).data;
+            let pixelAt = function(x, y) {
+                let offset = (y * canvas.width + x) * 4;
+                return [pixels[offset], pixels[offset + 1], pixels[offset + 2], pixels[offset + 3]];
+            };
+
+            assert_array_equals(pixelAt(25, 25), sRGBRedInP3);
+            assert_array_equals(pixelAt(75, 25), fullRedInP3);
+
+            t.done();
+        });
+    });
+
+- name: 2d.color.space.p3.strokeText
+  desc: Test if strokeText can be used with a solid display-p3 color
+  attributes: |
+    {colorSpace: "display-p3"}
+  canvasType:
+    ['HTMLCanvas']
+  code: |
+    deferTest();
+
+    const fullRedInP3 = [255, 0, 0, 255];
+    const sRGBRedInP3 = [234, 51, 35, 255];
+
+    canvas.width = 100;
+    canvas.height = 100;
+
+    let f = new FontFace("Ahem", "url(/fonts/Ahem.ttf)");
+    document.fonts.add(f);
+    f.load().then(function() {
+        t.step(function() {
+            ctx.font = "40px Ahem";
+
+            ctx.strokeStyle = "#f00";
+            ctx.lineWidth = 20;
+            ctx.strokeText("A", 0, 50);
+
+            ctx.strokeStyle = "black";
+            ctx.strokeStyle = "color(display-p3 100% 0 0)";
+            ctx.strokeText("A", 50, 50);
+
+            let pixels = ctx.getImageData(0, 0, canvas.width, canvas.height, { colorSpace: "display-p3" }).data;
+            let pixelAt = function(x, y) {
+                let offset = (y * canvas.width + x) * 4;
+                return [pixels[offset], pixels[offset + 1], pixels[offset + 2], pixels[offset + 3]];
+            };
+
+            assert_array_equals(pixelAt(25, 25), sRGBRedInP3);
+            assert_array_equals(pixelAt(75, 25), fullRedInP3);
+
+            t.done();
+        });
+    });
+
+- name: 2d.color.space.p3.fillText.shadow
+  desc: Test if fillText can be used with a display-p3 shadow color
+  attributes: |
+    {colorSpace: "display-p3"}
+  canvasType:
+    ['HTMLCanvas']
+  code: |
+    deferTest();
+
+    const fullRedInP3 = [255, 0, 0, 255];
+    const sRGBRedInP3 = [234, 51, 35, 255];
+
+    canvas.width = 100;
+    canvas.height = 100;
+
+    let f = new FontFace("Ahem", "url(/fonts/Ahem.ttf)");
+    document.fonts.add(f);
+    f.load().then(function() {
+        t.step(function() {
+            ctx.font = "40px Ahem";
+
+            ctx.fillStyle = "black";
+            ctx.shadowBlur = 4;
+            ctx.shadowOffsetX = 0;
+            ctx.shadowOffsetY = 50;
+            ctx.shadowColor = "#f00";
+            ctx.fillText("A", 0, 0);
+
+            ctx.shadowColor = "black";
+            ctx.shadowColor = "color(display-p3 100% 0 0)";
+            ctx.fillText("A", 50, 0);
+
+            let pixels = ctx.getImageData(0, 0, canvas.width, canvas.height, { colorSpace: "display-p3" }).data;
+            let pixelAt = function(x, y) {
+                let offset = (y * canvas.width + x) * 4;
+                return [pixels[offset], pixels[offset + 1], pixels[offset + 2], pixels[offset + 3]];
+            };
+
+            assert_array_equals(pixelAt(25, 25), sRGBRedInP3);
+            assert_array_equals(pixelAt(75, 25), fullRedInP3);
+
+            t.done();
+        });
+    });
diff --git a/testing/web-platform/tests/html/canvas/tools/yaml-new/compositing.yaml b/testing/web-platform/tests/html/canvas/tools/yaml-new/compositing.yaml
new file mode 100644
index 0000000000..0051f07db2
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/tools/yaml-new/compositing.yaml
@@ -0,0 +1,232 @@
+- name: 2d.composite.globalAlpha.range
+  code: |
+    ctx.globalAlpha = 0.5;
+    // This may not set it to exactly 0.5 if it is rounded/quantised, so
+    // remember for future comparisons.
+    var a = ctx.globalAlpha;
+    @assert ctx.globalAlpha === a;
+    ctx.globalAlpha = 1.1;
+    @assert ctx.globalAlpha === a;
+    ctx.globalAlpha = -0.1;
+    @assert ctx.globalAlpha === a;
+    ctx.globalAlpha = 0;
+    @assert ctx.globalAlpha === 0;
+    ctx.globalAlpha = 1;
+    @assert ctx.globalAlpha === 1;
+
+- name: 2d.composite.globalAlpha.invalid
+  code: |
+    ctx.globalAlpha = 0.5;
+    // This may not set it to exactly 0.5 if it is rounded/quantised, so
+    // remember for future comparisons.
+    var a = ctx.globalAlpha;
+    ctx.globalAlpha = Infinity;
+    @assert ctx.globalAlpha === a;
+    ctx.globalAlpha = -Infinity;
+    @assert ctx.globalAlpha === a;
+    ctx.globalAlpha = NaN;
+    @assert ctx.globalAlpha === a;
+
+- name: 2d.composite.globalAlpha.default
+  code: |
+    @assert ctx.globalAlpha === 1.0;
+
+- name: 2d.composite.globalAlpha.fill
+  code: |
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 100, 50);
+    // Avoiding any potential alpha = 0 optimisations.
+    ctx.globalAlpha = 0.01;
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+    @assert pixel 50,25 ==~ 2,253,0,255;
+  expected: green
+
+- name: 2d.composite.globalAlpha.canvas
+  canvasType: ['HTMLCanvas']
+  code: |
+    var canvas2 = document.createElement('canvas');
+    canvas2.width = 100;
+    canvas2.height = 50;
+    var ctx2 = canvas2.getContext('2d');
+    ctx2.fillStyle = '#f00';
+    ctx2.fillRect(0, 0, 100, 50);
+
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 100, 50);
+    // Avoiding any potential alpha = 0 optimisations.
+    ctx.globalAlpha = 0.01;
+    ctx.drawImage(canvas2, 0, 0);
+    @assert pixel 50,25 ==~ 2,253,0,255;
+  expected: green
+
+- name: 2d.composite.globalAlpha.canvaspattern
+  canvasType: ['HTMLCanvas']
+  code: |
+    var canvas2 = document.createElement('canvas');
+    canvas2.width = 100;
+    canvas2.height = 50;
+    var ctx2 = canvas2.getContext('2d');
+    ctx2.fillStyle = '#f00';
+    ctx2.fillRect(0, 0, 100, 50);
+
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.fillStyle = ctx.createPattern(canvas2, 'no-repeat');
+    // Avoiding any potential alpha = 0 optimisations.
+    ctx.globalAlpha = 0.01;
+    ctx.fillRect(0, 0, 100, 50);
+    @assert pixel 50,25 ==~ 2,253,0,255;
+  expected: green
+
+- name: 2d.composite.globalAlpha.canvascopy
+  canvasType: ['HTMLCanvas']
+  code: |
+    var canvas2 = document.createElement('canvas');
+    canvas2.width = 100;
+    canvas2.height = 50;
+    var ctx2 = canvas2.getContext('2d');
+    ctx2.fillStyle = '#0f0';
+    ctx2.fillRect(0, 0, 100, 50);
+
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+
+    ctx.globalCompositeOperation = 'copy'
+    ctx.globalAlpha = 0.51;
+    ctx.drawImage(canvas2, 0, 0);
+    @assert pixel 50,25 ==~ 0,255,0,130;
+  expected: green
+
+
+- name: 2d.composite.operation.get
+  code: |
+    var modes = ['source-atop', 'source-in', 'source-out', 'source-over',
+        'destination-atop', 'destination-in', 'destination-out', 'destination-over',
+        'lighter', 'copy', 'xor'];
+    for (var i = 0; i < modes.length; ++i)
+    {
+        ctx.globalCompositeOperation = modes[i];
+        @assert ctx.globalCompositeOperation === modes[i];
+    }
+
+- name: 2d.composite.operation.unrecognised
+  code: |
+    ctx.globalCompositeOperation = 'xor';
+    ctx.globalCompositeOperation = 'nonexistent';
+    @assert ctx.globalCompositeOperation === 'xor';
+
+- name: 2d.composite.operation.darker
+  code: |
+    ctx.globalCompositeOperation = 'xor';
+    ctx.globalCompositeOperation = 'darker';
+    @assert ctx.globalCompositeOperation === 'xor';
+
+- name: 2d.composite.operation.over
+  code: |
+    ctx.globalCompositeOperation = 'xor';
+    ctx.globalCompositeOperation = 'over';
+    @assert ctx.globalCompositeOperation === 'xor';
+
+- name: 2d.composite.operation.clear
+  code: |
+    ctx.globalCompositeOperation = 'xor';
+    ctx.globalCompositeOperation = 'clear';
+    @assert ctx.globalCompositeOperation === 'clear';
+
+- name: 2d.composite.operation.highlight
+  code: |
+    ctx.globalCompositeOperation = 'xor';
+    ctx.globalCompositeOperation = 'highlight';
+    @assert ctx.globalCompositeOperation === 'xor';
+
+- name: 2d.composite.operation.nullsuffix
+  code: |
+    ctx.globalCompositeOperation = 'xor';
+    ctx.globalCompositeOperation = 'source-over\0';
+    @assert ctx.globalCompositeOperation === 'xor';
+
+- name: 2d.composite.operation.casesensitive
+  code: |
+    ctx.globalCompositeOperation = 'xor';
+    ctx.globalCompositeOperation = 'Source-over';
+    @assert ctx.globalCompositeOperation === 'xor';
+
+- name: 2d.composite.operation.default
+  code: |
+    @assert ctx.globalCompositeOperation === 'source-over';
+
+
+- name: 2d.composite.globalAlpha.image
+  test_type: promise
+  code: |
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 100, 50);
+    // Avoiding any potential alpha = 0 optimisations.
+    ctx.globalAlpha = 0.01;
+    const response = await fetch('/images/red.png');
+    const blob = await response.blob();
+    const bitmap = await createImageBitmap(blob);
+
+    ctx.drawImage(bitmap, 0, 0);
+    @assert pixel 50,25 ==~ 2,253,0,255;
+  expected: green
+
+- name: 2d.composite.globalAlpha.canvas
+  canvasType: ['OffscreenCanvas']
+  code: |
+    var offscreenCanvas2 = new OffscreenCanvas(100, 50);
+    var ctx2 = offscreenCanvas2.getContext('2d');
+    ctx2.fillStyle = '#f00';
+    ctx2.fillRect(0, 0, 100, 50);
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 100, 50);
+    // Avoiding any potential alpha = 0 optimisations.
+    ctx.globalAlpha = 0.01;
+    ctx.drawImage(offscreenCanvas2, 0, 0);
+    @assert pixel 50,25 ==~ 2,253,0,255;
+
+- name: 2d.composite.globalAlpha.imagepattern
+  test_type: promise
+  code: |
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 100, 50);
+    const response = await fetch('/images/red.png');
+    const blob = await response.blob();
+    const bitmap = await createImageBitmap(blob);
+
+    ctx.fillStyle = ctx.createPattern(bitmap, 'no-repeat');
+    // Avoiding any potential alpha = 0 optimisations.
+    ctx.globalAlpha = 0.01;
+    ctx.fillRect(0, 0, 100, 50);
+    @assert pixel 50,25 ==~ 2,253,0,255;
+  expected: green
+
+- name: 2d.composite.globalAlpha.canvaspattern
+  canvasType: ['OffscreenCanvas']
+  code: |
+    var offscreenCanvas2 = new OffscreenCanvas(100, 50);
+    var ctx2 = offscreenCanvas2.getContext('2d');
+    ctx2.fillStyle = '#f00';
+    ctx2.fillRect(0, 0, 100, 50);
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.fillStyle = ctx.createPattern(offscreenCanvas2, 'no-repeat');
+    // Avoiding any potential alpha = 0 optimisations.
+    ctx.globalAlpha = 0.01;
+    ctx.fillRect(0, 0, 100, 50);
+    @assert pixel 50,25 ==~ 2,253,0,255;
+
+- name: 2d.composite.globalAlpha.canvascopy
+  canvasType: ['OffscreenCanvas']
+  code: |
+    var offscreenCanvas2 = new OffscreenCanvas(100, 50);
+    var ctx2 = offscreenCanvas2.getContext('2d');
+    ctx2.fillStyle = '#0f0';
+    ctx2.fillRect(0, 0, 100, 50);
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.globalCompositeOperation = 'copy'
+    ctx.globalAlpha = 0.51;
+    ctx.drawImage(offscreenCanvas2, 0, 0);
+    @assert pixel 50,25 ==~ 0,255,0,130;
diff --git a/testing/web-platform/tests/html/canvas/tools/yaml-new/conformance_requirements.yaml b/testing/web-platform/tests/html/canvas/tools/yaml-new/conformance_requirements.yaml
new file mode 100644
index 0000000000..3483d115f4
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/tools/yaml-new/conformance_requirements.yaml
@@ -0,0 +1,178 @@
+- name: 2d.conformance.requirements.delete
+  desc: window.CanvasRenderingContext2D is Configurable
+  notes: &bindings Defined in "Web IDL" (draft)
+  canvasType: ['HTMLCanvas']
+  code: |
+    @assert window.CanvasRenderingContext2D !== undefined;
+    @assert delete window.CanvasRenderingContext2D === true;
+    @assert window.CanvasRenderingContext2D === undefined;
+
+- name: 2d.conformance.requirements.basics
+  desc: void methods return undefined
+  notes: *bindings
+  code: |
+    @assert ctx.save() === undefined;
+    @assert ctx.restore() === undefined;
+    @assert ctx.scale(1, 1) === undefined;
+    @assert ctx.rotate(0) === undefined;
+    @assert ctx.translate(0, 0) === undefined;
+    if (ctx.transform) { // (avoid spurious failures, since the aim here is not to test that all features are supported)
+        @assert ctx.transform(1, 0, 0, 1, 0, 0) === undefined;
+    }
+    if (ctx.setTransform) {
+        @assert ctx.setTransform(1, 0, 0, 1, 0, 0) === undefined;
+        @assert ctx.setTransform() === undefined;
+    }
+    @assert ctx.clearRect(0, 0, 0, 0) === undefined;
+    @assert ctx.fillRect(0, 0, 0, 0) === undefined;
+    @assert ctx.strokeRect(0, 0, 0, 0) === undefined;
+    @assert ctx.beginPath() === undefined;
+    @assert ctx.closePath() === undefined;
+    @assert ctx.moveTo(0, 0) === undefined;
+    @assert ctx.lineTo(0, 0) === undefined;
+    @assert ctx.quadraticCurveTo(0, 0, 0, 0) === undefined;
+    @assert ctx.bezierCurveTo(0, 0, 0, 0, 0, 0) === undefined;
+    @assert ctx.arcTo(0, 0, 0, 0, 1) === undefined;
+    @assert ctx.rect(0, 0, 0, 0) === undefined;
+    @assert ctx.arc(0, 0, 1, 0, 0, true) === undefined;
+    @assert ctx.fill() === undefined;
+    @assert ctx.stroke() === undefined;
+    @assert ctx.clip() === undefined;
+    if (ctx.fillText) {
+        @assert ctx.fillText('test', 0, 0) === undefined;
+        @assert ctx.strokeText('test', 0, 0) === undefined;
+    }
+    if (ctx.putImageData) {
+        @assert ctx.putImageData(ctx.getImageData(0, 0, 1, 1), 0, 0) === undefined;
+    }
+    @assert ctx.drawImage(canvas, 0, 0, 1, 1, 0, 0, 0, 0) === undefined;
+    @assert ctx.createLinearGradient(0, 0, 0, 0).addColorStop(0, 'white') === undefined;
+
+- name: 2d.conformance.requirements.missingargs
+  desc: Missing arguments cause TypeError
+  code: |
+    @assert throws TypeError ctx.scale();
+    @assert throws TypeError ctx.scale(1);
+    @assert throws TypeError ctx.rotate();
+    @assert throws TypeError ctx.translate();
+    @assert throws TypeError ctx.translate(0);
+    if (ctx.transform) { // (avoid spurious failures, since the aim here is not to test that all features are supported)
+        @assert throws TypeError ctx.transform();
+        @assert throws TypeError ctx.transform(1);
+        @assert throws TypeError ctx.transform(1, 0);
+        @assert throws TypeError ctx.transform(1, 0, 0);
+        @assert throws TypeError ctx.transform(1, 0, 0, 1);
+        @assert throws TypeError ctx.transform(1, 0, 0, 1, 0);
+    }
+    if (ctx.setTransform) {
+        @assert throws TypeError ctx.setTransform(1);
+        @assert throws TypeError ctx.setTransform(1, 0);
+        @assert throws TypeError ctx.setTransform(1, 0, 0);
+        @assert throws TypeError ctx.setTransform(1, 0, 0, 1);
+        @assert throws TypeError ctx.setTransform(1, 0, 0, 1, 0);
+    }
+    @assert throws TypeError ctx.createLinearGradient();
+    @assert throws TypeError ctx.createLinearGradient(0);
+    @assert throws TypeError ctx.createLinearGradient(0, 0);
+    @assert throws TypeError ctx.createLinearGradient(0, 0, 1);
+    @assert throws TypeError ctx.createRadialGradient();
+    @assert throws TypeError ctx.createRadialGradient(0);
+    @assert throws TypeError ctx.createRadialGradient(0, 0);
+    @assert throws TypeError ctx.createRadialGradient(0, 0, 1);
+    @assert throws TypeError ctx.createRadialGradient(0, 0, 1, 0);
+    @assert throws TypeError ctx.createRadialGradient(0, 0, 1, 0, 0);
+    @assert throws TypeError ctx.createPattern(canvas);
+    @assert throws TypeError ctx.clearRect();
+    @assert throws TypeError ctx.clearRect(0);
+    @assert throws TypeError ctx.clearRect(0, 0);
+    @assert throws TypeError ctx.clearRect(0, 0, 0);
+    @assert throws TypeError ctx.fillRect();
+    @assert throws TypeError ctx.fillRect(0);
+    @assert throws TypeError ctx.fillRect(0, 0);
+    @assert throws TypeError ctx.fillRect(0, 0, 0);
+    @assert throws TypeError ctx.strokeRect();
+    @assert throws TypeError ctx.strokeRect(0);
+    @assert throws TypeError ctx.strokeRect(0, 0);
+    @assert throws TypeError ctx.strokeRect(0, 0, 0);
+    @assert throws TypeError ctx.moveTo();
+    @assert throws TypeError ctx.moveTo(0);
+    @assert throws TypeError ctx.lineTo();
+    @assert throws TypeError ctx.lineTo(0);
+    @assert throws TypeError ctx.quadraticCurveTo();
+    @assert throws TypeError ctx.quadraticCurveTo(0);
+    @assert throws TypeError ctx.quadraticCurveTo(0, 0);
+    @assert throws TypeError ctx.quadraticCurveTo(0, 0, 0);
+    @assert throws TypeError ctx.bezierCurveTo();
+    @assert throws TypeError ctx.bezierCurveTo(0);
+    @assert throws TypeError ctx.bezierCurveTo(0, 0);
+    @assert throws TypeError ctx.bezierCurveTo(0, 0, 0);
+    @assert throws TypeError ctx.bezierCurveTo(0, 0, 0, 0);
+    @assert throws TypeError ctx.bezierCurveTo(0, 0, 0, 0, 0);
+    @assert throws TypeError ctx.arcTo();
+    @assert throws TypeError ctx.arcTo(0);
+    @assert throws TypeError ctx.arcTo(0, 0);
+    @assert throws TypeError ctx.arcTo(0, 0, 0);
+    @assert throws TypeError ctx.arcTo(0, 0, 0, 0);
+    @assert throws TypeError ctx.rect();
+    @assert throws TypeError ctx.rect(0);
+    @assert throws TypeError ctx.rect(0, 0);
+    @assert throws TypeError ctx.rect(0, 0, 0);
+    @assert throws TypeError ctx.arc();
+    @assert throws TypeError ctx.arc(0);
+    @assert throws TypeError ctx.arc(0, 0);
+    @assert throws TypeError ctx.arc(0, 0, 1);
+    @assert throws TypeError ctx.arc(0, 0, 1, 0);
+    // (6th argument to arc is optional)
+    if (ctx.isPointInPath) {
+        @assert throws TypeError ctx.isPointInPath();
+        @assert throws TypeError ctx.isPointInPath(0);
+    }
+    if (ctx.drawFocusRing) {
+        @assert throws TypeError ctx.drawFocusRing();
+        @assert throws TypeError ctx.drawFocusRing(canvas);
+        @assert throws TypeError ctx.drawFocusRing(canvas, 0);
+    }
+    if (ctx.fillText) {
+        @assert throws TypeError ctx.fillText();
+        @assert throws TypeError ctx.fillText('test');
+        @assert throws TypeError ctx.fillText('test', 0);
+        @assert throws TypeError ctx.strokeText();
+        @assert throws TypeError ctx.strokeText('test');
+        @assert throws TypeError ctx.strokeText('test', 0);
+        @assert throws TypeError ctx.measureText();
+    }
+    @assert throws TypeError ctx.drawImage();
+    @assert throws TypeError ctx.drawImage(canvas);
+    @assert throws TypeError ctx.drawImage(canvas, 0);
+    // TODO: n >= 3 args on drawImage could be either a valid overload,
+    // or too few for another overload, or too many for another
+    // overload - what should happen?
+    if (ctx.createImageData) {
+        @assert throws TypeError ctx.createImageData();
+        @assert throws TypeError ctx.createImageData(1);
+    }
+    if (ctx.getImageData) {
+        @assert throws TypeError ctx.getImageData();
+        @assert throws TypeError ctx.getImageData(0);
+        @assert throws TypeError ctx.getImageData(0, 0);
+        @assert throws TypeError ctx.getImageData(0, 0, 1);
+    }
+    if (ctx.putImageData) {
+        var imgdata = ctx.getImageData(0, 0, 1, 1);
+        @assert throws TypeError ctx.putImageData();
+        @assert throws TypeError ctx.putImageData(imgdata);
+        @assert throws TypeError ctx.putImageData(imgdata, 0);
+    }
+    var g = ctx.createLinearGradient(0, 0, 0, 0);
+    @assert throws TypeError g.addColorStop(); @moz-todo
+    @assert throws TypeError g.addColorStop(0); @moz-todo
+
+
+- name: 2d.conformance.requirements.drawings
+  desc: void methods return undefined
+  images:
+  - yellow.png
+  canvasType: ['HTMLCanvas']
+  code: |
+    @assert ctx.drawImage(document.getElementById('yellow.png'), 0, 0, 1, 1, 0, 0, 0, 0) === undefined;
+
diff --git a/testing/web-platform/tests/html/canvas/tools/yaml-new/drawing-images-to-the-canvas.yaml b/testing/web-platform/tests/html/canvas/tools/yaml-new/drawing-images-to-the-canvas.yaml
new file mode 100644
index 0000000000..e1837342e6
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/tools/yaml-new/drawing-images-to-the-canvas.yaml
@@ -0,0 +1,711 @@
+- name: 2d.drawImage.canvas
+  canvasType: ['HTMLCanvas']
+  code: |
+    var canvas2 = document.createElement('canvas');
+    canvas2.width = 100;
+    canvas2.height = 50;
+    var ctx2 = canvas2.getContext('2d');
+    ctx2.fillStyle = '#0f0';
+    ctx2.fillRect(0, 0, 100, 50);
+
+    ctx.fillStyle = '#f00';
+    ctx.drawImage(canvas2, 0, 0);
+
+    @assert pixel 0,0 ==~ 0,255,0,255;
+    @assert pixel 99,0 ==~ 0,255,0,255;
+    @assert pixel 0,49 ==~ 0,255,0,255;
+    @assert pixel 99,49 ==~ 0,255,0,255;
+
+    ctx.drawImage(document.createElement('canvas'), 0, 0);
+
+    @assert pixel 0,0 ==~ 0,255,0,255;
+    @assert pixel 99,0 ==~ 0,255,0,255;
+    @assert pixel 0,49 ==~ 0,255,0,255;
+    @assert pixel 99,49 ==~ 0,255,0,255;
+  expected: green
+
+- name: 2d.drawImage.self.1
+  code: |
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 50, 50);
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(50, 0, 50, 50);
+    ctx.drawImage(canvas, 50, 0);
+
+    @assert pixel 0,0 ==~ 0,255,0,255;
+    @assert pixel 99,0 ==~ 0,255,0,255;
+    @assert pixel 0,49 ==~ 0,255,0,255;
+    @assert pixel 99,49 ==~ 0,255,0,255;
+  expected: green
+
+- name: 2d.drawImage.self.2
+  code: |
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 1, 100, 49);
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 1);
+    ctx.drawImage(canvas, 0, 1);
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 100, 2);
+
+    @assert pixel 0,0 ==~ 0,255,0,255;
+    @assert pixel 99,0 ==~ 0,255,0,255;
+    @assert pixel 0,49 ==~ 0,255,0,255;
+    @assert pixel 99,49 ==~ 0,255,0,255;
+  expected: green
+
+- name: 2d.drawImage.null
+  code: |
+    @assert throws TypeError ctx.drawImage(null, 0, 0);
+
+- name: 2d.drawImage.wrongtype
+  desc: Incorrect image types in drawImage do not match any defined overloads, so
+    WebIDL throws a TypeError
+  code: |
+    @assert throws TypeError ctx.drawImage(undefined, 0, 0);
+    @assert throws TypeError ctx.drawImage(0, 0, 0);
+    @assert throws TypeError ctx.drawImage("", 0, 0);
+
+- name: 2d.drawImage.wrongtype.paragraph
+  desc: Incorrect image types in drawImage do not match any defined overloads, so
+    WebIDL throws a TypeError
+  notes: &bindings Defined in "Web IDL" (draft)
+  canvasType: ['HTMLCanvas']
+  code: |
+    @assert throws TypeError ctx.drawImage(document.createElement('p'), 0, 0);
+
+- name: 2d.drawImage.incomplete.nosrc
+  canvasType: ['HTMLCanvas']
+  mozilla: {throws: !!null ''}
+  code: |
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 100, 50);
+    var img = new Image();
+    ctx.drawImage(img, 0, 0);
+    @assert pixel 50,25 ==~ 0,255,0,255;
+  expected: green
+
+- name: 2d.drawImage.incomplete.immediate
+  canvasType: ['HTMLCanvas']
+  images:
+  - red.png
+  code: |
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 100, 50);
+    var img = new Image();
+    img.src = '../images/red.png';
+    // This triggers the "update the image data" algorithm.
+    // The image will not go to the "completely available" state
+    // until a fetch task in the networking task source is processed,
+    // so the image must not be fully decodable yet:
+    ctx.drawImage(img, 0, 0);
+    @assert pixel 50,25 ==~ 0,255,0,255; @moz-todo
+  expected: green
+
+- name: 2d.drawImage.incomplete.reload
+  canvasType: ['HTMLCanvas']
+  images:
+  - yellow.png
+  - red.png
+  code: |
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 100, 50);
+    var img = document.getElementById('yellow.png');
+    img.src = '../images/red.png';
+    // This triggers the "update the image data" algorithm,
+    // and resets the image to the "unavailable" state.
+    // The image will not go to the "completely available" state
+    // until a fetch task in the networking task source is processed,
+    // so the image must not be fully decodable yet:
+    ctx.drawImage(img, 0, 0);
+    @assert pixel 50,25 ==~ 0,255,0,255; @moz-todo
+  expected: green
+
+- name: 2d.drawImage.incomplete.emptysrc
+  canvasType: ['HTMLCanvas']
+  images:
+  - red.png
+  mozilla: {throws: !!null ''}
+  code: |
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 100, 50);
+    var img = document.getElementById('red.png');
+    img.src = "";
+    ctx.drawImage(img, 0, 0);
+    @assert pixel 50,25 ==~ 0,255,0,255;
+  expected: green
+
+- name: 2d.drawImage.incomplete.removedsrc
+  canvasType: ['HTMLCanvas']
+  images:
+  - red.png
+  mozilla: {throws: !!null ''}
+  code: |
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 100, 50);
+    var img = document.getElementById('red.png');
+    img.removeAttribute('src');
+    ctx.drawImage(img, 0, 0);
+    @assert pixel 50,25 ==~ 0,255,0,255;
+  expected: green
+
+- name: 2d.drawImage.nonexistent
+  canvasType: ['HTMLCanvas']
+  images:
+  - not-found-at-all.png
+  code: |
+    var img = document.getElementById('not-found-at-all.png');
+    @assert throws INVALID_STATE_ERR ctx.drawImage(img, 0, 0);
+
+- name: 2d.drawImage.zerocanvas
+  desc: drawImage with zero-sized canvas as the source shoud throw exception
+  canvasType: ['HTMLCanvas']
+  code: |
+    var canvas2 = document.createElement('canvas');
+    canvas2.width = 0;
+    canvas2.height = 50;
+    @assert throws INVALID_STATE_ERR ctx.drawImage(canvas2, 0, 0);
+
+    canvas2.width = 50;
+    canvas2.height = 0;
+    @assert throws INVALID_STATE_ERR ctx.drawImage(canvas2, 0, 0);
+
+    canvas2.width = 0;
+    canvas2.height = 0;
+    @assert throws INVALID_STATE_ERR ctx.drawImage(canvas2, 0, 0);
+
+- name: 2d.drawImage.animated.gif
+  desc: drawImage() of an animated GIF draws the first frame
+  canvasType: ['HTMLCanvas']
+  images:
+  - anim-gr.gif
+  code: |
+    deferTest();
+    step_timeout(t.step_func_done(function () {
+        ctx.drawImage(document.getElementById('anim-gr.gif'), 0, 0);
+        @assert pixel 50,25 ==~ 0,255,0,255;
+    }), 500);
+  expected: green
+
+- name: 2d.drawImage.animated.apng
+  desc: drawImage() of an APNG with no poster frame draws the first frame
+  canvasType: ['HTMLCanvas']
+  images:
+  - anim-gr.png
+  code: |
+    deferTest();
+    step_timeout(t.step_func_done(function () {
+        ctx.drawImage(document.getElementById('anim-gr.png'), 0, 0);
+        @assert pixel 50,25 ==~ 0,255,0,255;
+    }), 500);
+  expected: green
+
+# TODO: drawImage shadows
+
+- name: 2d.drawImage.3arg
+  test_type: promise
+  code: |
+    const response_red = await fetch('/images/red.png');
+    const blob_red = await response_red.blob();
+    const bitmap_red = await createImageBitmap(blob_red);
+
+    const response_green = await fetch('/images/green.png');
+    const blob_green = await response_green.blob();
+    const bitmap_green = await createImageBitmap(blob_green);
+
+    ctx.drawImage(bitmap_green, 0, 0);
+    ctx.drawImage(bitmap_red, -100, 0);
+    ctx.drawImage(bitmap_red, 100, 0);
+    ctx.drawImage(bitmap_red, 0, -50);
+    ctx.drawImage(bitmap_red, 0, 50);
+    @assert pixel 0,0 ==~ 0,255,0,255;
+    @assert pixel 99,0 ==~ 0,255,0,255;
+    @assert pixel 0,49 ==~ 0,255,0,255;
+    @assert pixel 99,49 ==~ 0,255,0,255;
+
+- name: 2d.drawImage.5arg
+  test_type: promise
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+    const response_red = await fetch('/images/red.png');
+    const blob_red = await response_red.blob();
+    const bitmap_red = await createImageBitmap(blob_red);
+
+    const response_green = await fetch('/images/green.png');
+    const blob_green = await response_green.blob();
+    const bitmap_green = await createImageBitmap(blob_green);
+
+    ctx.drawImage(bitmap_green, 50, 0, 50, 50);
+    ctx.drawImage(bitmap_red, 0, 0, 50, 50);
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 50, 50);
+    @assert pixel 0,0 ==~ 0,255,0,255;
+    @assert pixel 99,0 ==~ 0,255,0,255;
+    @assert pixel 0,49 ==~ 0,255,0,255;
+    @assert pixel 99,49 ==~ 0,255,0,255;
+
+- name: 2d.drawImage.9arg.basic
+  test_type: promise
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+    const response = await fetch('/images/green.png');
+    const blob = await response.blob();
+    const bitmap = await createImageBitmap(blob);
+
+    ctx.drawImage(bitmap, 0, 0, 100, 50, 0, 0, 100, 50);
+    @assert pixel 0,0 ==~ 0,255,0,255;
+    @assert pixel 99,0 ==~ 0,255,0,255;
+    @assert pixel 0,49 ==~ 0,255,0,255;
+    @assert pixel 99,49 ==~ 0,255,0,255;
+  expected: green
+
+- name: 2d.drawImage.9arg.sourcepos
+  test_type: promise
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+    const response = await fetch('/images/rgrg-256x256.png');
+    const blob = await response.blob();
+    const bitmap = await createImageBitmap(blob);
+    ctx.drawImage(bitmap, 140, 20, 100, 50, 0, 0, 100, 50);
+    @assert pixel 0,0 ==~ 0,255,0,255;
+    @assert pixel 99,0 ==~ 0,255,0,255;
+    @assert pixel 0,49 ==~ 0,255,0,255;
+    @assert pixel 99,49 ==~ 0,255,0,255;
+  expected: green
+
+- name: 2d.drawImage.9arg.sourcesize
+  test_type: promise
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+    const response = await fetch('/images/rgrg-256x256.png');
+    const blob = await response.blob();
+    const bitmap = await createImageBitmap(blob);
+    ctx.drawImage(bitmap, 0, 0, 256, 256, 0, 0, 100, 50);
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 51, 26);
+    ctx.fillRect(49, 24, 51, 26);
+    @assert pixel 0,0 ==~ 0,255,0,255;
+    @assert pixel 99,0 ==~ 0,255,0,255;
+    @assert pixel 0,49 ==~ 0,255,0,255;
+    @assert pixel 99,49 ==~ 0,255,0,255;
+    @assert pixel 20,20 ==~ 0,255,0,255;
+    @assert pixel 80,20 ==~ 0,255,0,255;
+    @assert pixel 20,30 ==~ 0,255,0,255;
+    @assert pixel 80,30 ==~ 0,255,0,255;
+  expected: green
+
+- name: 2d.drawImage.9arg.destpos
+  test_type: promise
+  code: |
+    const response_red = await fetch('/images/red.png');
+    const blob_red = await response_red.blob();
+    const bitmap_red = await createImageBitmap(blob_red);
+
+    const response_green = await fetch('/images/green.png');
+    const blob_green = await response_green.blob();
+    const bitmap_green = await createImageBitmap(blob_green);
+
+    ctx.drawImage(bitmap_green, 0, 0, 100, 50, 0, 0, 100, 50);
+    ctx.drawImage(bitmap_green, 0, 0, 100, 50, -100, 0, 100, 50);
+    ctx.drawImage(bitmap_red, 0, 0, 100, 50, 100, 0, 100, 50);
+    ctx.drawImage(bitmap_red, 0, 0, 100, 50, 0, -50, 100, 50);
+    ctx.drawImage(bitmap_red, 0, 0, 100, 50, 0, 50, 100, 50);
+    @assert pixel 0,0 ==~ 0,255,0,255;
+    @assert pixel 99,0 ==~ 0,255,0,255;
+    @assert pixel 0,49 ==~ 0,255,0,255;
+    @assert pixel 99,49 ==~ 0,255,0,255;
+
+- name: 2d.drawImage.9arg.destsize
+  test_type: promise
+  code: |
+    const response_red = await fetch('/images/red.png');
+    const blob_red = await response_red.blob();
+    const bitmap_red = await createImageBitmap(blob_red);
+
+    const response_green = await fetch('/images/green.png');
+    const blob_green = await response_green.blob();
+    const bitmap_green = await createImageBitmap(blob_green);
+
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.drawImage(bitmap_green, 1, 1, 1, 1, 0, 0, 100, 50);
+    ctx.drawImage(bitmap_red, 0, 0, 100, 50, -50, 0, 50, 50);
+    ctx.drawImage(bitmap_red, 0, 0, 100, 50, 100, 0, 50, 50);
+    ctx.drawImage(bitmap_red, 0, 0, 100, 50, 0, -25, 100, 25);
+    ctx.drawImage(bitmap_red, 0, 0, 100, 50, 0, 50, 100, 25);
+    @assert pixel 0,0 ==~ 0,255,0,255;
+    @assert pixel 99,0 ==~ 0,255,0,255;
+    @assert pixel 0,49 ==~ 0,255,0,255;
+    @assert pixel 99,49 ==~ 0,255,0,255;
+
+- name: 2d.drawImage.canvas
+  canvasType: ['OffscreenCanvas']
+  code: |
+    var offscreenCanvas2 = new OffscreenCanvas(100, 50);
+    var ctx2 = offscreenCanvas2.getContext('2d');
+    ctx2.fillStyle = '#0f0';
+    ctx2.fillRect(0, 0, 100, 50);
+    ctx.fillStyle = '#f00';
+    ctx.drawImage(offscreenCanvas2, 0, 0);
+    @assert pixel 0,0 ==~ 0,255,0,255;
+    @assert pixel 99,0 ==~ 0,255,0,255;
+    @assert pixel 0,49 ==~ 0,255,0,255;
+    @assert pixel 99,49 ==~ 0,255,0,255;
+
+- name: 2d.drawImage.zerocanvas
+  canvasType: ['OffscreenCanvas']
+  code: |
+    var offscreenCanvas2 = new OffscreenCanvas(0, 10);
+    @assert throws INVALID_STATE_ERR ctx.drawImage(offscreenCanvas2, 0, 0);
+
+    offscreenCanvas2.width = 10;
+    offscreenCanvas2.height = 0;
+    @assert throws INVALID_STATE_ERR ctx.drawImage(offscreenCanvas2, 0, 0);
+
+    offscreenCanvas2.width = 0;
+    offscreenCanvas2.height = 0;
+    @assert throws INVALID_STATE_ERR ctx.drawImage(offscreenCanvas2, 0, 0);
+
+- name: 2d.drawImage.floatsource
+  test_type: promise
+  code: |
+    const response = await fetch('/images/green.png');
+    const blob = await response.blob();
+    const bitmap = await createImageBitmap(blob);
+    ctx.drawImage(bitmap, 10.1, 10.1, 0.1, 0.1, 0, 0, 100, 50);
+    @assert pixel 50,25 ==~ 0,255,0,255;
+  Expected: green
+
+- name: 2d.drawImage.zerosource
+  desc: drawImage with zero-sized source rectangle draws nothing without exception
+  test_type: promise
+  code: |
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 100, 50);
+    const response = await fetch('/images/red.png');
+    const blob = await response.blob();
+    const bitmap = await createImageBitmap(blob);
+    ctx.drawImage(bitmap, 10, 10, 0, 1, 0, 0, 100, 50);
+    ctx.drawImage(bitmap, 10, 10, 1, 0, 0, 0, 100, 50);
+    ctx.drawImage(bitmap, 10, 10, 0, 0, 0, 0, 100, 50);
+    @assert pixel 50,25 ==~ 0,255,0,255;
+  expected: green
+
+- name: 2d.drawImage.zerosource.image
+  desc: drawImage with zero-sized source rectangle from image draws nothing without exception
+  test_type: promise
+  canvasType: ['HTMLCanvas']
+  code: |
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 100, 50);
+
+    function loadImage(src) {
+      return new Promise((resolve, reject) => {
+        const img = new Image();
+        img.onload = () => resolve(img);
+        img.onerror = (err) => reject(err);
+        img.src = src;
+      });
+    }
+    const img1 = await loadImage('/images/red-zerowidth.svg');
+    const img2 = await loadImage('/images/red-zeroheight.svg');
+    const img3 = await loadImage('/images/red-zerosize.svg');
+
+    ctx.drawImage(img1, 0, 0, 100, 50);
+    ctx.drawImage(img2, 0, 0, 100, 50);
+    ctx.drawImage(img3, 0, 0, 100, 50);
+    _assertPixel(canvas, 50, 25, 0, 255, 0, 255);
+  expected: green
+
+- name: 2d.drawImage.zerosource.image
+  desc: drawImage with zero-sized source rectangle from image draws nothing without exception
+  test_type: promise
+  canvasType: ['OffscreenCanvas']
+  code: |
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 100, 50);
+    var promise = new Promise(function(resolve, reject) {
+      var xhr = new XMLHttpRequest();
+      xhr.open("GET", '/images/red-zerowidth.svg');
+      xhr.responseType = 'blob';
+      xhr.send();
+      xhr.onload = function() {
+        resolve(xhr.response);
+      };
+    });
+    promise.then(function(response) {
+      createImageBitmap(response).then(bitmap => {
+        ctx.drawImage(bitmap, 0, 0, 100, 50);
+        _assertPixel(canvas, 50,25, 0,255,0,255);
+      });
+    });
+  expected: green
+
+- name: 2d.drawImage.negativesource
+  desc: Negative source width/height represents the correct rectangle
+  mozilla: {throws: !!null ''}
+  test_type: promise
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+    const response = await fetch('/images/ggrr-256x256.png');
+    const blob = await response.blob();
+    const bitmap = await createImageBitmap(blob);
+    ctx.drawImage(bitmap, 100, 78, -100, 50, 0, 0, 50, 50);
+    ctx.drawImage(bitmap, 100, 128, -100, -50, 50, 0, 50, 50);
+    @assert pixel 1,1 ==~ 0,255,0,255;
+    @assert pixel 1,48 ==~ 0,255,0,255;
+    @assert pixel 98,1 ==~ 0,255,0,255;
+    @assert pixel 98,48 ==~ 0,255,0,255;
+    @assert pixel 48,1 ==~ 0,255,0,255;
+    @assert pixel 48,48 ==~ 0,255,0,255;
+    @assert pixel 51,1 ==~ 0,255,0,255;
+    @assert pixel 51,48 ==~ 0,255,0,255;
+    @assert pixel 25,25 ==~ 0,255,0,255;
+    @assert pixel 75,25 ==~ 0,255,0,255;
+  expected: green
+
+- name: 2d.drawImage.negativedest
+  desc: Negative destination width/height represents the correct rectangle
+  mozilla: {throws: !!null ''}
+  test_type: promise
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+    const response = await fetch('/images/ggrr-256x256.png');
+    const blob = await response.blob();
+    const bitmap = await createImageBitmap(blob);
+    ctx.drawImage(bitmap, 100, 78, 50, 50, 0, 50, 50, -50);
+    ctx.drawImage(bitmap, 100, 128, 50, -50, 100, 50, -50, -50);
+    @assert pixel 1,1 ==~ 0,255,0,255;
+    @assert pixel 1,48 ==~ 0,255,0,255;
+    @assert pixel 98,1 ==~ 0,255,0,255;
+    @assert pixel 98,48 ==~ 0,255,0,255;
+    @assert pixel 48,1 ==~ 0,255,0,255;
+    @assert pixel 48,48 ==~ 0,255,0,255;
+    @assert pixel 51,1 ==~ 0,255,0,255;
+    @assert pixel 51,48 ==~ 0,255,0,255;
+    @assert pixel 25,25 ==~ 0,255,0,255;
+    @assert pixel 75,25 ==~ 0,255,0,255;
+  expected: green
+
+- name: 2d.drawImage.negativedir
+  desc: Negative dimensions do not affect the direction of the image
+  mozilla: {throws: !!null ''}
+  test_type: promise
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+    const response = await fetch('/images/ggrr-256x256.png');
+    const blob = await response.blob();
+    const bitmap = await createImageBitmap(blob);
+    ctx.drawImage(bitmap, 0, 178, 50, -100, 0, 0, 50, 100);
+    ctx.drawImage(bitmap, 0, 78, 50, 100, 50, 100, 50, -100);
+    @assert pixel 1,1 ==~ 0,255,0,255;
+    @assert pixel 1,48 ==~ 0,255,0,255;
+    @assert pixel 98,1 ==~ 0,255,0,255;
+    @assert pixel 98,48 ==~ 0,255,0,255;
+    @assert pixel 48,1 ==~ 0,255,0,255;
+    @assert pixel 48,48 ==~ 0,255,0,255;
+    @assert pixel 51,1 ==~ 0,255,0,255;
+    @assert pixel 51,48 ==~ 0,255,0,255;
+    @assert pixel 25,25 ==~ 0,255,0,255;
+    @assert pixel 75,25 ==~ 0,255,0,255;
+  expected: green
+
+- name: 2d.drawImage.outsidesource
+  DISABLED: fix this to match the current spec (transparent black outside source)
+  canvasType: ['OffscreenCanvas']
+  code: |
+    const response_red = await fetch('/images/red.png');
+    const blob_red = await response_red.blob();
+    const bitmap_red = await createImageBitmap(blob_red);
+
+    const response_green = await fetch('/images/green.png');
+    const blob_green = await response_green.blob();
+    const bitmap_green = await createImageBitmap(blob_green);
+    ctx.drawImage(bitmap_green, 10.5, 10.5, 89.5, 39.5, 0, 0, 100, 50);
+    ctx.drawImage(bitmap_green, 5.5, 5.5, -5.5, -5.5, 0, 0, 100, 50);
+    ctx.drawImage(bitmap_green, 100, 50, -5, -5, 0, 0, 100, 50);
+    @assert throws INDEX_SIZE_ERR ctx.drawImage(bitmap1, -0.001, 0, 100, 50, 0, 0, 100, 50);
+    @assert throws INDEX_SIZE_ERR ctx.drawImage(bitmap1, 0, -0.001, 100, 50, 0, 0, 100, 50);
+    @assert throws INDEX_SIZE_ERR ctx.drawImage(bitmap1, 0, 0, 100.001, 50, 0, 0, 100, 50);
+    @assert throws INDEX_SIZE_ERR ctx.drawImage(bitmap1, 0, 0, 100, 50.001, 0, 0, 100, 50);
+    @assert throws INDEX_SIZE_ERR ctx.drawImage(bitmap1, 50, 0, 50.001, 50, 0, 0, 100, 50); @moz-todo
+    @assert throws INDEX_SIZE_ERR ctx.drawImage(bitmap1, 0, 0, -5, 5, 0, 0, 100, 50);
+    @assert throws INDEX_SIZE_ERR ctx.drawImage(bitmap1, 0, 0, 5, -5, 0, 0, 100, 50);
+    @assert throws INDEX_SIZE_ERR ctx.drawImage(bitmap1, 110, 60, -20, -20, 0, 0, 100, 50);
+    @assert pixel 50,25 ==~ 0,255,0,255; @moz-todo
+  expected: green
+
+- name: 2d.drawImage.broken
+  test_type: promise
+  code: |
+    const response = await fetch('/images/broken.png');
+    const blob = await response.blob();
+
+    await promise_rejects_dom(t, 'InvalidStateError', createImageBitmap(blob), 'The source image could not be decoded.');
+  expected: green
+
+- name: 2d.drawImage.svg
+  desc: drawImage() of an SVG image
+  test_type: promise
+  canvasType: ['HTMLCanvas']
+  code: |
+    const img = new Image();
+    const imageLoadPromise = new Promise((resolve, reject) => {
+      img.onload = () => resolve();
+      img.onerror = (err) => reject(err);
+    });
+    img.src = '/images/green.svg';
+    await imageLoadPromise;
+
+    ctx.drawImage(img, 0, 0);
+    _assertPixelApprox(canvas, 50, 25, 0, 255, 0, 255, 2);
+  expected: green
+
+
+- name: 2d.drawImage.svg
+  desc: drawImage() of an SVG image
+  test_type: promise
+  canvasType: ['OffscreenCanvas']
+  code: |
+    var promise = new Promise(function(resolve, reject) {
+      var xhr = new XMLHttpRequest();
+      xhr.open("GET", '/images/green.svg');
+      xhr.responseType = 'blob';
+      xhr.send();
+      xhr.onload = function() {
+        resolve(xhr.response);
+      };
+    });
+    promise.then(function(response) {
+      createImageBitmap(response).then(bitmap => {
+        ctx.drawImage(bitmap, 0, 0);
+        _assertPixelApprox(canvas, 50,25, 0,255,0,255, 2);
+      });
+    });
+  expected: green
+
+- name: 2d.drawImage.animated.poster
+  desc: drawImage() of an APNG draws the poster frame
+  test_type: promise
+  code: |
+    const response = await fetch('/images/anim-poster-gr.png');
+    const blob = await response.blob();
+    const bitmap = await createImageBitmap(blob);
+
+    ctx.drawImage(bitmap, 0, 0);
+    @assert pixel 50,25 ==~ 0,255,0,255; @moz-todo
+  expected: green
+
+- name: 2d.drawImage.path
+  test_type: promise
+  code: |
+    ctx.fillStyle = '#0f0';
+    ctx.rect(0, 0, 100, 50);
+    const response = await fetch('/images/red.png');
+    const blob = await response.blob();
+    const bitmap = await createImageBitmap(blob);
+
+    ctx.drawImage(bitmap, 0, 0);
+    ctx.fill();
+    @assert pixel 50,25 ==~ 0,255,0,255;
+  expected: green
+
+- name: 2d.drawImage.transform
+  test_type: promise
+  code: |
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.translate(100, 0);
+    const response = await fetch('/images/red.png');
+    const blob = await response.blob();
+    const bitmap = await createImageBitmap(blob);
+
+    ctx.drawImage(bitmap, 0, 0);
+    @assert pixel 50,25 ==~ 0,255,0,255;
+  expected: green
+
+- name: 2d.drawImage.alpha
+  test_type: promise
+  code: |
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.globalAlpha = 0;
+    const response = await fetch('/images/red.png');
+    const blob = await response.blob();
+    const bitmap = await createImageBitmap(blob);
+
+    ctx.drawImage(bitmap, 0, 0);
+    @assert pixel 50,25 ==~ 0,255,0,255;
+  expected: green
+
+- name: 2d.drawImage.clip
+  test_type: promise
+  code: |
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.rect(-10, -10, 1, 1);
+    ctx.clip();
+    const response = await fetch('/images/red.png');
+    const blob = await response.blob();
+    const bitmap = await createImageBitmap(blob);
+
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.rect(-10, -10, 1, 1);
+    ctx.clip();
+    ctx.drawImage(bitmap, 0, 0);
+    @assert pixel 50,25 ==~ 0,255,0,255;
+  expected: green
+
+- name: 2d.drawImage.composite
+  test_type: promise
+  code: |
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.globalCompositeOperation = 'destination-over';
+    const response = await fetch('/images/red.png');
+    const blob = await response.blob();
+    const bitmap = await createImageBitmap(blob);
+
+    ctx.drawImage(bitmap, 0, 0);
+    @assert pixel 50,25 ==~ 0,255,0,255;
+  expected: green
+
+- name: 2d.drawImage.nowrap
+  desc: Stretched images do not get pixels wrapping around the edges
+  test_type: promise
+  code: |
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 100, 50);
+    const response = await fetch('/images/redtransparent.png');
+    const blob = await response.blob();
+    const bitmap = await createImageBitmap(blob);
+
+    ctx.drawImage(bitmap, -1950, 0, 2000, 50);
+    @assert pixel 45,25 ==~ 0,255,0,255;
+    @assert pixel 50,25 ==~ 0,255,0,255;
+    @assert pixel 55,25 ==~ 0,255,0,255;
+  expected: green
+
+- name: 2d.drawImage.nonfinite
+  desc: drawImage() with Infinity/NaN is ignored
+  test_type: promise
+  code: |
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 100, 50);
+    const response = await fetch('/images/redtransparent.png');
+    const blob = await response.blob();
+    const bitmap = await createImageBitmap(blob);
+
+    @nonfinite ctx.drawImage(, <0 Infinity -Infinity NaN>, <0 Infinity -Infinity NaN>);
+    @nonfinite ctx.drawImage(, <0 Infinity -Infinity NaN>, <0 Infinity -Infinity NaN>, <100 Infinity -Infinity NaN>, <50 Infinity -Infinity NaN>);
+    @nonfinite ctx.drawImage(, <0 Infinity -Infinity NaN>, <0 Infinity -Infinity NaN>, <100 Infinity -Infinity NaN>, <50 Infinity -Infinity NaN>, <0 Infinity -Infinity NaN>, <0 Infinity -Infinity NaN>, <100 Infinity -Infinity NaN>, <50 Infinity -Infinity NaN>);
+    @assert pixel 50,25 == 0,255,0,255;
+  expected: green
diff --git a/testing/web-platform/tests/html/canvas/tools/yaml-new/drawing-rectangles-to-the-canvas.yaml b/testing/web-platform/tests/html/canvas/tools/yaml-new/drawing-rectangles-to-the-canvas.yaml
new file mode 100644
index 0000000000..408e932abe
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/tools/yaml-new/drawing-rectangles-to-the-canvas.yaml
@@ -0,0 +1,469 @@
+- name: 2d.clearRect.basic
+  desc: clearRect clears to transparent black
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.clearRect(0, 0, 100, 50);
+    @assert pixel 50,25 == 0,0,0,0;
+  expected: clear
+
+- name: 2d.clearRect.path
+  desc: clearRect does not affect the current path
+  code: |
+    ctx.fillStyle = '#0f0';
+    ctx.beginPath();
+    ctx.rect(0, 0, 100, 50);
+    ctx.clearRect(0, 0, 16, 16);
+    ctx.fill();
+    @assert pixel 50,25 == 0,255,0,255;
+  expected: green
+
+- name: 2d.clearRect.zero
+  desc: clearRect of zero pixels has no effect
+  code: |
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.clearRect(0, 0, 100, 0);
+    ctx.clearRect(0, 0, 0, 50);
+    ctx.clearRect(0, 0, 0, 0);
+    @assert pixel 50,25 == 0,255,0,255;
+  expected: green
+
+- name: 2d.clearRect.negative
+  desc: clearRect of negative sizes works
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.clearRect(0, 0, 50, 25);
+    ctx.clearRect(100, 0, -50, 25);
+    ctx.clearRect(0, 50, 50, -25);
+    ctx.clearRect(100, 50, -50, -25);
+    @assert pixel 25,12 == 0,0,0,0;
+    @assert pixel 75,12 == 0,0,0,0;
+    @assert pixel 25,37 == 0,0,0,0;
+    @assert pixel 75,37 == 0,0,0,0;
+  expected: clear
+
+- name: 2d.clearRect.transform
+  desc: clearRect is affected by transforms
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.scale(10, 10);
+    ctx.translate(0, 5);
+    ctx.clearRect(0, -5, 10, 5);
+    @assert pixel 50,25 == 0,0,0,0;
+  expected: clear
+
+- name: 2d.clearRect.globalalpha
+  desc: clearRect is not affected by globalAlpha
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.globalAlpha = 0.1;
+    ctx.clearRect(0, 0, 100, 50);
+    @assert pixel 50,25 == 0,0,0,0;
+  expected: clear
+
+- name: 2d.clearRect.globalcomposite
+  desc: clearRect is not affected by globalCompositeOperation
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.globalCompositeOperation = 'destination-atop';
+    ctx.clearRect(0, 0, 100, 50);
+    @assert pixel 50,25 == 0,0,0,0;
+  expected: clear
+
+- name: 2d.clearRect.clip
+  desc: clearRect is affected by clipping regions
+  code: |
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.beginPath();
+    ctx.rect(0, 0, 16, 16);
+    ctx.clip();
+    ctx.clearRect(0, 0, 100, 50);
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 16, 16);
+    @assert pixel 50,25 == 0,255,0,255;
+  expected: green
+
+- name: 2d.clearRect.shadow
+  desc: clearRect does not draw shadows
+  code: |
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.shadowColor = '#f00';
+    ctx.shadowBlur = 0;
+    ctx.shadowOffsetX = 0;
+    ctx.shadowOffsetY = 50;
+    ctx.clearRect(0, -50, 100, 50);
+    @assert pixel 50,25 == 0,255,0,255;
+  expected: green
+
+- name: 2d.clearRect.nonfinite
+  desc: clearRect() with Infinity/NaN is ignored
+  code: |
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 100, 50);
+    @nonfinite ctx.clearRect(<0 Infinity -Infinity NaN>, <0 Infinity -Infinity NaN>, <100 Infinity -Infinity NaN>, <50 Infinity -Infinity NaN>);
+    @assert pixel 50,25 == 0,255,0,255;
+  expected: green
+
+
+- name: 2d.fillRect.basic
+  desc: fillRect works
+  code: |
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 100, 50);
+    @assert pixel 50,25 == 0,255,0,255;
+  expected: green
+
+- name: 2d.fillRect.path
+  desc: fillRect does not affect the current path
+  code: |
+    ctx.beginPath();
+    ctx.rect(0, 0, 100, 50);
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 16, 16);
+    ctx.fillStyle = '#0f0';
+    ctx.fill();
+    @assert pixel 50,25 == 0,255,0,255;
+  expected: green
+
+- name: 2d.fillRect.zero
+  desc: fillRect of zero pixels has no effect
+  code: |
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 0);
+    ctx.fillRect(0, 0, 0, 50);
+    ctx.fillRect(0, 0, 0, 0);
+    @assert pixel 50,25 == 0,255,0,255;
+  expected: green
+
+- name: 2d.fillRect.negative
+  desc: fillRect of negative sizes works
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 50, 25);
+    ctx.fillRect(100, 0, -50, 25);
+    ctx.fillRect(0, 50, 50, -25);
+    ctx.fillRect(100, 50, -50, -25);
+    @assert pixel 25,12 == 0,255,0,255;
+    @assert pixel 75,12 == 0,255,0,255;
+    @assert pixel 25,37 == 0,255,0,255;
+    @assert pixel 75,37 == 0,255,0,255;
+  expected: green
+
+- name: 2d.fillRect.transform
+  desc: fillRect is affected by transforms
+  code: |
+    ctx.scale(10, 10);
+    ctx.translate(0, 5);
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, -5, 10, 5);
+    @assert pixel 50,25 == 0,255,0,255;
+  expected: green
+
+# don't bother testing globalalpha, globalcomposite because they're already heavily used by other test cases
+
+- name: 2d.fillRect.clip
+  desc: fillRect is affected by clipping regions
+  code: |
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.beginPath();
+    ctx.rect(0, 0, 16, 16);
+    ctx.clip();
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 16, 16);
+    @assert pixel 50,25 == 0,255,0,255;
+  expected: green
+
+- name: 2d.fillRect.shadow
+  desc: fillRect draws shadows
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.shadowColor = '#0f0';
+    ctx.shadowBlur = 0;
+    ctx.shadowOffsetX = 0;
+    ctx.shadowOffsetY = 50;
+    ctx.fillRect(0, -50, 100, 50);
+    @assert pixel 50,25 == 0,255,0,255;
+  expected: green
+
+- name: 2d.fillRect.nonfinite
+  desc: fillRect() with Infinity/NaN is ignored
+  code: |
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.fillStyle = '#f00';
+    @nonfinite ctx.fillRect(<0 Infinity -Infinity NaN>, <0 Infinity -Infinity NaN>, <100 Infinity -Infinity NaN>, <50 Infinity -Infinity NaN>);
+    @assert pixel 50,25 == 0,255,0,255;
+  expected: green
+
+
+- name: 2d.strokeRect.basic
+  desc: strokeRect works
+  code: |
+    ctx.strokeStyle = '#0f0';
+    ctx.lineWidth = 50;
+    ctx.strokeRect(25, 24, 50, 2);
+    @assert pixel 50,25 == 0,255,0,255;
+  expected: green
+
+- name: 2d.strokeRect.path
+  desc: strokeRect does not affect the current path
+  code: |
+    ctx.beginPath();
+    ctx.rect(0, 0, 100, 50);
+    ctx.strokeStyle = '#f00';
+    ctx.lineWidth = 5;
+    ctx.strokeRect(0, 0, 16, 16);
+    ctx.fillStyle = '#0f0';
+    ctx.fill();
+    @assert pixel 50,25 == 0,255,0,255;
+  expected: green
+
+- name: 2d.strokeRect.zero.1
+  desc: strokeRect of 0x0 pixels draws nothing
+  code: |
+    ctx.strokeStyle = '#f00';
+    ctx.lineWidth = 250;
+    ctx.strokeRect(50, 25, 0, 0);
+    @assert pixel 50,25 == 0,0,0,0;
+  expected: clear
+
+- name: 2d.strokeRect.zero.2
+  desc: strokeRect of 0x0 pixels draws nothing, including caps and joins
+  code: |
+    ctx.strokeStyle = '#f00';
+    ctx.lineWidth = 250;
+    ctx.lineCap = 'round';
+    ctx.lineJoin = 'round';
+    ctx.strokeRect(50, 25, 0, 0);
+    @assert pixel 50,25 == 0,0,0,0;
+  expected: clear
+
+- name: 2d.strokeRect.zero.3
+  desc: strokeRect of Nx0 pixels draws a straight line
+  code: |
+    ctx.strokeStyle = '#0f0';
+    ctx.lineWidth = 50;
+    ctx.strokeRect(0, 25, 100, 0);
+    @assert pixel 50,25 == 0,255,0,255;
+  expected: green
+
+- name: 2d.strokeRect.zero.4
+  desc: strokeRect of Nx0 pixels draws a closed line with no caps
+  code: |
+    ctx.strokeStyle = '#f00';
+    ctx.lineWidth = 250;
+    ctx.lineCap = 'round';
+    ctx.strokeRect(100, 25, 100, 0);
+    @assert pixel 50,25 == 0,0,0,0;
+  expected: clear
+
+- name: 2d.strokeRect.zero.5
+  desc: strokeRect of Nx0 pixels draws a closed line with joins
+  code: |
+    ctx.strokeStyle = '#0f0';
+    ctx.lineWidth = 250;
+    ctx.lineJoin = 'round';
+    ctx.strokeRect(100, 25, 100, 0);
+    @assert pixel 50,25 == 0,255,0,255;
+  expected: green
+
+- name: 2d.strokeRect.negative
+  desc: strokeRect of negative sizes works
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.strokeStyle = '#0f0';
+    ctx.lineWidth = 25;
+    ctx.strokeRect(12, 12, 26, 1);
+    ctx.strokeRect(88, 12, -26, 1);
+    ctx.strokeRect(12, 38, 26, -1);
+    ctx.strokeRect(88, 38, -26, -1);
+    @assert pixel 25,12 == 0,255,0,255;
+    @assert pixel 75,12 == 0,255,0,255;
+    @assert pixel 25,37 == 0,255,0,255;
+    @assert pixel 75,37 == 0,255,0,255;
+  expected: green
+
+- name: 2d.strokeRect.transform
+  desc: fillRect is affected by transforms
+  code: |
+    ctx.scale(10, 10);
+    ctx.translate(0, 5);
+    ctx.strokeStyle = '#0f0';
+    ctx.lineWidth = 5;
+    ctx.strokeRect(2.5, -2.6, 5, 0.2);
+    @assert pixel 50,25 == 0,255,0,255;
+  expected: green
+
+- name: 2d.strokeRect.globalalpha
+  desc: strokeRect is affected by globalAlpha
+  code: |
+    ctx.globalAlpha = 0;
+    ctx.strokeStyle = '#f00';
+    ctx.lineWidth = 50;
+    ctx.strokeRect(25, 24, 50, 2);
+    @assert pixel 50,25 == 0,0,0,0;
+  expected: clear
+
+- name: 2d.strokeRect.globalcomposite
+  desc: strokeRect is not affected by globalCompositeOperation
+  code: |
+    ctx.globalCompositeOperation = 'source-in';
+    ctx.strokeStyle = '#f00';
+    ctx.lineWidth = 50;
+    ctx.strokeRect(25, 24, 50, 2);
+    @assert pixel 50,25 == 0,0,0,0;
+  expected: clear
+
+- name: 2d.strokeRect.clip
+  desc: strokeRect is affected by clipping regions
+  code: |
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.beginPath();
+    ctx.rect(0, 0, 16, 16);
+    ctx.clip();
+    ctx.strokeStyle = '#f00';
+    ctx.lineWidth = 50;
+    ctx.strokeRect(0, 0, 100, 50);
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 16, 16);
+    @assert pixel 50,25 == 0,255,0,255;
+  expected: green
+
+- name: 2d.strokeRect.shadow
+  desc: strokeRect draws shadows
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.fillStyle = '#f00';
+    ctx.shadowColor = '#0f0';
+    ctx.shadowBlur = 0;
+    ctx.shadowOffsetX = 0;
+    ctx.shadowOffsetY = 50;
+    ctx.strokeStyle = '#f00';
+    ctx.lineWidth = 50;
+    ctx.strokeRect(0, -75, 100, 50);
+    @assert pixel 50,25 == 0,255,0,255;
+  expected: green
+
+- name: 2d.strokeRect.nonfinite
+  desc: strokeRect() with Infinity/NaN is ignored
+  code: |
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.strokeStyle = '#f00';
+    ctx.lineWidth = 150;
+    @nonfinite ctx.strokeRect(<0 Infinity -Infinity NaN>, <0 Infinity -Infinity NaN>, <100 Infinity -Infinity NaN>, <50 Infinity -Infinity NaN>);
+    @assert pixel 50,25 == 0,255,0,255;
+  expected: green
+
+- name: 2d.fillStyle.colorObject
+  desc: ctx.fillStyle works with color objects
+  canvasType:
+    ['HTMLCanvas']
+  code: |
+    ctx.fillStyle = {r: 1, g: 0, b: 0};
+    ctx.fillRect(0, 0, 100, 50);
+    @assert pixel 50,25 == 255,0,0,255;
+    ctx.fillStyle = {r: 0, g: 0, b: 1};
+    ctx.fillRect(0, 0, 100, 50);
+    @assert pixel 50,25 == 0,0,255,255;
+    ctx.fillStyle = {r: 0.2, g: 0.4, b: 0.6};
+    ctx.fillRect(0, 0, 100, 50);
+    @assert pixel 50,25 == 51,102,153,255;
+    ctx.fillStyle = {r: 0, g: 1, b: 0};
+    ctx.fillRect(0, 0, 100, 50);
+    @assert pixel 50,25 == 0,255,0,255;
+    ctx.fillStyle = {r: -1, g: 0, b: 0};
+    ctx.fillRect(0, 0, 100, 50);
+    @assert pixel 50,25 == 0,0,0,255;
+    ctx.fillStyle = {r: 0, g: 2, b: 0};
+    ctx.fillRect(0, 0, 100, 50);
+    @assert pixel 50,25 == 0,255,0,255;
+  expected: green
+
+- name: 2d.fillStyle.colorObject.transparency
+  desc: ctx.fillStyle with color objects has transparency
+  canvasType:
+    ['HTMLCanvas']
+  code: |
+    ctx.fillStyle = {r: 0, g: 1, b: 0, a: 0};
+    ctx.fillRect(0, 0, 100, 50);
+    @assert pixel 50,25 == 0,0,0,0;
+    ctx.clearRect(0, 0, 100, 50);
+    ctx.fillStyle = {r: 0, g: 1, b: 0, a: -1};
+    ctx.fillRect(0, 0, 100, 50);
+    @assert pixel 50,25 == 0,0,0,0;
+    ctx.clearRect(0, 0, 100, 50);
+    ctx.fillStyle = {r: 0, g: 1, b: 0, a: 0.5};
+    ctx.fillRect(0, 0, 100, 50);
+    @assert pixel 50,25 == 0,255,0,128;
+    ctx.clearRect(0, 0, 100, 50);
+    ctx.fillStyle = {r: 0, g: 1, b: 0, a: 1};
+    ctx.fillRect(0, 0, 100, 50);
+    @assert pixel 50,25 == 0,255,0,255;
+  expected: green
+
+- name: 2d.strokeStyle.colorObject
+  desc: ctx.strokeStyle works with color objects
+  canvasType:
+    ['HTMLCanvas']
+  code: |
+    ctx.lineWidth = 50;
+    ctx.strokeStyle = {r: 1, g: 0, b: 0};
+    ctx.strokeRect(25, 24, 50, 2);
+    @assert pixel 50,25 == 255,0,0,255;
+    ctx.strokeStyle = {r: 0, g: 0, b: 1};
+    ctx.strokeRect(25, 24, 50, 2);
+    @assert pixel 50,25 == 0,0,255,255;
+    ctx.strokeStyle = {r: 0.2, g: 0.4, b: 0.6};
+    ctx.strokeRect(25, 24, 50, 2);
+    @assert pixel 50,25 == 51,102,153,255;
+    ctx.strokeStyle = {r: 0, g: 1, b: 0};
+    ctx.strokeRect(25, 24, 50, 2);
+    @assert pixel 50,25 == 0,255,0,255;
+    ctx.strokeStyle = {r: -1, g: 0, b: 0};
+    ctx.strokeRect(25, 24, 50, 2);
+    @assert pixel 50,25 == 0,0,0,255;
+    ctx.strokeStyle = {r: 0, g: 2, b: 0};
+    ctx.strokeRect(25, 24, 50, 2);
+    @assert pixel 50,25 == 0,255,0,255;
+  expected: green
+
+- name: 2d.strokeStyle.colorObject.transparency
+  desc: ctx.strokeStyle with color objects has transparency
+  canvasType:
+    ['HTMLCanvas']
+  code: |
+    ctx.lineWidth = 50;
+    ctx.strokeStyle = {r: 0, g: 1, b: 0, a: 0};
+    ctx.strokeRect(25, 24, 50, 2);
+    @assert pixel 50,25 == 0,0,0,0;
+    ctx.strokeStyle = {r: 0, g: 1, b: 0, a: -1};
+    ctx.strokeRect(25, 24, 50, 2);
+    @assert pixel 50,25 == 0,0,0,0;
+    ctx.clearRect(0, 0, 100, 50);
+    ctx.strokeStyle = {r: 0, g: 1, b: 0, a: 0.5};
+    ctx.strokeRect(25, 24, 50, 2);
+    @assert pixel 50,25 == 0,255,0,128;
+    ctx.clearRect(0, 0, 100, 50);
+    ctx.strokeStyle = {r: 0, g: 1, b: 0, a: 1};
+    ctx.strokeRect(25, 24, 50, 2);
+    @assert pixel 50,25 == 0,255,0,255;
+  expected: green
diff --git a/testing/web-platform/tests/html/canvas/tools/yaml-new/filters.yaml b/testing/web-platform/tests/html/canvas/tools/yaml-new/filters.yaml
new file mode 100644
index 0000000000..dd84f913f9
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/tools/yaml-new/filters.yaml
@@ -0,0 +1,639 @@
+- name: 2d.filter.value
+  desc: test if ctx.filter works correctly
+  code: |
+    @assert ctx.filter == 'none';
+    ctx.filter = 'blur(5px)';
+    @assert ctx.filter == 'blur(5px)';
+    ctx.save();
+    ctx.filter = 'none';
+    @assert ctx.filter == 'none';
+    ctx.restore();
+    @assert ctx.filter == 'blur(5px)';
+
+    ctx.filter = 'blur(10)';
+    @assert ctx.filter == 'blur(5px)';
+    ctx.filter = 'blur 10px';
+    @assert ctx.filter == 'blur(5px)';
+
+    ctx.filter = 'inherit';
+    @assert ctx.filter == 'blur(5px)';
+    ctx.filter = 'initial';
+    @assert ctx.filter == 'blur(5px)';
+    ctx.filter = 'unset';
+    @assert ctx.filter == 'blur(5px)';
+
+    ctx.filter = '';
+    @assert ctx.filter == 'blur(5px)';
+    ctx.filter = null;
+    @assert ctx.filter == 'blur(5px)';
+    ctx.filter = undefined;
+    @assert ctx.filter == 'blur(5px)';
+
+    ctx.filter = 'blur(  5px)';
+    assert_equals(ctx.filter, 'blur(  5px)');
+
+- name: 2d.filter.canvasFilterObject.tentative
+  desc: Test CanvasFilter() object
+  canvasType:
+    ['HTMLCanvas']
+  code: |
+    @assert ctx.filter == 'none';
+    ctx.filter = 'blur(5px)';
+    @assert ctx.filter == 'blur(5px)';
+    ctx.filter = new CanvasFilter({filter: 'gaussianBlur', stdDeviation: 5});
+    @assert ctx.filter.toString() == '[object CanvasFilter]';
+    ctx.filter = new CanvasFilter([
+        {filter: 'gaussianBlur', stdDeviation: 5},
+        {filter: 'gaussianBlur', stdDeviation: 10}
+    ]);
+    @assert ctx.filter.toString() == '[object CanvasFilter]';
+    var canvas2 = document.createElement('canvas');
+    var ctx2 = canvas2.getContext('2d');
+    ctx2.filter = ctx.filter;
+    @assert ctx.filter.toString() == '[object CanvasFilter]';
+    ctx.filter = 'blur(5px)';
+    @assert ctx.filter == 'blur(5px)';
+    ctx.filter = 'none';
+    @assert ctx.filter == 'none';
+    ctx.filter = new CanvasFilter({filter: 'gaussianBlur', stdDeviation: 5});
+    ctx.filter = 'this string is not a filter and should do nothing';
+    @assert ctx.filter.toString() == '[object CanvasFilter]';
+
+- name: 2d.filter.canvasFilterObject.tentative
+  desc: Test CanvasFilter() object
+  canvasType: ['OffscreenCanvas']
+  code: |
+    @assert ctx.filter == 'none';
+    ctx.filter = 'blur(5px)';
+    @assert ctx.filter == 'blur(5px)';
+    ctx.filter = new CanvasFilter({filter: 'gaussianBlur', stdDeviation: 5});
+    @assert ctx.filter.toString() == '[object CanvasFilter]';
+    ctx.filter = new CanvasFilter([
+        {filter: 'gaussianBlur', stdDeviation: 5},
+        {filter: 'gaussianBlur', stdDeviation: 10}
+    ]);
+    @assert ctx.filter.toString() == '[object CanvasFilter]';
+    var canvas2 = new OffscreenCanvas(100, 50);
+    var ctx2 = canvas2.getContext('2d');
+    ctx2.filter = ctx.filter;
+    @assert ctx.filter.toString() == '[object CanvasFilter]';
+    ctx.filter = 'blur(5px)';
+    @assert ctx.filter == 'blur(5px)';
+    ctx.filter = 'none';
+    @assert ctx.filter == 'none';
+    ctx.filter = new CanvasFilter({filter: 'gaussianBlur', stdDeviation: 5});
+    ctx.filter = 'this string is not a filter and should do nothing';
+    @assert ctx.filter.toString() == '[object CanvasFilter]';
+
+- name: 2d.filter.canvasFilterObject.blur.exceptions.tentative
+  desc: Test exceptions on CanvasFilter() blur.object
+  code: |
+    @assert throws TypeError ctx.filter = new CanvasFilter({filter: 'gaussianBlur'});
+    @assert throws TypeError ctx.filter = new CanvasFilter({filter: 'gaussianBlur', stdDeviation: undefined});
+    @assert throws TypeError ctx.filter = new CanvasFilter({filter: 'gaussianBlur', stdDeviation: 'foo'});
+    @assert throws TypeError ctx.filter = new CanvasFilter({filter: 'gaussianBlur', stdDeviation: [1,2]});
+    @assert throws TypeError ctx.filter = new CanvasFilter({filter: 'gaussianBlur', stdDeviation: NaN});
+    @assert throws TypeError ctx.filter = new CanvasFilter({filter: 'gaussianBlur', stdDeviation: {}});
+
+- name: 2d.filter.canvasFilterObject.colorMatrix.tentative
+  desc: Test the functionality of ColorMatrix filters in CanvasFilter objects
+  code: |
+    @assert throws TypeError new CanvasFilter({filter: 'colorMatrix', values: undefined});
+    @assert throws TypeError new CanvasFilter({filter: 'colorMatrix', values: 'foo'});
+    @assert throws TypeError new CanvasFilter({filter: 'colorMatrix', values: null});
+    @assert throws TypeError new CanvasFilter({filter: 'colorMatrix', values: [1, 2, 3]});
+    @assert throws TypeError new CanvasFilter({filter: 'colorMatrix', values: [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 'a']});
+    @assert throws TypeError new CanvasFilter({filter: 'colorMatrix', values: [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, Infinity]});
+    ctx.fillStyle = '#f00';
+    ctx.filter = new CanvasFilter({filter: 'colorMatrix', type: 'hueRotate', values: 0});
+    ctx.fillRect(0, 0, 100, 50);
+    @assert pixel 10,10 ==~ 255,0,0,255;
+    ctx.filter = new CanvasFilter({filter: 'colorMatrix', type: 'hueRotate', values: 90});
+    ctx.fillRect(0, 0, 100, 50);
+    @assert pixel 10,10 ==~ 0,91,0,255;
+    ctx.filter = new CanvasFilter({filter: 'colorMatrix', type: 'hueRotate', values: 180});
+    ctx.fillRect(0, 0, 100, 50);
+    @assert pixel 10,10 ==~ 0,109,109,255;
+    ctx.filter = new CanvasFilter({filter: 'colorMatrix', type: 'hueRotate', values: 270});
+    ctx.fillRect(0, 0, 100, 50);
+    @assert pixel 10,10 ==~ 109,18,255,255;
+    ctx.filter = new CanvasFilter({filter: 'colorMatrix', type: 'saturate', values: 0.5});
+    ctx.fillRect(0, 0, 100, 50);
+    @assert pixel 10,10 ==~ 155,27,27,255;
+    ctx.clearRect(0, 0, 100, 50);
+    ctx.filter = new CanvasFilter({filter: 'colorMatrix', type: 'luminanceToAlpha'});
+    ctx.fillRect(0, 0, 100, 50);
+    @assert pixel 10,10 ==~ 0,0,0,54;
+    ctx.filter = new CanvasFilter({filter: 'colorMatrix', values: [
+            0, 0, 0, 0, 0,
+            1, 1, 1, 1, 0,
+            0, 0, 0, 0, 0,
+            0, 0, 0, 1, 0
+    ]});
+    ctx.fillRect(0, 0, 50, 25);
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(50, 0, 50, 25);
+    ctx.fillStyle = '#00f';
+    ctx.fillRect(0, 25, 50, 25);
+    ctx.fillStyle = '#fff';
+    ctx.fillRect(50, 25, 50, 25);
+    @assert pixel 10,10 ==~ 0,255,0,255;
+    @assert pixel 60,10 ==~ 0,255,0,255;
+    @assert pixel 10,30 ==~ 0,255,0,255;
+    @assert pixel 60,30 ==~ 0,255,0,255;
+
+- name: 2d.filter.canvasFilterObject.convolveMatrix.exceptions.tentative
+  desc: Test exceptions on CanvasFilter() convolveMatrix
+  code: |
+    @assert throws TypeError new CanvasFilter({filter: 'convolveMatrix'});
+    @assert throws TypeError new CanvasFilter({filter: 'convolveMatrix', divisor: 2});
+    @assert throws TypeError new CanvasFilter({filter: 'convolveMatrix', kernelMatrix: null});
+    @assert throws TypeError new CanvasFilter({filter: 'convolveMatrix', kernelMatrix: 1});
+    @assert throws TypeError new CanvasFilter({filter: 'convolveMatrix', kernelMatrix: [[1, 0], [0]]});
+    @assert throws TypeError new CanvasFilter({filter: 'convolveMatrix', kernelMatrix: [[1, 'a'], [0]]});
+    @assert throws TypeError new CanvasFilter({filter: 'convolveMatrix', kernelMatrix: [[1, 0], 0]});
+    @assert throws TypeError new CanvasFilter({filter: 'convolveMatrix', kernelMatrix: [[1, 0], [0, Infinity]]});
+    @assert throws TypeError new CanvasFilter({filter: 'convolveMatrix', kernelMatrix: []});
+    @assert throws TypeError new CanvasFilter({filter: 'convolveMatrix', kernelMatrix: [1]});
+    @assert throws TypeError new CanvasFilter({filter: 'convolveMatrix', kernelMatrix: [1, 2, 3, 4]});
+    @assert throws TypeError new CanvasFilter({filter: 'convolveMatrix', kernelMatrix: [[], []]});
+    @assert throws TypeError new CanvasFilter({filter: 'convolveMatrix', kernelMatrix: [[1, 2], []]});
+    @assert throws TypeError new CanvasFilter({filter: 'convolveMatrix', kernelMatrix: [[], [1, 2]]});
+    // This should not throw an error
+    ctx.filter = new CanvasFilter({filter: 'convolveMatrix', kernelMatrix: [[]]});
+    ctx.filter = new CanvasFilter({filter: 'convolveMatrix', kernelMatrix: [[1]]});
+
+- name: 2d.filter.canvasFilterObject.componentTransfer.linear.tentative
+  desc: Test pixels on CanvasFilter() componentTransfer with linear type
+  code: |
+    // From https://www.w3.org/TR/SVG11/filters.html#feComponentTransferElement
+    function getColor(inputColor, slopes, intercepts) {
+        return [
+            Math.max(0, Math.min(1, inputColor[0]/255 * slopes[0] + intercepts[0])) * 255,
+            Math.max(0, Math.min(1, inputColor[1]/255 * slopes[1] + intercepts[1])) * 255,
+            Math.max(0, Math.min(1, inputColor[2]/255 * slopes[2] + intercepts[2])) * 255,
+        ];
+    }
+
+    const slopes = [0.5, 1.2, -0.2];
+    const intercepts = [0.25, 0, 0.5];
+    ctx.filter = new CanvasFilter({filter: 'componentTransfer',
+        funcR: {type: 'linear', slope: slopes[0], intercept: intercepts[0]},
+        funcG: {type: 'linear', slope: slopes[1], intercept: intercepts[1]},
+        funcB: {type: 'linear', slope: slopes[2], intercept: intercepts[2]},
+    });
+
+    const inputColors = [
+        [255, 255, 255],
+        [0, 0, 0],
+        [127, 0, 34],
+        [252, 186, 3],
+        [50, 68, 87],
+    ];
+
+    for (const color of inputColors) {
+        let outputColor = getColor(color, slopes, intercepts);
+        ctx.fillStyle = `rgb(${color[0]}, ${color[1]}, ${color[2]})`;
+        ctx.fillRect(0, 0, 10, 10);
+        _assertPixelApprox(canvas, 5, 5, outputColor[0],outputColor[1],outputColor[2],255, 2);
+    }
+
+- name: 2d.filter.canvasFilterObject.componentTransfer.identity.tentative
+  desc: Test pixels on CanvasFilter() componentTransfer with identity type
+  code: |
+    ctx.filter = new CanvasFilter({filter: 'componentTransfer',
+        funcR: {type: 'identity'},
+        funcG: {type: 'identity'},
+        funcB: {type: 'identity'},
+    });
+
+    const inputColors = [
+        [255, 255, 255],
+        [0, 0, 0],
+        [127, 0, 34],
+        [252, 186, 3],
+        [50, 68, 87],
+    ];
+
+    for (const color of inputColors) {
+        ctx.fillStyle = `rgba(${color[0]}, ${color[1]}, ${color[2]}, 1)`,
+        ctx.fillRect(0, 0, 10, 10);
+        _assertPixel(canvas, 5, 5, color[0],color[1],color[2],255);
+    }
+
+- name: 2d.filter.canvasFilterObject.componentTransfer.gamma.tentative
+  desc: Test pixels on CanvasFilter() componentTransfer with gamma type
+  code: |
+    // From https://www.w3.org/TR/SVG11/filters.html#feComponentTransferElement
+    function getColor(inputColor, amplitude, exponent, offset) {
+        return [
+            Math.max(0, Math.min(1, Math.pow(inputColor[0]/255, exponent[0]) * amplitude[0] + offset[0])) * 255,
+            Math.max(0, Math.min(1, Math.pow(inputColor[1]/255, exponent[1]) * amplitude[1] + offset[1])) * 255,
+            Math.max(0, Math.min(1, Math.pow(inputColor[2]/255, exponent[2]) * amplitude[2] + offset[2])) * 255,
+        ];
+    }
+
+    const amplitudes = [2, 1.1, 0.5];
+    const exponents = [5, 3, 1];
+    const offsets = [0.25, 0, 0.5];
+    ctx.filter = new CanvasFilter({filter: 'componentTransfer',
+        funcR: {type: 'gamma', amplitude: amplitudes[0], exponent: exponents[0], offset: offsets[0]},
+        funcG: {type: 'gamma', amplitude: amplitudes[1], exponent: exponents[1], offset: offsets[1]},
+        funcB: {type: 'gamma', amplitude: amplitudes[2], exponent: exponents[2], offset: offsets[2]},
+    });
+
+    const inputColors = [
+        [255, 255, 255],
+        [0, 0, 0],
+        [127, 0, 34],
+        [252, 186, 3],
+        [50, 68, 87],
+    ];
+
+    for (const color of inputColors) {
+        let outputColor = getColor(color, amplitudes, exponents, offsets);
+        ctx.fillStyle = `rgb(${color[0]}, ${color[1]}, ${color[2]})`;
+        ctx.fillRect(0, 0, 10, 10);
+        _assertPixelApprox(canvas, 5, 5, outputColor[0],outputColor[1],outputColor[2],255, 2);
+    }
+
+- name: 2d.filter.canvasFilterObject.componentTransfer.table.tentative
+  desc: Test pixels on CanvasFilter() componentTransfer with table type
+  code: |
+    // From https://www.w3.org/TR/SVG11/filters.html#feComponentTransferElement
+    function getTransformedValue(C, V) {
+        // Get the right interval
+        const n = V.length - 1;
+        const k = C == 1 ? n - 1 : Math.floor(C * n);
+        return V[k] + (C - k/n) * n * (V[k + 1] - V[k]);
+    }
+
+    function getColor(inputColor, tableValues) {
+        const result = [0, 0, 0];
+        for (const i in inputColor) {
+            const C = inputColor[i]/255;
+            const Cprime = getTransformedValue(C, tableValues[i]);
+            result[i] = Math.max(0, Math.min(1, Cprime)) * 255;
+        }
+        return result;
+    }
+
+    tableValuesR = [0, 0, 1, 1];
+    tableValuesG = [2, 0, 0.5, 3];
+    tableValuesB = [1, -1, 5, 0];
+    ctx.filter = new CanvasFilter({filter: 'componentTransfer',
+        funcR: {type: 'table', tableValues: tableValuesR},
+        funcG: {type: 'table', tableValues: tableValuesG},
+        funcB: {type: 'table', tableValues: tableValuesB},
+    });
+
+    const inputColors = [
+        [255, 255, 255],
+        [0, 0, 0],
+        [127, 0, 34],
+        [252, 186, 3],
+        [50, 68, 87],
+    ];
+
+    for (const color of inputColors) {
+        let outputColor = getColor(color, [tableValuesR, tableValuesG, tableValuesB]);
+        ctx.fillStyle = `rgb(${color[0]}, ${color[1]}, ${color[2]})`;
+        ctx.fillRect(0, 0, 10, 10);
+        _assertPixelApprox(canvas, 5, 5, outputColor[0],outputColor[1],outputColor[2],255, 2);
+    }
+
+- name: 2d.filter.canvasFilterObject.componentTransfer.discrete.tentative
+  desc: Test pixels on CanvasFilter() componentTransfer with discrete type
+  code: |
+    // From https://www.w3.org/TR/SVG11/filters.html#feComponentTransferElement
+    function getTransformedValue(C, V) {
+        // Get the right interval
+        const n = V.length;
+        const k = C == 1 ? n - 1 : Math.floor(C * n);
+        return V[k];
+    }
+
+    function getColor(inputColor, tableValues) {
+        const result = [0, 0, 0];
+        for (const i in inputColor) {
+            const C = inputColor[i]/255;
+            const Cprime = getTransformedValue(C, tableValues[i]);
+            result[i] = Math.max(0, Math.min(1, Cprime)) * 255;
+        }
+        return result;
+    }
+
+    tableValuesR = [0, 0, 1, 1];
+    tableValuesG = [2, 0, 0.5, 3];
+    tableValuesB = [1, -1, 5, 0];
+    ctx.filter = new CanvasFilter({filter: 'componentTransfer',
+        funcR: {type: 'discrete', tableValues: tableValuesR},
+        funcG: {type: 'discrete', tableValues: tableValuesG},
+        funcB: {type: 'discrete', tableValues: tableValuesB},
+    });
+
+    const inputColors = [
+        [255, 255, 255],
+        [0, 0, 0],
+        [127, 0, 34],
+        [252, 186, 3],
+        [50, 68, 87],
+    ];
+
+    for (const color of inputColors) {
+        let outputColor = getColor(color, [tableValuesR, tableValuesG, tableValuesB]);
+        ctx.fillStyle = `rgb(${color[0]}, ${color[1]}, ${color[2]})`;
+        ctx.fillRect(0, 0, 10, 10);
+        _assertPixelApprox(canvas, 5, 5, outputColor[0],outputColor[1],outputColor[2],255, 2);
+    }
+
+- name: 2d.filter.canvasFilterObject.dropShadow.tentative
+  desc: Test CanvasFilter() dropShadow object.
+  size: 520, 420
+  code: |
+    ctx.fillStyle = 'teal';
+    ctx.fillRect(0, 0, 520, 50);
+    ctx.fillRect(0, 100, 520, 50);
+    ctx.fillRect(0, 200, 520, 50);
+    ctx.fillRect(0, 300, 520, 50);
+
+    ctx.fillStyle = 'crimson';
+
+    // Parameter defaults.
+    ctx.filter = new CanvasFilter({filter: 'dropShadow'});
+    ctx.fillRect(10, 10, 80, 80);
+
+    // All parameters specified.
+    ctx.filter = new CanvasFilter(
+      {filter: 'dropShadow', dx: 9, dy: 12, stdDeviation: 5,
+       floodColor: 'purple', floodOpacity: 0.7});
+    ctx.fillRect(110, 10, 80, 80);
+
+    // Named color.
+    ctx.filter = new CanvasFilter(
+      {filter: 'dropShadow', dx: 9, dy: 12, stdDeviation: 3,
+       floodColor: 'purple'});
+    ctx.fillRect(10, 110, 80, 80);
+
+    // System color.
+    ctx.filter = new CanvasFilter(
+      {filter: 'dropShadow', dx: 9, dy: 12, stdDeviation: 3,
+       floodColor: 'LinkText'});
+    ctx.fillRect(110, 110, 80, 80);
+
+    // Numerical color.
+    ctx.filter = new CanvasFilter(
+      {filter: 'dropShadow', dx: 9, dy: 12, stdDeviation: 3,
+       floodColor: 'rgba(20, 50, 130, 1)'});
+    ctx.fillRect(210, 110, 80, 80);
+
+    // Transparent floodColor.
+    ctx.filter = new CanvasFilter(
+      {filter: 'dropShadow', dx: 9, dy: 12, stdDeviation: 3,
+       floodColor: 'rgba(20, 50, 130, 0.7)'});
+    ctx.fillRect(310, 110, 80, 80);
+
+    // Transparent floodColor and floodOpacity.
+    ctx.filter = new CanvasFilter(
+      {filter: 'dropShadow', dx: 9, dy: 12, stdDeviation: 3,
+       floodColor: 'rgba(20, 50, 130, 0.7)', floodOpacity: 0.7});
+    ctx.fillRect(410, 110, 80, 80);
+
+    // No blur.
+    ctx.filter = new CanvasFilter(
+      {filter: 'dropShadow', dx: 9, dy: 12, stdDeviation: 0,
+       floodColor: 'purple'});
+    ctx.fillRect(10, 210, 80, 80);
+
+    // Single float blur.
+    ctx.filter = new CanvasFilter(
+      {filter: 'dropShadow', dx: 9, dy: 12, stdDeviation: 5,
+       floodColor: 'purple'});
+    ctx.fillRect(110, 210, 80, 80);
+
+    // Single negative float blur.
+    ctx.filter = new CanvasFilter(
+      {filter: 'dropShadow', dx: 9, dy: 12, stdDeviation: -5,
+       floodColor: 'purple'});
+    ctx.fillRect(210, 210, 80, 80);
+
+    // Two floats (X&Y) blur.
+    ctx.filter = new CanvasFilter(
+      {filter: 'dropShadow', dx: 9, dy: 12, stdDeviation: [3, 5],
+       floodColor: 'purple'});
+    ctx.fillRect(310, 210, 80, 80);
+
+    // Two negative floats (X&Y) blur.
+    ctx.filter = new CanvasFilter(
+      {filter: 'dropShadow', dx: 9, dy: 12, stdDeviation: [-3, -5],
+       floodColor: 'purple'});
+    ctx.fillRect(410, 210, 80, 80);
+
+    // Degenerate parameter values.
+    ctx.filter = new CanvasFilter(
+      {filter: 'dropShadow', dx: [-5], dy: [], stdDeviation: null,
+       floodColor: 'purple', floodOpacity: [2]});
+    ctx.fillRect(10, 310, 80, 80);
+
+    ctx.filter = new CanvasFilter(
+      {filter: 'dropShadow', dx: null, dy: '5', stdDeviation: [[-5], ['3']],
+       floodColor: 'purple', floodOpacity: '0.8'});
+    ctx.fillRect(110, 310, 80, 80);
+
+    ctx.filter = new CanvasFilter(
+      {filter: 'dropShadow', dx: true, dy: ['10'], stdDeviation: false,
+       floodColor: 'purple', floodOpacity: ['0.4']});
+    ctx.fillRect(210, 310, 80, 80);
+  html_reference: |
+    
+      
+      
+      
+      
+
+      
+      
+
+      
+      
+      
+      
+      
+
+      
+      
+      
+      
+        
+      
+      
+      
+
+      
+      
+        
+      
+      
+      
+    
+
+- name: 2d.filter.canvasFilterObject.dropShadow.exceptions.tentative
+  desc: Test exceptions on CanvasFilter() dropShadow object
+  code: |
+    @unroll @assert new CanvasFilter({\-
+        filter: 'dropShadow', \-
+        : \-
+        <10 | -1 | 0.5 | null | true | false | [] | [20] | '30'>});
+    @unroll @assert new CanvasFilter({\-
+        filter: 'dropShadow', \-
+        : \-
+        <10 | -1 | 0.5 | null | true | false | [] | [20] | '30' | \-
+         [10, -1] | [0.5, null] | [true, false] | [[], [20]] | \-
+         ['30', ['40']]>});
+    @unroll @assert new CanvasFilter({\-
+        filter: 'dropShadow', \-
+        : \-
+        <'red' | 'canvas' | 'rgba(4, -3, 0.5, 1)' | '#aabbccdd' | '#abcd'>});
+
+    @unroll @assert throws TypeError new CanvasFilter({\-
+        filter: 'dropShadow', \-
+        : \-
+        });
+    @unroll @assert throws TypeError new CanvasFilter({\-
+        filter: 'dropShadow', \-
+        : \-
+        });
+    @unroll @assert throws TypeError new CanvasFilter({\-
+        filter: 'dropShadow', \-
+        : \-
+        <'test' | 'rgba(NaN, 3, 2, 1)' | 10 | undefined | null | NaN>});
+
+- name: 2d.filter.canvasFilterObject.turbulence.inputTypes.tentative
+  desc: Test exceptions on CanvasFilter() turbulence object
+  code: |
+    const errorTestCases = [
+      {baseFrequency: {}},
+      {baseFrequency: -1},
+      {baseFrequency: [0, -1]},
+      {baseFrequency: NaN},
+      {baseFrequency: Infinity},
+      {baseFrequency: undefined},
+      {baseFrequency: -Infinity},
+      {baseFrequency: 'test'},
+
+      {numOctaves: {}},
+      {numOctaves: -1},
+      {numOctaves: NaN},
+      {numOctaves: Infinity},
+      {numOctaves: undefined},
+      {numOctaves: -Infinity},
+      {numOctaves: [1, 1]},
+      {numOctaves: 'test'},
+
+      {seed: {}},
+      {seed: NaN},
+      {seed: Infinity},
+      {seed: undefined},
+      {seed: -Infinity},
+      {seed: [1, 1]},
+      {seed: 'test'},
+
+      {stitchTiles: {}},
+      {stitchTiles: NaN},
+      {stitchTiles: Infinity},
+      {stitchTiles: undefined},
+      {stitchTiles: -Infinity},
+      {stitchTiles: [1, 1]},
+      {stitchTiles: 'test'},
+      {stitchTiles: null},
+      {stitchTiles: []},
+      {stitchTiles: [10]},
+      {stitchTiles: 30},
+      {stitchTiles: false},
+      {stitchTiles: true},
+      {stitchTiles: '10'},
+      {stitchTiles: -1},
+
+      {type: {}},
+      {type: NaN},
+      {type: Infinity},
+      {type: undefined},
+      {type: -Infinity},
+      {type: [1, 1]},
+      {type: 'test'},
+      {type: null},
+      {type: []},
+      {type: [10]},
+      {type: 30},
+      {type: false},
+      {type: true},
+      {type: '10'},
+      {type: -1},
+    ]
+
+    // null and [] = 0 when parsed as number
+    const workingTestCases = [
+      {baseFrequency: null},
+      {baseFrequency: []},
+      {baseFrequency: [10]},
+      {baseFrequency: [10, 3]},
+      {baseFrequency: 30},
+      {baseFrequency: false},
+      {baseFrequency: true},
+      {baseFrequency: '10'},
+
+      {numOctaves: null},
+      {numOctaves: []},
+      {numOctaves: [10]},
+      {numOctaves: 30},
+      {numOctaves: false},
+      {numOctaves: true},
+      {numOctaves: '10'},
+
+      {seed: null},
+      {seed: []},
+      {seed: [10]},
+      {seed: 30},
+      {seed: false},
+      {seed: true},
+      {seed: '10'},
+      {seed: -1},
+
+      {stitchTiles: 'stitch'},
+      {stitchTiles: 'noStitch'},
+
+      {type: 'fractalNoise'},
+      {type: 'turbulence'},
+    ]
+
+    for (testCase of errorTestCases) {
+      const filterOptions = {...{filter: 'turbulence'}, ...testCase};
+      @assert throws TypeError new CanvasFilter(filterOptions);
+    }
+
+    for (testCase of workingTestCases) {
+      const filterOptions = {...{filter: 'turbulence'}, ...testCase};
+      @assert new CanvasFilter(filterOptions) != null;
+    }
diff --git a/testing/web-platform/tests/html/canvas/tools/yaml-new/layers.yaml b/testing/web-platform/tests/html/canvas/tools/yaml-new/layers.yaml
new file mode 100644
index 0000000000..fe1902c61b
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/tools/yaml-new/layers.yaml
@@ -0,0 +1,496 @@
+- name: 2d.layer.global-states
+  desc: Checks that layers correctly use global render states.
+  size: 200, 200
+  code: |
+    ctx.fillStyle = 'rgba(0, 0, 255, 1)';
+
+    var circle = new Path2D();
+    circle.arc(90, 90, 45, 0, 2 * Math.PI);
+    ctx.fill(circle);
+
+    %(render-states)s
+
+    ctx.beginLayer();
+
+    // Enable compositing in the layer to validate that draw calls in the layer
+    // won't individually composite with the background.
+    ctx.globalCompositeOperation = 'screen';
+
+    ctx.fillStyle = 'rgba(225, 0, 0, 1)';
+    ctx.fillRect(50, 50, 75, 50);
+    ctx.fillStyle = 'rgba(0, 255, 0, 1)';
+    ctx.fillRect(70, 70, 75, 50);
+
+    ctx.endLayer();
+  reference: |
+    ctx.fillStyle = 'rgba(0, 0, 255, 1)';
+
+    var circle = new Path2D();
+    circle.arc(90, 90, 45, 0, 2 * Math.PI);
+    ctx.fill(circle);
+
+    %(render-states)s
+
+    canvas2 = document.createElement("canvas");
+    ctx2 = canvas2.getContext("2d");
+
+    ctx2.globalCompositeOperation = 'screen';
+    ctx2.fillStyle = 'rgba(225, 0, 0, 1)';
+    ctx2.fillRect(50, 50, 75, 50);
+    ctx2.fillStyle = 'rgba(0, 255, 0, 1)';
+    ctx2.fillRect(70, 70, 75, 50);
+
+    ctx.drawImage(canvas2, 0, 0);
+  variants: &global-state-variants
+    no-global-states:
+      render-states: // No global states.
+    alpha:
+      render-states: ctx.globalAlpha = 0.6;
+    blending:
+      render-states: ctx.globalCompositeOperation = 'multiply';
+    composite:
+      render-states: ctx.globalCompositeOperation = 'source-in';
+    shadow:
+      render-states: |-
+        ctx.shadowOffsetX = -10;
+        ctx.shadowOffsetY = 10;
+        ctx.shadowColor = 'rgba(255, 165, 0, 0.5)';
+    alpha.blending:
+      render-states: |-
+        ctx.globalAlpha = 0.6;
+        ctx.globalCompositeOperation = 'multiply';
+    alpha.composite:
+      render-states: |-
+        ctx.globalAlpha = 0.6;
+        ctx.globalCompositeOperation = 'source-in';
+    alpha.shadow:
+      render-states: |-
+        ctx.globalAlpha = 0.5;
+        ctx.shadowOffsetX = -10;
+        ctx.shadowOffsetY = 10;
+        ctx.shadowColor = 'rgba(255, 165, 0, 0.5)';
+    alpha.blending.shadow:
+      render-states: |-
+        ctx.globalAlpha = 0.6;
+        ctx.globalCompositeOperation = 'multiply';
+        ctx.shadowOffsetX = -10;
+        ctx.shadowOffsetY = 10;
+        ctx.shadowColor = 'rgba(255, 165, 0, 0.5)';
+    alpha.composite.shadow:
+      render-states: |-
+        ctx.globalAlpha = 0.6;
+        ctx.globalCompositeOperation = 'source-in';
+        ctx.shadowOffsetX = -10;
+        ctx.shadowOffsetY = 10;
+        ctx.shadowColor = 'rgba(255, 165, 0, 0.5)';
+    blending.shadow:
+      render-states: |-
+        ctx.globalCompositeOperation = 'multiply';
+        ctx.shadowOffsetX = -10;
+        ctx.shadowOffsetY = 10;
+        ctx.shadowColor = 'rgba(255, 165, 0, 0.5)';
+    composite.shadow:
+      render-states: |-
+        ctx.globalCompositeOperation = 'source-in';
+        ctx.shadowOffsetX = -10;
+        ctx.shadowOffsetY = 10;
+        ctx.shadowColor = 'rgba(255, 165, 0, 0.5)';
+
+
+- name: 2d.layer.global-states.filter
+  desc: Checks that layers with filters correctly use global render states.
+  size: 200, 200
+  code: |
+    ctx.fillStyle = 'rgba(0, 0, 255, 1)';
+
+    var circle = new Path2D();
+    circle.arc(90, 90, 45, 0, 2 * Math.PI);
+    ctx.fill(circle);
+
+    %(render-states)s
+
+    ctx.beginLayer([
+        {filter: 'colorMatrix', values: [0.393, 0.769, 0.189, 0, 0,
+                                         0.349, 0.686, 0.168, 0, 0,
+                                         0.272, 0.534, 0.131, 0, 0,
+                                         0, 0, 0, 1, 0]},
+        {filter: 'componentTransfer',
+            funcA: {type: "table", tableValues: [0, 0.7]}},
+        {filter: 'dropShadow', dx: 5, dy: 5, floodColor: '#81e'}]);
+
+    ctx.fillStyle = 'rgba(200, 0, 0, 1)';
+    ctx.fillRect(50, 50, 75, 50);
+    ctx.fillStyle = 'rgba(0, 200, 0, 1)';
+    ctx.fillRect(70, 70, 75, 50);
+
+    ctx.endLayer();
+  reference: |
+    const svg = `
+      
+        
+          
+          
+            
+          
+          
+        
+        
+          
+          
+        
+      `;
+
+    const img = new Image();
+    img.width = 200;
+    img.height = 200;
+    img.onload = () => {
+      ctx.fillStyle = 'rgba(0, 0, 255, 1)';
+
+      var circle = new Path2D();
+      circle.arc(90, 90, 45, 0, 2 * Math.PI);
+      ctx.fill(circle);
+
+      %(render-states)s
+
+      ctx.drawImage(img, 0, 0);
+    };
+    img.src = 'data:image/svg+xml;base64,' + btoa(svg);
+  variants: *global-state-variants
+
+
+- name: 2d.layer.nested
+  desc: Tests nested canvas layers.
+  size: 200, 200
+  code: |
+    var circle = new Path2D();
+    circle.arc(90, 90, 40, 0, 2 * Math.PI);
+    ctx.fill(circle);
+
+    ctx.globalCompositeOperation = 'source-in';
+
+    ctx.beginLayer();
+
+    ctx.fillStyle = 'rgba(0, 0, 255, 1)';
+    ctx.fillRect(60, 60, 75, 50);
+
+    ctx.globalAlpha = 0.5;
+
+    ctx.beginLayer();
+
+    ctx.fillStyle = 'rgba(225, 0, 0, 1)';
+    ctx.fillRect(50, 50, 75, 50);
+    ctx.fillStyle = 'rgba(0, 255, 0, 1)';
+    ctx.fillRect(70, 70, 75, 50);
+
+    ctx.endLayer();
+    ctx.endLayer();
+  reference: |
+    var circle = new Path2D();
+    circle.arc(90, 90, 40, 0, 2 * Math.PI);
+    ctx.fill(circle);
+
+    ctx.globalCompositeOperation = 'source-in';
+
+    canvas2 = document.createElement("canvas");
+    ctx2 = canvas2.getContext("2d");
+
+    ctx2.fillStyle = 'rgba(0, 0, 255, 1)';
+    ctx2.fillRect(60, 60, 75, 50);
+
+    ctx2.globalAlpha = 0.5;
+
+    canvas3 = document.createElement("canvas");
+    ctx3 = canvas3.getContext("2d");
+
+    ctx3.fillStyle = 'rgba(225, 0, 0, 1)';
+    ctx3.fillRect(50, 50, 75, 50);
+    ctx3.fillStyle = 'rgba(0, 255, 0, 1)';
+    ctx3.fillRect(70, 70, 75, 50);
+
+    ctx2.drawImage(canvas3, 0, 0);
+    ctx.drawImage(canvas2, 0, 0);
+
+
+- name: 2d.layer.restore-style
+  desc: Test that ensure layers restores style values upon endLayer.
+  size: 200, 200
+  fuzzy: maxDifference=0-1; totalPixels=0-950
+  code: |
+    ctx.fillStyle = 'rgba(0,0,255,1)';
+    ctx.fillRect(50, 50, 75, 50);
+    ctx.globalAlpha = 0.5;
+
+    ctx.beginLayer();
+    ctx.fillStyle = 'rgba(225, 0, 0, 1)';
+    ctx.fillRect(60, 60, 75, 50);
+    ctx.endLayer();
+
+    ctx.fillRect(70, 70, 75, 50);
+  reference: |
+    ctx.fillStyle = 'rgba(0, 0, 255, 1)';
+    ctx.fillRect(50, 50, 75, 50);
+    ctx.globalAlpha = 0.5;
+
+    canvas2 = document.createElement("canvas");
+    ctx2 = canvas2.getContext("2d");
+    ctx2.fillStyle = 'rgba(225, 0, 0, 1)';
+    ctx2.fillRect(60, 60, 75, 50);
+    ctx.drawImage(canvas2, 0, 0);
+
+    ctx.fillRect(70, 70, 75, 50);
+
+
+- name: 2d.layer.unclosed
+  desc: Check that layers are rendered even if not closed.
+  size: 200, 200
+  code: |
+    ctx.fillStyle = 'purple';
+    ctx.fillRect(60, 60, 75, 50);
+    ctx.globalAlpha = 0.5;
+
+    ctx.beginLayer({filter: 'dropShadow', dx: -2, dy: 2});
+    ctx.fillRect(40, 40, 75, 50);
+    ctx.fillStyle = 'grey';
+    ctx.fillRect(50, 50, 75, 50);
+  reference: |
+    ctx.fillStyle = 'purple';
+    ctx.fillRect(60, 60, 75, 50);
+    ctx.globalAlpha = 0.5;
+
+    ctx.beginLayer({filter: 'dropShadow', dx: -2, dy: 2});
+    ctx.fillStyle = 'purple';
+    ctx.fillRect(40, 40, 75, 50);
+    ctx.fillStyle = 'grey';
+    ctx.fillRect(50, 50, 75, 50);
+    ctx.endLayer();
+
+
+- name: 2d.layer.render-opportunities
+  desc: Check that layers state stack is flushed and rebuilt on frame renders.
+  size: 200, 200
+  code: |
+    ctx.fillStyle = 'purple';
+    ctx.fillRect(60, 60, 75, 50);
+    ctx.globalAlpha = 0.5;
+
+    ctx.beginLayer({filter: 'dropShadow', dx: -2, dy: 2});
+    ctx.fillRect(40, 40, 75, 50);
+    ctx.fillStyle = 'grey';
+    ctx.fillRect(50, 50, 75, 50);
+
+    // Force a flush and restoration of the state stack:
+    %(flush_canvas)s
+
+    ctx.fillRect(70, 70, 75, 50);
+    ctx.fillStyle = 'orange';
+    ctx.fillRect(80, 80, 75, 50);
+    ctx.endLayer();
+
+    ctx.fillRect(80, 40, 75, 50);
+  reference: |
+    ctx.fillStyle = 'purple';
+    ctx.fillRect(60, 60, 75, 50);
+    ctx.globalAlpha = 0.5;
+
+    ctx.beginLayer({filter: 'dropShadow', dx: -2, dy: 2});
+    ctx.fillStyle = 'purple';
+    ctx.fillRect(40, 40, 75, 50);
+    ctx.fillStyle = 'grey';
+    ctx.fillRect(50, 50, 75, 50);
+    ctx.endLayer();
+
+    ctx.beginLayer({filter: 'dropShadow', dx: -2, dy: 2});
+    ctx.fillStyle = 'grey';
+    ctx.fillRect(70, 70, 75, 50);
+    ctx.fillStyle = 'orange';
+    ctx.fillRect(80, 80, 75, 50);
+    ctx.endLayer();
+
+    ctx.fillRect(80, 40, 75, 50);
+  variants:
+    convertToBlob:
+      test_type: "promise"
+      canvasType: ['OffscreenCanvas']
+      flush_canvas: |-
+        await canvas.convertToBlob();
+    createImageBitmap:
+      flush_canvas: createImageBitmap(canvas);
+    drawImage:
+      flush_canvas: |-
+        const canvas2 = new OffscreenCanvas(200, 200);
+        const ctx2 = canvas2.getContext('2d');
+        ctx2.drawImage(canvas, 0, 0);
+    getImageData:
+      flush_canvas: ctx.getImageData(0, 0, 200, 200);
+    requestAnimationFrame:
+      canvasType: ['HTMLCanvas']
+      test_type: "promise"
+      flush_canvas: |-
+        await new Promise(resolve => requestAnimationFrame(resolve));
+    putImageData:
+      flush_canvas: |-
+        const canvas2 = new OffscreenCanvas(200, 200);
+        const ctx2 = canvas2.getContext('2d');
+        ctx.putImageData(ctx2.getImageData(0, 0, 1, 1), 0, 0);
+    toBlob:
+      test_type: "promise"
+      canvasType: ['HTMLCanvas']
+      flush_canvas: |-
+        await new Promise(resolve => canvas.toBlob(resolve));
+    toDataURL:
+      canvasType: ['HTMLCanvas']
+      flush_canvas: canvas.toDataURL();
+
+
+- name: 2d.layer.render-opportunities.transferToImageBitmap
+  desc: Checks that transferToImageBitmap flushes and rebuilds the state stack.
+  size: 200, 200
+  canvasType: ['OffscreenCanvas']
+  code: |
+    ctx.fillStyle = 'purple';
+    ctx.fillRect(60, 60, 75, 50);
+    ctx.globalAlpha = 0.5;
+
+    ctx.beginLayer({filter: 'dropShadow', dx: -2, dy: 2});
+    ctx.fillRect(40, 40, 75, 50);
+    ctx.fillStyle = 'grey';
+    ctx.fillRect(50, 50, 75, 50);
+
+    // Force a flush and restoration of the state stack.
+    // `transferToImageBitmap` clears the frame but preserves render states.
+    canvas.transferToImageBitmap();
+
+    ctx.fillRect(70, 70, 75, 50);
+    ctx.fillStyle = 'orange';
+    ctx.fillRect(80, 80, 75, 50);
+    ctx.endLayer();
+
+    ctx.fillRect(80, 40, 75, 50);
+  reference: |
+    ctx.fillStyle = 'purple';
+    ctx.globalAlpha = 0.5;
+
+    ctx.beginLayer({filter: 'dropShadow', dx: -2, dy: 2});
+    ctx.fillStyle = 'grey';
+    ctx.fillRect(70, 70, 75, 50);
+    ctx.fillStyle = 'orange';
+    ctx.fillRect(80, 80, 75, 50);
+    ctx.endLayer();
+
+    ctx.fillRect(80, 40, 75, 50);
+
+
+- name: 2d.layer.several-complex
+  desc: >-
+    Test to ensure beginlayer works for filter, alpha and shadow, even with
+    consecutive layers.
+  size: 500, 500
+  fuzzy: maxDifference=0-3; totalPixels=0-6318
+  code: |
+    ctx.fillStyle = 'rgba(0, 0, 255, 1)';
+    ctx.fillRect(50, 50, 95, 70);
+
+    ctx.globalAlpha = 0.5;
+    ctx.shadowOffsetX = -10;
+    ctx.shadowOffsetY = 10;
+    ctx.shadowColor = 'orange';
+
+
+    for (let i = 0; i < 5; i++) {
+      ctx.beginLayer();
+
+      ctx.fillStyle = 'rgba(225, 0, 0, 1)';
+      ctx.fillRect(60 + i, 40 + i, 75, 50);
+      ctx.fillStyle = 'rgba(0, 255, 0, 1)';
+      ctx.fillRect(80 + i, 60 + i, 75, 50);
+
+      ctx.endLayer();
+    }
+  reference: |
+    ctx.fillStyle = 'rgba(0, 0, 255, 1)';
+    ctx.fillRect(50, 50, 95, 70);
+
+    ctx.globalAlpha = 0.5;
+    ctx.shadowOffsetX = -10;
+    ctx.shadowOffsetY = 10;
+    ctx.shadowColor = 'orange';
+
+    var canvas2 = [5];
+    var ctx2 = [5];
+
+    for (let i = 0; i < 5; i++) {
+      canvas2[i] = document.createElement("canvas");
+      ctx2[i] = canvas2[i].getContext("2d");
+      ctx2[i].fillStyle = 'rgba(225, 0, 0, 1)';
+      ctx2[i].fillRect(60, 40, 75, 50);
+      ctx2[i].fillStyle = 'rgba(0, 255, 0, 1)';
+      ctx2[i].fillRect(80, 60, 75, 50);
+
+      ctx.drawImage(canvas2[i], i, i);
+    }
+
+
+- name: 2d.layer.endlayer.unmatched
+  desc: >-
+    A test to make sure an unmatched endLayer is a no-op and has no effect on
+    the code following it.
+  size: 200, 200
+  code: |
+    ctx.fillStyle = 'rgba(0, 0, 255, 1)';
+    ctx.fillRect(60, 60, 75, 50);
+
+    ctx.globalAlpha = 0.5;
+
+    // This endlayer call should no-op.
+    ctx.endLayer();
+
+    ctx.beginLayer();
+    ctx.fillStyle = 'rgba(225, 0, 0, 1)';
+    ctx.fillRect(50, 50, 75, 50);
+    ctx.fillStyle = 'rgba(0, 255, 0, 1)';
+    ctx.fillRect(70, 70, 75, 50);
+    ctx.endLayer();
+  reference: |
+    ctx.fillStyle = 'rgba(0, 0, 255, 1)';
+    ctx.fillRect(60, 60, 75, 50);
+
+    ctx.globalAlpha = 0.5;
+
+    ctx.beginLayer();
+    ctx.fillStyle = 'rgba(225, 0, 0, 1)';
+    ctx.fillRect(50, 50, 75, 50);
+    ctx.fillStyle = 'rgba(0, 255, 0, 1)';
+    ctx.fillRect(70, 70, 75, 50);
+    ctx.endLayer();
+
+
+- name: 2d.layer.endlayer.alone
+  desc: A test to make sure a single endLayer with no beginLayer is a no-op.
+  size: 200, 200
+  code: |
+    ctx.fillStyle = 'rgba(0, 0, 255, 1)';
+    ctx.fillRect(60, 60, 75, 50);
+    ctx.globalAlpha = 0.5;
+
+    ctx.fillStyle = 'rgba(225, 0, 0, 1)';
+    ctx.fillRect(50, 50, 75, 50);
+    ctx.fillStyle = 'rgba(0, 255, 0, 1)';
+    ctx.fillRect(70, 70, 75, 50);
+
+    ctx.endLayer();
+  reference: |
+    ctx.fillStyle = 'rgba(0, 0, 255, 1)';
+    ctx.fillRect(60, 60, 75, 50);
+    ctx.globalAlpha = 0.5;
+
+    ctx.fillStyle = 'rgba(225, 0, 0, 1)';
+    ctx.fillRect(50, 50, 75, 50);
+    ctx.fillStyle = 'rgba(0, 255, 0, 1)';
+    ctx.fillRect(70, 70, 75, 50);
diff --git a/testing/web-platform/tests/html/canvas/tools/yaml-new/line-styles.yaml b/testing/web-platform/tests/html/canvas/tools/yaml-new/line-styles.yaml
new file mode 100644
index 0000000000..604f4f3659
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/tools/yaml-new/line-styles.yaml
@@ -0,0 +1,939 @@
+- name: 2d.line.defaults
+  code: |
+    @assert ctx.lineWidth === 1;
+    @assert ctx.lineCap === 'butt';
+    @assert ctx.lineJoin === 'miter';
+    @assert ctx.miterLimit === 10;
+
+- name: 2d.line.width.basic
+  desc: lineWidth determines the width of line strokes
+  code: |
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 100, 50);
+
+    ctx.lineWidth = 20;
+    // Draw a green line over a red box, to check the line is not too small
+    ctx.fillStyle = '#f00';
+    ctx.strokeStyle = '#0f0';
+    ctx.fillRect(15, 15, 20, 20);
+    ctx.beginPath();
+    ctx.moveTo(25, 15);
+    ctx.lineTo(25, 35);
+    ctx.stroke();
+
+    // Draw a green box over a red line, to check the line is not too large
+    ctx.fillStyle = '#0f0';
+    ctx.strokeStyle = '#f00';
+    ctx.beginPath();
+    ctx.moveTo(75, 15);
+    ctx.lineTo(75, 35);
+    ctx.stroke();
+    ctx.fillRect(65, 15, 20, 20);
+
+    @assert pixel 14,25 == 0,255,0,255;
+    @assert pixel 15,25 == 0,255,0,255;
+    @assert pixel 16,25 == 0,255,0,255;
+    @assert pixel 25,25 == 0,255,0,255;
+    @assert pixel 34,25 == 0,255,0,255;
+    @assert pixel 35,25 == 0,255,0,255;
+    @assert pixel 36,25 == 0,255,0,255;
+
+    @assert pixel 64,25 == 0,255,0,255;
+    @assert pixel 65,25 == 0,255,0,255;
+    @assert pixel 66,25 == 0,255,0,255;
+    @assert pixel 75,25 == 0,255,0,255;
+    @assert pixel 84,25 == 0,255,0,255;
+    @assert pixel 85,25 == 0,255,0,255;
+    @assert pixel 86,25 == 0,255,0,255;
+  expected: green
+
+- name: 2d.line.width.transformed
+  desc: Line stroke widths are affected by scale transformations
+  code: |
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 100, 50);
+
+    ctx.lineWidth = 4;
+    // Draw a green line over a red box, to check the line is not too small
+    ctx.fillStyle = '#f00';
+    ctx.strokeStyle = '#0f0';
+    ctx.fillRect(15, 15, 20, 20);
+    ctx.save();
+     ctx.scale(5, 1);
+     ctx.beginPath();
+     ctx.moveTo(5, 15);
+     ctx.lineTo(5, 35);
+     ctx.stroke();
+    ctx.restore();
+
+    // Draw a green box over a red line, to check the line is not too large
+    ctx.fillStyle = '#0f0';
+    ctx.strokeStyle = '#f00';
+    ctx.save();
+     ctx.scale(-5, 1);
+     ctx.beginPath();
+     ctx.moveTo(-15, 15);
+     ctx.lineTo(-15, 35);
+     ctx.stroke();
+    ctx.restore();
+    ctx.fillRect(65, 15, 20, 20);
+
+    @assert pixel 14,25 == 0,255,0,255;
+    @assert pixel 15,25 == 0,255,0,255;
+    @assert pixel 16,25 == 0,255,0,255;
+    @assert pixel 25,25 == 0,255,0,255;
+    @assert pixel 34,25 == 0,255,0,255;
+    @assert pixel 35,25 == 0,255,0,255;
+    @assert pixel 36,25 == 0,255,0,255;
+
+    @assert pixel 64,25 == 0,255,0,255;
+    @assert pixel 65,25 == 0,255,0,255;
+    @assert pixel 66,25 == 0,255,0,255;
+    @assert pixel 75,25 == 0,255,0,255;
+    @assert pixel 84,25 == 0,255,0,255;
+    @assert pixel 85,25 == 0,255,0,255;
+    @assert pixel 86,25 == 0,255,0,255;
+  expected: green
+
+- name: 2d.line.width.scaledefault
+  desc: Default lineWidth strokes are affected by scale transformations
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+
+    ctx.scale(50, 50);
+    ctx.strokeStyle = '#0f0';
+    ctx.moveTo(0, 0.5);
+    ctx.lineTo(2, 0.5);
+    ctx.stroke();
+
+    @assert pixel 25,25 == 0,255,0,255;
+    @assert pixel 50,25 == 0,255,0,255;
+    @assert pixel 75,25 == 0,255,0,255;
+    @assert pixel 50,5 == 0,255,0,255;
+    @assert pixel 50,45 == 0,255,0,255;
+  expected: green
+
+- name: 2d.line.width.valid
+  desc: Setting lineWidth to valid values works
+  code: |
+    ctx.lineWidth = 1.5;
+    @assert ctx.lineWidth === 1.5;
+
+    ctx.lineWidth = "1e1";
+    @assert ctx.lineWidth === 10;
+
+    ctx.lineWidth = 1/1024;
+    @assert ctx.lineWidth === 1/1024;
+
+    ctx.lineWidth = 1000;
+    @assert ctx.lineWidth === 1000;
+
+- name: 2d.line.width.invalid
+  desc: Setting lineWidth to invalid values is ignored
+  code: |
+    ctx.lineWidth = 1.5;
+    @assert ctx.lineWidth === 1.5;
+
+    ctx.lineWidth = 1.5;
+    ctx.lineWidth = 0;
+    @assert ctx.lineWidth === 1.5;
+
+    ctx.lineWidth = 1.5;
+    ctx.lineWidth = -1;
+    @assert ctx.lineWidth === 1.5;
+
+    ctx.lineWidth = 1.5;
+    ctx.lineWidth = Infinity;
+    @assert ctx.lineWidth === 1.5;
+
+    ctx.lineWidth = 1.5;
+    ctx.lineWidth = -Infinity;
+    @assert ctx.lineWidth === 1.5;
+
+    ctx.lineWidth = 1.5;
+    ctx.lineWidth = NaN;
+    @assert ctx.lineWidth === 1.5;
+
+    ctx.lineWidth = 1.5;
+    ctx.lineWidth = 'string';
+    @assert ctx.lineWidth === 1.5;
+
+    ctx.lineWidth = 1.5;
+    ctx.lineWidth = true;
+    @assert ctx.lineWidth === 1;
+
+    ctx.lineWidth = 1.5;
+    ctx.lineWidth = false;
+    @assert ctx.lineWidth === 1.5;
+
+- name: 2d.line.cap.butt
+  desc: lineCap 'butt' is rendered correctly
+  code: |
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 100, 50);
+
+    ctx.lineCap = 'butt';
+    ctx.lineWidth = 20;
+
+    ctx.fillStyle = '#f00';
+    ctx.strokeStyle = '#0f0';
+    ctx.fillRect(15, 15, 20, 20);
+    ctx.beginPath();
+    ctx.moveTo(25, 15);
+    ctx.lineTo(25, 35);
+    ctx.stroke();
+
+    ctx.fillStyle = '#0f0';
+    ctx.strokeStyle = '#f00';
+    ctx.beginPath();
+    ctx.moveTo(75, 15);
+    ctx.lineTo(75, 35);
+    ctx.stroke();
+    ctx.fillRect(65, 15, 20, 20);
+
+    @assert pixel 25,14 == 0,255,0,255;
+    @assert pixel 25,15 == 0,255,0,255;
+    @assert pixel 25,16 == 0,255,0,255;
+    @assert pixel 25,34 == 0,255,0,255;
+    @assert pixel 25,35 == 0,255,0,255;
+    @assert pixel 25,36 == 0,255,0,255;
+
+    @assert pixel 75,14 == 0,255,0,255;
+    @assert pixel 75,15 == 0,255,0,255;
+    @assert pixel 75,16 == 0,255,0,255;
+    @assert pixel 75,34 == 0,255,0,255;
+    @assert pixel 75,35 == 0,255,0,255;
+    @assert pixel 75,36 == 0,255,0,255;
+  expected: green
+
+- name: 2d.line.cap.round
+  desc: lineCap 'round' is rendered correctly
+  code: |
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 100, 50);
+
+    var tol = 1; // tolerance to avoid antialiasing artifacts
+
+    ctx.lineCap = 'round';
+    ctx.lineWidth = 20;
+
+
+    ctx.fillStyle = '#f00';
+    ctx.strokeStyle = '#0f0';
+
+    ctx.beginPath();
+    ctx.moveTo(35-tol, 15);
+    ctx.arc(25, 15, 10-tol, 0, Math.PI, true);
+    ctx.arc(25, 35, 10-tol, Math.PI, 0, true);
+    ctx.fill();
+
+    ctx.beginPath();
+    ctx.moveTo(25, 15);
+    ctx.lineTo(25, 35);
+    ctx.stroke();
+
+
+    ctx.fillStyle = '#0f0';
+    ctx.strokeStyle = '#f00';
+
+    ctx.beginPath();
+    ctx.moveTo(75, 15);
+    ctx.lineTo(75, 35);
+    ctx.stroke();
+
+    ctx.beginPath();
+    ctx.moveTo(85+tol, 15);
+    ctx.arc(75, 15, 10+tol, 0, Math.PI, true);
+    ctx.arc(75, 35, 10+tol, Math.PI, 0, true);
+    ctx.fill();
+
+    @assert pixel 17,6 == 0,255,0,255;
+    @assert pixel 25,6 == 0,255,0,255;
+    @assert pixel 32,6 == 0,255,0,255;
+    @assert pixel 17,43 == 0,255,0,255;
+    @assert pixel 25,43 == 0,255,0,255;
+    @assert pixel 32,43 == 0,255,0,255;
+
+    @assert pixel 67,6 == 0,255,0,255;
+    @assert pixel 75,6 == 0,255,0,255;
+    @assert pixel 82,6 == 0,255,0,255;
+    @assert pixel 67,43 == 0,255,0,255;
+    @assert pixel 75,43 == 0,255,0,255;
+    @assert pixel 82,43 == 0,255,0,255;
+  expected: green
+
+- name: 2d.line.cap.square
+  desc: lineCap 'square' is rendered correctly
+  code: |
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 100, 50);
+
+    ctx.lineCap = 'square';
+    ctx.lineWidth = 20;
+
+    ctx.fillStyle = '#f00';
+    ctx.strokeStyle = '#0f0';
+    ctx.fillRect(15, 5, 20, 40);
+    ctx.beginPath();
+    ctx.moveTo(25, 15);
+    ctx.lineTo(25, 35);
+    ctx.stroke();
+
+    ctx.fillStyle = '#0f0';
+    ctx.strokeStyle = '#f00';
+    ctx.beginPath();
+    ctx.moveTo(75, 15);
+    ctx.lineTo(75, 35);
+    ctx.stroke();
+    ctx.fillRect(65, 5, 20, 40);
+
+    @assert pixel 25,4 == 0,255,0,255;
+    @assert pixel 25,5 == 0,255,0,255;
+    @assert pixel 25,6 == 0,255,0,255;
+    @assert pixel 25,44 == 0,255,0,255;
+    @assert pixel 25,45 == 0,255,0,255;
+    @assert pixel 25,46 == 0,255,0,255;
+
+    @assert pixel 75,4 == 0,255,0,255;
+    @assert pixel 75,5 == 0,255,0,255;
+    @assert pixel 75,6 == 0,255,0,255;
+    @assert pixel 75,44 == 0,255,0,255;
+    @assert pixel 75,45 == 0,255,0,255;
+    @assert pixel 75,46 == 0,255,0,255;
+  expected: green
+
+- name: 2d.line.cap.open
+  desc: Line caps are drawn at the corners of an unclosed rectangle
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.strokeStyle = '#0f0';
+    ctx.fillRect(0, 0, 100, 50);
+
+    ctx.lineJoin = 'bevel';
+    ctx.lineCap = 'square';
+    ctx.lineWidth = 400;
+
+    ctx.beginPath();
+    ctx.moveTo(200, 200);
+    ctx.lineTo(200, 1000);
+    ctx.lineTo(1000, 1000);
+    ctx.lineTo(1000, 200);
+    ctx.lineTo(200, 200);
+    ctx.stroke();
+
+    @assert pixel 1,1 == 0,255,0,255;
+    @assert pixel 48,1 == 0,255,0,255;
+    @assert pixel 48,48 == 0,255,0,255;
+    @assert pixel 1,48 == 0,255,0,255;
+  expected: green
+
+- name: 2d.line.cap.closed
+  desc: Line caps are not drawn at the corners of an unclosed rectangle
+  code: |
+    ctx.fillStyle = '#0f0';
+    ctx.strokeStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+
+    ctx.lineJoin = 'bevel';
+    ctx.lineCap = 'square';
+    ctx.lineWidth = 400;
+
+    ctx.beginPath();
+    ctx.moveTo(200, 200);
+    ctx.lineTo(200, 1000);
+    ctx.lineTo(1000, 1000);
+    ctx.lineTo(1000, 200);
+    ctx.closePath();
+    ctx.stroke();
+
+    @assert pixel 1,1 == 0,255,0,255;
+    @assert pixel 48,1 == 0,255,0,255;
+    @assert pixel 48,48 == 0,255,0,255;
+    @assert pixel 1,48 == 0,255,0,255;
+  expected: green
+
+- name: 2d.line.cap.valid
+  desc: Setting lineCap to valid values works
+  code: |
+    ctx.lineCap = 'butt'
+    @assert ctx.lineCap === 'butt';
+
+    ctx.lineCap = 'round';
+    @assert ctx.lineCap === 'round';
+
+    ctx.lineCap = 'square';
+    @assert ctx.lineCap === 'square';
+
+- name: 2d.line.cap.invalid
+  desc: Setting lineCap to invalid values is ignored
+  code: |
+    ctx.lineCap = 'butt'
+    @assert ctx.lineCap === 'butt';
+
+    ctx.lineCap = 'butt';
+    ctx.lineCap = 'invalid';
+    @assert ctx.lineCap === 'butt';
+
+    ctx.lineCap = 'butt';
+    ctx.lineCap = 'ROUND';
+    @assert ctx.lineCap === 'butt';
+
+    ctx.lineCap = 'butt';
+    ctx.lineCap = 'round\0';
+    @assert ctx.lineCap === 'butt';
+
+    ctx.lineCap = 'butt';
+    ctx.lineCap = 'round ';
+    @assert ctx.lineCap === 'butt';
+
+    ctx.lineCap = 'butt';
+    ctx.lineCap = "";
+    @assert ctx.lineCap === 'butt';
+
+    ctx.lineCap = 'butt';
+    ctx.lineCap = 'bevel';
+    @assert ctx.lineCap === 'butt';
+
+- name: 2d.line.join.bevel
+  desc: lineJoin 'bevel' is rendered correctly
+  code: |
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 100, 50);
+
+    var tol = 1; // tolerance to avoid antialiasing artifacts
+
+    ctx.lineJoin = 'bevel';
+    ctx.lineWidth = 20;
+
+    ctx.fillStyle = '#f00';
+    ctx.strokeStyle = '#0f0';
+
+    ctx.fillRect(10, 10, 20, 20);
+    ctx.fillRect(20, 20, 20, 20);
+    ctx.beginPath();
+    ctx.moveTo(30, 20);
+    ctx.lineTo(40-tol, 20);
+    ctx.lineTo(30, 10+tol);
+    ctx.fill();
+
+    ctx.beginPath();
+    ctx.moveTo(10, 20);
+    ctx.lineTo(30, 20);
+    ctx.lineTo(30, 40);
+    ctx.stroke();
+
+
+    ctx.fillStyle = '#0f0';
+    ctx.strokeStyle = '#f00';
+
+    ctx.beginPath();
+    ctx.moveTo(60, 20);
+    ctx.lineTo(80, 20);
+    ctx.lineTo(80, 40);
+    ctx.stroke();
+
+    ctx.fillRect(60, 10, 20, 20);
+    ctx.fillRect(70, 20, 20, 20);
+    ctx.beginPath();
+    ctx.moveTo(80, 20);
+    ctx.lineTo(90+tol, 20);
+    ctx.lineTo(80, 10-tol);
+    ctx.fill();
+
+    @assert pixel 34,16 == 0,255,0,255;
+    @assert pixel 34,15 == 0,255,0,255;
+    @assert pixel 35,15 == 0,255,0,255;
+    @assert pixel 36,15 == 0,255,0,255;
+    @assert pixel 36,14 == 0,255,0,255;
+
+    @assert pixel 84,16 == 0,255,0,255;
+    @assert pixel 84,15 == 0,255,0,255;
+    @assert pixel 85,15 == 0,255,0,255;
+    @assert pixel 86,15 == 0,255,0,255;
+    @assert pixel 86,14 == 0,255,0,255;
+  expected: green
+
+- name: 2d.line.join.round
+  desc: lineJoin 'round' is rendered correctly
+  code: |
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 100, 50);
+
+    var tol = 1; // tolerance to avoid antialiasing artifacts
+
+    ctx.lineJoin = 'round';
+    ctx.lineWidth = 20;
+
+    ctx.fillStyle = '#f00';
+    ctx.strokeStyle = '#0f0';
+
+    ctx.fillRect(10, 10, 20, 20);
+    ctx.fillRect(20, 20, 20, 20);
+    ctx.beginPath();
+    ctx.moveTo(30, 20);
+    ctx.arc(30, 20, 10-tol, 0, 2*Math.PI, true);
+    ctx.fill();
+
+    ctx.beginPath();
+    ctx.moveTo(10, 20);
+    ctx.lineTo(30, 20);
+    ctx.lineTo(30, 40);
+    ctx.stroke();
+
+
+    ctx.fillStyle = '#0f0';
+    ctx.strokeStyle = '#f00';
+
+    ctx.beginPath();
+    ctx.moveTo(60, 20);
+    ctx.lineTo(80, 20);
+    ctx.lineTo(80, 40);
+    ctx.stroke();
+
+    ctx.fillRect(60, 10, 20, 20);
+    ctx.fillRect(70, 20, 20, 20);
+    ctx.beginPath();
+    ctx.moveTo(80, 20);
+    ctx.arc(80, 20, 10+tol, 0, 2*Math.PI, true);
+    ctx.fill();
+
+    @assert pixel 36,14 == 0,255,0,255;
+    @assert pixel 36,13 == 0,255,0,255;
+    @assert pixel 37,13 == 0,255,0,255;
+    @assert pixel 38,13 == 0,255,0,255;
+    @assert pixel 38,12 == 0,255,0,255;
+
+    @assert pixel 86,14 == 0,255,0,255;
+    @assert pixel 86,13 == 0,255,0,255;
+    @assert pixel 87,13 == 0,255,0,255;
+    @assert pixel 88,13 == 0,255,0,255;
+    @assert pixel 88,12 == 0,255,0,255;
+  expected: green
+
+- name: 2d.line.join.miter
+  desc: lineJoin 'miter' is rendered correctly
+  code: |
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 100, 50);
+
+    ctx.lineJoin = 'miter';
+    ctx.lineWidth = 20;
+
+    ctx.fillStyle = '#f00';
+    ctx.strokeStyle = '#0f0';
+
+    ctx.fillStyle = '#f00';
+    ctx.strokeStyle = '#0f0';
+
+    ctx.fillRect(10, 10, 30, 20);
+    ctx.fillRect(20, 10, 20, 30);
+
+    ctx.beginPath();
+    ctx.moveTo(10, 20);
+    ctx.lineTo(30, 20);
+    ctx.lineTo(30, 40);
+    ctx.stroke();
+
+
+    ctx.fillStyle = '#0f0';
+    ctx.strokeStyle = '#f00';
+
+    ctx.beginPath();
+    ctx.moveTo(60, 20);
+    ctx.lineTo(80, 20);
+    ctx.lineTo(80, 40);
+    ctx.stroke();
+
+    ctx.fillRect(60, 10, 30, 20);
+    ctx.fillRect(70, 10, 20, 30);
+
+    @assert pixel 38,12 == 0,255,0,255;
+    @assert pixel 39,11 == 0,255,0,255;
+    @assert pixel 40,10 == 0,255,0,255;
+    @assert pixel 41,9 == 0,255,0,255;
+    @assert pixel 42,8 == 0,255,0,255;
+
+    @assert pixel 88,12 == 0,255,0,255;
+    @assert pixel 89,11 == 0,255,0,255;
+    @assert pixel 90,10 == 0,255,0,255;
+    @assert pixel 91,9 == 0,255,0,255;
+    @assert pixel 92,8 == 0,255,0,255;
+  expected: green
+
+- name: 2d.line.join.open
+  desc: Line joins are not drawn at the corner of an unclosed rectangle
+  code: |
+    ctx.fillStyle = '#0f0';
+    ctx.strokeStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+
+    ctx.lineJoin = 'miter';
+    ctx.lineWidth = 200;
+
+    ctx.beginPath();
+    ctx.moveTo(100, 50);
+    ctx.lineTo(100, 1000);
+    ctx.lineTo(1000, 1000);
+    ctx.lineTo(1000, 50);
+    ctx.lineTo(100, 50);
+    ctx.stroke();
+
+    @assert pixel 1,1 == 0,255,0,255;
+    @assert pixel 48,1 == 0,255,0,255;
+    @assert pixel 48,48 == 0,255,0,255;
+    @assert pixel 1,48 == 0,255,0,255;
+  expected: green
+
+- name: 2d.line.join.closed
+  desc: Line joins are drawn at the corner of a closed rectangle
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.strokeStyle = '#0f0';
+    ctx.fillRect(0, 0, 100, 50);
+
+    ctx.lineJoin = 'miter';
+    ctx.lineWidth = 200;
+
+    ctx.beginPath();
+    ctx.moveTo(100, 50);
+    ctx.lineTo(100, 1000);
+    ctx.lineTo(1000, 1000);
+    ctx.lineTo(1000, 50);
+    ctx.closePath();
+    ctx.stroke();
+
+    @assert pixel 1,1 == 0,255,0,255;
+    @assert pixel 48,1 == 0,255,0,255;
+    @assert pixel 48,48 == 0,255,0,255;
+    @assert pixel 1,48 == 0,255,0,255;
+  expected: green
+
+- name: 2d.line.join.parallel
+  desc: Line joins are drawn at 180-degree joins
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+
+    ctx.strokeStyle = '#0f0';
+    ctx.lineWidth = 300;
+    ctx.lineJoin = 'round';
+    ctx.beginPath();
+    ctx.moveTo(-100, 25);
+    ctx.lineTo(0, 25);
+    ctx.lineTo(-100, 25);
+    ctx.stroke();
+
+    @assert pixel 1,1 == 0,255,0,255;
+    @assert pixel 48,1 == 0,255,0,255;
+    @assert pixel 48,48 == 0,255,0,255;
+    @assert pixel 1,48 == 0,255,0,255;
+  expected: green
+
+- name: 2d.line.join.valid
+  desc: Setting lineJoin to valid values works
+  code: |
+    ctx.lineJoin = 'bevel'
+    @assert ctx.lineJoin === 'bevel';
+
+    ctx.lineJoin = 'round';
+    @assert ctx.lineJoin === 'round';
+
+    ctx.lineJoin = 'miter';
+    @assert ctx.lineJoin === 'miter';
+
+- name: 2d.line.join.invalid
+  desc: Setting lineJoin to invalid values is ignored
+  code: |
+    ctx.lineJoin = 'bevel'
+    @assert ctx.lineJoin === 'bevel';
+
+    ctx.lineJoin = 'bevel';
+    ctx.lineJoin = 'invalid';
+    @assert ctx.lineJoin === 'bevel';
+
+    ctx.lineJoin = 'bevel';
+    ctx.lineJoin = 'ROUND';
+    @assert ctx.lineJoin === 'bevel';
+
+    ctx.lineJoin = 'bevel';
+    ctx.lineJoin = 'round\0';
+    @assert ctx.lineJoin === 'bevel';
+
+    ctx.lineJoin = 'bevel';
+    ctx.lineJoin = 'round ';
+    @assert ctx.lineJoin === 'bevel';
+
+    ctx.lineJoin = 'bevel';
+    ctx.lineJoin = "";
+    @assert ctx.lineJoin === 'bevel';
+
+    ctx.lineJoin = 'bevel';
+    ctx.lineJoin = 'butt';
+    @assert ctx.lineJoin === 'bevel';
+
+- name: 2d.line.miter.exceeded
+  desc: Miter joins are not drawn when the miter limit is exceeded
+  code: |
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 100, 50);
+
+    ctx.lineWidth = 400;
+    ctx.lineJoin = 'miter';
+
+    ctx.strokeStyle = '#f00';
+    ctx.miterLimit = 1.414;
+    ctx.beginPath();
+    ctx.moveTo(200, 1000);
+    ctx.lineTo(200, 200);
+    ctx.lineTo(1000, 201); // slightly non-right-angle to avoid being a special case
+    ctx.stroke();
+
+    @assert pixel 1,1 == 0,255,0,255;
+    @assert pixel 48,1 == 0,255,0,255;
+    @assert pixel 48,48 == 0,255,0,255;
+    @assert pixel 1,48 == 0,255,0,255;
+  expected: green
+
+- name: 2d.line.miter.acute
+  desc: Miter joins are drawn correctly with acute angles
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+
+    ctx.lineWidth = 200;
+    ctx.lineJoin = 'miter';
+
+    ctx.strokeStyle = '#0f0';
+    ctx.miterLimit = 2.614;
+    ctx.beginPath();
+    ctx.moveTo(100, 1000);
+    ctx.lineTo(100, 100);
+    ctx.lineTo(1000, 1000);
+    ctx.stroke();
+
+    ctx.strokeStyle = '#f00';
+    ctx.miterLimit = 2.613;
+    ctx.beginPath();
+    ctx.moveTo(100, 1000);
+    ctx.lineTo(100, 100);
+    ctx.lineTo(1000, 1000);
+    ctx.stroke();
+
+    @assert pixel 1,1 == 0,255,0,255;
+    @assert pixel 48,1 == 0,255,0,255;
+    @assert pixel 48,48 == 0,255,0,255;
+    @assert pixel 1,48 == 0,255,0,255;
+  expected: green
+
+- name: 2d.line.miter.obtuse
+  desc: Miter joins are drawn correctly with obtuse angles
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+
+    ctx.lineWidth = 1600;
+    ctx.lineJoin = 'miter';
+
+    ctx.strokeStyle = '#0f0';
+    ctx.miterLimit = 1.083;
+    ctx.beginPath();
+    ctx.moveTo(800, 10000);
+    ctx.lineTo(800, 300);
+    ctx.lineTo(10000, -8900);
+    ctx.stroke();
+
+    ctx.strokeStyle = '#f00';
+    ctx.miterLimit = 1.082;
+    ctx.beginPath();
+    ctx.moveTo(800, 10000);
+    ctx.lineTo(800, 300);
+    ctx.lineTo(10000, -8900);
+    ctx.stroke();
+
+    @assert pixel 1,1 == 0,255,0,255;
+    @assert pixel 48,1 == 0,255,0,255;
+    @assert pixel 48,48 == 0,255,0,255;
+    @assert pixel 1,48 == 0,255,0,255;
+  expected: green
+
+- name: 2d.line.miter.rightangle
+  desc: Miter joins are not drawn when the miter limit is exceeded, on exact right
+    angles
+  code: |
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 100, 50);
+
+    ctx.lineWidth = 400;
+    ctx.lineJoin = 'miter';
+
+    ctx.strokeStyle = '#f00';
+    ctx.miterLimit = 1.414;
+    ctx.beginPath();
+    ctx.moveTo(200, 1000);
+    ctx.lineTo(200, 200);
+    ctx.lineTo(1000, 200);
+    ctx.stroke();
+
+    @assert pixel 1,1 == 0,255,0,255;
+    @assert pixel 48,1 == 0,255,0,255;
+    @assert pixel 48,48 == 0,255,0,255;
+    @assert pixel 1,48 == 0,255,0,255;
+  expected: green
+
+- name: 2d.line.miter.lineedge
+  desc: Miter joins are not drawn when the miter limit is exceeded at the corners
+    of a zero-height rectangle
+  code: |
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 100, 50);
+
+    ctx.lineWidth = 200;
+    ctx.lineJoin = 'miter';
+
+    ctx.strokeStyle = '#f00';
+    ctx.miterLimit = 1.414;
+    ctx.beginPath();
+    ctx.strokeRect(100, 25, 200, 0);
+
+    @assert pixel 1,1 == 0,255,0,255;
+    @assert pixel 48,1 == 0,255,0,255;
+    @assert pixel 48,48 == 0,255,0,255;
+    @assert pixel 1,48 == 0,255,0,255;
+  expected: green
+
+- name: 2d.line.miter.within
+  desc: Miter joins are drawn when the miter limit is not quite exceeded
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+
+    ctx.lineWidth = 400;
+    ctx.lineJoin = 'miter';
+
+    ctx.strokeStyle = '#0f0';
+    ctx.miterLimit = 1.416;
+    ctx.beginPath();
+    ctx.moveTo(200, 1000);
+    ctx.lineTo(200, 200);
+    ctx.lineTo(1000, 201);
+    ctx.stroke();
+
+    @assert pixel 1,1 == 0,255,0,255;
+    @assert pixel 48,1 == 0,255,0,255;
+    @assert pixel 48,48 == 0,255,0,255;
+    @assert pixel 1,48 == 0,255,0,255;
+  expected: green
+
+- name: 2d.line.miter.valid
+  desc: Setting miterLimit to valid values works
+  code: |
+    ctx.miterLimit = 1.5;
+    @assert ctx.miterLimit === 1.5;
+
+    ctx.miterLimit = "1e1";
+    @assert ctx.miterLimit === 10;
+
+    ctx.miterLimit = 1/1024;
+    @assert ctx.miterLimit === 1/1024;
+
+    ctx.miterLimit = 1000;
+    @assert ctx.miterLimit === 1000;
+
+- name: 2d.line.miter.invalid
+  desc: Setting miterLimit to invalid values is ignored
+  code: |
+    ctx.miterLimit = 1.5;
+    @assert ctx.miterLimit === 1.5;
+
+    ctx.miterLimit = 1.5;
+    ctx.miterLimit = 0;
+    @assert ctx.miterLimit === 1.5;
+
+    ctx.miterLimit = 1.5;
+    ctx.miterLimit = -1;
+    @assert ctx.miterLimit === 1.5;
+
+    ctx.miterLimit = 1.5;
+    ctx.miterLimit = Infinity;
+    @assert ctx.miterLimit === 1.5;
+
+    ctx.miterLimit = 1.5;
+    ctx.miterLimit = -Infinity;
+    @assert ctx.miterLimit === 1.5;
+
+    ctx.miterLimit = 1.5;
+    ctx.miterLimit = NaN;
+    @assert ctx.miterLimit === 1.5;
+
+    ctx.miterLimit = 1.5;
+    ctx.miterLimit = 'string';
+    @assert ctx.miterLimit === 1.5;
+
+    ctx.miterLimit = 1.5;
+    ctx.miterLimit = true;
+    @assert ctx.miterLimit === 1;
+
+    ctx.miterLimit = 1.5;
+    ctx.miterLimit = false;
+    @assert ctx.miterLimit === 1.5;
+
+- name: 2d.line.cross
+  code: |
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 100, 50);
+
+    ctx.lineWidth = 200;
+    ctx.lineJoin = 'bevel';
+
+    ctx.strokeStyle = '#f00';
+    ctx.beginPath();
+    ctx.moveTo(110, 50);
+    ctx.lineTo(110, 60);
+    ctx.lineTo(100, 60);
+    ctx.stroke();
+
+    @assert pixel 1,1 == 0,255,0,255;
+    @assert pixel 48,1 == 0,255,0,255;
+    @assert pixel 48,48 == 0,255,0,255;
+    @assert pixel 1,48 == 0,255,0,255;
+  expected: green
+
+- name: 2d.line.union
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+
+    ctx.lineWidth = 100;
+    ctx.lineCap = 'round';
+
+    ctx.strokeStyle = '#0f0';
+    ctx.beginPath();
+    ctx.moveTo(0, 24);
+    ctx.lineTo(100, 25);
+    ctx.lineTo(0, 26);
+    ctx.closePath();
+    ctx.stroke();
+
+    @assert pixel 1,1 == 0,255,0,255;
+    @assert pixel 25,1 == 0,255,0,255;
+    @assert pixel 48,1 == 0,255,0,255;
+    @assert pixel 1,48 == 0,255,0,255;
+    @assert pixel 25,1 == 0,255,0,255;
+    @assert pixel 48,48 == 0,255,0,255;
+  expected: green
+
+- name: 2d.line.invalid.strokestyle
+  desc: Verify correct behavior of canvas on an invalid strokeStyle()
+  code: |
+    ctx.strokeStyle = 'rgb(0, 255, 0)';
+    ctx.strokeStyle = 'nonsense';
+    ctx.lineWidth = 200;
+    ctx.moveTo(0,100);
+    ctx.lineTo(200,100);
+    ctx.stroke();
+    var imageData = ctx.getImageData(0, 0, 200, 200);
+    var imgdata = imageData.data;
+    @assert imgdata[4] == 0;
+    @assert imgdata[5] == 255;
+    @assert imgdata[6] == 0;
diff --git a/testing/web-platform/tests/html/canvas/tools/yaml-new/path-objects.yaml b/testing/web-platform/tests/html/canvas/tools/yaml-new/path-objects.yaml
new file mode 100644
index 0000000000..eec142c769
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/tools/yaml-new/path-objects.yaml
@@ -0,0 +1,3378 @@
+- name: 2d.path.initial
+  #mozilla: { bug: TODO }
+  code: |
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.closePath();
+    ctx.fillStyle = '#f00';
+    ctx.fill();
+    @assert pixel 50,25 == 0,255,0,255;
+  expected: green
+
+- name: 2d.path.beginPath
+  code: |
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.rect(0, 0, 100, 50);
+    ctx.beginPath();
+    ctx.fillStyle = '#f00';
+    ctx.fill();
+    @assert pixel 50,25 == 0,255,0,255;
+  expected: green
+
+- name: 2d.path.moveTo.basic
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.rect(0, 0, 10, 50);
+    ctx.moveTo(100, 0);
+    ctx.lineTo(10, 0);
+    ctx.lineTo(10, 50);
+    ctx.lineTo(100, 50);
+    ctx.fillStyle = '#0f0';
+    ctx.fill();
+    @assert pixel 90,25 == 0,255,0,255;
+  expected: green
+
+- name: 2d.path.moveTo.newsubpath
+  code: |
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.beginPath();
+    ctx.moveTo(0, 0);
+    ctx.moveTo(100, 0);
+    ctx.moveTo(100, 50);
+    ctx.moveTo(0, 50);
+    ctx.fillStyle = '#f00';
+    ctx.fill();
+    @assert pixel 50,25 == 0,255,0,255;
+  expected: green
+
+- name: 2d.path.moveTo.multiple
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.moveTo(0, 25);
+    ctx.moveTo(100, 25);
+    ctx.moveTo(0, 25);
+    ctx.lineTo(100, 25);
+    ctx.strokeStyle = '#0f0';
+    ctx.lineWidth = 50;
+    ctx.stroke();
+    @assert pixel 50,25 == 0,255,0,255;
+  expected: green
+
+- name: 2d.path.moveTo.nonfinite
+  desc: moveTo() with Infinity/NaN is ignored
+  code: |
+    ctx.moveTo(0, 0);
+    ctx.lineTo(100, 0);
+    @nonfinite ctx.moveTo(<0 Infinity -Infinity NaN>, <50 Infinity -Infinity NaN>);
+    ctx.lineTo(100, 50);
+    ctx.lineTo(0, 50);
+    ctx.fillStyle = '#0f0';
+    ctx.fill();
+    @assert pixel 50,25 == 0,255,0,255;
+  expected: green
+
+- name: 2d.path.closePath.empty
+  code: |
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.closePath();
+    ctx.fillStyle = '#f00';
+    ctx.fill();
+    @assert pixel 50,25 == 0,255,0,255;
+  expected: green
+
+- name: 2d.path.closePath.newline
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.strokeStyle = '#0f0';
+    ctx.lineWidth = 50;
+    ctx.moveTo(-100, 25);
+    ctx.lineTo(-100, -100);
+    ctx.lineTo(200, -100);
+    ctx.lineTo(200, 25);
+    ctx.closePath();
+    ctx.stroke();
+    @assert pixel 50,25 == 0,255,0,255;
+  expected: green
+
+- name: 2d.path.closePath.nextpoint
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.strokeStyle = '#0f0';
+    ctx.lineWidth = 50;
+    ctx.moveTo(-100, 25);
+    ctx.lineTo(-100, -1000);
+    ctx.closePath();
+    ctx.lineTo(1000, 25);
+    ctx.stroke();
+    @assert pixel 50,25 == 0,255,0,255;
+  expected: green
+
+- name: 2d.path.lineTo.ensuresubpath.1
+  desc: If there is no subpath, the point is added and nothing is drawn
+  code: |
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.strokeStyle = '#f00';
+    ctx.lineWidth = 50;
+    ctx.beginPath();
+    ctx.lineTo(100, 50);
+    ctx.stroke();
+    @assert pixel 50,25 == 0,255,0,255;
+  expected: green
+
+- name: 2d.path.lineTo.ensuresubpath.2
+  desc: If there is no subpath, the point is added and used for subsequent drawing
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.strokeStyle = '#0f0';
+    ctx.lineWidth = 50;
+    ctx.beginPath();
+    ctx.lineTo(0, 25);
+    ctx.lineTo(100, 25);
+    ctx.stroke();
+    @assert pixel 50,25 == 0,255,0,255;
+  expected: green
+
+- name: 2d.path.lineTo.basic
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.strokeStyle = '#0f0';
+    ctx.lineWidth = 50;
+    ctx.beginPath();
+    ctx.moveTo(0, 25);
+    ctx.lineTo(100, 25);
+    ctx.stroke();
+    @assert pixel 50,25 == 0,255,0,255;
+  expected: green
+
+- name: 2d.path.lineTo.nextpoint
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.strokeStyle = '#0f0';
+    ctx.lineWidth = 50;
+    ctx.beginPath();
+    ctx.moveTo(-100, -100);
+    ctx.lineTo(0, 25);
+    ctx.lineTo(100, 25);
+    ctx.stroke();
+    @assert pixel 50,25 == 0,255,0,255;
+  expected: green
+
+- name: 2d.path.lineTo.nonfinite
+  desc: lineTo() with Infinity/NaN is ignored
+  code: |
+    ctx.moveTo(0, 0);
+    ctx.lineTo(100, 0);
+    @nonfinite ctx.lineTo(<0 Infinity -Infinity NaN>, <50 Infinity -Infinity NaN>);
+    ctx.lineTo(100, 50);
+    ctx.lineTo(0, 50);
+    ctx.fillStyle = '#0f0';
+    ctx.fill();
+    @assert pixel 50,25 == 0,255,0,255;
+    @assert pixel 90,45 == 0,255,0,255;
+  expected: green
+
+- name: 2d.path.lineTo.nonfinite.details
+  desc: lineTo() with Infinity/NaN for first arg still converts the second arg
+  code: |
+    for (var arg1 of [Infinity, -Infinity, NaN]) {
+      var converted = false;
+      ctx.lineTo(arg1, { valueOf: function() { converted = true; return 0; } });
+      @assert converted;
+    }
+  expected: clear
+
+- name: 2d.path.quadraticCurveTo.ensuresubpath.1
+  desc: If there is no subpath, the first control point is added (and nothing is drawn
+    up to it)
+  code: |
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.strokeStyle = '#f00';
+    ctx.lineWidth = 50;
+    ctx.beginPath();
+    ctx.quadraticCurveTo(100, 50, 200, 50);
+    ctx.stroke();
+    @assert pixel 50,25 == 0,255,0,255;
+    @assert pixel 95,45 == 0,255,0,255; @moz-todo
+  expected: green
+
+- name: 2d.path.quadraticCurveTo.ensuresubpath.2
+  desc: If there is no subpath, the first control point is added
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.strokeStyle = '#0f0';
+    ctx.lineWidth = 50;
+    ctx.beginPath();
+    ctx.quadraticCurveTo(0, 25, 100, 25);
+    ctx.stroke();
+    @assert pixel 50,25 == 0,255,0,255;
+    @assert pixel 5,45 == 0,255,0,255; @moz-todo
+  expected: green
+
+- name: 2d.path.quadraticCurveTo.basic
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.strokeStyle = '#0f0';
+    ctx.lineWidth = 50;
+    ctx.beginPath();
+    ctx.moveTo(0, 25);
+    ctx.quadraticCurveTo(100, 25, 100, 25);
+    ctx.stroke();
+    @assert pixel 50,25 == 0,255,0,255;
+  expected: green
+
+- name: 2d.path.quadraticCurveTo.shape
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.strokeStyle = '#0f0';
+    ctx.lineWidth = 55;
+    ctx.beginPath();
+    ctx.moveTo(-1000, 1050);
+    ctx.quadraticCurveTo(0, -1000, 1200, 1050);
+    ctx.stroke();
+    @assert pixel 50,25 == 0,255,0,255;
+    @assert pixel 1,1 == 0,255,0,255;
+    @assert pixel 98,1 == 0,255,0,255;
+    @assert pixel 1,48 == 0,255,0,255;
+    @assert pixel 98,48 == 0,255,0,255;
+  expected: green
+
+- name: 2d.path.quadraticCurveTo.scaled
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.scale(1000, 1000);
+    ctx.strokeStyle = '#0f0';
+    ctx.lineWidth = 0.055;
+    ctx.beginPath();
+    ctx.moveTo(-1, 1.05);
+    ctx.quadraticCurveTo(0, -1, 1.2, 1.05);
+    ctx.stroke();
+    @assert pixel 50,25 == 0,255,0,255;
+    @assert pixel 1,1 == 0,255,0,255;
+    @assert pixel 98,1 == 0,255,0,255;
+    @assert pixel 1,48 == 0,255,0,255;
+    @assert pixel 98,48 == 0,255,0,255;
+  expected: green
+
+- name: 2d.path.quadraticCurveTo.nonfinite
+  desc: quadraticCurveTo() with Infinity/NaN is ignored
+  code: |
+    ctx.moveTo(0, 0);
+    ctx.lineTo(100, 0);
+    @nonfinite ctx.quadraticCurveTo(<0 Infinity -Infinity NaN>, <50 Infinity -Infinity NaN>, <0 Infinity -Infinity NaN>, <50 Infinity -Infinity NaN>);
+    ctx.lineTo(100, 50);
+    ctx.lineTo(0, 50);
+    ctx.fillStyle = '#0f0';
+    ctx.fill();
+    @assert pixel 50,25 == 0,255,0,255;
+    @assert pixel 90,45 == 0,255,0,255;
+  expected: green
+
+- name: 2d.path.bezierCurveTo.ensuresubpath.1
+  desc: If there is no subpath, the first control point is added (and nothing is drawn
+    up to it)
+  code: |
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.strokeStyle = '#f00';
+    ctx.lineWidth = 50;
+    ctx.beginPath();
+    ctx.bezierCurveTo(100, 50, 200, 50, 200, 50);
+    ctx.stroke();
+    @assert pixel 50,25 == 0,255,0,255;
+    @assert pixel 95,45 == 0,255,0,255;
+  expected: green
+
+- name: 2d.path.bezierCurveTo.ensuresubpath.2
+  desc: If there is no subpath, the first control point is added
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.strokeStyle = '#0f0';
+    ctx.lineWidth = 50;
+    ctx.beginPath();
+    ctx.bezierCurveTo(0, 25, 100, 25, 100, 25);
+    ctx.stroke();
+    @assert pixel 50,25 == 0,255,0,255;
+    @assert pixel 5,45 == 0,255,0,255;
+  expected: green
+
+- name: 2d.path.bezierCurveTo.basic
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.strokeStyle = '#0f0';
+    ctx.lineWidth = 50;
+    ctx.beginPath();
+    ctx.moveTo(0, 25);
+    ctx.bezierCurveTo(100, 25, 100, 25, 100, 25);
+    ctx.stroke();
+    @assert pixel 50,25 == 0,255,0,255;
+  expected: green
+
+- name: 2d.path.bezierCurveTo.shape
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.strokeStyle = '#0f0';
+    ctx.lineWidth = 55;
+    ctx.beginPath();
+    ctx.moveTo(-2000, 3100);
+    ctx.bezierCurveTo(-2000, -1000, 2100, -1000, 2100, 3100);
+    ctx.stroke();
+    @assert pixel 50,25 == 0,255,0,255;
+    @assert pixel 1,1 == 0,255,0,255;
+    @assert pixel 98,1 == 0,255,0,255;
+    @assert pixel 1,48 == 0,255,0,255;
+    @assert pixel 98,48 == 0,255,0,255;
+  expected: green
+
+- name: 2d.path.bezierCurveTo.scaled
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.scale(1000, 1000);
+    ctx.strokeStyle = '#0f0';
+    ctx.lineWidth = 0.055;
+    ctx.beginPath();
+    ctx.moveTo(-2, 3.1);
+    ctx.bezierCurveTo(-2, -1, 2.1, -1, 2.1, 3.1);
+    ctx.stroke();
+    @assert pixel 50,25 == 0,255,0,255;
+    @assert pixel 1,1 == 0,255,0,255;
+    @assert pixel 98,1 == 0,255,0,255;
+    @assert pixel 1,48 == 0,255,0,255;
+    @assert pixel 98,48 == 0,255,0,255;
+  expected: green
+
+- name: 2d.path.bezierCurveTo.nonfinite
+  desc: bezierCurveTo() with Infinity/NaN is ignored
+  code: |
+    ctx.moveTo(0, 0);
+    ctx.lineTo(100, 0);
+    @nonfinite ctx.bezierCurveTo(<0 Infinity -Infinity NaN>, <50 Infinity -Infinity NaN>, <0 Infinity -Infinity NaN>, <50 Infinity -Infinity NaN>, <0 Infinity -Infinity NaN>, <50 Infinity -Infinity NaN>);
+    ctx.lineTo(100, 50);
+    ctx.lineTo(0, 50);
+    ctx.fillStyle = '#0f0';
+    ctx.fill();
+    @assert pixel 50,25 == 0,255,0,255;
+    @assert pixel 90,45 == 0,255,0,255;
+  expected: green
+
+- name: 2d.path.arcTo.ensuresubpath.1
+  desc: If there is no subpath, the first control point is added (and nothing is drawn
+    up to it)
+  code: |
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.lineWidth = 50;
+    ctx.strokeStyle = '#f00';
+    ctx.beginPath();
+    ctx.arcTo(100, 50, 200, 50, 0.1);
+    ctx.stroke();
+    @assert pixel 50,25 == 0,255,0,255;
+  expected: green
+
+- name: 2d.path.arcTo.ensuresubpath.2
+  desc: If there is no subpath, the first control point is added
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.lineWidth = 50;
+    ctx.strokeStyle = '#0f0';
+    ctx.beginPath();
+    ctx.arcTo(0, 25, 50, 250, 0.1); // adds (x1,y1), draws nothing
+    ctx.lineTo(100, 25);
+    ctx.stroke();
+    @assert pixel 50,25 == 0,255,0,255;
+  expected: green
+
+- name: 2d.path.arcTo.coincide.1
+  desc: arcTo() has no effect if P0 = P1
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.lineWidth = 50;
+
+    ctx.strokeStyle = '#0f0';
+    ctx.beginPath();
+    ctx.moveTo(0, 25);
+    ctx.arcTo(0, 25, 50, 1000, 1);
+    ctx.lineTo(100, 25);
+    ctx.stroke();
+
+    ctx.strokeStyle = '#f00';
+    ctx.beginPath();
+    ctx.moveTo(50, 25);
+    ctx.arcTo(50, 25, 100, 25, 1);
+    ctx.stroke();
+
+    @assert pixel 50,1 == 0,255,0,255;
+    @assert pixel 50,25 == 0,255,0,255;
+    @assert pixel 50,48 == 0,255,0,255;
+  expected: green
+
+- name: 2d.path.arcTo.coincide.2
+  desc: arcTo() draws a straight line to P1 if P1 = P2
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.lineWidth = 50;
+    ctx.strokeStyle = '#0f0';
+    ctx.beginPath();
+    ctx.moveTo(0, 25);
+    ctx.arcTo(100, 25, 100, 25, 1);
+    ctx.stroke();
+
+    @assert pixel 50,25 == 0,255,0,255;
+  expected: green
+
+- name: 2d.path.arcTo.collinear.1
+  desc: arcTo() with all points on a line, and P1 between P0/P2, draws a straight
+    line to P1
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.lineWidth = 50;
+
+    ctx.strokeStyle = '#0f0';
+    ctx.beginPath();
+    ctx.moveTo(0, 25);
+    ctx.arcTo(100, 25, 200, 25, 1);
+    ctx.stroke();
+
+    ctx.strokeStyle = '#f00';
+    ctx.beginPath();
+    ctx.moveTo(-100, 25);
+    ctx.arcTo(0, 25, 100, 25, 1);
+    ctx.stroke();
+
+    @assert pixel 50,25 == 0,255,0,255;
+  expected: green
+
+- name: 2d.path.arcTo.collinear.2
+  desc: arcTo() with all points on a line, and P2 between P0/P1, draws a straight
+    line to P1
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.lineWidth = 50;
+
+    ctx.strokeStyle = '#0f0';
+    ctx.beginPath();
+    ctx.moveTo(0, 25);
+    ctx.arcTo(100, 25, 10, 25, 1);
+    ctx.stroke();
+
+    ctx.strokeStyle = '#f00';
+    ctx.beginPath();
+    ctx.moveTo(100, 25);
+    ctx.arcTo(200, 25, 110, 25, 1);
+    ctx.stroke();
+
+    @assert pixel 50,25 == 0,255,0,255;
+  expected: green
+
+- name: 2d.path.arcTo.collinear.3
+  desc: arcTo() with all points on a line, and P0 between P1/P2, draws a straight
+    line to P1
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.lineWidth = 50;
+
+    ctx.strokeStyle = '#0f0';
+    ctx.beginPath();
+    ctx.moveTo(0, 25);
+    ctx.arcTo(100, 25, -100, 25, 1);
+    ctx.stroke();
+
+    ctx.strokeStyle = '#f00';
+    ctx.beginPath();
+    ctx.moveTo(100, 25);
+    ctx.arcTo(200, 25, 0, 25, 1);
+    ctx.stroke();
+
+    ctx.beginPath();
+    ctx.moveTo(-100, 25);
+    ctx.arcTo(0, 25, -200, 25, 1);
+    ctx.stroke();
+
+    @assert pixel 50,25 == 0,255,0,255;
+  expected: green
+
+- name: 2d.path.arcTo.shape.curve1
+  desc: arcTo() curves in the right kind of shape
+  code: |
+    var tol = 1.5; // tolerance to avoid antialiasing artifacts
+
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 100, 50);
+
+    ctx.strokeStyle = '#f00';
+    ctx.lineWidth = 10;
+    ctx.beginPath();
+    ctx.moveTo(10, 25);
+    ctx.arcTo(75, 25, 75, 60, 20);
+    ctx.stroke();
+
+    ctx.fillStyle = '#0f0';
+    ctx.beginPath();
+    ctx.rect(10, 20, 45, 10);
+    ctx.moveTo(80, 45);
+    ctx.arc(55, 45, 25+tol, 0, -Math.PI/2, true);
+    ctx.arc(55, 45, 15-tol, -Math.PI/2, 0, false);
+    ctx.fill();
+
+    @assert pixel 50,25 == 0,255,0,255;
+    @assert pixel 55,19 == 0,255,0,255;
+    @assert pixel 55,20 == 0,255,0,255;
+    @assert pixel 55,21 == 0,255,0,255;
+    @assert pixel 64,22 == 0,255,0,255;
+    @assert pixel 65,21 == 0,255,0,255;
+    @assert pixel 72,28 == 0,255,0,255;
+    @assert pixel 73,27 == 0,255,0,255;
+    @assert pixel 78,36 == 0,255,0,255;
+    @assert pixel 79,35 == 0,255,0,255;
+    @assert pixel 80,44 == 0,255,0,255;
+    @assert pixel 80,45 == 0,255,0,255;
+    @assert pixel 80,46 == 0,255,0,255;
+    @assert pixel 65,45 == 0,255,0,255;
+  expected: green
+
+- name: 2d.path.arcTo.shape.curve2
+  desc: arcTo() curves in the right kind of shape
+  code: |
+    var tol = 1.5; // tolerance to avoid antialiasing artifacts
+
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 100, 50);
+
+    ctx.fillStyle = '#f00';
+    ctx.beginPath();
+    ctx.rect(10, 20, 45, 10);
+    ctx.moveTo(80, 45);
+    ctx.arc(55, 45, 25-tol, 0, -Math.PI/2, true);
+    ctx.arc(55, 45, 15+tol, -Math.PI/2, 0, false);
+    ctx.fill();
+
+    ctx.strokeStyle = '#0f0';
+    ctx.lineWidth = 10;
+    ctx.beginPath();
+    ctx.moveTo(10, 25);
+    ctx.arcTo(75, 25, 75, 60, 20);
+    ctx.stroke();
+
+    @assert pixel 50,25 == 0,255,0,255;
+    @assert pixel 55,19 == 0,255,0,255;
+    @assert pixel 55,20 == 0,255,0,255;
+    @assert pixel 55,21 == 0,255,0,255;
+    @assert pixel 64,22 == 0,255,0,255;
+    @assert pixel 65,21 == 0,255,0,255;
+    @assert pixel 72,28 == 0,255,0,255;
+    @assert pixel 73,27 == 0,255,0,255;
+    @assert pixel 78,36 == 0,255,0,255;
+    @assert pixel 79,35 == 0,255,0,255;
+    @assert pixel 80,44 == 0,255,0,255;
+    @assert pixel 80,45 == 0,255,0,255;
+    @assert pixel 80,46 == 0,255,0,255;
+  expected: green
+
+- name: 2d.path.arcTo.shape.start
+  desc: arcTo() draws a straight line from P0 to P1
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.strokeStyle = '#0f0';
+    ctx.lineWidth = 50;
+    ctx.beginPath();
+    ctx.moveTo(0, 25);
+    ctx.arcTo(200, 25, 200, 50, 10);
+    ctx.stroke();
+
+    @assert pixel 1,1 == 0,255,0,255;
+    @assert pixel 1,48 == 0,255,0,255;
+    @assert pixel 50,25 == 0,255,0,255;
+    @assert pixel 98,1 == 0,255,0,255;
+    @assert pixel 98,48 == 0,255,0,255;
+  expected: green
+
+- name: 2d.path.arcTo.shape.end
+  desc: arcTo() does not draw anything from P1 to P2
+  code: |
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.strokeStyle = '#f00';
+    ctx.lineWidth = 50;
+    ctx.beginPath();
+    ctx.moveTo(-100, -100);
+    ctx.arcTo(-100, 25, 200, 25, 10);
+    ctx.stroke();
+
+    @assert pixel 1,1 == 0,255,0,255;
+    @assert pixel 1,48 == 0,255,0,255;
+    @assert pixel 50,25 == 0,255,0,255;
+    @assert pixel 98,1 == 0,255,0,255;
+    @assert pixel 98,48 == 0,255,0,255;
+  expected: green
+
+- name: 2d.path.arcTo.negative
+  desc: arcTo() with negative radius throws an exception
+  code: |
+    @assert throws INDEX_SIZE_ERR ctx.arcTo(0, 0, 0, 0, -1);
+    var path = new Path2D();
+    @assert throws INDEX_SIZE_ERR path.arcTo(10, 10, 20, 20, -5);
+
+- name: 2d.path.arcTo.zero.1
+  desc: arcTo() with zero radius draws a straight line from P0 to P1
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.lineWidth = 50;
+
+    ctx.strokeStyle = '#0f0';
+    ctx.beginPath();
+    ctx.moveTo(0, 25);
+    ctx.arcTo(100, 25, 100, 100, 0);
+    ctx.stroke();
+
+    ctx.strokeStyle = '#f00';
+    ctx.beginPath();
+    ctx.moveTo(0, -25);
+    ctx.arcTo(50, -25, 50, 50, 0);
+    ctx.stroke();
+
+    @assert pixel 50,25 == 0,255,0,255;
+  expected: green
+
+- name: 2d.path.arcTo.zero.2
+  desc: arcTo() with zero radius draws a straight line from P0 to P1, even when all
+    points are collinear
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.lineWidth = 50;
+
+    ctx.strokeStyle = '#0f0';
+    ctx.beginPath();
+    ctx.moveTo(0, 25);
+    ctx.arcTo(100, 25, -100, 25, 0);
+    ctx.stroke();
+
+    ctx.strokeStyle = '#f00';
+    ctx.beginPath();
+    ctx.moveTo(100, 25);
+    ctx.arcTo(200, 25, 50, 25, 0);
+    ctx.stroke();
+
+    @assert pixel 50,25 == 0,255,0,255;
+  expected: green
+
+- name: 2d.path.arcTo.transformation
+  desc: arcTo joins up to the last subpath point correctly
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+
+    ctx.fillStyle = '#0f0';
+    ctx.beginPath();
+    ctx.moveTo(0, 50);
+    ctx.translate(100, 0);
+    ctx.arcTo(50, 50, 50, 0, 50);
+    ctx.lineTo(-100, 0);
+    ctx.fill();
+
+    @assert pixel 0,0 == 0,255,0,255;
+    @assert pixel 50,0 == 0,255,0,255;
+    @assert pixel 99,0 == 0,255,0,255;
+    @assert pixel 0,25 == 0,255,0,255;
+    @assert pixel 50,25 == 0,255,0,255;
+    @assert pixel 99,25 == 0,255,0,255;
+    @assert pixel 0,49 == 0,255,0,255;
+    @assert pixel 50,49 == 0,255,0,255;
+    @assert pixel 99,49 == 0,255,0,255;
+  expected: green
+
+- name: 2d.path.arcTo.scale
+  desc: arcTo scales the curve, not just the control points
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+
+    ctx.fillStyle = '#0f0';
+    ctx.beginPath();
+    ctx.moveTo(0, 50);
+    ctx.translate(100, 0);
+    ctx.scale(0.1, 1);
+    ctx.arcTo(50, 50, 50, 0, 50);
+    ctx.lineTo(-1000, 0);
+    ctx.fill();
+
+    @assert pixel 0,0 == 0,255,0,255;
+    @assert pixel 50,0 == 0,255,0,255;
+    @assert pixel 99,0 == 0,255,0,255;
+    @assert pixel 0,25 == 0,255,0,255;
+    @assert pixel 50,25 == 0,255,0,255;
+    @assert pixel 99,25 == 0,255,0,255;
+    @assert pixel 0,49 == 0,255,0,255;
+    @assert pixel 50,49 == 0,255,0,255;
+    @assert pixel 99,49 == 0,255,0,255;
+  expected: green
+
+- name: 2d.path.arcTo.nonfinite
+  desc: arcTo() with Infinity/NaN is ignored
+  code: |
+    ctx.moveTo(0, 0);
+    ctx.lineTo(100, 0);
+    @nonfinite ctx.arcTo(<0 Infinity -Infinity NaN>, <50 Infinity -Infinity NaN>, <0 Infinity -Infinity NaN>, <50 Infinity -Infinity NaN>, <0 Infinity -Infinity NaN>);
+    ctx.lineTo(100, 50);
+    ctx.lineTo(0, 50);
+    ctx.fillStyle = '#0f0';
+    ctx.fill();
+    @assert pixel 50,25 == 0,255,0,255;
+    @assert pixel 90,45 == 0,255,0,255;
+  expected: green
+
+
+- name: 2d.path.arc.empty
+  desc: arc() with an empty path does not draw a straight line to the start point
+  code: |
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.lineWidth = 50;
+    ctx.strokeStyle = '#f00';
+    ctx.beginPath();
+    ctx.arc(200, 25, 5, 0, 2*Math.PI, true);
+    ctx.stroke();
+    @assert pixel 50,25 == 0,255,0,255;
+  expected: green
+
+- name: 2d.path.arc.nonempty
+  desc: arc() with a non-empty path does draw a straight line to the start point
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.lineWidth = 50;
+    ctx.strokeStyle = '#0f0';
+    ctx.beginPath();
+    ctx.moveTo(0, 25);
+    ctx.arc(200, 25, 5, 0, 2*Math.PI, true);
+    ctx.stroke();
+    @assert pixel 50,25 == 0,255,0,255;
+  expected: green
+
+- name: 2d.path.arc.end
+  desc: arc() adds the end point of the arc to the subpath
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.lineWidth = 50;
+    ctx.strokeStyle = '#0f0';
+    ctx.beginPath();
+    ctx.moveTo(-100, 0);
+    ctx.arc(-100, 0, 25, -Math.PI/2, Math.PI/2, true);
+    ctx.lineTo(100, 25);
+    ctx.stroke();
+    @assert pixel 50,25 == 0,255,0,255;
+  expected: green
+
+- name: 2d.path.arc.default
+  desc: arc() with missing last argument defaults to clockwise
+  code: |
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.fillStyle = '#f00';
+    ctx.beginPath();
+    ctx.moveTo(100, 0);
+    ctx.arc(100, 0, 150, -Math.PI, Math.PI/2);
+    ctx.fill();
+    @assert pixel 50,25 == 0,255,0,255;
+  expected: green
+
+- name: 2d.path.arc.angle.1
+  desc: arc() draws pi/2 .. -pi anticlockwise correctly
+  code: |
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.fillStyle = '#f00';
+    ctx.beginPath();
+    ctx.moveTo(100, 0);
+    ctx.arc(100, 0, 150, Math.PI/2, -Math.PI, true);
+    ctx.fill();
+    @assert pixel 50,25 == 0,255,0,255;
+  expected: green
+
+- name: 2d.path.arc.angle.2
+  desc: arc() draws -3pi/2 .. -pi anticlockwise correctly
+  code: |
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.fillStyle = '#f00';
+    ctx.beginPath();
+    ctx.moveTo(100, 0);
+    ctx.arc(100, 0, 150, -3*Math.PI/2, -Math.PI, true);
+    ctx.fill();
+    @assert pixel 50,25 == 0,255,0,255;
+  expected: green
+
+- name: 2d.path.arc.angle.3
+  desc: arc() wraps angles mod 2pi when anticlockwise and end > start+2pi
+  code: |
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.fillStyle = '#f00';
+    ctx.beginPath();
+    ctx.moveTo(100, 0);
+    ctx.arc(100, 0, 150, (512+1/2)*Math.PI, (1024-1)*Math.PI, true);
+    ctx.fill();
+    @assert pixel 50,25 == 0,255,0,255;
+  expected: green
+
+- name: 2d.path.arc.angle.4
+  desc: arc() draws a full circle when clockwise and end > start+2pi
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.fillStyle = '#0f0';
+    ctx.beginPath();
+    ctx.moveTo(50, 25);
+    ctx.arc(50, 25, 60, (512+1/2)*Math.PI, (1024-1)*Math.PI, false);
+    ctx.fill();
+    @assert pixel 1,1 == 0,255,0,255;
+    @assert pixel 98,1 == 0,255,0,255;
+    @assert pixel 1,48 == 0,255,0,255;
+    @assert pixel 98,48 == 0,255,0,255;
+  expected: green
+
+- name: 2d.path.arc.angle.5
+  desc: arc() wraps angles mod 2pi when clockwise and start > end+2pi
+  code: |
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.fillStyle = '#f00';
+    ctx.beginPath();
+    ctx.moveTo(100, 0);
+    ctx.arc(100, 0, 150, (1024-1)*Math.PI, (512+1/2)*Math.PI, false);
+    ctx.fill();
+    @assert pixel 50,25 == 0,255,0,255;
+  expected: green
+
+- name: 2d.path.arc.angle.6
+  desc: arc() draws a full circle when anticlockwise and start > end+2pi
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.fillStyle = '#0f0';
+    ctx.beginPath();
+    ctx.moveTo(50, 25);
+    ctx.arc(50, 25, 60, (1024-1)*Math.PI, (512+1/2)*Math.PI, true);
+    ctx.fill();
+    @assert pixel 1,1 == 0,255,0,255;
+    @assert pixel 98,1 == 0,255,0,255;
+    @assert pixel 1,48 == 0,255,0,255;
+    @assert pixel 98,48 == 0,255,0,255;
+  expected: green
+
+- name: 2d.path.arc.zero.1
+  desc: arc() draws nothing when startAngle = endAngle and anticlockwise
+  code: |
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.strokeStyle = '#f00';
+    ctx.lineWidth = 100;
+    ctx.beginPath();
+    ctx.arc(50, 25, 50, 0, 0, true);
+    ctx.stroke();
+    @assert pixel 50,20 == 0,255,0,255;
+  expected: green
+
+- name: 2d.path.arc.zero.2
+  desc: arc() draws nothing when startAngle = endAngle and clockwise
+  code: |
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.strokeStyle = '#f00';
+    ctx.lineWidth = 100;
+    ctx.beginPath();
+    ctx.arc(50, 25, 50, 0, 0, false);
+    ctx.stroke();
+    @assert pixel 50,20 == 0,255,0,255;
+  expected: green
+
+- name: 2d.path.arc.twopie.1
+  desc: arc() draws nothing when end = start + 2pi-e and anticlockwise
+  code: |
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.strokeStyle = '#f00';
+    ctx.lineWidth = 100;
+    ctx.beginPath();
+    ctx.arc(50, 25, 50, 0, 2*Math.PI - 1e-4, true);
+    ctx.stroke();
+    @assert pixel 50,20 == 0,255,0,255;
+  expected: green
+
+- name: 2d.path.arc.twopie.2
+  desc: arc() draws a full circle when end = start + 2pi-e and clockwise
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.strokeStyle = '#0f0';
+    ctx.lineWidth = 100;
+    ctx.beginPath();
+    ctx.arc(50, 25, 50, 0, 2*Math.PI - 1e-4, false);
+    ctx.stroke();
+    @assert pixel 50,20 == 0,255,0,255;
+  expected: green
+
+- name: 2d.path.arc.twopie.3
+  desc: arc() draws a full circle when end = start + 2pi+e and anticlockwise
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.strokeStyle = '#0f0';
+    ctx.lineWidth = 100;
+    ctx.beginPath();
+    ctx.arc(50, 25, 50, 0, 2*Math.PI + 1e-4, true);
+    ctx.stroke();
+    @assert pixel 50,20 == 0,255,0,255;
+  expected: green
+
+- name: 2d.path.arc.twopie.4
+  desc: arc() draws nothing when end = start + 2pi+e and clockwise
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.strokeStyle = '#0f0';
+    ctx.lineWidth = 100;
+    ctx.beginPath();
+    ctx.arc(50, 25, 50, 0, 2*Math.PI + 1e-4, false);
+    ctx.stroke();
+    @assert pixel 50,20 == 0,255,0,255;
+  expected: green
+
+- name: 2d.path.arc.shape.1
+  desc: arc() from 0 to pi does not draw anything in the wrong half
+  code: |
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.lineWidth = 50;
+    ctx.strokeStyle = '#f00';
+    ctx.beginPath();
+    ctx.arc(50, 50, 50, 0, Math.PI, false);
+    ctx.stroke();
+    @assert pixel 50,25 == 0,255,0,255;
+    @assert pixel 1,1 == 0,255,0,255;
+    @assert pixel 98,1 == 0,255,0,255;
+    @assert pixel 1,48 == 0,255,0,255;
+    @assert pixel 20,48 == 0,255,0,255;
+    @assert pixel 98,48 == 0,255,0,255;
+  expected: green
+
+- name: 2d.path.arc.shape.2
+  desc: arc() from 0 to pi draws stuff in the right half
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.lineWidth = 100;
+    ctx.strokeStyle = '#0f0';
+    ctx.beginPath();
+    ctx.arc(50, 50, 50, 0, Math.PI, true);
+    ctx.stroke();
+    @assert pixel 50,25 == 0,255,0,255;
+    @assert pixel 1,1 == 0,255,0,255;
+    @assert pixel 98,1 == 0,255,0,255;
+    @assert pixel 1,48 == 0,255,0,255;
+    @assert pixel 20,48 == 0,255,0,255;
+    @assert pixel 98,48 == 0,255,0,255;
+  expected: green
+
+- name: 2d.path.arc.shape.3
+  desc: arc() from 0 to -pi/2 does not draw anything in the wrong quadrant
+  code: |
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.lineWidth = 100;
+    ctx.strokeStyle = '#f00';
+    ctx.beginPath();
+    ctx.arc(0, 50, 50, 0, -Math.PI/2, false);
+    ctx.stroke();
+    @assert pixel 50,25 == 0,255,0,255;
+    @assert pixel 1,1 == 0,255,0,255;
+    @assert pixel 98,1 == 0,255,0,255;
+    @assert pixel 1,48 == 0,255,0,255; @moz-todo
+    @assert pixel 98,48 == 0,255,0,255;
+  expected: green
+
+- name: 2d.path.arc.shape.4
+  desc: arc() from 0 to -pi/2 draws stuff in the right quadrant
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.lineWidth = 150;
+    ctx.strokeStyle = '#0f0';
+    ctx.beginPath();
+    ctx.arc(-50, 50, 100, 0, -Math.PI/2, true);
+    ctx.stroke();
+    @assert pixel 50,25 == 0,255,0,255;
+    @assert pixel 1,1 == 0,255,0,255;
+    @assert pixel 98,1 == 0,255,0,255;
+    @assert pixel 1,48 == 0,255,0,255;
+    @assert pixel 98,48 == 0,255,0,255;
+  expected: green
+
+- name: 2d.path.arc.shape.5
+  desc: arc() from 0 to 5pi does not draw crazy things
+  code: |
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.lineWidth = 200;
+    ctx.strokeStyle = '#f00';
+    ctx.beginPath();
+    ctx.arc(300, 0, 100, 0, 5*Math.PI, false);
+    ctx.stroke();
+    @assert pixel 50,25 == 0,255,0,255;
+    @assert pixel 1,1 == 0,255,0,255;
+    @assert pixel 98,1 == 0,255,0,255;
+    @assert pixel 1,48 == 0,255,0,255;
+    @assert pixel 98,48 == 0,255,0,255;
+  expected: green
+
+- name: 2d.path.arc.selfintersect.1
+  desc: arc() with lineWidth > 2*radius is drawn sensibly
+  code: |
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.lineWidth = 200;
+    ctx.strokeStyle = '#f00';
+    ctx.beginPath();
+    ctx.arc(100, 50, 25, 0, -Math.PI/2, true);
+    ctx.stroke();
+    ctx.beginPath();
+    ctx.arc(0, 0, 25, 0, -Math.PI/2, true);
+    ctx.stroke();
+    @assert pixel 1,1 == 0,255,0,255; @moz-todo
+    @assert pixel 50,25 == 0,255,0,255;
+  expected: green
+
+- name: 2d.path.arc.selfintersect.2
+  desc: arc() with lineWidth > 2*radius is drawn sensibly
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.lineWidth = 180;
+    ctx.strokeStyle = '#0f0';
+    ctx.beginPath();
+    ctx.arc(-50, 50, 25, 0, -Math.PI/2, true);
+    ctx.stroke();
+    ctx.beginPath();
+    ctx.arc(100, 0, 25, 0, -Math.PI/2, true);
+    ctx.stroke();
+    @assert pixel 50,25 == 0,255,0,255;
+    @assert pixel 90,10 == 0,255,0,255;
+    @assert pixel 97,1 == 0,255,0,255;
+    @assert pixel 97,2 == 0,255,0,255;
+    @assert pixel 97,3 == 0,255,0,255;
+    @assert pixel 2,48 == 0,255,0,255;
+  expected: green
+
+- name: 2d.path.arc.negative
+  desc: arc() with negative radius throws INDEX_SIZE_ERR
+  code: |
+    @assert throws INDEX_SIZE_ERR ctx.arc(0, 0, -1, 0, 0, true);
+    var path = new Path2D();
+    @assert throws INDEX_SIZE_ERR path.arc(10, 10, -5, 0, 1, false);
+
+- name: 2d.path.arc.zeroradius
+  desc: arc() with zero radius draws a line to the start point
+  code: |
+    ctx.fillStyle = '#f00'
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.lineWidth = 50;
+    ctx.strokeStyle = '#0f0';
+    ctx.beginPath();
+    ctx.moveTo(0, 25);
+    ctx.arc(200, 25, 0, 0, Math.PI, true);
+    ctx.stroke();
+    @assert pixel 50,25 == 0,255,0,255;
+  expected: green
+
+- name: 2d.path.arc.scale.1
+  desc: Non-uniformly scaled arcs are the right shape
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.scale(2, 0.5);
+    ctx.fillStyle = '#0f0';
+    ctx.beginPath();
+    ctx.arc(25, 50, 56, 0, 2*Math.PI, false);
+    ctx.fill();
+    ctx.fillStyle = '#f00';
+    ctx.beginPath();
+    ctx.moveTo(-25, 50);
+    ctx.arc(-25, 50, 24, 0, 2*Math.PI, false);
+    ctx.moveTo(75, 50);
+    ctx.arc(75, 50, 24, 0, 2*Math.PI, false);
+    ctx.moveTo(25, -25);
+    ctx.arc(25, -25, 24, 0, 2*Math.PI, false);
+    ctx.moveTo(25, 125);
+    ctx.arc(25, 125, 24, 0, 2*Math.PI, false);
+    ctx.fill();
+
+    @assert pixel 0,0 == 0,255,0,255;
+    @assert pixel 50,0 == 0,255,0,255;
+    @assert pixel 99,0 == 0,255,0,255;
+    @assert pixel 0,25 == 0,255,0,255;
+    @assert pixel 50,25 == 0,255,0,255;
+    @assert pixel 99,25 == 0,255,0,255;
+    @assert pixel 0,49 == 0,255,0,255;
+    @assert pixel 50,49 == 0,255,0,255;
+    @assert pixel 99,49 == 0,255,0,255;
+  expected: green
+
+- name: 2d.path.arc.scale.2
+  desc: Highly scaled arcs are the right shape
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.scale(100, 100);
+    ctx.strokeStyle = '#0f0';
+    ctx.lineWidth = 1.2;
+    ctx.beginPath();
+    ctx.arc(0, 0, 0.6, 0, Math.PI/2, false);
+    ctx.stroke();
+
+    @assert pixel 1,1 == 0,255,0,255;
+    @assert pixel 50,1 == 0,255,0,255;
+    @assert pixel 98,1 == 0,255,0,255;
+    @assert pixel 1,25 == 0,255,0,255;
+    @assert pixel 50,25 == 0,255,0,255;
+    @assert pixel 98,25 == 0,255,0,255;
+    @assert pixel 1,48 == 0,255,0,255;
+    @assert pixel 50,48 == 0,255,0,255;
+    @assert pixel 98,48 == 0,255,0,255;
+  expected: green
+
+- name: 2d.path.arc.nonfinite
+  desc: arc() with Infinity/NaN is ignored
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.moveTo(0, 0);
+    ctx.lineTo(100, 0);
+    @nonfinite ctx.arc(<0 Infinity -Infinity NaN>, <0 Infinity -Infinity NaN>, <50 Infinity -Infinity NaN>, <0 Infinity -Infinity NaN>, <2*Math.PI Infinity -Infinity NaN>, );
+    ctx.lineTo(100, 50);
+    ctx.lineTo(0, 50);
+    ctx.fillStyle = '#0f0';
+    ctx.fill();
+    @assert pixel 50,25 == 0,255,0,255;
+    @assert pixel 90,45 == 0,255,0,255;
+  expected: green
+
+
+- name: 2d.path.rect.basic
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.fillStyle = '#0f0';
+    ctx.rect(0, 0, 100, 50);
+    ctx.fill();
+    @assert pixel 50,25 == 0,255,0,255;
+  expected: green
+
+- name: 2d.path.rect.newsubpath
+  code: |
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.beginPath();
+    ctx.strokeStyle = '#f00';
+    ctx.lineWidth = 50;
+    ctx.moveTo(-100, 25);
+    ctx.lineTo(-50, 25);
+    ctx.rect(200, 25, 1, 1);
+    ctx.stroke();
+    @assert pixel 50,25 == 0,255,0,255;
+  expected: green
+
+- name: 2d.path.rect.closed
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.strokeStyle = '#0f0';
+    ctx.lineWidth = 200;
+    ctx.lineJoin = 'miter';
+    ctx.rect(100, 50, 100, 100);
+    ctx.stroke();
+    @assert pixel 50,25 == 0,255,0,255;
+  expected: green
+
+- name: 2d.path.rect.end.1
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.strokeStyle = '#0f0';
+    ctx.lineWidth = 100;
+    ctx.rect(200, 100, 400, 1000);
+    ctx.lineTo(-2000, -1000);
+    ctx.stroke();
+    @assert pixel 50,25 == 0,255,0,255;
+  expected: green
+
+- name: 2d.path.rect.end.2
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.strokeStyle = '#0f0';
+    ctx.lineWidth = 450;
+    ctx.lineCap = 'round';
+    ctx.lineJoin = 'bevel';
+    ctx.rect(150, 150, 2000, 2000);
+    ctx.lineTo(160, 160);
+    ctx.stroke();
+    @assert pixel 1,1 == 0,255,0,255;
+    @assert pixel 98,1 == 0,255,0,255;
+    @assert pixel 1,48 == 0,255,0,255;
+    @assert pixel 98,48 == 0,255,0,255;
+  expected: green
+
+- name: 2d.path.rect.zero.1
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.strokeStyle = '#0f0';
+    ctx.lineWidth = 100;
+    ctx.beginPath();
+    ctx.rect(0, 50, 100, 0);
+    ctx.stroke();
+    @assert pixel 50,25 == 0,255,0,255;
+  expected: green
+
+- name: 2d.path.rect.zero.2
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.strokeStyle = '#0f0';
+    ctx.lineWidth = 100;
+    ctx.beginPath();
+    ctx.rect(50, -100, 0, 250);
+    ctx.stroke();
+    @assert pixel 50,25 == 0,255,0,255;
+  expected: green
+
+- name: 2d.path.rect.zero.3
+  code: |
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.strokeStyle = '#f00';
+    ctx.lineWidth = 100;
+    ctx.beginPath();
+    ctx.rect(50, 25, 0, 0);
+    ctx.stroke();
+    @assert pixel 50,25 == 0,255,0,255;
+  expected: green
+
+- name: 2d.path.rect.zero.4
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.strokeStyle = '#0f0';
+    ctx.lineWidth = 50;
+    ctx.rect(100, 25, 0, 0);
+    ctx.lineTo(0, 25);
+    ctx.stroke();
+    @assert pixel 50,25 == 0,255,0,255;
+  expected: green
+
+- name: 2d.path.rect.zero.5
+  code: |
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.strokeStyle = '#f00';
+    ctx.lineWidth = 50;
+    ctx.moveTo(0, 0);
+    ctx.rect(100, 25, 0, 0);
+    ctx.stroke();
+    @assert pixel 50,25 == 0,255,0,255;
+  expected: green
+
+- name: 2d.path.rect.zero.6
+  #mozilla: { bug: TODO }
+  code: |
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.strokeStyle = '#f00';
+    ctx.lineJoin = 'miter';
+    ctx.miterLimit = 1.5;
+    ctx.lineWidth = 200;
+    ctx.beginPath();
+    ctx.rect(100, 25, 1000, 0);
+    ctx.stroke();
+    @assert pixel 50,25 == 0,255,0,255; @moz-todo
+  expected: green
+
+- name: 2d.path.rect.negative
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.beginPath();
+    ctx.fillStyle = '#0f0';
+    ctx.rect(0, 0, 50, 25);
+    ctx.rect(100, 0, -50, 25);
+    ctx.rect(0, 50, 50, -25);
+    ctx.rect(100, 50, -50, -25);
+    ctx.fill();
+    @assert pixel 25,12 == 0,255,0,255;
+    @assert pixel 75,12 == 0,255,0,255;
+    @assert pixel 25,37 == 0,255,0,255;
+    @assert pixel 75,37 == 0,255,0,255;
+
+- name: 2d.path.rect.winding
+  code: |
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.beginPath();
+    ctx.fillStyle = '#f00';
+    ctx.rect(0, 0, 50, 50);
+    ctx.rect(100, 50, -50, -50);
+    ctx.rect(0, 25, 100, -25);
+    ctx.rect(100, 25, -100, 25);
+    ctx.fill();
+    @assert pixel 25,12 == 0,255,0,255;
+    @assert pixel 75,12 == 0,255,0,255;
+    @assert pixel 25,37 == 0,255,0,255;
+    @assert pixel 75,37 == 0,255,0,255;
+
+- name: 2d.path.rect.selfintersect
+  #mozilla: { bug: TODO }
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.strokeStyle = '#0f0';
+    ctx.lineWidth = 90;
+    ctx.beginPath();
+    ctx.rect(45, 20, 10, 10);
+    ctx.stroke();
+    @assert pixel 50,25 == 0,255,0,255; @moz-todo
+  expected: green
+
+- name: 2d.path.rect.nonfinite
+  desc: rect() with Infinity/NaN is ignored
+  code: |
+    ctx.moveTo(0, 0);
+    ctx.lineTo(100, 0);
+    @nonfinite ctx.rect(<0 Infinity -Infinity NaN>, <50 Infinity -Infinity NaN>, <1 Infinity -Infinity NaN>, <1 Infinity -Infinity NaN>);
+    ctx.lineTo(100, 50);
+    ctx.lineTo(0, 50);
+    ctx.fillStyle = '#0f0';
+    ctx.fill();
+    @assert pixel 50,25 == 0,255,0,255;
+    @assert pixel 90,45 == 0,255,0,255;
+  expected: green
+
+- name: 2d.path.roundrect.newsubpath
+  code: |
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.beginPath();
+    ctx.strokeStyle = '#f00';
+    ctx.lineWidth = 50;
+    ctx.moveTo(-100, 25);
+    ctx.lineTo(-50, 25);
+    ctx.roundRect(200, 25, 1, 1, [0]);
+    ctx.stroke();
+    @assert pixel 50,25 == 0,255,0,255;
+  expected: green
+
+- name: 2d.path.roundrect.closed
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.strokeStyle = '#0f0';
+    ctx.lineWidth = 200;
+    ctx.lineJoin = 'miter';
+    ctx.roundRect(100, 50, 100, 100, [0]);
+    ctx.stroke();
+    @assert pixel 50,25 == 0,255,0,255;
+  expected: green
+
+- name: 2d.path.roundrect.end.1
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.strokeStyle = '#0f0';
+    ctx.lineWidth = 100;
+    ctx.roundRect(200, 100, 400, 1000, [0]);
+    ctx.lineTo(-2000, -1000);
+    ctx.stroke();
+    @assert pixel 50,25 == 0,255,0,255;
+  expected: green
+
+- name: 2d.path.roundrect.end.2
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.strokeStyle = '#0f0';
+    ctx.lineWidth = 450;
+    ctx.lineCap = 'round';
+    ctx.lineJoin = 'bevel';
+    ctx.roundRect(150, 150, 2000, 2000, [0]);
+    ctx.lineTo(160, 160);
+    ctx.stroke();
+    @assert pixel 1,1 == 0,255,0,255;
+    @assert pixel 98,1 == 0,255,0,255;
+    @assert pixel 1,48 == 0,255,0,255;
+    @assert pixel 98,48 == 0,255,0,255;
+  expected: green
+
+- name: 2d.path.roundrect.end.3
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.strokeStyle = '#0f0';
+    ctx.lineWidth = 100;
+    ctx.roundRect(101, 51, 2000, 2000, [500, 500, 500, 500]);
+    ctx.lineTo(-1, -1);
+    ctx.stroke();
+    @assert pixel 1,1 == 0,255,0,255;
+    @assert pixel 98,1 == 0,255,0,255;
+    @assert pixel 1,48 == 0,255,0,255;
+    @assert pixel 98,48 == 0,255,0,255;
+  expected: green
+
+- name: 2d.path.roundrect.end.4
+  code: |
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.strokeStyle = '#f00';
+    ctx.lineWidth = 10;
+    ctx.roundRect(-1, -1, 2000, 2000, [1000, 1000, 1000, 1000]);
+    ctx.lineTo(-150, -150);
+    ctx.stroke();
+    @assert pixel 1,1 == 0,255,0,255;
+    @assert pixel 98,1 == 0,255,0,255;
+    @assert pixel 1,48 == 0,255,0,255;
+    @assert pixel 98,48 == 0,255,0,255;
+  expected: green
+
+- name: 2d.path.roundrect.zero.1
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.strokeStyle = '#0f0';
+    ctx.lineWidth = 100;
+    ctx.beginPath();
+    ctx.roundRect(0, 50, 100, 0, [0]);
+    ctx.stroke();
+    @assert pixel 50,25 == 0,255,0,255;
+  expected: green
+
+- name: 2d.path.roundrect.zero.2
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.strokeStyle = '#0f0';
+    ctx.lineWidth = 100;
+    ctx.beginPath();
+    ctx.roundRect(50, -100, 0, 250, [0]);
+    ctx.stroke();
+    @assert pixel 50,25 == 0,255,0,255;
+  expected: green
+
+- name: 2d.path.roundrect.zero.3
+  code: |
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.strokeStyle = '#f00';
+    ctx.lineWidth = 100;
+    ctx.beginPath();
+    ctx.roundRect(50, 25, 0, 0, [0]);
+    ctx.stroke();
+    @assert pixel 50,25 == 0,255,0,255;
+  expected: green
+
+- name: 2d.path.roundrect.zero.4
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.strokeStyle = '#0f0';
+    ctx.lineWidth = 50;
+    ctx.roundRect(100, 25, 0, 0, [0]);
+    ctx.lineTo(0, 25);
+    ctx.stroke();
+    @assert pixel 50,25 == 0,255,0,255;
+  expected: green
+
+- name: 2d.path.roundrect.zero.5
+  code: |
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.strokeStyle = '#f00';
+    ctx.lineWidth = 50;
+    ctx.moveTo(0, 0);
+    ctx.roundRect(100, 25, 0, 0, [0]);
+    ctx.stroke();
+    @assert pixel 50,25 == 0,255,0,255;
+  expected: green
+
+- name: 2d.path.roundrect.zero.6
+  code: |
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.strokeStyle = '#f00';
+    ctx.lineJoin = 'miter';
+    ctx.miterLimit = 1.5;
+    ctx.lineWidth = 200;
+    ctx.beginPath();
+    ctx.roundRect(100, 25, 1000, 0, [0]);
+    ctx.stroke();
+    @assert pixel 50,25 == 0,255,0,255;
+  expected: green
+
+- name: 2d.path.roundrect.negative
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.beginPath();
+    ctx.fillStyle = '#0f0';
+    ctx.roundRect(0, 0, 50, 25, [10, 0, 0, 0]);
+    ctx.roundRect(100, 0, -50, 25, [10, 0, 0, 0]);
+    ctx.roundRect(0, 50, 50, -25, [10, 0, 0, 0]);
+    ctx.roundRect(100, 50, -50, -25, [10, 0, 0, 0]);
+    ctx.fill();
+    // All rects drawn
+    @assert pixel 25,12 == 0,255,0,255;
+    @assert pixel 75,12 == 0,255,0,255;
+    @assert pixel 25,37 == 0,255,0,255;
+    @assert pixel 75,37 == 0,255,0,255;
+    // Correct corners are rounded.
+    @assert pixel 1,1 == 255,0,0,255;
+    @assert pixel 98,1 == 255,0,0,255;
+    @assert pixel 1,48 == 255,0,0,255;
+    @assert pixel 98,48 == 255,0,0,255;
+
+- name: 2d.path.roundrect.winding
+  code: |
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.beginPath();
+    ctx.fillStyle = '#f00';
+    ctx.roundRect(0, 0, 50, 50, [0]);
+    ctx.roundRect(100, 50, -50, -50, [0]);
+    ctx.roundRect(0, 25, 100, -25, [0]);
+    ctx.roundRect(100, 25, -100, 25, [0]);
+    ctx.fill();
+    @assert pixel 25,12 == 0,255,0,255;
+    @assert pixel 75,12 == 0,255,0,255;
+    @assert pixel 25,37 == 0,255,0,255;
+    @assert pixel 75,37 == 0,255,0,255;
+
+- name: 2d.path.roundrect.selfintersect
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.roundRect(0, 0, 100, 50, [0]);
+    ctx.strokeStyle = '#0f0';
+    ctx.lineWidth = 90;
+    ctx.beginPath();
+    ctx.roundRect(45, 20, 10, 10, [0]);
+    ctx.stroke();
+    @assert pixel 50,25 == 0,255,0,255;
+  expected: green
+
+- name: 2d.path.roundrect.nonfinite
+  desc: roundRect() with Infinity/NaN is ignored
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50)
+    ctx.moveTo(0, 0);
+    ctx.lineTo(100, 0);
+    @nonfinite ctx.roundRect(<0 Infinity -Infinity NaN>, <50 Infinity -Infinity NaN>, <1 Infinity -Infinity NaN>, <1 Infinity -Infinity NaN>, <[0] [Infinity] [-Infinity] [NaN] [Infinity,0] [-Infinity,0] [NaN,0] [0,Infinity] [0,-Infinity] [0,NaN] [Infinity,0,0] [-Infinity,0,0] [NaN,0,0] [0,Infinity,0] [0,-Infinity,0] [0,NaN,0] [0,0,Infinity] [0,0,-Infinity] [0,0,NaN] [Infinity,0,0,0] [-Infinity,0,0,0] [NaN,0,0,0] [0,Infinity,0,0] [0,-Infinity,0,0] [0,NaN,0,0] [0,0,Infinity,0] [0,0,-Infinity,0] [0,0,NaN,0] [0,0,0,Infinity] [0,0,0,-Infinity] [0,0,0,NaN]>);
+    ctx.roundRect(0, 0, 100, 100, [new DOMPoint(10, Infinity)]);
+    ctx.roundRect(0, 0, 100, 100, [new DOMPoint(10, -Infinity)]);
+    ctx.roundRect(0, 0, 100, 100, [new DOMPoint(10, NaN)]);
+    ctx.roundRect(0, 0, 100, 100, [new DOMPoint(Infinity, 10)]);
+    ctx.roundRect(0, 0, 100, 100, [new DOMPoint(-Infinity, 10)]);
+    ctx.roundRect(0, 0, 100, 100, [new DOMPoint(NaN, 10)]);
+    ctx.roundRect(0, 0, 100, 100, [{x: 10, y: Infinity}]);
+    ctx.roundRect(0, 0, 100, 100, [{x: 10, y: -Infinity}]);
+    ctx.roundRect(0, 0, 100, 100, [{x: 10, y: NaN}]);
+    ctx.roundRect(0, 0, 100, 100, [{x: Infinity, y: 10}]);
+    ctx.roundRect(0, 0, 100, 100, [{x: -Infinity, y: 10}]);
+    ctx.roundRect(0, 0, 100, 100, [{x: NaN, y: 10}]);
+    ctx.lineTo(100, 50);
+    ctx.lineTo(0, 50);
+    ctx.fillStyle = '#0f0';
+    ctx.fill();
+    @assert pixel 50,25 == 0,255,0,255;
+    @assert pixel 90,45 == 0,255,0,255;
+  expected: green
+
+- name: 2d.path.roundrect.4.radii.1.double
+  desc: Verify that when four radii are given to roundRect(), the first radius, specified as a double, applies to the top-left corner.
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.roundRect(0, 0, 100, 50, [20, 0, 0, 0]);
+    ctx.fillStyle = '#0f0';
+    ctx.fill();
+    @assert pixel 1,1 == 255,0,0,255;
+    @assert pixel 98,1 == 0,255,0,255;
+    @assert pixel 98,48 == 0,255,0,255;
+    @assert pixel 1,48 == 0,255,0,255;
+
+- name: 2d.path.roundrect.4.radii.1.dompoint
+  desc: Verify that when four radii are given to roundRect(), the first radius, specified as a DOMPoint, applies to the top-left corner.
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.roundRect(0, 0, 100, 50, [new DOMPoint(40, 20), 0, 0, 0]);
+    ctx.fillStyle = '#0f0';
+    ctx.fill();
+
+    // top-left corner
+    @assert pixel 20,1 == 255,0,0,255;
+    @assert pixel 41,1 == 0,255,0,255;
+    @assert pixel 1,10 == 255,0,0,255;
+    @assert pixel 1,21 == 0,255,0,255;
+
+    // other corners
+    @assert pixel 98,1 == 0,255,0,255;
+    @assert pixel 98,48 == 0,255,0,255;
+    @assert pixel 1,48 == 0,255,0,255;
+
+- name: 2d.path.roundrect.4.radii.1.dompointinit
+  desc: Verify that when four radii are given to roundRect(), the first radius, specified as a DOMPointInit, applies to the top-left corner.
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.roundRect(0, 0, 100, 50, [{x: 40, y: 20}, 0, 0, 0]);
+    ctx.fillStyle = '#0f0';
+    ctx.fill();
+
+    // top-left corner
+    @assert pixel 20,1 == 255,0,0,255;
+    @assert pixel 41,1 == 0,255,0,255;
+    @assert pixel 1,10 == 255,0,0,255;
+    @assert pixel 1,21 == 0,255,0,255;
+
+    // other corners
+    @assert pixel 98,1 == 0,255,0,255;
+    @assert pixel 98,48 == 0,255,0,255;
+    @assert pixel 1,48 == 0,255,0,255;
+
+- name: 2d.path.roundrect.4.radii.2.double
+  desc: Verify that when four radii are given to roundRect(), the second radius, specified as a double, applies to the top-right corner.
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.roundRect(0, 0, 100, 50, [0, 20, 0, 0]);
+    ctx.fillStyle = '#0f0';
+    ctx.fill();
+    @assert pixel 1,1 == 0,255,0,255;
+    @assert pixel 98,1 == 255,0,0,255;
+    @assert pixel 98,48 == 0,255,0,255;
+    @assert pixel 1,48 == 0,255,0,255;
+
+- name: 2d.path.roundrect.4.radii.2.dompoint
+  desc: Verify that when four radii are given to roundRect(), the second radius, specified as a DOMPoint, applies to the top-right corner.
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.roundRect(0, 0, 100, 50, [0, new DOMPoint(40, 20), 0, 0]);
+    ctx.fillStyle = '#0f0';
+    ctx.fill();
+
+    // top-right corner
+    @assert pixel 79,1 == 255,0,0,255;
+    @assert pixel 58,1 == 0,255,0,255;
+    @assert pixel 98,10 == 255,0,0,255;
+    @assert pixel 98,21 == 0,255,0,255;
+
+    // other corners
+    @assert pixel 1,1 == 0,255,0,255;
+    @assert pixel 98,48 == 0,255,0,255;
+    @assert pixel 1,48 == 0,255,0,255;
+
+- name: 2d.path.roundrect.4.radii.2.dompointinit
+  desc: Verify that when four radii are given to roundRect(), the second radius, specified as a DOMPointInit, applies to the top-right corner.
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.roundRect(0, 0, 100, 50, [0, {x: 40, y: 20}, 0, 0]);
+    ctx.fillStyle = '#0f0';
+    ctx.fill();
+
+    // top-right corner
+    @assert pixel 79,1 == 255,0,0,255;
+    @assert pixel 58,1 == 0,255,0,255;
+    @assert pixel 98,10 == 255,0,0,255;
+    @assert pixel 98,21 == 0,255,0,255;
+
+    // other corners
+    @assert pixel 1,1 == 0,255,0,255;
+    @assert pixel 98,48 == 0,255,0,255;
+    @assert pixel 1,48 == 0,255,0,255;
+
+- name: 2d.path.roundrect.4.radii.3.double
+  desc: Verify that when four radii are given to roundRect(), the third radius, specified as a double, applies to the bottom-right corner.
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.roundRect(0, 0, 100, 50, [0, 0, 20, 0]);
+    ctx.fillStyle = '#0f0';
+    ctx.fill();
+    @assert pixel 1,1 == 0,255,0,255;
+    @assert pixel 98,1 == 0,255,0,255;
+    @assert pixel 98,48 == 255,0,0,255;
+    @assert pixel 1,48 == 0,255,0,255;
+
+- name: 2d.path.roundrect.4.radii.3.dompoint
+  desc: Verify that when four radii are given to roundRect(), the third radius, specified as a DOMPoint, applies to the bottom-right corner.
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.roundRect(0, 0, 100, 50, [0, 0, new DOMPoint(40, 20), 0]);
+    ctx.fillStyle = '#0f0';
+    ctx.fill();
+
+    // bottom-right corner
+    @assert pixel 79,48 == 255,0,0,255;
+    @assert pixel 58,48 == 0,255,0,255;
+    @assert pixel 98,39 == 255,0,0,255;
+    @assert pixel 98,28 == 0,255,0,255;
+
+    // other corners
+    @assert pixel 1,1 == 0,255,0,255;
+    @assert pixel 98,1 == 0,255,0,255;
+    @assert pixel 1,48 == 0,255,0,255;
+
+- name: 2d.path.roundrect.4.radii.3.dompointinit
+  desc: Verify that when four radii are given to roundRect(), the third radius, specified as a DOMPointInit, applies to the bottom-right corner.
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.roundRect(0, 0, 100, 50, [0, 0, {x: 40, y: 20}, 0]);
+    ctx.fillStyle = '#0f0';
+    ctx.fill();
+
+    // bottom-right corner
+    @assert pixel 79,48 == 255,0,0,255;
+    @assert pixel 58,48 == 0,255,0,255;
+    @assert pixel 98,39 == 255,0,0,255;
+    @assert pixel 98,28 == 0,255,0,255;
+
+    // other corners
+    @assert pixel 1,1 == 0,255,0,255;
+    @assert pixel 98,1 == 0,255,0,255;
+    @assert pixel 1,48 == 0,255,0,255;
+
+- name: 2d.path.roundrect.4.radii.4.double
+  desc: Verify that when four radii are given to roundRect(), the fourth radius, specified as a double, applies to the bottom-left corner.
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.roundRect(0, 0, 100, 50, [0, 0, 0, 20]);
+    ctx.fillStyle = '#0f0';
+    ctx.fill();
+    @assert pixel 1,1 == 0,255,0,255;
+    @assert pixel 98,1 == 0,255,0,255;
+    @assert pixel 98,48 == 0,255,0,255;
+    @assert pixel 1,48 == 255,0,0,255;
+
+- name: 2d.path.roundrect.4.radii.4.dompoint
+  desc: Verify that when four radii are given to roundRect(), the fourth radius, specified as a DOMPoint, applies to the bottom-left corner.
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.roundRect(0, 0, 100, 50, [0, 0, 0, new DOMPoint(40, 20)]);
+    ctx.fillStyle = '#0f0';
+    ctx.fill();
+
+    // bottom-left corner
+    @assert pixel 20,48 == 255,0,0,255;
+    @assert pixel 41,48 == 0,255,0,255;
+    @assert pixel 1,39 == 255,0,0,255;
+    @assert pixel 1,28 == 0,255,0,255;
+
+    // other corners
+    @assert pixel 1,1 == 0,255,0,255;
+    @assert pixel 98,1 == 0,255,0,255;
+    @assert pixel 98,48 == 0,255,0,255;
+
+- name: 2d.path.roundrect.4.radii.4.dompointinit
+  desc: Verify that when four radii are given to roundRect(), the fourth radius, specified as a DOMPointInit, applies to the bottom-left corner.
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.roundRect(0, 0, 100, 50, [0, 0, 0, {x: 40, y: 20}]);
+    ctx.fillStyle = '#0f0';
+    ctx.fill();
+
+    // bottom-left corner
+    @assert pixel 20,48 == 255,0,0,255;
+    @assert pixel 41,48 == 0,255,0,255;
+    @assert pixel 1,39 == 255,0,0,255;
+    @assert pixel 1,28 == 0,255,0,255;
+
+    // other corners
+    @assert pixel 1,1 == 0,255,0,255;
+    @assert pixel 98,1 == 0,255,0,255;
+    @assert pixel 98,48 == 0,255,0,255;
+
+- name: 2d.path.roundrect.3.radii.1.double
+  desc: Verify that when three radii are given to roundRect(), the first radius, specified as a double, applies to the top-left corner.
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.roundRect(0, 0, 100, 50, [20, 0, 0]);
+    ctx.fillStyle = '#0f0';
+    ctx.fill();
+    @assert pixel 1,1 == 255,0,0,255;
+    @assert pixel 98,1 == 0,255,0,255;
+    @assert pixel 98,48 == 0,255,0,255;
+    @assert pixel 1,48 == 0,255,0,255;
+
+- name: 2d.path.roundrect.3.radii.1.dompoint
+  desc: Verify that when three radii are given to roundRect(), the first radius, specified as a DOMPoint, applies to the top-left corner.
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.roundRect(0, 0, 100, 50, [new DOMPoint(40, 20), 0, 0]);
+    ctx.fillStyle = '#0f0';
+    ctx.fill();
+
+    // top-left corner
+    @assert pixel 20,1 == 255,0,0,255;
+    @assert pixel 41,1 == 0,255,0,255;
+    @assert pixel 1,10 == 255,0,0,255;
+    @assert pixel 1,21 == 0,255,0,255;
+
+    // other corners
+    @assert pixel 98,1 == 0,255,0,255;
+    @assert pixel 98,48 == 0,255,0,255;
+    @assert pixel 1,48 == 0,255,0,255;
+
+- name: 2d.path.roundrect.3.radii.1.dompointinit
+  desc: Verify that when three radii are given to roundRect(), the first radius, specified as a DOMPointInit, applies to the top-left corner.
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.roundRect(0, 0, 100, 50, [{x: 40, y: 20}, 0, 0]);
+    ctx.fillStyle = '#0f0';
+    ctx.fill();
+
+    // top-left corner
+    @assert pixel 20,1 == 255,0,0,255;
+    @assert pixel 41,1 == 0,255,0,255;
+    @assert pixel 1,10 == 255,0,0,255;
+    @assert pixel 1,21 == 0,255,0,255;
+
+    // other corners
+    @assert pixel 98,1 == 0,255,0,255;
+    @assert pixel 98,48 == 0,255,0,255;
+    @assert pixel 1,48 == 0,255,0,255;
+
+- name: 2d.path.roundrect.3.radii.2.double
+  desc: Verify that when three radii are given to roundRect(), the second radius, specified as a double, applies to the top-right and bottom-left corners.
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.roundRect(0, 0, 100, 50, [0, 20, 0]);
+    ctx.fillStyle = '#0f0';
+    ctx.fill();
+    @assert pixel 1,1 == 0,255,0,255;
+    @assert pixel 98,1 == 255,0,0,255;
+    @assert pixel 98,48 == 0,255,0,255;
+    @assert pixel 1,48 == 255,0,0,255;
+
+- name: 2d.path.roundrect.3.radii.2.dompoint
+  desc: Verify that when three radii are given to roundRect(), the second radius, specified as a DOMPoint, applies to the top-right and bottom-left corners.
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.roundRect(0, 0, 100, 50, [0, new DOMPoint(40, 20), 0]);
+    ctx.fillStyle = '#0f0';
+    ctx.fill();
+
+    // top-right corner
+    @assert pixel 79,1 == 255,0,0,255;
+    @assert pixel 58,1 == 0,255,0,255;
+    @assert pixel 98,10 == 255,0,0,255;
+    @assert pixel 98,21 == 0,255,0,255;
+
+    // bottom-left corner
+    @assert pixel 20,48 == 255,0,0,255;
+    @assert pixel 41,48 == 0,255,0,255;
+    @assert pixel 1,39 == 255,0,0,255;
+    @assert pixel 1,28 == 0,255,0,255;
+
+    // other corners
+    @assert pixel 1,1 == 0,255,0,255;
+    @assert pixel 98,48 == 0,255,0,255;
+
+- name: 2d.path.roundrect.3.radii.2.dompointinit
+  desc: Verify that when three radii are given to roundRect(), the second radius, specified as a DOMPoint, applies to the top-right and bottom-left corners.
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.roundRect(0, 0, 100, 50, [0, {x: 40, y: 20}, 0]);
+    ctx.fillStyle = '#0f0';
+    ctx.fill();
+
+    // top-right corner
+    @assert pixel 79,1 == 255,0,0,255;
+    @assert pixel 58,1 == 0,255,0,255;
+    @assert pixel 98,10 == 255,0,0,255;
+    @assert pixel 98,21 == 0,255,0,255;
+
+    // bottom-left corner
+    @assert pixel 20,48 == 255,0,0,255;
+    @assert pixel 41,48 == 0,255,0,255;
+    @assert pixel 1,39 == 255,0,0,255;
+    @assert pixel 1,28 == 0,255,0,255;
+
+    // other corners
+    @assert pixel 1,1 == 0,255,0,255;
+    @assert pixel 98,48 == 0,255,0,255;
+
+- name: 2d.path.roundrect.3.radii.3.double
+  desc: Verify that when three radii are given to roundRect(), the third radius, specified as a double, applies to the bottom-right corner.
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.roundRect(0, 0, 100, 50, [0, 0, 20]);
+    ctx.fillStyle = '#0f0';
+    ctx.fill();
+    @assert pixel 1,1 == 0,255,0,255;
+    @assert pixel 98,1 == 0,255,0,255;
+    @assert pixel 98,48 == 255,0,0,255;
+    @assert pixel 1,48 == 0,255,0,255;
+
+- name: 2d.path.roundrect.3.radii.3.dompoint
+  desc: Verify that when three radii are given to roundRect(), the third radius, specified as a DOMPoint, applies to the bottom-right corner.
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.roundRect(0, 0, 100, 50, [0, 0, new DOMPoint(40, 20)]);
+    ctx.fillStyle = '#0f0';
+    ctx.fill();
+
+    // bottom-right corner
+    @assert pixel 79,48 == 255,0,0,255;
+    @assert pixel 58,48 == 0,255,0,255;
+    @assert pixel 98,39 == 255,0,0,255;
+    @assert pixel 98,28 == 0,255,0,255;
+
+    // other corners
+    @assert pixel 1,1 == 0,255,0,255;
+    @assert pixel 98,1 == 0,255,0,255;
+    @assert pixel 1,48 == 0,255,0,255;
+
+- name: 2d.path.roundrect.3.radii.3.dompointinit
+  desc: Verify that when three radii are given to roundRect(), the third radius, specified as a DOMPointInit, applies to the bottom-right corner.
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.roundRect(0, 0, 100, 50, [0, 0, {x: 40, y: 20}]);
+    ctx.fillStyle = '#0f0';
+    ctx.fill();
+
+    // bottom-right corner
+    @assert pixel 79,48 == 255,0,0,255;
+    @assert pixel 58,48 == 0,255,0,255;
+    @assert pixel 98,39 == 255,0,0,255;
+    @assert pixel 98,28 == 0,255,0,255;
+
+    // other corners
+    @assert pixel 1,1 == 0,255,0,255;
+    @assert pixel 98,1 == 0,255,0,255;
+    @assert pixel 1,48 == 0,255,0,255;
+
+- name: 2d.path.roundrect.2.radii.1.double
+  desc: Verify that when two radii are given to roundRect(), the first radius, specified as a double, applies to the top-left and bottom-right corners.
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.roundRect(0, 0, 100, 50, [20, 0]);
+    ctx.fillStyle = '#0f0';
+    ctx.fill();
+    @assert pixel 1,1 == 255,0,0,255;
+    @assert pixel 98,1 == 0,255,0,255;
+    @assert pixel 98,48 == 255,0,0,255;
+    @assert pixel 1,48 == 0,255,0,255;
+
+- name: 2d.path.roundrect.2.radii.1.dompoint
+  desc: Verify that when two radii are given to roundRect(), the first radius, specified as a DOMPoint, applies to the top-left and bottom-right corners.
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.roundRect(0, 0, 100, 50, [new DOMPoint(40, 20), 0]);
+    ctx.fillStyle = '#0f0';
+    ctx.fill();
+
+    // top-left corner
+    @assert pixel 20,1 == 255,0,0,255;
+    @assert pixel 41,1 == 0,255,0,255;
+    @assert pixel 1,10 == 255,0,0,255;
+    @assert pixel 1,21 == 0,255,0,255;
+
+    // bottom-right corner
+    @assert pixel 79,48 == 255,0,0,255;
+    @assert pixel 58,48 == 0,255,0,255;
+    @assert pixel 98,39 == 255,0,0,255;
+    @assert pixel 98,28 == 0,255,0,255;
+
+    // other corners
+    @assert pixel 98,1 == 0,255,0,255;
+    @assert pixel 1,48 == 0,255,0,255;
+
+- name: 2d.path.roundrect.2.radii.1.dompointinit
+  desc: Verify that when two radii are given to roundRect(), the first radius, specified as a DOMPointInit, applies to the top-left and bottom-right corners.
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.roundRect(0, 0, 100, 50, [{x: 40, y: 20}, 0]);
+    ctx.fillStyle = '#0f0';
+    ctx.fill();
+
+    // top-left corner
+    @assert pixel 20,1 == 255,0,0,255;
+    @assert pixel 41,1 == 0,255,0,255;
+    @assert pixel 1,10 == 255,0,0,255;
+    @assert pixel 1,21 == 0,255,0,255;
+
+    // bottom-right corner
+    @assert pixel 79,48 == 255,0,0,255;
+    @assert pixel 58,48 == 0,255,0,255;
+    @assert pixel 98,39 == 255,0,0,255;
+    @assert pixel 98,28 == 0,255,0,255;
+
+    // other corners
+    @assert pixel 98,1 == 0,255,0,255;
+    @assert pixel 1,48 == 0,255,0,255;
+
+- name: 2d.path.roundrect.2.radii.2.double
+  desc: Verify that when two radii are given to roundRect(), the second radius, specified as a double, applies to the top-right and bottom-left corners.
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.roundRect(0, 0, 100, 50, [0, 20]);
+    ctx.fillStyle = '#0f0';
+    ctx.fill();
+    @assert pixel 1,1 == 0,255,0,255;
+    @assert pixel 98,1 == 255,0,0,255;
+    @assert pixel 98,48 == 0,255,0,255;
+    @assert pixel 1,48 == 255,0,0,255;
+
+- name: 2d.path.roundrect.2.radii.2.dompoint
+  desc: Verify that when two radii are given to roundRect(), the second radius, specified as a DOMPoint, applies to the top-right and bottom-left corners.
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.roundRect(0, 0, 100, 50, [0, new DOMPoint(40, 20)]);
+    ctx.fillStyle = '#0f0';
+    ctx.fill();
+
+    // top-right corner
+    @assert pixel 79,1 == 255,0,0,255;
+    @assert pixel 58,1 == 0,255,0,255;
+    @assert pixel 98,10 == 255,0,0,255;
+    @assert pixel 98,21 == 0,255,0,255;
+
+    // bottom-left corner
+    @assert pixel 20,48 == 255,0,0,255;
+    @assert pixel 41,48 == 0,255,0,255;
+    @assert pixel 1,39 == 255,0,0,255;
+    @assert pixel 1,28 == 0,255,0,255;
+
+    // other corners
+    @assert pixel 1,1 == 0,255,0,255;
+    @assert pixel 98,48 == 0,255,0,255;
+
+- name: 2d.path.roundrect.2.radii.2.dompointinit
+  desc: Verify that when two radii are given to roundRect(), the second radius, specified as a DOMPointInit, applies to the top-right and bottom-left corners.
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.roundRect(0, 0, 100, 50, [0, {x: 40, y: 20}]);
+    ctx.fillStyle = '#0f0';
+    ctx.fill();
+
+    // top-right corner
+    @assert pixel 79,1 == 255,0,0,255;
+    @assert pixel 58,1 == 0,255,0,255;
+    @assert pixel 98,10 == 255,0,0,255;
+    @assert pixel 98,21 == 0,255,0,255;
+
+    // bottom-left corner
+    @assert pixel 20,48 == 255,0,0,255;
+    @assert pixel 41,48 == 0,255,0,255;
+    @assert pixel 1,39 == 255,0,0,255;
+    @assert pixel 1,28 == 0,255,0,255;
+
+    // other corners
+    @assert pixel 1,1 == 0,255,0,255;
+    @assert pixel 98,48 == 0,255,0,255;
+
+- name: 2d.path.roundrect.1.radius.double
+  desc: Verify that when one radius is given to roundRect(), specified as a double, it applies to all corners.
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.roundRect(0, 0, 100, 50, [20]);
+    ctx.fillStyle = '#0f0';
+    ctx.fill();
+    @assert pixel 1,1 == 255,0,0,255;
+    @assert pixel 98,1 == 255,0,0,255;
+    @assert pixel 98,48 == 255,0,0,255;
+    @assert pixel 1,48 == 255,0,0,255;
+
+- name: 2d.path.roundrect.1.radius.double.single.argument
+  desc: Verify that when one radius is given to roundRect() as a non-array argument, specified as a double, it applies to all corners.
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.roundRect(0, 0, 100, 50, 20);
+    ctx.fillStyle = '#0f0';
+    ctx.fill();
+    @assert pixel 1,1 == 255,0,0,255;
+    @assert pixel 98,1 == 255,0,0,255;
+    @assert pixel 98,48 == 255,0,0,255;
+    @assert pixel 1,48 == 255,0,0,255;
+
+- name: 2d.path.roundrect.1.radius.dompoint
+  desc: Verify that when one radius is given to roundRect(), specified as a DOMPoint, it applies to all corners.
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.roundRect(0, 0, 100, 50, [new DOMPoint(40, 20)]);
+    ctx.fillStyle = '#0f0';
+    ctx.fill();
+
+    // top-left corner
+    @assert pixel 20,1 == 255,0,0,255;
+    @assert pixel 41,1 == 0,255,0,255;
+    @assert pixel 1,10 == 255,0,0,255;
+    @assert pixel 1,21 == 0,255,0,255;
+
+    // top-right corner
+    @assert pixel 79,1 == 255,0,0,255;
+    @assert pixel 58,1 == 0,255,0,255;
+    @assert pixel 98,10 == 255,0,0,255;
+    @assert pixel 98,21 == 0,255,0,255;
+
+    // bottom-right corner
+    @assert pixel 79,48 == 255,0,0,255;
+    @assert pixel 58,48 == 0,255,0,255;
+    @assert pixel 98,39 == 255,0,0,255;
+    @assert pixel 98,28 == 0,255,0,255;
+
+    // bottom-left corner
+    @assert pixel 20,48 == 255,0,0,255;
+    @assert pixel 41,48 == 0,255,0,255;
+    @assert pixel 1,39 == 255,0,0,255;
+    @assert pixel 1,28 == 0,255,0,255;
+
+- name: 2d.path.roundrect.1.radius.dompoint.single argument
+  desc: Verify that when one radius is given to roundRect() as a non-array argument, specified as a DOMPoint, it applies to all corners.
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.roundRect(0, 0, 100, 50, new DOMPoint(40, 20));
+    ctx.fillStyle = '#0f0';
+    ctx.fill();
+
+    // top-left corner
+    @assert pixel 20,1 == 255,0,0,255;
+    @assert pixel 41,1 == 0,255,0,255;
+    @assert pixel 1,10 == 255,0,0,255;
+    @assert pixel 1,21 == 0,255,0,255;
+
+    // top-right corner
+    @assert pixel 79,1 == 255,0,0,255;
+    @assert pixel 58,1 == 0,255,0,255;
+    @assert pixel 98,10 == 255,0,0,255;
+    @assert pixel 98,21 == 0,255,0,255;
+
+    // bottom-right corner
+    @assert pixel 79,48 == 255,0,0,255;
+    @assert pixel 58,48 == 0,255,0,255;
+    @assert pixel 98,39 == 255,0,0,255;
+    @assert pixel 98,28 == 0,255,0,255;
+
+    // bottom-left corner
+    @assert pixel 20,48 == 255,0,0,255;
+    @assert pixel 41,48 == 0,255,0,255;
+    @assert pixel 1,39 == 255,0,0,255;
+    @assert pixel 1,28 == 0,255,0,255;
+
+- name: 2d.path.roundrect.1.radius.dompointinit
+  desc: Verify that when one radius is given to roundRect(), specified as a DOMPointInit, applies to all corners.
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.roundRect(0, 0, 100, 50, [{x: 40, y: 20}]);
+    ctx.fillStyle = '#0f0';
+    ctx.fill();
+
+    // top-left corner
+    @assert pixel 20,1 == 255,0,0,255;
+    @assert pixel 41,1 == 0,255,0,255;
+    @assert pixel 1,10 == 255,0,0,255;
+    @assert pixel 1,21 == 0,255,0,255;
+
+    // top-right corner
+    @assert pixel 79,1 == 255,0,0,255;
+    @assert pixel 58,1 == 0,255,0,255;
+    @assert pixel 98,10 == 255,0,0,255;
+    @assert pixel 98,21 == 0,255,0,255;
+
+    // bottom-right corner
+    @assert pixel 79,48 == 255,0,0,255;
+    @assert pixel 58,48 == 0,255,0,255;
+    @assert pixel 98,39 == 255,0,0,255;
+    @assert pixel 98,28 == 0,255,0,255;
+
+    // bottom-left corner
+    @assert pixel 20,48 == 255,0,0,255;
+    @assert pixel 41,48 == 0,255,0,255;
+    @assert pixel 1,39 == 255,0,0,255;
+    @assert pixel 1,28 == 0,255,0,255;
+
+- name: 2d.path.roundrect.1.radius.dompointinit.single.argument
+  desc: Verify that when one radius is given to roundRect() as a non-array argument, specified as a DOMPointInit, applies to all corners.
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.roundRect(0, 0, 100, 50, {x: 40, y: 20});
+    ctx.fillStyle = '#0f0';
+    ctx.fill();
+
+    // top-left corner
+    @assert pixel 20,1 == 255,0,0,255;
+    @assert pixel 41,1 == 0,255,0,255;
+    @assert pixel 1,10 == 255,0,0,255;
+    @assert pixel 1,21 == 0,255,0,255;
+
+    // top-right corner
+    @assert pixel 79,1 == 255,0,0,255;
+    @assert pixel 58,1 == 0,255,0,255;
+    @assert pixel 98,10 == 255,0,0,255;
+    @assert pixel 98,21 == 0,255,0,255;
+
+    // bottom-right corner
+    @assert pixel 79,48 == 255,0,0,255;
+    @assert pixel 58,48 == 0,255,0,255;
+    @assert pixel 98,39 == 255,0,0,255;
+    @assert pixel 98,28 == 0,255,0,255;
+
+    // bottom-left corner
+    @assert pixel 20,48 == 255,0,0,255;
+    @assert pixel 41,48 == 0,255,0,255;
+    @assert pixel 1,39 == 255,0,0,255;
+    @assert pixel 1,28 == 0,255,0,255;
+
+- name: 2d.path.roundrect.radius.intersecting.1
+  desc: Check that roundRects with intersecting corner arcs are rendered correctly.
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.roundRect(0, 0, 100, 50, [40, 40, 40, 40]);
+    ctx.fillStyle = '#0f0';
+    ctx.fill();
+    @assert pixel 2,25 == 0,255,0,255;
+    @assert pixel 50,1 == 0,255,0,255;
+    @assert pixel 50,25 == 0,255,0,255;
+    @assert pixel 50,48 == 0,255,0,255;
+    @assert pixel 97,25 == 0,255,0,255;
+    @assert pixel 1,1 == 255,0,0,255;
+    @assert pixel 98,1 == 255,0,0,255;
+    @assert pixel 1,48 == 255,0,0,255;
+    @assert pixel 98,48 == 255,0,0,255;
+
+- name: 2d.path.roundrect.radius.intersecting.2
+  desc: Check that roundRects with intersecting corner arcs are rendered correctly.
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.roundRect(0, 0, 100, 50, [1000, 1000, 1000, 1000]);
+    ctx.fillStyle = '#0f0';
+    ctx.fill();
+    @assert pixel 2,25 == 0,255,0,255;
+    @assert pixel 50,1 == 0,255,0,255;
+    @assert pixel 50,25 == 0,255,0,255;
+    @assert pixel 50,48 == 0,255,0,255;
+    @assert pixel 97,25 == 0,255,0,255;
+    @assert pixel 1,1 == 255,0,0,255;
+    @assert pixel 98,1 == 255,0,0,255;
+    @assert pixel 1,48 == 255,0,0,255;
+    @assert pixel 98,48 == 255,0,0,255;
+
+- name: 2d.path.roundrect.radius.none
+  desc: Check that roundRect throws an RangeError if radii is an empty array.
+  code: |
+    assert_throws_js(RangeError, () => { ctx.roundRect(0, 0, 100, 50, [])});
+
+- name: 2d.path.roundrect.radius.noargument
+  desc: Check that roundRect draws a rectangle when no radii are provided.
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.roundRect(10, 10, 80, 30);
+    ctx.fillStyle = '#0f0';
+    ctx.fill();
+    // upper left corner (10, 10)
+    @assert pixel 10,9 == 255,0,0,255;
+    @assert pixel 9,10 == 255,0,0,255;
+    @assert pixel 10,10 == 0,255,0,255;
+
+    // upper right corner (89, 10)
+    @assert pixel 90,10 == 255,0,0,255;
+    @assert pixel 89,9 == 255,0,0,255;
+    @assert pixel 89,10 == 0,255,0,255;
+
+    // lower right corner (89, 39)
+    @assert pixel 89,40 == 255,0,0,255;
+    @assert pixel 90,39 == 255,0,0,255;
+    @assert pixel 89,39 == 0,255,0,255;
+
+    // lower left corner (10, 30)
+    @assert pixel 9,39 == 255,0,0,255;
+    @assert pixel 10,40 == 255,0,0,255;
+    @assert pixel 10,39 == 0,255,0,255;
+
+- name: 2d.path.roundrect.radius.toomany
+  desc: Check that roundRect throws an IndeSizeError if radii has more than four items.
+  code: |
+    assert_throws_js(RangeError, () => { ctx.roundRect(0, 0, 100, 50, [0, 0, 0, 0, 0])});
+
+- name: 2d.path.roundrect.radius.negative
+  desc: roundRect() with negative radius throws an exception
+  code: |
+    assert_throws_js(RangeError, () => { ctx.roundRect(0, 0, 0, 0, [-1])});
+    assert_throws_js(RangeError, () => { ctx.roundRect(0, 0, 0, 0, [1, -1])});
+    assert_throws_js(RangeError, () => { ctx.roundRect(0, 0, 0, 0, [new DOMPoint(-1, 1), 1])});
+    assert_throws_js(RangeError, () => { ctx.roundRect(0, 0, 0, 0, [new DOMPoint(1, -1)])});
+    assert_throws_js(RangeError, () => { ctx.roundRect(0, 0, 0, 0, [{x: -1, y: 1}, 1])});
+    assert_throws_js(RangeError, () => { ctx.roundRect(0, 0, 0, 0, [{x: 1, y: -1}])});
+
+- name: 2d.path.roundrect.badinput
+  desc: roundRect() throws or does not throw errors given the strange inputs.
+  code: |
+    ctx.roundRect(0, 0, 100, 100, { foo: "bar" });  //=> DOMPointInit
+    ctx.roundRect(0, 0, 100, 100, undefined);       //=> "missing" -> 0
+    ctx.roundRect(0, 0, 100, 100, [[]]);            //=> « DOMPointInit »
+    ctx.roundRect(0, 0, 100, 100, [[25]]);          //=> « DOMPointInit »
+    ctx.roundRect(0, 0, 100, 100, [undefined]);     //=> « DOMPointInit »
+    @assert throws TypeError ctx.roundRect(0, 0, 100, 100, 0n);
+    @assert throws TypeError ctx.roundRect(0, 0, 100, 100, { x: 0n });
+    @assert throws TypeError ctx.roundRect(0, 0, 100, 100, [{ x: 0n }]);
+
+- name: 2d.path.ellipse.basics
+  desc: Verify canvas throws error when drawing ellipse with negative radii.
+  code: |
+    ctx.ellipse(10, 10, 10, 5, 0, 0, 1, false);
+    ctx.ellipse(10, 10, 10, 0, 0, 0, 1, false);
+    ctx.ellipse(10, 10, -0, 5, 0, 0, 1, false);
+    @assert throws INDEX_SIZE_ERR ctx.ellipse(10, 10, -2, 5, 0, 0, 1, false);
+    @assert throws INDEX_SIZE_ERR ctx.ellipse(10, 10, 0, -1.5, 0, 0, 1, false);
+    @assert throws INDEX_SIZE_ERR ctx.ellipse(10, 10, -2, -5, 0, 0, 1, false);
+    ctx.ellipse(80, 0, 10, 4294967277, Math.PI / -84, -Math.PI / 2147483436, false);
+
+- name: 2d.path.fill.overlap
+  code: |
+    ctx.fillStyle = '#000';
+    ctx.fillRect(0, 0, 100, 50);
+
+    ctx.fillStyle = 'rgba(0, 255, 0, 0.5)';
+    ctx.rect(0, 0, 100, 50);
+    ctx.closePath();
+    ctx.rect(10, 10, 80, 30);
+    ctx.fill();
+
+    @assert pixel 50,25 ==~ 0,127,0,255 +/- 1;
+  expected: |
+    size 100 50
+    cr.set_source_rgb(0, 0.5, 0)
+    cr.rectangle(0, 0, 100, 50)
+    cr.fill()
+
+- name: 2d.path.fill.winding.add
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+
+    ctx.fillStyle = '#0f0';
+    ctx.moveTo(-10, -10);
+    ctx.lineTo(110, -10);
+    ctx.lineTo(110, 60);
+    ctx.lineTo(-10, 60);
+    ctx.lineTo(-10, -10);
+    ctx.lineTo(0, 0);
+    ctx.lineTo(100, 0);
+    ctx.lineTo(100, 50);
+    ctx.lineTo(0, 50);
+    ctx.fill();
+
+    @assert pixel 50,25 == 0,255,0,255;
+  expected: green
+
+- name: 2d.path.fill.winding.subtract.1
+  code: |
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 100, 50);
+
+    ctx.fillStyle = '#f00';
+    ctx.moveTo(-10, -10);
+    ctx.lineTo(110, -10);
+    ctx.lineTo(110, 60);
+    ctx.lineTo(-10, 60);
+    ctx.lineTo(-10, -10);
+    ctx.lineTo(0, 0);
+    ctx.lineTo(0, 50);
+    ctx.lineTo(100, 50);
+    ctx.lineTo(100, 0);
+    ctx.fill();
+
+    @assert pixel 50,25 == 0,255,0,255;
+  expected: green
+
+- name: 2d.path.fill.winding.subtract.2
+  code: |
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 100, 50);
+
+    ctx.fillStyle = '#f00';
+    ctx.moveTo(-10, -10);
+    ctx.lineTo(110, -10);
+    ctx.lineTo(110, 60);
+    ctx.lineTo(-10, 60);
+    ctx.moveTo(0, 0);
+    ctx.lineTo(0, 50);
+    ctx.lineTo(100, 50);
+    ctx.lineTo(100, 0);
+    ctx.fill();
+
+    @assert pixel 50,25 == 0,255,0,255;
+  expected: green
+
+- name: 2d.path.fill.winding.subtract.3
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+
+    ctx.fillStyle = '#0f0';
+    ctx.moveTo(-10, -10);
+    ctx.lineTo(110, -10);
+    ctx.lineTo(110, 60);
+    ctx.lineTo(-10, 60);
+    ctx.lineTo(-10, -10);
+    ctx.lineTo(-20, -20);
+    ctx.lineTo(120, -20);
+    ctx.lineTo(120, 70);
+    ctx.lineTo(-20, 70);
+    ctx.lineTo(-20, -20);
+    ctx.lineTo(0, 0);
+    ctx.lineTo(0, 50);
+    ctx.lineTo(100, 50);
+    ctx.lineTo(100, 0);
+    ctx.fill();
+
+    @assert pixel 50,25 == 0,255,0,255;
+  expected: green
+
+- name: 2d.path.fill.closed.basic
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+
+    ctx.fillStyle = '#0f0';
+    ctx.moveTo(0, 0);
+    ctx.lineTo(100, 0);
+    ctx.lineTo(100, 50);
+    ctx.lineTo(0, 50);
+    ctx.fill();
+
+    @assert pixel 50,25 == 0,255,0,255;
+  expected: green
+
+- name: 2d.path.fill.closed.unaffected
+  code: |
+    ctx.fillStyle = '#00f';
+    ctx.fillRect(0, 0, 100, 50);
+
+    ctx.moveTo(0, 0);
+    ctx.lineTo(100, 0);
+    ctx.lineTo(100, 50);
+    ctx.fillStyle = '#f00';
+    ctx.fill();
+    ctx.lineTo(0, 50);
+    ctx.fillStyle = '#0f0';
+    ctx.fill();
+
+    @assert pixel 90,10 == 0,255,0,255;
+    @assert pixel 10,40 == 0,255,0,255;
+  expected: green
+
+- name: 2d.path.stroke.overlap
+  desc: Stroked subpaths are combined before being drawn
+  code: |
+    ctx.fillStyle = '#000';
+    ctx.fillRect(0, 0, 100, 50);
+
+    ctx.strokeStyle = 'rgba(0, 255, 0, 0.5)';
+    ctx.lineWidth = 50;
+    ctx.moveTo(0, 20);
+    ctx.lineTo(100, 20);
+    ctx.moveTo(0, 30);
+    ctx.lineTo(100, 30);
+    ctx.stroke();
+
+    @assert pixel 50,25 ==~ 0,127,0,255 +/- 1;
+  expected: |
+    size 100 50
+    cr.set_source_rgb(0, 0.5, 0)
+    cr.rectangle(0, 0, 100, 50)
+    cr.fill()
+
+- name: 2d.path.stroke.union
+  desc: Strokes in opposite directions are unioned, not subtracted
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+
+    ctx.strokeStyle = '#0f0';
+    ctx.lineWidth = 40;
+    ctx.moveTo(0, 10);
+    ctx.lineTo(100, 10);
+    ctx.moveTo(100, 40);
+    ctx.lineTo(0, 40);
+    ctx.stroke();
+
+    @assert pixel 50,25 == 0,255,0,255;
+  expected: green
+
+- name: 2d.path.stroke.unaffected
+  desc: Stroking does not start a new path or subpath
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+
+    ctx.lineWidth = 50;
+    ctx.moveTo(-100, 25);
+    ctx.lineTo(-100, -100);
+    ctx.lineTo(200, -100);
+    ctx.lineTo(200, 25);
+    ctx.strokeStyle = '#f00';
+    ctx.stroke();
+
+    ctx.closePath();
+    ctx.strokeStyle = '#0f0';
+    ctx.stroke();
+
+    @assert pixel 50,25 == 0,255,0,255;
+  expected: green
+
+- name: 2d.path.stroke.scale1
+  desc: Stroke line widths are scaled by the current transformation matrix
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+
+    ctx.beginPath();
+    ctx.rect(25, 12.5, 50, 25);
+    ctx.save();
+    ctx.scale(50, 25);
+    ctx.strokeStyle = '#0f0';
+    ctx.stroke();
+    ctx.restore();
+
+    ctx.beginPath();
+    ctx.rect(-25, -12.5, 150, 75);
+    ctx.save();
+    ctx.scale(50, 25);
+    ctx.strokeStyle = '#f00';
+    ctx.stroke();
+    ctx.restore();
+
+    @assert pixel 0,0 == 0,255,0,255;
+    @assert pixel 50,0 == 0,255,0,255;
+    @assert pixel 99,0 == 0,255,0,255;
+    @assert pixel 0,25 == 0,255,0,255;
+    @assert pixel 50,25 == 0,255,0,255;
+    @assert pixel 99,25 == 0,255,0,255;
+    @assert pixel 0,49 == 0,255,0,255;
+    @assert pixel 50,49 == 0,255,0,255;
+    @assert pixel 99,49 == 0,255,0,255;
+  expected: green
+
+- name: 2d.path.stroke.scale2
+  desc: Stroke line widths are scaled by the current transformation matrix
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+
+    ctx.beginPath();
+    ctx.rect(25, 12.5, 50, 25);
+    ctx.save();
+    ctx.rotate(Math.PI/2);
+    ctx.scale(25, 50);
+    ctx.strokeStyle = '#0f0';
+    ctx.stroke();
+    ctx.restore();
+
+    ctx.beginPath();
+    ctx.rect(-25, -12.5, 150, 75);
+    ctx.save();
+    ctx.rotate(Math.PI/2);
+    ctx.scale(25, 50);
+    ctx.strokeStyle = '#f00';
+    ctx.stroke();
+    ctx.restore();
+
+    @assert pixel 0,0 == 0,255,0,255;
+    @assert pixel 50,0 == 0,255,0,255;
+    @assert pixel 99,0 == 0,255,0,255;
+    @assert pixel 0,25 == 0,255,0,255;
+    @assert pixel 50,25 == 0,255,0,255;
+    @assert pixel 99,25 == 0,255,0,255;
+    @assert pixel 0,49 == 0,255,0,255;
+    @assert pixel 50,49 == 0,255,0,255;
+    @assert pixel 99,49 == 0,255,0,255;
+  expected: green
+
+- name: 2d.path.stroke.skew
+  desc: Strokes lines are skewed by the current transformation matrix
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+
+    ctx.save();
+    ctx.beginPath();
+    ctx.moveTo(49, -50);
+    ctx.lineTo(201, -50);
+    ctx.rotate(Math.PI/4);
+    ctx.scale(1, 283);
+    ctx.strokeStyle = '#0f0';
+    ctx.stroke();
+    ctx.restore();
+
+    ctx.save();
+    ctx.beginPath();
+    ctx.translate(-150, 0);
+    ctx.moveTo(49, -50);
+    ctx.lineTo(199, -50);
+    ctx.rotate(Math.PI/4);
+    ctx.scale(1, 142);
+    ctx.strokeStyle = '#f00';
+    ctx.stroke();
+    ctx.restore();
+
+    ctx.save();
+    ctx.beginPath();
+    ctx.translate(-150, 0);
+    ctx.moveTo(49, -50);
+    ctx.lineTo(199, -50);
+    ctx.rotate(Math.PI/4);
+    ctx.scale(1, 142);
+    ctx.strokeStyle = '#f00';
+    ctx.stroke();
+    ctx.restore();
+
+    @assert pixel 0,0 == 0,255,0,255;
+    @assert pixel 50,0 == 0,255,0,255;
+    @assert pixel 99,0 == 0,255,0,255;
+    @assert pixel 0,25 == 0,255,0,255;
+    @assert pixel 50,25 == 0,255,0,255;
+    @assert pixel 99,25 == 0,255,0,255;
+    @assert pixel 0,49 == 0,255,0,255;
+    @assert pixel 50,49 == 0,255,0,255;
+    @assert pixel 99,49 == 0,255,0,255;
+  expected: green
+
+- name: 2d.path.stroke.empty
+  desc: Empty subpaths are not stroked
+  code: |
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 100, 50);
+
+    ctx.strokeStyle = '#f00';
+    ctx.lineWidth = 100;
+    ctx.lineCap = 'round';
+    ctx.lineJoin = 'round';
+
+    ctx.beginPath();
+    ctx.moveTo(40, 25);
+    ctx.moveTo(60, 25);
+    ctx.stroke();
+
+    @assert pixel 50,25 == 0,255,0,255;
+  expected: green
+
+- name: 2d.path.stroke.prune.line
+  desc: Zero-length line segments from lineTo are removed before stroking
+  code: |
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 100, 50);
+
+    ctx.strokeStyle = '#f00';
+    ctx.lineWidth = 100;
+    ctx.lineCap = 'round';
+    ctx.lineJoin = 'round';
+
+    ctx.beginPath();
+    ctx.moveTo(50, 25);
+    ctx.lineTo(50, 25);
+    ctx.stroke();
+
+    @assert pixel 50,25 == 0,255,0,255; @moz-todo
+  expected: green
+
+- name: 2d.path.stroke.prune.closed
+  desc: Zero-length line segments from closed paths are removed before stroking
+  code: |
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 100, 50);
+
+    ctx.strokeStyle = '#f00';
+    ctx.lineWidth = 100;
+    ctx.lineCap = 'round';
+    ctx.lineJoin = 'round';
+
+    ctx.beginPath();
+    ctx.moveTo(50, 25);
+    ctx.lineTo(50, 25);
+    ctx.closePath();
+    ctx.stroke();
+
+    @assert pixel 50,25 == 0,255,0,255; @moz-todo
+  expected: green
+
+- name: 2d.path.stroke.prune.curve
+  desc: Zero-length line segments from quadraticCurveTo and bezierCurveTo are removed
+    before stroking
+  code: |
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 100, 50);
+
+    ctx.strokeStyle = '#f00';
+    ctx.lineWidth = 100;
+    ctx.lineCap = 'round';
+    ctx.lineJoin = 'round';
+
+    ctx.beginPath();
+    ctx.moveTo(50, 25);
+    ctx.quadraticCurveTo(50, 25, 50, 25);
+    ctx.stroke();
+
+    ctx.beginPath();
+    ctx.moveTo(50, 25);
+    ctx.bezierCurveTo(50, 25, 50, 25, 50, 25);
+    ctx.stroke();
+
+    @assert pixel 50,25 == 0,255,0,255; @moz-todo
+  expected: green
+
+- name: 2d.path.stroke.prune.arc
+  desc: Zero-length line segments from arcTo and arc are removed before stroking
+  code: |
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 100, 50);
+
+    ctx.strokeStyle = '#f00';
+    ctx.lineWidth = 100;
+    ctx.lineCap = 'round';
+    ctx.lineJoin = 'round';
+
+    ctx.beginPath();
+    ctx.moveTo(50, 25);
+    ctx.arcTo(50, 25, 150, 25, 10);
+    ctx.stroke();
+
+    ctx.beginPath();
+    ctx.moveTo(60, 25);
+    ctx.arc(50, 25, 10, 0, 0, false);
+    ctx.stroke();
+
+    @assert pixel 50,25 == 0,255,0,255; @moz-todo
+  expected: green
+
+- name: 2d.path.stroke.prune.rect
+  desc: Zero-length line segments from rect and strokeRect are removed before stroking
+  code: |
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 100, 50);
+
+    ctx.strokeStyle = '#f00';
+    ctx.lineWidth = 100;
+    ctx.lineCap = 'round';
+    ctx.lineJoin = 'round';
+
+    ctx.beginPath();
+    ctx.rect(50, 25, 0, 0);
+    ctx.stroke();
+
+    ctx.strokeRect(50, 25, 0, 0);
+
+    @assert pixel 50,25 == 0,255,0,255; @moz-todo
+  expected: green
+
+- name: 2d.path.stroke.prune.corner
+  desc: Zero-length line segments are removed before stroking with miters
+  code: |
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 100, 50);
+
+    ctx.strokeStyle = '#f00';
+    ctx.lineWidth = 400;
+    ctx.lineJoin = 'miter';
+    ctx.miterLimit = 1.4;
+
+    ctx.beginPath();
+    ctx.moveTo(-1000, 200);
+    ctx.lineTo(-100, 200);
+    ctx.lineTo(-100, 200);
+    ctx.lineTo(-100, 200);
+    ctx.lineTo(-100, 1000);
+    ctx.stroke();
+
+    @assert pixel 50,25 == 0,255,0,255;
+  expected: green
+
+
+- name: 2d.path.transformation.basic
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+
+    ctx.translate(-100, 0);
+    ctx.rect(100, 0, 100, 50);
+    ctx.translate(0, -100);
+    ctx.fillStyle = '#0f0';
+    ctx.fill();
+
+    @assert pixel 50,25 == 0,255,0,255;
+  expected: green
+
+- name: 2d.path.transformation.multiple
+  # TODO: change this name
+  desc: Transformations are applied while building paths, not when drawing
+  code: |
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 100, 50);
+
+    ctx.fillStyle = '#f00';
+    ctx.translate(-100, 0);
+    ctx.rect(0, 0, 100, 50);
+    ctx.fill();
+    ctx.translate(100, 0);
+    ctx.fill();
+
+    ctx.beginPath();
+    ctx.strokeStyle = '#f00';
+    ctx.lineWidth = 50;
+    ctx.translate(0, -50);
+    ctx.moveTo(0, 25);
+    ctx.lineTo(100, 25);
+    ctx.stroke();
+    ctx.translate(0, 50);
+    ctx.stroke();
+
+    @assert pixel 50,25 == 0,255,0,255;
+  expected: green
+
+- name: 2d.path.transformation.changing
+  desc: Transformations are applied while building paths, not when drawing
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.fillStyle = '#0f0';
+    ctx.moveTo(0, 0);
+    ctx.translate(100, 0);
+    ctx.lineTo(0, 0);
+    ctx.translate(0, 50);
+    ctx.lineTo(0, 0);
+    ctx.translate(-100, 0);
+    ctx.lineTo(0, 0);
+    ctx.translate(1000, 1000);
+    ctx.rotate(Math.PI/2);
+    ctx.scale(0.1, 0.1);
+    ctx.fill();
+
+    @assert pixel 50,25 == 0,255,0,255;
+  expected: green
+
+
+- name: 2d.path.clip.empty
+  code: |
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 100, 50);
+
+    ctx.beginPath();
+    ctx.clip();
+
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+
+    @assert pixel 50,25 == 0,255,0,255;
+  expected: green
+
+- name: 2d.path.clip.basic.1
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+
+    ctx.beginPath();
+    ctx.rect(0, 0, 100, 50);
+    ctx.clip();
+
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 100, 50);
+
+    @assert pixel 50,25 == 0,255,0,255;
+  expected: green
+
+- name: 2d.path.clip.basic.2
+  code: |
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 100, 50);
+
+    ctx.beginPath();
+    ctx.rect(-100, 0, 100, 50);
+    ctx.clip();
+
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+
+    @assert pixel 50,25 == 0,255,0,255;
+  expected: green
+
+- name: 2d.path.clip.intersect
+  code: |
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 100, 50);
+
+    ctx.beginPath();
+    ctx.rect(0, 0, 50, 50);
+    ctx.clip();
+    ctx.beginPath();
+    ctx.rect(50, 0, 50, 50)
+    ctx.clip();
+
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+
+    @assert pixel 50,25 == 0,255,0,255;
+  expected: green
+
+- name: 2d.path.clip.winding.1
+  code: |
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 100, 50);
+
+    ctx.beginPath();
+    ctx.moveTo(-10, -10);
+    ctx.lineTo(110, -10);
+    ctx.lineTo(110, 60);
+    ctx.lineTo(-10, 60);
+    ctx.lineTo(-10, -10);
+    ctx.lineTo(0, 0);
+    ctx.lineTo(0, 50);
+    ctx.lineTo(100, 50);
+    ctx.lineTo(100, 0);
+    ctx.clip();
+
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+
+    @assert pixel 50,25 == 0,255,0,255;
+  expected: green
+
+- name: 2d.path.clip.winding.2
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+
+    ctx.beginPath();
+    ctx.moveTo(-10, -10);
+    ctx.lineTo(110, -10);
+    ctx.lineTo(110, 60);
+    ctx.lineTo(-10, 60);
+    ctx.lineTo(-10, -10);
+    ctx.clip();
+
+    ctx.beginPath();
+    ctx.moveTo(0, 0);
+    ctx.lineTo(0, 50);
+    ctx.lineTo(100, 50);
+    ctx.lineTo(100, 0);
+    ctx.lineTo(0, 0);
+    ctx.clip();
+
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 100, 50);
+
+    @assert pixel 50,25 == 0,255,0,255;
+  expected: green
+
+- name: 2d.path.clip.unaffected
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+
+    ctx.fillStyle = '#0f0';
+
+    ctx.beginPath();
+    ctx.moveTo(0, 0);
+    ctx.lineTo(0, 50);
+    ctx.lineTo(100, 50);
+    ctx.lineTo(100, 0);
+    ctx.clip();
+
+    ctx.lineTo(0, 0);
+    ctx.fill();
+
+    @assert pixel 50,25 == 0,255,0,255;
+  expected: green
+
+
+
+- name: 2d.path.isPointInPath.basic.1
+  desc: isPointInPath() detects whether the point is inside the path
+  code: |
+    ctx.rect(0, 0, 20, 20);
+    @assert ctx.isPointInPath(10, 10) === true;
+    @assert ctx.isPointInPath(30, 10) === false;
+
+- name: 2d.path.isPointInPath.basic.2
+  desc: isPointInPath() detects whether the point is inside the path
+  code: |
+    ctx.rect(20, 0, 20, 20);
+    @assert ctx.isPointInPath(10, 10) === false;
+    @assert ctx.isPointInPath(30, 10) === true;
+
+- name: 2d.path.isPointInPath.edge
+  desc: isPointInPath() counts points on the path as being inside
+  code: |
+    ctx.rect(0, 0, 20, 20);
+    @assert ctx.isPointInPath(0, 0) === true;
+    @assert ctx.isPointInPath(10, 0) === true;
+    @assert ctx.isPointInPath(20, 0) === true;
+    @assert ctx.isPointInPath(20, 10) === true;
+    @assert ctx.isPointInPath(20, 20) === true;
+    @assert ctx.isPointInPath(10, 20) === true;
+    @assert ctx.isPointInPath(0, 20) === true;
+    @assert ctx.isPointInPath(0, 10) === true;
+    @assert ctx.isPointInPath(10, -0.01) === false;
+    @assert ctx.isPointInPath(10, 20.01) === false;
+    @assert ctx.isPointInPath(-0.01, 10) === false;
+    @assert ctx.isPointInPath(20.01, 10) === false;
+
+- name: 2d.path.isPointInPath.empty
+  desc: isPointInPath() works when there is no path
+  code: |
+    @assert ctx.isPointInPath(0, 0) === false;
+
+- name: 2d.path.isPointInPath.subpath
+  desc: isPointInPath() uses the current path, not just the subpath
+  code: |
+    ctx.rect(0, 0, 20, 20);
+    ctx.beginPath();
+    ctx.rect(20, 0, 20, 20);
+    ctx.closePath();
+    ctx.rect(40, 0, 20, 20);
+    @assert ctx.isPointInPath(10, 10) === false;
+    @assert ctx.isPointInPath(30, 10) === true;
+    @assert ctx.isPointInPath(50, 10) === true;
+
+- name: 2d.path.isPointInPath.outside
+  desc: isPointInPath() works on paths outside the canvas
+  code: |
+    ctx.rect(0, -100, 20, 20);
+    ctx.rect(20, -10, 20, 20);
+    @assert ctx.isPointInPath(10, -110) === false;
+    @assert ctx.isPointInPath(10, -90) === true;
+    @assert ctx.isPointInPath(10, -70) === false;
+    @assert ctx.isPointInPath(30, -20) === false;
+    @assert ctx.isPointInPath(30, 0) === true;
+    @assert ctx.isPointInPath(30, 20) === false;
+
+- name: 2d.path.isPointInPath.unclosed
+  desc: isPointInPath() works on unclosed subpaths
+  code: |
+    ctx.moveTo(0, 0);
+    ctx.lineTo(20, 0);
+    ctx.lineTo(20, 20);
+    ctx.lineTo(0, 20);
+    @assert ctx.isPointInPath(10, 10) === true;
+    @assert ctx.isPointInPath(30, 10) === false;
+
+- name: 2d.path.isPointInPath.arc
+  desc: isPointInPath() works on arcs
+  code: |
+    ctx.arc(50, 25, 10, 0, Math.PI, false);
+    @assert ctx.isPointInPath(50, 10) === false;
+    @assert ctx.isPointInPath(50, 20) === false;
+    @assert ctx.isPointInPath(50, 30) === true;
+    @assert ctx.isPointInPath(50, 40) === false;
+    @assert ctx.isPointInPath(30, 20) === false;
+    @assert ctx.isPointInPath(70, 20) === false;
+    @assert ctx.isPointInPath(30, 30) === false;
+    @assert ctx.isPointInPath(70, 30) === false;
+
+- name: 2d.path.isPointInPath.bigarc
+  desc: isPointInPath() works on unclosed arcs larger than 2pi
+  opera: {bug: 320937}
+  code: |
+    ctx.arc(50, 25, 10, 0, 7, false);
+    @assert ctx.isPointInPath(50, 10) === false;
+    @assert ctx.isPointInPath(50, 20) === true;
+    @assert ctx.isPointInPath(50, 30) === true;
+    @assert ctx.isPointInPath(50, 40) === false;
+    @assert ctx.isPointInPath(30, 20) === false;
+    @assert ctx.isPointInPath(70, 20) === false;
+    @assert ctx.isPointInPath(30, 30) === false;
+    @assert ctx.isPointInPath(70, 30) === false;
+
+- name: 2d.path.isPointInPath.bezier
+  desc: isPointInPath() works on Bezier curves
+  code: |
+    ctx.moveTo(25, 25);
+    ctx.bezierCurveTo(50, -50, 50, 100, 75, 25);
+    @assert ctx.isPointInPath(25, 20) === false;
+    @assert ctx.isPointInPath(25, 30) === false;
+    @assert ctx.isPointInPath(30, 20) === true;
+    @assert ctx.isPointInPath(30, 30) === false;
+    @assert ctx.isPointInPath(40, 2) === false;
+    @assert ctx.isPointInPath(40, 20) === true;
+    @assert ctx.isPointInPath(40, 30) === false;
+    @assert ctx.isPointInPath(40, 47) === false;
+    @assert ctx.isPointInPath(45, 20) === true;
+    @assert ctx.isPointInPath(45, 30) === false;
+    @assert ctx.isPointInPath(55, 20) === false;
+    @assert ctx.isPointInPath(55, 30) === true;
+    @assert ctx.isPointInPath(60, 2) === false;
+    @assert ctx.isPointInPath(60, 20) === false;
+    @assert ctx.isPointInPath(60, 30) === true;
+    @assert ctx.isPointInPath(60, 47) === false;
+    @assert ctx.isPointInPath(70, 20) === false;
+    @assert ctx.isPointInPath(70, 30) === true;
+    @assert ctx.isPointInPath(75, 20) === false;
+    @assert ctx.isPointInPath(75, 30) === false;
+
+- name: 2d.path.isPointInPath.winding
+  desc: isPointInPath() uses the non-zero winding number rule
+  code: |
+    // Create a square ring, using opposite windings to make a hole in the centre
+    ctx.moveTo(0, 0);
+    ctx.lineTo(50, 0);
+    ctx.lineTo(50, 50);
+    ctx.lineTo(0, 50);
+    ctx.lineTo(0, 0);
+    ctx.lineTo(10, 10);
+    ctx.lineTo(10, 40);
+    ctx.lineTo(40, 40);
+    ctx.lineTo(40, 10);
+    ctx.lineTo(10, 10);
+
+    @assert ctx.isPointInPath(5, 5) === true;
+    @assert ctx.isPointInPath(25, 5) === true;
+    @assert ctx.isPointInPath(45, 5) === true;
+    @assert ctx.isPointInPath(5, 25) === true;
+    @assert ctx.isPointInPath(25, 25) === false;
+    @assert ctx.isPointInPath(45, 25) === true;
+    @assert ctx.isPointInPath(5, 45) === true;
+    @assert ctx.isPointInPath(25, 45) === true;
+    @assert ctx.isPointInPath(45, 45) === true;
+
+- name: 2d.path.isPointInPath.transform.1
+  desc: isPointInPath() handles transformations correctly
+  code: |
+    ctx.translate(50, 0);
+    ctx.rect(0, 0, 20, 20);
+    @assert ctx.isPointInPath(-40, 10) === false;
+    @assert ctx.isPointInPath(10, 10) === false;
+    @assert ctx.isPointInPath(49, 10) === false;
+    @assert ctx.isPointInPath(51, 10) === true;
+    @assert ctx.isPointInPath(69, 10) === true;
+    @assert ctx.isPointInPath(71, 10) === false;
+
+- name: 2d.path.isPointInPath.transform.2
+  desc: isPointInPath() handles transformations correctly
+  code: |
+    ctx.rect(50, 0, 20, 20);
+    ctx.translate(50, 0);
+    @assert ctx.isPointInPath(-40, 10) === false;
+    @assert ctx.isPointInPath(10, 10) === false;
+    @assert ctx.isPointInPath(49, 10) === false;
+    @assert ctx.isPointInPath(51, 10) === true;
+    @assert ctx.isPointInPath(69, 10) === true;
+    @assert ctx.isPointInPath(71, 10) === false;
+
+- name: 2d.path.isPointInPath.transform.3
+  desc: isPointInPath() handles transformations correctly
+  code: |
+    ctx.scale(-1, 1);
+    ctx.rect(-70, 0, 20, 20);
+    @assert ctx.isPointInPath(-40, 10) === false;
+    @assert ctx.isPointInPath(10, 10) === false;
+    @assert ctx.isPointInPath(49, 10) === false;
+    @assert ctx.isPointInPath(51, 10) === true;
+    @assert ctx.isPointInPath(69, 10) === true;
+    @assert ctx.isPointInPath(71, 10) === false;
+
+- name: 2d.path.isPointInPath.transform.4
+  desc: isPointInPath() handles transformations correctly
+  code: |
+    ctx.translate(50, 0);
+    ctx.rect(50, 0, 20, 20);
+    ctx.translate(0, 50);
+    @assert ctx.isPointInPath(60, 10) === false;
+    @assert ctx.isPointInPath(110, 10) === true;
+    @assert ctx.isPointInPath(110, 60) === false;
+
+- name: 2d.path.isPointInPath.nonfinite
+  desc: isPointInPath() returns false for non-finite arguments
+  code: |
+    ctx.rect(-100, -50, 200, 100);
+    @assert ctx.isPointInPath(Infinity, 0) === false;
+    @assert ctx.isPointInPath(-Infinity, 0) === false;
+    @assert ctx.isPointInPath(NaN, 0) === false;
+    @assert ctx.isPointInPath(0, Infinity) === false;
+    @assert ctx.isPointInPath(0, -Infinity) === false;
+    @assert ctx.isPointInPath(0, NaN) === false;
+    @assert ctx.isPointInPath(NaN, NaN) === false;
+
+
+- name: 2d.path.isPointInStroke.scaleddashes
+  desc: isPointInStroke() should return correct results on dashed paths at high scale
+    factors
+  code: |
+    var scale = 20;
+    ctx.setLineDash([10, 21.4159]); // dash from t=0 to t=10 along the circle
+    ctx.scale(scale, scale);
+    ctx.ellipse(6, 10, 5, 5, 0, 2*Math.PI, false);
+    ctx.stroke();
+
+    // hit-test the beginning of the dash (t=0)
+    @assert ctx.isPointInStroke(11*scale, 10*scale) === true;
+    // hit-test the middle of the dash (t=5)
+    @assert ctx.isPointInStroke(8.70*scale, 14.21*scale) === true;
+    // hit-test the end of the dash (t=9.8)
+    @assert ctx.isPointInStroke(4.10*scale, 14.63*scale) === true;
+    // hit-test past the end of the dash (t=10.2)
+    @assert ctx.isPointInStroke(3.74*scale, 14.46*scale) === false;
+
+- name: 2d.path.isPointInPath.basic
+  desc: Verify the winding rule in isPointInPath works for for rect path.
+  code: |
+    canvas.width = 200;
+    canvas.height = 200;
+
+    // Testing default isPointInPath
+    ctx.beginPath();
+    ctx.rect(0, 0, 100, 100);
+    ctx.rect(25, 25, 50, 50);
+    @assert ctx.isPointInPath(50, 50) === true;
+    @assert ctx.isPointInPath(NaN, 50) === false;
+    @assert ctx.isPointInPath(50, NaN) === false;
+
+    // Testing nonzero isPointInPath
+    ctx.beginPath();
+    ctx.rect(0, 0, 100, 100);
+    ctx.rect(25, 25, 50, 50);
+    @assert ctx.isPointInPath(50, 50, 'nonzero') === true;
+
+    // Testing evenodd isPointInPath
+    ctx.beginPath();
+    ctx.rect(0, 0, 100, 100);
+    ctx.rect(25, 25, 50, 50);
+    @assert ctx.isPointInPath(50, 50, 'evenodd') === false;
+
+    // Testing extremely large scale
+    ctx.save();
+    ctx.scale(Number.MAX_VALUE, Number.MAX_VALUE);
+    ctx.beginPath();
+    ctx.rect(-10, -10, 20, 20);
+    @assert ctx.isPointInPath(0, 0, 'nonzero') === true;
+    @assert ctx.isPointInPath(0, 0, 'evenodd') === true;
+    ctx.restore();
+
+    // Check with non-invertible ctm.
+    ctx.save();
+    ctx.scale(0, 0);
+    ctx.beginPath();
+    ctx.rect(-10, -10, 20, 20);
+    @assert ctx.isPointInPath(0, 0, 'nonzero') === false;
+    @assert ctx.isPointInPath(0, 0, 'evenodd') === false;
+    ctx.restore();
+
+- name: 2d.path.isPointInpath.multi.path
+  desc: Verify the winding rule in isPointInPath works for path object.
+  code: |
+    canvas.width = 200;
+    canvas.height = 200;
+
+    // Testing default isPointInPath with Path object');
+    path = new Path2D();
+    path.rect(0, 0, 100, 100);
+    path.rect(25, 25, 50, 50);
+    @assert ctx.isPointInPath(path, 50, 50) === true;
+    @assert ctx.isPointInPath(path, 50, 50, undefined) === true;
+    @assert ctx.isPointInPath(path, NaN, 50) === false;
+    @assert ctx.isPointInPath(path, 50, NaN) === false;
+
+    // Testing nonzero isPointInPath with Path object');
+    path = new Path2D();
+    path.rect(0, 0, 100, 100);
+    path.rect(25, 25, 50, 50);
+    @assert ctx.isPointInPath(path, 50, 50, 'nonzero') === true;
+
+    // Testing evenodd isPointInPath with Path object');
+    path = new Path2D();
+    path.rect(0, 0, 100, 100);
+    path.rect(25, 25, 50, 50);
+    assert_false(ctx.isPointInPath(path, 50, 50, 'evenodd'));
+
+- name: 2d.path.isPointInpath.invalid
+  desc: Verify isPointInPath throws exceptions with invalid inputs.
+  code: |
+    canvas.width = 200;
+    canvas.height = 200;
+    path = new Path2D();
+    path.rect(0, 0, 100, 100);
+    path.rect(25, 25, 50, 50);
+    // Testing invalid enumeration isPointInPath (w/ and w/o Path object');
+    @assert throws TypeError ctx.isPointInPath(path, 50, 50, 'gazonk');
+    @assert throws TypeError ctx.isPointInPath(50, 50, 'gazonk');
+
+    // Testing invalid type isPointInPath with Path object');
+    @assert throws TypeError ctx.isPointInPath(null, 50, 50);
+    @assert throws TypeError ctx.isPointInPath(null, 50, 50, 'nonzero');
+    @assert throws TypeError ctx.isPointInPath(null, 50, 50, 'evenodd');
+    @assert throws TypeError ctx.isPointInPath(null, 50, 50, null);
+    @assert throws TypeError ctx.isPointInPath(path, 50, 50, null);
+    @assert throws TypeError ctx.isPointInPath(undefined, 50, 50);
+    @assert throws TypeError ctx.isPointInPath(undefined, 50, 50, 'nonzero');
+    @assert throws TypeError ctx.isPointInPath(undefined, 50, 50, 'evenodd');
+    @assert throws TypeError ctx.isPointInPath(undefined, 50, 50, undefined);
+    @assert throws TypeError ctx.isPointInPath([], 50, 50);
+    @assert throws TypeError ctx.isPointInPath([], 50, 50, 'nonzero');
+    @assert throws TypeError ctx.isPointInPath([], 50, 50, 'evenodd');
+    @assert throws TypeError ctx.isPointInPath({}, 50, 50);
+    @assert throws TypeError ctx.isPointInPath({}, 50, 50, 'nonzero');
+    @assert throws TypeError ctx.isPointInPath({}, 50, 50, 'evenodd');
diff --git a/testing/web-platform/tests/html/canvas/tools/yaml-new/pixel-manipulation.yaml b/testing/web-platform/tests/html/canvas/tools/yaml-new/pixel-manipulation.yaml
new file mode 100644
index 0000000000..b9bdf3d2bd
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/tools/yaml-new/pixel-manipulation.yaml
@@ -0,0 +1,1042 @@
+- name: 2d.imageData.create2.basic
+  desc: createImageData(sw, sh) exists and returns something
+  code: |
+    @assert ctx.createImageData(1, 1) !== null;
+
+- name: 2d.imageData.create1.basic
+  desc: createImageData(imgdata) exists and returns something
+  code: |
+    @assert ctx.createImageData(ctx.createImageData(1, 1)) !== null;
+
+- name: 2d.imageData.create2.type
+  desc: createImageData(sw, sh) returns an ImageData object containing a Uint8ClampedArray
+    object
+  canvasType: ['HTMLCanvas']
+  code: |
+    @assert window.ImageData !== undefined;
+    @assert window.Uint8ClampedArray !== undefined;
+    window.ImageData.prototype.thisImplementsImageData = true;
+    window.Uint8ClampedArray.prototype.thisImplementsUint8ClampedArray = true;
+    var imgdata = ctx.createImageData(1, 1);
+    @assert imgdata.thisImplementsImageData;
+    @assert imgdata.data.thisImplementsUint8ClampedArray;
+
+- name: 2d.imageData.create1.type
+  desc: createImageData(imgdata) returns an ImageData object containing a Uint8ClampedArray
+    object
+  canvasType: ['HTMLCanvas']
+  code: |
+    @assert window.ImageData !== undefined;
+    @assert window.Uint8ClampedArray !== undefined;
+    window.ImageData.prototype.thisImplementsImageData = true;
+    window.Uint8ClampedArray.prototype.thisImplementsUint8ClampedArray = true;
+    var imgdata = ctx.createImageData(ctx.createImageData(1, 1));
+    @assert imgdata.thisImplementsImageData;
+    @assert imgdata.data.thisImplementsUint8ClampedArray;
+
+- name: 2d.imageData.create2.this
+  desc: createImageData(sw, sh) should throw when called with the wrong |this|
+  canvasType: ['HTMLCanvas']
+  notes: &bindings Defined in "Web IDL" (draft)
+  code: |
+    @assert throws TypeError CanvasRenderingContext2D.prototype.createImageData.call(null, 1, 1); @moz-todo
+    @assert throws TypeError CanvasRenderingContext2D.prototype.createImageData.call(undefined, 1, 1); @moz-todo
+    @assert throws TypeError CanvasRenderingContext2D.prototype.createImageData.call({}, 1, 1); @moz-todo
+
+- name: 2d.imageData.create1.this
+  desc: createImageData(imgdata) should throw when called with the wrong |this|
+  canvasType: ['HTMLCanvas']
+  notes: *bindings
+  code: |
+    var imgdata = ctx.createImageData(1, 1);
+    @assert throws TypeError CanvasRenderingContext2D.prototype.createImageData.call(null, imgdata); @moz-todo
+    @assert throws TypeError CanvasRenderingContext2D.prototype.createImageData.call(undefined, imgdata); @moz-todo
+    @assert throws TypeError CanvasRenderingContext2D.prototype.createImageData.call({}, imgdata); @moz-todo
+
+- name: 2d.imageData.create2.initial
+  desc: createImageData(sw, sh) returns transparent black data of the right size
+  code: |
+    var imgdata = ctx.createImageData(10, 20);
+    @assert imgdata.data.length === imgdata.width*imgdata.height*4;
+    @assert imgdata.width < imgdata.height;
+    @assert imgdata.width > 0;
+    var isTransparentBlack = true;
+    for (var i = 0; i < imgdata.data.length; ++i)
+        if (imgdata.data[i] !== 0)
+            isTransparentBlack = false;
+    @assert isTransparentBlack;
+
+- name: 2d.imageData.create1.initial
+  desc: createImageData(imgdata) returns transparent black data of the right size
+  code: |
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 100, 50);
+    var imgdata1 = ctx.getImageData(0, 0, 10, 20);
+    var imgdata2 = ctx.createImageData(imgdata1);
+    @assert imgdata2.data.length === imgdata1.data.length;
+    @assert imgdata2.width === imgdata1.width;
+    @assert imgdata2.height === imgdata1.height;
+    var isTransparentBlack = true;
+    for (var i = 0; i < imgdata2.data.length; ++i)
+        if (imgdata2.data[i] !== 0)
+            isTransparentBlack = false;
+    @assert isTransparentBlack;
+
+- name: 2d.imageData.create2.large
+  desc: createImageData(sw, sh) works for sizes much larger than the canvas
+  code: |
+    var imgdata = ctx.createImageData(1000, 2000);
+    @assert imgdata.data.length === imgdata.width*imgdata.height*4;
+    @assert imgdata.width < imgdata.height;
+    @assert imgdata.width > 0;
+    var isTransparentBlack = true;
+    for (var i = 0; i < imgdata.data.length; i += 7813) // check ~1024 points (assuming normal scaling)
+        if (imgdata.data[i] !== 0)
+            isTransparentBlack = false;
+    @assert isTransparentBlack;
+
+- name: 2d.imageData.create2.negative
+  desc: createImageData(sw, sh) takes the absolute magnitude of the size arguments
+  code: |
+    var imgdata1 = ctx.createImageData(10, 20);
+    var imgdata2 = ctx.createImageData(-10, 20);
+    var imgdata3 = ctx.createImageData(10, -20);
+    var imgdata4 = ctx.createImageData(-10, -20);
+    @assert imgdata1.data.length === imgdata2.data.length;
+    @assert imgdata2.data.length === imgdata3.data.length;
+    @assert imgdata3.data.length === imgdata4.data.length;
+
+- name: 2d.imageData.create2.zero
+  desc: createImageData(sw, sh) throws INDEX_SIZE_ERR if size is zero
+  code: |
+    @assert throws INDEX_SIZE_ERR ctx.createImageData(10, 0);
+    @assert throws INDEX_SIZE_ERR ctx.createImageData(0, 10);
+    @assert throws INDEX_SIZE_ERR ctx.createImageData(0, 0);
+    @assert throws INDEX_SIZE_ERR ctx.createImageData(0.99, 10);
+    @assert throws INDEX_SIZE_ERR ctx.createImageData(10, 0.1);
+
+- name: 2d.imageData.create2.nonfinite
+  desc: createImageData() throws TypeError if arguments are not finite
+  notes: *bindings
+  code: |
+    @nonfinite @assert throws TypeError ctx.createImageData(<10 Infinity -Infinity NaN>, <10 Infinity -Infinity NaN>);
+    var posinfobj = { valueOf: function() { return Infinity; } },
+        neginfobj = { valueOf: function() { return -Infinity; } },
+        nanobj = { valueOf: function() { return -Infinity; } };
+    @nonfinite @assert throws TypeError ctx.createImageData(<10 posinfobj neginfobj nanobj>, <10 posinfobj neginfobj nanobj>);
+
+- name: 2d.imageData.create1.zero
+  desc: createImageData(null) throws TypeError
+  code: |
+    @assert throws TypeError ctx.createImageData(null);
+
+- name: 2d.imageData.create2.double
+  desc: createImageData(w, h) double is converted to long
+  code: |
+    var imgdata1 = ctx.createImageData(10.01, 10.99);
+    var imgdata2 = ctx.createImageData(-10.01, -10.99);
+    @assert imgdata1.width === 10;
+    @assert imgdata1.height === 10;
+    @assert imgdata2.width === 10;
+    @assert imgdata2.height === 10;
+
+- name: 2d.imageData.get.double
+  desc: createImageData(w, h) double is converted to long
+  code: |
+    var imgdata1 = ctx.getImageData(0, 0, 10.01, 10.99);
+    var imgdata2 = ctx.getImageData(0, 0, -10.01, -10.99);
+    @assert imgdata1.width === 10;
+    @assert imgdata1.height === 10;
+    @assert imgdata2.width === 10;
+    @assert imgdata2.height === 10;
+
+- name: 2d.imageData.create2.round
+  desc: createImageData(w, h) is rounded the same as getImageData(0, 0, w, h)
+  code: |
+    var imgdata1 = ctx.createImageData(10.01, 10.99);
+    var imgdata2 = ctx.getImageData(0, 0, 10.01, 10.99);
+    @assert imgdata1.width === imgdata2.width;
+    @assert imgdata1.height === imgdata2.height;
+
+- name: 2d.imageData.create.and.resize
+  desc: Verify no crash when resizing an image bitmap to zero.
+  canvasType: ['HTMLCanvas']
+  images:
+  - red.png
+  code: |
+    var image = new Image();
+    image.onload = t.step_func(function() {
+      var options = { resizeHeight: 0 };
+      var p1 = createImageBitmap(image, options);
+      p1.catch(function(error){});
+      t.done();
+    });
+    image.src = 'red.png';
+
+- name: 2d.imageData.get.basic
+  desc: getImageData() exists and returns something
+  code: |
+    @assert ctx.getImageData(0, 0, 100, 50) !== null;
+
+- name: 2d.imageData.get.type
+  canvasType: ['HTMLCanvas']
+  desc: getImageData() returns an ImageData object containing a Uint8ClampedArray
+    object
+  code: |
+    @assert window.ImageData !== undefined;
+    @assert window.Uint8ClampedArray !== undefined;
+    window.ImageData.prototype.thisImplementsImageData = true;
+    window.Uint8ClampedArray.prototype.thisImplementsUint8ClampedArray = true;
+    var imgdata = ctx.getImageData(0, 0, 1, 1);
+    @assert imgdata.thisImplementsImageData;
+    @assert imgdata.data.thisImplementsUint8ClampedArray;
+
+- name: 2d.imageData.get.zero
+  desc: getImageData() throws INDEX_SIZE_ERR if size is zero
+  code: |
+    @assert throws INDEX_SIZE_ERR ctx.getImageData(1, 1, 10, 0);
+    @assert throws INDEX_SIZE_ERR ctx.getImageData(1, 1, 0, 10);
+    @assert throws INDEX_SIZE_ERR ctx.getImageData(1, 1, 0, 0);
+    @assert throws INDEX_SIZE_ERR ctx.getImageData(1, 1, 0.1, 10);
+    @assert throws INDEX_SIZE_ERR ctx.getImageData(1, 1, 10, 0.99);
+    @assert throws INDEX_SIZE_ERR ctx.getImageData(1, 1, -0.1, 10);
+    @assert throws INDEX_SIZE_ERR ctx.getImageData(1, 1, 10, -0.99);
+
+- name: 2d.imageData.get.nonfinite
+  desc: getImageData() throws TypeError if arguments are not finite
+  notes: *bindings
+  code: |
+    @nonfinite @assert throws TypeError ctx.getImageData(<10 Infinity -Infinity NaN>, <10 Infinity -Infinity NaN>, <10 Infinity -Infinity NaN>, <10 Infinity -Infinity NaN>);
+    var posinfobj = { valueOf: function() { return Infinity; } },
+        neginfobj = { valueOf: function() { return -Infinity; } },
+        nanobj = { valueOf: function() { return -Infinity; } };
+    @nonfinite @assert throws TypeError ctx.getImageData(<10 posinfobj neginfobj nanobj>, <10 posinfobj neginfobj nanobj>, <10 posinfobj neginfobj nanobj>, <10 posinfobj neginfobj nanobj>);
+
+- name: 2d.imageData.get.source.outside
+  desc: getImageData() returns transparent black outside the canvas
+  code: |
+    ctx.fillStyle = '#08f';
+    ctx.fillRect(0, 0, 100, 50);
+
+    var imgdata1 = ctx.getImageData(-10, 5, 1, 1);
+    @assert imgdata1.data[0] === 0;
+    @assert imgdata1.data[1] === 0;
+    @assert imgdata1.data[2] === 0;
+    @assert imgdata1.data[3] === 0;
+
+    var imgdata2 = ctx.getImageData(10, -5, 1, 1);
+    @assert imgdata2.data[0] === 0;
+    @assert imgdata2.data[1] === 0;
+    @assert imgdata2.data[2] === 0;
+    @assert imgdata2.data[3] === 0;
+
+    var imgdata3 = ctx.getImageData(200, 5, 1, 1);
+    @assert imgdata3.data[0] === 0;
+    @assert imgdata3.data[1] === 0;
+    @assert imgdata3.data[2] === 0;
+    @assert imgdata3.data[3] === 0;
+
+    var imgdata4 = ctx.getImageData(10, 60, 1, 1);
+    @assert imgdata4.data[0] === 0;
+    @assert imgdata4.data[1] === 0;
+    @assert imgdata4.data[2] === 0;
+    @assert imgdata4.data[3] === 0;
+
+    var imgdata5 = ctx.getImageData(100, 10, 1, 1);
+    @assert imgdata5.data[0] === 0;
+    @assert imgdata5.data[1] === 0;
+    @assert imgdata5.data[2] === 0;
+    @assert imgdata5.data[3] === 0;
+
+    var imgdata6 = ctx.getImageData(0, 10, 1, 1);
+    @assert imgdata6.data[0] === 0;
+    @assert imgdata6.data[1] === 136;
+    @assert imgdata6.data[2] === 255;
+    @assert imgdata6.data[3] === 255;
+
+    var imgdata7 = ctx.getImageData(-10, 10, 20, 20);
+    @assert imgdata7.data[ 0*4+0] === 0;
+    @assert imgdata7.data[ 0*4+1] === 0;
+    @assert imgdata7.data[ 0*4+2] === 0;
+    @assert imgdata7.data[ 0*4+3] === 0;
+    @assert imgdata7.data[ 9*4+0] === 0;
+    @assert imgdata7.data[ 9*4+1] === 0;
+    @assert imgdata7.data[ 9*4+2] === 0;
+    @assert imgdata7.data[ 9*4+3] === 0;
+    @assert imgdata7.data[10*4+0] === 0;
+    @assert imgdata7.data[10*4+1] === 136;
+    @assert imgdata7.data[10*4+2] === 255;
+    @assert imgdata7.data[10*4+3] === 255;
+    @assert imgdata7.data[19*4+0] === 0;
+    @assert imgdata7.data[19*4+1] === 136;
+    @assert imgdata7.data[19*4+2] === 255;
+    @assert imgdata7.data[19*4+3] === 255;
+    @assert imgdata7.data[20*4+0] === 0;
+    @assert imgdata7.data[20*4+1] === 0;
+    @assert imgdata7.data[20*4+2] === 0;
+    @assert imgdata7.data[20*4+3] === 0;
+
+- name: 2d.imageData.get.source.negative
+  desc: getImageData() works with negative width and height, and returns top-to-bottom
+    left-to-right
+  code: |
+    ctx.fillStyle = '#000';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.fillStyle = '#fff';
+    ctx.fillRect(20, 10, 60, 10);
+
+    var imgdata1 = ctx.getImageData(85, 25, -10, -10);
+    @assert imgdata1.data[0] === 255;
+    @assert imgdata1.data[1] === 255;
+    @assert imgdata1.data[2] === 255;
+    @assert imgdata1.data[3] === 255;
+    @assert imgdata1.data[imgdata1.data.length-4+0] === 0;
+    @assert imgdata1.data[imgdata1.data.length-4+1] === 0;
+    @assert imgdata1.data[imgdata1.data.length-4+2] === 0;
+    @assert imgdata1.data[imgdata1.data.length-4+3] === 255;
+
+    var imgdata2 = ctx.getImageData(0, 0, -1, -1);
+    @assert imgdata2.data[0] === 0;
+    @assert imgdata2.data[1] === 0;
+    @assert imgdata2.data[2] === 0;
+    @assert imgdata2.data[3] === 0;
+
+- name: 2d.imageData.get.source.size
+  desc: getImageData() returns bigger ImageData for bigger source rectangle
+  code: |
+    var imgdata1 = ctx.getImageData(0, 0, 10, 10);
+    var imgdata2 = ctx.getImageData(0, 0, 20, 20);
+    @assert imgdata2.width > imgdata1.width;
+    @assert imgdata2.height > imgdata1.height;
+
+- name: 2d.imageData.get.nonpremul
+  desc: getImageData() returns non-premultiplied colors
+  code: |
+    ctx.fillStyle = 'rgba(255, 255, 255, 0.5)';
+    ctx.fillRect(0, 0, 100, 50);
+    var imgdata = ctx.getImageData(10, 10, 10, 10);
+    @assert imgdata.data[0] > 200;
+    @assert imgdata.data[1] > 200;
+    @assert imgdata.data[2] > 200;
+    @assert imgdata.data[3] > 100;
+    @assert imgdata.data[3] < 200;
+
+- name: 2d.imageData.get.range
+  desc: getImageData() returns values in the range [0, 255]
+  code: |
+    ctx.fillStyle = '#000';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.fillStyle = '#fff';
+    ctx.fillRect(20, 10, 60, 10);
+    var imgdata1 = ctx.getImageData(10, 5, 1, 1);
+    @assert imgdata1.data[0] === 0;
+    var imgdata2 = ctx.getImageData(30, 15, 1, 1);
+    @assert imgdata2.data[0] === 255;
+
+- name: 2d.imageData.get.clamp
+  desc: getImageData() clamps colors to the range [0, 255]
+  code: |
+    ctx.fillStyle = 'rgb(-100, -200, -300)';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.fillStyle = 'rgb(256, 300, 400)';
+    ctx.fillRect(20, 10, 60, 10);
+    var imgdata1 = ctx.getImageData(10, 5, 1, 1);
+    @assert imgdata1.data[0] === 0;
+    @assert imgdata1.data[1] === 0;
+    @assert imgdata1.data[2] === 0;
+    var imgdata2 = ctx.getImageData(30, 15, 1, 1);
+    @assert imgdata2.data[0] === 255;
+    @assert imgdata2.data[1] === 255;
+    @assert imgdata2.data[2] === 255;
+
+- name: 2d.imageData.get.length
+  desc: getImageData() returns a correctly-sized Uint8ClampedArray
+  code: |
+    var imgdata = ctx.getImageData(0, 0, 10, 10);
+    @assert imgdata.data.length === imgdata.width*imgdata.height*4;
+
+- name: 2d.imageData.get.order.cols
+  desc: getImageData() returns leftmost columns first
+  code: |
+    ctx.fillStyle = '#fff';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.fillStyle = '#000';
+    ctx.fillRect(0, 0, 2, 50);
+    var imgdata = ctx.getImageData(0, 0, 10, 10);
+    @assert imgdata.data[0] === 0;
+    @assert imgdata.data[Math.round(imgdata.width/2*4)] === 255;
+    @assert imgdata.data[Math.round((imgdata.height/2)*imgdata.width*4)] === 0;
+
+- name: 2d.imageData.get.order.rows
+  desc: getImageData() returns topmost rows first
+  code: |
+    ctx.fillStyle = '#fff';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.fillStyle = '#000';
+    ctx.fillRect(0, 0, 100, 2);
+    var imgdata = ctx.getImageData(0, 0, 10, 10);
+    @assert imgdata.data[0] === 0;
+    @assert imgdata.data[Math.floor(imgdata.width/2*4)] === 0;
+    @assert imgdata.data[(imgdata.height/2)*imgdata.width*4] === 255;
+
+- name: 2d.imageData.get.order.rgb
+  desc: getImageData() returns R then G then B
+  code: |
+    ctx.fillStyle = '#48c';
+    ctx.fillRect(0, 0, 100, 50);
+    var imgdata = ctx.getImageData(0, 0, 10, 10);
+    @assert imgdata.data[0] === 0x44;
+    @assert imgdata.data[1] === 0x88;
+    @assert imgdata.data[2] === 0xCC;
+    @assert imgdata.data[3] === 255;
+    @assert imgdata.data[4] === 0x44;
+    @assert imgdata.data[5] === 0x88;
+    @assert imgdata.data[6] === 0xCC;
+    @assert imgdata.data[7] === 255;
+
+- name: 2d.imageData.get.order.alpha
+  desc: getImageData() returns A in the fourth component
+  code: |
+    ctx.fillStyle = 'rgba(0, 0, 0, 0.5)';
+    ctx.fillRect(0, 0, 100, 50);
+    var imgdata = ctx.getImageData(0, 0, 10, 10);
+    @assert imgdata.data[3] < 200;
+    @assert imgdata.data[3] > 100;
+
+- name: 2d.imageData.get.unaffected
+  desc: getImageData() is not affected by context state
+  code: |
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 50, 50)
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(50, 0, 50, 50)
+    ctx.save();
+    ctx.translate(50, 0);
+    ctx.globalAlpha = 0.1;
+    ctx.globalCompositeOperation = 'destination-atop';
+    ctx.shadowColor = '#f00';
+    ctx.rect(0, 0, 5, 5);
+    ctx.clip();
+    var imgdata = ctx.getImageData(0, 0, 50, 50);
+    ctx.restore();
+    ctx.putImageData(imgdata, 50, 0);
+    @assert pixel 25,25 ==~ 0,255,0,255;
+    @assert pixel 75,25 ==~ 0,255,0,255;
+  expected: green
+
+- name: 2d.imageData.get.large.crash
+  desc: Test that canvas crash when image data cannot be allocated.
+  code: |
+    @assert throws TypeError ctx.getImageData(10, 0xffffffff, 2147483647, 10);
+
+- name: 2d.imageData.get.rounding
+  desc: Test the handling of non-integer source coordinates in getImageData().
+  code: |
+    function testDimensions(sx, sy, sw, sh, width, height)
+    {
+        imageData = ctx.getImageData(sx, sy, sw, sh);
+        @assert imageData.width == width;
+        @assert imageData.height == height;
+    }
+
+    testDimensions(0, 0, 20, 10, 20, 10);
+
+    testDimensions(.1, .2, 20, 10, 20, 10);
+    testDimensions(.9, .8, 20, 10, 20, 10);
+
+    testDimensions(0, 0, 20.9, 10.9, 20, 10);
+    testDimensions(0, 0, 20.1, 10.1, 20, 10);
+
+    testDimensions(-1, -1, 20, 10, 20, 10);
+
+    testDimensions(-1.1, 0, 20, 10, 20, 10);
+    testDimensions(-1.9,  0, 20, 10, 20, 10);
+
+- name: 2d.imageData.get.invalid
+  desc: Verify getImageData() behavior in invalid cases.
+  code: |
+    imageData = ctx.getImageData(0,0,2,2);
+    var testValues = [NaN, true, false, "\"garbage\"", "-1",
+                      "0", "1", "2", Infinity, -Infinity,
+                      -5, -0.5, 0, 0.5, 5,
+                      5.4, 255, 256, null, undefined];
+    var testResults = [0, 1, 0, 0, 0,
+                       0, 1, 2, 255, 0,
+                       0, 0, 0, 0, 5,
+                       5, 255, 255, 0, 0];
+    for (var i = 0; i < testValues.length; i++) {
+        imageData.data[0] = testValues[i];
+        @assert imageData.data[0] == testResults[i];
+    }
+    imageData.data['foo']='garbage';
+    @assert imageData.data['foo'] == 'garbage';
+    imageData.data[-1]='garbage';
+    @assert imageData.data[-1] == undefined;
+    imageData.data[17]='garbage';
+    @assert imageData.data[17] == undefined;
+
+- name: 2d.imageData.object.properties
+  desc: ImageData objects have the right properties
+  code: |
+    var imgdata = ctx.getImageData(0, 0, 10, 10);
+    @assert typeof(imgdata.width) === 'number';
+    @assert typeof(imgdata.height) === 'number';
+    @assert typeof(imgdata.data) === 'object';
+
+- name: 2d.imageData.object.readonly
+  desc: ImageData objects properties are read-only
+  code: |
+    var imgdata = ctx.getImageData(0, 0, 10, 10);
+    var w = imgdata.width;
+    var h = imgdata.height;
+    var d = imgdata.data;
+    imgdata.width = 123;
+    imgdata.height = 123;
+    imgdata.data = [100,100,100,100];
+    @assert imgdata.width === w;
+    @assert imgdata.height === h;
+    @assert imgdata.data === d;
+    @assert imgdata.data[0] === 0;
+    @assert imgdata.data[1] === 0;
+    @assert imgdata.data[2] === 0;
+    @assert imgdata.data[3] === 0;
+
+- name: 2d.imageData.object.ctor.size
+  canvasType: ['HTMLCanvas']
+  desc: ImageData has a usable constructor
+  code: |
+    @assert window.ImageData !== undefined;
+
+    var imgdata = new window.ImageData(2, 3);
+    @assert imgdata.width === 2;
+    @assert imgdata.height === 3;
+    @assert imgdata.data.length === 2 * 3 * 4;
+    for (var i = 0; i < imgdata.data.length; ++i) {
+      @assert imgdata.data[i] === 0;
+    }
+
+- name: 2d.imageData.object.ctor.basics
+  canvasType: ['HTMLCanvas']
+  desc: Testing different type of ImageData constructor
+  code: |
+    function setRGBA(imageData, i, rgba)
+    {
+        var s = i * 4;
+        imageData[s] = rgba[0];
+        imageData[s + 1] = rgba[1];
+        imageData[s + 2] = rgba[2];
+        imageData[s + 3] = rgba[3];
+    }
+
+    function getRGBA(imageData, i)
+    {
+        var result = [];
+        var s = i * 4;
+        for (var j = 0; j < 4; j++) {
+            result[j] = imageData[s + j];
+        }
+        return result;
+    }
+
+    function assertArrayEquals(actual, expected)
+    {
+        @assert typeof actual === "object";
+        @assert actual !== null;
+        @assert "length" in actual === true;
+        @assert actual.length === expected.length;
+        for (var i = 0; i < actual.length; i++) {
+            @assert actual.hasOwnProperty(i) === expected.hasOwnProperty(i);
+            @assert actual[i] === expected[i];
+        }
+    }
+
+    @assert ImageData !== undefined;
+    imageData = new ImageData(100, 50);
+
+    @assert imageData !== null;
+    @assert imageData.data !== null;
+    @assert imageData.width === 100;
+    @assert imageData.height === 50;
+    assertArrayEquals(getRGBA(imageData.data, 4), [0, 0, 0, 0]);
+
+    var testColor = [0, 255, 255, 128];
+    setRGBA(imageData.data, 4, testColor);
+    assertArrayEquals(getRGBA(imageData.data, 4), testColor);
+
+    @assert throws TypeError ImageData(1, 1);
+    @assert throws TypeError new ImageData(10);
+    @assert throws INDEX_SIZE_ERR new ImageData(0, 10);
+    @assert throws INDEX_SIZE_ERR new ImageData(10, 0);
+    @assert throws INDEX_SIZE_ERR new ImageData('width', 'height');
+    @assert throws INDEX_SIZE_ERR new ImageData(1 << 31, 1 << 31);
+    @assert throws TypeError new ImageData(new Uint8ClampedArray(0));
+    @assert throws INDEX_SIZE_ERR new ImageData(new Uint8Array(100), 25);
+    @assert throws INVALID_STATE_ERR new ImageData(new Uint8ClampedArray(27), 2);
+    @assert throws INDEX_SIZE_ERR new ImageData(new Uint8ClampedArray(28), 7, 0);
+    @assert throws INDEX_SIZE_ERR new ImageData(new Uint8ClampedArray(104), 14);
+    @assert throws INDEX_SIZE_ERR new ImageData(new Uint8ClampedArray([12, 34, 168, 65328]), 1, 151);
+    @assert throws TypeError new ImageData(self, 4, 4);
+    @assert throws TypeError new ImageData(null, 4, 4);
+    @assert throws INDEX_SIZE_ERR new ImageData(imageData.data, 0);
+    @assert throws INDEX_SIZE_ERR new ImageData(imageData.data, 13);
+    @assert throws INDEX_SIZE_ERR new ImageData(imageData.data, 1 << 31);
+    @assert throws INDEX_SIZE_ERR new ImageData(imageData.data, 'biggish');
+    @assert throws INDEX_SIZE_ERR new ImageData(imageData.data, 1 << 24, 1 << 31);
+    @assert new ImageData(new Uint8ClampedArray(28), 7).height === 1;
+
+    imageDataFromData = new ImageData(imageData.data, 100);
+    @assert imageDataFromData.width === 100;
+    @assert imageDataFromData.height === 50;
+    @assert imageDataFromData.data === imageData.data;
+    assertArrayEquals(getRGBA(imageDataFromData.data, 10), getRGBA(imageData.data, 10));
+    setRGBA(imageData.data, 10, testColor);
+    assertArrayEquals(getRGBA(imageDataFromData.data, 10), getRGBA(imageData.data, 10));
+
+    var data = new Uint8ClampedArray(400);
+    data[22] = 129;
+    imageDataFromData = new ImageData(data, 20, 5);
+    @assert imageDataFromData.width === 20;
+    @assert imageDataFromData.height === 5;
+    @assert imageDataFromData.data === data;
+    assertArrayEquals(getRGBA(imageDataFromData.data, 2), getRGBA(data, 2));
+    setRGBA(imageDataFromData.data, 2, testColor);
+    assertArrayEquals(getRGBA(imageDataFromData.data, 2), getRGBA(data, 2));
+
+    if (window.SharedArrayBuffer) {
+        @assert throws TypeError new ImageData(new Uint16Array(new SharedArrayBuffer(32)), 4, 2);
+    }
+
+- name: 2d.imageData.object.ctor.array
+  desc: ImageData has a usable constructor
+  canvasType: ['HTMLCanvas']
+  code: |
+    @assert window.ImageData !== undefined;
+
+    var array = new Uint8ClampedArray(8);
+    var imgdata = new window.ImageData(array, 1, 2);
+    @assert imgdata.width === 1;
+    @assert imgdata.height === 2;
+    @assert imgdata.data === array;
+
+- name: 2d.imageData.object.ctor.array.bounds
+  desc: ImageData has a usable constructor
+  canvasType: ['HTMLCanvas']
+  code: |
+    @assert window.ImageData !== undefined;
+
+    @assert throws INVALID_STATE_ERR new ImageData(new Uint8ClampedArray(0), 1);
+    @assert throws INVALID_STATE_ERR new ImageData(new Uint8ClampedArray(3), 1);
+    @assert throws INDEX_SIZE_ERR new ImageData(new Uint8ClampedArray(4), 0);
+    @assert throws INDEX_SIZE_ERR new ImageData(new Uint8ClampedArray(4), 1, 2);
+    @assert throws TypeError new ImageData(new Uint8Array(8), 1, 2);
+    @assert throws TypeError new ImageData(new Int8Array(8), 1, 2);
+
+- name: 2d.imageData.object.set
+  desc: ImageData.data can be modified
+  code: |
+    var imgdata = ctx.getImageData(0, 0, 10, 10);
+    imgdata.data[0] = 100;
+    @assert imgdata.data[0] === 100;
+    imgdata.data[0] = 200;
+    @assert imgdata.data[0] === 200;
+
+- name: 2d.imageData.object.undefined
+  desc: ImageData.data converts undefined to 0
+  webidl:
+  - es-octet
+  code: |
+    var imgdata = ctx.getImageData(0, 0, 10, 10);
+    imgdata.data[0] = 100;
+    imgdata.data[0] = undefined;
+    @assert imgdata.data[0] === 0;
+
+- name: 2d.imageData.object.nan
+  desc: ImageData.data converts NaN to 0
+  webidl:
+  - es-octet
+  code: |
+    var imgdata = ctx.getImageData(0, 0, 10, 10);
+    imgdata.data[0] = 100;
+    imgdata.data[0] = NaN;
+    @assert imgdata.data[0] === 0;
+    imgdata.data[0] = 100;
+    imgdata.data[0] = "cheese";
+    @assert imgdata.data[0] === 0;
+
+- name: 2d.imageData.object.string
+  desc: ImageData.data converts strings to numbers with ToNumber
+  webidl:
+  - es-octet
+  code: |
+    var imgdata = ctx.getImageData(0, 0, 10, 10);
+    imgdata.data[0] = 100;
+    imgdata.data[0] = "110";
+    @assert imgdata.data[0] === 110;
+    imgdata.data[0] = 100;
+    imgdata.data[0] = "0x78";
+    @assert imgdata.data[0] === 120;
+    imgdata.data[0] = 100;
+    imgdata.data[0] = " +130e0 ";
+    @assert imgdata.data[0] === 130;
+
+- name: 2d.imageData.object.clamp
+  desc: ImageData.data clamps numbers to [0, 255]
+  webidl:
+  - es-octet
+  code: |
+    var imgdata = ctx.getImageData(0, 0, 10, 10);
+
+    imgdata.data[0] = 100;
+    imgdata.data[0] = 300;
+    @assert imgdata.data[0] === 255;
+    imgdata.data[0] = 100;
+    imgdata.data[0] = -100;
+    @assert imgdata.data[0] === 0;
+
+    imgdata.data[0] = 100;
+    imgdata.data[0] = 200+Math.pow(2, 32);
+    @assert imgdata.data[0] === 255;
+    imgdata.data[0] = 100;
+    imgdata.data[0] = -200-Math.pow(2, 32);
+    @assert imgdata.data[0] === 0;
+
+    imgdata.data[0] = 100;
+    imgdata.data[0] = Math.pow(10, 39);
+    @assert imgdata.data[0] === 255;
+    imgdata.data[0] = 100;
+    imgdata.data[0] = -Math.pow(10, 39);
+    @assert imgdata.data[0] === 0;
+
+    imgdata.data[0] = 100;
+    imgdata.data[0] = -Infinity;
+    @assert imgdata.data[0] === 0;
+    imgdata.data[0] = 100;
+    imgdata.data[0] = Infinity;
+    @assert imgdata.data[0] === 255;
+
+- name: 2d.imageData.object.round
+  desc: ImageData.data rounds numbers with round-to-zero
+  webidl:
+  - es-octet
+  code: |
+    var imgdata = ctx.getImageData(0, 0, 10, 10);
+    imgdata.data[0] = 0.499;
+    @assert imgdata.data[0] === 0;
+    imgdata.data[0] = 0.5;
+    @assert imgdata.data[0] === 0;
+    imgdata.data[0] = 0.501;
+    @assert imgdata.data[0] === 1;
+    imgdata.data[0] = 1.499;
+    @assert imgdata.data[0] === 1;
+    imgdata.data[0] = 1.5;
+    @assert imgdata.data[0] === 2;
+    imgdata.data[0] = 1.501;
+    @assert imgdata.data[0] === 2;
+    imgdata.data[0] = 2.5;
+    @assert imgdata.data[0] === 2;
+    imgdata.data[0] = 3.5;
+    @assert imgdata.data[0] === 4;
+    imgdata.data[0] = 252.5;
+    @assert imgdata.data[0] === 252;
+    imgdata.data[0] = 253.5;
+    @assert imgdata.data[0] === 254;
+    imgdata.data[0] = 254.5;
+    @assert imgdata.data[0] === 254;
+    imgdata.data[0] = 256.5;
+    @assert imgdata.data[0] === 255;
+    imgdata.data[0] = -0.5;
+    @assert imgdata.data[0] === 0;
+    imgdata.data[0] = -1.5;
+    @assert imgdata.data[0] === 0;
+
+
+
+- name: 2d.imageData.put.null
+  desc: putImageData() with null imagedata throws TypeError
+  code: |
+    @assert throws TypeError ctx.putImageData(null, 0, 0);
+
+- name: 2d.imageData.put.nonfinite
+  desc: putImageData() throws TypeError if arguments are not finite
+  notes: *bindings
+  code: |
+    var imgdata = ctx.getImageData(0, 0, 10, 10);
+    @nonfinite @assert throws TypeError ctx.putImageData(, <10 Infinity -Infinity NaN>, <10 Infinity -Infinity NaN>);
+    @nonfinite @assert throws TypeError ctx.putImageData(, <10 Infinity -Infinity NaN>, <10 Infinity -Infinity NaN>, <10 Infinity -Infinity NaN>, <10 Infinity -Infinity NaN>, <10 Infinity -Infinity NaN>, <10 Infinity -Infinity NaN>);
+
+- name: 2d.imageData.put.basic
+  desc: putImageData() puts image data from getImageData() onto the canvas
+  code: |
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 100, 50)
+    var imgdata = ctx.getImageData(0, 0, 100, 50);
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50)
+    ctx.putImageData(imgdata, 0, 0);
+    @assert pixel 50,25 ==~ 0,255,0,255;
+  expected: green
+
+- name: 2d.imageData.put.created
+  desc: putImageData() puts image data from createImageData() onto the canvas
+  code: |
+    var imgdata = ctx.createImageData(100, 50);
+    for (var i = 0; i < imgdata.data.length; i += 4) {
+        imgdata.data[i] = 0;
+        imgdata.data[i+1] = 255;
+        imgdata.data[i+2] = 0;
+        imgdata.data[i+3] = 255;
+    }
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50)
+    ctx.putImageData(imgdata, 0, 0);
+    @assert pixel 50,25 ==~ 0,255,0,255;
+  expected: green
+
+- name: 2d.imageData.put.wrongtype
+  desc: putImageData() does not accept non-ImageData objects
+  code: |
+    var imgdata = { width: 1, height: 1, data: [255, 0, 0, 255] };
+    @assert throws TypeError ctx.putImageData(imgdata, 0, 0);
+    @assert throws TypeError ctx.putImageData("cheese", 0, 0);
+    @assert throws TypeError ctx.putImageData(42, 0, 0);
+  expected: green
+
+- name: 2d.imageData.put.cross
+  desc: putImageData() accepts image data got from a different canvas
+  canvasType: ['HTMLCanvas']
+  code: |
+    var canvas2 = document.createElement('canvas');
+    var ctx2 = canvas2.getContext('2d');
+    ctx2.fillStyle = '#0f0';
+    ctx2.fillRect(0, 0, 100, 50)
+    var imgdata = ctx2.getImageData(0, 0, 100, 50);
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50)
+    ctx.putImageData(imgdata, 0, 0);
+    @assert pixel 50,25 ==~ 0,255,0,255;
+  expected: green
+
+- name: 2d.imageData.put.cross
+  desc: putImageData() accepts image data got from a different canvas
+  canvasType: ['OffscreenCanvas']
+  code: |
+    var offscreenCanvas2 = new OffscreenCanvas(100, 50);
+    var ctx2 = offscreenCanvas2.getContext('2d');
+    ctx2.fillStyle = '#0f0';
+    ctx2.fillRect(0, 0, 100, 50)
+    var imgdata = ctx2.getImageData(0, 0, 100, 50);
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50)
+    ctx.putImageData(imgdata, 0, 0);
+    @assert pixel 50,25 ==~ 0,255,0,255;
+  expected: green
+
+- name: 2d.imageData.put.alpha
+  desc: putImageData() puts non-solid image data correctly
+  code: |
+    ctx.fillStyle = 'rgba(0, 255, 0, 0.25)';
+    ctx.fillRect(0, 0, 100, 50)
+    var imgdata = ctx.getImageData(0, 0, 100, 50);
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50)
+    ctx.putImageData(imgdata, 0, 0);
+    @assert pixel 50,25 ==~ 0,255,0,64;
+  expected: |
+    size 100 50
+    cr.set_source_rgba(0, 1, 0, 0.25)
+    cr.rectangle(0, 0, 100, 50)
+    cr.fill()
+
+- name: 2d.imageData.put.modified
+  desc: putImageData() puts modified image data correctly
+  code: |
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 100, 50)
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(45, 20, 10, 10)
+    var imgdata = ctx.getImageData(45, 20, 10, 10);
+    for (var i = 0, len = imgdata.width*imgdata.height*4; i < len; i += 4)
+    {
+        imgdata.data[i] = 0;
+        imgdata.data[i+1] = 255;
+    }
+    ctx.putImageData(imgdata, 45, 20);
+    @assert pixel 50,25 ==~ 0,255,0,255;
+  expected: green
+
+- name: 2d.imageData.put.dirty.zero
+  desc: putImageData() with zero-sized dirty rectangle puts nothing
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50)
+    var imgdata = ctx.getImageData(0, 0, 100, 50);
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 100, 50)
+    ctx.putImageData(imgdata, 0, 0, 0, 0, 0, 0);
+    @assert pixel 50,25 ==~ 0,255,0,255;
+  expected: green
+
+- name: 2d.imageData.put.dirty.rect1
+  desc: putImageData() only modifies areas inside the dirty rectangle, using width
+    and height
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50)
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 20, 20)
+
+    var imgdata = ctx.getImageData(0, 0, 100, 50);
+
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 100, 50)
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(40, 20, 20, 20)
+    ctx.putImageData(imgdata, 40, 20, 0, 0, 20, 20);
+
+    @assert pixel 50,25 ==~ 0,255,0,255;
+    @assert pixel 35,25 ==~ 0,255,0,255;
+    @assert pixel 65,25 ==~ 0,255,0,255;
+    @assert pixel 50,15 ==~ 0,255,0,255;
+    @assert pixel 50,45 ==~ 0,255,0,255;
+  expected: green
+
+- name: 2d.imageData.put.dirty.rect2
+  desc: putImageData() only modifies areas inside the dirty rectangle, using x and
+    y
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50)
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(60, 30, 20, 20)
+
+    var imgdata = ctx.getImageData(0, 0, 100, 50);
+
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 100, 50)
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(40, 20, 20, 20)
+    ctx.putImageData(imgdata, -20, -10, 60, 30, 20, 20);
+
+    @assert pixel 50,25 ==~ 0,255,0,255;
+    @assert pixel 35,25 ==~ 0,255,0,255;
+    @assert pixel 65,25 ==~ 0,255,0,255;
+    @assert pixel 50,15 ==~ 0,255,0,255;
+    @assert pixel 50,45 ==~ 0,255,0,255;
+  expected: green
+
+- name: 2d.imageData.put.dirty.negative
+  desc: putImageData() handles negative-sized dirty rectangles correctly
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50)
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 20, 20)
+
+    var imgdata = ctx.getImageData(0, 0, 100, 50);
+
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 100, 50)
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(40, 20, 20, 20)
+    ctx.putImageData(imgdata, 40, 20, 20, 20, -20, -20);
+
+    @assert pixel 50,25 ==~ 0,255,0,255;
+    @assert pixel 35,25 ==~ 0,255,0,255;
+    @assert pixel 65,25 ==~ 0,255,0,255;
+    @assert pixel 50,15 ==~ 0,255,0,255;
+    @assert pixel 50,45 ==~ 0,255,0,255;
+  expected: green
+
+- name: 2d.imageData.put.dirty.outside
+  desc: putImageData() handles dirty rectangles outside the canvas correctly
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50)
+
+    var imgdata = ctx.getImageData(0, 0, 100, 50);
+
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 100, 50)
+
+    ctx.putImageData(imgdata, 100, 20, 20, 20, -20, -20);
+    ctx.putImageData(imgdata, 200, 200, 0, 0, 100, 50);
+    ctx.putImageData(imgdata, 40, 20, -30, -20, 30, 20);
+    ctx.putImageData(imgdata, -30, 20, 0, 0, 30, 20);
+
+    @assert pixel 50,25 ==~ 0,255,0,255;
+    @assert pixel 98,15 ==~ 0,255,0,255;
+    @assert pixel 98,25 ==~ 0,255,0,255;
+    @assert pixel 98,45 ==~ 0,255,0,255;
+    @assert pixel 1,5 ==~ 0,255,0,255;
+    @assert pixel 1,25 ==~ 0,255,0,255;
+    @assert pixel 1,45 ==~ 0,255,0,255;
+  expected: green
+
+- name: 2d.imageData.put.unchanged
+  desc: putImageData(getImageData(...), ...) has no effect
+  code: |
+    var i = 0;
+    for (var y = 0; y < 16; ++y) {
+        for (var x = 0; x < 16; ++x, ++i) {
+            ctx.fillStyle = 'rgba(' + i + ',' + (Math.floor(i*1.5) % 256) + ',' + (Math.floor(i*23.3) % 256) + ',' + (i/256) + ')';
+            ctx.fillRect(x, y, 1, 1);
+        }
+    }
+    var imgdata1 = ctx.getImageData(0.1, 0.2, 15.8, 15.9);
+    var olddata = [];
+    for (var i = 0; i < imgdata1.data.length; ++i)
+        olddata[i] = imgdata1.data[i];
+
+    ctx.putImageData(imgdata1, 0.1, 0.2);
+
+    var imgdata2 = ctx.getImageData(0.1, 0.2, 15.8, 15.9);
+    for (var i = 0; i < imgdata2.data.length; ++i) {
+        @assert olddata[i] === imgdata2.data[i];
+    }
+
+- name: 2d.imageData.put.unaffected
+  desc: putImageData() is not affected by context state
+  code: |
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 100, 50)
+    var imgdata = ctx.getImageData(0, 0, 100, 50);
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50)
+    ctx.globalAlpha = 0.1;
+    ctx.globalCompositeOperation = 'destination-atop';
+    ctx.shadowColor = '#f00';
+    ctx.shadowBlur = 1;
+    ctx.translate(100, 50);
+    ctx.scale(0.1, 0.1);
+    ctx.putImageData(imgdata, 0, 0);
+    @assert pixel 50,25 ==~ 0,255,0,255;
+  expected: green
+
+- name: 2d.imageData.put.clip
+  desc: putImageData() is not affected by clipping regions
+  code: |
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 100, 50)
+    var imgdata = ctx.getImageData(0, 0, 100, 50);
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50)
+    ctx.beginPath();
+    ctx.rect(0, 0, 50, 50);
+    ctx.clip();
+    ctx.putImageData(imgdata, 0, 0);
+    @assert pixel 25,25 ==~ 0,255,0,255;
+    @assert pixel 75,25 ==~ 0,255,0,255;
+  expected: green
+
+- name: 2d.imageData.put.path
+  desc: putImageData() does not affect the current path
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50)
+    ctx.rect(0, 0, 100, 50);
+    var imgdata = ctx.getImageData(0, 0, 100, 50);
+    ctx.putImageData(imgdata, 0, 0);
+    ctx.fillStyle = '#0f0';
+    ctx.fill();
+    @assert pixel 50,25 ==~ 0,255,0,255;
+  expected: green
diff --git a/testing/web-platform/tests/html/canvas/tools/yaml-new/reset.yaml b/testing/web-platform/tests/html/canvas/tools/yaml-new/reset.yaml
new file mode 100644
index 0000000000..4107166248
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/tools/yaml-new/reset.yaml
@@ -0,0 +1,15 @@
+- name: 2d.reset.basic
+  desc: reset clears to transparent black
+  canvasType:
+    ['HTMLCanvas']
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, ctx.canvas.width, ctx.canvas.height);
+    ctx.reset();
+    @assert pixel 0,0 == 0,0,0,0;
+    @assert pixel 50,25 == 0,0,0,0;
+    @assert pixel 25,50 == 0,0,0,0;
+    @assert pixel 100,50 == 0,0,0,0;
+    @assert pixel 0,50 == 0,0,0,0;
+    @assert pixel 100,0 == 0,0,0,0;
+    t.done();
\ No newline at end of file
diff --git a/testing/web-platform/tests/html/canvas/tools/yaml-new/scroll.yaml b/testing/web-platform/tests/html/canvas/tools/yaml-new/scroll.yaml
new file mode 100644
index 0000000000..dd088aa396
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/tools/yaml-new/scroll.yaml
@@ -0,0 +1,76 @@
+- name: 2d.scrollPathIntoView.basic
+  desc: scrollPathIntoView() works
+  canvasType:
+    ['HTMLCanvas']
+  code: |
+    var div = document.createElement('div');
+    div.style.cssText = 'width: 200vw; height: 200vh';
+    document.body.appendChild(div);
+    canvas.style.cssText = 'position: absolute; top: 100px; left: 200px; border: none;';
+    window.scrollTo(0, 0);
+
+    ctx.beginPath();
+    ctx.rect(4, 8, 16, 32);
+    ctx.scrollPathIntoView();
+    var rect = canvas.getBoundingClientRect();
+    @assert Math.round(rect.top) === -8;
+    @assert Math.round(rect.left) === 200;
+
+- name: 2d.scrollPathIntoView.verticalLR
+  desc: scrollPathIntoView() works in vertical-lr writing mode
+  canvasType:
+    ['HTMLCanvas']
+  code: |
+    document.documentElement.style.cssText = 'writing-mode: vertical-lr';
+    var div = document.createElement('div');
+    div.style.cssText = 'width: 200vw; height: 200vh';
+    document.body.appendChild(div);
+    canvas.style.cssText = 'position: absolute; top: 100px; left: 200px; border: none;';
+    window.scrollTo(0, 0);
+
+    ctx.beginPath();
+    ctx.rect(4, 8, 16, 32);
+    ctx.scrollPathIntoView();
+    var rect = canvas.getBoundingClientRect();
+    @assert Math.round(rect.top) === 100;
+    @assert Math.round(rect.left) === -4;
+
+- name: 2d.scrollPathIntoView.verticalRL
+  desc: scrollPathIntoView() works in vertical-rl writing mode
+  canvasType:
+    ['HTMLCanvas']
+  code: |
+    document.documentElement.style.cssText = 'writing-mode: vertical-rl';
+    var div = document.createElement('div');
+    div.style.cssText = 'width: 200vw; height: 200vh';
+    document.body.appendChild(div);
+    canvas.style.cssText = 'position: absolute; top: 100px; right: 200px; border: none;';
+    window.scrollTo(0, 0);
+
+    ctx.beginPath();
+    ctx.rect(4, 8, 16, 32);
+    ctx.scrollPathIntoView();
+    var rect = canvas.getBoundingClientRect();
+    var viewportWidth = document.scrollingElement.clientWidth;
+    var canvasWidth = canvas.width;
+    @assert Math.round(rect.top) === 100;
+    @assert Math.round(rect.right) === viewportWidth + (canvasWidth - 4 - 16);
+
+- name: 2d.scrollPathIntoView.path
+  desc: scrollPathIntoView() with path argument works
+  canvasType:
+    ['HTMLCanvas']
+  code: |
+    var div = document.createElement('div');
+    div.style.cssText = 'width: 200vw; height: 200vh';
+    document.body.appendChild(div);
+    canvas.style.cssText = 'position: absolute; top: 100px; left: 200px; border: none;';
+    window.scrollTo(0, 0);
+
+    var path = new Path2D();
+    path.rect(4, 8, 16, 32);
+    ctx.scrollPathIntoView(path);
+    var rect = canvas.getBoundingClientRect();
+    @assert Math.round(rect.top) === -8;
+    @assert Math.round(rect.left) === 200;
+
diff --git a/testing/web-platform/tests/html/canvas/tools/yaml-new/transformations.yaml b/testing/web-platform/tests/html/canvas/tools/yaml-new/transformations.yaml
new file mode 100644
index 0000000000..0d2265be7a
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/tools/yaml-new/transformations.yaml
@@ -0,0 +1,356 @@
+- name: 2d.transformation.order
+  desc: Transformations are applied in the right order
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+
+    ctx.scale(2, 1);
+    ctx.rotate(Math.PI / 2);
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, -50, 50, 50);
+    @assert pixel 75,25 == 0,255,0,255;
+  expected: green
+
+
+- name: 2d.transformation.scale.basic
+  desc: scale() works
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+
+    ctx.scale(2, 4);
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 50, 12.5);
+    @assert pixel 90,40 == 0,255,0,255;
+  expected: green
+
+- name: 2d.transformation.scale.zero
+  desc: scale() with a scale factor of zero works
+  code: |
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 100, 50);
+
+    ctx.save();
+    ctx.translate(50, 0);
+    ctx.scale(0, 1);
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.restore();
+
+    ctx.save();
+    ctx.translate(0, 25);
+    ctx.scale(1, 0);
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.restore();
+
+    @assert pixel 50,25 == 0,255,0,255;
+  expected: green
+
+- name: 2d.transformation.scale.negative
+  desc: scale() with negative scale factors works
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+
+    ctx.save();
+    ctx.scale(-1, 1);
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(-50, 0, 50, 50);
+    ctx.restore();
+
+    ctx.save();
+    ctx.scale(1, -1);
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(50, -50, 50, 50);
+    ctx.restore();
+    @assert pixel 25,25 == 0,255,0,255;
+    @assert pixel 75,25 == 0,255,0,255;
+  expected: green
+
+- name: 2d.transformation.scale.large
+  desc: scale() with large scale factors works
+  notes: Not really that large at all, but it hits the limits in Firefox.
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+
+    ctx.scale(1e5, 1e5);
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 1, 1);
+    @assert pixel 50,25 == 0,255,0,255;
+  expected: green
+
+- name: 2d.transformation.scale.nonfinite
+  desc: scale() with Infinity/NaN is ignored
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+
+    ctx.translate(100, 10);
+    @nonfinite ctx.scale(<0.1 Infinity -Infinity NaN>, <0.1 Infinity -Infinity NaN>);
+
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(-100, -10, 100, 50);
+
+    @assert pixel 50,25 == 0,255,0,255;
+  expected: green
+
+- name: 2d.transformation.scale.multiple
+  desc: Multiple scale()s combine
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+
+    ctx.scale(Math.sqrt(2), Math.sqrt(2));
+    ctx.scale(Math.sqrt(2), Math.sqrt(2));
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 50, 25);
+    @assert pixel 90,40 == 0,255,0,255;
+  expected: green
+
+
+- name: 2d.transformation.rotate.zero
+  desc: rotate() by 0 does nothing
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+
+    ctx.rotate(0);
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 100, 50);
+    @assert pixel 50,25 == 0,255,0,255;
+  expected: green
+
+- name: 2d.transformation.rotate.radians
+  desc: rotate() uses radians
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+
+    ctx.rotate(Math.PI); // should fail obviously if this is 3.1 degrees
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(-100, -50, 100, 50);
+    @assert pixel 50,25 == 0,255,0,255;
+  expected: green
+
+- name: 2d.transformation.rotate.direction
+  desc: rotate() is clockwise
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+
+    ctx.rotate(Math.PI / 2);
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, -100, 50, 100);
+    @assert pixel 50,25 == 0,255,0,255;
+  expected: green
+
+- name: 2d.transformation.rotate.wrap
+  desc: rotate() wraps large positive values correctly
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+
+    ctx.rotate(Math.PI * (1 + 4096)); // == pi (mod 2*pi)
+    // We need about pi +/- 0.001 in order to get correct-looking results
+    // 32-bit floats can store pi*4097 with precision 2^-10, so that should
+    // be safe enough on reasonable implementations
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(-100, -50, 100, 50);
+    @assert pixel 50,25 == 0,255,0,255;
+    @assert pixel 98,2 == 0,255,0,255;
+    @assert pixel 98,47 == 0,255,0,255;
+  expected: green
+
+- name: 2d.transformation.rotate.wrapnegative
+  desc: rotate() wraps large negative values correctly
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+
+    ctx.rotate(-Math.PI * (1 + 4096));
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(-100, -50, 100, 50);
+    @assert pixel 50,25 == 0,255,0,255;
+    @assert pixel 98,2 == 0,255,0,255;
+    @assert pixel 98,47 == 0,255,0,255;
+  expected: green
+
+- name: 2d.transformation.rotate.nonfinite
+  desc: rotate() with Infinity/NaN is ignored
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+
+    ctx.translate(100, 10);
+    @nonfinite ctx.rotate(<0.1 Infinity -Infinity NaN>);
+
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(-100, -10, 100, 50);
+
+    @assert pixel 50,25 == 0,255,0,255;
+  expected: green
+
+- name: 2d.transformation.translate.basic
+  desc: translate() works
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+
+    ctx.translate(100, 50);
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(-100, -50, 100, 50);
+    @assert pixel 90,40 == 0,255,0,255;
+  expected: green
+
+- name: 2d.transformation.translate.nonfinite
+  desc: translate() with Infinity/NaN is ignored
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+
+    ctx.translate(100, 10);
+    @nonfinite ctx.translate(<0.1 Infinity -Infinity NaN>, <0.1 Infinity -Infinity NaN>);
+
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(-100, -10, 100, 50);
+
+    @assert pixel 50,25 == 0,255,0,255;
+  expected: green
+
+
+- name: 2d.transformation.transform.identity
+  desc: transform() with the identity matrix does nothing
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+
+    ctx.transform(1,0, 0,1, 0,0);
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 100, 50);
+    @assert pixel 50,25 == 0,255,0,255;
+  expected: green
+
+- name: 2d.transformation.transform.skewed
+  desc: transform() with skewy matrix transforms correctly
+  code: |
+    // Create green with a red square ring inside it
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(20, 10, 60, 30);
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(40, 20, 20, 10);
+
+    // Draw a skewed shape to fill that gap, to make sure it is aligned correctly
+    ctx.transform(1,4, 2,3, 5,6);
+    // Post-transform coordinates:
+    //   [[20,10],[80,10],[80,40],[20,40],[20,10],[40,20],[40,30],[60,30],[60,20],[40,20],[20,10]];
+    // Hence pre-transform coordinates:
+    var pts=[[-7.4,11.2],[-43.4,59.2],[-31.4,53.2],[4.6,5.2],[-7.4,11.2],
+             [-15.4,25.2],[-11.4,23.2],[-23.4,39.2],[-27.4,41.2],[-15.4,25.2],
+             [-7.4,11.2]];
+    ctx.beginPath();
+    ctx.moveTo(pts[0][0], pts[0][1]);
+    for (var i = 0; i < pts.length; ++i)
+        ctx.lineTo(pts[i][0], pts[i][1]);
+    ctx.fill();
+    @assert pixel 21,11 == 0,255,0,255;
+    @assert pixel 79,11 == 0,255,0,255;
+    @assert pixel 21,39 == 0,255,0,255;
+    @assert pixel 79,39 == 0,255,0,255;
+    @assert pixel 39,19 == 0,255,0,255;
+    @assert pixel 61,19 == 0,255,0,255;
+    @assert pixel 39,31 == 0,255,0,255;
+    @assert pixel 61,31 == 0,255,0,255;
+  expected: green
+
+- name: 2d.transformation.transform.multiply
+  desc: transform() multiplies the CTM
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+
+    ctx.transform(1,2, 3,4, 5,6);
+    ctx.transform(-2,1, 3/2,-1/2, 1,-2);
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 100, 50);
+    @assert pixel 50,25 == 0,255,0,255;
+  expected: green
+
+- name: 2d.transformation.transform.nonfinite
+  desc: transform() with Infinity/NaN is ignored
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+
+    ctx.translate(100, 10);
+    @nonfinite ctx.transform(<0 Infinity -Infinity NaN>, <0 Infinity -Infinity NaN>, <0 Infinity -Infinity NaN>, <0 Infinity -Infinity NaN>, <0 Infinity -Infinity NaN>, <0 Infinity -Infinity NaN>);
+
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(-100, -10, 100, 50);
+
+    @assert pixel 50,25 == 0,255,0,255;
+  expected: green
+
+- name: 2d.transformation.setTransform.skewed
+  code: |
+    // Create green with a red square ring inside it
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(20, 10, 60, 30);
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(40, 20, 20, 10);
+
+    // Draw a skewed shape to fill that gap, to make sure it is aligned correctly
+    ctx.setTransform(1,4, 2,3, 5,6);
+    // Post-transform coordinates:
+    //   [[20,10],[80,10],[80,40],[20,40],[20,10],[40,20],[40,30],[60,30],[60,20],[40,20],[20,10]];
+    // Hence pre-transform coordinates:
+    var pts=[[-7.4,11.2],[-43.4,59.2],[-31.4,53.2],[4.6,5.2],[-7.4,11.2],
+             [-15.4,25.2],[-11.4,23.2],[-23.4,39.2],[-27.4,41.2],[-15.4,25.2],
+             [-7.4,11.2]];
+    ctx.beginPath();
+    ctx.moveTo(pts[0][0], pts[0][1]);
+    for (var i = 0; i < pts.length; ++i)
+        ctx.lineTo(pts[i][0], pts[i][1]);
+    ctx.fill();
+    @assert pixel 21,11 == 0,255,0,255;
+    @assert pixel 79,11 == 0,255,0,255;
+    @assert pixel 21,39 == 0,255,0,255;
+    @assert pixel 79,39 == 0,255,0,255;
+    @assert pixel 39,19 == 0,255,0,255;
+    @assert pixel 61,19 == 0,255,0,255;
+    @assert pixel 39,31 == 0,255,0,255;
+    @assert pixel 61,31 == 0,255,0,255;
+  expected: green
+
+- name: 2d.transformation.setTransform.multiple
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+
+    ctx.setTransform(1/2,0, 0,1/2, 0,0);
+    ctx.setTransform();
+    ctx.setTransform(2,0, 0,2, 0,0);
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 50, 25);
+    @assert pixel 75,35 == 0,255,0,255;
+  expected: green
+
+- name: 2d.transformation.setTransform.nonfinite
+  desc: setTransform() with Infinity/NaN is ignored
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+
+    ctx.translate(100, 10);
+    @nonfinite ctx.setTransform(<0 Infinity -Infinity NaN>, <0 Infinity -Infinity NaN>, <0 Infinity -Infinity NaN>, <0 Infinity -Infinity NaN>, <0 Infinity -Infinity NaN>, <0 Infinity -Infinity NaN>);
+
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(-100, -10, 100, 50);
+
+    @assert pixel 50,25 == 0,255,0,255;
+  expected: green
diff --git a/testing/web-platform/tests/html/canvas/tools/yaml-new/video.yaml b/testing/web-platform/tests/html/canvas/tools/yaml-new/video.yaml
new file mode 100644
index 0000000000..f9b48fb8da
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/tools/yaml-new/video.yaml
@@ -0,0 +1,10 @@
+- name: 2d.video.invalid
+  desc: Verify test doesn't crash with invalid video.
+  canvasType:
+    ['HTMLCanvas']
+  code: |
+    var v = document.createElement('video');
+    v.play();
+    // Test is deliberately not waiting for the 'playing' event to fire.
+    ctx.createPattern(v, 'repeat-x');
+    ctx.drawImage(v, 0, 0);
diff --git a/testing/web-platform/tests/html/canvas/tools/yaml/element/drawing-text-to-the-canvas.yaml b/testing/web-platform/tests/html/canvas/tools/yaml/element/drawing-text-to-the-canvas.yaml
new file mode 100644
index 0000000000..3443ad35b3
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/tools/yaml/element/drawing-text-to-the-canvas.yaml
@@ -0,0 +1,970 @@
+- name: 2d.text.draw.fill.basic
+  desc: fillText draws filled text
+  manual:
+  code: |
+    ctx.fillStyle = '#000';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.fillStyle = '#0f0';
+    ctx.strokeStyle = '#f00';
+    ctx.font = '35px Arial, sans-serif';
+    ctx.fillText('PASS', 5, 35);
+  expected: &passfill |
+    size 100 50
+    cr.set_source_rgb(0, 0, 0)
+    cr.rectangle(0, 0, 100, 50)
+    cr.fill()
+    cr.set_source_rgb(0, 1, 0)
+    cr.select_font_face("Arial")
+    cr.set_font_size(35)
+    cr.translate(5, 35)
+    cr.text_path("PASS")
+    cr.fill()
+
+- name: 2d.text.draw.fill.unaffected
+  desc: fillText does not start a new path or subpath
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+
+    ctx.moveTo(0, 0);
+    ctx.lineTo(100, 0);
+
+    ctx.font = '35px Arial, sans-serif';
+    ctx.fillText('FAIL', 5, 35);
+
+    ctx.lineTo(100, 50);
+    ctx.lineTo(0, 50);
+    ctx.fillStyle = '#0f0';
+    ctx.fill();
+
+    @assert pixel 50,25 == 0,255,0,255;
+    @assert pixel 5,45 == 0,255,0,255;
+  expected: green
+
+- name: 2d.text.draw.fill.rtl
+  desc: fillText respects Right-To-Left Override characters
+  manual:
+  code: |
+    ctx.fillStyle = '#000';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.fillStyle = '#0f0';
+    ctx.strokeStyle = '#f00';
+    ctx.font = '35px Arial, sans-serif';
+    ctx.fillText('\u202eFAIL \xa0 \xa0 SSAP', 5, 35);
+  expected: *passfill
+- name: 2d.text.draw.fill.maxWidth.large
+  desc: fillText handles maxWidth correctly
+  manual:
+  code: |
+    ctx.fillStyle = '#000';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.fillStyle = '#0f0';
+    ctx.font = '35px Arial, sans-serif';
+    ctx.fillText('PASS', 5, 35, 200);
+  expected: *passfill
+- name: 2d.text.draw.fill.maxWidth.small
+  desc: fillText handles maxWidth correctly
+  code: |
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.fillStyle = '#f00';
+    ctx.font = '35px Arial, sans-serif';
+    ctx.fillText('fail fail fail fail fail', -100, 35, 90);
+    _assertGreen(ctx, 100, 50);
+  expected: green
+
+- name: 2d.text.draw.fill.maxWidth.zero
+  desc: fillText handles maxWidth correctly
+  code: |
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.fillStyle = '#f00';
+    ctx.font = '35px Arial, sans-serif';
+    ctx.fillText('fail fail fail fail fail', 5, 35, 0);
+    _assertGreen(ctx, 100, 50);
+  expected: green
+
+- name: 2d.text.draw.fill.maxWidth.negative
+  desc: fillText handles maxWidth correctly
+  code: |
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.fillStyle = '#f00';
+    ctx.font = '35px Arial, sans-serif';
+    ctx.fillText('fail fail fail fail fail', 5, 35, -1);
+    _assertGreen(ctx, 100, 50);
+  expected: green
+
+- name: 2d.text.draw.fill.maxWidth.NaN
+  desc: fillText handles maxWidth correctly
+  code: |
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.fillStyle = '#f00';
+    ctx.font = '35px Arial, sans-serif';
+    ctx.fillText('fail fail fail fail fail', 5, 35, NaN);
+    _assertGreen(ctx, 100, 50);
+  expected: green
+
+- name: 2d.text.draw.stroke.basic
+  desc: strokeText draws stroked text
+  manual:
+  code: |
+    ctx.fillStyle = '#000';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.strokeStyle = '#0f0';
+    ctx.fillStyle = '#f00';
+    ctx.lineWidth = 1;
+    ctx.font = '35px Arial, sans-serif';
+    ctx.strokeText('PASS', 5, 35);
+  expected: |
+    size 100 50
+    cr.set_source_rgb(0, 0, 0)
+    cr.rectangle(0, 0, 100, 50)
+    cr.fill()
+    cr.set_source_rgb(0, 1, 0)
+    cr.select_font_face("Arial")
+    cr.set_font_size(35)
+    cr.set_line_width(1)
+    cr.translate(5, 35)
+    cr.text_path("PASS")
+    cr.stroke()
+
+- name: 2d.text.draw.stroke.unaffected
+  desc: strokeText does not start a new path or subpath
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+
+    ctx.moveTo(0, 0);
+    ctx.lineTo(100, 0);
+
+    ctx.font = '35px Arial, sans-serif';
+    ctx.strokeStyle = '#f00';
+    ctx.strokeText('FAIL', 5, 35);
+
+    ctx.lineTo(100, 50);
+    ctx.lineTo(0, 50);
+    ctx.fillStyle = '#0f0';
+    ctx.fill();
+
+    @assert pixel 50,25 == 0,255,0,255;
+    @assert pixel 5,45 == 0,255,0,255;
+  expected: green
+
+- name: 2d.text.draw.kern.consistent
+  desc: Stroked and filled text should have exactly the same kerning so it overlaps
+  manual:
+  code: |
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.fillStyle = '#f00';
+    ctx.strokeStyle = '#0f0';
+    ctx.lineWidth = 3;
+    ctx.font = '20px Arial, sans-serif';
+    ctx.fillText('VAVAVAVAVAVAVA', -50, 25);
+    ctx.fillText('ToToToToToToTo', -50, 45);
+    ctx.strokeText('VAVAVAVAVAVAVA', -50, 25);
+    ctx.strokeText('ToToToToToToTo', -50, 45);
+  expected: green
+
+# CanvasTest is:
+#   A = (0, 0) to (1em, 0.75em)       (above baseline)
+#   B = (0, 0) to (1em, -0.25em)      (below baseline)
+#   C = (0, -0.25em) to (1em, 0.75em) (the em square) plus some Xs above and below
+#   D = (0, -0.25em) to (1em, 0.75em) (the em square) plus some Xs left and right
+#   E = (0, -0.25em) to (1em, 0.75em) (the em square)
+#   space = empty, 1em wide
+#
+# At 50px, "E" will fill the canvas vertically
+# At 67px, "A" will fill the canvas vertically
+#
+# Ideographic baseline  is 0.125em above alphabetic
+# Mathematical baseline is 0.375em above alphabetic
+# Hanging baseline      is 0.500em above alphabetic
+
+# WebKit doesn't block onload on font loads, so we try to make it a bit more reliable
+# by waiting with step_timeout after load before drawing
+
+- name: 2d.text.draw.fill.maxWidth.fontface
+  desc: fillText works on @font-face fonts
+  fonts:
+  - CanvasTest
+  code: |
+    ctx.font = '50px CanvasTest';
+    deferTest();
+    step_timeout(t.step_func_done(function () {
+        ctx.fillStyle = '#0f0';
+        ctx.fillRect(0, 0, 100, 50);
+        ctx.fillStyle = '#f00';
+        ctx.fillText('EEEE', -50, 37.5, 40);
+        @assert pixel 5,5 ==~ 0,255,0,255;
+        @assert pixel 95,5 ==~ 0,255,0,255;
+        @assert pixel 25,25 ==~ 0,255,0,255;
+        @assert pixel 75,25 ==~ 0,255,0,255;
+    }), 500);
+  expected: green
+
+- name: 2d.text.draw.fill.maxWidth.bound
+  desc: fillText handles maxWidth based on line size, not bounding box size
+  fonts:
+  - CanvasTest
+  code: |
+    ctx.font = '50px CanvasTest';
+    deferTest();
+    step_timeout(t.step_func_done(function () {
+        ctx.fillStyle = '#f00';
+        ctx.fillRect(0, 0, 100, 50);
+        ctx.fillStyle = '#0f0';
+        ctx.fillText('DD', 0, 37.5, 100);
+        @assert pixel 5,5 ==~ 0,255,0,255;
+        @assert pixel 95,5 ==~ 0,255,0,255;
+        @assert pixel 25,25 ==~ 0,255,0,255;
+        @assert pixel 75,25 ==~ 0,255,0,255;
+    }), 500);
+  expected: green
+
+- name: 2d.text.draw.fontface
+  fonts:
+  - CanvasTest
+  code: |
+    ctx.font = '67px CanvasTest';
+    deferTest();
+    step_timeout(t.step_func_done(function () {
+        ctx.fillStyle = '#f00';
+        ctx.fillRect(0, 0, 100, 50);
+        ctx.fillStyle = '#0f0';
+        ctx.fillText('AA', 0, 50);
+        @assert pixel 5,5 ==~ 0,255,0,255;
+        @assert pixel 95,5 ==~ 0,255,0,255;
+        @assert pixel 25,25 ==~ 0,255,0,255;
+        @assert pixel 75,25 ==~ 0,255,0,255;
+    }), 500);
+  expected: green
+
+- name: 2d.text.draw.fontface.repeat
+  desc: Draw with the font immediately, then wait a bit until and draw again. (This
+    crashes some version of WebKit.)
+  fonts:
+  - CanvasTest
+  fonthack: 0
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.font = '67px CanvasTest';
+    ctx.fillStyle = '#0f0';
+    ctx.fillText('AA', 0, 50);
+    deferTest();
+    step_timeout(t.step_func_done(function () {
+        ctx.fillText('AA', 0, 50);
+        @assert pixel 5,5 ==~ 0,255,0,255;
+        @assert pixel 95,5 ==~ 0,255,0,255;
+        @assert pixel 25,25 ==~ 0,255,0,255;
+        @assert pixel 75,25 ==~ 0,255,0,255;
+    }), 500);
+  expected: green
+
+- name: 2d.text.draw.fontface.notinpage
+  desc: '@font-face fonts should work even if they are not used in the page'
+  fonts:
+  - CanvasTest
+  fonthack: 0
+  code: |
+    ctx.font = '67px CanvasTest';
+    deferTest();
+    step_timeout(t.step_func_done(function () {
+        ctx.fillStyle = '#f00';
+        ctx.fillRect(0, 0, 100, 50);
+        ctx.fillStyle = '#0f0';
+        ctx.fillText('AA', 0, 50);
+        @assert pixel 5,5 ==~ 0,255,0,255; @moz-todo
+        @assert pixel 95,5 ==~ 0,255,0,255; @moz-todo
+        @assert pixel 25,25 ==~ 0,255,0,255; @moz-todo
+        @assert pixel 75,25 ==~ 0,255,0,255; @moz-todo
+    }), 500);
+  expected: green
+
+- name: 2d.text.draw.align.left
+  desc: textAlign left is the left of the first em square (not the bounding box)
+  fonts:
+  - CanvasTest
+  code: |
+    ctx.font = '50px CanvasTest';
+    deferTest();
+    step_timeout(t.step_func_done(function () {
+        ctx.fillStyle = '#f00';
+        ctx.fillRect(0, 0, 100, 50);
+        ctx.fillStyle = '#0f0';
+        ctx.textAlign = 'left';
+        ctx.fillText('DD', 0, 37.5);
+        @assert pixel 5,5 ==~ 0,255,0,255;
+        @assert pixel 95,5 ==~ 0,255,0,255;
+        @assert pixel 25,25 ==~ 0,255,0,255;
+        @assert pixel 75,25 ==~ 0,255,0,255;
+        @assert pixel 5,45 ==~ 0,255,0,255;
+        @assert pixel 95,45 ==~ 0,255,0,255;
+    }), 500);
+  expected: green
+
+- name: 2d.text.draw.align.right
+  desc: textAlign right is the right of the last em square (not the bounding box)
+  fonts:
+  - CanvasTest
+  code: |
+    ctx.font = '50px CanvasTest';
+    deferTest();
+    step_timeout(t.step_func_done(function () {
+        ctx.fillStyle = '#f00';
+        ctx.fillRect(0, 0, 100, 50);
+        ctx.fillStyle = '#0f0';
+        ctx.textAlign = 'right';
+        ctx.fillText('DD', 100, 37.5);
+        @assert pixel 5,5 ==~ 0,255,0,255;
+        @assert pixel 95,5 ==~ 0,255,0,255;
+        @assert pixel 25,25 ==~ 0,255,0,255;
+        @assert pixel 75,25 ==~ 0,255,0,255;
+        @assert pixel 5,45 ==~ 0,255,0,255;
+        @assert pixel 95,45 ==~ 0,255,0,255;
+    }), 500);
+  expected: green
+
+- name: 2d.text.draw.align.start.ltr
+  desc: textAlign start with ltr is the left edge
+  fonts:
+  - CanvasTest
+  canvas: dir="ltr"
+  code: |
+    ctx.font = '50px CanvasTest';
+    deferTest();
+    step_timeout(t.step_func_done(function () {
+        ctx.fillStyle = '#f00';
+        ctx.fillRect(0, 0, 100, 50);
+        ctx.fillStyle = '#0f0';
+        ctx.textAlign = 'start';
+        ctx.fillText('DD', 0, 37.5);
+        @assert pixel 5,5 ==~ 0,255,0,255;
+        @assert pixel 95,5 ==~ 0,255,0,255;
+        @assert pixel 25,25 ==~ 0,255,0,255;
+        @assert pixel 75,25 ==~ 0,255,0,255;
+        @assert pixel 5,45 ==~ 0,255,0,255;
+        @assert pixel 95,45 ==~ 0,255,0,255;
+    }), 500);
+  expected: green
+
+- name: 2d.text.draw.align.start.rtl
+  desc: textAlign start with rtl is the right edge
+  fonts:
+  - CanvasTest
+  canvas: dir="rtl"
+  code: |
+    ctx.font = '50px CanvasTest';
+    deferTest();
+    step_timeout(t.step_func_done(function () {
+        ctx.fillStyle = '#f00';
+        ctx.fillRect(0, 0, 100, 50);
+        ctx.fillStyle = '#0f0';
+        ctx.textAlign = 'start';
+        ctx.fillText('DD', 100, 37.5);
+        @assert pixel 5,5 ==~ 0,255,0,255;
+        @assert pixel 95,5 ==~ 0,255,0,255;
+        @assert pixel 25,25 ==~ 0,255,0,255;
+        @assert pixel 75,25 ==~ 0,255,0,255;
+        @assert pixel 5,45 ==~ 0,255,0,255;
+        @assert pixel 95,45 ==~ 0,255,0,255;
+    }), 500);
+  expected: green
+
+- name: 2d.text.draw.align.end.ltr
+  desc: textAlign end with ltr is the right edge
+  fonts:
+  - CanvasTest
+  canvas: dir="ltr"
+  code: |
+    ctx.font = '50px CanvasTest';
+    deferTest();
+    step_timeout(t.step_func_done(function () {
+        ctx.fillStyle = '#f00';
+        ctx.fillRect(0, 0, 100, 50);
+        ctx.fillStyle = '#0f0';
+        ctx.textAlign = 'end';
+        ctx.fillText('DD', 100, 37.5);
+        @assert pixel 5,5 ==~ 0,255,0,255;
+        @assert pixel 95,5 ==~ 0,255,0,255;
+        @assert pixel 25,25 ==~ 0,255,0,255;
+        @assert pixel 75,25 ==~ 0,255,0,255;
+        @assert pixel 5,45 ==~ 0,255,0,255;
+        @assert pixel 95,45 ==~ 0,255,0,255;
+    }), 500);
+  expected: green
+
+- name: 2d.text.draw.align.end.rtl
+  desc: textAlign end with rtl is the left edge
+  fonts:
+  - CanvasTest
+  canvas: dir="rtl"
+  code: |
+    ctx.font = '50px CanvasTest';
+    deferTest();
+    step_timeout(t.step_func_done(function () {
+        ctx.fillStyle = '#f00';
+        ctx.fillRect(0, 0, 100, 50);
+        ctx.fillStyle = '#0f0';
+        ctx.textAlign = 'end';
+        ctx.fillText('DD', 0, 37.5);
+        @assert pixel 5,5 ==~ 0,255,0,255;
+        @assert pixel 95,5 ==~ 0,255,0,255;
+        @assert pixel 25,25 ==~ 0,255,0,255;
+        @assert pixel 75,25 ==~ 0,255,0,255;
+        @assert pixel 5,45 ==~ 0,255,0,255;
+        @assert pixel 95,45 ==~ 0,255,0,255;
+    }), 500);
+  expected: green
+
+- name: 2d.text.draw.align.center
+  desc: textAlign center is the center of the em squares (not the bounding box)
+  fonts:
+  - CanvasTest
+  code: |
+    ctx.font = '50px CanvasTest';
+    deferTest();
+    step_timeout(t.step_func_done(function () {
+        ctx.fillStyle = '#f00';
+        ctx.fillRect(0, 0, 100, 50);
+        ctx.fillStyle = '#0f0';
+        ctx.textAlign = 'center';
+        ctx.fillText('DD', 50, 37.5);
+        @assert pixel 5,5 ==~ 0,255,0,255;
+        @assert pixel 95,5 ==~ 0,255,0,255;
+        @assert pixel 25,25 ==~ 0,255,0,255;
+        @assert pixel 75,25 ==~ 0,255,0,255;
+        @assert pixel 5,45 ==~ 0,255,0,255;
+        @assert pixel 95,45 ==~ 0,255,0,255;
+    }), 500);
+  expected: green
+
+
+- name: 2d.text.draw.space.basic
+  desc: U+0020 is rendered the correct size (1em wide)
+  fonts:
+  - CanvasTest
+  code: |
+    ctx.font = '50px CanvasTest';
+    deferTest();
+    step_timeout(t.step_func_done(function () {
+        ctx.fillStyle = '#f00';
+        ctx.fillRect(0, 0, 100, 50);
+        ctx.fillStyle = '#0f0';
+        ctx.fillText('E EE', -100, 37.5);
+        @assert pixel 25,25 ==~ 0,255,0,255;
+        @assert pixel 75,25 ==~ 0,255,0,255;
+    }), 500);
+  expected: green
+
+- name: 2d.text.draw.space.collapse.nonspace
+  desc: Non-space characters are not converted to U+0020 and collapsed
+  fonts:
+  - CanvasTest
+  code: |
+    ctx.font = '50px CanvasTest';
+    deferTest();
+    step_timeout(t.step_func_done(function () {
+        ctx.fillStyle = '#f00';
+        ctx.fillRect(0, 0, 100, 50);
+        ctx.fillStyle = '#0f0';
+        ctx.fillText('E\x0b EE', -150, 37.5);
+        @assert pixel 25,25 ==~ 0,255,0,255;
+        @assert pixel 75,25 ==~ 0,255,0,255;
+    }), 500);
+  expected: green
+
+- name: 2d.text.measure.width.basic
+  desc: The width of character is same as font used
+  fonts:
+  - CanvasTest
+  code: |
+    deferTest();
+    var f = new FontFace("CanvasTest", "/fonts/CanvasTest.ttf");
+    document.fonts.add(f);
+    document.fonts.ready.then(() => {
+        step_timeout(t.step_func_done(function () {
+            ctx.font = '50px CanvasTest';
+            @assert ctx.measureText('A').width === 50;
+            @assert ctx.measureText('AA').width === 100;
+            @assert ctx.measureText('ABCD').width === 200;
+
+            ctx.font = '100px CanvasTest';
+            @assert ctx.measureText('A').width === 100;
+        }), 500);
+    });
+
+- name: 2d.text.measure.width.empty
+  desc: The empty string has zero width
+  fonts:
+  - CanvasTest
+  code: |
+    deferTest();
+    var f = new FontFace("CanvasTest", "/fonts/CanvasTest.ttf");
+    document.fonts.add(f);
+    document.fonts.ready.then(() => {
+        step_timeout(t.step_func_done(function () {
+            ctx.font = '50px CanvasTest';
+            @assert ctx.measureText("").width === 0;
+        }), 500);
+    });
+
+- name: 2d.text.measure.advances
+  desc: Testing width advances
+  fonts:
+  - CanvasTest
+  code: |
+    deferTest();
+    var f = new FontFace("CanvasTest", "/fonts/CanvasTest.ttf");
+    document.fonts.add(f);
+    document.fonts.ready.then(() => {
+        step_timeout(t.step_func_done(function () {
+            ctx.font = '50px CanvasTest';
+            ctx.direction = 'ltr';
+            ctx.align = 'left'
+            // Some platforms may return '-0'.
+            @assert Math.abs(ctx.measureText('Hello').advances[0]) === 0;
+            // Different platforms may render text slightly different.
+            @assert ctx.measureText('Hello').advances[1] >= 36;
+            @assert ctx.measureText('Hello').advances[2] >= 58;
+            @assert ctx.measureText('Hello').advances[3] >= 70;
+            @assert ctx.measureText('Hello').advances[4] >= 80;
+
+            var tm = ctx.measureText('Hello');
+            @assert ctx.measureText('Hello').advances[0] === tm.advances[0];
+            @assert ctx.measureText('Hello').advances[1] === tm.advances[1];
+            @assert ctx.measureText('Hello').advances[2] === tm.advances[2];
+            @assert ctx.measureText('Hello').advances[3] === tm.advances[3];
+            @assert ctx.measureText('Hello').advances[4] === tm.advances[4];
+        }), 500);
+    });
+
+- name: 2d.text.measure.actualBoundingBox
+  desc: Testing actualBoundingBox
+  fonts:
+  - CanvasTest
+  code: |
+    deferTest();
+    var f = new FontFace("CanvasTest", "/fonts/CanvasTest.ttf");
+    document.fonts.add(f);
+    document.fonts.ready.then(() => {
+        step_timeout(t.step_func_done(function () {
+            ctx.font = '50px CanvasTest';
+            ctx.direction = 'ltr';
+            ctx.align = 'left'
+            ctx.baseline = 'alphabetic'
+            // Different platforms may render text slightly different.
+            // Values that are nominally expected to be zero might actually vary by a pixel or so
+            // if the UA accounts for antialiasing at glyph edges, so we allow a slight deviation.
+            @assert Math.abs(ctx.measureText('A').actualBoundingBoxLeft) <= 1;
+            @assert ctx.measureText('A').actualBoundingBoxRight >= 50;
+            @assert ctx.measureText('A').actualBoundingBoxAscent >= 35;
+            @assert Math.abs(ctx.measureText('A').actualBoundingBoxDescent) <= 1;
+
+            @assert ctx.measureText('D').actualBoundingBoxLeft >= 48;
+            @assert ctx.measureText('D').actualBoundingBoxLeft <= 52;
+            @assert ctx.measureText('D').actualBoundingBoxRight >= 75;
+            @assert ctx.measureText('D').actualBoundingBoxRight <= 80;
+            @assert ctx.measureText('D').actualBoundingBoxAscent >= 35;
+            @assert ctx.measureText('D').actualBoundingBoxAscent <= 40;
+            @assert ctx.measureText('D').actualBoundingBoxDescent >= 12;
+            @assert ctx.measureText('D').actualBoundingBoxDescent <= 15;
+
+            @assert Math.abs(ctx.measureText('ABCD').actualBoundingBoxLeft) <= 1;
+            @assert ctx.measureText('ABCD').actualBoundingBoxRight >= 200;
+            @assert ctx.measureText('ABCD').actualBoundingBoxAscent >= 85;
+            @assert ctx.measureText('ABCD').actualBoundingBoxDescent >= 37;
+        }), 500);
+    });
+
+- name: 2d.text.measure.fontBoundingBox
+  desc: Testing fontBoundingBox
+  fonts:
+  - CanvasTest
+  code: |
+    deferTest();
+    var f = new FontFace("CanvasTest", "/fonts/CanvasTest.ttf");
+    document.fonts.add(f);
+    document.fonts.ready.then(() => {
+        step_timeout(t.step_func_done(function () {
+            ctx.font = '50px CanvasTest';
+            ctx.direction = 'ltr';
+            ctx.align = 'left'
+            @assert ctx.measureText('A').fontBoundingBoxAscent === 85;
+            @assert ctx.measureText('A').fontBoundingBoxDescent === 39;
+
+            @assert ctx.measureText('ABCD').fontBoundingBoxAscent === 85;
+            @assert ctx.measureText('ABCD').fontBoundingBoxDescent === 39;
+        }), 500);
+    });
+
+- name: 2d.text.measure.fontBoundingBox.ahem
+  desc: Testing fontBoundingBox for font ahem
+  fonts:
+  - Ahem
+  code: |
+    deferTest();
+    var f = new FontFace("Ahem", "/fonts/Ahem.ttf");
+    document.fonts.add(f);
+    document.fonts.ready.then(() => {
+        step_timeout(t.step_func_done(function () {
+            ctx.font = '50px Ahem';
+            ctx.direction = 'ltr';
+            ctx.align = 'left'
+            @assert ctx.measureText('A').fontBoundingBoxAscent === 40;
+            @assert ctx.measureText('A').fontBoundingBoxDescent === 10;
+
+            @assert ctx.measureText('ABCD').fontBoundingBoxAscent === 40;
+            @assert ctx.measureText('ABCD').fontBoundingBoxDescent === 10;
+        }), 500);
+    });
+
+- name: 2d.text.measure.emHeights
+  desc: Testing emHeights
+  fonts:
+  - CanvasTest
+  code: |
+    deferTest();
+    var f = new FontFace("CanvasTest", "/fonts/CanvasTest.ttf");
+    document.fonts.add(f);
+    document.fonts.ready.then(() => {
+         step_timeout(t.step_func_done(function () {
+            ctx.font = '50px CanvasTest';
+            ctx.direction = 'ltr';
+            ctx.align = 'left'
+            @assert ctx.measureText('A').emHeightAscent === 37.5;
+            @assert ctx.measureText('A').emHeightDescent === 12.5;
+            @assert ctx.measureText('A').emHeightDescent + ctx.measureText('A').emHeightAscent === 50;
+
+            @assert ctx.measureText('ABCD').emHeightAscent === 37.5;
+            @assert ctx.measureText('ABCD').emHeightDescent === 12.5;
+            @assert ctx.measureText('ABCD').emHeightDescent + ctx.measureText('ABCD').emHeightAscent === 50;
+        }), 500);
+    });
+
+- name: 2d.text.measure.baselines
+  desc: Testing baselines
+  fonts:
+  - CanvasTest
+  code: |
+    deferTest();
+    var f = new FontFace("CanvasTest", "/fonts/CanvasTest.ttf");
+    document.fonts.add(f);
+    document.fonts.ready.then(() => {
+         step_timeout(t.step_func_done(function () {
+            ctx.font = '50px CanvasTest';
+            ctx.direction = 'ltr';
+            ctx.align = 'left'
+            @assert Math.abs(ctx.measureText('A').getBaselines().alphabetic) === 0;
+            @assert ctx.measureText('A').getBaselines().ideographic === -39;
+            @assert ctx.measureText('A').getBaselines().hanging === 68;
+
+            @assert Math.abs(ctx.measureText('ABCD').getBaselines().alphabetic) === 0;
+            @assert ctx.measureText('ABCD').getBaselines().ideographic === -39;
+            @assert ctx.measureText('ABCD').getBaselines().hanging === 68;
+        }), 500);
+    });
+
+- name: 2d.text.drawing.style.spacing
+  desc: Testing letter spacing and word spacing
+  code: |
+    @assert ctx.letterSpacing === '0px';
+    @assert ctx.wordSpacing === '0px';
+
+    ctx.letterSpacing = '3px';
+    @assert ctx.letterSpacing === '3px';
+    @assert ctx.wordSpacing === '0px';
+
+    ctx.wordSpacing = '5px';
+    @assert ctx.letterSpacing === '3px';
+    @assert ctx.wordSpacing === '5px';
+
+    ctx.letterSpacing = '-1px';
+    ctx.wordSpacing = '-1px';
+    @assert ctx.letterSpacing === '-1px';
+    @assert ctx.wordSpacing === '-1px';
+
+    ctx.letterSpacing = '1PX';
+    ctx.wordSpacing = '1EM';
+    @assert ctx.letterSpacing === '1px';
+    @assert ctx.wordSpacing === '1em';
+
+- name: 2d.text.drawing.style.nonfinite.spacing
+  desc: Testing letter spacing and word spacing with nonfinite inputs
+  code: |
+    @assert ctx.letterSpacing === '0px';
+    @assert ctx.wordSpacing === '0px';
+
+    function test_word_spacing(value) {
+      ctx.wordSpacing = value;
+      ctx.letterSpacing = value;
+      @assert ctx.wordSpacing === '0px';
+      @assert ctx.letterSpacing === '0px';
+    }
+    @nonfinite test_word_spacing(<0 NaN Infinity -Infinity>);
+
+- name: 2d.text.drawing.style.invalid.spacing
+  desc: Testing letter spacing and word spacing with invalid units
+  code: |
+    @assert ctx.letterSpacing === '0px';
+    @assert ctx.wordSpacing === '0px';
+
+    function test_word_spacing(value) {
+      ctx.wordSpacing = value;
+      ctx.letterSpacing = value;
+      @assert ctx.wordSpacing === '0px';
+      @assert ctx.letterSpacing === '0px';
+    }
+    @nonfinite test_word_spacing(< '0s' '1min' '1deg' '1pp' 'initial' 'inherit' 'normal' 'none'>);
+
+- name: 2d.text.drawing.style.letterSpacing.measure
+  desc: Testing letter spacing and word spacing
+  code: |
+    @assert ctx.letterSpacing === '0px';
+    @assert ctx.wordSpacing === '0px';
+    var width_normal = ctx.measureText('Hello World').width;
+
+    function test_letter_spacing(value, difference_spacing, epsilon) {
+      ctx.letterSpacing = value;
+      @assert ctx.letterSpacing === value;
+      @assert ctx.wordSpacing === '0px';
+      width_with_letter_spacing = ctx.measureText('Hello World').width;
+      assert_approx_equals(width_with_letter_spacing, width_normal + difference_spacing, epsilon, "letter spacing doesn't work.");
+    }
+
+    // The first value is the letter Spacing to be set, the second value the
+    // change in length of string 'Hello World', note that there are 11 letters
+    // in 'hello world', so the length difference is always letterSpacing * 11.
+    // and the third value is the acceptable differencee for the length change,
+    // note that unit such as 1cm/1mm doesn't map to an exact pixel value.
+    test_cases = [['3px', 33, 0.1],
+                  ['5px', 55, 0.1],
+                  ['-2px', -22, 0.1],
+                  ['1em', 110, 0.1],
+                  ['1in', 1056, 0.1],
+                  ['-0.1cm', -41.65, 0.2],
+                  ['-0.6mm', -24,95, 0.2]]
+
+    for (const test_case of test_cases) {
+      test_letter_spacing(test_case[0], test_case[1], test_case[2]);
+    }
+
+- name: 2d.text.drawing.style.wordSpacing.measure
+  desc: Testing if word spacing is working properly
+  code: |
+    @assert ctx.letterSpacing === '0px';
+    @assert ctx.wordSpacing === '0px';
+    var width_normal = ctx.measureText('Hello World, again').width;
+
+    function test_word_spacing(value, difference_spacing, epsilon) {
+      ctx.wordSpacing = value;
+      @assert ctx.letterSpacing === '0px';
+      @assert ctx.wordSpacing === value;
+      width_with_word_spacing = ctx.measureText('Hello World, again').width;
+      assert_approx_equals(width_with_word_spacing, width_normal + difference_spacing, epsilon, "word spacing doesn't work.");
+    }
+
+    // The first value is the word Spacing to be set, the second value the
+    // change in length of string 'Hello World', note that there are 2 words
+    // in 'Hello World, again', so the length difference is always wordSpacing * 2.
+    // and the third value is the acceptable differencee for the length change,
+    // note that unit such as 1cm/1mm doesn't map to an exact pixel value.
+    test_cases = [['3px', 6, 0.1],
+                  ['5px', 10, 0.1],
+                  ['-2px', -4, 0.1],
+                  ['1em', 20, 0.1],
+                  ['1in', 192, 0.1],
+                  ['-0.1cm', -7.57, 0.2],
+                  ['-0.6mm', -4.54, 0.2]]
+
+    for (const test_case of test_cases) {
+      test_word_spacing(test_case[0], test_case[1], test_case[2]);
+    }
+
+- name: 2d.text.drawing.style.letterSpacing.change.font
+  desc: Set letter spacing and word spacing to font dependent value and verify it works after font change.
+  code: |
+    @assert ctx.letterSpacing === '0px';
+    @assert ctx.wordSpacing === '0px';
+    // Get the width for 'Hello World' at default size, 10px.
+    var width_normal = ctx.measureText('Hello World').width;
+
+    ctx.letterSpacing = '1em';
+    @assert ctx.letterSpacing === '1em';
+    // 1em = 10px. Add 10px after each letter in "Hello World",
+    // makes it 110px longer.
+    var width_with_spacing = ctx.measureText('Hello World').width;
+    assert_approx_equals(width_with_spacing, width_normal + 110, 0.1, "letterSpacing incorrect before font change");
+
+    // Changing font to 20px. Without resetting the spacing, 1em letterSpacing
+    // is now 20px, so it's suppose to be 220px longer without any letterSpacing set.
+    ctx.font = '20px serif';
+    width_with_spacing = ctx.measureText('Hello World').width;
+    // Now calculate the reference spacing for "Hello World" with no spacing.
+    ctx.letterSpacing = '0em';
+    width_normal = ctx.measureText('Hello World').width;
+    assert_approx_equals(width_with_spacing, width_normal + 220, 0.1, "letterSpacing incorrect after font change");
+
+
+- name: 2d.text.drawing.style.wordSpacing.change.font
+  desc: Set word spacing and word spacing to font dependent value and verify it works after font change.
+  code: |
+    @assert ctx.letterSpacing === '0px';
+    @assert ctx.wordSpacing === '0px';
+    // Get the width for 'Hello World, again' at default size, 10px.
+    var width_normal = ctx.measureText('Hello World, again').width;
+
+    ctx.wordSpacing = '1em';
+    @assert ctx.wordSpacing === '1em';
+    // 1em = 10px. Add 10px after each word in "Hello World, again",
+    // makes it 20px longer.
+    var width_with_spacing = ctx.measureText('Hello World, again').width;
+    @assert width_with_spacing === width_normal + 20;
+
+    // Changing font to 20px. Without resetting the spacing, 1em wordSpacing
+    // is now 20px, so it's suppose to be 40px longer without any wordSpacing set.
+    ctx.font = '20px serif';
+    width_with_spacing = ctx.measureText('Hello World, again').width;
+    // Now calculate the reference spacing for "Hello World, again" with no spacing.
+    ctx.wordSpacing = '0em';
+    width_normal = ctx.measureText('Hello World, again').width;
+    @assert width_with_spacing === width_normal + 40;
+
+- name: 2d.text.drawing.style.fontKerning
+  desc: Testing basic functionalities of fontKerning for canvas
+  code: |
+    @assert ctx.fontKerning === "auto";
+    ctx.fontKerning = "normal";
+    @assert ctx.fontKerning === "normal";
+    width_normal = ctx.measureText("TAWATAVA").width;
+    ctx.fontKerning = "none";
+    @assert ctx.fontKerning === "none";
+    width_none = ctx.measureText("TAWATAVA").width;
+    @assert width_normal < width_none;
+
+- name: 2d.text.drawing.style.fontKerning.with.uppercase
+  desc: Testing basic functionalities of fontKerning for canvas
+  code: |
+    @assert ctx.fontKerning === "auto";
+    ctx.fontKerning = "Normal";
+    @assert ctx.fontKerning === "normal";
+    ctx.fontKerning = "Auto";
+    ctx.fontKerning = "normal";
+    @assert ctx.fontKerning === "normal";
+    ctx.fontKerning = "Auto";
+    ctx.fontKerning = "noRmal";
+    @assert ctx.fontKerning === "normal";
+    ctx.fontKerning = "Auto";
+    ctx.fontKerning = "NoRMal";
+    @assert ctx.fontKerning === "normal";
+    ctx.fontKerning = "Auto";
+    ctx.fontKerning = "NORMAL";
+    @assert ctx.fontKerning === "normal";
+
+    ctx.fontKerning = "None";
+    @assert ctx.fontKerning === "none";
+    ctx.fontKerning = "Auto";
+    ctx.fontKerning = "none";
+    @assert ctx.fontKerning === "none";
+    ctx.fontKerning = "Auto";
+    ctx.fontKerning = "nOne";
+    @assert ctx.fontKerning === "none";
+    ctx.fontKerning = "Auto";
+    ctx.fontKerning = "nonE";
+    @assert ctx.fontKerning === "none";
+    ctx.fontKerning = "Auto";
+    ctx.fontKerning = "NONE";
+    @assert ctx.fontKerning === "none";
+
+- name: 2d.text.drawing.style.fontVariant.settings
+  desc: Testing basic functionalities of fontKerning for canvas
+  code: |
+    // Setting fontVariantCaps with lower cases
+    @assert ctx.fontVariantCaps === "normal";
+
+    ctx.fontVariantCaps = "normal";
+    @assert ctx.fontVariantCaps === "normal";
+
+    ctx.fontVariantCaps = "small-caps";
+    @assert ctx.fontVariantCaps === "small-caps";
+
+    ctx.fontVariantCaps = "all-small-caps";
+    @assert ctx.fontVariantCaps === "all-small-caps";
+
+    ctx.fontVariantCaps = "petite-caps";
+    @assert ctx.fontVariantCaps === "petite-caps";
+
+    ctx.fontVariantCaps = "all-petite-caps";
+    @assert ctx.fontVariantCaps === "all-petite-caps";
+
+    ctx.fontVariantCaps = "unicase";
+    @assert ctx.fontVariantCaps === "unicase";
+
+    ctx.fontVariantCaps = "titling-caps";
+    @assert ctx.fontVariantCaps === "titling-caps";
+
+    // Setting fontVariantCaps with lower cases and upper cases word.
+    ctx.fontVariantCaps = "nORmal";
+    @assert ctx.fontVariantCaps === "normal";
+
+    ctx.fontVariantCaps = "smaLL-caps";
+    @assert ctx.fontVariantCaps === "small-caps";
+
+    ctx.fontVariantCaps = "all-small-CAPS";
+    @assert ctx.fontVariantCaps === "all-small-caps";
+
+    ctx.fontVariantCaps = "pEtitE-caps";
+    @assert ctx.fontVariantCaps === "petite-caps";
+
+    ctx.fontVariantCaps = "All-Petite-Caps";
+    @assert ctx.fontVariantCaps === "all-petite-caps";
+
+    ctx.fontVariantCaps = "uNIcase";
+    @assert ctx.fontVariantCaps === "unicase";
+
+    ctx.fontVariantCaps = "titling-CAPS";
+    @assert ctx.fontVariantCaps === "titling-caps";
+
+    // Setting fontVariantCaps with non-existing font variant.
+    ctx.fontVariantCaps = "abcd";
+    @assert ctx.fontVariantCaps === "titling-caps";
+
+- name: 2d.text.drawing.style.textRendering.settings
+  desc: Testing basic functionalities of textRendering in Canvas
+  code: |
+    // Setting textRendering with lower cases
+    @assert ctx.textRendering === "auto";
+
+    ctx.textRendering = "auto";
+    @assert ctx.textRendering === "auto";
+
+    ctx.textRendering = "optimizespeed";
+    @assert ctx.textRendering === "optimizeSpeed";
+
+    ctx.textRendering = "optimizelegibility";
+    @assert ctx.textRendering === "optimizeLegibility";
+
+    ctx.textRendering = "geometricprecision";
+    @assert ctx.textRendering === "geometricPrecision";
+
+    // Setting textRendering with lower cases and upper cases word.
+    ctx.textRendering = "aUto";
+    @assert ctx.textRendering === "auto";
+
+    ctx.textRendering = "OPtimizeSpeed";
+    @assert ctx.textRendering === "optimizeSpeed";
+
+    ctx.textRendering = "OPtimizELEgibility";
+    @assert ctx.textRendering === "optimizeLegibility";
+
+    ctx.textRendering = "GeometricPrecision";
+    @assert ctx.textRendering === "geometricPrecision";
+
+    // Setting textRendering with non-existing font variant.
+    ctx.textRendering = "abcd";
+    @assert ctx.textRendering === "geometricPrecision";
+
+# TODO: shadows, alpha, composite, clip
diff --git a/testing/web-platform/tests/html/canvas/tools/yaml/element/fill-and-stroke-styles.yaml b/testing/web-platform/tests/html/canvas/tools/yaml/element/fill-and-stroke-styles.yaml
new file mode 100644
index 0000000000..9d35dde661
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/tools/yaml/element/fill-and-stroke-styles.yaml
@@ -0,0 +1,1998 @@
+- name: 2d.fillStyle.parse.current.basic
+  desc: currentColor is computed from the canvas element
+  code: |
+    canvas.setAttribute('style', 'color: #0f0');
+    ctx.fillStyle = '#f00';
+    ctx.fillStyle = 'currentColor';
+    ctx.fillRect(0, 0, 100, 50);
+    @assert pixel 50,25 == 0,255,0,255;
+  expected: green
+
+- name: 2d.fillStyle.parse.current.changed
+  desc: currentColor is computed when the attribute is set, not when it is painted
+  code: |
+    canvas.setAttribute('style', 'color: #0f0');
+    ctx.fillStyle = '#f00';
+    ctx.fillStyle = 'currentColor';
+    canvas.setAttribute('style', 'color: #f00');
+    ctx.fillRect(0, 0, 100, 50);
+    @assert pixel 50,25 == 0,255,0,255;
+  expected: green
+
+- name: 2d.fillStyle.parse.current.removed
+  desc: currentColor is solid black when the canvas element is not in a document
+  code: |
+    // Try not to let it undetectably incorrectly pick up opaque-black
+    // from other parts of the document:
+    document.body.parentNode.setAttribute('style', 'color: #f00');
+    document.body.setAttribute('style', 'color: #f00');
+    canvas.setAttribute('style', 'color: #f00');
+
+    var canvas2 = document.createElement('canvas');
+    var ctx2 = canvas2.getContext('2d');
+    ctx2.fillStyle = '#f00';
+    ctx2.fillStyle = 'currentColor';
+    ctx2.fillRect(0, 0, 100, 50);
+    ctx.drawImage(canvas2, 0, 0);
+
+    document.body.parentNode.removeAttribute('style');
+    document.body.removeAttribute('style');
+
+    @assert pixel 50,25 == 0,0,0,255;
+  expected: |
+    size 100 50
+    cr.set_source_rgb(0, 0, 0)
+    cr.rectangle(0, 0, 100, 50)
+    cr.fill()
+
+- name: 2d.fillStyle.invalidstring
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.fillStyle = '#0f0';
+    ctx.fillStyle = 'invalid';
+    ctx.fillRect(0, 0, 100, 50);
+    @assert pixel 50,25 == 0,255,0,255;
+  expected: green
+
+- name: 2d.fillStyle.invalidtype
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.fillStyle = '#0f0';
+    ctx.fillStyle = null;
+    ctx.fillRect(0, 0, 100, 50);
+    @assert pixel 50,25 == 0,255,0,255;
+  expected: green
+
+- name: 2d.fillStyle.get.solid
+  code: |
+    ctx.fillStyle = '#fa0';
+    @assert ctx.fillStyle === '#ffaa00';
+
+- name: 2d.fillStyle.get.semitransparent
+  code: |
+    ctx.fillStyle = 'rgba(255,255,255,0.45)';
+    @assert ctx.fillStyle =~ /^rgba\(255, 255, 255, 0\.4\d+\)$/;
+
+- name: 2d.fillStyle.get.halftransparent
+  code: |
+    ctx.fillStyle = 'rgba(255,255,255,0.5)';
+    @assert ctx.fillStyle === 'rgba(255, 255, 255, 0.5)';
+
+- name: 2d.fillStyle.get.transparent
+  code: |
+    ctx.fillStyle = 'rgba(0,0,0,0)';
+    @assert ctx.fillStyle === 'rgba(0, 0, 0, 0)';
+
+- name: 2d.fillStyle.default
+  code: |
+    @assert ctx.fillStyle === '#000000';
+
+- name: 2d.fillStyle.toStringFunctionCallback
+  desc: Passing a function in to ctx.fillStyle or ctx.strokeStyle with a toString callback works as specified
+  code: |
+    ctx.fillStyle = { toString: function() { return "#008000"; } };
+    @assert ctx.fillStyle === "#008000";
+    ctx.fillStyle = {};
+    @assert ctx.fillStyle === "#008000";
+    ctx.fillStyle = 800000;
+    @assert ctx.fillStyle === "#008000";
+    @assert throws TypeError ctx.fillStyle = { toString: function() { throw new TypeError; } };
+    ctx.strokeStyle = { toString: function() { return "#008000"; } };
+    @assert ctx.strokeStyle === "#008000";
+    ctx.strokeStyle = {};
+    @assert ctx.strokeStyle === "#008000";
+    ctx.strokeStyle = 800000;
+    @assert ctx.strokeStyle === "#008000";
+    @assert throws TypeError ctx.strokeStyle = { toString: function() { throw new TypeError; } };
+
+- name: 2d.strokeStyle.default
+  code: |
+    @assert ctx.strokeStyle === '#000000';
+
+
+- name: 2d.gradient.object.type
+  desc: window.CanvasGradient exists and has the right properties
+  notes: &bindings Defined in "Web IDL" (draft)
+  code: |
+    @assert window.CanvasGradient !== undefined;
+    @assert window.CanvasGradient.prototype.addColorStop !== undefined;
+
+- name: 2d.gradient.object.return
+  desc: createLinearGradient() and createRadialGradient() returns objects implementing
+    CanvasGradient
+  code: |
+    window.CanvasGradient.prototype.thisImplementsCanvasGradient = true;
+
+    var g1 = ctx.createLinearGradient(0, 0, 100, 0);
+    @assert g1.addColorStop !== undefined;
+    @assert g1.thisImplementsCanvasGradient === true;
+
+    var g2 = ctx.createRadialGradient(0, 0, 10, 0, 0, 20);
+    @assert g2.addColorStop !== undefined;
+    @assert g2.thisImplementsCanvasGradient === true;
+
+- name: 2d.gradient.interpolate.solid
+  code: |
+    var g = ctx.createLinearGradient(0, 0, 100, 0);
+    g.addColorStop(0, '#0f0');
+    g.addColorStop(1, '#0f0');
+    ctx.fillStyle = g;
+    ctx.fillRect(0, 0, 100, 50);
+    @assert pixel 50,25 == 0,255,0,255;
+  expected: green
+
+- name: 2d.gradient.interpolate.color
+  code: |
+    var g = ctx.createLinearGradient(0, 0, 100, 0);
+    g.addColorStop(0, '#ff0');
+    g.addColorStop(1, '#00f');
+    ctx.fillStyle = g;
+    ctx.fillRect(0, 0, 100, 50);
+    @assert pixel 25,25 ==~ 191,191,63,255 +/- 3;
+    @assert pixel 50,25 ==~ 127,127,127,255 +/- 3;
+    @assert pixel 75,25 ==~ 63,63,191,255 +/- 3;
+  expected: |
+    size 100 50
+    g = cairo.LinearGradient(0, 0, 100, 0)
+    g.add_color_stop_rgb(0, 1,1,0)
+    g.add_color_stop_rgb(1, 0,0,1)
+    cr.set_source(g)
+    cr.rectangle(0, 0, 100, 50)
+    cr.fill()
+
+- name: 2d.gradient.interpolate.alpha
+  code: |
+    ctx.fillStyle = '#ff0';
+    ctx.fillRect(0, 0, 100, 50);
+    var g = ctx.createLinearGradient(0, 0, 100, 0);
+    g.addColorStop(0, 'rgba(0,0,255, 0)');
+    g.addColorStop(1, 'rgba(0,0,255, 1)');
+    ctx.fillStyle = g;
+    ctx.fillRect(0, 0, 100, 50);
+    @assert pixel 25,25 ==~ 191,191,63,255 +/- 3;
+    @assert pixel 50,25 ==~ 127,127,127,255 +/- 3;
+    @assert pixel 75,25 ==~ 63,63,191,255 +/- 3;
+  expected: |
+    size 100 50
+    g = cairo.LinearGradient(0, 0, 100, 0)
+    g.add_color_stop_rgb(0, 1,1,0)
+    g.add_color_stop_rgb(1, 0,0,1)
+    cr.set_source(g)
+    cr.rectangle(0, 0, 100, 50)
+    cr.fill()
+
+- name: 2d.gradient.interpolate.coloralpha
+  code: |
+    var g = ctx.createLinearGradient(0, 0, 100, 0);
+    g.addColorStop(0, 'rgba(255,255,0, 0)');
+    g.addColorStop(1, 'rgba(0,0,255, 1)');
+    ctx.fillStyle = g;
+    ctx.fillRect(0, 0, 100, 50);
+    @assert pixel 25,25 ==~ 190,190,65,65 +/- 3;
+    @assert pixel 50,25 ==~ 126,126,128,128 +/- 3;
+    @assert pixel 75,25 ==~ 62,62,192,192 +/- 3;
+  expected: |
+    size 100 50
+    g = cairo.LinearGradient(0, 0, 100, 0)
+    g.add_color_stop_rgba(0, 1,1,0, 0)
+    g.add_color_stop_rgba(1, 0,0,1, 1)
+    cr.set_source(g)
+    cr.rectangle(0, 0, 100, 50)
+    cr.fill()
+
+- name: 2d.gradient.interpolate.outside
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+
+    var g = ctx.createLinearGradient(25, 0, 75, 0);
+    g.addColorStop(0.4, '#0f0');
+    g.addColorStop(0.6, '#0f0');
+
+    ctx.fillStyle = g;
+    ctx.fillRect(0, 0, 100, 50);
+    @assert pixel 20,25 ==~ 0,255,0,255;
+    @assert pixel 50,25 ==~ 0,255,0,255;
+    @assert pixel 80,25 ==~ 0,255,0,255;
+  expected: green
+
+- name: 2d.gradient.interpolate.zerosize.fill
+  code: |
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 100, 50);
+
+    var g = ctx.createLinearGradient(50, 25, 50, 25); // zero-length line (undefined direction)
+    g.addColorStop(0, '#f00');
+    g.addColorStop(1, '#f00');
+    ctx.fillStyle = g;
+    ctx.rect(0, 0, 100, 50);
+    ctx.fill();
+    @assert pixel 40,20 == 0,255,0,255;
+  expected: green
+
+- name: 2d.gradient.interpolate.zerosize.stroke
+  code: |
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 100, 50);
+
+    var g = ctx.createLinearGradient(50, 25, 50, 25); // zero-length line (undefined direction)
+    g.addColorStop(0, '#f00');
+    g.addColorStop(1, '#f00');
+    ctx.strokeStyle = g;
+    ctx.rect(20, 20, 60, 10);
+    ctx.stroke();
+    @assert pixel 19,19 == 0,255,0,255;
+    @assert pixel 20,19 == 0,255,0,255;
+    @assert pixel 21,19 == 0,255,0,255;
+    @assert pixel 19,20 == 0,255,0,255;
+    @assert pixel 20,20 == 0,255,0,255;
+    @assert pixel 21,20 == 0,255,0,255;
+    @assert pixel 19,21 == 0,255,0,255;
+    @assert pixel 20,21 == 0,255,0,255;
+    @assert pixel 21,21 == 0,255,0,255;
+  expected: green
+
+- name: 2d.gradient.interpolate.zerosize.fillRect
+  code: |
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 100, 50);
+
+    var g = ctx.createLinearGradient(50, 25, 50, 25); // zero-length line (undefined direction)
+    g.addColorStop(0, '#f00');
+    g.addColorStop(1, '#f00');
+    ctx.fillStyle = g;
+    ctx.fillRect(0, 0, 100, 50);
+    @assert pixel 40,20 == 0,255,0,255; @moz-todo
+  expected: green
+
+- name: 2d.gradient.interpolate.zerosize.strokeRect
+  code: |
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 100, 50);
+
+    var g = ctx.createLinearGradient(50, 25, 50, 25); // zero-length line (undefined direction)
+    g.addColorStop(0, '#f00');
+    g.addColorStop(1, '#f00');
+    ctx.strokeStyle = g;
+    ctx.strokeRect(20, 20, 60, 10);
+    @assert pixel 19,19 == 0,255,0,255;
+    @assert pixel 20,19 == 0,255,0,255;
+    @assert pixel 21,19 == 0,255,0,255;
+    @assert pixel 19,20 == 0,255,0,255;
+    @assert pixel 20,20 == 0,255,0,255;
+    @assert pixel 21,20 == 0,255,0,255;
+    @assert pixel 19,21 == 0,255,0,255;
+    @assert pixel 20,21 == 0,255,0,255;
+    @assert pixel 21,21 == 0,255,0,255;
+  expected: green
+
+- name: 2d.gradient.interpolate.zerosize.fillText
+  code: |
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 100, 50);
+
+    var g = ctx.createLinearGradient(50, 25, 50, 25); // zero-length line (undefined direction)
+    g.addColorStop(0, '#f00');
+    g.addColorStop(1, '#f00');
+    ctx.fillStyle = g;
+    ctx.font = '100px sans-serif';
+    ctx.fillText("AA", 0, 50);
+    _assertGreen(ctx, 100, 50);
+  expected: green
+
+- name: 2d.gradient.interpolate.zerosize.strokeText
+  code: |
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 100, 50);
+
+    var g = ctx.createLinearGradient(50, 25, 50, 25); // zero-length line (undefined direction)
+    g.addColorStop(0, '#f00');
+    g.addColorStop(1, '#f00');
+    ctx.strokeStyle = g;
+    ctx.font = '100px sans-serif';
+    ctx.strokeText("AA", 0, 50);
+    _assertGreen(ctx, 100, 50);
+  expected: green
+
+
+- name: 2d.gradient.interpolate.vertical
+  code: |
+    var g = ctx.createLinearGradient(0, 0, 0, 50);
+    g.addColorStop(0, '#ff0');
+    g.addColorStop(1, '#00f');
+    ctx.fillStyle = g;
+    ctx.fillRect(0, 0, 100, 50);
+    @assert pixel 50,12 ==~ 191,191,63,255 +/- 10;
+    @assert pixel 50,25 ==~ 127,127,127,255 +/- 5;
+    @assert pixel 50,37 ==~ 63,63,191,255 +/- 10;
+  expected: |
+    size 100 50
+    g = cairo.LinearGradient(0, 0, 0, 50)
+    g.add_color_stop_rgb(0, 1,1,0)
+    g.add_color_stop_rgb(1, 0,0,1)
+    cr.set_source(g)
+    cr.rectangle(0, 0, 100, 50)
+    cr.fill()
+
+- name: 2d.gradient.interpolate.multiple
+  code: |
+    canvas.width = 200;
+    var g = ctx.createLinearGradient(0, 0, 200, 0);
+    g.addColorStop(0, '#ff0');
+    g.addColorStop(0.5, '#0ff');
+    g.addColorStop(1, '#f0f');
+    ctx.fillStyle = g;
+    ctx.fillRect(0, 0, 200, 50);
+    @assert pixel 50,25 ==~ 127,255,127,255 +/- 3;
+    @assert pixel 100,25 ==~ 0,255,255,255 +/- 3;
+    @assert pixel 150,25 ==~ 127,127,255,255 +/- 3;
+  expected: |
+    size 200 50
+    g = cairo.LinearGradient(0, 0, 200, 0)
+    g.add_color_stop_rgb(0.0, 1,1,0)
+    g.add_color_stop_rgb(0.5, 0,1,1)
+    g.add_color_stop_rgb(1.0, 1,0,1)
+    cr.set_source(g)
+    cr.rectangle(0, 0, 200, 50)
+    cr.fill()
+
+- name: 2d.gradient.interpolate.overlap
+  code: |
+    canvas.width = 200;
+    var g = ctx.createLinearGradient(0, 0, 200, 0);
+    g.addColorStop(0, '#f00');
+    g.addColorStop(0, '#ff0');
+    g.addColorStop(0.25, '#00f');
+    g.addColorStop(0.25, '#0f0');
+    g.addColorStop(0.25, '#0f0');
+    g.addColorStop(0.25, '#0f0');
+    g.addColorStop(0.25, '#ff0');
+    g.addColorStop(0.5, '#00f');
+    g.addColorStop(0.5, '#0f0');
+    g.addColorStop(0.75, '#00f');
+    g.addColorStop(0.75, '#f00');
+    g.addColorStop(0.75, '#ff0');
+    g.addColorStop(0.5, '#0f0');
+    g.addColorStop(0.5, '#0f0');
+    g.addColorStop(0.5, '#ff0');
+    g.addColorStop(1, '#00f');
+    ctx.fillStyle = g;
+    ctx.fillRect(0, 0, 200, 50);
+    @assert pixel 49,25 ==~ 0,0,255,255 +/- 16;
+    @assert pixel 51,25 ==~ 255,255,0,255 +/- 16;
+    @assert pixel 99,25 ==~ 0,0,255,255 +/- 16;
+    @assert pixel 101,25 ==~ 255,255,0,255 +/- 16;
+    @assert pixel 149,25 ==~ 0,0,255,255 +/- 16;
+    @assert pixel 151,25 ==~ 255,255,0,255 +/- 16;
+  expected: |
+    size 200 50
+    g = cairo.LinearGradient(0, 0, 50, 0)
+    g.add_color_stop_rgb(0, 1,1,0)
+    g.add_color_stop_rgb(1, 0,0,1)
+    cr.set_source(g)
+    cr.rectangle(0, 0, 50, 50)
+    cr.fill()
+
+    g = cairo.LinearGradient(50, 0, 100, 0)
+    g.add_color_stop_rgb(0, 1,1,0)
+    g.add_color_stop_rgb(1, 0,0,1)
+    cr.set_source(g)
+    cr.rectangle(50, 0, 50, 50)
+    cr.fill()
+
+    g = cairo.LinearGradient(100, 0, 150, 0)
+    g.add_color_stop_rgb(0, 1,1,0)
+    g.add_color_stop_rgb(1, 0,0,1)
+    cr.set_source(g)
+    cr.rectangle(100, 0, 50, 50)
+    cr.fill()
+
+    g = cairo.LinearGradient(150, 0, 200, 0)
+    g.add_color_stop_rgb(0, 1,1,0)
+    g.add_color_stop_rgb(1, 0,0,1)
+    cr.set_source(g)
+    cr.rectangle(150, 0, 50, 50)
+    cr.fill()
+
+- name: 2d.gradient.interpolate.overlap2
+  code: |
+    var g = ctx.createLinearGradient(0, 0, 100, 0);
+    var ps = [ 0, 1/10, 1/4, 1/3, 1/2, 3/4, 1 ];
+    for (var p = 0; p < ps.length; ++p)
+    {
+            g.addColorStop(ps[p], '#0f0');
+            for (var i = 0; i < 15; ++i)
+                    g.addColorStop(ps[p], '#f00');
+            g.addColorStop(ps[p], '#0f0');
+    }
+    ctx.fillStyle = g;
+    ctx.fillRect(0, 0, 100, 50);
+    @assert pixel 1,25 == 0,255,0,255;
+    @assert pixel 30,25 == 0,255,0,255;
+    @assert pixel 40,25 == 0,255,0,255;
+    @assert pixel 60,25 == 0,255,0,255;
+    @assert pixel 80,25 == 0,255,0,255;
+  expected: green
+
+- name: 2d.gradient.empty
+  code: |
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 100, 50);
+    var g = ctx.createLinearGradient(0, 0, 0, 50);
+    ctx.fillStyle = g;
+    ctx.fillRect(0, 0, 100, 50);
+    @assert pixel 50,25 ==~ 0,255,0,255;
+  expected: green
+
+- name: 2d.gradient.object.update
+  code: |
+    var g = ctx.createLinearGradient(-100, 0, 200, 0);
+    g.addColorStop(0, '#f00');
+    g.addColorStop(1, '#f00');
+    ctx.fillStyle = g;
+    ctx.fillRect(0, 0, 100, 50);
+    g.addColorStop(0.1, '#0f0');
+    g.addColorStop(0.9, '#0f0');
+    ctx.fillRect(0, 0, 100, 50);
+    @assert pixel 50,25 ==~ 0,255,0,255;
+  expected: green
+
+- name: 2d.gradient.object.compare
+  code: |
+    var g1 = ctx.createLinearGradient(0, 0, 100, 0);
+    var g2 = ctx.createLinearGradient(0, 0, 100, 0);
+    @assert g1 !== g2;
+    ctx.fillStyle = g1;
+    @assert ctx.fillStyle === g1;
+
+- name: 2d.gradient.object.crosscanvas
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+    var g = document.createElement('canvas').getContext('2d').createLinearGradient(0, 0, 100, 0);
+    g.addColorStop(0, '#0f0');
+    g.addColorStop(1, '#0f0');
+    ctx.fillStyle = g;
+    ctx.fillRect(0, 0, 100, 50);
+    @assert pixel 50,25 ==~ 0,255,0,255;
+  expected: green
+
+- name: 2d.gradient.object.current
+  code: |
+    canvas.setAttribute('style', 'color: #f00');
+
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+
+    var g = ctx.createLinearGradient(0, 0, 100, 0);
+    g.addColorStop(0, 'currentColor');
+    g.addColorStop(1, 'currentColor');
+    ctx.fillStyle = g;
+    ctx.fillRect(0, 0, 100, 50);
+    @assert pixel 50,25 ==~ 0,0,0,255;
+  expected: |
+    size 100 50
+    cr.set_source_rgb(0, 0, 0)
+    cr.rectangle(0, 0, 100, 50)
+    cr.fill()
+
+- name: 2d.gradient.object.invalidoffset
+  code: |
+    var g = ctx.createLinearGradient(0, 0, 100, 0);
+    @assert throws INDEX_SIZE_ERR g.addColorStop(-1, '#000');
+    @assert throws INDEX_SIZE_ERR g.addColorStop(2, '#000');
+    @assert throws TypeError g.addColorStop(Infinity, '#000');
+    @assert throws TypeError g.addColorStop(-Infinity, '#000');
+    @assert throws TypeError g.addColorStop(NaN, '#000');
+
+- name: 2d.gradient.object.invalidcolor
+  code: |
+    var g = ctx.createLinearGradient(0, 0, 100, 0);
+    @assert throws SYNTAX_ERR g.addColorStop(0, "");
+    @assert throws SYNTAX_ERR g.addColorStop(0, 'rgb(NaN%, NaN%, NaN%)');
+    @assert throws SYNTAX_ERR g.addColorStop(0, 'null');
+    @assert throws SYNTAX_ERR g.addColorStop(0, 'undefined');
+    @assert throws SYNTAX_ERR g.addColorStop(0, null);
+    @assert throws SYNTAX_ERR g.addColorStop(0, undefined);
+
+    var g = ctx.createRadialGradient(0, 0, 0, 100, 0, 0);
+    @assert throws SYNTAX_ERR g.addColorStop(0, "");
+    @assert throws SYNTAX_ERR g.addColorStop(0, 'rgb(NaN%, NaN%, NaN%)');
+    @assert throws SYNTAX_ERR g.addColorStop(0, 'null');
+    @assert throws SYNTAX_ERR g.addColorStop(0, 'undefined');
+    @assert throws SYNTAX_ERR g.addColorStop(0, null);
+    @assert throws SYNTAX_ERR g.addColorStop(0, undefined);
+
+
+- name: 2d.gradient.linear.nonfinite
+  desc: createLinearGradient() throws TypeError if arguments are not finite
+  notes: *bindings
+  code: |
+    @nonfinite @assert throws TypeError ctx.createLinearGradient(<0 Infinity -Infinity NaN>, <0 Infinity -Infinity NaN>, <1 Infinity -Infinity NaN>, <0 Infinity -Infinity NaN>);
+
+- name: 2d.gradient.linear.transform.1
+  desc: Linear gradient coordinates are relative to the coordinate space at the time
+    of filling
+  code: |
+    var g = ctx.createLinearGradient(0, 0, 200, 0);
+    g.addColorStop(0, '#f00');
+    g.addColorStop(0.25, '#0f0');
+    g.addColorStop(0.75, '#0f0');
+    g.addColorStop(1, '#f00');
+    ctx.fillStyle = g;
+    ctx.translate(-50, 0);
+    ctx.fillRect(50, 0, 100, 50);
+    @assert pixel 25,25 == 0,255,0,255;
+    @assert pixel 50,25 == 0,255,0,255;
+    @assert pixel 75,25 == 0,255,0,255;
+  expected: green
+
+- name: 2d.gradient.linear.transform.2
+  desc: Linear gradient coordinates are relative to the coordinate space at the time
+    of filling
+  code: |
+    ctx.translate(100, 0);
+    var g = ctx.createLinearGradient(0, 0, 200, 0);
+    g.addColorStop(0, '#f00');
+    g.addColorStop(0.25, '#0f0');
+    g.addColorStop(0.75, '#0f0');
+    g.addColorStop(1, '#f00');
+    ctx.fillStyle = g;
+    ctx.translate(-150, 0);
+    ctx.fillRect(50, 0, 100, 50);
+    @assert pixel 25,25 == 0,255,0,255;
+    @assert pixel 50,25 == 0,255,0,255;
+    @assert pixel 75,25 == 0,255,0,255;
+  expected: green
+
+- name: 2d.gradient.linear.transform.3
+  desc: Linear gradient transforms do not experience broken caching effects
+  code: |
+    var g = ctx.createLinearGradient(0, 0, 200, 0);
+    g.addColorStop(0, '#f00');
+    g.addColorStop(0.25, '#0f0');
+    g.addColorStop(0.75, '#0f0');
+    g.addColorStop(1, '#f00');
+    ctx.fillStyle = g;
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.translate(-50, 0);
+    ctx.fillRect(50, 0, 100, 50);
+    @assert pixel 25,25 == 0,255,0,255;
+    @assert pixel 50,25 == 0,255,0,255;
+    @assert pixel 75,25 == 0,255,0,255;
+  expected: green
+
+- name: 2d.gradient.radial.negative
+  desc: createRadialGradient() throws INDEX_SIZE_ERR if either radius is negative
+  code: |
+    @assert throws INDEX_SIZE_ERR ctx.createRadialGradient(0, 0, -0.1, 0, 0, 1);
+    @assert throws INDEX_SIZE_ERR ctx.createRadialGradient(0, 0, 1, 0, 0, -0.1);
+    @assert throws INDEX_SIZE_ERR ctx.createRadialGradient(0, 0, -0.1, 0, 0, -0.1);
+
+- name: 2d.gradient.radial.nonfinite
+  desc: createRadialGradient() throws TypeError if arguments are not finite
+  notes: *bindings
+  code: |
+    @nonfinite @assert throws TypeError ctx.createRadialGradient(<0 Infinity -Infinity NaN>, <0 Infinity -Infinity NaN>, <1 Infinity -Infinity NaN>, <0 Infinity -Infinity NaN>, <0 Infinity -Infinity NaN>, <1 Infinity -Infinity NaN>);
+
+- name: 2d.gradient.radial.inside1
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+
+    var g = ctx.createRadialGradient(50, 25, 100, 50, 25, 200);
+    g.addColorStop(0, '#0f0');
+    g.addColorStop(1, '#f00');
+    ctx.fillStyle = g;
+    ctx.fillRect(0, 0, 100, 50);
+
+    @assert pixel 1,1 == 0,255,0,255;
+    @assert pixel 50,1 == 0,255,0,255;
+    @assert pixel 98,1 == 0,255,0,255;
+    @assert pixel 1,25 == 0,255,0,255;
+    @assert pixel 50,25 == 0,255,0,255;
+    @assert pixel 98,25 == 0,255,0,255;
+    @assert pixel 1,48 == 0,255,0,255;
+    @assert pixel 50,48 == 0,255,0,255;
+    @assert pixel 98,48 == 0,255,0,255;
+  expected: green
+
+- name: 2d.gradient.radial.inside2
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+
+    var g = ctx.createRadialGradient(50, 25, 200, 50, 25, 100);
+    g.addColorStop(0, '#f00');
+    g.addColorStop(1, '#0f0');
+    ctx.fillStyle = g;
+    ctx.fillRect(0, 0, 100, 50);
+
+    @assert pixel 1,1 == 0,255,0,255;
+    @assert pixel 50,1 == 0,255,0,255;
+    @assert pixel 98,1 == 0,255,0,255;
+    @assert pixel 1,25 == 0,255,0,255;
+    @assert pixel 50,25 == 0,255,0,255;
+    @assert pixel 98,25 == 0,255,0,255;
+    @assert pixel 1,48 == 0,255,0,255;
+    @assert pixel 50,48 == 0,255,0,255;
+    @assert pixel 98,48 == 0,255,0,255;
+  expected: green
+
+- name: 2d.gradient.radial.inside3
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+
+    var g = ctx.createRadialGradient(50, 25, 200, 50, 25, 100);
+    g.addColorStop(0, '#f00');
+    g.addColorStop(0.993, '#f00');
+    g.addColorStop(1, '#0f0');
+    ctx.fillStyle = g;
+    ctx.fillRect(0, 0, 100, 50);
+
+    @assert pixel 1,1 == 0,255,0,255;
+    @assert pixel 50,1 == 0,255,0,255;
+    @assert pixel 98,1 == 0,255,0,255;
+    @assert pixel 1,25 == 0,255,0,255;
+    @assert pixel 50,25 == 0,255,0,255;
+    @assert pixel 98,25 == 0,255,0,255;
+    @assert pixel 1,48 == 0,255,0,255;
+    @assert pixel 50,48 == 0,255,0,255;
+    @assert pixel 98,48 == 0,255,0,255;
+  expected: green
+
+- name: 2d.gradient.radial.outside1
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+
+    var g = ctx.createRadialGradient(200, 25, 10, 200, 25, 20);
+    g.addColorStop(0, '#f00');
+    g.addColorStop(1, '#0f0');
+    ctx.fillStyle = g;
+    ctx.fillRect(0, 0, 100, 50);
+
+    @assert pixel 1,1 == 0,255,0,255;
+    @assert pixel 50,1 == 0,255,0,255;
+    @assert pixel 98,1 == 0,255,0,255;
+    @assert pixel 1,25 == 0,255,0,255;
+    @assert pixel 50,25 == 0,255,0,255;
+    @assert pixel 98,25 == 0,255,0,255;
+    @assert pixel 1,48 == 0,255,0,255;
+    @assert pixel 50,48 == 0,255,0,255;
+    @assert pixel 98,48 == 0,255,0,255;
+  expected: green
+
+- name: 2d.gradient.radial.outside2
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+
+    var g = ctx.createRadialGradient(200, 25, 20, 200, 25, 10);
+    g.addColorStop(0, '#0f0');
+    g.addColorStop(1, '#f00');
+    ctx.fillStyle = g;
+    ctx.fillRect(0, 0, 100, 50);
+
+    @assert pixel 1,1 == 0,255,0,255;
+    @assert pixel 50,1 == 0,255,0,255;
+    @assert pixel 98,1 == 0,255,0,255;
+    @assert pixel 1,25 == 0,255,0,255;
+    @assert pixel 50,25 == 0,255,0,255;
+    @assert pixel 98,25 == 0,255,0,255;
+    @assert pixel 1,48 == 0,255,0,255;
+    @assert pixel 50,48 == 0,255,0,255;
+    @assert pixel 98,48 == 0,255,0,255;
+  expected: green
+
+- name: 2d.gradient.radial.outside3
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+
+    var g = ctx.createRadialGradient(200, 25, 20, 200, 25, 10);
+    g.addColorStop(0, '#0f0');
+    g.addColorStop(0.001, '#f00');
+    g.addColorStop(1, '#f00');
+    ctx.fillStyle = g;
+    ctx.fillRect(0, 0, 100, 50);
+
+    @assert pixel 1,1 == 0,255,0,255;
+    @assert pixel 50,1 == 0,255,0,255;
+    @assert pixel 98,1 == 0,255,0,255;
+    @assert pixel 1,25 == 0,255,0,255;
+    @assert pixel 50,25 == 0,255,0,255;
+    @assert pixel 98,25 == 0,255,0,255;
+    @assert pixel 1,48 == 0,255,0,255;
+    @assert pixel 50,48 == 0,255,0,255;
+    @assert pixel 98,48 == 0,255,0,255;
+  expected: green
+
+- name: 2d.gradient.radial.touch1
+  code: |
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 100, 50);
+
+    var g = ctx.createRadialGradient(150, 25, 50, 200, 25, 100);
+    g.addColorStop(0, '#f00');
+    g.addColorStop(1, '#f00');
+    ctx.fillStyle = g;
+    ctx.fillRect(0, 0, 100, 50);
+
+    @assert pixel 1,1 == 0,255,0,255; @moz-todo
+    @assert pixel 50,1 == 0,255,0,255; @moz-todo
+    @assert pixel 98,1 == 0,255,0,255; @moz-todo
+    @assert pixel 1,25 == 0,255,0,255; @moz-todo
+    @assert pixel 50,25 == 0,255,0,255; @moz-todo
+    @assert pixel 98,25 == 0,255,0,255; @moz-todo
+    @assert pixel 1,48 == 0,255,0,255; @moz-todo
+    @assert pixel 50,48 == 0,255,0,255; @moz-todo
+    @assert pixel 98,48 == 0,255,0,255; @moz-todo
+  expected: green
+
+- name: 2d.gradient.radial.touch2
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+
+    var g = ctx.createRadialGradient(-80, 25, 70, 0, 25, 150);
+    g.addColorStop(0, '#f00');
+    g.addColorStop(0.01, '#0f0');
+    g.addColorStop(0.99, '#0f0');
+    g.addColorStop(1, '#f00');
+    ctx.fillStyle = g;
+    ctx.fillRect(0, 0, 100, 50);
+
+    @assert pixel 1,1 == 0,255,0,255;
+    @assert pixel 50,1 == 0,255,0,255;
+    @assert pixel 98,1 == 0,255,0,255;
+    @assert pixel 1,25 == 0,255,0,255;
+    @assert pixel 50,25 == 0,255,0,255;
+    @assert pixel 98,25 == 0,255,0,255;
+    @assert pixel 1,48 == 0,255,0,255;
+    @assert pixel 50,48 == 0,255,0,255;
+    @assert pixel 98,48 == 0,255,0,255;
+  expected: green
+
+- name: 2d.gradient.radial.touch3
+  code: |
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 100, 50);
+
+    var g = ctx.createRadialGradient(120, -15, 25, 140, -30, 50);
+    g.addColorStop(0, '#f00');
+    g.addColorStop(1, '#f00');
+    ctx.fillStyle = g;
+    ctx.fillRect(0, 0, 100, 50);
+
+    @assert pixel 1,1 == 0,255,0,255; @moz-todo
+    @assert pixel 50,1 == 0,255,0,255; @moz-todo
+    @assert pixel 98,1 == 0,255,0,255; @moz-todo
+    @assert pixel 1,25 == 0,255,0,255; @moz-todo
+    @assert pixel 50,25 == 0,255,0,255; @moz-todo
+    @assert pixel 98,25 == 0,255,0,255; @moz-todo
+    @assert pixel 1,48 == 0,255,0,255; @moz-todo
+    @assert pixel 50,48 == 0,255,0,255; @moz-todo
+    @assert pixel 98,48 == 0,255,0,255; @moz-todo
+  expected: green
+
+- name: 2d.gradient.radial.equal
+  code: |
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 100, 50);
+
+    var g = ctx.createRadialGradient(50, 25, 20, 50, 25, 20);
+    g.addColorStop(0, '#f00');
+    g.addColorStop(1, '#f00');
+    ctx.fillStyle = g;
+    ctx.fillRect(0, 0, 100, 50);
+
+    @assert pixel 1,1 == 0,255,0,255; @moz-todo
+    @assert pixel 50,1 == 0,255,0,255; @moz-todo
+    @assert pixel 98,1 == 0,255,0,255; @moz-todo
+    @assert pixel 1,25 == 0,255,0,255; @moz-todo
+    @assert pixel 50,25 == 0,255,0,255; @moz-todo
+    @assert pixel 98,25 == 0,255,0,255; @moz-todo
+    @assert pixel 1,48 == 0,255,0,255; @moz-todo
+    @assert pixel 50,48 == 0,255,0,255; @moz-todo
+    @assert pixel 98,48 == 0,255,0,255; @moz-todo
+  expected: green
+
+- name: 2d.gradient.radial.cone.behind
+  code: |
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 100, 50);
+
+    var g = ctx.createRadialGradient(120, 25, 10, 211, 25, 100);
+    g.addColorStop(0, '#f00');
+    g.addColorStop(1, '#f00');
+    ctx.fillStyle = g;
+    ctx.fillRect(0, 0, 100, 50);
+
+    @assert pixel 1,1 == 0,255,0,255; @moz-todo
+    @assert pixel 50,1 == 0,255,0,255; @moz-todo
+    @assert pixel 98,1 == 0,255,0,255; @moz-todo
+    @assert pixel 1,25 == 0,255,0,255; @moz-todo
+    @assert pixel 50,25 == 0,255,0,255; @moz-todo
+    @assert pixel 98,25 == 0,255,0,255; @moz-todo
+    @assert pixel 1,48 == 0,255,0,255; @moz-todo
+    @assert pixel 50,48 == 0,255,0,255; @moz-todo
+    @assert pixel 98,48 == 0,255,0,255; @moz-todo
+  expected: green
+
+- name: 2d.gradient.radial.cone.front
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+
+    var g = ctx.createRadialGradient(311, 25, 10, 210, 25, 100);
+    g.addColorStop(0, '#f00');
+    g.addColorStop(1, '#0f0');
+    ctx.fillStyle = g;
+    ctx.fillRect(0, 0, 100, 50);
+
+    @assert pixel 1,1 == 0,255,0,255;
+    @assert pixel 50,1 == 0,255,0,255;
+    @assert pixel 98,1 == 0,255,0,255;
+    @assert pixel 1,25 == 0,255,0,255;
+    @assert pixel 50,25 == 0,255,0,255;
+    @assert pixel 98,25 == 0,255,0,255;
+    @assert pixel 1,48 == 0,255,0,255;
+    @assert pixel 50,48 == 0,255,0,255;
+    @assert pixel 98,48 == 0,255,0,255;
+  expected: green
+
+- name: 2d.gradient.radial.cone.bottom
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+
+    var g = ctx.createRadialGradient(210, 25, 100, 230, 25, 101);
+    g.addColorStop(0, '#0f0');
+    g.addColorStop(1, '#f00');
+    ctx.fillStyle = g;
+    ctx.fillRect(0, 0, 100, 50);
+
+    @assert pixel 1,1 == 0,255,0,255;
+    @assert pixel 50,1 == 0,255,0,255;
+    @assert pixel 98,1 == 0,255,0,255;
+    @assert pixel 1,25 == 0,255,0,255;
+    @assert pixel 50,25 == 0,255,0,255;
+    @assert pixel 98,25 == 0,255,0,255;
+    @assert pixel 1,48 == 0,255,0,255;
+    @assert pixel 50,48 == 0,255,0,255;
+    @assert pixel 98,48 == 0,255,0,255;
+  expected: green
+
+- name: 2d.gradient.radial.cone.top
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+
+    var g = ctx.createRadialGradient(230, 25, 100, 100, 25, 101);
+    g.addColorStop(0, '#f00');
+    g.addColorStop(1, '#0f0');
+    ctx.fillStyle = g;
+    ctx.fillRect(0, 0, 100, 50);
+
+    @assert pixel 1,1 == 0,255,0,255;
+    @assert pixel 50,1 == 0,255,0,255;
+    @assert pixel 98,1 == 0,255,0,255;
+    @assert pixel 1,25 == 0,255,0,255;
+    @assert pixel 50,25 == 0,255,0,255;
+    @assert pixel 98,25 == 0,255,0,255;
+    @assert pixel 1,48 == 0,255,0,255;
+    @assert pixel 50,48 == 0,255,0,255;
+    @assert pixel 98,48 == 0,255,0,255;
+  expected: green
+
+- name: 2d.gradient.radial.cone.beside
+  code: |
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 100, 50);
+
+    var g = ctx.createRadialGradient(0, 100, 40, 100, 100, 50);
+    g.addColorStop(0, '#f00');
+    g.addColorStop(1, '#f00');
+    ctx.fillStyle = g;
+    ctx.fillRect(0, 0, 100, 50);
+
+    @assert pixel 1,1 == 0,255,0,255; @moz-todo
+    @assert pixel 50,1 == 0,255,0,255; @moz-todo
+    @assert pixel 98,1 == 0,255,0,255; @moz-todo
+    @assert pixel 1,25 == 0,255,0,255; @moz-todo
+    @assert pixel 50,25 == 0,255,0,255; @moz-todo
+    @assert pixel 98,25 == 0,255,0,255; @moz-todo
+    @assert pixel 1,48 == 0,255,0,255; @moz-todo
+    @assert pixel 50,48 == 0,255,0,255; @moz-todo
+    @assert pixel 98,48 == 0,255,0,255; @moz-todo
+  expected: green
+
+- name: 2d.gradient.radial.cone.cylinder
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+
+    var g = ctx.createRadialGradient(210, 25, 100, 230, 25, 100);
+    g.addColorStop(0, '#0f0');
+    g.addColorStop(1, '#f00');
+    ctx.fillStyle = g;
+    ctx.fillRect(0, 0, 100, 50);
+
+    @assert pixel 1,1 == 0,255,0,255;
+    @assert pixel 50,1 == 0,255,0,255;
+    @assert pixel 98,1 == 0,255,0,255;
+    @assert pixel 1,25 == 0,255,0,255;
+    @assert pixel 50,25 == 0,255,0,255;
+    @assert pixel 98,25 == 0,255,0,255;
+    @assert pixel 1,48 == 0,255,0,255;
+    @assert pixel 50,48 == 0,255,0,255;
+    @assert pixel 98,48 == 0,255,0,255;
+  expected: green
+
+- name: 2d.gradient.radial.cone.shape1
+  code: |
+    var tol = 1; // tolerance to avoid antialiasing artifacts
+
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 100, 50);
+
+    ctx.fillStyle = '#f00';
+    ctx.beginPath();
+    ctx.moveTo(30+tol, 40);
+    ctx.lineTo(110, -20+tol);
+    ctx.lineTo(110, 100-tol);
+    ctx.fill();
+
+    var g = ctx.createRadialGradient(30+10*5/2, 40, 10*3/2, 30+10*15/4, 40, 10*9/4);
+    g.addColorStop(0, '#0f0');
+    g.addColorStop(1, '#0f0');
+    ctx.fillStyle = g;
+    ctx.fillRect(0, 0, 100, 50);
+
+    @assert pixel 1,1 == 0,255,0,255;
+    @assert pixel 50,1 == 0,255,0,255;
+    @assert pixel 98,1 == 0,255,0,255;
+    @assert pixel 1,25 == 0,255,0,255;
+    @assert pixel 50,25 == 0,255,0,255;
+    @assert pixel 98,25 == 0,255,0,255;
+    @assert pixel 1,48 == 0,255,0,255;
+    @assert pixel 50,48 == 0,255,0,255;
+    @assert pixel 98,48 == 0,255,0,255;
+  expected: green
+
+- name: 2d.gradient.radial.cone.shape2
+  code: |
+    var tol = 1; // tolerance to avoid antialiasing artifacts
+
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 100, 50);
+
+    var g = ctx.createRadialGradient(30+10*5/2, 40, 10*3/2, 30+10*15/4, 40, 10*9/4);
+    g.addColorStop(0, '#f00');
+    g.addColorStop(1, '#f00');
+    ctx.fillStyle = g;
+    ctx.fillRect(0, 0, 100, 50);
+
+    ctx.fillStyle = '#0f0';
+    ctx.beginPath();
+    ctx.moveTo(30-tol, 40);
+    ctx.lineTo(110, -20-tol);
+    ctx.lineTo(110, 100+tol);
+    ctx.fill();
+
+    @assert pixel 1,1 == 0,255,0,255; @moz-todo
+    @assert pixel 50,1 == 0,255,0,255; @moz-todo
+    @assert pixel 98,1 == 0,255,0,255;
+    @assert pixel 1,25 == 0,255,0,255; @moz-todo
+    @assert pixel 50,25 == 0,255,0,255;
+    @assert pixel 98,25 == 0,255,0,255;
+    @assert pixel 1,48 == 0,255,0,255; @moz-todo
+    @assert pixel 50,48 == 0,255,0,255;
+    @assert pixel 98,48 == 0,255,0,255;
+  expected: green
+
+- name: 2d.gradient.radial.transform.1
+  desc: Radial gradient coordinates are relative to the coordinate space at the time
+    of filling
+  code: |
+    var g = ctx.createRadialGradient(0, 0, 0, 0, 0, 11.2);
+    g.addColorStop(0, '#0f0');
+    g.addColorStop(0.5, '#0f0');
+    g.addColorStop(0.51, '#f00');
+    g.addColorStop(1, '#f00');
+    ctx.fillStyle = g;
+    ctx.translate(50, 25);
+    ctx.scale(10, 10);
+    ctx.fillRect(-5, -2.5, 10, 5);
+    @assert pixel 25,25 == 0,255,0,255;
+    @assert pixel 50,25 == 0,255,0,255;
+    @assert pixel 75,25 == 0,255,0,255;
+  expected: green
+
+- name: 2d.gradient.radial.transform.2
+  desc: Radial gradient coordinates are relative to the coordinate space at the time
+    of filling
+  code: |
+    ctx.translate(100, 0);
+    var g = ctx.createRadialGradient(0, 0, 0, 0, 0, 11.2);
+    g.addColorStop(0, '#0f0');
+    g.addColorStop(0.5, '#0f0');
+    g.addColorStop(0.51, '#f00');
+    g.addColorStop(1, '#f00');
+    ctx.fillStyle = g;
+    ctx.translate(-50, 25);
+    ctx.scale(10, 10);
+    ctx.fillRect(-5, -2.5, 10, 5);
+    @assert pixel 25,25 == 0,255,0,255;
+    @assert pixel 50,25 == 0,255,0,255;
+    @assert pixel 75,25 == 0,255,0,255;
+  expected: green
+
+- name: 2d.gradient.radial.transform.3
+  desc: Radial gradient transforms do not experience broken caching effects
+  code: |
+    var g = ctx.createRadialGradient(0, 0, 0, 0, 0, 11.2);
+    g.addColorStop(0, '#0f0');
+    g.addColorStop(0.5, '#0f0');
+    g.addColorStop(0.51, '#f00');
+    g.addColorStop(1, '#f00');
+    ctx.fillStyle = g;
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.translate(50, 25);
+    ctx.scale(10, 10);
+    ctx.fillRect(-5, -2.5, 10, 5);
+    @assert pixel 25,25 == 0,255,0,255;
+    @assert pixel 50,25 == 0,255,0,255;
+    @assert pixel 75,25 == 0,255,0,255;
+  expected: green
+
+- name: 2d.gradient.conic.positive.rotation
+  desc: Conic gradient with positive rotation
+  code: |
+    const g = ctx.createConicGradient(3*Math.PI/2, 50, 25);
+    // It's red in the upper right region and green on the lower left region
+    g.addColorStop(0, "#f00");
+    g.addColorStop(0.25, "#0f0");
+    g.addColorStop(0.50, "#0f0");
+    g.addColorStop(0.75, "#f00");
+    ctx.fillStyle = g;
+    ctx.fillRect(0, 0, 100, 50);
+    @assert pixel 25,15 ==~ 255,0,0,255 +/- 3;
+    @assert pixel 75,40 ==~ 0,255,0,255 +/- 3;
+  expected: green
+
+- name: 2d.gradient.conic.negative.rotation
+  desc: Conic gradient with negative rotation
+  code: |
+    const g = ctx.createConicGradient(-Math.PI/2, 50, 25);
+    // It's red in the upper right region and green on the lower left region
+    g.addColorStop(0, "#f00");
+    g.addColorStop(0.25, "#0f0");
+    g.addColorStop(0.50, "#0f0");
+    g.addColorStop(0.75, "#f00");
+    ctx.fillStyle = g;
+    ctx.fillRect(0, 0, 100, 50);
+    @assert pixel 25,15 ==~ 255,0,0,255 +/- 3;
+    @assert pixel 75,40 ==~ 0,255,0,255 +/- 3;
+  expected: green
+
+- name: 2d.gradient.conic.invalid.inputs
+  desc: Conic gradient function with invalid inputs
+  code: |
+    @nonfinite @assert throws TypeError ctx.createConicGradient(<0 Infinity -Infinity NaN>, <0 Infinity -Infinity NaN>, <1 Infinity -Infinity NaN>);
+
+    const g = ctx.createConicGradient(0, 0, 25);
+    @nonfinite @assert throws TypeError g.addColorStop(, <'#f00'>);
+    @nonfinite @assert throws SYNTAX_ERR g.addColorStop(<0>, );
+
+- name: 2d.pattern.basic.type
+  images:
+  - green.png
+  code: |
+    @assert window.CanvasPattern !== undefined;
+
+    window.CanvasPattern.prototype.thisImplementsCanvasPattern = true;
+
+    var img = document.getElementById('green.png');
+    var pattern = ctx.createPattern(img, 'no-repeat');
+    @assert pattern.thisImplementsCanvasPattern;
+
+- name: 2d.pattern.basic.image
+  images:
+  - green.png
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+    var img = document.getElementById('green.png');
+    var pattern = ctx.createPattern(img, 'no-repeat');
+    ctx.fillStyle = pattern;
+    ctx.fillRect(0, 0, 100, 50);
+
+    @assert pixel 1,1 == 0,255,0,255;
+    @assert pixel 98,1 == 0,255,0,255;
+    @assert pixel 1,48 == 0,255,0,255;
+    @assert pixel 98,48 == 0,255,0,255;
+  expected: green
+
+- name: 2d.pattern.basic.canvas
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+
+    var canvas2 = document.createElement('canvas');
+    canvas2.width = 100;
+    canvas2.height = 50;
+    var ctx2 = canvas2.getContext('2d');
+    ctx2.fillStyle = '#0f0';
+    ctx2.fillRect(0, 0, 100, 50);
+
+    var pattern = ctx.createPattern(canvas2, 'no-repeat');
+    ctx.fillStyle = pattern;
+    ctx.fillRect(0, 0, 100, 50);
+
+    @assert pixel 1,1 == 0,255,0,255;
+    @assert pixel 50,1 == 0,255,0,255;
+    @assert pixel 98,1 == 0,255,0,255;
+    @assert pixel 1,25 == 0,255,0,255;
+    @assert pixel 50,25 == 0,255,0,255;
+    @assert pixel 98,25 == 0,255,0,255;
+    @assert pixel 1,48 == 0,255,0,255;
+    @assert pixel 50,48 == 0,255,0,255;
+    @assert pixel 98,48 == 0,255,0,255;
+  expected: green
+
+- name: 2d.pattern.basic.zerocanvas
+  code: |
+    canvas.width = 0;
+    canvas.height = 10;
+    @assert canvas.width === 0;
+    @assert canvas.height === 10;
+    @assert throws INVALID_STATE_ERR ctx.createPattern(canvas, 'repeat');
+
+    canvas.width = 10;
+    canvas.height = 0;
+    @assert canvas.width === 10;
+    @assert canvas.height === 0;
+    @assert throws INVALID_STATE_ERR ctx.createPattern(canvas, 'repeat');
+
+    canvas.width = 0;
+    canvas.height = 0;
+    @assert canvas.width === 0;
+    @assert canvas.height === 0;
+    @assert throws INVALID_STATE_ERR ctx.createPattern(canvas, 'repeat');
+
+- name: 2d.pattern.basic.nocontext
+  code: |
+    var canvas2 = document.createElement('canvas');
+    canvas2.width = 100;
+    canvas2.height = 50;
+    var pattern = ctx.createPattern(canvas2, 'no-repeat');
+
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.fillStyle = '#f00';
+    ctx.fillStyle = pattern;
+    ctx.fillRect(0, 0, 100, 50);
+
+    @assert pixel 1,1 == 0,255,0,255;
+    @assert pixel 98,1 == 0,255,0,255;
+    @assert pixel 1,48 == 0,255,0,255;
+    @assert pixel 98,48 == 0,255,0,255;
+  expected: green
+
+- name: 2d.pattern.transform.identity
+  code: |
+    var canvas2 = document.createElement('canvas');
+    canvas2.width = 100;
+    canvas2.height = 50;
+    var pattern = ctx.createPattern(canvas2, 'no-repeat');
+    pattern.setTransform(new DOMMatrix());
+
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.fillStyle = '#f00';
+    ctx.fillStyle = pattern;
+    ctx.fillRect(0, 0, 100, 50);
+
+    @assert pixel 1,1 == 0,255,0,255;
+    @assert pixel 98,1 == 0,255,0,255;
+    @assert pixel 1,48 == 0,255,0,255;
+    @assert pixel 98,48 == 0,255,0,255;
+  expected: green
+
+- name: 2d.pattern.transform.infinity
+  code: |
+    var canvas2 = document.createElement('canvas');
+    canvas2.width = 100;
+    canvas2.height = 50;
+    var pattern = ctx.createPattern(canvas2, 'no-repeat');
+    pattern.setTransform({a: Infinity});
+
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.fillStyle = '#f00';
+    ctx.fillStyle = pattern;
+    ctx.fillRect(0, 0, 100, 50);
+
+    @assert pixel 1,1 == 0,255,0,255;
+    @assert pixel 98,1 == 0,255,0,255;
+    @assert pixel 1,48 == 0,255,0,255;
+    @assert pixel 98,48 == 0,255,0,255;
+  expected: green
+
+- name: 2d.pattern.transform.invalid
+  code: |
+    var canvas2 = document.createElement('canvas');
+    canvas2.width = 100;
+    canvas2.height = 50;
+    var pattern = ctx.createPattern(canvas2, 'no-repeat');
+    @assert throws TypeError pattern.setTransform({a: 1, m11: 2});
+
+- name: 2d.pattern.image.undefined
+  notes: *bindings
+  code: |
+    @assert throws TypeError ctx.createPattern(undefined, 'repeat');
+
+- name: 2d.pattern.image.null
+  notes: *bindings
+  code: |
+    @assert throws TypeError ctx.createPattern(null, 'repeat');
+
+- name: 2d.pattern.image.string
+  notes: *bindings
+  code: |
+    @assert throws TypeError ctx.createPattern('../images/red.png', 'repeat');
+
+- name: 2d.pattern.image.incomplete.nosrc
+  code: |
+    var img = new Image();
+    @assert ctx.createPattern(img, 'repeat') === null;
+
+- name: 2d.pattern.image.incomplete.immediate
+  images:
+  - red.png
+  code: |
+    var img = new Image();
+    img.src = '../images/red.png';
+    // This triggers the "update the image data" algorithm.
+    // The image will not go to the "completely available" state
+    // until a fetch task in the networking task source is processed,
+    // so the image must not be fully decodable yet:
+    @assert ctx.createPattern(img, 'repeat') === null; @moz-todo
+
+- name: 2d.pattern.image.incomplete.reload
+  images:
+  - yellow.png
+  - red.png
+  code: |
+    var img = document.getElementById('yellow.png');
+    img.src = '../images/red.png';
+    // This triggers the "update the image data" algorithm,
+    // and resets the image to the "unavailable" state.
+    // The image will not go to the "completely available" state
+    // until a fetch task in the networking task source is processed,
+    // so the image must not be fully decodable yet:
+    @assert ctx.createPattern(img, 'repeat') === null; @moz-todo
+
+- name: 2d.pattern.image.incomplete.emptysrc
+  images:
+  - red.png
+  mozilla: {throws: !!null ''}
+  code: |
+    var img = document.getElementById('red.png');
+    img.src = "";
+    @assert ctx.createPattern(img, 'repeat') === null;
+
+- name: 2d.pattern.image.incomplete.removedsrc
+  images:
+  - red.png
+  mozilla: {throws: !!null ''}
+  code: |
+    var img = document.getElementById('red.png');
+    img.removeAttribute('src');
+    @assert ctx.createPattern(img, 'repeat') === null;
+
+- name: 2d.pattern.image.broken
+  images:
+  - broken.png
+  code: |
+    var img = document.getElementById('broken.png');
+    @assert throws INVALID_STATE_ERR ctx.createPattern(img, 'repeat');
+
+- name: 2d.pattern.image.nonexistent
+  images:
+  - no-such-image-really.png
+  code: |
+    var img = document.getElementById('no-such-image-really.png');
+    @assert throws INVALID_STATE_ERR ctx.createPattern(img, 'repeat');
+
+- name: 2d.pattern.svgimage.nonexistent
+  svgimages:
+  - no-such-image-really.png
+  code: |
+    var img = document.getElementById('no-such-image-really.png');
+    @assert throws INVALID_STATE_ERR ctx.createPattern(img, 'repeat');
+
+- name: 2d.pattern.image.nonexistent-but-loading
+  code: |
+    var img = document.createElement("img");
+    img.src = "/images/no-such-image-really.png";
+    @assert ctx.createPattern(img, 'repeat') === null;
+    var img = document.createElementNS("http://www.w3.org/2000/svg", "image");
+    img.src = "/images/no-such-image-really.png";
+    @assert ctx.createPattern(img, 'repeat') === null;
+
+- name: 2d.pattern.image.nosrc
+  code: |
+    var img = document.createElement("img");
+    @assert ctx.createPattern(img, 'repeat') === null;
+    var img = document.createElementNS("http://www.w3.org/2000/svg", "image");
+    @assert ctx.createPattern(img, 'repeat') === null;
+
+- name: 2d.pattern.image.zerowidth
+  images:
+  - red-zerowidth.svg
+  code: |
+    var img = document.getElementById('red-zerowidth.svg');
+    @assert ctx.createPattern(img, 'repeat') === null;
+
+- name: 2d.pattern.image.zeroheight
+  images:
+  - red-zeroheight.svg
+  code: |
+    var img = document.getElementById('red-zeroheight.svg');
+    @assert ctx.createPattern(img, 'repeat') === null;
+
+- name: 2d.pattern.svgimage.zerowidth
+  svgimages:
+  - red-zerowidth.svg
+  code: |
+    var img = document.getElementById('red-zerowidth.svg');
+    @assert ctx.createPattern(img, 'repeat') === null;
+
+- name: 2d.pattern.svgimage.zeroheight
+  svgimages:
+  - red-zeroheight.svg
+  code: |
+    var img = document.getElementById('red-zeroheight.svg');
+    @assert ctx.createPattern(img, 'repeat') === null;
+
+- name: 2d.pattern.repeat.empty
+  images:
+  - green-1x1.png
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+    var img = document.getElementById('green-1x1.png');
+    var pattern = ctx.createPattern(img, "");
+    ctx.fillStyle = pattern;
+    ctx.fillRect(0, 0, 200, 50);
+
+    @assert pixel 1,1 == 0,255,0,255;
+    @assert pixel 98,1 == 0,255,0,255;
+    @assert pixel 1,48 == 0,255,0,255;
+    @assert pixel 98,48 == 0,255,0,255;
+  expected: green
+
+- name: 2d.pattern.repeat.null
+  code: |
+    @assert ctx.createPattern(canvas, null) != null;
+
+- name: 2d.pattern.repeat.undefined
+  code: |
+    @assert throws SYNTAX_ERR ctx.createPattern(canvas, undefined);
+
+- name: 2d.pattern.repeat.unrecognised
+  code: |
+    @assert throws SYNTAX_ERR ctx.createPattern(canvas, "invalid");
+
+- name: 2d.pattern.repeat.unrecognisednull
+  code: |
+    @assert throws SYNTAX_ERR ctx.createPattern(canvas, "null");
+
+- name: 2d.pattern.repeat.case
+  code: |
+    @assert throws SYNTAX_ERR ctx.createPattern(canvas, "Repeat");
+
+- name: 2d.pattern.repeat.nullsuffix
+  code: |
+    @assert throws SYNTAX_ERR ctx.createPattern(canvas, "repeat\0");
+
+- name: 2d.pattern.modify.image1
+  images:
+  - green.png
+  code: |
+    var img = document.getElementById('green.png');
+    var pattern = ctx.createPattern(img, 'no-repeat');
+    deferTest();
+    img.onload = t.step_func_done(function ()
+    {
+        ctx.fillStyle = pattern;
+        ctx.fillRect(0, 0, 100, 50);
+
+        @assert pixel 1,1 == 0,255,0,255;
+        @assert pixel 98,1 == 0,255,0,255;
+        @assert pixel 1,48 == 0,255,0,255;
+        @assert pixel 98,48 == 0,255,0,255;
+    });
+    img.src = '/images/red.png';
+  expected: green
+
+- name: 2d.pattern.modify.image2
+  images:
+  - green.png
+  code: |
+    var img = document.getElementById('green.png');
+    var pattern = ctx.createPattern(img, 'no-repeat');
+    ctx.fillStyle = pattern;
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.fillStyle = '#00f';
+    ctx.fillRect(0, 0, 100, 50);
+    deferTest();
+    img.onload = t.step_func_done(function ()
+    {
+        ctx.fillStyle = pattern;
+        ctx.fillRect(0, 0, 100, 50);
+
+        @assert pixel 1,1 == 0,255,0,255;
+        @assert pixel 98,1 == 0,255,0,255;
+        @assert pixel 1,48 == 0,255,0,255;
+        @assert pixel 98,48 == 0,255,0,255;
+    });
+    img.src = '/images/red.png';
+  expected: green
+
+- name: 2d.pattern.modify.canvas1
+  code: |
+    var canvas2 = document.createElement('canvas');
+    canvas2.width = 100;
+    canvas2.height = 50;
+    var ctx2 = canvas2.getContext('2d');
+    ctx2.fillStyle = '#0f0';
+    ctx2.fillRect(0, 0, 100, 50);
+
+    var pattern = ctx.createPattern(canvas2, 'no-repeat');
+
+    ctx2.fillStyle = '#f00';
+    ctx2.fillRect(0, 0, 100, 50);
+
+    ctx.fillStyle = pattern;
+    ctx.fillRect(0, 0, 100, 50);
+
+    @assert pixel 1,1 == 0,255,0,255;
+    @assert pixel 98,1 == 0,255,0,255;
+    @assert pixel 1,48 == 0,255,0,255;
+    @assert pixel 98,48 == 0,255,0,255;
+  expected: green
+
+- name: 2d.pattern.modify.canvas2
+  code: |
+    var canvas2 = document.createElement('canvas');
+    canvas2.width = 100;
+    canvas2.height = 50;
+    var ctx2 = canvas2.getContext('2d');
+    ctx2.fillStyle = '#0f0';
+    ctx2.fillRect(0, 0, 100, 50);
+
+    var pattern = ctx.createPattern(canvas2, 'no-repeat');
+    ctx.fillStyle = pattern;
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+
+    ctx2.fillStyle = '#f00';
+    ctx2.fillRect(0, 0, 100, 50);
+
+    ctx.fillStyle = pattern;
+    ctx.fillRect(0, 0, 100, 50);
+
+    @assert pixel 1,1 == 0,255,0,255;
+    @assert pixel 98,1 == 0,255,0,255;
+    @assert pixel 1,48 == 0,255,0,255;
+    @assert pixel 98,48 == 0,255,0,255;
+  expected: green
+
+- name: 2d.pattern.crosscanvas
+  images:
+  - green.png
+  code: |
+    var img = document.getElementById('green.png');
+
+    var pattern = document.createElement('canvas').getContext('2d').createPattern(img, 'no-repeat');
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.fillStyle = pattern;
+    ctx.fillRect(0, 0, 100, 50);
+
+    @assert pixel 50,25 == 0,255,0,255;
+  expected: green
+
+- name: 2d.pattern.paint.norepeat.basic
+  images:
+  - green.png
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+
+    var img = document.getElementById('green.png');
+    var pattern = ctx.createPattern(img, 'no-repeat');
+    ctx.fillStyle = pattern;
+    ctx.fillRect(0, 0, 100, 50);
+
+    @assert pixel 1,1 == 0,255,0,255;
+    @assert pixel 98,1 == 0,255,0,255;
+    @assert pixel 1,48 == 0,255,0,255;
+    @assert pixel 98,48 == 0,255,0,255;
+  expected: green
+
+- name: 2d.pattern.paint.norepeat.outside
+  images:
+  - red.png
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+
+    var img = document.getElementById('red.png');
+    var pattern = ctx.createPattern(img, 'no-repeat');
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 100, 50);
+
+    ctx.fillStyle = pattern;
+    ctx.fillRect(0, -50, 100, 50);
+    ctx.fillRect(-100, 0, 100, 50);
+    ctx.fillRect(0, 50, 100, 50);
+    ctx.fillRect(100, 0, 100, 50);
+
+    @assert pixel 1,1 == 0,255,0,255;
+    @assert pixel 98,1 == 0,255,0,255;
+    @assert pixel 1,48 == 0,255,0,255;
+    @assert pixel 98,48 == 0,255,0,255;
+  expected: green
+
+- name: 2d.pattern.paint.norepeat.coord1
+  images:
+  - green.png
+  code: |
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 50, 50);
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(50, 0, 50, 50);
+
+    var img = document.getElementById('green.png');
+    var pattern = ctx.createPattern(img, 'no-repeat');
+    ctx.fillStyle = pattern;
+    ctx.translate(50, 0);
+    ctx.fillRect(-50, 0, 100, 50);
+
+    @assert pixel 1,1 == 0,255,0,255;
+    @assert pixel 98,1 == 0,255,0,255;
+    @assert pixel 1,48 == 0,255,0,255;
+    @assert pixel 98,48 == 0,255,0,255;
+  expected: green
+
+- name: 2d.pattern.paint.norepeat.coord2
+  images:
+  - green.png
+  code: |
+    var img = document.getElementById('green.png');
+    var pattern = ctx.createPattern(img, 'no-repeat');
+    ctx.fillStyle = pattern;
+    ctx.fillRect(0, 0, 50, 50);
+
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(50, 0, 50, 50);
+
+    ctx.fillStyle = pattern;
+    ctx.translate(50, 0);
+    ctx.fillRect(-50, 0, 100, 50);
+
+    @assert pixel 1,1 == 0,255,0,255;
+    @assert pixel 98,1 == 0,255,0,255;
+    @assert pixel 1,48 == 0,255,0,255;
+    @assert pixel 98,48 == 0,255,0,255;
+  expected: green
+
+- name: 2d.pattern.paint.norepeat.coord3
+  images:
+  - red.png
+  code: |
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 100, 50);
+
+    var img = document.getElementById('red.png');
+    var pattern = ctx.createPattern(img, 'no-repeat');
+    ctx.fillStyle = pattern;
+    ctx.translate(50, 25);
+    ctx.fillRect(-50, -25, 100, 50);
+
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 50, 25);
+
+    @assert pixel 1,1 == 0,255,0,255;
+    @assert pixel 98,1 == 0,255,0,255;
+    @assert pixel 1,48 == 0,255,0,255;
+    @assert pixel 98,48 == 0,255,0,255;
+  expected: green
+
+- name: 2d.pattern.paint.repeat.basic
+  images:
+  - green-16x16.png
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+
+    var img = document.getElementById('green-16x16.png');
+    var pattern = ctx.createPattern(img, 'repeat');
+    ctx.fillStyle = pattern;
+    ctx.fillRect(0, 0, 100, 50);
+
+    @assert pixel 1,1 == 0,255,0,255;
+    @assert pixel 98,1 == 0,255,0,255;
+    @assert pixel 1,48 == 0,255,0,255;
+    @assert pixel 98,48 == 0,255,0,255;
+  expected: green
+
+- name: 2d.pattern.paint.repeat.outside
+  images:
+  - green-16x16.png
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+
+    var img = document.getElementById('green-16x16.png');
+    var pattern = ctx.createPattern(img, 'repeat');
+    ctx.fillStyle = pattern;
+    ctx.translate(50, 25);
+    ctx.fillRect(-50, -25, 100, 50);
+
+    @assert pixel 1,1 == 0,255,0,255;
+    @assert pixel 98,1 == 0,255,0,255;
+    @assert pixel 1,48 == 0,255,0,255;
+    @assert pixel 98,48 == 0,255,0,255;
+  expected: green
+
+- name: 2d.pattern.paint.repeat.coord1
+  images:
+  - rgrg-256x256.png
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+
+    var img = document.getElementById('rgrg-256x256.png');
+    var pattern = ctx.createPattern(img, 'repeat');
+    ctx.fillStyle = pattern;
+    ctx.translate(-128, -78);
+    ctx.fillRect(128, 78, 100, 50);
+
+    @assert pixel 1,1 == 0,255,0,255;
+    @assert pixel 98,1 == 0,255,0,255;
+    @assert pixel 1,48 == 0,255,0,255;
+    @assert pixel 98,48 == 0,255,0,255;
+  expected: green
+
+- name: 2d.pattern.paint.repeat.coord2
+  images:
+  - ggrr-256x256.png
+  code: |
+    var img = document.getElementById('ggrr-256x256.png');
+    var pattern = ctx.createPattern(img, 'repeat');
+    ctx.fillStyle = pattern;
+    ctx.fillRect(0, 0, 100, 50);
+
+    @assert pixel 1,1 == 0,255,0,255;
+    @assert pixel 98,1 == 0,255,0,255;
+    @assert pixel 1,48 == 0,255,0,255;
+    @assert pixel 98,48 == 0,255,0,255;
+  expected: green
+
+- name: 2d.pattern.paint.repeat.coord3
+  images:
+  - rgrg-256x256.png
+  code: |
+    var img = document.getElementById('rgrg-256x256.png');
+    var pattern = ctx.createPattern(img, 'repeat');
+    ctx.fillStyle = pattern;
+    ctx.fillRect(0, 0, 100, 50);
+
+    ctx.translate(-128, -78);
+    ctx.fillRect(128, 78, 100, 50);
+
+    @assert pixel 1,1 == 0,255,0,255;
+    @assert pixel 98,1 == 0,255,0,255;
+    @assert pixel 1,48 == 0,255,0,255;
+    @assert pixel 98,48 == 0,255,0,255;
+  expected: green
+
+- name: 2d.pattern.paint.repeatx.basic
+  images:
+  - green-16x16.png
+  code: |
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 16);
+
+    var img = document.getElementById('green-16x16.png');
+    var pattern = ctx.createPattern(img, 'repeat-x');
+    ctx.fillStyle = pattern;
+    ctx.fillRect(0, 0, 100, 50);
+
+    @assert pixel 1,1 == 0,255,0,255;
+    @assert pixel 98,1 == 0,255,0,255;
+    @assert pixel 1,48 == 0,255,0,255;
+    @assert pixel 98,48 == 0,255,0,255;
+  expected: green
+
+- name: 2d.pattern.paint.repeatx.outside
+  images:
+  - red-16x16.png
+  code: |
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 100, 50);
+
+    var img = document.getElementById('red-16x16.png');
+    var pattern = ctx.createPattern(img, 'repeat-x');
+    ctx.fillStyle = pattern;
+    ctx.fillRect(0, 0, 100, 50);
+
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 100, 16);
+
+    @assert pixel 1,1 == 0,255,0,255;
+    @assert pixel 98,1 == 0,255,0,255;
+    @assert pixel 1,48 == 0,255,0,255;
+    @assert pixel 98,48 == 0,255,0,255;
+  expected: green
+
+- name: 2d.pattern.paint.repeatx.coord1
+  images:
+  - red-16x16.png
+  code: |
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 100, 50);
+
+    var img = document.getElementById('red-16x16.png');
+    var pattern = ctx.createPattern(img, 'repeat-x');
+    ctx.fillStyle = pattern;
+    ctx.translate(0, 16);
+    ctx.fillRect(0, -16, 100, 50);
+
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 100, 16);
+
+    @assert pixel 1,1 == 0,255,0,255;
+    @assert pixel 98,1 == 0,255,0,255;
+    @assert pixel 1,25 == 0,255,0,255;
+    @assert pixel 98,25 == 0,255,0,255;
+    @assert pixel 1,48 == 0,255,0,255;
+    @assert pixel 98,48 == 0,255,0,255;
+  expected: green
+
+- name: 2d.pattern.paint.repeaty.basic
+  images:
+  - green-16x16.png
+  code: |
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 16, 50);
+
+    var img = document.getElementById('green-16x16.png');
+    var pattern = ctx.createPattern(img, 'repeat-y');
+    ctx.fillStyle = pattern;
+    ctx.fillRect(0, 0, 100, 50);
+
+    @assert pixel 1,1 == 0,255,0,255;
+    @assert pixel 98,1 == 0,255,0,255;
+    @assert pixel 1,48 == 0,255,0,255;
+    @assert pixel 98,48 == 0,255,0,255;
+  expected: green
+
+- name: 2d.pattern.paint.repeaty.outside
+  images:
+  - red-16x16.png
+  code: |
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 100, 50);
+
+    var img = document.getElementById('red-16x16.png');
+    var pattern = ctx.createPattern(img, 'repeat-y');
+    ctx.fillStyle = pattern;
+    ctx.fillRect(0, 0, 100, 50);
+
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 16, 50);
+
+    @assert pixel 1,1 == 0,255,0,255;
+    @assert pixel 98,1 == 0,255,0,255;
+    @assert pixel 1,48 == 0,255,0,255;
+    @assert pixel 98,48 == 0,255,0,255;
+  expected: green
+
+- name: 2d.pattern.paint.repeaty.coord1
+  images:
+  - red-16x16.png
+  code: |
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 100, 50);
+
+    var img = document.getElementById('red-16x16.png');
+    var pattern = ctx.createPattern(img, 'repeat-y');
+    ctx.fillStyle = pattern;
+    ctx.translate(48, 0);
+    ctx.fillRect(-48, 0, 100, 50);
+
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 16, 50);
+
+    @assert pixel 1,1 == 0,255,0,255;
+    @assert pixel 50,1 == 0,255,0,255;
+    @assert pixel 98,1 == 0,255,0,255;
+    @assert pixel 1,48 == 0,255,0,255;
+    @assert pixel 50,48 == 0,255,0,255;
+    @assert pixel 98,48 == 0,255,0,255;
+  expected: green
+
+- name: 2d.pattern.paint.orientation.image
+  desc: Image patterns do not get flipped when painted
+  images:
+  - rrgg-256x256.png
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+
+    var img = document.getElementById('rrgg-256x256.png');
+    var pattern = ctx.createPattern(img, 'no-repeat');
+    ctx.fillStyle = pattern;
+    ctx.save();
+    ctx.translate(0, -103);
+    ctx.fillRect(0, 103, 100, 50);
+    ctx.restore();
+
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 100, 25);
+
+    @assert pixel 1,1 == 0,255,0,255;
+    @assert pixel 98,1 == 0,255,0,255;
+    @assert pixel 1,48 == 0,255,0,255;
+    @assert pixel 98,48 == 0,255,0,255;
+  expected: green
+
+- name: 2d.pattern.paint.orientation.canvas
+  desc: Canvas patterns do not get flipped when painted
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+
+    var canvas2 = document.createElement('canvas');
+    canvas2.width = 100;
+    canvas2.height = 50;
+    var ctx2 = canvas2.getContext('2d');
+    ctx2.fillStyle = '#f00';
+    ctx2.fillRect(0, 0, 100, 25);
+    ctx2.fillStyle = '#0f0';
+    ctx2.fillRect(0, 25, 100, 25);
+
+    var pattern = ctx.createPattern(canvas2, 'no-repeat');
+    ctx.fillStyle = pattern;
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 100, 25);
+
+    @assert pixel 1,1 == 0,255,0,255;
+    @assert pixel 98,1 == 0,255,0,255;
+    @assert pixel 1,48 == 0,255,0,255;
+    @assert pixel 98,48 == 0,255,0,255;
+  expected: green
+
+
+- name: 2d.pattern.animated.gif
+  desc: createPattern() of an animated GIF draws the first frame
+  images:
+  - anim-gr.gif
+  code: |
+    deferTest();
+    step_timeout(function () {
+        var pattern = ctx.createPattern(document.getElementById('anim-gr.gif'), 'repeat');
+        ctx.fillStyle = pattern;
+        ctx.fillRect(0, 0, 50, 50);
+        step_timeout(t.step_func_done(function () {
+            ctx.fillRect(50, 0, 50, 50);
+            @assert pixel 25,25 ==~ 0,255,0,255;
+            @assert pixel 75,25 ==~ 0,255,0,255;
+        }), 250);
+    }, 250);
+  expected: green
+
+- name: 2d.fillStyle.CSSRGB
+  desc: CSSRGB works as color input
+  code: |
+    ctx.fillStyle = new CSSRGB(1, 0, 1);
+    @assert ctx.fillStyle === '#ff00ff';
+    ctx.fillRect(0, 0, 100, 50);
+    @assert pixel 50,25 == 255,0,255,255;
+
+    const color = new CSSRGB(0, CSS.percent(50), 0);
+    ctx.fillStyle = color;
+    @assert ctx.fillStyle === '#008000';
+    ctx.fillRect(0, 0, 100, 50);
+    @assert pixel 50,25 == 0,128,0,255;
+    color.g = 0;
+    ctx.fillStyle = color;
+    @assert ctx.fillStyle === '#000000';
+    ctx.fillRect(0, 0, 100, 50);
+    @assert pixel 50,25 == 0,0,0,255;
+
+    color.alpha = 0;
+    ctx.fillStyle = color;
+    @assert ctx.fillStyle === 'rgba(0, 0, 0, 0)';
+    ctx.reset();
+    color.alpha = 0.5;
+    ctx.fillStyle = color;
+    ctx.fillRect(0, 0, 100, 50);
+    @assert pixel 50,25 == 0,0,0,128;
+
+    ctx.fillStyle = new CSSHSL(CSS.deg(0), 1, 1).toRGB();
+    @assert ctx.fillStyle === '#ffffff';
+    ctx.fillRect(0, 0, 100, 50);
+    @assert pixel 50,25 == 255,255,255,255;
+
+    color.alpha = 1;
+    color.g = 1;
+    ctx.fillStyle = color;
+    ctx.fillRect(0, 0, 100, 50);
+  expected: green
+
+- name: 2d.fillStyle.CSSHSL
+  desc: CSSHSL works as color input
+  code: |
+    ctx.fillStyle = new CSSHSL(CSS.deg(180), 0.5, 0.5);
+    ctx.fillRect(0, 0, 100, 50);
+    @assert pixel 50,25 ==~ 64,191,191,255 +/- 3;
+
+    const color = new CSSHSL(CSS.deg(180), 1, 1);
+    ctx.fillStyle = color;
+    @assert ctx.fillStyle === '#ffffff';
+    ctx.fillRect(0, 0, 100, 50);
+    @assert pixel 50,25 == 255,255,255,255;
+    color.l = 0.5;
+    ctx.fillStyle = color;
+    @assert ctx.fillStyle === '#00ffff';
+    ctx.fillRect(0, 0, 100, 50);
+    @assert pixel 50,25 == 0,255,255,255;
+
+    ctx.fillStyle = new CSSRGB(1, 0, 1).toHSL();
+    @assert ctx.fillStyle === '#ff00ff';
+    ctx.fillRect(0, 0, 100, 50);
+    @assert pixel 50,25 == 255,0,255,255;
+
+    color.h = CSS.deg(120);
+    color.s = 1;
+    color.l = 0.5;
+    ctx.fillStyle = color;
+    ctx.fillRect(0, 0, 100, 50);
+  expected: green
diff --git a/testing/web-platform/tests/html/canvas/tools/yaml/element/meta.yaml b/testing/web-platform/tests/html/canvas/tools/yaml/element/meta.yaml
new file mode 100644
index 0000000000..e8c4250426
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/tools/yaml/element/meta.yaml
@@ -0,0 +1,539 @@
+- meta: |
+    cases = [
+        ("zero", "0", 0),
+        ("empty", "", None),
+        ("onlyspace", "  ", None),
+        ("space", "  100", 100),
+        ("whitespace", "\r\n\t\f100", 100),
+        ("plus", "+100", 100),
+        ("minus", "-100", None),
+        ("octal", "0100", 100),
+        ("hex", "0x100", 0),
+        ("exp", "100e1", 100),
+        ("decimal", "100.999", 100),
+        ("percent", "100%", 100),
+        ("em", "100em", 100),
+        ("junk", "#!?", None),
+        ("trailingjunk", "100#!?", 100),
+    ]
+    def gen(name, string, exp, code):
+        if exp is None:
+            code += "@assert canvas.width === 300;\n@assert canvas.height === 150;\n"
+            expected = "size 300 150"
+        else:
+            code += "@assert canvas.width === %s;\n@assert canvas.height === %s;\n" % (exp, exp)
+            expected = "size %s %s" % (exp, exp)
+
+            # With "100%", Opera gets canvas.width = 100 but renders at 100% of the frame width,
+            # so check the CSS display width
+            code += '@assert window.getComputedStyle(canvas, null).getPropertyValue("width") === "%spx";\n' % (exp, )
+
+        code += "@assert canvas.getAttribute('width') === %r;\n" % string
+        code += "@assert canvas.getAttribute('height') === %r;\n" % string
+
+        if exp == 0:
+            expected = None # can't generate zero-sized PNGs for the expected image
+
+        return code, expected
+
+    for name, string, exp in cases:
+        code = ""
+        code, expected = gen(name, string, exp, code)
+        # We need to replace \r with 
 because \r\n gets converted to \n in the HTML parser.
+        htmlString = string.replace('\r', '
')
+        tests.append( {
+            "name": "size.attributes.parse.%s" % name,
+            "desc": "Parsing of non-negative integers",
+            "size": '%s, %s' % (htmlString, htmlString),
+            "code": code,
+            "expected": expected
+        } )
+
+    for name, string, exp in cases:
+        code = "canvas.setAttribute('width', %r);\ncanvas.setAttribute('height', %r);\n" % (string, string)
+        code, expected = gen(name, string, exp, code)
+        tests.append( {
+            "name": "size.attributes.setAttribute.%s" % name,
+            "desc": "Parsing of non-negative integers in setAttribute",
+            "size": '50, 50',
+            "code": code,
+            "expected": expected
+        } )
+
+- meta: |
+    state = [ # some non-default values to test with
+        ('strokeStyle', '"#ff0000"'),
+        ('fillStyle', '"#ff0000"'),
+        ('globalAlpha', 0.5),
+        ('lineWidth', 0.5),
+        ('lineCap', '"round"'),
+        ('lineJoin', '"round"'),
+        ('miterLimit', 0.5),
+        ('shadowOffsetX', 5),
+        ('shadowOffsetY', 5),
+        ('shadowBlur', 5),
+        ('shadowColor', '"#ff0000"'),
+        ('globalCompositeOperation', '"copy"'),
+        ('font', '"25px serif"'),
+        ('textAlign', '"center"'),
+        ('textBaseline', '"bottom"'),
+    ]
+    for key,value in state:
+        tests.append( {
+            'name': '2d.state.saverestore.%s' % key,
+            'desc': 'save()/restore() works for %s' % key,
+            'code':
+    """// Test that restore() undoes any modifications
+    var old = ctx.%(key)s;
+    ctx.save();
+    ctx.%(key)s = %(value)s;
+    ctx.restore();
+    @assert ctx.%(key)s === old;
+
+    // Also test that save() doesn't modify the values
+    ctx.%(key)s = %(value)s;
+    old = ctx.%(key)s;
+        // we're not interested in failures caused by get(set(x)) != x (e.g.
+        // from rounding), so compare against 'old' instead of against %(value)s
+    ctx.save();
+    @assert ctx.%(key)s === old;
+    ctx.restore();
+    """ % { 'key':key, 'value':value }
+        } )
+
+    tests.append( {
+        'name': 'initial.reset.2dstate',
+        'desc': 'Resetting the canvas state resets 2D state variables',
+        'code':
+    """canvas.width = 100;
+    var default_val;
+    """ + "".join(
+    """
+    default_val = ctx.%(key)s;
+    ctx.%(key)s = %(value)s;
+    canvas.width = 100;
+    @assert ctx.%(key)s === default_val;
+    """ % { 'key':key, 'value':value }
+        for key,value in state),
+    } )
+
+- meta: |
+    # Composite operation tests
+    # 
+    ops = [
+        # name               FA      FB
+        ('source-over',      '1',    '1-aA'),
+        ('destination-over', '1-aB', '1'),
+        ('source-in',        'aB',   '0'),
+        ('destination-in',   '0',    'aA'),
+        ('source-out',       '1-aB', '0'),
+        ('destination-out',  '0',    '1-aA'),
+        ('source-atop',      'aB',   '1-aA'),
+        ('destination-atop', '1-aB', 'aA'),
+        ('xor',              '1-aB', '1-aA'),
+        ('copy',             '1',    '0'),
+        ('lighter',          '1',    '1'),
+        ('clear',            '0',    '0'),
+    ]
+
+    # The ones that change the output when src = (0,0,0,0):
+    ops_trans = [ 'source-in', 'destination-in', 'source-out', 'destination-atop', 'copy' ];
+
+    def calc_output(A, B, FA_code, FB_code):
+        (RA, GA, BA, aA) = A
+        (RB, GB, BB, aB) = B
+        rA, gA, bA = RA*aA, GA*aA, BA*aA
+        rB, gB, bB = RB*aB, GB*aB, BB*aB
+
+        FA = eval(FA_code)
+        FB = eval(FB_code)
+
+        rO = rA*FA + rB*FB
+        gO = gA*FA + gB*FB
+        bO = bA*FA + bB*FB
+        aO = aA*FA + aB*FB
+
+        rO = min(255, rO)
+        gO = min(255, gO)
+        bO = min(255, bO)
+        aO = min(1, aO)
+
+        if aO:
+            RO = rO / aO
+            GO = gO / aO
+            BO = bO / aO
+        else: RO = GO = BO = 0
+
+        return (RO, GO, BO, aO)
+
+    def to_test(color):
+        r, g, b, a = color
+        return '%d,%d,%d,%d' % (round(r), round(g), round(b), round(a*255))
+    def to_cairo(color):
+        r, g, b, a = color
+        return '%f,%f,%f,%f' % (r/255., g/255., b/255., a)
+
+    for (name, src, dest) in [
+        ('solid', (255, 255, 0, 1.0), (0, 255, 255, 1.0)),
+        ('transparent', (0, 0, 255, 0.75), (0, 255, 0, 0.5)),
+            # catches the atop, xor and lighter bugs in Opera 9.10
+    ]:
+        for op, FA_code, FB_code in ops:
+            expected = calc_output(src, dest, FA_code, FB_code)
+            tests.append( {
+                'name': '2d.composite.%s.%s' % (name, op),
+                'code': """
+    ctx.fillStyle = 'rgba%s';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.globalCompositeOperation = '%s';
+    ctx.fillStyle = 'rgba%s';
+    ctx.fillRect(0, 0, 100, 50);
+    @assert pixel 50,25 ==~ %s +/- 5;
+    """ % (dest, op, src, to_test(expected)),
+                'expected': """size 100 50
+    cr.set_source_rgba(%s)
+    cr.rectangle(0, 0, 100, 50)
+    cr.fill()
+    """ % to_cairo(expected),
+            } )
+
+    for (name, src, dest) in [ ('image', (255, 255, 0, 0.75), (0, 255, 255, 0.5)) ]:
+        for op, FA_code, FB_code in ops:
+            expected = calc_output(src, dest, FA_code, FB_code)
+            tests.append( {
+                'name': '2d.composite.%s.%s' % (name, op),
+                'images': [ 'yellow75.png' ],
+                'code': """
+    ctx.fillStyle = 'rgba%s';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.globalCompositeOperation = '%s';
+    ctx.drawImage(document.getElementById('yellow75.png'), 0, 0);
+    @assert pixel 50,25 ==~ %s +/- 5;
+    """ % (dest, op, to_test(expected)),
+                'expected': """size 100 50
+    cr.set_source_rgba(%s)
+    cr.rectangle(0, 0, 100, 50)
+    cr.fill()
+    """ % to_cairo(expected),
+            } )
+
+    for (name, src, dest) in [ ('canvas', (255, 255, 0, 0.75), (0, 255, 255, 0.5)) ]:
+        for op, FA_code, FB_code in ops:
+            expected = calc_output(src, dest, FA_code, FB_code)
+            tests.append( {
+                'name': '2d.composite.%s.%s' % (name, op),
+                'images': [ 'yellow75.png' ],
+                'code': """
+    var canvas2 = document.createElement('canvas');
+    canvas2.width = canvas.width;
+    canvas2.height = canvas.height;
+    var ctx2 = canvas2.getContext('2d');
+    ctx2.drawImage(document.getElementById('yellow75.png'), 0, 0);
+    ctx.fillStyle = 'rgba%s';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.globalCompositeOperation = '%s';
+    ctx.drawImage(canvas2, 0, 0);
+    @assert pixel 50,25 ==~ %s +/- 5;
+    """ % (dest, op, to_test(expected)),
+                'expected': """size 100 50
+    cr.set_source_rgba(%s)
+    cr.rectangle(0, 0, 100, 50)
+    cr.fill()
+    """ % to_cairo(expected),
+            } )
+
+
+    for (name, src, dest) in [ ('uncovered.fill', (0, 0, 255, 0.75), (0, 255, 0, 0.5)) ]:
+        for op, FA_code, FB_code in ops:
+            if op not in ops_trans: continue
+            expected0 = calc_output((0,0,0,0.0), dest, FA_code, FB_code)
+            tests.append( {
+                'name': '2d.composite.%s.%s' % (name, op),
+                'desc': 'fill() draws pixels not covered by the source object as (0,0,0,0), and does not leave the pixels unchanged.',
+                'code': """
+    ctx.fillStyle = 'rgba%s';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.globalCompositeOperation = '%s';
+    ctx.fillStyle = 'rgba%s';
+    ctx.translate(0, 25);
+    ctx.fillRect(0, 50, 100, 50);
+    @assert pixel 50,25 ==~ %s +/- 5;
+    """ % (dest, op, src, to_test(expected0)),
+                'expected': """size 100 50
+    cr.set_source_rgba(%s)
+    cr.rectangle(0, 0, 100, 50)
+    cr.fill()
+    """ % (to_cairo(expected0)),
+            } )
+
+    for (name, src, dest) in [ ('uncovered.image', (255, 255, 0, 1.0), (0, 255, 255, 0.5)) ]:
+        for op, FA_code, FB_code in ops:
+            if op not in ops_trans: continue
+            expected0 = calc_output((0,0,0,0.0), dest, FA_code, FB_code)
+            tests.append( {
+                'name': '2d.composite.%s.%s' % (name, op),
+                'desc': 'drawImage() draws pixels not covered by the source object as (0,0,0,0), and does not leave the pixels unchanged.',
+                'images': [ 'yellow.png' ],
+                'code': """
+    ctx.fillStyle = 'rgba%s';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.globalCompositeOperation = '%s';
+    ctx.drawImage(document.getElementById('yellow.png'), 40, 40, 10, 10, 40, 50, 10, 10);
+    @assert pixel 15,15 ==~ %s +/- 5;
+    @assert pixel 50,25 ==~ %s +/- 5;
+    """ % (dest, op, to_test(expected0), to_test(expected0)),
+                'expected': """size 100 50
+    cr.set_source_rgba(%s)
+    cr.rectangle(0, 0, 100, 50)
+    cr.fill()
+    """ % (to_cairo(expected0)),
+            } )
+
+    for (name, src, dest) in [ ('uncovered.nocontext', (255, 255, 0, 1.0), (0, 255, 255, 0.5)) ]:
+        for op, FA_code, FB_code in ops:
+            if op not in ops_trans: continue
+            expected0 = calc_output((0,0,0,0.0), dest, FA_code, FB_code)
+            tests.append( {
+                'name': '2d.composite.%s.%s' % (name, op),
+                'desc': 'drawImage() of a canvas with no context draws pixels as (0,0,0,0), and does not leave the pixels unchanged.',
+                'code': """
+    ctx.fillStyle = 'rgba%s';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.globalCompositeOperation = '%s';
+    var canvas2 = document.createElement('canvas');
+    ctx.drawImage(canvas2, 0, 0);
+    @assert pixel 50,25 ==~ %s +/- 5;
+    """ % (dest, op, to_test(expected0)),
+                'expected': """size 100 50
+    cr.set_source_rgba(%s)
+    cr.rectangle(0, 0, 100, 50)
+    cr.fill()
+    """ % (to_cairo(expected0)),
+            } )
+
+    for (name, src, dest) in [ ('uncovered.pattern', (255, 255, 0, 1.0), (0, 255, 255, 0.5)) ]:
+        for op, FA_code, FB_code in ops:
+            if op not in ops_trans: continue
+            expected0 = calc_output((0,0,0,0.0), dest, FA_code, FB_code)
+            tests.append( {
+                'name': '2d.composite.%s.%s' % (name, op),
+                'desc': 'Pattern fill() draws pixels not covered by the source object as (0,0,0,0), and does not leave the pixels unchanged.',
+                'images': [ 'yellow.png' ],
+                'code': """
+    ctx.fillStyle = 'rgba%s';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.globalCompositeOperation = '%s';
+    ctx.fillStyle = ctx.createPattern(document.getElementById('yellow.png'), 'no-repeat');
+    ctx.fillRect(0, 50, 100, 50);
+    @assert pixel 50,25 ==~ %s +/- 5;
+    """ % (dest, op, to_test(expected0)),
+                'expected': """size 100 50
+    cr.set_source_rgba(%s)
+    cr.rectangle(0, 0, 100, 50)
+    cr.fill()
+    """ % (to_cairo(expected0)),
+            } )
+
+    for op, FA_code, FB_code in ops:
+        tests.append( {
+            'name': '2d.composite.clip.%s' % (op),
+            'desc': 'fill() does not affect pixels outside the clip region.',
+            'code': """
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.globalCompositeOperation = '%s';
+    ctx.rect(-20, -20, 10, 10);
+    ctx.clip();
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 50, 50);
+    @assert pixel 25,25 == 0,255,0,255;
+    @assert pixel 75,25 == 0,255,0,255;
+    """ % (op),
+                'expected': 'green'
+        } )
+
+- meta: |
+    # Color parsing tests
+
+    # Try most of the CSS3 Color  values - http://www.w3.org/TR/css3-color/#colorunits
+    big_float = '1' + ('0' * 39)
+    big_double = '1' + ('0' * 310)
+    for name, string, r,g,b,a, notes in [
+        ('html4', 'limE', 0,255,0,255, ""),
+        ('hex3', '#0f0', 0,255,0,255, ""),
+        ('hex4', '#0f0f', 0,255,0,255, ""),
+        ('hex6', '#00fF00', 0,255,0,255, ""),
+        ('hex8', '#00ff00ff', 0,255,0,255, ""),
+        ('rgb-num', 'rgb(0,255,0)', 0,255,0,255, ""),
+        ('rgb-clamp-1', 'rgb(-1000, 1000, -1000)', 0,255,0,255, 'Assumes colors are clamped to [0,255].'),
+        ('rgb-clamp-2', 'rgb(-200%, 200%, -200%)', 0,255,0,255, 'Assumes colors are clamped to [0,255].'),
+        ('rgb-clamp-3', 'rgb(-2147483649, 4294967298, -18446744073709551619)', 0,255,0,255, 'Assumes colors are clamped to [0,255].'),
+        ('rgb-clamp-4', 'rgb(-'+big_float+', '+big_float+', -'+big_float+')', 0,255,0,255, 'Assumes colors are clamped to [0,255].'),
+        ('rgb-clamp-5', 'rgb(-'+big_double+', '+big_double+', -'+big_double+')', 0,255,0,255, 'Assumes colors are clamped to [0,255].'),
+        ('rgb-percent', 'rgb(0% ,100% ,0%)', 0,255,0,255, 'CSS3 Color says "The integer value 255 corresponds to 100%". (In particular, it is not 254...)'),
+        ('rgb-eof', 'rgb(0, 255, 0', 0,255,0,255, ""), # see CSS2.1 4.2 "Unexpected end of style sheet"
+        ('rgba-solid-1', 'rgba(  0  ,  255  ,  0  ,  1  )', 0,255,0,255, ""),
+        ('rgba-solid-2', 'rgba(  0  ,  255  ,  0  ,  1.0  )', 0,255,0,255, ""),
+        ('rgba-solid-3', 'rgba(  0  ,  255  ,  0  , +1  )', 0,255,0,255, ""),
+        ('rgba-solid-4', 'rgba( -0  ,  255  , +0  ,  1  )', 0,255,0,255, ""),
+        ('rgba-num-1', 'rgba(  0  ,  255  ,  0  ,  .499  )', 0,255,0,127, ""),
+        ('rgba-num-2', 'rgba(  0  ,  255  ,  0  ,  0.499  )', 0,255,0,127, ""),
+        ('rgba-percent', 'rgba(0%,100%,0%,0.499)', 0,255,0,127, ""), # 0.499*255 rounds to 127, both down and nearest, so it should be safe
+        ('rgba-clamp-1', 'rgba(0, 255, 0, -2)', 0,0,0,0, ""),
+        ('rgba-clamp-2', 'rgba(0, 255, 0, 2)', 0,255,0,255, ""),
+        ('rgba-eof', 'rgba(0, 255, 0, 1', 0,255,0,255, ""),
+        ('transparent-1', 'transparent', 0,0,0,0, ""),
+        ('transparent-2', 'TrAnSpArEnT', 0,0,0,0, ""),
+        ('hsl-1', 'hsl(120, 100%, 50%)', 0,255,0,255, ""),
+        ('hsl-2', 'hsl( -240 , 100% , 50% )', 0,255,0,255, ""),
+        ('hsl-3', 'hsl(360120, 100%, 50%)', 0,255,0,255, ""),
+        ('hsl-4', 'hsl(-360240, 100%, 50%)', 0,255,0,255, ""),
+        ('hsl-5', 'hsl(120.0, 100.0%, 50.0%)', 0,255,0,255, ""),
+        ('hsl-6', 'hsl(+120, +100%, +50%)', 0,255,0,255, ""),
+        ('hsl-clamp-1', 'hsl(120, 200%, 50%)', 0,255,0,255, ""),
+        ('hsl-clamp-2', 'hsl(120, -200%, 49.9%)', 127,127,127,255, ""),
+        ('hsl-clamp-3', 'hsl(120, 100%, 200%)', 255,255,255,255, ""),
+        ('hsl-clamp-4', 'hsl(120, 100%, -200%)', 0,0,0,255, ""),
+        ('hsla-1', 'hsla(120, 100%, 50%, 0.499)', 0,255,0,127, ""),
+        ('hsla-2', 'hsla( 120.0 , 100.0% , 50.0% , 1 )', 0,255,0,255, ""),
+        ('hsla-clamp-1', 'hsla(120, 200%, 50%, 1)', 0,255,0,255, ""),
+        ('hsla-clamp-2', 'hsla(120, -200%, 49.9%, 1)', 127,127,127,255, ""),
+        ('hsla-clamp-3', 'hsla(120, 100%, 200%, 1)', 255,255,255,255, ""),
+        ('hsla-clamp-4', 'hsla(120, 100%, -200%, 1)', 0,0,0,255, ""),
+        ('hsla-clamp-5', 'hsla(120, 100%, 50%, 2)', 0,255,0,255, ""),
+        ('hsla-clamp-6', 'hsla(120, 100%, 0%, -2)', 0,0,0,0, ""),
+        ('svg-1', 'gray', 128,128,128,255, ""),
+        ('svg-2', 'grey', 128,128,128,255, ""),
+        # css-color-4 rgb() color function
+        #   https://drafts.csswg.org/css-color/#numeric-rgb
+        ('css-color-4-rgb-1', 'rgb(0, 255.0, 0)', 0,255,0,255, ""),
+        ('css-color-4-rgb-2', 'rgb(0, 255, 0, 0.2)', 0,255,0,51, ""),
+        ('css-color-4-rgb-3', 'rgb(0, 255, 0, 20%)', 0,255,0,51, ""),
+        ('css-color-4-rgb-4', 'rgb(0 255 0)', 0,255,0,255, ""),
+        ('css-color-4-rgb-5', 'rgb(0 255 0 / 0.2)', 0,255,0,51, ""),
+        ('css-color-4-rgb-6', 'rgb(0 255 0 / 20%)', 0,255,0,51, ""),
+        ('css-color-4-rgba-1', 'rgba(0, 255.0, 0)', 0,255,0,255, ""),
+        ('css-color-4-rgba-2', 'rgba(0, 255, 0, 0.2)', 0,255,0,51, ""),
+        ('css-color-4-rgba-3', 'rgba(0, 255, 0, 20%)', 0,255,0,51, ""),
+        ('css-color-4-rgba-4', 'rgba(0 255 0)', 0,255,0,255, ""),
+        ('css-color-4-rgba-5', 'rgba(0 255 0 / 0.2)', 0,255,0,51, ""),
+        ('css-color-4-rgba-6', 'rgba(0 255 0 / 20%)', 0,255,0,51, ""),
+        # css-color-4 hsl() color function
+        #   https://drafts.csswg.org/css-color/#the-hsl-notation
+        ('css-color-4-hsl-1', 'hsl(120 100.0% 50.0%)', 0,255,0,255, ""),
+        ('css-color-4-hsl-2', 'hsl(120 100.0% 50.0% / 0.2)', 0,255,0,51, ""),
+        ('css-color-4-hsl-3', 'hsl(120.0, 100.0%, 50.0%, 0.2)', 0,255,0,51, ""),
+        ('css-color-4-hsl-4', 'hsl(120.0, 100.0%, 50.0%, 20%)', 0,255,0,51, ""),
+        ('css-color-4-hsl-5', 'hsl(120deg, 100.0%, 50.0%, 0.2)', 0,255,0,51, ""),
+        ('css-color-4-hsl-6', 'hsl(120deg, 100.0%, 50.0%)', 0,255,0,255, ""),
+        ('css-color-4-hsl-7', 'hsl(133.33333333grad, 100.0%, 50.0%)', 0,255,0,255, ""),
+        ('css-color-4-hsl-8', 'hsl(2.0943951024rad, 100.0%, 50.0%)', 0,255,0,255, ""),
+        ('css-color-4-hsl-9', 'hsl(0.3333333333turn, 100.0%, 50.0%)', 0,255,0,255, ""),
+        ('css-color-4-hsla-1', 'hsl(120 100.0% 50.0%)', 0,255,0,255, ""),
+        ('css-color-4-hsla-2', 'hsl(120 100.0% 50.0% / 0.2)', 0,255,0,51, ""),
+        ('css-color-4-hsla-3', 'hsl(120.0, 100.0%, 50.0%, 0.2)', 0,255,0,51, ""),
+        ('css-color-4-hsla-4', 'hsl(120.0, 100.0%, 50.0%, 20%)', 0,255,0,51, ""),
+        ('css-color-4-hsla-5', 'hsl(120deg, 100.0%, 50.0%, 0.2)', 0,255,0,51, ""),
+        ('css-color-4-hsla-6', 'hsl(120deg, 100.0%, 50.0%)', 0,255,0,255, ""),
+        ('css-color-4-hsla-7', 'hsl(133.33333333grad, 100.0%, 50.0%)', 0,255,0,255, ""),
+        ('css-color-4-hsla-8', 'hsl(2.0943951024rad, 100.0%, 50.0%)', 0,255,0,255, ""),
+        ('css-color-4-hsla-9', 'hsl(0.3333333333turn, 100.0%, 50.0%)', 0,255,0,255, ""),
+        # currentColor is handled later
+    ]:
+        # TODO: test by retrieving fillStyle, instead of actually drawing?
+        # TODO: test strokeStyle, shadowColor in the same way
+        test = {
+            'name': '2d.fillStyle.parse.%s' % name,
+            'notes': notes,
+            'code': """
+    ctx.fillStyle = '#f00';
+    ctx.fillStyle = '%s';
+    ctx.fillRect(0, 0, 100, 50);
+    @assert pixel 50,25 == %d,%d,%d,%d;
+    """ % (string, r,g,b,a),
+            'expected': """size 100 50
+    cr.set_source_rgba(%f, %f, %f, %f)
+    cr.rectangle(0, 0, 100, 50)
+    cr.fill()
+    """ % (r/255., g/255., b/255., a/255.),
+        }
+        tests.append(test)
+
+    # Also test that invalid colors are ignored
+    for name, string in [
+        ('hex1', '#f'),
+        ('hex2', '#f0'),
+        ('hex3', '#g00'),
+        ('hex4', '#fg00'),
+        ('hex5', '#ff000'),
+        ('hex6', '#fg0000'),
+        ('hex7', '#ff0000f'),
+        ('hex8', '#fg0000ff'),
+        ('rgb-1', 'rgb(255.0, 0, 0,)'),
+        ('rgb-2', 'rgb(100%, 0, 0)'),
+        ('rgb-3', 'rgb(255, - 1, 0)'),
+        ('rgba-1', 'rgba(100%, 0, 0, 1)'),
+        ('rgba-2', 'rgba(255, 0, 0, 1. 0)'),
+        ('rgba-3', 'rgba(255, 0, 0, 1.)'),
+        ('rgba-4', 'rgba(255, 0, 0, '),
+        ('rgba-5', 'rgba(255, 0, 0, 1,)'),
+        ('hsl-1', 'hsl(0%, 100%, 50%)'),
+        ('hsl-2', 'hsl(z, 100%, 50%)'),
+        ('hsl-3', 'hsl(0, 0, 50%)'),
+        ('hsl-4', 'hsl(0, 100%, 0)'),
+        ('hsl-5', 'hsl(0, 100.%, 50%)'),
+        ('hsl-6', 'hsl(0, 100%, 50%,)'),
+        ('hsla-1', 'hsla(0%, 100%, 50%, 1)'),
+        ('hsla-2', 'hsla(0, 0, 50%, 1)'),
+        ('hsla-3', 'hsla(0, 0, 50%, 1,)'),
+        ('name-1', 'darkbrown'),
+        ('name-2', 'firebrick1'),
+        ('name-3', 'red blue'),
+        ('name-4', '"red"'),
+        ('name-5', '"red'),
+        # css-color-4 color function
+        #   comma and comma-less expressions should not mix together.
+        ('css-color-4-rgb-1', 'rgb(255, 0, 0 / 1)'),
+        ('css-color-4-rgb-2', 'rgb(255 0 0, 1)'),
+        ('css-color-4-rgb-3', 'rgb(255, 0 0)'),
+        ('css-color-4-rgba-1', 'rgba(255, 0, 0 / 1)'),
+        ('css-color-4-rgba-2', 'rgba(255 0 0, 1)'),
+        ('css-color-4-rgba-3', 'rgba(255, 0 0)'),
+        ('css-color-4-hsl-1', 'hsl(0, 100%, 50% / 1)'),
+        ('css-color-4-hsl-2', 'hsl(0 100% 50%, 1)'),
+        ('css-color-4-hsl-3', 'hsl(0, 100% 50%)'),
+        ('css-color-4-hsla-1', 'hsla(0, 100%, 50% / 1)'),
+        ('css-color-4-hsla-2', 'hsla(0 100% 50%, 1)'),
+        ('css-color-4-hsla-3', 'hsla(0, 100% 50%)'),
+        #  trailing slash
+        ('css-color-4-rgb-4', 'rgb(0 0 0 /)'),
+        ('css-color-4-rgb-5', 'rgb(0, 0, 0 /)'),
+        ('css-color-4-hsl-4', 'hsl(0 100% 50% /)'),
+        ('css-color-4-hsl-5', 'hsl(0, 100%, 50% /)'),
+    ]:
+        test = {
+            'name': '2d.fillStyle.parse.invalid.%s' % name,
+            'code': """
+    ctx.fillStyle = '#0f0';
+    try { ctx.fillStyle = '%s'; } catch (e) { } // this shouldn't throw, but it shouldn't matter here if it does
+    ctx.fillRect(0, 0, 100, 50);
+    @assert pixel 50,25 == 0,255,0,255;
+    """ % string,
+            'expected': 'green'
+        }
+        tests.append(test)
+
+    # Some can't have positive tests, only negative tests, because we don't know what color they're meant to be
+    for name, string in [
+        ('system', 'ThreeDDarkShadow'),
+        #('flavor', 'flavor'), # removed from latest CSS3 Color drafts
+    ]:
+        test = {
+            'name': '2d.fillStyle.parse.%s' % name,
+            'code': """
+    ctx.fillStyle = '#f00';
+    ctx.fillStyle = '%s';
+    @assert ctx.fillStyle =~ /^#(?!(FF0000|ff0000|f00)$)/; // test that it's not red
+    """ % (string,),
+        }
+        tests.append(test)
diff --git a/testing/web-platform/tests/html/canvas/tools/yaml/element/shadows.yaml b/testing/web-platform/tests/html/canvas/tools/yaml/element/shadows.yaml
new file mode 100644
index 0000000000..7a7c115a7c
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/tools/yaml/element/shadows.yaml
@@ -0,0 +1,1025 @@
+- name: 2d.shadow.attributes.shadowBlur.initial
+  code: |
+    @assert ctx.shadowBlur === 0;
+
+- name: 2d.shadow.attributes.shadowBlur.valid
+  code: |
+    ctx.shadowBlur = 1;
+    @assert ctx.shadowBlur === 1;
+
+    ctx.shadowBlur = 0.5;
+    @assert ctx.shadowBlur === 0.5;
+
+    ctx.shadowBlur = 1e6;
+    @assert ctx.shadowBlur === 1e6;
+
+    ctx.shadowBlur = 0;
+    @assert ctx.shadowBlur === 0;
+
+- name: 2d.shadow.attributes.shadowBlur.invalid
+  code: |
+    ctx.shadowBlur = 1;
+    ctx.shadowBlur = -2;
+    @assert ctx.shadowBlur === 1;
+
+    ctx.shadowBlur = 1;
+    ctx.shadowBlur = Infinity;
+    @assert ctx.shadowBlur === 1;
+
+    ctx.shadowBlur = 1;
+    ctx.shadowBlur = -Infinity;
+    @assert ctx.shadowBlur === 1;
+
+    ctx.shadowBlur = 1;
+    ctx.shadowBlur = NaN;
+    @assert ctx.shadowBlur === 1;
+
+    ctx.shadowBlur = 1;
+    ctx.shadowBlur = 'string';
+    @assert ctx.shadowBlur === 1;
+
+    ctx.shadowBlur = 1;
+    ctx.shadowBlur = true;
+    @assert ctx.shadowBlur === 1;
+
+    ctx.shadowBlur = 1;
+    ctx.shadowBlur = false;
+    @assert ctx.shadowBlur === 0;
+
+- name: 2d.shadow.attributes.shadowOffset.initial
+  code: |
+    @assert ctx.shadowOffsetX === 0;
+    @assert ctx.shadowOffsetY === 0;
+
+- name: 2d.shadow.attributes.shadowOffset.valid
+  code: |
+    ctx.shadowOffsetX = 1;
+    ctx.shadowOffsetY = 2;
+    @assert ctx.shadowOffsetX === 1;
+    @assert ctx.shadowOffsetY === 2;
+
+    ctx.shadowOffsetX = 0.5;
+    ctx.shadowOffsetY = 0.25;
+    @assert ctx.shadowOffsetX === 0.5;
+    @assert ctx.shadowOffsetY === 0.25;
+
+    ctx.shadowOffsetX = -0.5;
+    ctx.shadowOffsetY = -0.25;
+    @assert ctx.shadowOffsetX === -0.5;
+    @assert ctx.shadowOffsetY === -0.25;
+
+    ctx.shadowOffsetX = 0;
+    ctx.shadowOffsetY = 0;
+    @assert ctx.shadowOffsetX === 0;
+    @assert ctx.shadowOffsetY === 0;
+
+    ctx.shadowOffsetX = 1e6;
+    ctx.shadowOffsetY = 1e6;
+    @assert ctx.shadowOffsetX === 1e6;
+    @assert ctx.shadowOffsetY === 1e6;
+
+- name: 2d.shadow.attributes.shadowOffset.invalid
+  code: |
+    ctx.shadowOffsetX = 1;
+    ctx.shadowOffsetY = 2;
+    ctx.shadowOffsetX = Infinity;
+    ctx.shadowOffsetY = Infinity;
+    @assert ctx.shadowOffsetX === 1;
+    @assert ctx.shadowOffsetY === 2;
+
+    ctx.shadowOffsetX = 1;
+    ctx.shadowOffsetY = 2;
+    ctx.shadowOffsetX = -Infinity;
+    ctx.shadowOffsetY = -Infinity;
+    @assert ctx.shadowOffsetX === 1;
+    @assert ctx.shadowOffsetY === 2;
+
+    ctx.shadowOffsetX = 1;
+    ctx.shadowOffsetY = 2;
+    ctx.shadowOffsetX = NaN;
+    ctx.shadowOffsetY = NaN;
+    @assert ctx.shadowOffsetX === 1;
+    @assert ctx.shadowOffsetY === 2;
+
+    ctx.shadowOffsetX = 1;
+    ctx.shadowOffsetY = 2;
+    ctx.shadowOffsetX = 'string';
+    ctx.shadowOffsetY = 'string';
+    @assert ctx.shadowOffsetX === 1;
+    @assert ctx.shadowOffsetY === 2;
+
+    ctx.shadowOffsetX = 1;
+    ctx.shadowOffsetY = 2;
+    ctx.shadowOffsetX = true;
+    ctx.shadowOffsetY = true;
+    @assert ctx.shadowOffsetX === 1;
+    @assert ctx.shadowOffsetY === 1;
+
+    ctx.shadowOffsetX = 1;
+    ctx.shadowOffsetY = 2;
+    ctx.shadowOffsetX = false;
+    ctx.shadowOffsetY = false;
+    @assert ctx.shadowOffsetX === 0;
+    @assert ctx.shadowOffsetY === 0;
+
+- name: 2d.shadow.attributes.shadowColor.initial
+  code: |
+    @assert ctx.shadowColor === 'rgba(0, 0, 0, 0)';
+
+- name: 2d.shadow.attributes.shadowColor.valid
+  code: |
+    ctx.shadowColor = 'lime';
+    @assert ctx.shadowColor === '#00ff00';
+
+    ctx.shadowColor = 'RGBA(0,255, 0,0)';
+    @assert ctx.shadowColor === 'rgba(0, 255, 0, 0)';
+
+- name: 2d.shadow.attributes.shadowColor.invalid
+  code: |
+    ctx.shadowColor = '#00ff00';
+    ctx.shadowColor = 'bogus';
+    @assert ctx.shadowColor === '#00ff00';
+
+    ctx.shadowColor = '#00ff00';
+    ctx.shadowColor = 'red bogus';
+    @assert ctx.shadowColor === '#00ff00';
+
+    ctx.shadowColor = '#00ff00';
+    ctx.shadowColor = ctx;
+    @assert ctx.shadowColor === '#00ff00';
+
+    ctx.shadowColor = '#00ff00';
+    ctx.shadowColor = undefined;
+    @assert ctx.shadowColor === '#00ff00';
+
+- name: 2d.shadow.enable.off.1
+  desc: Shadows are not drawn when only shadowColor is set
+  code: |
+    ctx.shadowColor = '#f00';
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 100, 50);
+    @assert pixel 50,25 == 0,255,0,255;
+  expected: green
+
+- name: 2d.shadow.enable.off.2
+  desc: Shadows are not drawn when only shadowColor is set
+  code: |
+    ctx.globalCompositeOperation = 'destination-atop';
+    ctx.shadowColor = '#f00';
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 100, 50);
+    @assert pixel 50,25 == 0,255,0,255;
+  expected: green
+
+- name: 2d.shadow.enable.blur
+  desc: Shadows are drawn if shadowBlur is set
+  code: |
+    ctx.globalCompositeOperation = 'destination-atop';
+    ctx.shadowColor = '#0f0';
+    ctx.shadowBlur = 0.1;
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+    @assert pixel 50,25 == 0,255,0,255;
+  expected: green
+
+- name: 2d.shadow.enable.x
+  desc: Shadows are drawn if shadowOffsetX is set
+  code: |
+    ctx.globalCompositeOperation = 'destination-atop';
+    ctx.shadowColor = '#0f0';
+    ctx.shadowOffsetX = 0.1;
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+    @assert pixel 50,25 == 0,255,0,255;
+  expected: green
+
+- name: 2d.shadow.enable.y
+  desc: Shadows are drawn if shadowOffsetY is set
+  code: |
+    ctx.globalCompositeOperation = 'destination-atop';
+    ctx.shadowColor = '#0f0';
+    ctx.shadowOffsetY = 0.1;
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+    @assert pixel 50,25 == 0,255,0,255;
+  expected: green
+
+- name: 2d.shadow.offset.positiveX
+  desc: Shadows can be offset with positive x
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.fillStyle = '#0f0';
+    ctx.shadowColor = '#0f0';
+    ctx.shadowOffsetX = 50;
+    ctx.fillRect(0, 0, 50, 50);
+    @assert pixel 25,25 == 0,255,0,255;
+    @assert pixel 75,25 == 0,255,0,255;
+  expected: green
+
+- name: 2d.shadow.offset.negativeX
+  desc: Shadows can be offset with negative x
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.fillStyle = '#0f0';
+    ctx.shadowColor = '#0f0';
+    ctx.shadowOffsetX = -50;
+    ctx.fillRect(50, 0, 50, 50);
+    @assert pixel 25,25 == 0,255,0,255;
+    @assert pixel 75,25 == 0,255,0,255;
+  expected: green
+
+- name: 2d.shadow.offset.positiveY
+  desc: Shadows can be offset with positive y
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.fillStyle = '#0f0';
+    ctx.shadowColor = '#0f0';
+    ctx.shadowOffsetY = 25;
+    ctx.fillRect(0, 0, 100, 25);
+    @assert pixel 50,12 == 0,255,0,255;
+    @assert pixel 50,37 == 0,255,0,255;
+  expected: green
+
+- name: 2d.shadow.offset.negativeY
+  desc: Shadows can be offset with negative y
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.fillStyle = '#0f0';
+    ctx.shadowColor = '#0f0';
+    ctx.shadowOffsetY = -25;
+    ctx.fillRect(0, 25, 100, 25);
+    @assert pixel 50,12 == 0,255,0,255;
+    @assert pixel 50,37 == 0,255,0,255;
+  expected: green
+
+- name: 2d.shadow.outside
+  desc: Shadows of shapes outside the visible area can be offset onto the visible
+    area
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.shadowColor = '#0f0';
+    ctx.shadowOffsetX = 100;
+    ctx.fillRect(-100, 0, 25, 50);
+    ctx.shadowOffsetX = -100;
+    ctx.fillRect(175, 0, 25, 50);
+    ctx.shadowOffsetX = 0;
+    ctx.shadowOffsetY = 100;
+    ctx.fillRect(25, -100, 50, 25);
+    ctx.shadowOffsetY = -100;
+    ctx.fillRect(25, 125, 50, 25);
+    @assert pixel 12,25 == 0,255,0,255;
+    @assert pixel 87,25 == 0,255,0,255;
+    @assert pixel 50,12 == 0,255,0,255;
+    @assert pixel 50,37 == 0,255,0,255;
+  expected: green
+
+- name: 2d.shadow.clip.1
+  desc: Shadows of clipped shapes are still drawn within the clipping region
+  code: |
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 50, 50);
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(50, 0, 50, 50);
+
+    ctx.save();
+    ctx.beginPath();
+    ctx.rect(50, 0, 50, 50);
+    ctx.clip();
+    ctx.shadowColor = '#0f0';
+    ctx.shadowOffsetX = 50;
+    ctx.fillRect(0, 0, 50, 50);
+    ctx.restore();
+
+    @assert pixel 25,25 == 0,255,0,255;
+    @assert pixel 75,25 == 0,255,0,255;
+  expected: green
+
+- name: 2d.shadow.clip.2
+  desc: Shadows are not drawn outside the clipping region
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 50, 50);
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(50, 0, 50, 50);
+
+    ctx.save();
+    ctx.beginPath();
+    ctx.rect(0, 0, 50, 50);
+    ctx.clip();
+    ctx.shadowColor = '#f00';
+    ctx.shadowOffsetX = 50;
+    ctx.fillRect(0, 0, 50, 50);
+    ctx.restore();
+
+    @assert pixel 25,25 == 0,255,0,255;
+    @assert pixel 75,25 == 0,255,0,255;
+  expected: green
+
+- name: 2d.shadow.clip.3
+  desc: Shadows of clipped shapes are still drawn within the clipping region
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 50, 50);
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(50, 0, 50, 50);
+
+    ctx.save();
+    ctx.beginPath();
+    ctx.rect(0, 0, 50, 50);
+    ctx.clip();
+    ctx.fillStyle = '#f00';
+    ctx.shadowColor = '#0f0';
+    ctx.shadowOffsetX = 50;
+    ctx.fillRect(-50, 0, 50, 50);
+    ctx.restore();
+
+    @assert pixel 25,25 == 0,255,0,255;
+    @assert pixel 75,25 == 0,255,0,255;
+  expected: green
+
+- name: 2d.shadow.stroke.basic
+  desc: Shadows are drawn for strokes
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.strokeStyle = '#f00';
+    ctx.shadowColor = '#0f0';
+    ctx.shadowOffsetY = 50;
+    ctx.beginPath();
+    ctx.lineWidth = 50;
+    ctx.moveTo(0, -25);
+    ctx.lineTo(100, -25);
+    ctx.stroke();
+
+    @assert pixel 1,25 == 0,255,0,255;
+    @assert pixel 50,25 == 0,255,0,255;
+    @assert pixel 98,25 == 0,255,0,255;
+  expected: green
+
+- name: 2d.shadow.stroke.cap.1
+  desc: Shadows are not drawn for areas outside stroke caps
+  code: |
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.strokeStyle = '#f00';
+    ctx.shadowColor = '#f00';
+    ctx.shadowOffsetY = 50;
+    ctx.beginPath();
+    ctx.lineWidth = 50;
+    ctx.lineCap = 'butt';
+    ctx.moveTo(-50, -25);
+    ctx.lineTo(0, -25);
+    ctx.moveTo(100, -25);
+    ctx.lineTo(150, -25);
+    ctx.stroke();
+
+    @assert pixel 1,25 == 0,255,0,255;
+    @assert pixel 50,25 == 0,255,0,255;
+    @assert pixel 98,25 == 0,255,0,255;
+  expected: green
+
+- name: 2d.shadow.stroke.cap.2
+  desc: Shadows are drawn for stroke caps
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.strokeStyle = '#f00';
+    ctx.shadowColor = '#0f0';
+    ctx.shadowOffsetY = 50;
+    ctx.beginPath();
+    ctx.lineWidth = 50;
+    ctx.lineCap = 'square';
+    ctx.moveTo(25, -25);
+    ctx.lineTo(75, -25);
+    ctx.stroke();
+
+    @assert pixel 1,25 == 0,255,0,255;
+    @assert pixel 50,25 == 0,255,0,255;
+    @assert pixel 98,25 == 0,255,0,255;
+  expected: green
+
+- name: 2d.shadow.stroke.join.1
+  desc: Shadows are not drawn for areas outside stroke joins
+  code: |
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.strokeStyle = '#f00';
+    ctx.shadowColor = '#f00';
+    ctx.shadowOffsetX = 100;
+    ctx.lineWidth = 200;
+    ctx.lineJoin = 'bevel';
+    ctx.beginPath();
+    ctx.moveTo(-200, -50);
+    ctx.lineTo(-150, -50);
+    ctx.lineTo(-151, -100);
+    ctx.stroke();
+
+    @assert pixel 1,1 == 0,255,0,255;
+    @assert pixel 48,48 == 0,255,0,255;
+    @assert pixel 50,25 == 0,255,0,255;
+    @assert pixel 98,48 == 0,255,0,255;
+  expected: green
+
+- name: 2d.shadow.stroke.join.2
+  desc: Shadows are drawn for stroke joins
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 50, 50);
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(50, 0, 50, 50);
+    ctx.strokeStyle = '#f00';
+    ctx.shadowColor = '#0f0';
+    ctx.shadowOffsetX = 100;
+    ctx.lineWidth = 200;
+    ctx.lineJoin = 'miter';
+    ctx.beginPath();
+    ctx.moveTo(-200, -50);
+    ctx.lineTo(-150, -50);
+    ctx.lineTo(-151, -100);
+    ctx.stroke();
+
+    @assert pixel 1,1 == 0,255,0,255;
+    @assert pixel 48,48 == 0,255,0,255;
+    @assert pixel 50,25 == 0,255,0,255;
+    @assert pixel 98,48 == 0,255,0,255;
+  expected: green
+
+- name: 2d.shadow.stroke.join.3
+  desc: Shadows are drawn for stroke joins respecting miter limit
+  code: |
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.strokeStyle = '#f00';
+    ctx.shadowColor = '#f00';
+    ctx.shadowOffsetX = 100;
+    ctx.lineWidth = 200;
+    ctx.lineJoin = 'miter';
+    ctx.miterLimit = 0.1;
+    ctx.beginPath();
+    ctx.moveTo(-200, -50);
+    ctx.lineTo(-150, -50);
+    ctx.lineTo(-151, -100); // (not an exact right angle, to avoid some other bug in Firefox 3)
+    ctx.stroke();
+
+    @assert pixel 1,1 == 0,255,0,255;
+    @assert pixel 48,48 == 0,255,0,255;
+    @assert pixel 50,25 == 0,255,0,255;
+    @assert pixel 98,48 == 0,255,0,255;
+  expected: green
+
+- name: 2d.shadow.image.basic
+  desc: Shadows are drawn for images
+  images:
+  - red.png
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.shadowColor = '#0f0';
+    ctx.shadowOffsetY = 50;
+    ctx.drawImage(document.getElementById('red.png'), 0, -50);
+
+    @assert pixel 50,25 == 0,255,0,255;
+  expected: green
+
+- name: 2d.shadow.image.transparent.1
+  desc: Shadows are not drawn for transparent images
+  images:
+  - transparent.png
+  code: |
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.shadowColor = '#f00';
+    ctx.shadowOffsetY = 50;
+    ctx.drawImage(document.getElementById('transparent.png'), 0, -50);
+
+    @assert pixel 50,25 == 0,255,0,255;
+  expected: green
+
+- name: 2d.shadow.image.transparent.2
+  desc: Shadows are not drawn for transparent parts of images
+  images:
+  - redtransparent.png
+  code: |
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 50, 50);
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(50, 0, 50, 50);
+    ctx.shadowOffsetY = 50;
+    ctx.shadowColor = '#0f0';
+    ctx.drawImage(document.getElementById('redtransparent.png'), 50, -50);
+    ctx.shadowColor = '#f00';
+    ctx.drawImage(document.getElementById('redtransparent.png'), -50, -50);
+
+    @assert pixel 25,25 == 0,255,0,255;
+    @assert pixel 50,25 == 0,255,0,255;
+    @assert pixel 75,25 == 0,255,0,255;
+  expected: green
+
+- name: 2d.shadow.image.alpha
+  desc: Shadows are drawn correctly for partially-transparent images
+  images:
+  - transparent50.png
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.shadowOffsetY = 50;
+    ctx.shadowColor = '#00f';
+    ctx.drawImage(document.getElementById('transparent50.png'), 0, -50);
+
+    @assert pixel 50,25 ==~ 127,0,127,255;
+  expected: |
+    size 100 50
+    cr.set_source_rgb(0.5, 0, 0.5)
+    cr.rectangle(0, 0, 100, 50)
+    cr.fill()
+
+- name: 2d.shadow.image.section
+  desc: Shadows are not drawn for areas outside image source rectangles
+  images:
+  - redtransparent.png
+  code: |
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.shadowOffsetY = 50;
+    ctx.shadowColor = '#f00';
+    ctx.drawImage(document.getElementById('redtransparent.png'), 50, 0, 50, 50, 0, -50, 50, 50);
+
+    @assert pixel 25,25 ==~ 0,255,0,255;
+    @assert pixel 50,25 ==~ 0,255,0,255;
+    @assert pixel 75,25 ==~ 0,255,0,255;
+  expected: green
+
+- name: 2d.shadow.image.scale
+  desc: Shadows are drawn correctly for scaled images
+  images:
+  - redtransparent.png
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.shadowOffsetY = 50;
+    ctx.shadowColor = '#0f0';
+    ctx.drawImage(document.getElementById('redtransparent.png'), 0, 0, 100, 50, -10, -50, 240, 50);
+
+    @assert pixel 25,25 ==~ 0,255,0,255;
+    @assert pixel 50,25 ==~ 0,255,0,255;
+    @assert pixel 75,25 ==~ 0,255,0,255;
+  expected: green
+
+- name: 2d.shadow.canvas.basic
+  desc: Shadows are drawn for canvases
+  code: |
+    var canvas2 = document.createElement('canvas');
+    canvas2.width = 100;
+    canvas2.height = 50;
+    var ctx2 = canvas2.getContext('2d');
+    ctx2.fillStyle = '#f00';
+    ctx2.fillRect(0, 0, 100, 50);
+
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.shadowColor = '#0f0';
+    ctx.shadowOffsetY = 50;
+    ctx.drawImage(canvas2, 0, -50);
+
+    @assert pixel 50,25 == 0,255,0,255;
+  expected: green
+
+- name: 2d.shadow.canvas.transparent.1
+  desc: Shadows are not drawn for transparent canvases
+  code: |
+    var canvas2 = document.createElement('canvas');
+    canvas2.width = 100;
+    canvas2.height = 50;
+    var ctx2 = canvas2.getContext('2d');
+
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.shadowColor = '#f00';
+    ctx.shadowOffsetY = 50;
+    ctx.drawImage(canvas2, 0, -50);
+
+    @assert pixel 50,25 == 0,255,0,255;
+  expected: green
+
+- name: 2d.shadow.canvas.transparent.2
+  desc: Shadows are not drawn for transparent parts of canvases
+  code: |
+    var canvas2 = document.createElement('canvas');
+    canvas2.width = 100;
+    canvas2.height = 50;
+    var ctx2 = canvas2.getContext('2d');
+    ctx2.fillStyle = '#f00';
+    ctx2.fillRect(0, 0, 50, 50);
+
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 50, 50);
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(50, 0, 50, 50);
+    ctx.shadowOffsetY = 50;
+    ctx.shadowColor = '#0f0';
+    ctx.drawImage(canvas2, 50, -50);
+    ctx.shadowColor = '#f00';
+    ctx.drawImage(canvas2, -50, -50);
+
+    @assert pixel 25,25 == 0,255,0,255;
+    @assert pixel 50,25 == 0,255,0,255;
+    @assert pixel 75,25 == 0,255,0,255;
+  expected: green
+
+- name: 2d.shadow.canvas.alpha
+  desc: Shadows are drawn correctly for partially-transparent canvases
+  images:
+  - transparent50.png
+  code: |
+    var canvas2 = document.createElement('canvas');
+    canvas2.width = 100;
+    canvas2.height = 50;
+    var ctx2 = canvas2.getContext('2d');
+    ctx2.fillStyle = 'rgba(255, 0, 0, 0.5)';
+    ctx2.fillRect(0, 0, 100, 50);
+
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.shadowOffsetY = 50;
+    ctx.shadowColor = '#00f';
+    ctx.drawImage(canvas2, 0, -50);
+
+    @assert pixel 50,25 ==~ 127,0,127,255;
+  expected: |
+    size 100 50
+    cr.set_source_rgb(0.5, 0, 0.5)
+    cr.rectangle(0, 0, 100, 50)
+    cr.fill()
+
+- name: 2d.shadow.pattern.basic
+  desc: Shadows are drawn for fill patterns
+  # http://bugs.webkit.org/show_bug.cgi?id=15266
+  images:
+  - red.png
+  code: |
+    var pattern = ctx.createPattern(document.getElementById('red.png'), 'repeat');
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.shadowColor = '#0f0';
+    ctx.shadowOffsetY = 50;
+    ctx.fillStyle = pattern;
+    ctx.fillRect(0, -50, 100, 50);
+
+    @assert pixel 50,25 == 0,255,0,255;
+  expected: green
+
+- name: 2d.shadow.pattern.transparent.1
+  desc: Shadows are not drawn for transparent fill patterns
+  # http://bugs.webkit.org/show_bug.cgi?id=15266
+  images:
+  - transparent.png
+  code: |
+    var pattern = ctx.createPattern(document.getElementById('transparent.png'), 'repeat');
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.shadowColor = '#f00';
+    ctx.shadowOffsetY = 50;
+    ctx.fillStyle = pattern;
+    ctx.fillRect(0, -50, 100, 50);
+
+    @assert pixel 50,25 == 0,255,0,255;
+  expected: green
+
+- name: 2d.shadow.pattern.transparent.2
+  desc: Shadows are not drawn for transparent parts of fill patterns
+  # http://bugs.webkit.org/show_bug.cgi?id=15266
+  images:
+  - redtransparent.png
+  code: |
+    var pattern = ctx.createPattern(document.getElementById('redtransparent.png'), 'repeat');
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 50, 50);
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(50, 0, 50, 50);
+    ctx.shadowOffsetY = 50;
+    ctx.shadowColor = '#0f0';
+    ctx.fillStyle = pattern;
+    ctx.fillRect(0, -50, 100, 50);
+
+    @assert pixel 25,25 == 0,255,0,255;
+    @assert pixel 50,25 == 0,255,0,255;
+    @assert pixel 75,25 == 0,255,0,255;
+  expected: green
+
+- name: 2d.shadow.pattern.alpha
+  desc: Shadows are drawn correctly for partially-transparent fill patterns
+  # http://bugs.webkit.org/show_bug.cgi?id=15266
+  images:
+  - transparent50.png
+  code: |
+    var pattern = ctx.createPattern(document.getElementById('transparent50.png'), 'repeat');
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.shadowOffsetY = 50;
+    ctx.shadowColor = '#00f';
+    ctx.fillStyle = pattern;
+    ctx.fillRect(0, -50, 100, 50);
+
+    @assert pixel 50,25 ==~ 127,0,127,255;
+  expected: |
+    size 100 50
+    cr.set_source_rgb(0.5, 0, 0.5)
+    cr.rectangle(0, 0, 100, 50)
+    cr.fill()
+
+- name: 2d.shadow.gradient.basic
+  desc: Shadows are drawn for gradient fills
+  # http://bugs.webkit.org/show_bug.cgi?id=15266
+  code: |
+    var gradient = ctx.createLinearGradient(0, 0, 100, 0);
+    gradient.addColorStop(0, '#f00');
+    gradient.addColorStop(1, '#f00');
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.shadowColor = '#0f0';
+    ctx.shadowOffsetY = 50;
+    ctx.fillStyle = gradient;
+    ctx.fillRect(0, -50, 100, 50);
+
+    @assert pixel 50,25 == 0,255,0,255;
+  expected: green
+
+- name: 2d.shadow.gradient.transparent.1
+  desc: Shadows are not drawn for transparent gradient fills
+  # http://bugs.webkit.org/show_bug.cgi?id=15266
+  code: |
+    var gradient = ctx.createLinearGradient(0, 0, 100, 0);
+    gradient.addColorStop(0, 'rgba(0,0,0,0)');
+    gradient.addColorStop(1, 'rgba(0,0,0,0)');
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.shadowColor = '#f00';
+    ctx.shadowOffsetY = 50;
+    ctx.fillStyle = gradient;
+    ctx.fillRect(0, -50, 100, 50);
+
+    @assert pixel 50,25 == 0,255,0,255;
+  expected: green
+
+- name: 2d.shadow.gradient.transparent.2
+  desc: Shadows are not drawn for transparent parts of gradient fills
+  # http://bugs.webkit.org/show_bug.cgi?id=15266
+  code: |
+    var gradient = ctx.createLinearGradient(0, 0, 100, 0);
+    gradient.addColorStop(0, '#f00');
+    gradient.addColorStop(0.499, '#f00');
+    gradient.addColorStop(0.5, 'rgba(0,0,0,0)');
+    gradient.addColorStop(1, 'rgba(0,0,0,0)');
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 50, 50);
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(50, 0, 50, 50);
+    ctx.shadowOffsetY = 50;
+    ctx.shadowColor = '#0f0';
+    ctx.fillStyle = gradient;
+    ctx.fillRect(0, -50, 100, 50);
+
+    @assert pixel 25,25 == 0,255,0,255;
+    @assert pixel 50,25 == 0,255,0,255;
+    @assert pixel 75,25 == 0,255,0,255;
+  expected: green
+
+- name: 2d.shadow.gradient.alpha
+  desc: Shadows are drawn correctly for partially-transparent gradient fills
+  # http://bugs.webkit.org/show_bug.cgi?id=15266
+  code: |
+    var gradient = ctx.createLinearGradient(0, 0, 100, 0);
+    gradient.addColorStop(0, 'rgba(255,0,0,0.5)');
+    gradient.addColorStop(1, 'rgba(255,0,0,0.5)');
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.shadowOffsetY = 50;
+    ctx.shadowColor = '#00f';
+    ctx.fillStyle = gradient;
+    ctx.fillRect(0, -50, 100, 50);
+
+    @assert pixel 50,25 ==~ 127,0,127,255;
+  expected: |
+    size 100 50
+    cr.set_source_rgb(0.5, 0, 0.5)
+    cr.rectangle(0, 0, 100, 50)
+    cr.fill()
+
+- name: 2d.shadow.transform.1
+  desc: Shadows take account of transformations
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.shadowOffsetY = 50;
+    ctx.shadowColor = '#0f0';
+    ctx.translate(100, 100);
+    ctx.fillRect(-100, -150, 100, 50);
+
+    @assert pixel 50,25 == 0,255,0,255;
+  expected: green
+
+- name: 2d.shadow.transform.2
+  desc: Shadow offsets are not affected by transformations
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.shadowOffsetY = 50;
+    ctx.shadowColor = '#0f0';
+    ctx.rotate(Math.PI)
+    ctx.fillRect(-100, 0, 100, 50);
+
+    @assert pixel 50,25 == 0,255,0,255;
+  expected: green
+
+- name: 2d.shadow.blur.low
+  desc: Shadows look correct for small blurs
+  manual:
+  code: |
+    ctx.fillStyle = '#ff0';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.shadowColor = '#00f';
+    ctx.shadowOffsetY = 25;
+    for (var x = 0; x < 100; ++x) {
+        ctx.save();
+        ctx.beginPath();
+        ctx.rect(x, 0, 1, 50);
+        ctx.clip();
+        ctx.shadowBlur = x;
+        ctx.fillRect(-200, -200, 500, 200);
+        ctx.restore();
+    }
+  expected: |
+    size 100 50
+    import math
+    cr.set_source_rgb(0, 0, 1)
+    cr.rectangle(0, 0, 1, 25)
+    cr.fill()
+    cr.set_source_rgb(1, 1, 0)
+    cr.rectangle(0, 25, 1, 25)
+    cr.fill()
+    for x in range(1, 100):
+        sigma = x/2.0
+        filter = []
+        for i in range(-24, 26):
+            filter.append(math.exp(-i*i / (2*sigma*sigma)) / (math.sqrt(2*math.pi)*sigma))
+        accum = [0]
+        for f in filter:
+            accum.append(accum[-1] + f)
+        for y in range(0, 50):
+            cr.set_source_rgb(accum[y], accum[y], 1-accum[y])
+            cr.rectangle(x, y, 1, 1)
+            cr.fill()
+
+- name: 2d.shadow.blur.high
+  desc: Shadows look correct for large blurs
+  manual:
+  code: |
+    ctx.fillStyle = '#ff0';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.shadowColor = '#00f';
+    ctx.shadowOffsetY = 0;
+    ctx.shadowBlur = 100;
+    ctx.fillRect(-200, -200, 200, 400);
+  expected: |
+    size 100 50
+    import math
+    sigma = 100.0/2
+    filter = []
+    for i in range(-200, 100):
+        filter.append(math.exp(-i*i / (2*sigma*sigma)) / (math.sqrt(2*math.pi)*sigma))
+    accum = [0]
+    for f in filter:
+        accum.append(accum[-1] + f)
+    for x in range(0, 100):
+        cr.set_source_rgb(accum[x+200], accum[x+200], 1-accum[x+200])
+        cr.rectangle(x, 0, 1, 50)
+        cr.fill()
+
+- name: 2d.shadow.alpha.1
+  desc: Shadow color alpha components are used
+  code: |
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.shadowColor = 'rgba(255, 0, 0, 0.01)';
+    ctx.shadowOffsetY = 50;
+    ctx.fillRect(0, -50, 100, 50);
+
+    @assert pixel 50,25 ==~ 0,255,0,255 +/- 4;
+  expected: green
+
+- name: 2d.shadow.alpha.2
+  desc: Shadow color alpha components are used
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.shadowColor = 'rgba(0, 0, 255, 0.5)';
+    ctx.shadowOffsetY = 50;
+    ctx.fillRect(0, -50, 100, 50);
+
+    @assert pixel 50,25 ==~ 127,0,127,255;
+  expected: |
+    size 100 50
+    cr.set_source_rgb(0.5, 0, 0.5)
+    cr.rectangle(0, 0, 100, 50)
+    cr.fill()
+
+- name: 2d.shadow.alpha.3
+  desc: Shadows are affected by globalAlpha
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.fillStyle = '#f00'; // (work around broken Firefox globalAlpha caching)
+    ctx.shadowColor = '#00f';
+    ctx.shadowOffsetY = 50;
+    ctx.globalAlpha = 0.5;
+    ctx.fillRect(0, -50, 100, 50);
+
+    @assert pixel 50,25 ==~ 127,0,127,255;
+  expected: |
+    size 100 50
+    cr.set_source_rgb(0.5, 0, 0.5)
+    cr.rectangle(0, 0, 100, 50)
+    cr.fill()
+
+- name: 2d.shadow.alpha.4
+  desc: Shadows with alpha components are correctly affected by globalAlpha
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.fillStyle = '#f00'; // (work around broken Firefox globalAlpha caching)
+    ctx.shadowColor = 'rgba(0, 0, 255, 0.707)';
+    ctx.shadowOffsetY = 50;
+    ctx.globalAlpha = 0.707;
+    ctx.fillRect(0, -50, 100, 50);
+
+    @assert pixel 50,25 ==~ 127,0,127,255;
+  expected: |
+    size 100 50
+    cr.set_source_rgb(0.5, 0, 0.5)
+    cr.rectangle(0, 0, 100, 50)
+    cr.fill()
+
+- name: 2d.shadow.alpha.5
+  desc: Shadows of shapes with alpha components are drawn correctly
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.fillStyle = 'rgba(64, 0, 0, 0.5)';
+    ctx.shadowColor = '#00f';
+    ctx.shadowOffsetY = 50;
+    ctx.fillRect(0, -50, 100, 50);
+
+    @assert pixel 50,25 ==~ 127,0,127,255;
+  expected: |
+    size 100 50
+    cr.set_source_rgb(0.5, 0, 0.5)
+    cr.rectangle(0, 0, 100, 50)
+    cr.fill()
+
+- name: 2d.shadow.composite.1
+  desc: Shadows are drawn using globalCompositeOperation
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.globalCompositeOperation = 'xor';
+    ctx.shadowColor = '#f00';
+    ctx.shadowOffsetX = 100;
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(-100, 0, 200, 50);
+
+    @assert pixel 50,25 ==~ 0,255,0,255;
+  expected: green
+
+- name: 2d.shadow.composite.2
+  desc: Shadows are drawn using globalCompositeOperation
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.globalCompositeOperation = 'xor';
+    ctx.shadowColor = '#f00';
+    ctx.shadowBlur = 1;
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(-10, -10, 120, 70);
+
+    @assert pixel 50,25 ==~ 0,255,0,255;
+  expected: green
+
+- name: 2d.shadow.composite.3
+  desc: Areas outside shadows are drawn correctly with destination-out
+  code: |
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.globalCompositeOperation = 'destination-out';
+    ctx.shadowColor = '#f00';
+    ctx.shadowBlur = 10;
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(200, 0, 100, 50);
+
+    @assert pixel 5,5 ==~ 0,255,0,255;
+    @assert pixel 50,25 ==~ 0,255,0,255;
+  expected: green
diff --git a/testing/web-platform/tests/html/canvas/tools/yaml/element/text-styles.yaml b/testing/web-platform/tests/html/canvas/tools/yaml/element/text-styles.yaml
new file mode 100644
index 0000000000..407e346210
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/tools/yaml/element/text-styles.yaml
@@ -0,0 +1,452 @@
+- name: 2d.text.font.parse.basic
+  code: |
+    ctx.font = '20px serif';
+    @assert ctx.font === '20px serif';
+
+    ctx.font = '20PX   SERIF';
+    @assert ctx.font === '20px serif'; @moz-todo
+
+- name: 2d.text.font.parse.tiny
+  code: |
+    ctx.font = '1px sans-serif';
+    @assert ctx.font === '1px sans-serif';
+
+- name: 2d.text.font.parse.complex
+  code: |
+    ctx.font = 'small-caps italic 400 12px/2 Unknown Font, sans-serif';
+    @assert ctx.font === 'italic small-caps 12px "Unknown Font", sans-serif'; @moz-todo
+
+- name: 2d.text.font.parse.family
+  code: |
+    ctx.font = '20px cursive,fantasy,monospace,sans-serif,serif,UnquotedFont,"QuotedFont\\\\\\","';
+    @assert ctx.font === '20px cursive, fantasy, monospace, sans-serif, serif, UnquotedFont, "QuotedFont\\\\\\","';
+
+  # TODO:
+  #   2d.text.font.parse.size.absolute
+  #     xx-small x-small small medium large x-large xx-large
+  #   2d.text.font.parse.size.relative
+  #     smaller larger
+  #   2d.text.font.parse.size.length.relative
+  #     em ex px
+  #   2d.text.font.parse.size.length.absolute
+  #     in cm mm pt pc
+
+- name: 2d.text.font.parse.size.percentage
+  canvas: 'style="font-size: 144px"'
+  code: |
+    ctx.font = '50% serif';
+    @assert ctx.font === '72px serif'; @moz-todo
+    canvas.setAttribute('style', 'font-size: 100px');
+    @assert ctx.font === '72px serif'; @moz-todo
+
+- name: 2d.text.font.parse.size.percentage.default
+  code: |
+    var canvas2 = document.createElement('canvas');
+    var ctx2 = canvas2.getContext('2d');
+    ctx2.font = '1000% serif';
+    @assert ctx2.font === '100px serif'; @moz-todo
+
+- name: 2d.text.font.parse.system
+  desc: System fonts must be computed to explicit values
+  code: |
+    ctx.font = 'message-box';
+    @assert ctx.font !== 'message-box';
+
+- name: 2d.text.font.parse.invalid
+  code: |
+    ctx.font = '20px serif';
+    @assert ctx.font === '20px serif';
+
+    ctx.font = '20px serif';
+    ctx.font = '';
+    @assert ctx.font === '20px serif';
+
+    ctx.font = '20px serif';
+    ctx.font = 'bogus';
+    @assert ctx.font === '20px serif';
+
+    ctx.font = '20px serif';
+    ctx.font = 'inherit';
+    @assert ctx.font === '20px serif';
+
+    ctx.font = '20px serif';
+    ctx.font = '10px {bogus}';
+    @assert ctx.font === '20px serif';
+
+    ctx.font = '20px serif';
+    ctx.font = '10px initial';
+    @assert ctx.font === '20px serif'; @moz-todo
+
+    ctx.font = '20px serif';
+    ctx.font = '10px default';
+    @assert ctx.font === '20px serif'; @moz-todo
+
+    ctx.font = '20px serif';
+    ctx.font = '10px inherit';
+    @assert ctx.font === '20px serif';
+
+    ctx.font = '20px serif';
+    ctx.font = '10px revert';
+    @assert ctx.font === '20px serif';
+
+    ctx.font = '20px serif';
+    ctx.font = 'var(--x)';
+    @assert ctx.font === '20px serif';
+
+    ctx.font = '20px serif';
+    ctx.font = 'var(--x, 10px serif)';
+    @assert ctx.font === '20px serif';
+
+    ctx.font = '20px serif';
+    ctx.font = '1em serif; background: green; margin: 10px';
+    @assert ctx.font === '20px serif';
+
+- name: 2d.text.font.default
+  code: |
+    @assert ctx.font === '10px sans-serif';
+
+- name: 2d.text.font.relative_size
+  code: |
+    var canvas2 = document.createElement('canvas');
+    var ctx2 = canvas2.getContext('2d');
+    ctx2.font = '1em sans-serif';
+    @assert ctx2.font === '10px sans-serif';
+
+- name: 2d.text.align.valid
+  code: |
+    ctx.textAlign = 'start';
+    @assert ctx.textAlign === 'start';
+
+    ctx.textAlign = 'end';
+    @assert ctx.textAlign === 'end';
+
+    ctx.textAlign = 'left';
+    @assert ctx.textAlign === 'left';
+
+    ctx.textAlign = 'right';
+    @assert ctx.textAlign === 'right';
+
+    ctx.textAlign = 'center';
+    @assert ctx.textAlign === 'center';
+
+- name: 2d.text.align.invalid
+  code: |
+    ctx.textAlign = 'start';
+    ctx.textAlign = 'bogus';
+    @assert ctx.textAlign === 'start';
+
+    ctx.textAlign = 'start';
+    ctx.textAlign = 'END';
+    @assert ctx.textAlign === 'start';
+
+    ctx.textAlign = 'start';
+    ctx.textAlign = 'end ';
+    @assert ctx.textAlign === 'start';
+
+    ctx.textAlign = 'start';
+    ctx.textAlign = 'end\0';
+    @assert ctx.textAlign === 'start';
+
+- name: 2d.text.align.default
+  code: |
+    @assert ctx.textAlign === 'start';
+
+
+- name: 2d.text.baseline.valid
+  code: |
+    ctx.textBaseline = 'top';
+    @assert ctx.textBaseline === 'top';
+
+    ctx.textBaseline = 'hanging';
+    @assert ctx.textBaseline === 'hanging';
+
+    ctx.textBaseline = 'middle';
+    @assert ctx.textBaseline === 'middle';
+
+    ctx.textBaseline = 'alphabetic';
+    @assert ctx.textBaseline === 'alphabetic';
+
+    ctx.textBaseline = 'ideographic';
+    @assert ctx.textBaseline === 'ideographic';
+
+    ctx.textBaseline = 'bottom';
+    @assert ctx.textBaseline === 'bottom';
+
+- name: 2d.text.baseline.invalid
+  code: |
+    ctx.textBaseline = 'top';
+    ctx.textBaseline = 'bogus';
+    @assert ctx.textBaseline === 'top';
+
+    ctx.textBaseline = 'top';
+    ctx.textBaseline = 'MIDDLE';
+    @assert ctx.textBaseline === 'top';
+
+    ctx.textBaseline = 'top';
+    ctx.textBaseline = 'middle ';
+    @assert ctx.textBaseline === 'top';
+
+    ctx.textBaseline = 'top';
+    ctx.textBaseline = 'middle\0';
+    @assert ctx.textBaseline === 'top';
+
+- name: 2d.text.baseline.default
+  code: |
+    @assert ctx.textBaseline === 'alphabetic';
+
+
+
+
+
+- name: 2d.text.draw.baseline.top
+  desc: textBaseline top is the top of the em square (not the bounding box)
+  fonts:
+  - CanvasTest
+  code: |
+    ctx.font = '50px CanvasTest';
+    deferTest();
+    step_timeout(t.step_func_done(function () {
+        ctx.fillStyle = '#f00';
+        ctx.fillRect(0, 0, 100, 50);
+        ctx.fillStyle = '#0f0';
+        ctx.textBaseline = 'top';
+        ctx.fillText('CC', 0, 0);
+        @assert pixel 5,5 ==~ 0,255,0,255;
+        @assert pixel 95,5 ==~ 0,255,0,255;
+        @assert pixel 25,25 ==~ 0,255,0,255;
+        @assert pixel 75,25 ==~ 0,255,0,255;
+        @assert pixel 5,45 ==~ 0,255,0,255;
+        @assert pixel 95,45 ==~ 0,255,0,255;
+    }), 500);
+  expected: green
+
+- name: 2d.text.draw.baseline.bottom
+  desc: textBaseline bottom is the bottom of the em square (not the bounding box)
+  fonts:
+  - CanvasTest
+  code: |
+    ctx.font = '50px CanvasTest';
+    deferTest();
+    step_timeout(t.step_func_done(function () {
+        ctx.fillStyle = '#f00';
+        ctx.fillRect(0, 0, 100, 50);
+        ctx.fillStyle = '#0f0';
+        ctx.textBaseline = 'bottom';
+        ctx.fillText('CC', 0, 50);
+        @assert pixel 5,5 ==~ 0,255,0,255;
+        @assert pixel 95,5 ==~ 0,255,0,255;
+        @assert pixel 25,25 ==~ 0,255,0,255;
+        @assert pixel 75,25 ==~ 0,255,0,255;
+        @assert pixel 5,45 ==~ 0,255,0,255;
+        @assert pixel 95,45 ==~ 0,255,0,255;
+    }), 500);
+  expected: green
+
+- name: 2d.text.draw.baseline.middle
+  desc: textBaseline middle is the middle of the em square (not the bounding box)
+  fonts:
+  - CanvasTest
+  code: |
+    ctx.font = '50px CanvasTest';
+    deferTest();
+    step_timeout(t.step_func_done(function () {
+        ctx.fillStyle = '#f00';
+        ctx.fillRect(0, 0, 100, 50);
+        ctx.fillStyle = '#0f0';
+        ctx.textBaseline = 'middle';
+        ctx.fillText('CC', 0, 25);
+        @assert pixel 5,5 ==~ 0,255,0,255;
+        @assert pixel 95,5 ==~ 0,255,0,255;
+        @assert pixel 25,25 ==~ 0,255,0,255;
+        @assert pixel 75,25 ==~ 0,255,0,255;
+        @assert pixel 5,45 ==~ 0,255,0,255;
+        @assert pixel 95,45 ==~ 0,255,0,255;
+    }), 500);
+  expected: green
+
+- name: 2d.text.draw.baseline.alphabetic
+  fonts:
+  - CanvasTest
+  code: |
+    ctx.font = '50px CanvasTest';
+    deferTest();
+    step_timeout(t.step_func_done(function () {
+        ctx.fillStyle = '#f00';
+        ctx.fillRect(0, 0, 100, 50);
+        ctx.fillStyle = '#0f0';
+        ctx.textBaseline = 'alphabetic';
+        ctx.fillText('CC', 0, 37.5);
+        @assert pixel 5,5 ==~ 0,255,0,255;
+        @assert pixel 95,5 ==~ 0,255,0,255;
+        @assert pixel 25,25 ==~ 0,255,0,255;
+        @assert pixel 75,25 ==~ 0,255,0,255;
+        @assert pixel 5,45 ==~ 0,255,0,255;
+        @assert pixel 95,45 ==~ 0,255,0,255;
+    }), 500);
+  expected: green
+
+- name: 2d.text.draw.baseline.ideographic
+  fonts:
+  - CanvasTest
+  code: |
+    ctx.font = '50px CanvasTest';
+    deferTest();
+    step_timeout(t.step_func_done(function () {
+        ctx.fillStyle = '#f00';
+        ctx.fillRect(0, 0, 100, 50);
+        ctx.fillStyle = '#0f0';
+        ctx.textBaseline = 'ideographic';
+        ctx.fillText('CC', 0, 31.25);
+        @assert pixel 5,5 ==~ 0,255,0,255;
+        @assert pixel 95,5 ==~ 0,255,0,255;
+        @assert pixel 25,25 ==~ 0,255,0,255;
+        @assert pixel 75,25 ==~ 0,255,0,255;
+        @assert pixel 5,45 ==~ 0,255,0,255; @moz-todo
+        @assert pixel 95,45 ==~ 0,255,0,255; @moz-todo
+    }), 500);
+  expected: green
+
+- name: 2d.text.draw.baseline.hanging
+  fonts:
+  - CanvasTest
+  code: |
+    ctx.font = '50px CanvasTest';
+    deferTest();
+    step_timeout(t.step_func_done(function () {
+        ctx.fillStyle = '#f00';
+        ctx.fillRect(0, 0, 100, 50);
+        ctx.fillStyle = '#0f0';
+        ctx.textBaseline = 'hanging';
+        ctx.fillText('CC', 0, 12.5);
+        @assert pixel 5,5 ==~ 0,255,0,255; @moz-todo
+        @assert pixel 95,5 ==~ 0,255,0,255; @moz-todo
+        @assert pixel 25,25 ==~ 0,255,0,255;
+        @assert pixel 75,25 ==~ 0,255,0,255;
+        @assert pixel 5,45 ==~ 0,255,0,255;
+        @assert pixel 95,45 ==~ 0,255,0,255;
+    }), 500);
+  expected: green
+
+- name: 2d.text.draw.space.collapse.space
+  desc: Space characters are converted to U+0020, and collapsed (per CSS)
+  fonts:
+  - CanvasTest
+  code: |
+    ctx.font = '50px CanvasTest';
+    deferTest();
+    step_timeout(t.step_func_done(function () {
+        ctx.fillStyle = '#f00';
+        ctx.fillRect(0, 0, 100, 50);
+        ctx.fillStyle = '#0f0';
+        ctx.fillText('E  EE', -100, 37.5);
+        @assert pixel 25,25 ==~ 0,255,0,255; @moz-todo
+        @assert pixel 75,25 ==~ 0,255,0,255;
+    }), 500);
+  expected: green
+
+- name: 2d.text.draw.space.collapse.other
+  desc: Space characters are converted to U+0020, and collapsed (per CSS)
+  fonts:
+  - CanvasTest
+  code: |
+    ctx.font = '50px CanvasTest';
+    deferTest();
+    step_timeout(t.step_func_done(function () {
+        ctx.fillStyle = '#f00';
+        ctx.fillRect(0, 0, 100, 50);
+        ctx.fillStyle = '#0f0';
+        ctx.fillText('E \x09\x0a\x0c\x0d  \x09\x0a\x0c\x0dEE', -100, 37.5);
+        @assert pixel 25,25 ==~ 0,255,0,255; @moz-todo
+        @assert pixel 75,25 ==~ 0,255,0,255; @moz-todo
+    }), 500);
+  expected: green
+
+- name: 2d.text.draw.space.collapse.start
+  desc: Space characters at the start of a line are collapsed (per CSS)
+  fonts:
+  - CanvasTest
+  code: |
+    ctx.font = '50px CanvasTest';
+    deferTest();
+    step_timeout(t.step_func_done(function () {
+        ctx.fillStyle = '#f00';
+        ctx.fillRect(0, 0, 100, 50);
+        ctx.fillStyle = '#0f0';
+        ctx.fillText(' EE', 0, 37.5);
+        @assert pixel 25,25 ==~ 0,255,0,255; @moz-todo
+        @assert pixel 75,25 ==~ 0,255,0,255;
+    }), 500);
+  expected: green
+
+- name: 2d.text.draw.space.collapse.end
+  desc: Space characters at the end of a line are collapsed (per CSS)
+  fonts:
+  - CanvasTest
+  code: |
+    ctx.font = '50px CanvasTest';
+    deferTest();
+    step_timeout(t.step_func_done(function () {
+        ctx.fillStyle = '#f00';
+        ctx.fillRect(0, 0, 100, 50);
+        ctx.fillStyle = '#0f0';
+        ctx.textAlign = 'right';
+        ctx.fillText('EE ', 100, 37.5);
+        @assert pixel 25,25 ==~ 0,255,0,255;
+        @assert pixel 75,25 ==~ 0,255,0,255; @moz-todo
+    }), 500);
+  expected: green
+
+
+- name: 2d.text.measure.width.space
+  desc: Space characters are converted to U+0020 and collapsed (per CSS)
+  fonts:
+  - CanvasTest
+  code: |
+    deferTest();
+    var f = new FontFace("CanvasTest", "/fonts/CanvasTest.ttf");
+    document.fonts.add(f);
+    document.fonts.ready.then(() => {
+        step_timeout(t.step_func_done(function () {
+            ctx.font = '50px CanvasTest';
+            @assert ctx.measureText('A B').width === 150;
+            @assert ctx.measureText('A  B').width === 200;
+            @assert ctx.measureText('A \x09\x0a\x0c\x0d  \x09\x0a\x0c\x0dB').width === 150; @moz-todo
+            @assert ctx.measureText('A \x0b B').width >= 200;
+
+            @assert ctx.measureText(' AB').width === 100; @moz-todo
+            @assert ctx.measureText('AB ').width === 100; @moz-todo
+        }), 500);
+    });
+
+- name: 2d.text.measure.rtl.text
+  desc: Measurement should follow canvas direction instead text direction
+  fonts:
+  - CanvasTest
+  code: |
+    metrics = ctx.measureText('اَلْعَرَبِيَّةُ');
+    @assert metrics.actualBoundingBoxLeft < metrics.actualBoundingBoxRight;
+
+    metrics = ctx.measureText('hello');
+    @assert metrics.actualBoundingBoxLeft < metrics.actualBoundingBoxRight;
+
+- name: 2d.text.measure.boundingBox.textAlign
+  desc: Measurement should be related to textAlignment
+  code: |
+    ctx.textAlign = "right";
+    metrics = ctx.measureText('hello');
+    @assert metrics.actualBoundingBoxLeft > metrics.actualBoundingBoxRight;
+
+    ctx.textAlign = "left"
+    metrics = ctx.measureText('hello');
+    @assert metrics.actualBoundingBoxLeft < metrics.actualBoundingBoxRight;
+
+- name: 2d.text.measure.boundingBox.direction
+  desc: Measurement should follow text direction
+  code: |
+    ctx.direction = "ltr";
+    metrics = ctx.measureText('hello');
+    @assert metrics.actualBoundingBoxLeft < metrics.actualBoundingBoxRight;
+
+    ctx.direction = "rtl";
+    metrics = ctx.measureText('hello');
+    @assert metrics.actualBoundingBoxLeft > metrics.actualBoundingBoxRight;
diff --git a/testing/web-platform/tests/html/canvas/tools/yaml/element/the-canvas-element.yaml b/testing/web-platform/tests/html/canvas/tools/yaml/element/the-canvas-element.yaml
new file mode 100644
index 0000000000..d6d8cd801b
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/tools/yaml/element/the-canvas-element.yaml
@@ -0,0 +1,143 @@
+- name: 2d.getcontext.exists
+  desc: The 2D context is implemented
+  code: |
+    @assert canvas.getContext('2d') !== null;
+
+- name: 2d.getcontext.invalid.args
+  desc: Calling getContext with invalid arguments.
+  code: |
+    @assert canvas.getContext('') === null;
+    @assert canvas.getContext('2d#') === null;
+    @assert canvas.getContext('This is clearly not a valid context name.') === null;
+    @assert canvas.getContext('2d\0') === null;
+    @assert canvas.getContext('2\uFF44') === null;
+    @assert canvas.getContext('2D') === null;
+    @assert throws TypeError canvas.getContext();
+    @assert canvas.getContext('null') === null;
+    @assert canvas.getContext('undefined') === null;
+
+- name: 2d.getcontext.extraargs.create
+  desc: The 2D context doesn't throw with extra getContext arguments (new context)
+  code: |
+    @assert document.createElement("canvas").getContext('2d', false, {}, [], 1, "2") !== null;
+    @assert document.createElement("canvas").getContext('2d', 123) !== null;
+    @assert document.createElement("canvas").getContext('2d', "test") !== null;
+    @assert document.createElement("canvas").getContext('2d', undefined) !== null;
+    @assert document.createElement("canvas").getContext('2d', null) !== null;
+    @assert document.createElement("canvas").getContext('2d', Symbol.hasInstance) !== null;
+
+- name: 2d.getcontext.extraargs.cache
+  desc: The 2D context doesn't throw with extra getContext arguments (cached)
+  code: |
+    @assert canvas.getContext('2d', false, {}, [], 1, "2") !== null;
+    @assert canvas.getContext('2d', 123) !== null;
+    @assert canvas.getContext('2d', "test") !== null;
+    @assert canvas.getContext('2d', undefined) !== null;
+    @assert canvas.getContext('2d', null) !== null;
+    @assert canvas.getContext('2d', Symbol.hasInstance) !== null;
+
+- name: 2d.type.exists
+  desc: The 2D context interface is a property of 'window'
+  notes: &bindings Defined in "Web IDL" (draft)
+  code: |
+    @assert window.CanvasRenderingContext2D;
+
+- name: 2d.type.prototype
+  desc: window.CanvasRenderingContext2D.prototype are not [[Writable]] and not [[Configurable]],
+    and its methods are [[Configurable]].
+  notes: *bindings
+  code: |
+    @assert window.CanvasRenderingContext2D.prototype;
+    @assert window.CanvasRenderingContext2D.prototype.fill;
+    window.CanvasRenderingContext2D.prototype = null;
+    @assert window.CanvasRenderingContext2D.prototype;
+    delete window.CanvasRenderingContext2D.prototype;
+    @assert window.CanvasRenderingContext2D.prototype;
+    window.CanvasRenderingContext2D.prototype.fill = 1;
+    @assert window.CanvasRenderingContext2D.prototype.fill === 1;
+    delete window.CanvasRenderingContext2D.prototype.fill;
+    @assert window.CanvasRenderingContext2D.prototype.fill === undefined;
+
+- name: 2d.type.replace
+  desc: Interface methods can be overridden
+  notes: *bindings
+  code: |
+    var fillRect = window.CanvasRenderingContext2D.prototype.fillRect;
+    window.CanvasRenderingContext2D.prototype.fillRect = function (x, y, w, h)
+    {
+        this.fillStyle = '#0f0';
+        fillRect.call(this, x, y, w, h);
+    };
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+    @assert pixel 50,25 == 0,255,0,255;
+  expected: green
+
+- name: 2d.type.extend
+  desc: Interface methods can be added
+  notes: *bindings
+  code: |
+    window.CanvasRenderingContext2D.prototype.fillRectGreen = function (x, y, w, h)
+    {
+        this.fillStyle = '#0f0';
+        this.fillRect(x, y, w, h);
+    };
+    ctx.fillStyle = '#f00';
+    ctx.fillRectGreen(0, 0, 100, 50);
+    @assert pixel 50,25 == 0,255,0,255;
+  expected: green
+
+- name: 2d.getcontext.unique
+  desc: getContext('2d') returns the same object
+  code: |
+    @assert canvas.getContext('2d') === canvas.getContext('2d');
+
+- name: 2d.getcontext.shared
+  desc: getContext('2d') returns objects which share canvas state
+  code: |
+    var ctx2 = canvas.getContext('2d');
+    ctx.fillStyle = '#f00';
+    ctx2.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 100, 50);
+    @assert pixel 50,25 == 0,255,0,255;
+  expected: green
+
+- name: 2d.scaled
+  desc: CSS-scaled canvases get drawn correctly
+  size: 50, 25
+  canvas: 'style="width: 100px; height: 50px"'
+  manual:
+  code: |
+    ctx.fillStyle = '#00f';
+    ctx.fillRect(0, 0, 50, 25);
+    ctx.fillStyle = '#0ff';
+    ctx.fillRect(0, 0, 25, 10);
+  expected: |
+    size 100 50
+    cr.set_source_rgb(0, 0, 1)
+    cr.rectangle(0, 0, 100, 50)
+    cr.fill()
+    cr.set_source_rgb(0, 1, 1)
+    cr.rectangle(0, 0, 50, 20)
+    cr.fill()
+
+- name: 2d.canvas.reference
+  desc: CanvasRenderingContext2D.canvas refers back to its canvas
+  code: |
+    @assert ctx.canvas === canvas;
+
+- name: 2d.canvas.readonly
+  desc: CanvasRenderingContext2D.canvas is readonly
+  code: |
+    var c = document.createElement('canvas');
+    var d = ctx.canvas;
+    @assert c !== d;
+    ctx.canvas = c;
+    @assert ctx.canvas === d;
+
+- name: 2d.canvas.context
+  desc: checks CanvasRenderingContext2D prototype
+  code: |
+    @assert Object.getPrototypeOf(CanvasRenderingContext2D.prototype) === Object.prototype;
+    @assert Object.getPrototypeOf(ctx) === CanvasRenderingContext2D.prototype;
+    t.done();
diff --git a/testing/web-platform/tests/html/canvas/tools/yaml/element/the-canvas-state.yaml b/testing/web-platform/tests/html/canvas/tools/yaml/element/the-canvas-state.yaml
new file mode 100644
index 0000000000..0452086154
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/tools/yaml/element/the-canvas-state.yaml
@@ -0,0 +1,89 @@
+- name: 2d.state.saverestore.transformation
+  desc: save()/restore() affects the current transformation matrix
+  code: |
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.save();
+    ctx.translate(200, 0);
+    ctx.restore();
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(-200, 0, 100, 50);
+    @assert pixel 50,25 == 0,255,0,255;
+  expected: green
+
+- name: 2d.state.saverestore.clip
+  desc: save()/restore() affects the clipping path
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.save();
+    ctx.rect(0, 0, 1, 1);
+    ctx.clip();
+    ctx.restore();
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 100, 50);
+    @assert pixel 50,25 == 0,255,0,255;
+  expected: green
+
+- name: 2d.state.saverestore.path
+  desc: save()/restore() does not affect the current path
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.save();
+    ctx.rect(0, 0, 100, 50);
+    ctx.restore();
+    ctx.fillStyle = '#0f0';
+    ctx.fill();
+    @assert pixel 50,25 == 0,255,0,255;
+  expected: green
+
+- name: 2d.state.saverestore.bitmap
+  desc: save()/restore() does not affect the current bitmap
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.save();
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.restore();
+    @assert pixel 50,25 == 0,255,0,255;
+  expected: green
+
+- name: 2d.state.saverestore.stack
+  desc: save()/restore() can be nested as a stack
+  code: |
+    ctx.lineWidth = 1;
+    ctx.save();
+    ctx.lineWidth = 2;
+    ctx.save();
+    ctx.lineWidth = 3;
+    @assert ctx.lineWidth === 3;
+    ctx.restore();
+    @assert ctx.lineWidth === 2;
+    ctx.restore();
+    @assert ctx.lineWidth === 1;
+
+- name: 2d.state.saverestore.stackdepth
+  desc: save()/restore() stack depth is not unreasonably limited
+  code: |
+    var limit = 512;
+    for (var i = 1; i < limit; ++i)
+    {
+        ctx.save();
+        ctx.lineWidth = i;
+    }
+    for (var i = limit-1; i > 0; --i)
+    {
+        @assert ctx.lineWidth === i;
+        ctx.restore();
+    }
+
+- name: 2d.state.saverestore.underflow
+  desc: restore() with an empty stack has no effect
+  code: |
+    for (var i = 0; i < 16; ++i)
+        ctx.restore();
+    ctx.lineWidth = 0.5;
+    ctx.restore();
+    @assert ctx.lineWidth === 0.5;
diff --git a/testing/web-platform/tests/html/canvas/tools/yaml/offscreen/fill-and-stroke-styles.yaml b/testing/web-platform/tests/html/canvas/tools/yaml/offscreen/fill-and-stroke-styles.yaml
new file mode 100644
index 0000000000..a0eca74922
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/tools/yaml/offscreen/fill-and-stroke-styles.yaml
@@ -0,0 +1,1586 @@
+- name: 2d.fillStyle.invalidstring
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.fillStyle = '#0f0';
+    ctx.fillStyle = 'invalid';
+    ctx.fillRect(0, 0, 100, 50);
+    @assert pixel 50,25 == 0,255,0,255;
+    t.done();
+
+- name: 2d.fillStyle.invalidtype
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.fillStyle = '#0f0';
+    ctx.fillStyle = null;
+    ctx.fillRect(0, 0, 100, 50);
+    @assert pixel 50,25 == 0,255,0,255;
+    t.done();
+
+- name: 2d.fillStyle.get.solid
+  code: |
+    ctx.fillStyle = '#fa0';
+    @assert ctx.fillStyle === '#ffaa00';
+    t.done();
+
+- name: 2d.fillStyle.get.semitransparent
+  code: |
+    ctx.fillStyle = 'rgba(255,255,255,0.45)';
+    @assert ctx.fillStyle =~ /^rgba\(255, 255, 255, 0\.4\d+\)$/;
+    t.done();
+
+- name: 2d.fillStyle.get.halftransparent
+  code: |
+    ctx.fillStyle = 'rgba(255,255,255,0.5)';
+    @assert ctx.fillStyle === 'rgba(255, 255, 255, 0.5)';
+    t.done();
+
+- name: 2d.fillStyle.get.transparent
+  code: |
+    ctx.fillStyle = 'rgba(0,0,0,0)';
+    @assert ctx.fillStyle === 'rgba(0, 0, 0, 0)';
+    t.done();
+
+- name: 2d.fillStyle.default
+  code: |
+    @assert ctx.fillStyle === '#000000';
+    t.done();
+
+- name: 2d.strokeStyle.default
+  code: |
+    @assert ctx.strokeStyle === '#000000';
+    t.done();
+
+- name: 2d.fillStyle.toStringFunctionCallback
+  desc: Passing a function in to ctx.fillStyle or ctx.strokeStyle with a toString callback works as specified
+  code: |
+    ctx.fillStyle = { toString: function() { return "#008000"; } };
+    @assert ctx.fillStyle === "#008000";
+    ctx.fillStyle = {};
+    @assert ctx.fillStyle === "#008000";
+    ctx.fillStyle = 800000;
+    @assert ctx.fillStyle === "#008000";
+    @assert throws TypeError ctx.fillStyle = { toString: function() { throw new TypeError; } };
+    ctx.strokeStyle = { toString: function() { return "#008000"; } };
+    @assert ctx.strokeStyle === "#008000";
+    ctx.strokeStyle = {};
+    @assert ctx.strokeStyle === "#008000";
+    ctx.strokeStyle = 800000;
+    @assert ctx.strokeStyle === "#008000";
+    @assert throws TypeError ctx.strokeStyle = { toString: function() { throw new TypeError; } };
+    t.done();
+
+- name: 2d.gradient.interpolate.solid
+  code: |
+    var g = ctx.createLinearGradient(0, 0, 100, 0);
+    g.addColorStop(0, '#0f0');
+    g.addColorStop(1, '#0f0');
+    ctx.fillStyle = g;
+    ctx.fillRect(0, 0, 100, 50);
+    @assert pixel 50,25 == 0,255,0,255;
+    t.done();
+
+- name: 2d.gradient.interpolate.color
+  code: |
+    var g = ctx.createLinearGradient(0, 0, 100, 0);
+    g.addColorStop(0, '#ff0');
+    g.addColorStop(1, '#00f');
+    ctx.fillStyle = g;
+    ctx.fillRect(0, 0, 100, 50);
+    @assert pixel 25,25 ==~ 191,191,63,255 +/- 3;
+    @assert pixel 50,25 ==~ 127,127,127,255 +/- 3;
+    @assert pixel 75,25 ==~ 63,63,191,255 +/- 3;
+    t.done();
+
+- name: 2d.gradient.interpolate.alpha
+  code: |
+    ctx.fillStyle = '#ff0';
+    ctx.fillRect(0, 0, 100, 50);
+    var g = ctx.createLinearGradient(0, 0, 100, 0);
+    g.addColorStop(0, 'rgba(0,0,255, 0)');
+    g.addColorStop(1, 'rgba(0,0,255, 1)');
+    ctx.fillStyle = g;
+    ctx.fillRect(0, 0, 100, 50);
+    @assert pixel 25,25 ==~ 191,191,63,255 +/- 3;
+    @assert pixel 50,25 ==~ 127,127,127,255 +/- 3;
+    @assert pixel 75,25 ==~ 63,63,191,255 +/- 3;
+    t.done();
+
+- name: 2d.gradient.interpolate.coloralpha
+  code: |
+    var g = ctx.createLinearGradient(0, 0, 100, 0);
+    g.addColorStop(0, 'rgba(255,255,0, 0)');
+    g.addColorStop(1, 'rgba(0,0,255, 1)');
+    ctx.fillStyle = g;
+    ctx.fillRect(0, 0, 100, 50);
+    @assert pixel 25,25 ==~ 190,190,65,65 +/- 3;
+    @assert pixel 50,25 ==~ 126,126,128,128 +/- 3;
+    @assert pixel 75,25 ==~ 62,62,192,192 +/- 3;
+    t.done();
+
+- name: 2d.gradient.interpolate.outside
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+    var g = ctx.createLinearGradient(25, 0, 75, 0);
+    g.addColorStop(0.4, '#0f0');
+    g.addColorStop(0.6, '#0f0');
+    ctx.fillStyle = g;
+    ctx.fillRect(0, 0, 100, 50);
+    @assert pixel 20,25 ==~ 0,255,0,255;
+    @assert pixel 50,25 ==~ 0,255,0,255;
+    @assert pixel 80,25 ==~ 0,255,0,255;
+    t.done();
+
+- name: 2d.gradient.interpolate.zerosize.fill
+  code: |
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 100, 50);
+    var g = ctx.createLinearGradient(50, 25, 50, 25); // zero-length line (undefined direction)
+    g.addColorStop(0, '#f00');
+    g.addColorStop(1, '#f00');
+    ctx.fillStyle = g;
+    ctx.rect(0, 0, 100, 50);
+    ctx.fill();
+    @assert pixel 40,20 == 0,255,0,255;
+    t.done();
+
+- name: 2d.gradient.interpolate.zerosize.stroke
+  code: |
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 100, 50);
+    var g = ctx.createLinearGradient(50, 25, 50, 25); // zero-length line (undefined direction)
+    g.addColorStop(0, '#f00');
+    g.addColorStop(1, '#f00');
+    ctx.strokeStyle = g;
+    ctx.rect(20, 20, 60, 10);
+    ctx.stroke();
+    @assert pixel 19,19 == 0,255,0,255;
+    @assert pixel 20,19 == 0,255,0,255;
+    @assert pixel 21,19 == 0,255,0,255;
+    @assert pixel 19,20 == 0,255,0,255;
+    @assert pixel 20,20 == 0,255,0,255;
+    @assert pixel 21,20 == 0,255,0,255;
+    @assert pixel 19,21 == 0,255,0,255;
+    @assert pixel 20,21 == 0,255,0,255;
+    @assert pixel 21,21 == 0,255,0,255;
+    t.done();
+
+- name: 2d.gradient.interpolate.zerosize.fillRect
+  code: |
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 100, 50);
+    var g = ctx.createLinearGradient(50, 25, 50, 25); // zero-length line (undefined direction)
+    g.addColorStop(0, '#f00');
+    g.addColorStop(1, '#f00');
+    ctx.fillStyle = g;
+    ctx.fillRect(0, 0, 100, 50);
+    @assert pixel 40,20 == 0,255,0,255; @moz-todo
+    t.done();
+
+- name: 2d.gradient.interpolate.zerosize.strokeRect
+  code: |
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 100, 50);
+    var g = ctx.createLinearGradient(50, 25, 50, 25); // zero-length line (undefined direction)
+    g.addColorStop(0, '#f00');
+    g.addColorStop(1, '#f00');
+    ctx.strokeStyle = g;
+    ctx.strokeRect(20, 20, 60, 10);
+    @assert pixel 19,19 == 0,255,0,255;
+    @assert pixel 20,19 == 0,255,0,255;
+    @assert pixel 21,19 == 0,255,0,255;
+    @assert pixel 19,20 == 0,255,0,255;
+    @assert pixel 20,20 == 0,255,0,255;
+    @assert pixel 21,20 == 0,255,0,255;
+    @assert pixel 19,21 == 0,255,0,255;
+    @assert pixel 20,21 == 0,255,0,255;
+    @assert pixel 21,21 == 0,255,0,255;
+    t.done();
+
+
+- name: 2d.gradient.interpolate.vertical
+  code: |
+    var g = ctx.createLinearGradient(0, 0, 0, 50);
+    g.addColorStop(0, '#ff0');
+    g.addColorStop(1, '#00f');
+    ctx.fillStyle = g;
+    ctx.fillRect(0, 0, 100, 50);
+    @assert pixel 50,12 ==~ 191,191,63,255 +/- 10;
+    @assert pixel 50,25 ==~ 127,127,127,255 +/- 5;
+    @assert pixel 50,37 ==~ 63,63,191,255 +/- 10;
+    t.done();
+
+- name: 2d.gradient.interpolate.multiple
+  code: |
+    canvas.width = 200;
+    var g = ctx.createLinearGradient(0, 0, 200, 0);
+    g.addColorStop(0, '#ff0');
+    g.addColorStop(0.5, '#0ff');
+    g.addColorStop(1, '#f0f');
+    ctx.fillStyle = g;
+    ctx.fillRect(0, 0, 200, 50);
+    @assert pixel 50,25 ==~ 127,255,127,255 +/- 3;
+    @assert pixel 100,25 ==~ 0,255,255,255 +/- 3;
+    @assert pixel 150,25 ==~ 127,127,255,255 +/- 3;
+    t.done();
+
+- name: 2d.gradient.interpolate.overlap
+  code: |
+    canvas.width = 200;
+    var g = ctx.createLinearGradient(0, 0, 200, 0);
+    g.addColorStop(0, '#f00');
+    g.addColorStop(0, '#ff0');
+    g.addColorStop(0.25, '#00f');
+    g.addColorStop(0.25, '#0f0');
+    g.addColorStop(0.25, '#0f0');
+    g.addColorStop(0.25, '#0f0');
+    g.addColorStop(0.25, '#ff0');
+    g.addColorStop(0.5, '#00f');
+    g.addColorStop(0.5, '#0f0');
+    g.addColorStop(0.75, '#00f');
+    g.addColorStop(0.75, '#f00');
+    g.addColorStop(0.75, '#ff0');
+    g.addColorStop(0.5, '#0f0');
+    g.addColorStop(0.5, '#0f0');
+    g.addColorStop(0.5, '#ff0');
+    g.addColorStop(1, '#00f');
+    ctx.fillStyle = g;
+    ctx.fillRect(0, 0, 200, 50);
+    @assert pixel 49,25 ==~ 0,0,255,255 +/- 16;
+    @assert pixel 51,25 ==~ 255,255,0,255 +/- 16;
+    @assert pixel 99,25 ==~ 0,0,255,255 +/- 16;
+    @assert pixel 101,25 ==~ 255,255,0,255 +/- 16;
+    @assert pixel 149,25 ==~ 0,0,255,255 +/- 16;
+    @assert pixel 151,25 ==~ 255,255,0,255 +/- 16;
+    t.done();
+
+- name: 2d.gradient.interpolate.overlap2
+  code: |
+    var g = ctx.createLinearGradient(0, 0, 100, 0);
+    var ps = [ 0, 1/10, 1/4, 1/3, 1/2, 3/4, 1 ];
+    for (var p = 0; p < ps.length; ++p)
+    {
+            g.addColorStop(ps[p], '#0f0');
+            for (var i = 0; i < 15; ++i)
+                    g.addColorStop(ps[p], '#f00');
+            g.addColorStop(ps[p], '#0f0');
+    }
+    ctx.fillStyle = g;
+    ctx.fillRect(0, 0, 100, 50);
+    @assert pixel 1,25 == 0,255,0,255;
+    @assert pixel 30,25 == 0,255,0,255;
+    @assert pixel 40,25 == 0,255,0,255;
+    @assert pixel 60,25 == 0,255,0,255;
+    @assert pixel 80,25 == 0,255,0,255;
+    t.done();
+
+- name: 2d.gradient.empty
+  code: |
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 100, 50);
+    var g = ctx.createLinearGradient(0, 0, 0, 50);
+    ctx.fillStyle = g;
+    ctx.fillRect(0, 0, 100, 50);
+    @assert pixel 50,25 ==~ 0,255,0,255;
+    t.done();
+
+- name: 2d.gradient.object.update
+  code: |
+    var g = ctx.createLinearGradient(-100, 0, 200, 0);
+    g.addColorStop(0, '#f00');
+    g.addColorStop(1, '#f00');
+    ctx.fillStyle = g;
+    ctx.fillRect(0, 0, 100, 50);
+    g.addColorStop(0.1, '#0f0');
+    g.addColorStop(0.9, '#0f0');
+    ctx.fillRect(0, 0, 100, 50);
+    @assert pixel 50,25 ==~ 0,255,0,255;
+    t.done();
+
+- name: 2d.gradient.object.compare
+  code: |
+    var g1 = ctx.createLinearGradient(0, 0, 100, 0);
+    var g2 = ctx.createLinearGradient(0, 0, 100, 0);
+    @assert g1 !== g2;
+    ctx.fillStyle = g1;
+    @assert ctx.fillStyle === g1;
+    t.done();
+
+- name: 2d.gradient.object.crosscanvas
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+    var offscreenCanvas2 = new OffscreenCanvas(100, 50);
+    var g = offscreenCanvas2.getContext('2d').createLinearGradient(0, 0, 100, 0);
+    g.addColorStop(0, '#0f0');
+    g.addColorStop(1, '#0f0');
+    ctx.fillStyle = g;
+    ctx.fillRect(0, 0, 100, 50);
+    @assert pixel 50,25 ==~ 0,255,0,255;
+    t.done();
+
+- name: 2d.gradient.object.invalidoffset
+  code: |
+    var g = ctx.createLinearGradient(0, 0, 100, 0);
+    @assert throws INDEX_SIZE_ERR g.addColorStop(-1, '#000');
+    @assert throws INDEX_SIZE_ERR g.addColorStop(2, '#000');
+    @assert throws TypeError g.addColorStop(Infinity, '#000');
+    @assert throws TypeError g.addColorStop(-Infinity, '#000');
+    @assert throws TypeError g.addColorStop(NaN, '#000');
+    t.done();
+
+- name: 2d.gradient.object.invalidcolor
+  code: |
+    var g = ctx.createLinearGradient(0, 0, 100, 0);
+    @assert throws SYNTAX_ERR g.addColorStop(0, "");
+    @assert throws SYNTAX_ERR g.addColorStop(0, 'null');
+    @assert throws SYNTAX_ERR g.addColorStop(0, 'undefined');
+    @assert throws SYNTAX_ERR g.addColorStop(0, null);
+    @assert throws SYNTAX_ERR g.addColorStop(0, undefined);
+    t.done();
+
+- name: 2d.gradient.linear.nonfinite
+  desc: createLinearGradient() throws TypeError if arguments are not finite
+  code: |
+    @nonfinite @assert throws TypeError ctx.createLinearGradient(<0 Infinity -Infinity NaN>, <0 Infinity -Infinity NaN>, <1 Infinity -Infinity NaN>, <0 Infinity -Infinity NaN>);
+    t.done();
+
+- name: 2d.gradient.linear.transform.1
+  desc: Linear gradient coordinates are relative to the coordinate space at the time
+    of filling
+  code: |
+    var g = ctx.createLinearGradient(0, 0, 200, 0);
+    g.addColorStop(0, '#f00');
+    g.addColorStop(0.25, '#0f0');
+    g.addColorStop(0.75, '#0f0');
+    g.addColorStop(1, '#f00');
+    ctx.fillStyle = g;
+    ctx.translate(-50, 0);
+    ctx.fillRect(50, 0, 100, 50);
+    @assert pixel 25,25 == 0,255,0,255;
+    @assert pixel 50,25 == 0,255,0,255;
+    @assert pixel 75,25 == 0,255,0,255;
+    t.done();
+
+- name: 2d.gradient.linear.transform.2
+  desc: Linear gradient coordinates are relative to the coordinate space at the time
+    of filling
+  code: |
+    ctx.translate(100, 0);
+    var g = ctx.createLinearGradient(0, 0, 200, 0);
+    g.addColorStop(0, '#f00');
+    g.addColorStop(0.25, '#0f0');
+    g.addColorStop(0.75, '#0f0');
+    g.addColorStop(1, '#f00');
+    ctx.fillStyle = g;
+    ctx.translate(-150, 0);
+    ctx.fillRect(50, 0, 100, 50);
+    @assert pixel 25,25 == 0,255,0,255;
+    @assert pixel 50,25 == 0,255,0,255;
+    @assert pixel 75,25 == 0,255,0,255;
+    t.done();
+
+- name: 2d.gradient.linear.transform.3
+  desc: Linear gradient transforms do not experience broken caching effects
+  code: |
+    var g = ctx.createLinearGradient(0, 0, 200, 0);
+    g.addColorStop(0, '#f00');
+    g.addColorStop(0.25, '#0f0');
+    g.addColorStop(0.75, '#0f0');
+    g.addColorStop(1, '#f00');
+    ctx.fillStyle = g;
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.translate(-50, 0);
+    ctx.fillRect(50, 0, 100, 50);
+    @assert pixel 25,25 == 0,255,0,255;
+    @assert pixel 50,25 == 0,255,0,255;
+    @assert pixel 75,25 == 0,255,0,255;
+    t.done();
+
+- name: 2d.gradient.radial.negative
+  desc: createRadialGradient() throws INDEX_SIZE_ERR if either radius is negative
+  code: |
+    @assert throws INDEX_SIZE_ERR ctx.createRadialGradient(0, 0, -0.1, 0, 0, 1);
+    @assert throws INDEX_SIZE_ERR ctx.createRadialGradient(0, 0, 1, 0, 0, -0.1);
+    @assert throws INDEX_SIZE_ERR ctx.createRadialGradient(0, 0, -0.1, 0, 0, -0.1);
+    t.done();
+- name: 2d.gradient.radial.nonfinite
+
+  desc: createRadialGradient() throws TypeError if arguments are not finite
+  code: |
+    @nonfinite @assert throws TypeError ctx.createRadialGradient(<0 Infinity -Infinity NaN>, <0 Infinity -Infinity NaN>, <1 Infinity -Infinity NaN>, <0 Infinity -Infinity NaN>, <0 Infinity -Infinity NaN>, <1 Infinity -Infinity NaN>);
+    t.done();
+
+- name: 2d.gradient.radial.inside1
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+    var g = ctx.createRadialGradient(50, 25, 100, 50, 25, 200);
+    g.addColorStop(0, '#0f0');
+    g.addColorStop(1, '#f00');
+    ctx.fillStyle = g;
+    ctx.fillRect(0, 0, 100, 50);
+    @assert pixel 1,1 == 0,255,0,255;
+    @assert pixel 50,1 == 0,255,0,255;
+    @assert pixel 98,1 == 0,255,0,255;
+    @assert pixel 1,25 == 0,255,0,255;
+    @assert pixel 50,25 == 0,255,0,255;
+    @assert pixel 98,25 == 0,255,0,255;
+    @assert pixel 1,48 == 0,255,0,255;
+    @assert pixel 50,48 == 0,255,0,255;
+    @assert pixel 98,48 == 0,255,0,255;
+    t.done();
+
+- name: 2d.gradient.radial.inside2
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+    var g = ctx.createRadialGradient(50, 25, 200, 50, 25, 100);
+    g.addColorStop(0, '#f00');
+    g.addColorStop(1, '#0f0');
+    ctx.fillStyle = g;
+    ctx.fillRect(0, 0, 100, 50);
+    @assert pixel 1,1 == 0,255,0,255;
+    @assert pixel 50,1 == 0,255,0,255;
+    @assert pixel 98,1 == 0,255,0,255;
+    @assert pixel 1,25 == 0,255,0,255;
+    @assert pixel 50,25 == 0,255,0,255;
+    @assert pixel 98,25 == 0,255,0,255;
+    @assert pixel 1,48 == 0,255,0,255;
+    @assert pixel 50,48 == 0,255,0,255;
+    @assert pixel 98,48 == 0,255,0,255;
+    t.done();
+
+- name: 2d.gradient.radial.inside3
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+    var g = ctx.createRadialGradient(50, 25, 200, 50, 25, 100);
+    g.addColorStop(0, '#f00');
+    g.addColorStop(0.993, '#f00');
+    g.addColorStop(1, '#0f0');
+    ctx.fillStyle = g;
+    ctx.fillRect(0, 0, 100, 50);
+    @assert pixel 1,1 == 0,255,0,255;
+    @assert pixel 50,1 == 0,255,0,255;
+    @assert pixel 98,1 == 0,255,0,255;
+    @assert pixel 1,25 == 0,255,0,255;
+    @assert pixel 50,25 == 0,255,0,255;
+    @assert pixel 98,25 == 0,255,0,255;
+    @assert pixel 1,48 == 0,255,0,255;
+    @assert pixel 50,48 == 0,255,0,255;
+    @assert pixel 98,48 == 0,255,0,255;
+    t.done();
+
+- name: 2d.gradient.radial.outside1
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+    var g = ctx.createRadialGradient(200, 25, 10, 200, 25, 20);
+    g.addColorStop(0, '#f00');
+    g.addColorStop(1, '#0f0');
+    ctx.fillStyle = g;
+    ctx.fillRect(0, 0, 100, 50);
+    @assert pixel 1,1 == 0,255,0,255;
+    @assert pixel 50,1 == 0,255,0,255;
+    @assert pixel 98,1 == 0,255,0,255;
+    @assert pixel 1,25 == 0,255,0,255;
+    @assert pixel 50,25 == 0,255,0,255;
+    @assert pixel 98,25 == 0,255,0,255;
+    @assert pixel 1,48 == 0,255,0,255;
+    @assert pixel 50,48 == 0,255,0,255;
+    @assert pixel 98,48 == 0,255,0,255;
+    t.done();
+
+- name: 2d.gradient.radial.outside2
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+    var g = ctx.createRadialGradient(200, 25, 20, 200, 25, 10);
+    g.addColorStop(0, '#0f0');
+    g.addColorStop(1, '#f00');
+    ctx.fillStyle = g;
+    ctx.fillRect(0, 0, 100, 50);
+    @assert pixel 1,1 == 0,255,0,255;
+    @assert pixel 50,1 == 0,255,0,255;
+    @assert pixel 98,1 == 0,255,0,255;
+    @assert pixel 1,25 == 0,255,0,255;
+    @assert pixel 50,25 == 0,255,0,255;
+    @assert pixel 98,25 == 0,255,0,255;
+    @assert pixel 1,48 == 0,255,0,255;
+    @assert pixel 50,48 == 0,255,0,255;
+    @assert pixel 98,48 == 0,255,0,255;
+    t.done();
+
+- name: 2d.gradient.radial.outside3
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+    var g = ctx.createRadialGradient(200, 25, 20, 200, 25, 10);
+    g.addColorStop(0, '#0f0');
+    g.addColorStop(0.001, '#f00');
+    g.addColorStop(1, '#f00');
+    ctx.fillStyle = g;
+    ctx.fillRect(0, 0, 100, 50);
+    @assert pixel 1,1 == 0,255,0,255;
+    @assert pixel 50,1 == 0,255,0,255;
+    @assert pixel 98,1 == 0,255,0,255;
+    @assert pixel 1,25 == 0,255,0,255;
+    @assert pixel 50,25 == 0,255,0,255;
+    @assert pixel 98,25 == 0,255,0,255;
+    @assert pixel 1,48 == 0,255,0,255;
+    @assert pixel 50,48 == 0,255,0,255;
+    @assert pixel 98,48 == 0,255,0,255;
+    t.done();
+
+- name: 2d.gradient.radial.touch1
+  code: |
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 100, 50);
+    var g = ctx.createRadialGradient(150, 25, 50, 200, 25, 100);
+    g.addColorStop(0, '#f00');
+    g.addColorStop(1, '#f00');
+    ctx.fillStyle = g;
+    ctx.fillRect(0, 0, 100, 50);
+    @assert pixel 1,1 == 0,255,0,255; @moz-todo
+    @assert pixel 50,1 == 0,255,0,255; @moz-todo
+    @assert pixel 98,1 == 0,255,0,255; @moz-todo
+    @assert pixel 1,25 == 0,255,0,255; @moz-todo
+    @assert pixel 50,25 == 0,255,0,255; @moz-todo
+    @assert pixel 98,25 == 0,255,0,255; @moz-todo
+    @assert pixel 1,48 == 0,255,0,255; @moz-todo
+    @assert pixel 50,48 == 0,255,0,255; @moz-todo
+    @assert pixel 98,48 == 0,255,0,255; @moz-todo
+    t.done();
+
+- name: 2d.gradient.radial.touch2
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+    var g = ctx.createRadialGradient(-80, 25, 70, 0, 25, 150);
+    g.addColorStop(0, '#f00');
+    g.addColorStop(0.01, '#0f0');
+    g.addColorStop(0.99, '#0f0');
+    g.addColorStop(1, '#f00');
+    ctx.fillStyle = g;
+    ctx.fillRect(0, 0, 100, 50);
+    @assert pixel 1,1 == 0,255,0,255;
+    @assert pixel 50,1 == 0,255,0,255;
+    @assert pixel 98,1 == 0,255,0,255;
+    @assert pixel 1,25 == 0,255,0,255;
+    @assert pixel 50,25 == 0,255,0,255;
+    @assert pixel 98,25 == 0,255,0,255;
+    @assert pixel 1,48 == 0,255,0,255;
+    @assert pixel 50,48 == 0,255,0,255;
+    @assert pixel 98,48 == 0,255,0,255;
+    t.done();
+
+- name: 2d.gradient.radial.touch3
+  code: |
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 100, 50);
+    var g = ctx.createRadialGradient(120, -15, 25, 140, -30, 50);
+    g.addColorStop(0, '#f00');
+    g.addColorStop(1, '#f00');
+    ctx.fillStyle = g;
+    ctx.fillRect(0, 0, 100, 50);
+    @assert pixel 1,1 == 0,255,0,255; @moz-todo
+    @assert pixel 50,1 == 0,255,0,255; @moz-todo
+    @assert pixel 98,1 == 0,255,0,255; @moz-todo
+    @assert pixel 1,25 == 0,255,0,255; @moz-todo
+    @assert pixel 50,25 == 0,255,0,255; @moz-todo
+    @assert pixel 98,25 == 0,255,0,255; @moz-todo
+    @assert pixel 1,48 == 0,255,0,255; @moz-todo
+    @assert pixel 50,48 == 0,255,0,255; @moz-todo
+    @assert pixel 98,48 == 0,255,0,255; @moz-todo
+    t.done();
+
+- name: 2d.gradient.radial.equal
+  code: |
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 100, 50);
+    var g = ctx.createRadialGradient(50, 25, 20, 50, 25, 20);
+    g.addColorStop(0, '#f00');
+    g.addColorStop(1, '#f00');
+    ctx.fillStyle = g;
+    ctx.fillRect(0, 0, 100, 50);
+    @assert pixel 1,1 == 0,255,0,255; @moz-todo
+    @assert pixel 50,1 == 0,255,0,255; @moz-todo
+    @assert pixel 98,1 == 0,255,0,255; @moz-todo
+    @assert pixel 1,25 == 0,255,0,255; @moz-todo
+    @assert pixel 50,25 == 0,255,0,255; @moz-todo
+    @assert pixel 98,25 == 0,255,0,255; @moz-todo
+    @assert pixel 1,48 == 0,255,0,255; @moz-todo
+    @assert pixel 50,48 == 0,255,0,255; @moz-todo
+    @assert pixel 98,48 == 0,255,0,255; @moz-todo
+    t.done();
+
+- name: 2d.gradient.radial.cone.behind
+  code: |
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 100, 50);
+    var g = ctx.createRadialGradient(120, 25, 10, 211, 25, 100);
+    g.addColorStop(0, '#f00');
+    g.addColorStop(1, '#f00');
+    ctx.fillStyle = g;
+    ctx.fillRect(0, 0, 100, 50);
+    @assert pixel 1,1 == 0,255,0,255; @moz-todo
+    @assert pixel 50,1 == 0,255,0,255; @moz-todo
+    @assert pixel 98,1 == 0,255,0,255; @moz-todo
+    @assert pixel 1,25 == 0,255,0,255; @moz-todo
+    @assert pixel 50,25 == 0,255,0,255; @moz-todo
+    @assert pixel 98,25 == 0,255,0,255; @moz-todo
+    @assert pixel 1,48 == 0,255,0,255; @moz-todo
+    @assert pixel 50,48 == 0,255,0,255; @moz-todo
+    @assert pixel 98,48 == 0,255,0,255; @moz-todo
+    t.done();
+
+- name: 2d.gradient.radial.cone.front
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+    var g = ctx.createRadialGradient(311, 25, 10, 210, 25, 100);
+    g.addColorStop(0, '#f00');
+    g.addColorStop(1, '#0f0');
+    ctx.fillStyle = g;
+    ctx.fillRect(0, 0, 100, 50);
+    @assert pixel 1,1 == 0,255,0,255;
+    @assert pixel 50,1 == 0,255,0,255;
+    @assert pixel 98,1 == 0,255,0,255;
+    @assert pixel 1,25 == 0,255,0,255;
+    @assert pixel 50,25 == 0,255,0,255;
+    @assert pixel 98,25 == 0,255,0,255;
+    @assert pixel 1,48 == 0,255,0,255;
+    @assert pixel 50,48 == 0,255,0,255;
+    @assert pixel 98,48 == 0,255,0,255;
+    t.done();
+
+- name: 2d.gradient.radial.cone.bottom
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+    var g = ctx.createRadialGradient(210, 25, 100, 230, 25, 101);
+    g.addColorStop(0, '#0f0');
+    g.addColorStop(1, '#f00');
+    ctx.fillStyle = g;
+    ctx.fillRect(0, 0, 100, 50);
+    @assert pixel 1,1 == 0,255,0,255;
+    @assert pixel 50,1 == 0,255,0,255;
+    @assert pixel 98,1 == 0,255,0,255;
+    @assert pixel 1,25 == 0,255,0,255;
+    @assert pixel 50,25 == 0,255,0,255;
+    @assert pixel 98,25 == 0,255,0,255;
+    @assert pixel 1,48 == 0,255,0,255;
+    @assert pixel 50,48 == 0,255,0,255;
+    @assert pixel 98,48 == 0,255,0,255;
+    t.done();
+
+- name: 2d.gradient.radial.cone.top
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+    var g = ctx.createRadialGradient(230, 25, 100, 100, 25, 101);
+    g.addColorStop(0, '#f00');
+    g.addColorStop(1, '#0f0');
+    ctx.fillStyle = g;
+    ctx.fillRect(0, 0, 100, 50);
+    @assert pixel 1,1 == 0,255,0,255;
+    @assert pixel 50,1 == 0,255,0,255;
+    @assert pixel 98,1 == 0,255,0,255;
+    @assert pixel 1,25 == 0,255,0,255;
+    @assert pixel 50,25 == 0,255,0,255;
+    @assert pixel 98,25 == 0,255,0,255;
+    @assert pixel 1,48 == 0,255,0,255;
+    @assert pixel 50,48 == 0,255,0,255;
+    @assert pixel 98,48 == 0,255,0,255;
+    t.done();
+
+- name: 2d.gradient.radial.cone.beside
+  code: |
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 100, 50);
+    var g = ctx.createRadialGradient(0, 100, 40, 100, 100, 50);
+    g.addColorStop(0, '#f00');
+    g.addColorStop(1, '#f00');
+    ctx.fillStyle = g;
+    ctx.fillRect(0, 0, 100, 50);
+    @assert pixel 1,1 == 0,255,0,255; @moz-todo
+    @assert pixel 50,1 == 0,255,0,255; @moz-todo
+    @assert pixel 98,1 == 0,255,0,255; @moz-todo
+    @assert pixel 1,25 == 0,255,0,255; @moz-todo
+    @assert pixel 50,25 == 0,255,0,255; @moz-todo
+    @assert pixel 98,25 == 0,255,0,255; @moz-todo
+    @assert pixel 1,48 == 0,255,0,255; @moz-todo
+    @assert pixel 50,48 == 0,255,0,255; @moz-todo
+    @assert pixel 98,48 == 0,255,0,255; @moz-todo
+    t.done();
+
+- name: 2d.gradient.radial.cone.cylinder
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+    var g = ctx.createRadialGradient(210, 25, 100, 230, 25, 100);
+    g.addColorStop(0, '#0f0');
+    g.addColorStop(1, '#f00');
+    ctx.fillStyle = g;
+    ctx.fillRect(0, 0, 100, 50);
+    @assert pixel 1,1 == 0,255,0,255;
+    @assert pixel 50,1 == 0,255,0,255;
+    @assert pixel 98,1 == 0,255,0,255;
+    @assert pixel 1,25 == 0,255,0,255;
+    @assert pixel 50,25 == 0,255,0,255;
+    @assert pixel 98,25 == 0,255,0,255;
+    @assert pixel 1,48 == 0,255,0,255;
+    @assert pixel 50,48 == 0,255,0,255;
+    @assert pixel 98,48 == 0,255,0,255;
+    t.done();
+
+- name: 2d.gradient.radial.cone.shape1
+  code: |
+    var tol = 1; // tolerance to avoid antialiasing artifacts
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.fillStyle = '#f00';
+    ctx.beginPath();
+    ctx.moveTo(30+tol, 40);
+    ctx.lineTo(110, -20+tol);
+    ctx.lineTo(110, 100-tol);
+    ctx.fill();
+    var g = ctx.createRadialGradient(30+10*5/2, 40, 10*3/2, 30+10*15/4, 40, 10*9/4);
+    g.addColorStop(0, '#0f0');
+    g.addColorStop(1, '#0f0');
+    ctx.fillStyle = g;
+    ctx.fillRect(0, 0, 100, 50);
+    @assert pixel 1,1 == 0,255,0,255;
+    @assert pixel 50,1 == 0,255,0,255;
+    @assert pixel 98,1 == 0,255,0,255;
+    @assert pixel 1,25 == 0,255,0,255;
+    @assert pixel 50,25 == 0,255,0,255;
+    @assert pixel 98,25 == 0,255,0,255;
+    @assert pixel 1,48 == 0,255,0,255;
+    @assert pixel 50,48 == 0,255,0,255;
+    @assert pixel 98,48 == 0,255,0,255;
+    t.done();
+
+- name: 2d.gradient.radial.cone.shape2
+  code: |
+    var tol = 1; // tolerance to avoid antialiasing artifacts
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 100, 50);
+    var g = ctx.createRadialGradient(30+10*5/2, 40, 10*3/2, 30+10*15/4, 40, 10*9/4);
+    g.addColorStop(0, '#f00');
+    g.addColorStop(1, '#f00');
+    ctx.fillStyle = g;
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.fillStyle = '#0f0';
+    ctx.beginPath();
+    ctx.moveTo(30-tol, 40);
+    ctx.lineTo(110, -20-tol);
+    ctx.lineTo(110, 100+tol);
+    ctx.fill();
+    @assert pixel 1,1 == 0,255,0,255; @moz-todo
+    @assert pixel 50,1 == 0,255,0,255; @moz-todo
+    @assert pixel 98,1 == 0,255,0,255;
+    @assert pixel 1,25 == 0,255,0,255; @moz-todo
+    @assert pixel 50,25 == 0,255,0,255;
+    @assert pixel 98,25 == 0,255,0,255;
+    @assert pixel 1,48 == 0,255,0,255; @moz-todo
+    @assert pixel 50,48 == 0,255,0,255;
+    @assert pixel 98,48 == 0,255,0,255;
+    t.done();
+
+- name: 2d.gradient.radial.transform.1
+  desc: Radial gradient coordinates are relative to the coordinate space at the time
+    of filling
+  code: |
+    var g = ctx.createRadialGradient(0, 0, 0, 0, 0, 11.2);
+    g.addColorStop(0, '#0f0');
+    g.addColorStop(0.5, '#0f0');
+    g.addColorStop(0.51, '#f00');
+    g.addColorStop(1, '#f00');
+    ctx.fillStyle = g;
+    ctx.translate(50, 25);
+    ctx.scale(10, 10);
+    ctx.fillRect(-5, -2.5, 10, 5);
+    @assert pixel 25,25 == 0,255,0,255;
+    @assert pixel 50,25 == 0,255,0,255;
+    @assert pixel 75,25 == 0,255,0,255;
+    t.done();
+
+- name: 2d.gradient.radial.transform.2
+  desc: Radial gradient coordinates are relative to the coordinate space at the time
+    of filling
+  code: |
+    ctx.translate(100, 0);
+    var g = ctx.createRadialGradient(0, 0, 0, 0, 0, 11.2);
+    g.addColorStop(0, '#0f0');
+    g.addColorStop(0.5, '#0f0');
+    g.addColorStop(0.51, '#f00');
+    g.addColorStop(1, '#f00');
+    ctx.fillStyle = g;
+    ctx.translate(-50, 25);
+    ctx.scale(10, 10);
+    ctx.fillRect(-5, -2.5, 10, 5);
+    @assert pixel 25,25 == 0,255,0,255;
+    @assert pixel 50,25 == 0,255,0,255;
+    @assert pixel 75,25 == 0,255,0,255;
+    t.done();
+
+- name: 2d.gradient.radial.transform.3
+  desc: Radial gradient transforms do not experience broken caching effects
+  code: |
+    var g = ctx.createRadialGradient(0, 0, 0, 0, 0, 11.2);
+    g.addColorStop(0, '#0f0');
+    g.addColorStop(0.5, '#0f0');
+    g.addColorStop(0.51, '#f00');
+    g.addColorStop(1, '#f00');
+    ctx.fillStyle = g;
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.translate(50, 25);
+    ctx.scale(10, 10);
+    ctx.fillRect(-5, -2.5, 10, 5);
+    @assert pixel 25,25 == 0,255,0,255;
+    @assert pixel 50,25 == 0,255,0,255;
+    @assert pixel 75,25 == 0,255,0,255;
+    t.done();
+
+- name: 2d.gradient.conic.positive.rotation
+  desc: Conic gradient with positive rotation
+  code: |
+    const g = ctx.createConicGradient(3*Math.PI/2, 50, 25);
+    // It's red in the upper right region and green on the lower left region
+    g.addColorStop(0, "#f00");
+    g.addColorStop(0.25, "#0f0");
+    g.addColorStop(0.50, "#0f0");
+    g.addColorStop(0.75, "#f00");
+    ctx.fillStyle = g;
+    ctx.fillRect(0, 0, 100, 50);
+    @assert pixel 25,15 ==~ 255,0,0,255 +/- 3;
+    @assert pixel 75,40 ==~ 0,255,0,255 +/- 3;
+    t.done();
+
+- name: 2d.gradient.conic.negative.rotation
+  desc: Conic gradient with negative rotation
+  code: |
+    const g = ctx.createConicGradient(-Math.PI/2, 50, 25);
+    // It's red in the upper right region and green on the lower left region
+    g.addColorStop(0, "#f00");
+    g.addColorStop(0.25, "#0f0");
+    g.addColorStop(0.50, "#0f0");
+    g.addColorStop(0.75, "#f00");
+    ctx.fillStyle = g;
+    ctx.fillRect(0, 0, 100, 50);
+    @assert pixel 25,15 ==~ 255,0,0,255 +/- 3;
+    @assert pixel 75,40 ==~ 0,255,0,255 +/- 3;
+    t.done();
+
+- name: 2d.gradient.conic.invalid.inputs
+  desc: Conic gradient function with invalid inputs
+  code: |
+    @nonfinite @assert throws TypeError ctx.createConicGradient(<0 Infinity -Infinity NaN>, <0 Infinity -Infinity NaN>, <1 Infinity -Infinity NaN>);
+
+    const g = ctx.createConicGradient(0, 0, 25);
+    @nonfinite @assert throws TypeError g.addColorStop(, <'#f00'>);
+    @nonfinite @assert throws SYNTAX_ERR g.addColorStop(<0>, );
+    t.done();
+
+- name: 2d.pattern.basic.image
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+    var promise = new Promise(function(resolve, reject) {
+        var xhr = new XMLHttpRequest();
+        xhr.open("GET", '/images/green.png');
+        xhr.responseType = 'blob';
+        xhr.send();
+        xhr.onload = function() {
+            resolve(xhr.response);
+        };
+    });
+    promise.then(function(response) {
+        createImageBitmap(response).then(bitmap => {
+            var pattern = ctx.createPattern(bitmap, 'no-repeat');
+            ctx.fillStyle = pattern;
+            ctx.fillRect(0, 0, 100, 50);
+            @assert pixel 1,1 == 0,255,0,255;
+            @assert pixel 98,1 == 0,255,0,255;
+            @assert pixel 1,48 == 0,255,0,255;
+            @assert pixel 98,48 == 0,255,0,255;
+        }, t_fail);
+    }).then(t_pass, t_fail);
+
+- name: 2d.pattern.basic.canvas
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+    var offscreenCanvas2 = new OffscreenCanvas(100, 50);
+    var ctx2 = offscreenCanvas2.getContext('2d');
+    ctx2.fillStyle = '#0f0';
+    ctx2.fillRect(0, 0, 100, 50);
+    var pattern = ctx.createPattern(offscreenCanvas2, 'no-repeat');
+    ctx.fillStyle = pattern;
+    ctx.fillRect(0, 0, 100, 50);
+    @assert pixel 1,1 == 0,255,0,255;
+    @assert pixel 50,1 == 0,255,0,255;
+    @assert pixel 98,1 == 0,255,0,255;
+    @assert pixel 1,25 == 0,255,0,255;
+    @assert pixel 50,25 == 0,255,0,255;
+    @assert pixel 98,25 == 0,255,0,255;
+    @assert pixel 1,48 == 0,255,0,255;
+    @assert pixel 50,48 == 0,255,0,255;
+    @assert pixel 98,48 == 0,255,0,255;
+    t.done();
+
+- name: 2d.pattern.basic.zerocanvas
+  code: |
+    canvas.width = 0;
+    canvas.height = 10;
+    @assert canvas.width === 0;
+    @assert canvas.height === 10;
+    @assert throws INVALID_STATE_ERR ctx.createPattern(canvas, 'repeat');
+    canvas.width = 10;
+    canvas.height = 0;
+    @assert canvas.width === 10;
+    @assert canvas.height === 0;
+    @assert throws INVALID_STATE_ERR ctx.createPattern(canvas, 'repeat');
+    canvas.width = 0;
+    canvas.height = 0;
+    @assert canvas.width === 0;
+    @assert canvas.height === 0;
+    @assert throws INVALID_STATE_ERR ctx.createPattern(canvas, 'repeat');
+    t.done();
+
+- name: 2d.pattern.basic.nocontext
+  code: |
+    var offscreenCanvas2 = new OffscreenCanvas(100, 50);
+    var pattern = ctx.createPattern(offscreenCanvas2, 'no-repeat');
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.fillStyle = '#f00';
+    ctx.fillStyle = pattern;
+    ctx.fillRect(0, 0, 100, 50);
+    @assert pixel 1,1 == 0,255,0,255;
+    @assert pixel 98,1 == 0,255,0,255;
+    @assert pixel 1,48 == 0,255,0,255;
+    @assert pixel 98,48 == 0,255,0,255;
+    t.done();
+
+- name: 2d.pattern.image.undefined
+  code: |
+    @assert throws TypeError ctx.createPattern(undefined, 'repeat');
+    t.done();
+
+- name: 2d.pattern.image.null
+  code: |
+    @assert throws TypeError ctx.createPattern(null, 'repeat');
+    t.done();
+
+- name: 2d.pattern.image.string
+  code: |
+    @assert throws TypeError ctx.createPattern('../images/red.png', 'repeat');
+    t.done();
+
+- name: 2d.pattern.repeat.empty
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+    var promise = new Promise(function(resolve, reject) {
+        var xhr = new XMLHttpRequest();
+        xhr.open("GET", '/images/green-1x1.png');
+        xhr.responseType = 'blob';
+        xhr.send();
+        xhr.onload = function() {
+            resolve(xhr.response);
+        };
+    });
+    promise.then(function(response) {
+        createImageBitmap(response).then(bitmap => {
+            var pattern = ctx.createPattern(bitmap, "");
+            ctx.fillStyle = pattern;
+            ctx.fillRect(0, 0, 200, 50);
+            @assert pixel 1,1 == 0,255,0,255;
+            @assert pixel 98,1 == 0,255,0,255;
+            @assert pixel 1,48 == 0,255,0,255;
+            @assert pixel 98,48 == 0,255,0,255;
+        }, t_fail);
+    }).then(t_pass, t_fail);
+
+- name: 2d.pattern.repeat.null
+  code: |
+    @assert ctx.createPattern(canvas, null) != null;
+    t.done();
+
+- name: 2d.pattern.repeat.undefined
+  code: |
+    @assert throws SYNTAX_ERR ctx.createPattern(canvas, undefined);
+    t.done();
+
+- name: 2d.pattern.repeat.unrecognised
+  code: |
+    @assert throws SYNTAX_ERR ctx.createPattern(canvas, "invalid");
+    t.done();
+
+- name: 2d.pattern.repeat.unrecognisednull
+  code: |
+    @assert throws SYNTAX_ERR ctx.createPattern(canvas, "null");
+    t.done();
+
+- name: 2d.pattern.repeat.case
+  code: |
+    @assert throws SYNTAX_ERR ctx.createPattern(canvas, "Repeat");
+    t.done();
+
+- name: 2d.pattern.repeat.nullsuffix
+  code: |
+    @assert throws SYNTAX_ERR ctx.createPattern(canvas, "repeat\0");
+    t.done();
+
+- name: 2d.pattern.modify.canvas1
+  code: |
+    var offscreenCanvas2 = new OffscreenCanvas(100, 50);
+    var ctx2 = offscreenCanvas2.getContext('2d');
+    ctx2.fillStyle = '#0f0';
+    ctx2.fillRect(0, 0, 100, 50);
+    var pattern = ctx.createPattern(offscreenCanvas2, 'no-repeat');
+    ctx2.fillStyle = '#f00';
+    ctx2.fillRect(0, 0, 100, 50);
+    ctx.fillStyle = pattern;
+    ctx.fillRect(0, 0, 100, 50);
+    @assert pixel 1,1 == 0,255,0,255;
+    @assert pixel 98,1 == 0,255,0,255;
+    @assert pixel 1,48 == 0,255,0,255;
+    @assert pixel 98,48 == 0,255,0,255;
+    t.done();
+
+- name: 2d.pattern.modify.canvas2
+  code: |
+    var offscreenCanvas2 = new OffscreenCanvas(100, 50);
+    var ctx2 = offscreenCanvas2.getContext('2d');
+    ctx2.fillStyle = '#0f0';
+    ctx2.fillRect(0, 0, 100, 50);
+    var pattern = ctx.createPattern(offscreenCanvas2, 'no-repeat');
+    ctx.fillStyle = pattern;
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx2.fillStyle = '#f00';
+    ctx2.fillRect(0, 0, 100, 50);
+    ctx.fillStyle = pattern;
+    ctx.fillRect(0, 0, 100, 50);
+    @assert pixel 1,1 == 0,255,0,255;
+    @assert pixel 98,1 == 0,255,0,255;
+    @assert pixel 1,48 == 0,255,0,255;
+    @assert pixel 98,48 == 0,255,0,255;
+    t.done();
+
+- name: 2d.pattern.crosscanvas
+  code: |
+    var promise = new Promise(function(resolve, reject) {
+        var xhr = new XMLHttpRequest();
+        xhr.open("GET", '/images/green.png');
+        xhr.responseType = 'blob';
+        xhr.send();
+        xhr.onload = function() {
+            resolve(xhr.response);
+        };
+    });
+    promise.then(function(response) {
+        createImageBitmap(response).then(bitmap => {
+            var offscreenCanvas2 = new OffscreenCanvas(100, 50);
+            var pattern = offscreenCanvas2.getContext('2d').createPattern(bitmap, 'no-repeat');
+            ctx.fillStyle = '#f00';
+            ctx.fillRect(0, 0, 100, 50);
+            ctx.fillStyle = pattern;
+            ctx.fillRect(0, 0, 100, 50);
+            @assert pixel 50,25 == 0,255,0,255;
+        }, t_fail);
+    }).then(t_pass, t_fail);
+
+- name: 2d.pattern.paint.norepeat.basic
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+    var promise = new Promise(function(resolve, reject) {
+        var xhr = new XMLHttpRequest();
+        xhr.open("GET", '/images/green.png');
+        xhr.responseType = 'blob';
+        xhr.send();
+        xhr.onload = function() {
+            resolve(xhr.response);
+        };
+    });
+    promise.then(function(response) {
+        createImageBitmap(response).then(bitmap => {
+            var pattern = ctx.createPattern(bitmap, 'no-repeat');
+            ctx.fillStyle = pattern;
+            ctx.fillRect(0, 0, 100, 50);
+            @assert pixel 1,1 == 0,255,0,255;
+            @assert pixel 98,1 == 0,255,0,255;
+            @assert pixel 1,48 == 0,255,0,255;
+            @assert pixel 98,48 == 0,255,0,255;
+        }, t_fail);
+    }).then(t_pass, t_fail);
+
+- name: 2d.pattern.paint.norepeat.outside
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+    var promise = new Promise(function(resolve, reject) {
+        var xhr = new XMLHttpRequest();
+        xhr.open("GET", '/images/red.png');
+        xhr.responseType = 'blob';
+        xhr.send();
+        xhr.onload = function() {
+            resolve(xhr.response);
+        };
+    });
+    promise.then(function(response) {
+        createImageBitmap(response).then(bitmap => {
+            var pattern = ctx.createPattern(bitmap, 'no-repeat');
+            ctx.fillStyle = '#0f0';
+            ctx.fillRect(0, 0, 100, 50);
+            ctx.fillStyle = pattern;
+            ctx.fillRect(0, -50, 100, 50);
+            ctx.fillRect(-100, 0, 100, 50);
+            ctx.fillRect(0, 50, 100, 50);
+            ctx.fillRect(100, 0, 100, 50);
+            @assert pixel 1,1 == 0,255,0,255;
+            @assert pixel 98,1 == 0,255,0,255;
+            @assert pixel 1,48 == 0,255,0,255;
+            @assert pixel 98,48 == 0,255,0,255;
+        }, t_fail);
+    }).then(t_pass, t_fail);
+
+- name: 2d.pattern.paint.norepeat.coord1
+  code: |
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 50, 50);
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(50, 0, 50, 50);
+    var promise = new Promise(function(resolve, reject) {
+        var xhr = new XMLHttpRequest();
+        xhr.open("GET", '/images/green.png');
+        xhr.responseType = 'blob';
+        xhr.send();
+        xhr.onload = function() {
+            resolve(xhr.response);
+        };
+    });
+    promise.then(function(response) {
+        createImageBitmap(response).then(bitmap => {
+            var pattern = ctx.createPattern(bitmap, 'no-repeat');
+            ctx.fillStyle = pattern;
+            ctx.translate(50, 0);
+            ctx.fillRect(-50, 0, 100, 50);
+            @assert pixel 1,1 == 0,255,0,255;
+            @assert pixel 98,1 == 0,255,0,255;
+            @assert pixel 1,48 == 0,255,0,255;
+            @assert pixel 98,48 == 0,255,0,255;
+        }, t_fail);
+    }).then(t_pass, t_fail);
+
+- name: 2d.pattern.paint.norepeat.coord2
+  code: |
+    var promise = new Promise(function(resolve, reject) {
+        var xhr = new XMLHttpRequest();
+        xhr.open("GET", '/images/green.png');
+        xhr.responseType = 'blob';
+        xhr.send();
+        xhr.onload = function() {
+            resolve(xhr.response);
+        };
+    });
+    promise.then(function(response) {
+        createImageBitmap(response).then(bitmap => {
+            var pattern = ctx.createPattern(bitmap, 'no-repeat');
+            ctx.fillStyle = pattern;
+            ctx.fillRect(0, 0, 50, 50);
+            ctx.fillStyle = '#f00';
+            ctx.fillRect(50, 0, 50, 50);
+            ctx.fillStyle = pattern;
+            ctx.translate(50, 0);
+            ctx.fillRect(-50, 0, 100, 50);
+            @assert pixel 1,1 == 0,255,0,255;
+            @assert pixel 98,1 == 0,255,0,255;
+            @assert pixel 1,48 == 0,255,0,255;
+            @assert pixel 98,48 == 0,255,0,255;
+        }, t_fail);
+    }).then(t_pass, t_fail);
+
+- name: 2d.pattern.paint.norepeat.coord3
+  code: |
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 100, 50);
+    var promise = new Promise(function(resolve, reject) {
+        var xhr = new XMLHttpRequest();
+        xhr.open("GET", '/images/red.png');
+        xhr.responseType = 'blob';
+        xhr.send();
+        xhr.onload = function() {
+            resolve(xhr.response);
+        };
+    });
+    promise.then(function(response) {
+        createImageBitmap(response).then(bitmap => {
+            var pattern = ctx.createPattern(bitmap, 'no-repeat');
+            ctx.fillStyle = pattern;
+            ctx.translate(50, 25);
+            ctx.fillRect(-50, -25, 100, 50);
+            ctx.fillStyle = '#0f0';
+            ctx.fillRect(0, 0, 50, 25);
+            @assert pixel 1,1 == 0,255,0,255;
+            @assert pixel 98,1 == 0,255,0,255;
+            @assert pixel 1,48 == 0,255,0,255;
+            @assert pixel 98,48 == 0,255,0,255;
+        }, t_fail);
+    }).then(t_pass, t_fail);
+
+- name: 2d.pattern.paint.repeat.basic
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+    var promise = new Promise(function(resolve, reject) {
+        var xhr = new XMLHttpRequest();
+        xhr.open("GET", '/images/green-16x16.png');
+        xhr.responseType = 'blob';
+        xhr.send();
+        xhr.onload = function() {
+            resolve(xhr.response);
+        };
+    });
+    promise.then(function(response) {
+        createImageBitmap(response).then(bitmap => {
+            var pattern = ctx.createPattern(bitmap, 'no-repeat');
+            ctx.fillStyle = pattern;
+            ctx.fillRect(0, 0, 100, 50);
+            @assert pixel 1,1 == 0,255,0,255;
+            @assert pixel 98,1 == 0,255,0,255;
+            @assert pixel 1,48 == 0,255,0,255;
+            @assert pixel 98,48 == 0,255,0,255;
+        }, t_fail);
+    }).then(t_pass, t_fail);
+
+- name: 2d.pattern.paint.repeat.outside
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+    var promise = new Promise(function(resolve, reject) {
+        var xhr = new XMLHttpRequest();
+        xhr.open("GET", '/images/green-16x16.png');
+        xhr.responseType = 'blob';
+        xhr.send();
+        xhr.onload = function() {
+            resolve(xhr.response);
+        };
+    });
+    promise.then(function(response) {
+        createImageBitmap(response).then(bitmap => {
+            var pattern = ctx.createPattern(bitmap, 'no-repeat');
+            ctx.fillStyle = pattern;
+            ctx.translate(50, 25);
+            ctx.fillRect(-50, -25, 100, 50);
+            @assert pixel 1,1 == 0,255,0,255;
+            @assert pixel 98,1 == 0,255,0,255;
+            @assert pixel 1,48 == 0,255,0,255;
+            @assert pixel 98,48 == 0,255,0,255;
+        }, t_fail);
+    }).then(t_pass, t_fail);
+
+- name: 2d.pattern.paint.repeat.coord1
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+    var promise = new Promise(function(resolve, reject) {
+        var xhr = new XMLHttpRequest();
+        xhr.open("GET", '/images/rgrg-256x256.png');
+        xhr.responseType = 'blob';
+        xhr.send();
+        xhr.onload = function() {
+            resolve(xhr.response);
+        };
+    });
+    promise.then(function(response) {
+        createImageBitmap(response).then(bitmap => {
+            var pattern = ctx.createPattern(bitmap, 'no-repeat');
+            ctx.fillStyle = pattern;
+            ctx.translate(-128, -78);
+            ctx.fillRect(128, 78, 100, 50);
+            @assert pixel 1,1 == 0,255,0,255;
+            @assert pixel 98,1 == 0,255,0,255;
+            @assert pixel 1,48 == 0,255,0,255;
+            @assert pixel 98,48 == 0,255,0,255;
+        }, t_fail);
+    }).then(t_pass, t_fail);
+
+- name: 2d.pattern.paint.repeat.coord2
+  code: |
+    var promise = new Promise(function(resolve, reject) {
+        var xhr = new XMLHttpRequest();
+        xhr.open("GET", '/images/grgr-256x256.png');
+        xhr.responseType = 'blob';
+        xhr.send();
+        xhr.onload = function() {
+            resolve(xhr.response);
+        };
+    });
+    promise.then(function(response) {
+        createImageBitmap(response).then(bitmap => {
+            var pattern = ctx.createPattern(bitmap, 'no-repeat');
+            ctx.fillStyle = pattern;
+            ctx.fillRect(0, 0, 100, 50);
+            @assert pixel 1,1 == 0,255,0,255;
+            @assert pixel 98,1 == 0,255,0,255;
+            @assert pixel 1,48 == 0,255,0,255;
+            @assert pixel 98,48 == 0,255,0,255;
+        }, t_fail);
+    }).then(t_pass, t_fail);
+
+- name: 2d.pattern.paint.repeat.coord3
+  code: |
+    var promise = new Promise(function(resolve, reject) {
+        var xhr = new XMLHttpRequest();
+        xhr.open("GET", '/images/rgrg-256x256.png');
+        xhr.responseType = 'blob';
+        xhr.send();
+        xhr.onload = function() {
+            resolve(xhr.response);
+        };
+    });
+    promise.then(function(response) {
+        createImageBitmap(response).then(bitmap => {
+            var pattern = ctx.createPattern(bitmap, 'no-repeat');
+            ctx.fillStyle = pattern;
+            ctx.fillRect(0, 0, 100, 50);
+            ctx.translate(-128, -78);
+            ctx.fillRect(128, 78, 100, 50);
+            @assert pixel 1,1 == 0,255,0,255;
+            @assert pixel 98,1 == 0,255,0,255;
+            @assert pixel 1,48 == 0,255,0,255;
+            @assert pixel 98,48 == 0,255,0,255;
+        }, t_fail);
+    }).then(t_pass, t_fail);
+
+- name: 2d.pattern.paint.repeatx.basic
+  code: |
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 16);
+    var promise = new Promise(function(resolve, reject) {
+        var xhr = new XMLHttpRequest();
+        xhr.open("GET", '/images/green-16x16.png');
+        xhr.responseType = 'blob';
+        xhr.send();
+        xhr.onload = function() {
+            resolve(xhr.response);
+        };
+    });
+    promise.then(function(response) {
+        createImageBitmap(response).then(bitmap => {
+            var pattern = ctx.createPattern(bitmap, 'repeat-x');
+            ctx.fillStyle = pattern;
+            ctx.fillRect(0, 0, 100, 50);
+            @assert pixel 1,1 == 0,255,0,255;
+            @assert pixel 98,1 == 0,255,0,255;
+            @assert pixel 1,48 == 0,255,0,255;
+            @assert pixel 98,48 == 0,255,0,255;
+        }, t_fail);
+    }).then(t_pass, t_fail);
+
+- name: 2d.pattern.paint.repeatx.outside
+  code: |
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 100, 50);
+    var promise = new Promise(function(resolve, reject) {
+        var xhr = new XMLHttpRequest();
+        xhr.open("GET", '/images/red-16x16.png');
+        xhr.responseType = 'blob';
+        xhr.send();
+        xhr.onload = function() {
+            resolve(xhr.response);
+        };
+    });
+    promise.then(function(response) {
+        createImageBitmap(response).then(bitmap => {
+            var pattern = ctx.createPattern(bitmap, 'repeat-x');
+            ctx.fillStyle = pattern;
+            ctx.fillRect(0, 0, 100, 50);
+            ctx.fillStyle = '#0f0';
+            ctx.fillRect(0, 0, 100, 16);
+            @assert pixel 1,1 == 0,255,0,255;
+            @assert pixel 98,1 == 0,255,0,255;
+            @assert pixel 1,48 == 0,255,0,255;
+            @assert pixel 98,48 == 0,255,0,255;
+        }, t_fail);
+    }).then(t_pass, t_fail);
+
+- name: 2d.pattern.paint.repeatx.coord1
+  code: |
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 100, 50);
+    var promise = new Promise(function(resolve, reject) {
+        var xhr = new XMLHttpRequest();
+        xhr.open("GET", '/images/red-16x16.png');
+        xhr.responseType = 'blob';
+        xhr.send();
+        xhr.onload = function() {
+            resolve(xhr.response);
+        };
+    });
+    promise.then(function(response) {
+        createImageBitmap(response).then(bitmap => {
+            var pattern = ctx.createPattern(bitmap, 'repeat-x');
+            ctx.fillStyle = pattern;
+            ctx.translate(0, 16);
+            ctx.fillRect(0, -16, 100, 50);
+            ctx.fillStyle = '#0f0';
+            ctx.fillRect(0, 0, 100, 16);
+            @assert pixel 1,1 == 0,255,0,255;
+            @assert pixel 98,1 == 0,255,0,255;
+            @assert pixel 1,25 == 0,255,0,255;
+            @assert pixel 98,25 == 0,255,0,255;
+            @assert pixel 1,48 == 0,255,0,255;
+            @assert pixel 98,48 == 0,255,0,255;
+        }, t_fail);
+    }).then(t_pass, t_fail);
+
+- name: 2d.pattern.paint.repeaty.basic
+  code: |
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 16, 50);
+    var promise = new Promise(function(resolve, reject) {
+        var xhr = new XMLHttpRequest();
+        xhr.open("GET", '/images/green-16x16.png');
+        xhr.responseType = 'blob';
+        xhr.send();
+        xhr.onload = function() {
+            resolve(xhr.response);
+        };
+    });
+    promise.then(function(response) {
+        createImageBitmap(response).then(bitmap => {
+            var pattern = ctx.createPattern(bitmap, 'repeat-y');
+            ctx.fillStyle = pattern;
+            ctx.fillRect(0, 0, 100, 50);
+            @assert pixel 1,1 == 0,255,0,255;
+            @assert pixel 98,1 == 0,255,0,255;
+            @assert pixel 1,48 == 0,255,0,255;
+            @assert pixel 98,48 == 0,255,0,255;
+        }, t_fail);
+    }).then(t_pass, t_fail);
+
+- name: 2d.pattern.paint.repeaty.outside
+  code: |
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 100, 50);
+    var promise = new Promise(function(resolve, reject) {
+        var xhr = new XMLHttpRequest();
+        xhr.open("GET", '/images/red-16x16.png');
+        xhr.responseType = 'blob';
+        xhr.send();
+        xhr.onload = function() {
+            resolve(xhr.response);
+        };
+    });
+    promise.then(function(response) {
+        createImageBitmap(response).then(bitmap => {
+            var pattern = ctx.createPattern(bitmap, 'repeat-y');
+            ctx.fillStyle = pattern;
+            ctx.fillRect(0, 0, 100, 50);
+            ctx.fillStyle = '#0f0';
+            ctx.fillRect(0, 0, 16, 50);
+            @assert pixel 1,1 == 0,255,0,255;
+            @assert pixel 98,1 == 0,255,0,255;
+            @assert pixel 1,48 == 0,255,0,255;
+            @assert pixel 98,48 == 0,255,0,255;
+        }, t_fail);
+    }).then(t_pass, t_fail);
+
+- name: 2d.pattern.paint.repeaty.coord1
+  images:
+  - red-16x16.png
+  code: |
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 100, 50);
+    var promise = new Promise(function(resolve, reject) {
+        var xhr = new XMLHttpRequest();
+        xhr.open("GET", '/images/red-16x16.png');
+        xhr.responseType = 'blob';
+        xhr.send();
+        xhr.onload = function() {
+            resolve(xhr.response);
+        };
+    });
+    promise.then(function(response) {
+        createImageBitmap(response).then(bitmap => {
+            var pattern = ctx.createPattern(bitmap, 'repeat-y');
+            ctx.fillStyle = pattern;
+            ctx.translate(48, 0);
+            ctx.fillRect(-48, 0, 100, 50);
+            ctx.fillStyle = '#0f0';
+            ctx.fillRect(0, 0, 16, 50);
+            @assert pixel 1,1 == 0,255,0,255;
+            @assert pixel 50,1 == 0,255,0,255;
+            @assert pixel 98,1 == 0,255,0,255;
+            @assert pixel 1,48 == 0,255,0,255;
+            @assert pixel 50,48 == 0,255,0,255;
+            @assert pixel 98,48 == 0,255,0,255;
+        }, t_fail);
+    }).then(t_pass, t_fail);
+
+- name: 2d.pattern.paint.orientation.image
+  desc: Image patterns do not get flipped when painted
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+    var promise = new Promise(function(resolve, reject) {
+        var xhr = new XMLHttpRequest();
+        xhr.open("GET", '/images/rrgg-256x256.png');
+        xhr.responseType = 'blob';
+        xhr.send();
+        xhr.onload = function() {
+            resolve(xhr.response);
+        };
+    });
+    promise.then(function(response) {
+        createImageBitmap(response).then(bitmap => {
+            var pattern = ctx.createPattern(bitmap, 'no-repeat');
+            ctx.fillStyle = pattern;
+            ctx.save();
+            ctx.translate(0, -103);
+            ctx.fillRect(0, 103, 100, 50);
+            ctx.restore();
+            ctx.fillStyle = '#0f0';
+            ctx.fillRect(0, 0, 100, 25);
+            @assert pixel 1,1 == 0,255,0,255;
+            @assert pixel 98,1 == 0,255,0,255;
+            @assert pixel 1,48 == 0,255,0,255;
+            @assert pixel 98,48 == 0,255,0,255;
+        }, t_fail);
+    }).then(t_pass, t_fail);
+
+- name: 2d.pattern.paint.orientation.canvas
+  desc: Canvas patterns do not get flipped when painted
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+    var offscreenCanvas2 = new OffscreenCanvas(100, 50);
+    var ctx2 = offscreenCanvas2.getContext('2d');
+    ctx2.fillStyle = '#f00';
+    ctx2.fillRect(0, 0, 100, 25);
+    ctx2.fillStyle = '#0f0';
+    ctx2.fillRect(0, 25, 100, 25);
+    var pattern = ctx.createPattern(offscreenCanvas2, 'no-repeat');
+    ctx.fillStyle = pattern;
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 100, 25);
+    @assert pixel 1,1 == 0,255,0,255;
+    @assert pixel 98,1 == 0,255,0,255;
+    @assert pixel 1,48 == 0,255,0,255;
+    @assert pixel 98,48 == 0,255,0,255;
+    t.done();
diff --git a/testing/web-platform/tests/html/canvas/tools/yaml/offscreen/meta.yaml b/testing/web-platform/tests/html/canvas/tools/yaml/offscreen/meta.yaml
new file mode 100644
index 0000000000..43a67d54ab
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/tools/yaml/offscreen/meta.yaml
@@ -0,0 +1,539 @@
+- meta: |
+    state = [ # some non-default values to test with
+        ('strokeStyle', '"#ff0000"'),
+        ('fillStyle', '"#ff0000"'),
+        ('globalAlpha', 0.5),
+        ('lineWidth', 0.5),
+        ('lineCap', '"round"'),
+        ('lineJoin', '"round"'),
+        ('miterLimit', 0.5),
+        ('shadowOffsetX', 5),
+        ('shadowOffsetY', 5),
+        ('shadowBlur', 5),
+        ('shadowColor', '"#ff0000"'),
+        ('globalCompositeOperation', '"copy"'),
+    ]
+    for key,value in state:
+        tests.append( {
+            'name': '2d.state.saverestore.%s' % key,
+            'desc': 'save()/restore() works for %s' % key,
+            'code':
+    """// Test that restore() undoes any modifications
+    var old = ctx.%(key)s;
+    ctx.save();
+    ctx.%(key)s = %(value)s;
+    ctx.restore();
+    @assert ctx.%(key)s === old;
+
+    // Also test that save() doesn't modify the values
+    ctx.%(key)s = %(value)s;
+    old = ctx.%(key)s;
+        // we're not interested in failures caused by get(set(x)) != x (e.g.
+        // from rounding), so compare against 'old' instead of against %(value)s
+    ctx.save();
+    @assert ctx.%(key)s === old;
+    ctx.restore();
+    t.done();
+    """ % { 'key':key, 'value':value }
+        } )
+
+    tests.append( {
+        'name': 'initial.reset.2dstate',
+        'desc': 'Resetting the canvas state resets 2D state variables',
+        'code':
+    """canvas.width = 100;
+    var default_val;
+    """ + "".join(
+    """
+    default_val = ctx.%(key)s;
+    ctx.%(key)s = %(value)s;
+    canvas.width = 100;
+    @assert ctx.%(key)s === default_val;
+    """ % { 'key':key, 'value':value }
+        for key,value in state) + "\nt.done();",
+    } )
+
+- meta: |
+    # Composite operation tests
+    # 
+    ops = [
+        # name               FA      FB
+        ('source-over',      '1',    '1-aA'),
+        ('destination-over', '1-aB', '1'),
+        ('source-in',        'aB',   '0'),
+        ('destination-in',   '0',    'aA'),
+        ('source-out',       '1-aB', '0'),
+        ('destination-out',  '0',    '1-aA'),
+        ('source-atop',      'aB',   '1-aA'),
+        ('destination-atop', '1-aB', 'aA'),
+        ('xor',              '1-aB', '1-aA'),
+        ('copy',             '1',    '0'),
+        ('lighter',          '1',    '1'),
+        ('clear',            '0',    '0'),
+    ]
+
+    # The ones that change the output when src = (0,0,0,0):
+    ops_trans = [ 'source-in', 'destination-in', 'source-out', 'destination-atop', 'copy' ];
+
+    def calc_output(A, B, FA_code, FB_code):
+        RA, GA, BA, aA = A
+        RB, GB, BB, aB = B
+        rA, gA, bA = RA*aA, GA*aA, BA*aA
+        rB, gB, bB = RB*aB, GB*aB, BB*aB
+
+        FA = eval(FA_code)
+        FB = eval(FB_code)
+
+        rO = rA*FA + rB*FB
+        gO = gA*FA + gB*FB
+        bO = bA*FA + bB*FB
+        aO = aA*FA + aB*FB
+
+        rO = min(255, rO)
+        gO = min(255, gO)
+        bO = min(255, bO)
+        aO = min(1, aO)
+
+        if aO:
+            RO = rO / aO
+            GO = gO / aO
+            BO = bO / aO
+        else: RO = GO = BO = 0
+
+        return (RO, GO, BO, aO)
+
+    def to_test(color):
+        r, g, b, a = color
+        return '%d,%d,%d,%d' % (round(r), round(g), round(b), round(a*255))
+    def to_cairo(color):
+        r, g, b, a = color
+        return '%f,%f,%f,%f' % (r/255., g/255., b/255., a)
+
+    for (name, src, dest) in [
+        ('solid', (255, 255, 0, 1.0), (0, 255, 255, 1.0)),
+        ('transparent', (0, 0, 255, 0.75), (0, 255, 0, 0.5)),
+            # catches the atop, xor and lighter bugs in Opera 9.10
+    ]:
+        for op, FA_code, FB_code in ops:
+            expected = calc_output(src, dest, FA_code, FB_code)
+            tests.append( {
+                'name': '2d.composite.%s.%s' % (name, op),
+                'code': """
+    ctx.fillStyle = 'rgba%s';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.globalCompositeOperation = '%s';
+    ctx.fillStyle = 'rgba%s';
+    ctx.fillRect(0, 0, 100, 50);
+    @assert pixel 50,25 ==~ %s +/- 5;
+    t.done();
+    """ % (dest, op, src, to_test(expected)),
+            } )
+
+    for (name, src, dest) in [ ('image', (255, 255, 0, 0.75), (0, 255, 255, 0.5)) ]:
+        for op, FA_code, FB_code in ops:
+            expected = calc_output(src, dest, FA_code, FB_code)
+            tests.append( {
+                'name': '2d.composite.%s.%s' % (name, op),
+                'images': [ 'yellow75.png' ],
+                'code': """
+    ctx.fillStyle = 'rgba%s';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.globalCompositeOperation = '%s';
+    var promise = new Promise(function(resolve, reject) {
+        var xhr = new XMLHttpRequest();
+        xhr.open("GET", '/images/yellow75.png');
+        xhr.responseType = 'blob';
+        xhr.send();
+        xhr.onload = function() {
+            resolve(xhr.response);
+        };
+    });
+    promise.then(function(response) {
+        createImageBitmap(response).then(bitmap => {
+            ctx.drawImage(bitmap, 0, 0);
+            @assert pixel 50,25 ==~ %s +/- 5;
+        }, t_fail);
+    }).then(t_pass, t_fail);
+    """ % (dest, op, to_test(expected)),
+            } )
+
+    for (name, src, dest) in [ ('canvas', (255, 255, 0, 0.75), (0, 255, 255, 0.5)) ]:
+        for op, FA_code, FB_code in ops:
+            expected = calc_output(src, dest, FA_code, FB_code)
+            tests.append( {
+                'name': '2d.composite.%s.%s' % (name, op),
+                'images': [ 'yellow75.png' ],
+                'code': """
+    var offscreenCanvas2 = new OffscreenCanvas(canvas.width, canvas.height);
+    var ctx2 = offscreenCanvas2.getContext('2d');
+    var promise = new Promise(function(resolve, reject) {
+        var xhr = new XMLHttpRequest();
+        xhr.open("GET", '/images/yellow75.png');
+        xhr.responseType = 'blob';
+        xhr.send();
+        xhr.onload = function() {
+            resolve(xhr.response);
+        };
+    });
+    promise.then(function(response) {
+        createImageBitmap(response).then(bitmap => {
+            ctx2.drawImage(bitmap, 0, 0);
+            ctx.fillStyle = 'rgba%s';
+            ctx.fillRect(0, 0, 100, 50);
+            ctx.globalCompositeOperation = '%s';
+            ctx.drawImage(offscreenCanvas2, 0, 0);
+            @assert pixel 50,25 ==~ %s +/- 5;
+        }, t_fail);
+    }).then(t_pass, t_fail);
+    """ % (dest, op, to_test(expected)),
+            } )
+
+    for (name, src, dest) in [ ('uncovered.fill', (0, 0, 255, 0.75), (0, 255, 0, 0.5)) ]:
+        for op, FA_code, FB_code in ops:
+            if op not in ops_trans: continue
+            expected0 = calc_output((0,0,0,0.0), dest, FA_code, FB_code)
+            new_test = {
+                'name': '2d.composite.%s.%s' % (name, op),
+                'desc': 'fill() draws pixels not covered by the source object as (0,0,0,0), and does not leave the pixels unchanged.',
+                'code': """
+    ctx.fillStyle = 'rgba%s';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.globalCompositeOperation = '%s';
+    ctx.fillStyle = 'rgba%s';
+    ctx.translate(0, 25);
+    ctx.fillRect(0, 50, 100, 50);
+    @assert pixel 50,25 ==~ %s +/- 5;
+    t.done();
+    """ % (dest, op, src, to_test(expected0)),
+            }
+            if op == 'destination-in':
+              new_test['timeout'] = 'long'
+            tests.append(new_test)
+
+    for (name, src, dest) in [ ('uncovered.image', (255, 255, 0, 1.0), (0, 255, 255, 0.5)) ]:
+        for op, FA_code, FB_code in ops:
+            if op not in ops_trans: continue
+            expected0 = calc_output((0,0,0,0.0), dest, FA_code, FB_code)
+            tests.append( {
+                'name': '2d.composite.%s.%s' % (name, op),
+                'desc': 'drawImage() draws pixels not covered by the source object as (0,0,0,0), and does not leave the pixels unchanged.',
+                'images': [ 'yellow.png' ],
+                'code': """
+    ctx.fillStyle = 'rgba%s';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.globalCompositeOperation = '%s';
+    var promise = new Promise(function(resolve, reject) {
+        var xhr = new XMLHttpRequest();
+        xhr.open("GET", '/images/yellow.png');
+        xhr.responseType = 'blob';
+        xhr.send();
+        xhr.onload = function() {
+            resolve(xhr.response);
+        };
+    });
+    promise.then(function(response) {
+        createImageBitmap(response).then(bitmap => {
+            ctx.drawImage(bitmap, 40, 40, 10, 10, 40, 50, 10, 10);
+            @assert pixel 15,15 ==~ %s +/- 5;
+            @assert pixel 50,25 ==~ %s +/- 5;
+        }, t_fail);
+    }).then(t_pass, t_fail);
+    """ % (dest, op, to_test(expected0), to_test(expected0)),
+            } )
+
+    for (name, src, dest) in [ ('uncovered.nocontext', (255, 255, 0, 1.0), (0, 255, 255, 0.5)) ]:
+        for op, FA_code, FB_code in ops:
+            if op not in ops_trans: continue
+            expected0 = calc_output((0,0,0,0.0), dest, FA_code, FB_code)
+            tests.append( {
+                'name': '2d.composite.%s.%s' % (name, op),
+                'desc': 'drawImage() of a canvas with no context draws pixels as (0,0,0,0), and does not leave the pixels unchanged.',
+                'code': """
+    ctx.fillStyle = 'rgba%s';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.globalCompositeOperation = '%s';
+    var offscreenCanvas2 = new OffscreenCanvas(100, 50);
+    ctx.drawImage(offscreenCanvas2, 0, 0);
+    @assert pixel 50,25 ==~ %s +/- 5;
+    t.done();
+    """ % (dest, op, to_test(expected0)),
+            } )
+
+    for (name, src, dest) in [ ('uncovered.pattern', (255, 255, 0, 1.0), (0, 255, 255, 0.5)) ]:
+        for op, FA_code, FB_code in ops:
+            if op not in ops_trans: continue
+            expected0 = calc_output((0,0,0,0.0), dest, FA_code, FB_code)
+            tests.append( {
+                'name': '2d.composite.%s.%s' % (name, op),
+                'desc': 'Pattern fill() draws pixels not covered by the source object as (0,0,0,0), and does not leave the pixels unchanged.',
+                'images': [ 'yellow.png' ],
+                'code': """
+    ctx.fillStyle = 'rgba%s';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.globalCompositeOperation = '%s';
+    var promise = new Promise(function(resolve, reject) {
+        var xhr = new XMLHttpRequest();
+        xhr.open("GET", '/images/yellow.png');
+        xhr.responseType = 'blob';
+        xhr.send();
+        xhr.onload = function() {
+            resolve(xhr.response);
+        };
+    });
+    promise.then(function(response) {
+        createImageBitmap(response).then(bitmap => {
+            ctx.fillStyle = ctx.createPattern(bitmap, 'no-repeat');
+            ctx.fillRect(0, 50, 100, 50);
+            @assert pixel 50,25 ==~ %s +/- 5;
+        }, t_fail);
+    }).then(t_pass, t_fail);
+    """ % (dest, op, to_test(expected0)),
+            } )
+
+    for op, FA_code, FB_code in ops:
+        tests.append( {
+            'name': '2d.composite.clip.%s' % (op),
+            'desc': 'fill() does not affect pixels outside the clip region.',
+            'code': """
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.globalCompositeOperation = '%s';
+    ctx.rect(-20, -20, 10, 10);
+    ctx.clip();
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 50, 50);
+    @assert pixel 25,25 == 0,255,0,255;
+    @assert pixel 75,25 == 0,255,0,255;
+    t.done();
+    """ % (op),
+        } )
+
+- meta: |
+    # Color parsing tests
+
+    # Try most of the CSS3 Color  values - http://www.w3.org/TR/css3-color/#colorunits
+    big_float = '1' + ('0' * 39)
+    big_double = '1' + ('0' * 310)
+    for name, string, r,g,b,a, notes in [
+        ('html4', 'limE', 0,255,0,255, ""),
+        ('hex3', '#0f0', 0,255,0,255, ""),
+        ('hex4', '#0f0f', 0,255,0,255, ""),
+        ('hex6', '#00fF00', 0,255,0,255, ""),
+        ('hex8', '#00ff00ff', 0,255,0,255, ""),
+        ('rgb-num', 'rgb(0,255,0)', 0,255,0,255, ""),
+        ('rgb-clamp-1', 'rgb(-1000, 1000, -1000)', 0,255,0,255, 'Assumes colors are clamped to [0,255].'),
+        ('rgb-clamp-2', 'rgb(-200%, 200%, -200%)', 0,255,0,255, 'Assumes colors are clamped to [0,255].'),
+        ('rgb-clamp-3', 'rgb(-2147483649, 4294967298, -18446744073709551619)', 0,255,0,255, 'Assumes colors are clamped to [0,255].'),
+        ('rgb-clamp-4', 'rgb(-'+big_float+', '+big_float+', -'+big_float+')', 0,255,0,255, 'Assumes colors are clamped to [0,255].'),
+        ('rgb-clamp-5', 'rgb(-'+big_double+', '+big_double+', -'+big_double+')', 0,255,0,255, 'Assumes colors are clamped to [0,255].'),
+        ('rgb-percent', 'rgb(0% ,100% ,0%)', 0,255,0,255, 'CSS3 Color says "The integer value 255 corresponds to 100%". (In particular, it is not 254...)'),
+        ('rgb-eof', 'rgb(0, 255, 0', 0,255,0,255, ""), # see CSS2.1 4.2 "Unexpected end of style sheet"
+        ('rgba-solid-1', 'rgba(  0  ,  255  ,  0  ,  1  )', 0,255,0,255, ""),
+        ('rgba-solid-2', 'rgba(  0  ,  255  ,  0  ,  1.0  )', 0,255,0,255, ""),
+        ('rgba-solid-3', 'rgba(  0  ,  255  ,  0  , +1  )', 0,255,0,255, ""),
+        ('rgba-solid-4', 'rgba( -0  ,  255  , +0  ,  1  )', 0,255,0,255, ""),
+        ('rgba-num-1', 'rgba(  0  ,  255  ,  0  ,  .499  )', 0,255,0,127, ""),
+        ('rgba-num-2', 'rgba(  0  ,  255  ,  0  ,  0.499  )', 0,255,0,127, ""),
+        ('rgba-percent', 'rgba(0%,100%,0%,0.499)', 0,255,0,127, ""), # 0.499*255 rounds to 127, both down and nearest, so it should be safe
+        ('rgba-clamp-1', 'rgba(0, 255, 0, -2)', 0,0,0,0, ""),
+        ('rgba-clamp-2', 'rgba(0, 255, 0, 2)', 0,255,0,255, ""),
+        ('rgba-eof', 'rgba(0, 255, 0, 1', 0,255,0,255, ""),
+        ('transparent-1', 'transparent', 0,0,0,0, ""),
+        ('transparent-2', 'TrAnSpArEnT', 0,0,0,0, ""),
+        ('hsl-1', 'hsl(120, 100%, 50%)', 0,255,0,255, ""),
+        ('hsl-2', 'hsl( -240 , 100% , 50% )', 0,255,0,255, ""),
+        ('hsl-3', 'hsl(360120, 100%, 50%)', 0,255,0,255, ""),
+        ('hsl-4', 'hsl(-360240, 100%, 50%)', 0,255,0,255, ""),
+        ('hsl-5', 'hsl(120.0, 100.0%, 50.0%)', 0,255,0,255, ""),
+        ('hsl-6', 'hsl(+120, +100%, +50%)', 0,255,0,255, ""),
+        ('hsl-clamp-1', 'hsl(120, 200%, 50%)', 0,255,0,255, ""),
+        ('hsl-clamp-2', 'hsl(120, -200%, 49.9%)', 127,127,127,255, ""),
+        ('hsl-clamp-3', 'hsl(120, 100%, 200%)', 255,255,255,255, ""),
+        ('hsl-clamp-4', 'hsl(120, 100%, -200%)', 0,0,0,255, ""),
+        ('hsla-1', 'hsla(120, 100%, 50%, 0.499)', 0,255,0,127, ""),
+        ('hsla-2', 'hsla( 120.0 , 100.0% , 50.0% , 1 )', 0,255,0,255, ""),
+        ('hsla-clamp-1', 'hsla(120, 200%, 50%, 1)', 0,255,0,255, ""),
+        ('hsla-clamp-2', 'hsla(120, -200%, 49.9%, 1)', 127,127,127,255, ""),
+        ('hsla-clamp-3', 'hsla(120, 100%, 200%, 1)', 255,255,255,255, ""),
+        ('hsla-clamp-4', 'hsla(120, 100%, -200%, 1)', 0,0,0,255, ""),
+        ('hsla-clamp-5', 'hsla(120, 100%, 50%, 2)', 0,255,0,255, ""),
+        ('hsla-clamp-6', 'hsla(120, 100%, 0%, -2)', 0,0,0,0, ""),
+        ('svg-1', 'gray', 128,128,128,255, ""),
+        ('svg-2', 'grey', 128,128,128,255, ""),
+        # css-color-4 rgb() color function
+        #   https://drafts.csswg.org/css-color/#numeric-rgb
+        ('css-color-4-rgb-1', 'rgb(0, 255.0, 0)', 0,255,0,255, ""),
+        ('css-color-4-rgb-2', 'rgb(0, 255, 0, 0.2)', 0,255,0,51, ""),
+        ('css-color-4-rgb-3', 'rgb(0, 255, 0, 20%)', 0,255,0,51, ""),
+        ('css-color-4-rgb-4', 'rgb(0 255 0)', 0,255,0,255, ""),
+        ('css-color-4-rgb-5', 'rgb(0 255 0 / 0.2)', 0,255,0,51, ""),
+        ('css-color-4-rgb-6', 'rgb(0 255 0 / 20%)', 0,255,0,51, ""),
+        ('css-color-4-rgba-1', 'rgba(0, 255.0, 0)', 0,255,0,255, ""),
+        ('css-color-4-rgba-2', 'rgba(0, 255, 0, 0.2)', 0,255,0,51, ""),
+        ('css-color-4-rgba-3', 'rgba(0, 255, 0, 20%)', 0,255,0,51, ""),
+        ('css-color-4-rgba-4', 'rgba(0 255 0)', 0,255,0,255, ""),
+        ('css-color-4-rgba-5', 'rgba(0 255 0 / 0.2)', 0,255,0,51, ""),
+        ('css-color-4-rgba-6', 'rgba(0 255 0 / 20%)', 0,255,0,51, ""),
+        # css-color-4 hsl() color function
+        #   https://drafts.csswg.org/css-color/#the-hsl-notation
+        ('css-color-4-hsl-1', 'hsl(120 100.0% 50.0%)', 0,255,0,255, ""),
+        ('css-color-4-hsl-2', 'hsl(120 100.0% 50.0% / 0.2)', 0,255,0,51, ""),
+        ('css-color-4-hsl-3', 'hsl(120.0, 100.0%, 50.0%, 0.2)', 0,255,0,51, ""),
+        ('css-color-4-hsl-4', 'hsl(120.0, 100.0%, 50.0%, 20%)', 0,255,0,51, ""),
+        ('css-color-4-hsl-5', 'hsl(120deg, 100.0%, 50.0%, 0.2)', 0,255,0,51, ""),
+        ('css-color-4-hsl-6', 'hsl(120deg, 100.0%, 50.0%)', 0,255,0,255, ""),
+        ('css-color-4-hsl-7', 'hsl(133.33333333grad, 100.0%, 50.0%)', 0,255,0,255, ""),
+        ('css-color-4-hsl-8', 'hsl(2.0943951024rad, 100.0%, 50.0%)', 0,255,0,255, ""),
+        ('css-color-4-hsl-9', 'hsl(0.3333333333turn, 100.0%, 50.0%)', 0,255,0,255, ""),
+        ('css-color-4-hsla-1', 'hsl(120 100.0% 50.0%)', 0,255,0,255, ""),
+        ('css-color-4-hsla-2', 'hsl(120 100.0% 50.0% / 0.2)', 0,255,0,51, ""),
+        ('css-color-4-hsla-3', 'hsl(120.0, 100.0%, 50.0%, 0.2)', 0,255,0,51, ""),
+        ('css-color-4-hsla-4', 'hsl(120.0, 100.0%, 50.0%, 20%)', 0,255,0,51, ""),
+        ('css-color-4-hsla-5', 'hsl(120deg, 100.0%, 50.0%, 0.2)', 0,255,0,51, ""),
+        ('css-color-4-hsla-6', 'hsl(120deg, 100.0%, 50.0%)', 0,255,0,255, ""),
+        ('css-color-4-hsla-7', 'hsl(133.33333333grad, 100.0%, 50.0%)', 0,255,0,255, ""),
+        ('css-color-4-hsla-8', 'hsl(2.0943951024rad, 100.0%, 50.0%)', 0,255,0,255, ""),
+        ('css-color-4-hsla-9', 'hsl(0.3333333333turn, 100.0%, 50.0%)', 0,255,0,255, ""),
+        # currentColor is handled later
+    ]:
+        # TODO: test by retrieving fillStyle, instead of actually drawing?
+        # TODO: test strokeStyle, shadowColor in the same way
+        test = {
+            'name': '2d.fillStyle.parse.%s' % name,
+            'notes': notes,
+            'code': """
+    ctx.fillStyle = '#f00';
+    ctx.fillStyle = '%s';
+    ctx.fillRect(0, 0, 100, 50);
+    @assert pixel 50,25 == %d,%d,%d,%d;
+    t.done();
+    """ % (string, r,g,b,a),
+        }
+        tests.append(test)
+
+    # Also test that invalid colors are ignored
+    for name, string in [
+        ('hex1', '#f'),
+        ('hex2', '#f0'),
+        ('hex3', '#g00'),
+        ('hex4', '#fg00'),
+        ('hex5', '#ff000'),
+        ('hex6', '#fg0000'),
+        ('hex7', '#ff0000f'),
+        ('hex8', '#fg0000ff'),
+        ('rgb-1', 'rgb(255.0, 0, 0,)'),
+        ('rgb-2', 'rgb(100%, 0, 0)'),
+        ('rgb-3', 'rgb(255, - 1, 0)'),
+        ('rgba-1', 'rgba(100%, 0, 0, 1)'),
+        ('rgba-2', 'rgba(255, 0, 0, 1. 0)'),
+        ('rgba-3', 'rgba(255, 0, 0, 1.)'),
+        ('rgba-4', 'rgba(255, 0, 0, '),
+        ('rgba-5', 'rgba(255, 0, 0, 1,)'),
+        ('hsl-1', 'hsl(0%, 100%, 50%)'),
+        ('hsl-2', 'hsl(z, 100%, 50%)'),
+        ('hsl-3', 'hsl(0, 0, 50%)'),
+        ('hsl-4', 'hsl(0, 100%, 0)'),
+        ('hsl-5', 'hsl(0, 100.%, 50%)'),
+        ('hsl-6', 'hsl(0, 100%, 50%,)'),
+        ('hsla-1', 'hsla(0%, 100%, 50%, 1)'),
+        ('hsla-2', 'hsla(0, 0, 50%, 1)'),
+        ('hsla-3', 'hsla(0, 0, 50%, 1,)'),
+        ('name-1', 'darkbrown'),
+        ('name-2', 'firebrick1'),
+        ('name-3', 'red blue'),
+        ('name-4', '"red"'),
+        ('name-5', '"red'),
+        # css-color-4 color function
+        #   comma and comma-less expressions should not mix together.
+        ('css-color-4-rgb-1', 'rgb(255, 0, 0 / 1)'),
+        ('css-color-4-rgb-2', 'rgb(255 0 0, 1)'),
+        ('css-color-4-rgb-3', 'rgb(255, 0 0)'),
+        ('css-color-4-rgba-1', 'rgba(255, 0, 0 / 1)'),
+        ('css-color-4-rgba-2', 'rgba(255 0 0, 1)'),
+        ('css-color-4-rgba-3', 'rgba(255, 0 0)'),
+        ('css-color-4-hsl-1', 'hsl(0, 100%, 50% / 1)'),
+        ('css-color-4-hsl-2', 'hsl(0 100% 50%, 1)'),
+        ('css-color-4-hsl-3', 'hsl(0, 100% 50%)'),
+        ('css-color-4-hsla-1', 'hsla(0, 100%, 50% / 1)'),
+        ('css-color-4-hsla-2', 'hsla(0 100% 50%, 1)'),
+        ('css-color-4-hsla-3', 'hsla(0, 100% 50%)'),
+        #  trailing slash
+        ('css-color-4-rgb-4', 'rgb(0 0 0 /)'),
+        ('css-color-4-rgb-5', 'rgb(0, 0, 0 /)'),
+        ('css-color-4-hsl-4', 'hsl(0 100% 50% /)'),
+        ('css-color-4-hsl-5', 'hsl(0, 100%, 50% /)'),
+    ]:
+        test = {
+            'name': '2d.fillStyle.parse.invalid.%s' % name,
+            'code': """
+    ctx.fillStyle = '#0f0';
+    try { ctx.fillStyle = '%s'; } catch (e) { } // this shouldn't throw, but it shouldn't matter here if it does
+    ctx.fillRect(0, 0, 100, 50);
+    @assert pixel 50,25 == 0,255,0,255;
+    t.done();
+    """ % string,
+        }
+        tests.append(test)
+
+    # Some can't have positive tests, only negative tests, because we don't know what color they're meant to be
+    for name, string in [
+        ('system', 'ThreeDDarkShadow'),
+        #('flavor', 'flavor'), # removed from latest CSS3 Color drafts
+    ]:
+        test = {
+            'name': '2d.fillStyle.parse.%s' % name,
+            'code': """
+    ctx.fillStyle = '#f00';
+    ctx.fillStyle = '%s';
+    @assert ctx.fillStyle =~ /^#(?!(FF0000|ff0000|f00)$)/; // test that it's not red
+    t.done();
+    """ % (string,),
+        }
+        tests.append(test)
+
+- meta: |
+    cases = [
+        ("zero", "0", 0),
+        ("empty", "", 0),
+        ("onlyspace", "  ", 0),
+        ("space", "  100", 100),
+        ("whitespace", "\t\f100", 100),
+        ("plus", "+100", 100),
+        ("minus", "-100", "exception"),
+        ("octal", "0100", 100),
+        ("hex", "0x100", 0x100),
+        ("exp", "100e1", 100e1),
+        ("decimal", "100.999", 100),
+        ("percent", "100%", "exception"),
+        ("em", "100em", "exception"),
+        ("junk", "#!?", "exception"),
+        ("trailingjunk", "100#!?", "exception"),
+    ]
+    def gen(name, string, exp, code):
+        if exp is None:
+            code += "canvas.width = '%s';\ncanvas.height = '%s';\n" % (string, string)
+            code += "@assert canvas.width === 100;\n@assert canvas.height === 50;\n"
+            expected = None
+        elif exp == "exception":
+            code += "@assert throws TypeError canvas.width = '%s';\n" % string
+            expected = None
+        else:
+            code += "canvas.width = '%s';\ncanvas.height = '%s';\n" % (string, string)
+            code += "@assert canvas.width === %s;\n@assert canvas.height === %s;\n" % (exp, exp)
+            expected = None
+
+        code += "t.done();\n"
+
+        if exp == 0:
+            expected = None # can't generate zero-sized PNGs for the expected image
+
+        return code, expected
+
+    for name, string, exp in cases:
+        code = ""
+        code, expected = gen(name, string, exp, code)
+        tests.append( {
+            "name": "size.attributes.parse.%s" % name,
+            "desc": "Parsing of non-negative integers",
+            "code": code,
+        } )
diff --git a/testing/web-platform/tests/html/canvas/tools/yaml/offscreen/shadows.yaml b/testing/web-platform/tests/html/canvas/tools/yaml/offscreen/shadows.yaml
new file mode 100644
index 0000000000..06e2681c72
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/tools/yaml/offscreen/shadows.yaml
@@ -0,0 +1,947 @@
+- name: 2d.shadow.attributes.shadowBlur.initial
+  code: |
+    @assert ctx.shadowBlur === 0;
+    t.done();
+
+- name: 2d.shadow.attributes.shadowBlur.valid
+  code: |
+    ctx.shadowBlur = 1;
+    @assert ctx.shadowBlur === 1;
+    ctx.shadowBlur = 0.5;
+    @assert ctx.shadowBlur === 0.5;
+    ctx.shadowBlur = 1e6;
+    @assert ctx.shadowBlur === 1e6;
+    ctx.shadowBlur = 0;
+    @assert ctx.shadowBlur === 0;
+    t.done();
+
+- name: 2d.shadow.attributes.shadowBlur.invalid
+  code: |
+    ctx.shadowBlur = 1;
+    ctx.shadowBlur = -2;
+    @assert ctx.shadowBlur === 1;
+    ctx.shadowBlur = 1;
+    ctx.shadowBlur = Infinity;
+    @assert ctx.shadowBlur === 1;
+    ctx.shadowBlur = 1;
+    ctx.shadowBlur = -Infinity;
+    @assert ctx.shadowBlur === 1;
+    ctx.shadowBlur = 1;
+    ctx.shadowBlur = NaN;
+    @assert ctx.shadowBlur === 1;
+    t.done();
+
+- name: 2d.shadow.attributes.shadowOffset.initial
+  code: |
+    @assert ctx.shadowOffsetX === 0;
+    @assert ctx.shadowOffsetY === 0;
+    t.done();
+
+- name: 2d.shadow.attributes.shadowOffset.valid
+  code: |
+    ctx.shadowOffsetX = 1;
+    ctx.shadowOffsetY = 2;
+    @assert ctx.shadowOffsetX === 1;
+    @assert ctx.shadowOffsetY === 2;
+    ctx.shadowOffsetX = 0.5;
+    ctx.shadowOffsetY = 0.25;
+    @assert ctx.shadowOffsetX === 0.5;
+    @assert ctx.shadowOffsetY === 0.25;
+    ctx.shadowOffsetX = -0.5;
+    ctx.shadowOffsetY = -0.25;
+    @assert ctx.shadowOffsetX === -0.5;
+    @assert ctx.shadowOffsetY === -0.25;
+    ctx.shadowOffsetX = 0;
+    ctx.shadowOffsetY = 0;
+    @assert ctx.shadowOffsetX === 0;
+    @assert ctx.shadowOffsetY === 0;
+    ctx.shadowOffsetX = 1e6;
+    ctx.shadowOffsetY = 1e6;
+    @assert ctx.shadowOffsetX === 1e6;
+    @assert ctx.shadowOffsetY === 1e6;
+    t.done();
+
+- name: 2d.shadow.attributes.shadowOffset.invalid
+  code: |
+    ctx.shadowOffsetX = 1;
+    ctx.shadowOffsetY = 2;
+    ctx.shadowOffsetX = Infinity;
+    ctx.shadowOffsetY = Infinity;
+    @assert ctx.shadowOffsetX === 1;
+    @assert ctx.shadowOffsetY === 2;
+    ctx.shadowOffsetX = 1;
+    ctx.shadowOffsetY = 2;
+    ctx.shadowOffsetX = -Infinity;
+    ctx.shadowOffsetY = -Infinity;
+    @assert ctx.shadowOffsetX === 1;
+    @assert ctx.shadowOffsetY === 2;
+    ctx.shadowOffsetX = 1;
+    ctx.shadowOffsetY = 2;
+    ctx.shadowOffsetX = NaN;
+    ctx.shadowOffsetY = NaN;
+    @assert ctx.shadowOffsetX === 1;
+    @assert ctx.shadowOffsetY === 2;
+    t.done();
+
+- name: 2d.shadow.attributes.shadowColor.initial
+  code: |
+    @assert ctx.shadowColor === 'rgba(0, 0, 0, 0)';
+    t.done();
+
+- name: 2d.shadow.attributes.shadowColor.valid
+  code: |
+    ctx.shadowColor = 'lime';
+    @assert ctx.shadowColor === '#00ff00';
+    ctx.shadowColor = 'RGBA(0,255, 0,0)';
+    @assert ctx.shadowColor === 'rgba(0, 255, 0, 0)';
+    t.done();
+
+- name: 2d.shadow.attributes.shadowColor.invalid
+  code: |
+    ctx.shadowColor = '#00ff00';
+    ctx.shadowColor = 'bogus';
+    @assert ctx.shadowColor === '#00ff00';
+    ctx.shadowColor = '#00ff00';
+    ctx.shadowColor = 'red bogus';
+    @assert ctx.shadowColor === '#00ff00';
+    ctx.shadowColor = '#00ff00';
+    ctx.shadowColor = ctx;
+    @assert ctx.shadowColor === '#00ff00';
+    ctx.shadowColor = '#00ff00';
+    ctx.shadowColor = undefined;
+    @assert ctx.shadowColor === '#00ff00';
+    t.done();
+
+- name: 2d.shadow.enable.off.1
+  desc: Shadows are not drawn when only shadowColor is set
+  code: |
+    ctx.shadowColor = '#f00';
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 100, 50);
+    @assert pixel 50,25 == 0,255,0,255;
+    t.done();
+
+- name: 2d.shadow.enable.off.2
+  desc: Shadows are not drawn when only shadowColor is set
+  code: |
+    ctx.globalCompositeOperation = 'destination-atop';
+    ctx.shadowColor = '#f00';
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 100, 50);
+    @assert pixel 50,25 == 0,255,0,255;
+    t.done();
+
+- name: 2d.shadow.enable.blur
+  desc: Shadows are drawn if shadowBlur is set
+  code: |
+    ctx.globalCompositeOperation = 'destination-atop';
+    ctx.shadowColor = '#0f0';
+    ctx.shadowBlur = 0.1;
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+    @assert pixel 50,25 == 0,255,0,255;
+    t.done();
+
+- name: 2d.shadow.enable.x
+  desc: Shadows are drawn if shadowOffsetX is set
+  code: |
+    ctx.globalCompositeOperation = 'destination-atop';
+    ctx.shadowColor = '#0f0';
+    ctx.shadowOffsetX = 0.1;
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+    @assert pixel 50,25 == 0,255,0,255;
+    t.done();
+
+- name: 2d.shadow.enable.y
+  desc: Shadows are drawn if shadowOffsetY is set
+  code: |
+    ctx.globalCompositeOperation = 'destination-atop';
+    ctx.shadowColor = '#0f0';
+    ctx.shadowOffsetY = 0.1;
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+    @assert pixel 50,25 == 0,255,0,255;
+    t.done();
+
+- name: 2d.shadow.offset.positiveX
+  desc: Shadows can be offset with positive x
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.fillStyle = '#0f0';
+    ctx.shadowColor = '#0f0';
+    ctx.shadowOffsetX = 50;
+    ctx.fillRect(0, 0, 50, 50);
+    @assert pixel 25,25 == 0,255,0,255;
+    @assert pixel 75,25 == 0,255,0,255;
+    t.done();
+
+- name: 2d.shadow.offset.negativeX
+  desc: Shadows can be offset with negative x
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.fillStyle = '#0f0';
+    ctx.shadowColor = '#0f0';
+    ctx.shadowOffsetX = -50;
+    ctx.fillRect(50, 0, 50, 50);
+    @assert pixel 25,25 == 0,255,0,255;
+    @assert pixel 75,25 == 0,255,0,255;
+    t.done();
+
+- name: 2d.shadow.offset.positiveY
+  desc: Shadows can be offset with positive y
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.fillStyle = '#0f0';
+    ctx.shadowColor = '#0f0';
+    ctx.shadowOffsetY = 25;
+    ctx.fillRect(0, 0, 100, 25);
+    @assert pixel 50,12 == 0,255,0,255;
+    @assert pixel 50,37 == 0,255,0,255;
+    t.done();
+
+- name: 2d.shadow.offset.negativeY
+  desc: Shadows can be offset with negative y
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.fillStyle = '#0f0';
+    ctx.shadowColor = '#0f0';
+    ctx.shadowOffsetY = -25;
+    ctx.fillRect(0, 25, 100, 25);
+    @assert pixel 50,12 == 0,255,0,255;
+    @assert pixel 50,37 == 0,255,0,255;
+    t.done();
+
+- name: 2d.shadow.outside
+  desc: Shadows of shapes outside the visible area can be offset onto the visible
+    area
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.shadowColor = '#0f0';
+    ctx.shadowOffsetX = 100;
+    ctx.fillRect(-100, 0, 25, 50);
+    ctx.shadowOffsetX = -100;
+    ctx.fillRect(175, 0, 25, 50);
+    ctx.shadowOffsetX = 0;
+    ctx.shadowOffsetY = 100;
+    ctx.fillRect(25, -100, 50, 25);
+    ctx.shadowOffsetY = -100;
+    ctx.fillRect(25, 125, 50, 25);
+    @assert pixel 12,25 == 0,255,0,255;
+    @assert pixel 87,25 == 0,255,0,255;
+    @assert pixel 50,12 == 0,255,0,255;
+    @assert pixel 50,37 == 0,255,0,255;
+    t.done();
+
+- name: 2d.shadow.clip.1
+  desc: Shadows of clipped shapes are still drawn within the clipping region
+  code: |
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 50, 50);
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(50, 0, 50, 50);
+    ctx.save();
+    ctx.beginPath();
+    ctx.rect(50, 0, 50, 50);
+    ctx.clip();
+    ctx.shadowColor = '#0f0';
+    ctx.shadowOffsetX = 50;
+    ctx.fillRect(0, 0, 50, 50);
+    ctx.restore();
+    @assert pixel 25,25 == 0,255,0,255;
+    @assert pixel 75,25 == 0,255,0,255;
+    t.done();
+
+- name: 2d.shadow.clip.2
+  desc: Shadows are not drawn outside the clipping region
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 50, 50);
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(50, 0, 50, 50);
+    ctx.save();
+    ctx.beginPath();
+    ctx.rect(0, 0, 50, 50);
+    ctx.clip();
+    ctx.shadowColor = '#f00';
+    ctx.shadowOffsetX = 50;
+    ctx.fillRect(0, 0, 50, 50);
+    ctx.restore();
+    @assert pixel 25,25 == 0,255,0,255;
+    @assert pixel 75,25 == 0,255,0,255;
+    t.done();
+
+- name: 2d.shadow.clip.3
+  desc: Shadows of clipped shapes are still drawn within the clipping region
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 50, 50);
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(50, 0, 50, 50);
+    ctx.save();
+    ctx.beginPath();
+    ctx.rect(0, 0, 50, 50);
+    ctx.clip();
+    ctx.fillStyle = '#f00';
+    ctx.shadowColor = '#0f0';
+    ctx.shadowOffsetX = 50;
+    ctx.fillRect(-50, 0, 50, 50);
+    ctx.restore();
+    @assert pixel 25,25 == 0,255,0,255;
+    @assert pixel 75,25 == 0,255,0,255;
+    t.done();
+
+- name: 2d.shadow.stroke.basic
+  desc: Shadows are drawn for strokes
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.strokeStyle = '#f00';
+    ctx.shadowColor = '#0f0';
+    ctx.shadowOffsetY = 50;
+    ctx.beginPath();
+    ctx.lineWidth = 50;
+    ctx.moveTo(0, -25);
+    ctx.lineTo(100, -25);
+    ctx.stroke();
+    @assert pixel 1,25 == 0,255,0,255;
+    @assert pixel 50,25 == 0,255,0,255;
+    @assert pixel 98,25 == 0,255,0,255;
+    t.done();
+
+- name: 2d.shadow.stroke.cap.1
+  desc: Shadows are not drawn for areas outside stroke caps
+  code: |
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.strokeStyle = '#f00';
+    ctx.shadowColor = '#f00';
+    ctx.shadowOffsetY = 50;
+    ctx.beginPath();
+    ctx.lineWidth = 50;
+    ctx.lineCap = 'butt';
+    ctx.moveTo(-50, -25);
+    ctx.lineTo(0, -25);
+    ctx.moveTo(100, -25);
+    ctx.lineTo(150, -25);
+    ctx.stroke();
+    @assert pixel 1,25 == 0,255,0,255;
+    @assert pixel 50,25 == 0,255,0,255;
+    @assert pixel 98,25 == 0,255,0,255;
+    t.done();
+
+- name: 2d.shadow.stroke.cap.2
+  desc: Shadows are drawn for stroke caps
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.strokeStyle = '#f00';
+    ctx.shadowColor = '#0f0';
+    ctx.shadowOffsetY = 50;
+    ctx.beginPath();
+    ctx.lineWidth = 50;
+    ctx.lineCap = 'square';
+    ctx.moveTo(25, -25);
+    ctx.lineTo(75, -25);
+    ctx.stroke();
+    @assert pixel 1,25 == 0,255,0,255;
+    @assert pixel 50,25 == 0,255,0,255;
+    @assert pixel 98,25 == 0,255,0,255;
+    t.done();
+
+- name: 2d.shadow.stroke.join.1
+  desc: Shadows are not drawn for areas outside stroke joins
+  code: |
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.strokeStyle = '#f00';
+    ctx.shadowColor = '#f00';
+    ctx.shadowOffsetX = 100;
+    ctx.lineWidth = 200;
+    ctx.lineJoin = 'bevel';
+    ctx.beginPath();
+    ctx.moveTo(-200, -50);
+    ctx.lineTo(-150, -50);
+    ctx.lineTo(-151, -100);
+    ctx.stroke();
+    @assert pixel 1,1 == 0,255,0,255;
+    @assert pixel 48,48 == 0,255,0,255;
+    @assert pixel 50,25 == 0,255,0,255;
+    @assert pixel 98,48 == 0,255,0,255;
+    t.done();
+
+- name: 2d.shadow.stroke.join.2
+  desc: Shadows are drawn for stroke joins
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 50, 50);
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(50, 0, 50, 50);
+    ctx.strokeStyle = '#f00';
+    ctx.shadowColor = '#0f0';
+    ctx.shadowOffsetX = 100;
+    ctx.lineWidth = 200;
+    ctx.lineJoin = 'miter';
+    ctx.beginPath();
+    ctx.moveTo(-200, -50);
+    ctx.lineTo(-150, -50);
+    ctx.lineTo(-151, -100);
+    ctx.stroke();
+    @assert pixel 1,1 == 0,255,0,255;
+    @assert pixel 48,48 == 0,255,0,255;
+    @assert pixel 50,25 == 0,255,0,255;
+    @assert pixel 98,48 == 0,255,0,255;
+    t.done();
+
+- name: 2d.shadow.stroke.join.3
+  desc: Shadows are drawn for stroke joins respecting miter limit
+  code: |
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.strokeStyle = '#f00';
+    ctx.shadowColor = '#f00';
+    ctx.shadowOffsetX = 100;
+    ctx.lineWidth = 200;
+    ctx.lineJoin = 'miter';
+    ctx.miterLimit = 0.1;
+    ctx.beginPath();
+    ctx.moveTo(-200, -50);
+    ctx.lineTo(-150, -50);
+    ctx.lineTo(-151, -100); // (not an exact right angle, to avoid some other bug in Firefox 3)
+    ctx.stroke();
+    @assert pixel 1,1 == 0,255,0,255;
+    @assert pixel 48,48 == 0,255,0,255;
+    @assert pixel 50,25 == 0,255,0,255;
+    @assert pixel 98,48 == 0,255,0,255;
+    t.done();
+
+- name: 2d.shadow.image.basic
+  desc: Shadows are drawn for images
+  images:
+  - red.png
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.shadowColor = '#0f0';
+    ctx.shadowOffsetY = 50;
+    var promise = new Promise(function(resolve, reject) {
+        var xhr = new XMLHttpRequest();
+        xhr.open("GET", '/images/red.png');
+        xhr.responseType = 'blob';
+        xhr.send();
+        xhr.onload = function() {
+            resolve(xhr.response);
+        };
+    });
+    promise.then(function(response) {
+        createImageBitmap(response).then(bitmap => {
+            ctx.drawImage(bitmap, 0, -50);
+            @assert pixel 50,25 == 0,255,0,255;
+        }, t_fail);
+    }).then(t_pass, t_fail);
+
+- name: 2d.shadow.image.transparent.1
+  desc: Shadows are not drawn for transparent images
+  images:
+  - transparent.png
+  code: |
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.shadowColor = '#f00';
+    ctx.shadowOffsetY = 50;
+    var promise = new Promise(function(resolve, reject) {
+        var xhr = new XMLHttpRequest();
+        xhr.open("GET", '/images/transparent.png');
+        xhr.responseType = 'blob';
+        xhr.send();
+        xhr.onload = function() {
+            resolve(xhr.response);
+        };
+    });
+    promise.then(function(response) {
+        createImageBitmap(response).then(bitmap => {
+            ctx.drawImage(bitmap, 0, -50);
+            @assert pixel 50,25 == 0,255,0,255;
+        }, t_fail);
+    }).then(t_pass, t_fail);
+
+- name: 2d.shadow.image.transparent.2
+  desc: Shadows are not drawn for transparent parts of images
+  images:
+  - redtransparent.png
+  code: |
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 50, 50);
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(50, 0, 50, 50);
+    ctx.shadowOffsetY = 50;
+    ctx.shadowColor = '#0f0';
+    var promise = new Promise(function(resolve, reject) {
+        var xhr = new XMLHttpRequest();
+        xhr.open("GET", '/images/redtransparent.png');
+        xhr.responseType = 'blob';
+        xhr.send();
+        xhr.onload = function() {
+            resolve(xhr.response);
+        };
+    });
+    promise.then(function(response) {
+        createImageBitmap(response).then(bitmap => {
+            ctx.drawImage(bitmap, 50, -50);
+            ctx.shadowColor = '#f00';
+            ctx.drawImage(bitmap, -50, -50);
+            @assert pixel 25,25 == 0,255,0,255;
+            @assert pixel 50,25 == 0,255,0,255;
+            @assert pixel 75,25 == 0,255,0,255;
+        }, t_fail);
+    }).then(t_pass, t_fail);
+
+- name: 2d.shadow.image.alpha
+  desc: Shadows are drawn correctly for partially-transparent images
+  images:
+  - transparent50.png
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.shadowOffsetY = 50;
+    ctx.shadowColor = '#00f';
+    var promise = new Promise(function(resolve, reject) {
+        var xhr = new XMLHttpRequest();
+        xhr.open("GET", '/images/transparent50.png');
+        xhr.responseType = 'blob';
+        xhr.send();
+        xhr.onload = function() {
+            resolve(xhr.response);
+        };
+    });
+    promise.then(function(response) {
+        createImageBitmap(response).then(bitmap => {
+            ctx.drawImage(bitmap, 0, -50);
+            @assert pixel 50,25 ==~ 127,0,127,255;
+        }, t_fail);
+    }).then(t_pass, t_fail);
+
+- name: 2d.shadow.image.section
+  desc: Shadows are not drawn for areas outside image source rectangles
+  images:
+  - redtransparent.png
+  code: |
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.shadowOffsetY = 50;
+    ctx.shadowColor = '#f00';
+    var promise = new Promise(function(resolve, reject) {
+        var xhr = new XMLHttpRequest();
+        xhr.open("GET", '/images/redtransparent.png');
+        xhr.responseType = 'blob';
+        xhr.send();
+        xhr.onload = function() {
+            resolve(xhr.response);
+        };
+    });
+    promise.then(function(response) {
+        createImageBitmap(response).then(bitmap => {
+            ctx.drawImage(bitmap, 50, 0, 50, 50, 0, -50, 50, 50);
+            @assert pixel 25,25 ==~ 0,255,0,255;
+            @assert pixel 50,25 ==~ 0,255,0,255;
+            @assert pixel 75,25 ==~ 0,255,0,255;
+        }, t_fail);
+    }).then(t_pass, t_fail);
+
+- name: 2d.shadow.image.scale
+  desc: Shadows are drawn correctly for scaled images
+  images:
+  - redtransparent.png
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.shadowOffsetY = 50;
+    ctx.shadowColor = '#0f0';
+    var promise = new Promise(function(resolve, reject) {
+        var xhr = new XMLHttpRequest();
+        xhr.open("GET", '/images/redtransparent.png');
+        xhr.responseType = 'blob';
+        xhr.send();
+        xhr.onload = function() {
+            resolve(xhr.response);
+        };
+    });
+    promise.then(function(response) {
+        createImageBitmap(response).then(bitmap => {
+            ctx.drawImage(bitmap, 0, 0, 100, 50, -10, -50, 240, 50);
+            @assert pixel 25,25 ==~ 0,255,0,255;
+            @assert pixel 50,25 ==~ 0,255,0,255;
+            @assert pixel 75,25 ==~ 0,255,0,255;
+        }, t_fail);
+    }).then(t_pass, t_fail);
+
+- name: 2d.shadow.canvas.basic
+  desc: Shadows are drawn for canvases
+  code: |
+    var offscreenCanvas2 = new OffscreenCanvas(100, 50);
+    var ctx2 = offscreenCanvas2.getContext('2d');
+    ctx2.fillStyle = '#f00';
+    ctx2.fillRect(0, 0, 100, 50);
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.shadowColor = '#0f0';
+    ctx.shadowOffsetY = 50;
+    ctx.drawImage(offscreenCanvas2, 0, -50);
+    @assert pixel 50,25 == 0,255,0,255;
+    t.done();
+
+- name: 2d.shadow.canvas.transparent.1
+  desc: Shadows are not drawn for transparent canvases
+  code: |
+    var offscreenCanvas2 = new OffscreenCanvas(100, 50);
+    var ctx2 = offscreenCanvas2.getContext('2d');
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.shadowColor = '#f00';
+    ctx.shadowOffsetY = 50;
+    ctx.drawImage(offscreenCanvas2, 0, -50);
+    @assert pixel 50,25 == 0,255,0,255;
+    t.done();
+
+- name: 2d.shadow.canvas.transparent.2
+  desc: Shadows are not drawn for transparent parts of canvases
+  code: |
+    var offscreenCanvas2 = new OffscreenCanvas(100, 50);
+    var ctx2 = offscreenCanvas2.getContext('2d');
+    ctx2.fillStyle = '#f00';
+    ctx2.fillRect(0, 0, 50, 50);
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 50, 50);
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(50, 0, 50, 50);
+    ctx.shadowOffsetY = 50;
+    ctx.shadowColor = '#0f0';
+    ctx.drawImage(offscreenCanvas2, 50, -50);
+    ctx.shadowColor = '#f00';
+    ctx.drawImage(offscreenCanvas2, -50, -50);
+    @assert pixel 25,25 == 0,255,0,255;
+    @assert pixel 50,25 == 0,255,0,255;
+    @assert pixel 75,25 == 0,255,0,255;
+    t.done();
+
+- name: 2d.shadow.canvas.alpha
+  desc: Shadows are drawn correctly for partially-transparent canvases
+  code: |
+    var offscreenCanvas2 = new OffscreenCanvas(100, 50);
+    var ctx2 = offscreenCanvas2.getContext('2d');
+    ctx2.fillStyle = 'rgba(255, 0, 0, 0.5)';
+    ctx2.fillRect(0, 0, 100, 50);
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.shadowOffsetY = 50;
+    ctx.shadowColor = '#00f';
+    ctx.drawImage(offscreenCanvas2, 0, -50);
+    @assert pixel 50,25 ==~ 127,0,127,255;
+    t.done();
+
+- name: 2d.shadow.pattern.basic
+  desc: Shadows are drawn for fill patterns
+  images:
+  - red.png
+  code: |
+    var promise = new Promise(function(resolve, reject) {
+        var xhr = new XMLHttpRequest();
+        xhr.open("GET", '/images/red.png');
+        xhr.responseType = 'blob';
+        xhr.send();
+        xhr.onload = function() {
+            resolve(xhr.response);
+        };
+    });
+    promise.then(function(response) {
+        createImageBitmap(response).then(bitmap => {
+            var pattern = ctx.createPattern(bitmap, 'repeat');
+            ctx.fillStyle = '#f00';
+            ctx.fillRect(0, 0, 100, 50);
+            ctx.shadowColor = '#0f0';
+            ctx.shadowOffsetY = 50;
+            ctx.fillStyle = pattern;
+            ctx.fillRect(0, -50, 100, 50);
+        }, t_fail);
+    }).then(t_pass, t_fail);
+
+- name: 2d.shadow.pattern.transparent.1
+  desc: Shadows are not drawn for transparent fill patterns
+  # http://bugs.webkit.org/show_bug.cgi?id=15266
+  images:
+  - transparent.png
+  code: |
+    var promise = new Promise(function(resolve, reject) {
+        var xhr = new XMLHttpRequest();
+        xhr.open("GET", '/images/transparent.png');
+        xhr.responseType = 'blob';
+        xhr.send();
+        xhr.onload = function() {
+            resolve(xhr.response);
+        };
+    });
+    promise.then(function(response) {
+        createImageBitmap(response).then(bitmap => {
+            var pattern = ctx.createPattern(bitmap, 'repeat');
+            ctx.fillStyle = '#0f0';
+            ctx.fillRect(0, 0, 100, 50);
+            ctx.shadowColor = '#f00';
+            ctx.shadowOffsetY = 50;
+            ctx.fillStyle = pattern;
+            ctx.fillRect(0, -50, 100, 50);
+        }, t_fail);
+    }).then(t_pass, t_fail);
+
+- name: 2d.shadow.pattern.transparent.2
+  desc: Shadows are not drawn for transparent parts of fill patterns
+  images:
+  - redtransparent.png
+  code: |
+    var promise = new Promise(function(resolve, reject) {
+        var xhr = new XMLHttpRequest();
+        xhr.open("GET", '/images/redtransparent.png');
+        xhr.responseType = 'blob';
+        xhr.send();
+        xhr.onload = function() {
+            resolve(xhr.response);
+        };
+    });
+    promise.then(function(response) {
+        createImageBitmap(response).then(bitmap => {
+            var pattern = ctx.createPattern(bitmap, 'repeat');
+            ctx.fillStyle = '#f00';
+            ctx.fillRect(0, 0, 50, 50);
+            ctx.fillStyle = '#0f0';
+            ctx.fillRect(50, 0, 50, 50);
+            ctx.shadowOffsetY = 50;
+            ctx.shadowColor = '#0f0';
+            ctx.fillStyle = pattern;
+            ctx.fillRect(0, -50, 100, 50);
+            @assert pixel 25,25 == 0,255,0,255;
+            @assert pixel 50,25 == 0,255,0,255;
+            @assert pixel 75,25 == 0,255,0,255;
+        }, t_fail);
+    }).then(t_pass, t_fail);
+
+- name: 2d.shadow.pattern.alpha
+  desc: Shadows are drawn correctly for partially-transparent fill patterns
+  images:
+  - transparent50.png
+  code: |
+    var promise = new Promise(function(resolve, reject) {
+        var xhr = new XMLHttpRequest();
+        xhr.open("GET", '/images/transparent50.png');
+        xhr.responseType = 'blob';
+        xhr.send();
+        xhr.onload = function() {
+            resolve(xhr.response);
+        };
+    });
+    promise.then(function(response) {
+        createImageBitmap(response).then(bitmap => {
+            var pattern = ctx.createPattern(bitmap, 'repeat');
+            ctx.fillStyle = '#f00';
+            ctx.fillRect(0, 0, 100, 50);
+            ctx.shadowOffsetY = 50;
+            ctx.shadowColor = '#00f';
+            ctx.fillStyle = pattern;
+            ctx.fillRect(0, -50, 100, 50);
+        }, t_fail);
+    }).then(t_pass, t_fail);
+
+- name: 2d.shadow.gradient.basic
+  desc: Shadows are drawn for gradient fills
+  # http://bugs.webkit.org/show_bug.cgi?id=15266
+  code: |
+    var gradient = ctx.createLinearGradient(0, 0, 100, 0);
+    gradient.addColorStop(0, '#f00');
+    gradient.addColorStop(1, '#f00');
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.shadowColor = '#0f0';
+    ctx.shadowOffsetY = 50;
+    ctx.fillStyle = gradient;
+    ctx.fillRect(0, -50, 100, 50);
+    @assert pixel 50,25 == 0,255,0,255;
+    t.done();
+
+- name: 2d.shadow.gradient.transparent.1
+  desc: Shadows are not drawn for transparent gradient fills
+  # http://bugs.webkit.org/show_bug.cgi?id=15266
+  code: |
+    var gradient = ctx.createLinearGradient(0, 0, 100, 0);
+    gradient.addColorStop(0, 'rgba(0,0,0,0)');
+    gradient.addColorStop(1, 'rgba(0,0,0,0)');
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.shadowColor = '#f00';
+    ctx.shadowOffsetY = 50;
+    ctx.fillStyle = gradient;
+    ctx.fillRect(0, -50, 100, 50);
+    @assert pixel 50,25 == 0,255,0,255;
+    t.done();
+
+- name: 2d.shadow.gradient.transparent.2
+  desc: Shadows are not drawn for transparent parts of gradient fills
+  code: |
+    var gradient = ctx.createLinearGradient(0, 0, 100, 0);
+    gradient.addColorStop(0, '#f00');
+    gradient.addColorStop(0.499, '#f00');
+    gradient.addColorStop(0.5, 'rgba(0,0,0,0)');
+    gradient.addColorStop(1, 'rgba(0,0,0,0)');
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 50, 50);
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(50, 0, 50, 50);
+    ctx.shadowOffsetY = 50;
+    ctx.shadowColor = '#0f0';
+    ctx.fillStyle = gradient;
+    ctx.fillRect(0, -50, 100, 50);
+    @assert pixel 25,25 == 0,255,0,255;
+    @assert pixel 50,25 == 0,255,0,255;
+    @assert pixel 75,25 == 0,255,0,255;
+    t.done();
+
+- name: 2d.shadow.gradient.alpha
+  desc: Shadows are drawn correctly for partially-transparent gradient fills
+  code: |
+    var gradient = ctx.createLinearGradient(0, 0, 100, 0);
+    gradient.addColorStop(0, 'rgba(255,0,0,0.5)');
+    gradient.addColorStop(1, 'rgba(255,0,0,0.5)');
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.shadowOffsetY = 50;
+    ctx.shadowColor = '#00f';
+    ctx.fillStyle = gradient;
+    ctx.fillRect(0, -50, 100, 50);
+    @assert pixel 50,25 ==~ 127,0,127,255;
+    t.done();
+
+- name: 2d.shadow.transform.1
+  desc: Shadows take account of transformations
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.shadowOffsetY = 50;
+    ctx.shadowColor = '#0f0';
+    ctx.translate(100, 100);
+    ctx.fillRect(-100, -150, 100, 50);
+    @assert pixel 50,25 == 0,255,0,255;
+    t.done();
+
+- name: 2d.shadow.transform.2
+  desc: Shadow offsets are not affected by transformations
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.shadowOffsetY = 50;
+    ctx.shadowColor = '#0f0';
+    ctx.rotate(Math.PI)
+    ctx.fillRect(-100, 0, 100, 50);
+    @assert pixel 50,25 == 0,255,0,255;
+    t.done();
+
+- name: 2d.shadow.alpha.1
+  desc: Shadow color alpha components are used
+  code: |
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.shadowColor = 'rgba(255, 0, 0, 0.01)';
+    ctx.shadowOffsetY = 50;
+    ctx.fillRect(0, -50, 100, 50);
+    @assert pixel 50,25 ==~ 0,255,0,255 +/- 4;
+    t.done();
+
+- name: 2d.shadow.alpha.2
+  desc: Shadow color alpha components are used
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.shadowColor = 'rgba(0, 0, 255, 0.5)';
+    ctx.shadowOffsetY = 50;
+    ctx.fillRect(0, -50, 100, 50);
+    @assert pixel 50,25 ==~ 127,0,127,255;
+    t.done();
+
+- name: 2d.shadow.alpha.3
+  desc: Shadows are affected by globalAlpha
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.fillStyle = '#f00'; // (work around broken Firefox globalAlpha caching)
+    ctx.shadowColor = '#00f';
+    ctx.shadowOffsetY = 50;
+    ctx.globalAlpha = 0.5;
+    ctx.fillRect(0, -50, 100, 50);
+    @assert pixel 50,25 ==~ 127,0,127,255;
+    t.done();
+
+- name: 2d.shadow.alpha.4
+  desc: Shadows with alpha components are correctly affected by globalAlpha
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.fillStyle = '#f00'; // (work around broken Firefox globalAlpha caching)
+    ctx.shadowColor = 'rgba(0, 0, 255, 0.707)';
+    ctx.shadowOffsetY = 50;
+    ctx.globalAlpha = 0.707;
+    ctx.fillRect(0, -50, 100, 50);
+    @assert pixel 50,25 ==~ 127,0,127,255;
+    t.done();
+
+- name: 2d.shadow.alpha.5
+  desc: Shadows of shapes with alpha components are drawn correctly
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.fillStyle = 'rgba(64, 0, 0, 0.5)';
+    ctx.shadowColor = '#00f';
+    ctx.shadowOffsetY = 50;
+    ctx.fillRect(0, -50, 100, 50);
+    @assert pixel 50,25 ==~ 127,0,127,255;
+    t.done();
+
+- name: 2d.shadow.composite.1
+  desc: Shadows are drawn using globalCompositeOperation
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.globalCompositeOperation = 'xor';
+    ctx.shadowColor = '#f00';
+    ctx.shadowOffsetX = 100;
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(-100, 0, 200, 50);
+    @assert pixel 50,25 ==~ 0,255,0,255;
+    t.done();
+
+- name: 2d.shadow.composite.2
+  desc: Shadows are drawn using globalCompositeOperation
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.globalCompositeOperation = 'xor';
+    ctx.shadowColor = '#f00';
+    ctx.shadowBlur = 1;
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(-10, -10, 120, 70);
+    @assert pixel 50,25 ==~ 0,255,0,255;
+    t.done();
+
+- name: 2d.shadow.composite.3
+  desc: Areas outside shadows are drawn correctly with destination-out
+  code: |
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.globalCompositeOperation = 'destination-out';
+    ctx.shadowColor = '#f00';
+    ctx.shadowBlur = 10;
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(200, 0, 100, 50);
+    @assert pixel 5,5 ==~ 0,255,0,255;
+    @assert pixel 50,25 ==~ 0,255,0,255;
+    t.done();
diff --git a/testing/web-platform/tests/html/canvas/tools/yaml/offscreen/text.yaml b/testing/web-platform/tests/html/canvas/tools/yaml/offscreen/text.yaml
new file mode 100644
index 0000000000..784a099aca
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/tools/yaml/offscreen/text.yaml
@@ -0,0 +1,1536 @@
+- name: 2d.text.font.parse.basic
+  code: |
+    ctx.font = '20px serif';
+    @assert ctx.font === '20px serif';
+
+    ctx.font = '20PX   SERIF';
+    @assert ctx.font === '20px serif'; @moz-todo
+    t.done();
+
+- name: 2d.text.font.parse.tiny
+  code: |
+    ctx.font = '1px sans-serif';
+    @assert ctx.font === '1px sans-serif';
+    t.done();
+
+- name: 2d.text.font.parse.complex
+  code: |
+    ctx.font = 'small-caps italic 400 12px/2 Unknown Font, sans-serif';
+    @assert ctx.font === 'italic small-caps 12px "Unknown Font", sans-serif'; @moz-todo
+    t.done();
+
+- name: 2d.text.font.parse.family
+  code: |
+    ctx.font = '20px cursive,fantasy,monospace,sans-serif,serif,UnquotedFont,"QuotedFont\\\\\\","';
+    @assert ctx.font === '20px cursive, fantasy, monospace, sans-serif, serif, UnquotedFont, "QuotedFont\\\\\\","';
+    t.done();
+
+  # TODO:
+  #   2d.text.font.parse.size.absolute
+  #     xx-small x-small small medium large x-large xx-large
+  #   2d.text.font.parse.size.relative
+  #     smaller larger
+  #   2d.text.font.parse.size.length.relative
+  #     em ex px
+  #   2d.text.font.parse.size.length.absolute
+  #     in cm mm pt pc
+
+- name: 2d.text.font.parse.system
+  desc: System fonts must be computed to explicit values
+  code: |
+    ctx.font = 'message-box';
+    @assert ctx.font !== 'message-box';
+    t.done();
+
+- name: 2d.text.font.parse.invalid
+  code: |
+    ctx.font = '20px serif';
+    @assert ctx.font === '20px serif';
+
+    ctx.font = '20px serif';
+    ctx.font = '';
+    @assert ctx.font === '20px serif';
+
+    ctx.font = '20px serif';
+    ctx.font = 'bogus';
+    @assert ctx.font === '20px serif';
+
+    ctx.font = '20px serif';
+    ctx.font = 'inherit';
+    @assert ctx.font === '20px serif';
+
+    ctx.font = '20px serif';
+    ctx.font = '10px {bogus}';
+    @assert ctx.font === '20px serif';
+
+    ctx.font = '20px serif';
+    ctx.font = '10px initial';
+    @assert ctx.font === '20px serif'; @moz-todo
+
+    ctx.font = '20px serif';
+    ctx.font = '10px default';
+    @assert ctx.font === '20px serif'; @moz-todo
+
+    ctx.font = '20px serif';
+    ctx.font = '10px inherit';
+    @assert ctx.font === '20px serif';
+
+    ctx.font = '20px serif';
+    ctx.font = '10px revert';
+    @assert ctx.font === '20px serif';
+
+    ctx.font = '20px serif';
+    ctx.font = 'var(--x)';
+    @assert ctx.font === '20px serif';
+
+    ctx.font = '20px serif';
+    ctx.font = 'var(--x, 10px serif)';
+    @assert ctx.font === '20px serif';
+
+    ctx.font = '20px serif';
+    ctx.font = '1em serif; background: green; margin: 10px';
+    @assert ctx.font === '20px serif';
+    t.done();
+
+- name: 2d.text.font.default
+  code: |
+    @assert ctx.font === '10px sans-serif';
+    t.done();
+
+- name: 2d.text.font.relative_size
+  code: |
+    ctx.font = '1em sans-serif';
+    @assert ctx.font === '10px sans-serif';
+    t.done();
+
+- name: 2d.text.align.valid
+  code: |
+    ctx.textAlign = 'start';
+    @assert ctx.textAlign === 'start';
+
+    ctx.textAlign = 'end';
+    @assert ctx.textAlign === 'end';
+
+    ctx.textAlign = 'left';
+    @assert ctx.textAlign === 'left';
+
+    ctx.textAlign = 'right';
+    @assert ctx.textAlign === 'right';
+
+    ctx.textAlign = 'center';
+    @assert ctx.textAlign === 'center';
+    t.done();
+
+- name: 2d.text.align.invalid
+  code: |
+    ctx.textAlign = 'start';
+    ctx.textAlign = 'bogus';
+    @assert ctx.textAlign === 'start';
+
+    ctx.textAlign = 'start';
+    ctx.textAlign = 'END';
+    @assert ctx.textAlign === 'start';
+
+    ctx.textAlign = 'start';
+    ctx.textAlign = 'end ';
+    @assert ctx.textAlign === 'start';
+
+    ctx.textAlign = 'start';
+    ctx.textAlign = 'end\0';
+    @assert ctx.textAlign === 'start';
+    t.done();
+
+- name: 2d.text.align.default
+  code: |
+    @assert ctx.textAlign === 'start';
+    t.done();
+
+
+- name: 2d.text.baseline.valid
+  code: |
+    ctx.textBaseline = 'top';
+    @assert ctx.textBaseline === 'top';
+
+    ctx.textBaseline = 'hanging';
+    @assert ctx.textBaseline === 'hanging';
+
+    ctx.textBaseline = 'middle';
+    @assert ctx.textBaseline === 'middle';
+
+    ctx.textBaseline = 'alphabetic';
+    @assert ctx.textBaseline === 'alphabetic';
+
+    ctx.textBaseline = 'ideographic';
+    @assert ctx.textBaseline === 'ideographic';
+
+    ctx.textBaseline = 'bottom';
+    @assert ctx.textBaseline === 'bottom';
+    t.done();
+
+- name: 2d.text.baseline.invalid
+  code: |
+    ctx.textBaseline = 'top';
+    ctx.textBaseline = 'bogus';
+    @assert ctx.textBaseline === 'top';
+
+    ctx.textBaseline = 'top';
+    ctx.textBaseline = 'MIDDLE';
+    @assert ctx.textBaseline === 'top';
+
+    ctx.textBaseline = 'top';
+    ctx.textBaseline = 'middle ';
+    @assert ctx.textBaseline === 'top';
+
+    ctx.textBaseline = 'top';
+    ctx.textBaseline = 'middle\0';
+    @assert ctx.textBaseline === 'top';
+    t.done();
+
+- name: 2d.text.baseline.default
+  code: |
+    @assert ctx.textBaseline === 'alphabetic';
+    t.done();
+
+- name: 2d.text.draw.fill.basic
+  desc: fillText draws filled text
+  manual:
+  code: |
+    ctx.fillStyle = '#000';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.fillStyle = '#0f0';
+    ctx.strokeStyle = '#f00';
+    ctx.font = '35px Arial, sans-serif';
+    ctx.fillText('PASS', 5, 35);
+    t.done();
+  expected: &passfill |
+    size 100 50
+    cr.set_source_rgb(0, 0, 0)
+    cr.rectangle(0, 0, 100, 50)
+    cr.fill()
+    cr.set_source_rgb(0, 1, 0)
+    cr.select_font_face("Arial")
+    cr.set_font_size(35)
+    cr.translate(5, 35)
+    cr.text_path("PASS")
+    cr.fill()
+
+- name: 2d.text.draw.fill.unaffected
+  desc: fillText does not start a new path or subpath
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+
+    ctx.moveTo(0, 0);
+    ctx.lineTo(100, 0);
+
+    ctx.font = '35px Arial, sans-serif';
+    ctx.fillText('FAIL', 5, 35);
+
+    ctx.lineTo(100, 50);
+    ctx.lineTo(0, 50);
+    ctx.fillStyle = '#0f0';
+    ctx.fill();
+
+    @assert pixel 50,25 == 0,255,0,255;
+    @assert pixel 5,45 == 0,255,0,255;
+    t.done();
+  expected: green
+
+- name: 2d.text.draw.fill.rtl
+  desc: fillText respects Right-To-Left Override characters
+  manual:
+  code: |
+    ctx.fillStyle = '#000';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.fillStyle = '#0f0';
+    ctx.strokeStyle = '#f00';
+    ctx.font = '35px Arial, sans-serif';
+    ctx.fillText('\u202eFAIL \xa0 \xa0 SSAP', 5, 35);
+    t.done();
+  expected: *passfill
+- name: 2d.text.draw.fill.maxWidth.large
+  desc: fillText handles maxWidth correctly
+  manual:
+  code: |
+    ctx.fillStyle = '#000';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.fillStyle = '#0f0';
+    ctx.font = '35px Arial, sans-serif';
+    ctx.fillText('PASS', 5, 35, 200);
+    t.done();
+  expected: *passfill
+- name: 2d.text.draw.fill.maxWidth.small
+  desc: fillText handles maxWidth correctly
+  code: |
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.fillStyle = '#f00';
+    ctx.font = '35px Arial, sans-serif';
+    ctx.fillText('fail fail fail fail fail', -100, 35, 90);
+    _assertGreen(ctx, 100, 50);
+    t.done();
+  expected: green
+
+- name: 2d.text.draw.fill.maxWidth.zero
+  desc: fillText handles maxWidth correctly
+  code: |
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.fillStyle = '#f00';
+    ctx.font = '35px Arial, sans-serif';
+    ctx.fillText('fail fail fail fail fail', 5, 35, 0);
+    _assertGreen(ctx, 100, 50);
+    t.done();
+  expected: green
+  timeout: long
+
+- name: 2d.text.draw.fill.maxWidth.negative
+  desc: fillText handles maxWidth correctly
+  code: |
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.fillStyle = '#f00';
+    ctx.font = '35px Arial, sans-serif';
+    ctx.fillText('fail fail fail fail fail', 5, 35, -1);
+    _assertGreen(ctx, 100, 50);
+    t.done();
+  expected: green
+
+- name: 2d.text.draw.fill.maxWidth.NaN
+  desc: fillText handles maxWidth correctly
+  code: |
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.fillStyle = '#f00';
+    ctx.font = '35px Arial, sans-serif';
+    ctx.fillText('fail fail fail fail fail', 5, 35, NaN);
+    _assertGreen(ctx, 100, 50);
+    t.done();
+  expected: green
+
+- name: 2d.text.draw.stroke.basic
+  desc: strokeText draws stroked text
+  manual:
+  code: |
+    ctx.fillStyle = '#000';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.strokeStyle = '#0f0';
+    ctx.fillStyle = '#f00';
+    ctx.lineWidth = 1;
+    ctx.font = '35px Arial, sans-serif';
+    ctx.strokeText('PASS', 5, 35);
+    t.done();
+  expected: |
+    size 100 50
+    cr.set_source_rgb(0, 0, 0)
+    cr.rectangle(0, 0, 100, 50)
+    cr.fill()
+    cr.set_source_rgb(0, 1, 0)
+    cr.select_font_face("Arial")
+    cr.set_font_size(35)
+    cr.set_line_width(1)
+    cr.translate(5, 35)
+    cr.text_path("PASS")
+    cr.stroke()
+
+- name: 2d.text.draw.stroke.unaffected
+  desc: strokeText does not start a new path or subpath
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+
+    ctx.moveTo(0, 0);
+    ctx.lineTo(100, 0);
+
+    ctx.font = '35px Arial, sans-serif';
+    ctx.strokeStyle = '#f00';
+    ctx.strokeText('FAIL', 5, 35);
+
+    ctx.lineTo(100, 50);
+    ctx.lineTo(0, 50);
+    ctx.fillStyle = '#0f0';
+    ctx.fill();
+
+    @assert pixel 50,25 == 0,255,0,255;
+    @assert pixel 5,45 == 0,255,0,255;
+    t.done();
+  expected: green
+
+- name: 2d.text.draw.kern.consistent
+  desc: Stroked and filled text should have exactly the same kerning so it overlaps
+  manual:
+  code: |
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.fillStyle = '#f00';
+    ctx.strokeStyle = '#0f0';
+    ctx.lineWidth = 3;
+    ctx.font = '20px Arial, sans-serif';
+    ctx.fillText('VAVAVAVAVAVAVA', -50, 25);
+    ctx.fillText('ToToToToToToTo', -50, 45);
+    ctx.strokeText('VAVAVAVAVAVAVA', -50, 25);
+    ctx.strokeText('ToToToToToToTo', -50, 45);
+    t.done();
+  expected: green
+
+# CanvasTest is:
+#   A = (0, 0) to (1em, 0.75em)       (above baseline)
+#   B = (0, 0) to (1em, -0.25em)      (below baseline)
+#   C = (0, -0.25em) to (1em, 0.75em) (the em square) plus some Xs above and below
+#   D = (0, -0.25em) to (1em, 0.75em) (the em square) plus some Xs left and right
+#   E = (0, -0.25em) to (1em, 0.75em) (the em square)
+#   space = empty, 1em wide
+#
+# At 50px, "E" will fill the canvas vertically
+# At 67px, "A" will fill the canvas vertically
+#
+# Ideographic baseline  is 0.125em above alphabetic
+# Mathematical baseline is 0.375em above alphabetic
+# Hanging baseline      is 0.500em above alphabetic
+
+- name: 2d.text.draw.fill.maxWidth.fontface
+  desc: fillText works on @font-face fonts
+  fonts:
+  - CanvasTest
+  code: |
+    var f = new FontFace("CanvasTest", "url('/fonts/CanvasTest.ttf')");
+    let fonts = (self.fonts ? self.fonts : document.fonts);
+    f.load();
+    fonts.add(f);
+    fonts.ready.then(function() {
+        ctx.font = '50px CanvasTest';
+        ctx.fillStyle = '#0f0';
+        ctx.fillRect(0, 0, 100, 50);
+        ctx.fillStyle = '#f00';
+        ctx.fillText('EEEE', -50, 37.5, 40);
+        @assert pixel 5,5 ==~ 0,255,0,255;
+        @assert pixel 95,5 ==~ 0,255,0,255;
+        @assert pixel 25,25 ==~ 0,255,0,255;
+        @assert pixel 75,25 ==~ 0,255,0,255;
+      }).then(t_pass, t_fail);
+  expected: green
+
+- name: 2d.text.draw.fill.maxWidth.bound
+  desc: fillText handles maxWidth based on line size, not bounding box size
+  fonts:
+  - CanvasTest
+  code: |
+    var f = new FontFace("CanvasTest", "url('/fonts/CanvasTest.ttf')");
+    let fonts = (self.fonts ? self.fonts : document.fonts);
+    f.load();
+    fonts.add(f);
+    fonts.ready.then(function() {
+        ctx.font = '50px CanvasTest';
+        ctx.fillStyle = '#f00';
+        ctx.fillRect(0, 0, 100, 50);
+        ctx.fillStyle = '#0f0';
+        ctx.fillText('DD', 0, 37.5, 100);
+        @assert pixel 5,5 ==~ 0,255,0,255;
+        @assert pixel 95,5 ==~ 0,255,0,255;
+        @assert pixel 25,25 ==~ 0,255,0,255;
+        @assert pixel 75,25 ==~ 0,255,0,255;
+      }).then(t_pass, t_fail);
+  expected: green
+
+- name: 2d.text.draw.fontface
+  fonts:
+  - CanvasTest
+  code: |
+    var f = new FontFace("CanvasTest", "url('/fonts/CanvasTest.ttf')");
+    let fonts = (self.fonts ? self.fonts : document.fonts);
+    f.load();
+    fonts.add(f);
+    fonts.ready.then(function() {
+        ctx.font = '67px CanvasTest';
+        ctx.fillStyle = '#f00';
+        ctx.fillRect(0, 0, 100, 50);
+        ctx.fillStyle = '#0f0';
+        ctx.fillText('AA', 0, 50);
+        @assert pixel 5,5 ==~ 0,255,0,255;
+        @assert pixel 95,5 ==~ 0,255,0,255;
+        @assert pixel 25,25 ==~ 0,255,0,255;
+        @assert pixel 75,25 ==~ 0,255,0,255;
+      }).then(t_pass, t_fail);
+  expected: green
+
+- name: 2d.text.draw.fontface.repeat
+  desc: Draw with the font immediately, then wait a bit until and draw again. (This
+    crashes some version of WebKit.)
+  fonts:
+  - CanvasTest
+  fonthack: 0
+  code: |
+    var f = new FontFace("CanvasTest", "url('/fonts/CanvasTest.ttf')");
+    let fonts = (self.fonts ? self.fonts : document.fonts);
+    f.load();
+    fonts.add(f);
+    fonts.ready.then(function() {
+        ctx.fillStyle = '#f00';
+        ctx.fillRect(0, 0, 100, 50);
+        ctx.font = '67px CanvasTest';
+        ctx.fillStyle = '#0f0';
+        ctx.fillText('AA', 0, 50);
+        ctx.fillText('AA', 0, 50);
+        @assert pixel 5,5 ==~ 0,255,0,255;
+        @assert pixel 95,5 ==~ 0,255,0,255;
+        @assert pixel 25,25 ==~ 0,255,0,255;
+        @assert pixel 75,25 ==~ 0,255,0,255;
+      }).then(t_pass, t_fail);
+  expected: green
+
+- name: 2d.text.draw.fontface.notinpage
+  desc: '@font-face fonts should work even if they are not used in the page'
+  fonts:
+  - CanvasTest
+  fonthack: 0
+  code: |
+    var f = new FontFace("CanvasTest", "url('/fonts/CanvasTest.ttf')");
+    let fonts = (self.fonts ? self.fonts : document.fonts);
+    f.load();
+    fonts.add(f);
+    fonts.ready.then(function() {
+        ctx.font = '67px CanvasTest';
+        ctx.fillStyle = '#f00';
+        ctx.fillRect(0, 0, 100, 50);
+        ctx.fillStyle = '#0f0';
+        ctx.fillText('AA', 0, 50);
+        @assert pixel 5,5 ==~ 0,255,0,255; @moz-todo
+        @assert pixel 95,5 ==~ 0,255,0,255; @moz-todo
+        @assert pixel 25,25 ==~ 0,255,0,255; @moz-todo
+        @assert pixel 75,25 ==~ 0,255,0,255; @moz-todo
+      }).then(t_pass, t_fail);
+  expected: green
+
+- name: 2d.text.draw.baseline.top
+  desc: textBaseline top is the top of the em square (not the bounding box)
+  fonts:
+  - CanvasTest
+  code: |
+    var f = new FontFace("CanvasTest", "url('/fonts/CanvasTest.ttf')");
+    let fonts = (self.fonts ? self.fonts : document.fonts);
+    f.load();
+    fonts.add(f);
+    fonts.ready.then(function() {
+        ctx.font = '50px CanvasTest';
+        ctx.fillStyle = '#f00';
+        ctx.fillRect(0, 0, 100, 50);
+        ctx.fillStyle = '#0f0';
+        ctx.textBaseline = 'top';
+        ctx.fillText('CC', 0, 0);
+        @assert pixel 5,5 ==~ 0,255,0,255;
+        @assert pixel 95,5 ==~ 0,255,0,255;
+        @assert pixel 25,25 ==~ 0,255,0,255;
+        @assert pixel 75,25 ==~ 0,255,0,255;
+        @assert pixel 5,45 ==~ 0,255,0,255;
+        @assert pixel 95,45 ==~ 0,255,0,255;
+      }).then(t_pass, t_fail);
+  expected: green
+
+- name: 2d.text.draw.baseline.bottom
+  desc: textBaseline bottom is the bottom of the em square (not the bounding box)
+  fonts:
+  - CanvasTest
+  code: |
+    var f = new FontFace("CanvasTest", "url('/fonts/CanvasTest.ttf')");
+    let fonts = (self.fonts ? self.fonts : document.fonts);
+    f.load();
+    fonts.add(f);
+    fonts.ready.then(function() {
+        ctx.font = '50px CanvasTest';
+        ctx.fillStyle = '#f00';
+        ctx.fillRect(0, 0, 100, 50);
+        ctx.fillStyle = '#0f0';
+        ctx.textBaseline = 'bottom';
+        ctx.fillText('CC', 0, 50);
+        @assert pixel 5,5 ==~ 0,255,0,255;
+        @assert pixel 95,5 ==~ 0,255,0,255;
+        @assert pixel 25,25 ==~ 0,255,0,255;
+        @assert pixel 75,25 ==~ 0,255,0,255;
+        @assert pixel 5,45 ==~ 0,255,0,255;
+        @assert pixel 95,45 ==~ 0,255,0,255;
+      }).then(t_pass, t_fail);
+  expected: green
+
+- name: 2d.text.draw.baseline.middle
+  desc: textBaseline middle is the middle of the em square (not the bounding box)
+  fonts:
+  - CanvasTest
+  code: |
+    var f = new FontFace("CanvasTest", "url('/fonts/CanvasTest.ttf')");
+    let fonts = (self.fonts ? self.fonts : document.fonts);
+    f.load();
+    fonts.add(f);
+    fonts.ready.then(function() {
+        ctx.font = '50px CanvasTest';
+        ctx.fillStyle = '#f00';
+        ctx.fillRect(0, 0, 100, 50);
+        ctx.fillStyle = '#0f0';
+        ctx.textBaseline = 'middle';
+        ctx.fillText('CC', 0, 25);
+        @assert pixel 5,5 ==~ 0,255,0,255;
+        @assert pixel 95,5 ==~ 0,255,0,255;
+        @assert pixel 25,25 ==~ 0,255,0,255;
+        @assert pixel 75,25 ==~ 0,255,0,255;
+        @assert pixel 5,45 ==~ 0,255,0,255;
+        @assert pixel 95,45 ==~ 0,255,0,255;
+      }).then(t_pass, t_fail);
+  expected: green
+
+- name: 2d.text.draw.baseline.alphabetic
+  fonts:
+  - CanvasTest
+  code: |
+    var f = new FontFace("CanvasTest", "url('/fonts/CanvasTest.ttf')");
+    let fonts = (self.fonts ? self.fonts : document.fonts);
+    f.load();
+    fonts.add(f);
+    fonts.ready.then(function() {
+        ctx.font = '50px CanvasTest';
+        ctx.fillStyle = '#f00';
+        ctx.fillRect(0, 0, 100, 50);
+        ctx.fillStyle = '#0f0';
+        ctx.textBaseline = 'alphabetic';
+        ctx.fillText('CC', 0, 37.5);
+        @assert pixel 5,5 ==~ 0,255,0,255;
+        @assert pixel 95,5 ==~ 0,255,0,255;
+        @assert pixel 25,25 ==~ 0,255,0,255;
+        @assert pixel 75,25 ==~ 0,255,0,255;
+        @assert pixel 5,45 ==~ 0,255,0,255;
+        @assert pixel 95,45 ==~ 0,255,0,255;
+      }).then(t_pass, t_fail);
+  expected: green
+
+- name: 2d.text.draw.baseline.ideographic
+  fonts:
+  - CanvasTest
+  code: |
+    var f = new FontFace("CanvasTest", "url('/fonts/CanvasTest.ttf')");
+    let fonts = (self.fonts ? self.fonts : document.fonts);
+    f.load();
+    fonts.add(f);
+    fonts.ready.then(function() {
+        ctx.font = '50px CanvasTest';
+        ctx.fillStyle = '#f00';
+        ctx.fillRect(0, 0, 100, 50);
+        ctx.fillStyle = '#0f0';
+        ctx.textBaseline = 'ideographic';
+        ctx.fillText('CC', 0, 31.25);
+        @assert pixel 5,5 ==~ 0,255,0,255;
+        @assert pixel 95,5 ==~ 0,255,0,255;
+        @assert pixel 25,25 ==~ 0,255,0,255;
+        @assert pixel 75,25 ==~ 0,255,0,255;
+        @assert pixel 5,45 ==~ 0,255,0,255; @moz-todo
+        @assert pixel 95,45 ==~ 0,255,0,255; @moz-todo
+      }).then(t_pass, t_fail);
+  expected: green
+
+- name: 2d.text.draw.baseline.hanging
+  fonts:
+  - CanvasTest
+  code: |
+    var f = new FontFace("CanvasTest", "url('/fonts/CanvasTest.ttf')");
+    let fonts = (self.fonts ? self.fonts : document.fonts);
+    f.load();
+    fonts.add(f);
+    fonts.ready.then(function() {
+        ctx.font = '50px CanvasTest';
+        ctx.fillStyle = '#f00';
+        ctx.fillRect(0, 0, 100, 50);
+        ctx.fillStyle = '#0f0';
+        ctx.textBaseline = 'hanging';
+        ctx.fillText('CC', 0, 12.5);
+        @assert pixel 5,5 ==~ 0,255,0,255; @moz-todo
+        @assert pixel 95,5 ==~ 0,255,0,255; @moz-todo
+        @assert pixel 25,25 ==~ 0,255,0,255;
+        @assert pixel 75,25 ==~ 0,255,0,255;
+        @assert pixel 5,45 ==~ 0,255,0,255;
+        @assert pixel 95,45 ==~ 0,255,0,255;
+      }).then(t_pass, t_fail);
+  expected: green
+
+- name: 2d.text.draw.align.left
+  desc: textAlign left is the left of the first em square (not the bounding box)
+  fonts:
+  - CanvasTest
+  code: |
+    var f = new FontFace("CanvasTest", "url('/fonts/CanvasTest.ttf')");
+    let fonts = (self.fonts ? self.fonts : document.fonts);
+    f.load();
+    fonts.add(f);
+    fonts.ready.then(function() {
+        ctx.font = '50px CanvasTest';
+        ctx.fillStyle = '#f00';
+        ctx.fillRect(0, 0, 100, 50);
+        ctx.fillStyle = '#0f0';
+        ctx.textAlign = 'left';
+        ctx.fillText('DD', 0, 37.5);
+        @assert pixel 5,5 ==~ 0,255,0,255;
+        @assert pixel 95,5 ==~ 0,255,0,255;
+        @assert pixel 25,25 ==~ 0,255,0,255;
+        @assert pixel 75,25 ==~ 0,255,0,255;
+        @assert pixel 5,45 ==~ 0,255,0,255;
+        @assert pixel 95,45 ==~ 0,255,0,255;
+      }).then(t_pass, t_fail);
+  expected: green
+
+- name: 2d.text.draw.align.right
+  desc: textAlign right is the right of the last em square (not the bounding box)
+  fonts:
+  - CanvasTest
+  code: |
+    var f = new FontFace("CanvasTest", "url('/fonts/CanvasTest.ttf')");
+    let fonts = (self.fonts ? self.fonts : document.fonts);
+    f.load();
+    fonts.add(f);
+    fonts.ready.then(function() {
+        ctx.font = '50px CanvasTest';
+        ctx.fillStyle = '#f00';
+        ctx.fillRect(0, 0, 100, 50);
+        ctx.fillStyle = '#0f0';
+        ctx.textAlign = 'right';
+        ctx.fillText('DD', 100, 37.5);
+        @assert pixel 5,5 ==~ 0,255,0,255;
+        @assert pixel 95,5 ==~ 0,255,0,255;
+        @assert pixel 25,25 ==~ 0,255,0,255;
+        @assert pixel 75,25 ==~ 0,255,0,255;
+        @assert pixel 5,45 ==~ 0,255,0,255;
+        @assert pixel 95,45 ==~ 0,255,0,255;
+      }).then(t_pass, t_fail);
+  expected: green
+
+- name: 2d.text.draw.align.start.ltr
+  desc: textAlign start with ltr is the left edge
+  fonts:
+  - CanvasTest
+  code: |
+    var f = new FontFace("CanvasTest", "url('/fonts/CanvasTest.ttf')");
+    let fonts = (self.fonts ? self.fonts : document.fonts);
+    f.load();
+    fonts.add(f);
+    fonts.ready.then(function() {
+        ctx.font = '50px CanvasTest';
+        ctx.direction = 'ltr';
+        ctx.fillStyle = '#f00';
+        ctx.fillRect(0, 0, 100, 50);
+        ctx.fillStyle = '#0f0';
+        ctx.textAlign = 'start';
+        ctx.fillText('DD', 0, 37.5);
+        @assert pixel 5,5 ==~ 0,255,0,255;
+        @assert pixel 95,5 ==~ 0,255,0,255;
+        @assert pixel 25,25 ==~ 0,255,0,255;
+        @assert pixel 75,25 ==~ 0,255,0,255;
+        @assert pixel 5,45 ==~ 0,255,0,255;
+        @assert pixel 95,45 ==~ 0,255,0,255;
+      }).then(t_pass, t_fail);
+  expected: green
+
+- name: 2d.text.draw.align.start.rtl
+  desc: textAlign start with rtl is the right edge
+  fonts:
+  - CanvasTest
+  code: |
+    var f = new FontFace("CanvasTest", "url('/fonts/CanvasTest.ttf')");
+    let fonts = (self.fonts ? self.fonts : document.fonts);
+    f.load();
+    fonts.add(f);
+    fonts.ready.then(function() {
+        ctx.font = '50px CanvasTest';
+        ctx.direction = 'rtl';
+        ctx.fillStyle = '#f00';
+        ctx.fillRect(0, 0, 100, 50);
+        ctx.fillStyle = '#0f0';
+        ctx.textAlign = 'start';
+        ctx.fillText('DD', 100, 37.5);
+        @assert pixel 5,5 ==~ 0,255,0,255;
+        @assert pixel 95,5 ==~ 0,255,0,255;
+        @assert pixel 25,25 ==~ 0,255,0,255;
+        @assert pixel 75,25 ==~ 0,255,0,255;
+        @assert pixel 5,45 ==~ 0,255,0,255;
+        @assert pixel 95,45 ==~ 0,255,0,255;
+      }).then(t_pass, t_fail);
+  expected: green
+
+- name: 2d.text.draw.align.end.ltr
+  desc: textAlign end with ltr is the right edge
+  fonts:
+  - CanvasTest
+  code: |
+    var f = new FontFace("CanvasTest", "url('/fonts/CanvasTest.ttf')");
+    let fonts = (self.fonts ? self.fonts : document.fonts);
+    f.load();
+    fonts.add(f);
+    fonts.ready.then(function() {
+        ctx.font = '50px CanvasTest';
+        ctx.direction = 'ltr';
+        ctx.fillStyle = '#f00';
+        ctx.fillRect(0, 0, 100, 50);
+        ctx.fillStyle = '#0f0';
+        ctx.textAlign = 'end';
+        ctx.fillText('DD', 100, 37.5);
+        @assert pixel 5,5 ==~ 0,255,0,255;
+        @assert pixel 95,5 ==~ 0,255,0,255;
+        @assert pixel 25,25 ==~ 0,255,0,255;
+        @assert pixel 75,25 ==~ 0,255,0,255;
+        @assert pixel 5,45 ==~ 0,255,0,255;
+        @assert pixel 95,45 ==~ 0,255,0,255;
+      }).then(t_pass, t_fail);
+  expected: green
+
+- name: 2d.text.draw.align.end.rtl
+  desc: textAlign end with rtl is the left edge
+  fonts:
+  - CanvasTest
+  code: |
+    var f = new FontFace("CanvasTest", "url('/fonts/CanvasTest.ttf')");
+    let fonts = (self.fonts ? self.fonts : document.fonts);
+    f.load();
+    fonts.add(f);
+    fonts.ready.then(function() {
+        ctx.font = '50px CanvasTest';
+        ctx.direction = 'rtl';
+        ctx.fillStyle = '#f00';
+        ctx.fillRect(0, 0, 100, 50);
+        ctx.fillStyle = '#0f0';
+        ctx.textAlign = 'end';
+        ctx.fillText('DD', 0, 37.5);
+        @assert pixel 5,5 ==~ 0,255,0,255;
+        @assert pixel 95,5 ==~ 0,255,0,255;
+        @assert pixel 25,25 ==~ 0,255,0,255;
+        @assert pixel 75,25 ==~ 0,255,0,255;
+        @assert pixel 5,45 ==~ 0,255,0,255;
+        @assert pixel 95,45 ==~ 0,255,0,255;
+      }).then(t_pass, t_fail);
+  expected: green
+
+- name: 2d.text.draw.align.center
+  desc: textAlign center is the center of the em squares (not the bounding box)
+  fonts:
+  - CanvasTest
+  code: |
+    var f = new FontFace("CanvasTest", "url('/fonts/CanvasTest.ttf')");
+    let fonts = (self.fonts ? self.fonts : document.fonts);
+    f.load();
+    fonts.add(f);
+    fonts.ready.then(function() {
+        ctx.font = '50px CanvasTest';
+        ctx.fillStyle = '#f00';
+        ctx.fillRect(0, 0, 100, 50);
+        ctx.fillStyle = '#0f0';
+        ctx.textAlign = 'center';
+        ctx.fillText('DD', 50, 37.5);
+        @assert pixel 5,5 ==~ 0,255,0,255;
+        @assert pixel 95,5 ==~ 0,255,0,255;
+        @assert pixel 25,25 ==~ 0,255,0,255;
+        @assert pixel 75,25 ==~ 0,255,0,255;
+        @assert pixel 5,45 ==~ 0,255,0,255;
+        @assert pixel 95,45 ==~ 0,255,0,255;
+      }).then(t_pass, t_fail);
+  expected: green
+
+
+- name: 2d.text.draw.space.basic
+  desc: U+0020 is rendered the correct size (1em wide)
+  fonts:
+  - CanvasTest
+  code: |
+    var f = new FontFace("CanvasTest", "url('/fonts/CanvasTest.ttf')");
+    let fonts = (self.fonts ? self.fonts : document.fonts);
+    f.load();
+    fonts.add(f);
+    fonts.ready.then(function() {
+        ctx.font = '50px CanvasTest';
+        ctx.fillStyle = '#f00';
+        ctx.fillRect(0, 0, 100, 50);
+        ctx.fillStyle = '#0f0';
+        ctx.fillText('E EE', -100, 37.5);
+        @assert pixel 25,25 ==~ 0,255,0,255;
+        @assert pixel 75,25 ==~ 0,255,0,255;
+      }).then(t_pass, t_fail);
+  expected: green
+
+- name: 2d.text.draw.space.collapse.space
+  desc: Space characters are converted to U+0020, and collapsed (per CSS)
+  fonts:
+  - CanvasTest
+  code: |
+    var f = new FontFace("CanvasTest", "url('/fonts/CanvasTest.ttf')");
+    let fonts = (self.fonts ? self.fonts : document.fonts);
+    f.load();
+    fonts.add(f);
+    fonts.ready.then(function() {
+        ctx.font = '50px CanvasTest';
+        ctx.fillStyle = '#f00';
+        ctx.fillRect(0, 0, 100, 50);
+        ctx.fillStyle = '#0f0';
+        ctx.fillText('E  EE', -100, 37.5);
+        @assert pixel 25,25 ==~ 0,255,0,255; @moz-todo
+        @assert pixel 75,25 ==~ 0,255,0,255;
+      }).then(t_pass, t_fail);
+  expected: green
+
+- name: 2d.text.draw.space.collapse.other
+  desc: Space characters are converted to U+0020, and collapsed (per CSS)
+  fonts:
+  - CanvasTest
+  code: |
+    var f = new FontFace("CanvasTest", "url('/fonts/CanvasTest.ttf')");
+    let fonts = (self.fonts ? self.fonts : document.fonts);
+    f.load();
+    fonts.add(f);
+    fonts.ready.then(function() {
+        ctx.font = '50px CanvasTest';
+        ctx.fillStyle = '#f00';
+        ctx.fillRect(0, 0, 100, 50);
+        ctx.fillStyle = '#0f0';
+        ctx.fillText('E \x09\x0a\x0c\x0d  \x09\x0a\x0c\x0dEE', -100, 37.5);
+        @assert pixel 25,25 ==~ 0,255,0,255; @moz-todo
+        @assert pixel 75,25 ==~ 0,255,0,255; @moz-todo
+      }).then(t_pass, t_fail);
+  expected: green
+
+- name: 2d.text.draw.space.collapse.nonspace
+  desc: Non-space characters are not converted to U+0020 and collapsed
+  fonts:
+  - CanvasTest
+  code: |
+    var f = new FontFace("CanvasTest", "url('/fonts/CanvasTest.ttf')");
+    let fonts = (self.fonts ? self.fonts : document.fonts);
+    f.load();
+    fonts.add(f);
+    fonts.ready.then(function() {
+        ctx.font = '50px CanvasTest';
+        ctx.fillStyle = '#f00';
+        ctx.fillRect(0, 0, 100, 50);
+        ctx.fillStyle = '#0f0';
+        ctx.fillText('E\x0b EE', -150, 37.5);
+        @assert pixel 25,25 ==~ 0,255,0,255;
+        @assert pixel 75,25 ==~ 0,255,0,255;
+      }).then(t_pass, t_fail);
+  expected: green
+
+- name: 2d.text.draw.space.collapse.start
+  desc: Space characters at the start of a line are collapsed (per CSS)
+  fonts:
+  - CanvasTest
+  code: |
+    var f = new FontFace("CanvasTest", "url('/fonts/CanvasTest.ttf')");
+    let fonts = (self.fonts ? self.fonts : document.fonts);
+    f.load();
+    fonts.add(f);
+    fonts.ready.then(function() {
+        ctx.font = '50px CanvasTest';
+        ctx.fillStyle = '#f00';
+        ctx.fillRect(0, 0, 100, 50);
+        ctx.fillStyle = '#0f0';
+        ctx.fillText(' EE', 0, 37.5);
+        @assert pixel 25,25 ==~ 0,255,0,255; @moz-todo
+        @assert pixel 75,25 ==~ 0,255,0,255;
+      }).then(t_pass, t_fail);
+  expected: green
+
+- name: 2d.text.draw.space.collapse.end
+  desc: Space characters at the end of a line are collapsed (per CSS)
+  fonts:
+  - CanvasTest
+  code: |
+    var f = new FontFace("CanvasTest", "url('/fonts/CanvasTest.ttf')");
+    let fonts = (self.fonts ? self.fonts : document.fonts);
+    f.load();
+    fonts.add(f);
+    fonts.ready.then(function() {
+        ctx.font = '50px CanvasTest';
+        ctx.fillStyle = '#f00';
+        ctx.fillRect(0, 0, 100, 50);
+        ctx.fillStyle = '#0f0';
+        ctx.textAlign = 'right';
+        ctx.fillText('EE ', 100, 37.5);
+        @assert pixel 25,25 ==~ 0,255,0,255;
+        @assert pixel 75,25 ==~ 0,255,0,255; @moz-todo
+      }).then(t_pass, t_fail);
+  expected: green
+
+- name: 2d.text.measure.width.basic
+  desc: The width of character is same as font used for OffscreenCanvas
+  fonts:
+  - CanvasTest
+  code: |
+    var f = new FontFace("CanvasTest", "url('/fonts/CanvasTest.ttf')");
+    let fonts = (self.fonts ? self.fonts : document.fonts);
+    f.load();
+    fonts.add(f);
+    fonts.ready.then(function() {
+        ctx.font = '50px CanvasTest';
+        @assert ctx.measureText('A').width === 50;
+        @assert ctx.measureText('AA').width === 100;
+        @assert ctx.measureText('ABCD').width === 200;
+
+        ctx.font = '100px CanvasTest';
+        @assert ctx.measureText('A').width === 100;
+    }).then(t_pass, t_fail);
+
+- name: 2d.text.measure.width.empty
+  desc: The empty string has zero width for OffscreenCanvas
+  fonts:
+  - CanvasTest
+  code: |
+    var f = new FontFace("CanvasTest", "url('/fonts/CanvasTest.ttf')");
+    let fonts = (self.fonts ? self.fonts : document.fonts);
+    f.load();
+    fonts.add(f);
+    fonts.ready.then(function() {
+        ctx.font = '50px CanvasTest';
+        @assert ctx.measureText("").width === 0;
+    }).then(t_pass, t_fail);
+
+- name: 2d.text.measure.width.space
+  desc: Space characters are converted to U+0020 and collapsed (per CSS) for OffscreenCanvas
+  fonts:
+  - CanvasTest
+  code: |
+    var f = new FontFace("CanvasTest", "url('/fonts/CanvasTest.ttf')");
+    let fonts = (self.fonts ? self.fonts : document.fonts);
+    f.load();
+    fonts.add(f);
+    fonts.ready.then(function() {
+        ctx.font = '50px CanvasTest';
+        @assert ctx.measureText('A B').width === 150;
+        @assert ctx.measureText('A  B').width === 200;
+        @assert ctx.measureText('A \x09\x0a\x0c\x0d  \x09\x0a\x0c\x0dB').width === 150; @moz-todo
+        @assert ctx.measureText('A \x0b B').width >= 200;
+
+        @assert ctx.measureText(' AB').width === 100; @moz-todo
+        @assert ctx.measureText('AB ').width === 100; @moz-todo
+    }).then(t_pass, t_fail);
+
+- name: 2d.text.measure.advances
+  desc: Testing width advances for OffscreenCanvas
+  fonts:
+  - CanvasTest
+  code: |
+    var f = new FontFace("CanvasTest", "url('/fonts/CanvasTest.ttf')");
+    let fonts = (self.fonts ? self.fonts : document.fonts);
+    f.load();
+    fonts.add(f);
+    fonts.ready.then(function() {
+        ctx.font = '50px CanvasTest';
+        ctx.direction = 'ltr';
+        ctx.align = 'left'
+        // Some platforms may return '-0'.
+        @assert Math.abs(ctx.measureText('Hello').advances[0]) === 0;
+        // Different platforms may render text slightly different.
+        @assert ctx.measureText('Hello').advances[1] >= 36;
+        @assert ctx.measureText('Hello').advances[2] >= 58;
+        @assert ctx.measureText('Hello').advances[3] >= 70;
+        @assert ctx.measureText('Hello').advances[4] >= 80;
+
+        var tm = ctx.measureText('Hello');
+        @assert ctx.measureText('Hello').advances[0] === tm.advances[0];
+        @assert ctx.measureText('Hello').advances[1] === tm.advances[1];
+        @assert ctx.measureText('Hello').advances[2] === tm.advances[2];
+        @assert ctx.measureText('Hello').advances[3] === tm.advances[3];
+        @assert ctx.measureText('Hello').advances[4] === tm.advances[4];
+    }).then(t_pass, t_fail);
+
+- name: 2d.text.measure.actualBoundingBox
+  desc: Testing actualBoundingBox for OffscreenCanvas
+  fonts:
+  - CanvasTest
+  code: |
+    var f = new FontFace("CanvasTest", "url('/fonts/CanvasTest.ttf')");
+    let fonts = (self.fonts ? self.fonts : document.fonts);
+    f.load();
+    fonts.add(f);
+    fonts.ready.then(function() {
+        ctx.font = '50px CanvasTest';
+        ctx.direction = 'ltr';
+        ctx.align = 'left'
+        ctx.baseline = 'alphabetic'
+        // Some platforms may return '-0'.
+        @assert Math.abs(ctx.measureText('A').actualBoundingBoxLeft) === 0;
+        // Different platforms may render text slightly different.
+        @assert ctx.measureText('A').actualBoundingBoxRight >= 50;
+        @assert ctx.measureText('A').actualBoundingBoxAscent >= 35;
+        @assert Math.abs(ctx.measureText('A').actualBoundingBoxDescent) === 0;
+
+        @assert ctx.measureText('D').actualBoundingBoxLeft >= 48;
+        @assert ctx.measureText('D').actualBoundingBoxLeft <= 52;
+        @assert ctx.measureText('D').actualBoundingBoxRight >= 75;
+        @assert ctx.measureText('D').actualBoundingBoxRight <= 80;
+        @assert ctx.measureText('D').actualBoundingBoxAscent >= 35;
+        @assert ctx.measureText('D').actualBoundingBoxAscent <= 40;
+        @assert ctx.measureText('D').actualBoundingBoxDescent >= 12;
+        @assert ctx.measureText('D').actualBoundingBoxDescent <= 15;
+
+        @assert Math.abs(ctx.measureText('ABCD').actualBoundingBoxLeft) === 0;
+        @assert ctx.measureText('ABCD').actualBoundingBoxRight >= 200;
+        @assert ctx.measureText('ABCD').actualBoundingBoxAscent >= 85;
+        @assert ctx.measureText('ABCD').actualBoundingBoxDescent >= 37;
+    }).then(t_pass, t_fail);
+
+- name: 2d.text.measure.fontBoundingBox
+  desc: Testing fontBoundingBox for OffscreenCanvas
+  fonts:
+  - CanvasTest
+  code: |
+    var f = new FontFace("CanvasTest", "url('/fonts/CanvasTest.ttf')");
+    let fonts = (self.fonts ? self.fonts : document.fonts);
+    f.load();
+    fonts.add(f);
+    fonts.ready.then(function() {
+        ctx.font = '50px CanvasTest';
+        ctx.direction = 'ltr';
+        ctx.align = 'left'
+        @assert ctx.measureText('A').fontBoundingBoxAscent === 85;
+        @assert ctx.measureText('A').fontBoundingBoxDescent === 39;
+
+        @assert ctx.measureText('ABCD').fontBoundingBoxAscent === 85;
+        @assert ctx.measureText('ABCD').fontBoundingBoxDescent === 39;
+    }).then(t_pass, t_fail);
+- name: 2d.text.measure.emHeights
+  desc: Testing emHeights for OffscreenCanvas
+  fonts:
+  - CanvasTest
+  code: |
+    var f = new FontFace("CanvasTest", "url('/fonts/CanvasTest.ttf')");
+    let fonts = (self.fonts ? self.fonts : document.fonts);
+    f.load();
+    fonts.add(f);
+    fonts.ready.then(function() {
+        ctx.font = '50px CanvasTest';
+        ctx.direction = 'ltr';
+        ctx.align = 'left'
+        @assert ctx.measureText('A').emHeightAscent === 37.5;
+        @assert ctx.measureText('A').emHeightDescent === 12.5;
+        @assert ctx.measureText('A').emHeightDescent + ctx.measureText('A').emHeightAscent === 50;
+
+        @assert ctx.measureText('ABCD').emHeightAscent === 37.5;
+        @assert ctx.measureText('ABCD').emHeightDescent === 12.5;
+        @assert ctx.measureText('ABCD').emHeightDescent + ctx.measureText('ABCD').emHeightAscent === 50;
+    }).then(t_pass, t_fail);
+
+- name: 2d.text.measure.baselines
+  desc: Testing baselines for OffscreenCanvas
+  fonts:
+  - CanvasTest
+  code: |
+    var f = new FontFace("CanvasTest", "url('/fonts/CanvasTest.ttf')");
+    let fonts = (self.fonts ? self.fonts : document.fonts);
+    f.load();
+    fonts.add(f);
+    fonts.ready.then(function() {
+       ctx.font = '50px CanvasTest';
+       ctx.direction = 'ltr';
+       ctx.align = 'left'
+       @assert Math.abs(ctx.measureText('A').getBaselines().alphabetic) === 0;
+       @assert ctx.measureText('A').getBaselines().ideographic === -39;
+       @assert ctx.measureText('A').getBaselines().hanging === 68;
+
+       @assert Math.abs(ctx.measureText('ABCD').getBaselines().alphabetic) === 0;
+       @assert ctx.measureText('ABCD').getBaselines().ideographic === -39;
+       @assert ctx.measureText('ABCD').getBaselines().hanging === 68;
+    }).then(t_pass, t_fail);
+
+- name: 2d.text.drawing.style.spacing
+  desc: Testing letter spacing and word spacing
+  code: |
+    @assert ctx.letterSpacing === '0px';
+    @assert ctx.wordSpacing === '0px';
+
+    ctx.letterSpacing = '3px';
+    @assert ctx.letterSpacing === '3px';
+    @assert ctx.wordSpacing === '0px';
+
+    ctx.wordSpacing = '5px';
+    @assert ctx.letterSpacing === '3px';
+    @assert ctx.wordSpacing === '5px';
+
+    ctx.letterSpacing = '-1px';
+    ctx.wordSpacing = '-1px';
+    @assert ctx.letterSpacing === '-1px';
+    @assert ctx.wordSpacing === '-1px';
+
+    ctx.letterSpacing = '1PX';
+    ctx.wordSpacing = '1EM';
+    @assert ctx.letterSpacing === '1px';
+    @assert ctx.wordSpacing === '1em';
+    t.done();
+
+- name: 2d.text.drawing.style.nonfinite.spacing
+  desc: Testing letter spacing and word spacing with nonfinite inputs
+  code: |
+    @assert ctx.letterSpacing === '0px';
+    @assert ctx.wordSpacing === '0px';
+
+    function test_word_spacing(value) {
+      ctx.wordSpacing = value;
+      ctx.letterSpacing = value;
+      @assert ctx.wordSpacing === '0px';
+      @assert ctx.letterSpacing === '0px';
+    }
+    @nonfinite test_word_spacing(<0 NaN Infinity -Infinity>);
+
+    t.done();
+
+- name: 2d.text.drawing.style.invalid.spacing
+  desc: Testing letter spacing and word spacing with invalid units
+  code: |
+    @assert ctx.letterSpacing === '0px';
+    @assert ctx.wordSpacing === '0px';
+
+    function test_word_spacing(value) {
+      ctx.wordSpacing = value;
+      ctx.letterSpacing = value;
+      @assert ctx.wordSpacing === '0px';
+      @assert ctx.letterSpacing === '0px';
+    }
+    @nonfinite test_word_spacing(< '0s' '1min' '1deg' '1pp' 'initial' 'inherit' 'normal' 'none'>);
+
+    t.done();
+
+- name: 2d.text.drawing.style.letterSpacing.measure.absolute
+  desc: Testing letter spacing with absolute length
+  code: |
+    @assert ctx.letterSpacing === '0px';
+    @assert ctx.wordSpacing === '0px';
+    var width_normal = ctx.measureText('Hello World').width;
+
+    function test_letter_spacing(value, difference_spacing, epsilon) {
+      ctx.letterSpacing = value;
+      @assert ctx.letterSpacing === value;
+      @assert ctx.wordSpacing === '0px';
+      width_with_letter_spacing = ctx.measureText('Hello World').width;
+      assert_approx_equals(width_with_letter_spacing, width_normal + difference_spacing, epsilon, "letter spacing doesn't work.");
+    }
+
+    // The first value is the letter Spacing to be set, the second value the
+    // change in length of string 'Hello World', note that there are 11 letters
+    // in 'hello world', so the length difference is always letterSpacing * 11.
+    // and the third value is the acceptable differencee for the length change,
+    // note that unit such as 1cm/1mm doesn't map to an exact pixel value.
+    test_cases = [['3px', 33, 0.1],
+                  ['5px', 55, 0.1],
+                  ['-2px', -22, 0.1],
+                  ['1in', 1056, 0.1],
+                  ['-0.1cm', -41.65, 0.2],
+                  ['-0.6mm', -24,95, 0.2]]
+
+    for (const test_case of test_cases) {
+      test_letter_spacing(test_case[0], test_case[1], test_case[2]);
+    }
+    t.done();
+
+- name: 2d.text.drawing.style.letterSpacing.measure.relative
+  desc: Testing letter spacing with font-relative length
+  code: |
+    @assert ctx.letterSpacing === '0px';
+    @assert ctx.wordSpacing === '0px';
+    ctx.font = "10px monospace";
+    var width_normal = ctx.measureText('Hello World').width;
+    var ch_width = width_normal / 11;
+
+    function test_letter_spacing(value, difference_spacing, epsilon) {
+      ctx.letterSpacing = value;
+      @assert ctx.letterSpacing === value;
+      @assert ctx.wordSpacing === '0px';
+      width_with_letter_spacing = ctx.measureText('Hello World').width;
+      assert_approx_equals(width_with_letter_spacing, width_normal + difference_spacing, epsilon, "letter spacing doesn't work.");
+    }
+
+    // The first value is the letter Spacing to be set, the second value the
+    // change in length of string 'Hello World', note that there are 11 letters
+    // in 'hello world', so the length difference is always letterSpacing * 11.
+    // and the third value is the acceptable differencee for the length change.
+    test_cases = [['1em', 110, 0.1],
+                  ['-0.1em', -11, 0.1],
+                  ['1ch', 11 * ch_width, 0.1]]
+
+    for (const test_case of test_cases) {
+      test_letter_spacing(test_case[0], test_case[1], test_case[2]);
+    }
+    t.done();
+
+- name: 2d.text.drawing.style.wordSpacing.measure.absolute
+  desc: Testing if word spacing is working properly with absolute length
+  code: |
+    @assert ctx.letterSpacing === '0px';
+    @assert ctx.wordSpacing === '0px';
+    var width_normal = ctx.measureText('Hello World, again').width;
+
+    function test_word_spacing(value, difference_spacing, epsilon) {
+      ctx.wordSpacing = value;
+      @assert ctx.letterSpacing === '0px';
+      @assert ctx.wordSpacing === value;
+      width_with_word_spacing = ctx.measureText('Hello World, again').width;
+      assert_approx_equals(width_with_word_spacing, width_normal + difference_spacing, epsilon, "word spacing doesn't work.");
+    }
+
+    // The first value is the word Spacing to be set, the second value the
+    // change in length of string 'Hello World', note that there are 2 words
+    // in 'Hello World, again', so the length difference is always wordSpacing * 2.
+    // and the third value is the acceptable differencee for the length change,
+    // note that unit such as 1cm/1mm doesn't map to an exact pixel value.
+    test_cases = [['3px', 6, 0.1],
+                  ['5px', 10, 0.1],
+                  ['-2px', -4, 0.1],
+                  ['1in', 192, 0.1],
+                  ['-0.1cm', -7.57, 0.2],
+                  ['-0.6mm', -4.54, 0.2]]
+
+    for (const test_case of test_cases) {
+      test_word_spacing(test_case[0], test_case[1], test_case[2]);
+    }
+    t.done();
+
+- name: 2d.text.drawing.style.wordSpacing.measure.relative
+  desc: Testing if word spacing is working properly with font-relative length
+  code: |
+    @assert ctx.letterSpacing === '0px';
+    @assert ctx.wordSpacing === '0px';
+    ctx.font = "10px monospace";
+    var width_normal = ctx.measureText('Hello World, again').width;
+    var ch_width = width_normal / 18;
+
+    function test_word_spacing(value, difference_spacing, epsilon) {
+      ctx.wordSpacing = value;
+      @assert ctx.letterSpacing === '0px';
+      @assert ctx.wordSpacing === value;
+      width_with_word_spacing = ctx.measureText('Hello World, again').width;
+      assert_approx_equals(width_with_word_spacing, width_normal + difference_spacing, epsilon, "word spacing doesn't work.");
+    }
+
+    // The first value is the word Spacing to be set, the second value the
+    // change in length of string 'Hello World', note that there are 2 words
+    // in 'Hello World, again', so the length difference is always wordSpacing * 2.
+    // and the third value is the acceptable differencee for the length change.
+    test_cases = [['1em', 20, 0.1],
+                  ['-0.5em', -10, 0.1],
+                  ['1ch', 2 * ch_width, 0.1]]
+
+    for (const test_case of test_cases) {
+      test_word_spacing(test_case[0], test_case[1], test_case[2]);
+    }
+    t.done();
+
+- name: 2d.text.drawing.style.letterSpacing.change.font
+  desc: Set letter spacing and word spacing to font dependent value and verify it works after font change.
+  code: |
+    @assert ctx.letterSpacing === '0px';
+    @assert ctx.wordSpacing === '0px';
+    // Get the width for 'Hello World' at default size, 10px.
+    var width_normal = ctx.measureText('Hello World').width;
+
+    ctx.letterSpacing = '1em';
+    @assert ctx.letterSpacing === '1em';
+    // 1em = 10px. Add 10px after each letter in "Hello World",
+    // makes it 110px longer.
+    var width_with_spacing = ctx.measureText('Hello World').width;
+    @assert width_with_spacing === width_normal + 110;
+
+    // Changing font to 20px. Without resetting the spacing, 1em letterSpacing
+    // is now 20px, so it's suppose to be 220px longer without any letterSpacing set.
+    ctx.font = '20px serif';
+    width_with_spacing = ctx.measureText('Hello World').width;
+    // Now calculate the reference spacing for "Hello World" with no spacing.
+    ctx.letterSpacing = '0em';
+    width_normal = ctx.measureText('Hello World').width;
+    @assert width_with_spacing === width_normal + 220;
+    t.done();
+
+- name: 2d.text.drawing.style.wordSpacing.change.font
+  desc: Set word spacing and word spacing to font dependent value and verify it works after font change.
+  code: |
+    @assert ctx.letterSpacing === '0px';
+    @assert ctx.wordSpacing === '0px';
+    // Get the width for 'Hello World, again' at default size, 10px.
+    var width_normal = ctx.measureText('Hello World, again').width;
+
+    ctx.wordSpacing = '1em';
+    @assert ctx.wordSpacing === '1em';
+    // 1em = 10px. Add 10px after each word in "Hello World, again",
+    // makes it 20px longer.
+    var width_with_spacing = ctx.measureText('Hello World, again').width;
+    @assert width_with_spacing === width_normal + 20;
+
+    // Changing font to 20px. Without resetting the spacing, 1em wordSpacing
+    // is now 20px, so it's suppose to be 40px longer without any wordSpacing set.
+    ctx.font = '20px serif';
+    width_with_spacing = ctx.measureText('Hello World, again').width;
+    // Now calculate the reference spacing for "Hello World, again" with no spacing.
+    ctx.wordSpacing = '0em';
+    width_normal = ctx.measureText('Hello World, again').width;
+    @assert width_with_spacing === width_normal + 40;
+    t.done();
+
+- name: 2d.text.drawing.style.fontKerning
+  desc: Testing basic functionalities of fontKerning for canvas
+  code: |
+    @assert ctx.fontKerning === "auto";
+    ctx.fontKerning = "normal";
+    @assert ctx.fontKerning === "normal";
+    width_normal = ctx.measureText("TAWATAVA").width;
+    ctx.fontKerning = "none";
+    @assert ctx.fontKerning === "none";
+    width_none = ctx.measureText("TAWATAVA").width;
+    @assert width_normal < width_none;
+    t.done();
+
+- name: 2d.text.drawing.style.fontKerning.with.uppercase
+  desc: Testing basic functionalities of fontKerning for canvas
+  code: |
+    @assert ctx.fontKerning === "auto";
+    ctx.fontKerning = "Normal";
+    @assert ctx.fontKerning === "normal";
+    ctx.fontKerning = "auto";
+    ctx.fontKerning = "normal";
+    @assert ctx.fontKerning === "normal";
+    ctx.fontKerning = "auto";
+    ctx.fontKerning = "noRmal";
+    @assert ctx.fontKerning === "normal";
+    ctx.fontKerning = "auto";
+    ctx.fontKerning = "NoRMal";
+    @assert ctx.fontKerning === "normal";
+    ctx.fontKerning = "auto";
+    ctx.fontKerning = "NORMAL";
+    @assert ctx.fontKerning === "normal";
+
+    ctx.fontKerning = "None";
+    @assert ctx.fontKerning === "none";
+    ctx.fontKerning = "auto";
+    ctx.fontKerning = "none";
+    @assert ctx.fontKerning === "none";
+    ctx.fontKerning = "auto";
+    ctx.fontKerning = "nOne";
+    @assert ctx.fontKerning === "none";
+    ctx.fontKerning = "auto";
+    ctx.fontKerning = "nonE";
+    @assert ctx.fontKerning === "none";
+    ctx.fontKerning = "auto";
+    ctx.fontKerning = "NONE";
+    @assert ctx.fontKerning === "none";
+    t.done();
+
+- name: 2d.text.drawing.style.fontVariant.settings
+  desc: Testing basic functionalities of fontKerning for canvas
+  code: |
+    // Setting fontVariantCaps with lower cases
+    @assert ctx.fontVariantCaps === "normal";
+
+    ctx.fontVariantCaps = "normal";
+    @assert ctx.fontVariantCaps === "normal";
+
+    ctx.fontVariantCaps = "small-caps";
+    @assert ctx.fontVariantCaps === "small-caps";
+
+    ctx.fontVariantCaps = "all-small-caps";
+    @assert ctx.fontVariantCaps === "all-small-caps";
+
+    ctx.fontVariantCaps = "petite-caps";
+    @assert ctx.fontVariantCaps === "petite-caps";
+
+    ctx.fontVariantCaps = "all-petite-caps";
+    @assert ctx.fontVariantCaps === "all-petite-caps";
+
+    ctx.fontVariantCaps = "unicase";
+    @assert ctx.fontVariantCaps === "unicase";
+
+    ctx.fontVariantCaps = "titling-caps";
+    @assert ctx.fontVariantCaps === "titling-caps";
+
+    // Setting fontVariantCaps with lower cases and upper cases word.
+    ctx.fontVariantCaps = "nORmal";
+    @assert ctx.fontVariantCaps === "normal";
+
+    ctx.fontVariantCaps = "smaLL-caps";
+    @assert ctx.fontVariantCaps === "small-caps";
+
+    ctx.fontVariantCaps = "all-small-CAPS";
+    @assert ctx.fontVariantCaps === "all-small-caps";
+
+    ctx.fontVariantCaps = "pEtitE-caps";
+    @assert ctx.fontVariantCaps === "petite-caps";
+
+    ctx.fontVariantCaps = "All-Petite-Caps";
+    @assert ctx.fontVariantCaps === "all-petite-caps";
+
+    ctx.fontVariantCaps = "uNIcase";
+    @assert ctx.fontVariantCaps === "unicase";
+
+    ctx.fontVariantCaps = "titling-CAPS";
+    @assert ctx.fontVariantCaps === "titling-caps";
+
+    // Setting fontVariantCaps with non-existing font variant.
+    ctx.fontVariantCaps = "abcd";
+    @assert ctx.fontVariantCaps === "titling-caps";
+    t.done();
+
+- name: 2d.text.drawing.style.textRendering.settings
+  desc: Testing basic functionalities of textRendering in Canvas
+  code: |
+    // Setting textRendering with lower cases
+    @assert ctx.textRendering === "auto";
+
+    ctx.textRendering = "auto";
+    @assert ctx.textRendering === "auto";
+
+    ctx.textRendering = "optimizespeed";
+    @assert ctx.textRendering === "optimizeSpeed";
+
+    ctx.textRendering = "optimizelegibility";
+    @assert ctx.textRendering === "optimizeLegibility";
+
+    ctx.textRendering = "geometricprecision";
+    @assert ctx.textRendering === "geometricPrecision";
+
+    // Setting textRendering with lower cases and upper cases word.
+    ctx.textRendering = "aUto";
+    @assert ctx.textRendering === "auto";
+
+    ctx.textRendering = "OPtimizeSpeed";
+    @assert ctx.textRendering === "optimizeSpeed";
+
+    ctx.textRendering = "OPtimizELEgibility";
+    @assert ctx.textRendering === "optimizeLegibility";
+
+    ctx.textRendering = "GeometricPrecision";
+    @assert ctx.textRendering === "geometricPrecision";
+
+    // Setting textRendering with non-existing font variant.
+    ctx.textRendering = "abcd";
+    @assert ctx.textRendering === "geometricPrecision";
+    t.done();
+
+- name: 2d.text.drawing.style.measure.rtl.text
+  desc: Measurement should follow canvas direction instead text direction
+  code: |
+    metrics = ctx.measureText('اَلْعَرَبِيَّةُ');
+    @assert metrics.actualBoundingBoxLeft < metrics.actualBoundingBoxRight;
+
+    metrics = ctx.measureText('hello');
+    @assert metrics.actualBoundingBoxLeft < metrics.actualBoundingBoxRight;
+    t.done();
+
+- name: 2d.text.drawing.style.measure.textAlign
+  desc: Measurement should be related to textAlignment
+  code: |
+    ctx.textAlign = "right";
+    metrics = ctx.measureText('hello');
+    @assert metrics.actualBoundingBoxLeft > metrics.actualBoundingBoxRight;
+
+    ctx.textAlign = "left"
+    metrics = ctx.measureText('hello');
+    @assert metrics.actualBoundingBoxLeft < metrics.actualBoundingBoxRight;
+    t.done();
+
+- name: 2d.text.drawing.style.measure.direction
+  desc: Measurement should follow text direction
+  code: |
+    ctx.direction = "ltr";
+    metrics = ctx.measureText('hello');
+    @assert metrics.actualBoundingBoxLeft < metrics.actualBoundingBoxRight;
+
+    ctx.direction = "rtl";
+    metrics = ctx.measureText('hello');
+    @assert metrics.actualBoundingBoxLeft > metrics.actualBoundingBoxRight;
+    t.done();
+
+# TODO: shadows, alpha, composite, clip
diff --git a/testing/web-platform/tests/html/canvas/tools/yaml/offscreen/the-canvas-state.yaml b/testing/web-platform/tests/html/canvas/tools/yaml/offscreen/the-canvas-state.yaml
new file mode 100644
index 0000000000..afb4cf956c
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/tools/yaml/offscreen/the-canvas-state.yaml
@@ -0,0 +1,92 @@
+- name: 2d.state.saverestore.transformation
+  desc: save()/restore() affects the current transformation matrix
+  code: |
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.save();
+    ctx.translate(200, 0);
+    ctx.restore();
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(-200, 0, 100, 50);
+    @assert pixel 50,25 == 0,255,0,255;
+    t.done();
+
+- name: 2d.state.saverestore.clip
+  desc: save()/restore() affects the clipping path
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.save();
+    ctx.rect(0, 0, 1, 1);
+    ctx.clip();
+    ctx.restore();
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 100, 50);
+    @assert pixel 50,25 == 0,255,0,255;
+    t.done();
+
+- name: 2d.state.saverestore.path
+  desc: save()/restore() does not affect the current path
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.save();
+    ctx.rect(0, 0, 100, 50);
+    ctx.restore();
+    ctx.fillStyle = '#0f0';
+    ctx.fill();
+    @assert pixel 50,25 == 0,255,0,255;
+    t.done();
+
+- name: 2d.state.saverestore.bitmap
+  desc: save()/restore() does not affect the current bitmap
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.save();
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.restore();
+    @assert pixel 50,25 == 0,255,0,255;
+    t.done();
+
+- name: 2d.state.saverestore.stack
+  desc: save()/restore() can be nested as a stack
+  code: |
+    ctx.lineWidth = 1;
+    ctx.save();
+    ctx.lineWidth = 2;
+    ctx.save();
+    ctx.lineWidth = 3;
+    @assert ctx.lineWidth === 3;
+    ctx.restore();
+    @assert ctx.lineWidth === 2;
+    ctx.restore();
+    @assert ctx.lineWidth === 1;
+    t.done();
+
+- name: 2d.state.saverestore.stackdepth
+  desc: save()/restore() stack depth is not unreasonably limited
+  code: |
+    var limit = 512;
+    for (var i = 1; i < limit; ++i)
+    {
+        ctx.save();
+        ctx.lineWidth = i;
+    }
+    for (var i = limit-1; i > 0; --i)
+    {
+        @assert ctx.lineWidth === i;
+        ctx.restore();
+    }
+    t.done();
+
+- name: 2d.state.saverestore.underflow
+  desc: restore() with an empty stack has no effect
+  code: |
+    for (var i = 0; i < 16; ++i)
+        ctx.restore();
+    ctx.lineWidth = 0.5;
+    ctx.restore();
+    @assert ctx.lineWidth === 0.5;
+    t.done();
diff --git a/testing/web-platform/tests/html/canvas/tools/yaml/offscreen/the-offscreen-canvas.yaml b/testing/web-platform/tests/html/canvas/tools/yaml/offscreen/the-offscreen-canvas.yaml
new file mode 100644
index 0000000000..0bef18bf9d
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/tools/yaml/offscreen/the-offscreen-canvas.yaml
@@ -0,0 +1,275 @@
+- name: 2d.canvas.reference
+  desc: canvas refers back to its canvas
+  code: |
+    @assert ctx.canvas === canvas;
+    t.done();
+
+- name: 2d.canvas.readonly
+  desc: canvas is readonly
+  code: |
+    var offscreenCanvas2 = new OffscreenCanvas(100, 50);
+    var d = ctx.canvas;
+    @assert offscreenCanvas2 !== d;
+    ctx.canvas = offscreenCanvas2;
+    @assert ctx.canvas === d;
+    t.done();
+
+- name: 2d.getcontext.exists
+  desc: The 2D context is implemented
+  code: |
+    var offscreenCanvas2 = new OffscreenCanvas(100, 50);
+    @assert offscreenCanvas2.getContext('2d') !== null;
+    t.done();
+
+- name: 2d.getcontext.extraargs.create
+  desc: The 2D context doesn't throw with extra getContext arguments (new context)
+  code: |
+    @assert (new OffscreenCanvas(100, 50)).getContext('2d', false, {}, [], 1, "2") !== null;
+    @assert (new OffscreenCanvas(100, 50)).getContext('2d', 123) !== null;
+    @assert (new OffscreenCanvas(100, 50)).getContext('2d', "test") !== null;
+    @assert (new OffscreenCanvas(100, 50)).getContext('2d', undefined) !== null;
+    @assert (new OffscreenCanvas(100, 50)).getContext('2d', null) !== null;
+    @assert (new OffscreenCanvas(100, 50)).getContext('2d', Symbol.hasInstance) !== null;
+    t.done();
+
+- name: 2d.getcontext.extraargs.cache
+  desc: The 2D context doesn't throw with extra getContext arguments (cached)
+  code: |
+    @assert canvas.getContext('2d', false, {}, [], 1, "2") !== null;
+    @assert canvas.getContext('2d', 123) !== null;
+    @assert canvas.getContext('2d', "test") !== null;
+    @assert canvas.getContext('2d', undefined) !== null;
+    @assert canvas.getContext('2d', null) !== null;
+    @assert canvas.getContext('2d', Symbol.hasInstance) !== null;
+    t.done();
+
+- name: 2d.getcontext.unique
+  desc: getContext('2d') returns the same object
+  code: |
+    var offscreenCanvas2 = new OffscreenCanvas(100, 50);
+    @assert offscreenCanvas2.getContext('2d') === offscreenCanvas2.getContext('2d');
+    t.done();
+
+- name: 2d.getcontext.shared
+  desc: getContext('2d') returns objects which share canvas state
+  code: |
+    var ctx2 = canvas.getContext('2d');
+    ctx.fillStyle = '#f00';
+    ctx2.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 100, 50);
+    @assert pixel 50,25 == 0,255,0,255;
+    t.done();
+
+- name: context.emptystring
+  desc: getContext with empty string returns null
+  code: |
+    var offscreenCanvas2 = new OffscreenCanvas(100, 50);
+    @assert throws TypeError offscreenCanvas2.getContext("");
+    t.done();
+
+- name: context.unrecognised.badname
+  desc: getContext with unrecognised context name returns null
+  code: |
+    var offscreenCanvas2 = new OffscreenCanvas(100, 50);
+    @assert throws TypeError offscreenCanvas2.getContext('This is not an implemented context in any real browser');
+    t.done();
+
+- name: context.unrecognised.badsuffix
+  desc: Context name "2d" plus a suffix is unrecognised
+  code: |
+    var offscreenCanvas2 = new OffscreenCanvas(100, 50);
+    @assert throws TypeError offscreenCanvas2.getContext("2d#");
+    t.done();
+
+- name: context.unrecognised.nullsuffix
+  desc: Context name "2d" plus a "\0" suffix is unrecognised
+  code: |
+    var offscreenCanvas2 = new OffscreenCanvas(100, 50);
+    @assert throws TypeError offscreenCanvas2.getContext("2d\0");
+    t.done();
+
+- name: context.unrecognised.unicode
+  desc: Context name which kind of looks like "2d" is unrecognised
+  code: |
+    var offscreenCanvas2 = new OffscreenCanvas(100, 50);
+    @assert throws TypeError offscreenCanvas2.getContext("2\uFF44");
+    t.done();
+
+- name: context.casesensitive
+  desc: Context name "2D" is unrecognised; matching is case sensitive
+  code: |
+    var offscreenCanvas2 = new OffscreenCanvas(100, 50);
+    @assert throws TypeError offscreenCanvas2.getContext('2D');
+    t.done();
+
+- name: context.arguments.missing
+  code: |
+    var offscreenCanvas2 = new OffscreenCanvas(100, 50);
+    @assert throws TypeError offscreenCanvas2.getContext(); @moz-todo
+    t.done();
+
+
+- name: initial.color
+  desc: Initial state is transparent black
+  code: |
+    @assert pixel 20,20 == 0,0,0,0;
+    t.done();
+
+- name: initial.reset.different
+  desc: Changing size resets canvas to transparent black
+  code: |
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 50, 50);
+    @assert pixel 20,20 == 255,0,0,255;
+    canvas.width = 50;
+    @assert pixel 20,20 == 0,0,0,0;
+    t.done();
+
+- name: initial.reset.same
+  desc: Setting size (not changing the value) resets canvas to transparent black
+  code: |
+    canvas.width = 100;
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 50, 50);
+    @assert pixel 20,20 == 255,0,0,255;
+    canvas.width = 100;
+    @assert pixel 20,20 == 0,0,0,0;
+    t.done();
+
+- name: initial.reset.path
+  desc: Resetting the canvas state resets the current path
+  code: |
+    canvas.width = 100;
+    ctx.rect(0, 0, 100, 50);
+    canvas.width = 100;
+    ctx.fillStyle = '#f00';
+    ctx.fill();
+    @assert pixel 20,20 == 0,0,0,0;
+    t.done();
+
+- name: initial.reset.clip
+  desc: Resetting the canvas state resets the current clip region
+  code: |
+    canvas.width = 100;
+    ctx.rect(0, 0, 1, 1);
+    ctx.clip();
+    canvas.width = 100;
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 100, 50);
+    @assert pixel 20,20 == 0,255,0,255;
+    t.done();
+
+- name: initial.reset.transform
+  desc: Resetting the canvas state resets the current transformation matrix
+  code: |
+    canvas.width = 100;
+    ctx.scale(0.1, 0.1);
+    canvas.width = 100;
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 100, 50);
+    @assert pixel 20,20 == 0,255,0,255;
+    t.done();
+
+- name: initial.reset.gradient
+  desc: Resetting the canvas state does not invalidate any existing gradients
+  code: |
+    canvas.width = 50;
+    var g = ctx.createLinearGradient(0, 0, 100, 0);
+    g.addColorStop(0, '#0f0');
+    g.addColorStop(1, '#0f0');
+    canvas.width = 100;
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.fillStyle = g;
+    ctx.fillRect(0, 0, 100, 50);
+    @assert pixel 50,25 == 0,255,0,255;
+    t.done();
+
+- name: initial.reset.pattern
+  desc: Resetting the canvas state does not invalidate any existing patterns
+  code: |
+    canvas.width = 30;
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 30, 50);
+    var p = ctx.createPattern(canvas, 'repeat-x');
+    canvas.width = 100;
+    ctx.fillStyle = '#f00';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.fillStyle = p;
+    ctx.fillRect(0, 0, 100, 50);
+    @assert pixel 50,25 == 0,255,0,255;
+    t.done();
+
+- name: size.attributes.idl.set.zero
+  desc: Setting width/height IDL attributes to 0
+  code: |
+    canvas.width = 0;
+    canvas.height = 0;
+    @assert canvas.width === 0;
+    @assert canvas.height === 0;
+    t.done();
+
+- name: size.attributes.idl
+  desc: Getting/setting width/height IDL attributes
+  webidl:
+  - es-unsigned-long
+  code: |
+    canvas.width = "100";
+    canvas.height = "100";
+    @assert canvas.width === 100;
+    @assert canvas.height === 100;
+    canvas.width = "+1.5e2";
+    canvas.height = "0x96";
+    @assert canvas.width === 150;
+    @assert canvas.height === 150;
+    canvas.width = 301.999;
+    canvas.height = 301.001;
+    @assert canvas.width === 301;
+    @assert canvas.height === 301;
+    @assert throws TypeError canvas.width = "400x";
+    @assert throws TypeError canvas.height = "foo";
+    @assert canvas.width === 301;
+    @assert canvas.height === 301;
+    t.done();
+
+- name: size.attributes.default
+  desc: Default width/height when attributes are missing
+  code: |
+    @assert canvas.width === 100;
+    @assert canvas.height === 50;
+    t.done();
+
+- name: size.attributes.reflect.setidl
+  desc: Setting IDL attributes updates IDL and content attributes
+  code: |
+    canvas.width = 120;
+    canvas.height = 60;
+    @assert canvas.width === 120;
+    @assert canvas.height === 60;
+    t.done();
+
+- name: size.attributes.reflect.setidlzero
+  desc: Setting IDL attributes to 0 updates IDL and content attributes
+  code: |
+    canvas.width = 0;
+    canvas.height = 0;
+    @assert canvas.width === 0;
+    @assert canvas.height === 0;
+    t.done();
+
+- name: size.large
+  notes: Not sure how reasonable this is, but the spec doesn't say there's an upper
+    limit on the size.
+  code: |
+    var n = 2147483647; // 2^31 - 1, which should be supported by any sensible definition of "long"
+    canvas.width = n;
+    canvas.height = n;
+    @assert canvas.width === n;
+    @assert canvas.height === n;
+    t.done();
+
+- name: 2d.text.setFont.mathFont
+  desc: crbug.com/1212190, make sure offscreencanvas doesn't crash with Math Font
+  code: |
+    ctx.font = "math serif";
+    t.done();
diff --git a/testing/web-platform/tests/html/capability-delegation/delegate-fullscreen-request-popup-cross-origin.https.sub.tentative.html b/testing/web-platform/tests/html/capability-delegation/delegate-fullscreen-request-popup-cross-origin.https.sub.tentative.html
new file mode 100644
index 0000000000..837fa438a3
--- /dev/null
+++ b/testing/web-platform/tests/html/capability-delegation/delegate-fullscreen-request-popup-cross-origin.https.sub.tentative.html
@@ -0,0 +1,47 @@
+
+
+Capability Delegation of Fullscreen Requests: Popup Cross-Origin
+
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+  Verifies that element.requestFullscreen() calls from a cross-origin popup without user activation
+  work if and only if the opener has user activation and it delegates the capability.
+
+  https://wicg.github.io/capability-delegation/spec.html
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
diff --git a/testing/web-platform/tests/html/capability-delegation/delegate-fullscreen-request-popup-same-origin.https.tentative.html b/testing/web-platform/tests/html/capability-delegation/delegate-fullscreen-request-popup-same-origin.https.tentative.html
new file mode 100644
index 0000000000..42bb8703d8
--- /dev/null
+++ b/testing/web-platform/tests/html/capability-delegation/delegate-fullscreen-request-popup-same-origin.https.tentative.html
@@ -0,0 +1,46 @@
+
+
+Capability Delegation of Fullscreen Requests: Popup Same-Origin
+
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+  Verifies that element.requestFullscreen() calls from a same-origin popup without user activation
+  work if and only if the opener has user activation and it delegates the capability.
+
+  https://wicg.github.io/capability-delegation/spec.html
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
diff --git a/testing/web-platform/tests/html/capability-delegation/delegate-fullscreen-request-subframe-cross-origin.https.sub.tentative.html b/testing/web-platform/tests/html/capability-delegation/delegate-fullscreen-request-subframe-cross-origin.https.sub.tentative.html
new file mode 100644
index 0000000000..517860c896
--- /dev/null
+++ b/testing/web-platform/tests/html/capability-delegation/delegate-fullscreen-request-subframe-cross-origin.https.sub.tentative.html
@@ -0,0 +1,51 @@
+
+
+Capability Delegation of Fullscreen Requests: Subframe Cross-Origin
+
+
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+  Verifies that element.requestFullscreen() calls from a cross-origin subframe without user
+  activation work if and only if the top frame has user activation and it delegates the capability.
+
+  https://wicg.github.io/capability-delegation/spec.html
+
+  See wpt/html/user-activation/propagation*.html for frame tree user activation visibility tests.
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
+
+
diff --git a/testing/web-platform/tests/html/capability-delegation/delegate-fullscreen-request-subframe-same-origin.https.tentative.html b/testing/web-platform/tests/html/capability-delegation/delegate-fullscreen-request-subframe-same-origin.https.tentative.html
new file mode 100644
index 0000000000..16cbbfd3e9
--- /dev/null
+++ b/testing/web-platform/tests/html/capability-delegation/delegate-fullscreen-request-subframe-same-origin.https.tentative.html
@@ -0,0 +1,49 @@
+
+
+Capability Delegation of Fullscreen Requests: Subframe Same-Origin
+
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+  Verifies that element.requestFullscreen() calls from a same-origin subframe without user
+  activation work if and only if the top frame has user activation, regardless of whether it
+  delegates the capability or not.
+
+  https://wicg.github.io/capability-delegation/spec.html
+
+  See wpt/html/user-activation/propagation*.html for frame tree user activation visibility tests.
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
+
+
diff --git a/testing/web-platform/tests/html/capability-delegation/delegation-consumes-activation.https.tentative.html b/testing/web-platform/tests/html/capability-delegation/delegation-consumes-activation.https.tentative.html
new file mode 100644
index 0000000000..a538f29493
--- /dev/null
+++ b/testing/web-platform/tests/html/capability-delegation/delegation-consumes-activation.https.tentative.html
@@ -0,0 +1,55 @@
+
+
+Capability Delegation: Consumes User Activation
+
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+  Test that capability delegation consumes transient user activation.
+
+  https://wicg.github.io/capability-delegation/spec.html
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
+
+
diff --git a/testing/web-platform/tests/html/capability-delegation/delegation-sender-checks.tentative.html b/testing/web-platform/tests/html/capability-delegation/delegation-sender-checks.tentative.html
new file mode 100644
index 0000000000..4fa8a2d433
--- /dev/null
+++ b/testing/web-platform/tests/html/capability-delegation/delegation-sender-checks.tentative.html
@@ -0,0 +1,60 @@
+!DOCTYPE html>
+
+Capability Delegation sender checks
+
+
+
+
+
+
+
+                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
+
+
diff --git a/testing/web-platform/tests/html/capability-delegation/resources/delegate-fullscreen-request-recipient.html b/testing/web-platform/tests/html/capability-delegation/resources/delegate-fullscreen-request-recipient.html
new file mode 100644
index 0000000000..11daf738d6
--- /dev/null
+++ b/testing/web-platform/tests/html/capability-delegation/resources/delegate-fullscreen-request-recipient.html
@@ -0,0 +1,29 @@
+
+Capability Delegation of Fullscreen Requests test recipient
+Capability Delegation of Fullscreen Requests test recipient body
+
+
diff --git a/testing/web-platform/tests/html/capability-delegation/resources/utils.js b/testing/web-platform/tests/html/capability-delegation/resources/utils.js
new file mode 100644
index 0000000000..575028763e
--- /dev/null
+++ b/testing/web-platform/tests/html/capability-delegation/resources/utils.js
@@ -0,0 +1,55 @@
+// Returns a Promise that gets resolved with `event.data` when `window` receives from `source` a
+// "message" event whose `event.data.type` matches the string `message_data_type`.
+function getMessageData(message_data_type, source) {
+    return new Promise(resolve => {
+        function waitAndRemove(e) {
+            if (e.source != source || !e.data || e.data.type != message_data_type)
+                return;
+            window.removeEventListener("message", waitAndRemove);
+            resolve(e.data);
+        }
+        window.addEventListener("message", waitAndRemove);
+    });
+}
+
+// A helper that simulates user activation on the current frame if `activate` is true, then posts
+// `message` to `frame` with the target `origin` and specified `capability` to delegate. This helper
+// awaits and returns a Promise fulfilled with the result message sent in reply from `frame`.
+// However, if the `postMessage` call fails, the helper returns a Promise rejected with the
+// exception.
+async function postCapabilityDelegationMessage(frame, message, origin, capability, activate) {
+    let result_promise = getMessageData("result", frame);
+
+    if (activate)
+        await test_driver.bless();
+
+    let postMessageOptions = {targetOrigin: origin};
+    if (capability)
+        postMessageOptions["delegate"] = capability;
+    try {
+        frame.postMessage(message, postMessageOptions);
+    } catch (exception) {
+        return Promise.reject(exception);
+    }
+
+    return await result_promise;
+}
+
+// Returns the name of a capability for which `postMessage` delegation is supported by the user
+// agent, or undefined if no such capability is found.
+async function findOneCapabilitySupportingDelegation() {
+  const capabilities = ["fullscreen", "payment", "display-capture"];
+
+  for (let i = 0; i < capabilities.length; i++) {
+    try {
+      await postCapabilityDelegationMessage(window, "any_message", "/", capabilities[i], false);
+      assert_unreached();
+    } catch (exception) {
+      if (exception.name != "NotSupportedError")
+          return capabilities[i];
+      // Ignore all other exceptions to continue searching through the list.
+    }
+  };
+
+  return undefined;
+}
diff --git a/testing/web-platform/tests/html/cross-origin-embedder-policy/META.yml b/testing/web-platform/tests/html/cross-origin-embedder-policy/META.yml
new file mode 100644
index 0000000000..dc7010880b
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-embedder-policy/META.yml
@@ -0,0 +1,9 @@
+spec: https://html.spec.whatwg.org/multipage/origin.html#coep
+suggested_reviewers:
+  - mikewest
+  - jugglinmike
+  - arturjanc
+  - lweichselbaum
+  - hemeryar
+  - ParisMeuleman
+  - valenting
diff --git a/testing/web-platform/tests/html/cross-origin-embedder-policy/README.md b/testing/web-platform/tests/html/cross-origin-embedder-policy/README.md
new file mode 100644
index 0000000000..16179eb013
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-embedder-policy/README.md
@@ -0,0 +1 @@
+See `../cross-origin-opener-policy/README.md`.
diff --git a/testing/web-platform/tests/html/cross-origin-embedder-policy/about-blank-popup.https.html b/testing/web-platform/tests/html/cross-origin-embedder-policy/about-blank-popup.https.html
new file mode 100644
index 0000000000..2dc73c7561
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-embedder-policy/about-blank-popup.https.html
@@ -0,0 +1,59 @@
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/cross-origin-embedder-policy/about-blank-popup.https.html.headers b/testing/web-platform/tests/html/cross-origin-embedder-policy/about-blank-popup.https.html.headers
new file mode 100644
index 0000000000..6604450991
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-embedder-policy/about-blank-popup.https.html.headers
@@ -0,0 +1 @@
+Cross-Origin-Embedder-Policy: require-corp
diff --git a/testing/web-platform/tests/html/cross-origin-embedder-policy/blob.https.html b/testing/web-platform/tests/html/cross-origin-embedder-policy/blob.https.html
new file mode 100644
index 0000000000..ce72f247ef
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-embedder-policy/blob.https.html
@@ -0,0 +1,44 @@
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
diff --git a/testing/web-platform/tests/html/cross-origin-embedder-policy/blob.https.html.headers b/testing/web-platform/tests/html/cross-origin-embedder-policy/blob.https.html.headers
new file mode 100644
index 0000000000..6604450991
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-embedder-policy/blob.https.html.headers
@@ -0,0 +1 @@
+Cross-Origin-Embedder-Policy: require-corp
diff --git a/testing/web-platform/tests/html/cross-origin-embedder-policy/block-local-documents-inheriting-none.https.html b/testing/web-platform/tests/html/cross-origin-embedder-policy/block-local-documents-inheriting-none.https.html
new file mode 100644
index 0000000000..cf5176606e
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-embedder-policy/block-local-documents-inheriting-none.https.html
@@ -0,0 +1,112 @@
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
diff --git a/testing/web-platform/tests/html/cross-origin-embedder-policy/cache-storage-reporting-dedicated-worker.https.html b/testing/web-platform/tests/html/cross-origin-embedder-policy/cache-storage-reporting-dedicated-worker.https.html
new file mode 100644
index 0000000000..f4b2599141
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-embedder-policy/cache-storage-reporting-dedicated-worker.https.html
@@ -0,0 +1,51 @@
+
+
+
+  
+    Check COEP report are send for CacheStorage requests in DedicatedWorker
+  
+  
+  
+  
+  
+  
+  
+  
+
+
+
diff --git a/testing/web-platform/tests/html/cross-origin-embedder-policy/cache-storage-reporting-document.https.html b/testing/web-platform/tests/html/cross-origin-embedder-policy/cache-storage-reporting-document.https.html
new file mode 100644
index 0000000000..b998ba7926
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-embedder-policy/cache-storage-reporting-document.https.html
@@ -0,0 +1,58 @@
+
+
+
+  
+    Check COEP report are send for CacheStorage requests in Document.
+  
+  
+  
+  
+  
+  
+  
+  
+
+
+
diff --git a/testing/web-platform/tests/html/cross-origin-embedder-policy/cache-storage-reporting-service-worker.https.html b/testing/web-platform/tests/html/cross-origin-embedder-policy/cache-storage-reporting-service-worker.https.html
new file mode 100644
index 0000000000..96a328b2cc
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-embedder-policy/cache-storage-reporting-service-worker.https.html
@@ -0,0 +1,64 @@
+
+
+
+  
+    Check COEP report are send for CacheStorage requests in ServiceWorker.
+  
+  
+  
+  
+  
+  
+  
+
+
+
diff --git a/testing/web-platform/tests/html/cross-origin-embedder-policy/cache-storage-reporting-shared-worker.https.html b/testing/web-platform/tests/html/cross-origin-embedder-policy/cache-storage-reporting-shared-worker.https.html
new file mode 100644
index 0000000000..34af988fc6
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-embedder-policy/cache-storage-reporting-shared-worker.https.html
@@ -0,0 +1,49 @@
+
+
+
+  
+    Check COEP report are send for CacheStorage requests in SharedWorker
+  
+  
+  
+  
+  
+  
+  
+
+
+
diff --git a/testing/web-platform/tests/html/cross-origin-embedder-policy/coep-frame-javascript.https.html b/testing/web-platform/tests/html/cross-origin-embedder-policy/coep-frame-javascript.https.html
new file mode 100644
index 0000000000..089019dc2e
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-embedder-policy/coep-frame-javascript.https.html
@@ -0,0 +1,25 @@
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
diff --git a/testing/web-platform/tests/html/cross-origin-embedder-policy/coep-on-response-from-service-worker.https.html b/testing/web-platform/tests/html/cross-origin-embedder-policy/coep-on-response-from-service-worker.https.html
new file mode 100644
index 0000000000..b25b04ca4a
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-embedder-policy/coep-on-response-from-service-worker.https.html
@@ -0,0 +1,111 @@
+
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/cross-origin-embedder-policy/credentialless/META.yml b/testing/web-platform/tests/html/cross-origin-embedder-policy/credentialless/META.yml
new file mode 100644
index 0000000000..2bf6754a6b
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-embedder-policy/credentialless/META.yml
@@ -0,0 +1,7 @@
+spec: To be defined.
+suggested_reviewers:
+  - annevk
+  - arthursonzogni
+  - arturjanc
+  - camillelamy
+  - mikewest
diff --git a/testing/web-platform/tests/html/cross-origin-embedder-policy/credentialless/README.md b/testing/web-platform/tests/html/cross-origin-embedder-policy/credentialless/README.md
new file mode 100644
index 0000000000..86654525dd
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-embedder-policy/credentialless/README.md
@@ -0,0 +1,3 @@
+# Related documents:
+- https://github.com/mikewest/credentiallessness/
+- https://github.com/w3ctag/design-reviews/issues/582
diff --git a/testing/web-platform/tests/html/cross-origin-embedder-policy/credentialless/cache-storage.https.window.js b/testing/web-platform/tests/html/cross-origin-embedder-policy/credentialless/cache-storage.https.window.js
new file mode 100644
index 0000000000..573e6ac9cb
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-embedder-policy/credentialless/cache-storage.https.window.js
@@ -0,0 +1,150 @@
+// META: timeout=long
+// META: variant=?document
+// META: variant=?dedicated_worker
+// META: variant=?shared_worker
+// META: variant=?service_worker
+// META: script=/common/get-host-info.sub.js
+// META: script=/common/utils.js
+// META: script=/common/dispatcher/dispatcher.js
+// META: script=./resources/common.js
+
+// Fetch a resource and store it into CacheStorage from |storer| context. Then
+// check if it can be retrieved via CacheStorage.match from |retriever| context.
+const cacheStorageTest = (
+  description,
+  storer,
+  retriever,
+  resource_headers,
+  request_credential_mode,
+  expectation
+) => {
+  promise_test_parallel(async test => {
+    const cross_origin = get_host_info().HTTPS_REMOTE_ORIGIN;
+    const url = cross_origin + "/common/square.png?pipe=" + resource_headers +
+      `&${token()}`;
+    const this_token = token();
+
+    // Fetch a request from |stored|. Store the opaque response into
+    // CacheStorage.
+    send(storer, `
+      const cache = await caches.open("v1");
+      const fetch_request = new Request("${url}", {
+        mode: 'no-cors',
+        credentials: '${request_credential_mode}'
+      });
+      const fetch_response = await fetch(fetch_request);
+      await cache.put(fetch_request, fetch_response);
+      send("${this_token}", "stored");
+    `);
+    assert_equals(await receive(this_token), "stored");
+
+    // Retrieved it from |retriever|.
+    send(retriever, `
+      const cache = await caches.open("v1");
+      try {
+        const response = await cache.match("${url}");
+        send("${this_token}", "retrieved");
+      } catch (error) {
+        send("${this_token}", "error");
+      }
+    `);
+    assert_equals(await receive(this_token), expectation);
+  }, description);
+};
+
+// Execute the same set of tests for every type of execution contexts:
+// Documents, DedicatedWorkers, SharedWorkers, and ServiceWorkers. The results
+// should be independent of the context.
+const environment = location.search.substr(1);
+const constructor = environments[environment];
+
+const context_none = constructor(coep_none)[0];
+const context_credentialless = constructor(coep_credentialless)[0];
+const context_require_corp = constructor(coep_require_corp)[0];
+
+cacheStorageTest(`[${environment}] unsafe-none => unsafe-none`,
+  context_none,
+  context_none,
+  "",
+  "include",
+  "retrieved");
+cacheStorageTest(`[${environment}] unsafe-none => credentialless`,
+  context_none,
+  context_credentialless,
+  "",
+  "include",
+  "error");
+cacheStorageTest(`[${environment}] unsafe-none => credentialless (omit)`,
+  context_none,
+  context_credentialless,
+  "",
+  "omit",
+  "retrieved");
+cacheStorageTest(`[${environment}] unsafe-none => credentialless + CORP`,
+  context_none,
+  context_credentialless,
+  corp_cross_origin,
+  "include",
+  "retrieved");
+cacheStorageTest(`[${environment}] unsafe-none => require-corp`,
+  context_none,
+  context_require_corp,
+  "",
+  "include",
+  "error");
+cacheStorageTest(`[${environment}] unsafe-none => require-corp (omit)`,
+  context_none,
+  context_require_corp,
+  "",
+  "include",
+  "error");
+cacheStorageTest(`[${environment}] unsafe-none => require-corp + CORP`,
+  context_none,
+  context_require_corp,
+  corp_cross_origin,
+  "include",
+  "retrieved");
+
+cacheStorageTest(`[${environment}] credentialless => unsafe-none`,
+  context_credentialless,
+  context_none,
+  "",
+  "include",
+  "retrieved");
+cacheStorageTest(`[${environment}] credentialless => credentialless`,
+  context_credentialless,
+  context_credentialless,
+  "",
+  "include",
+  "retrieved");
+cacheStorageTest(`[${environment}] credentialless => require-corp`,
+  context_credentialless,
+  context_require_corp,
+  "",
+  "include",
+  "error");
+cacheStorageTest(`[${environment}] credentialless => require-corp + CORP`,
+  context_credentialless,
+  context_require_corp,
+  corp_cross_origin,
+  "include",
+  "retrieved");
+
+cacheStorageTest(`[${environment}] require_corp => unsafe-none`,
+  context_require_corp,
+  context_none,
+  corp_cross_origin,
+  "include",
+  "retrieved");
+cacheStorageTest(`[${environment}] require_corp => credentialless`,
+  context_require_corp,
+  context_credentialless,
+  corp_cross_origin,
+  "include",
+  "retrieved");
+cacheStorageTest(`[${environment}] require_corp => require-corp`,
+  context_require_corp,
+  context_require_corp,
+  corp_cross_origin,
+  "include",
+  "retrieved");
diff --git a/testing/web-platform/tests/html/cross-origin-embedder-policy/credentialless/cache.window.js b/testing/web-platform/tests/html/cross-origin-embedder-policy/credentialless/cache.window.js
new file mode 100644
index 0000000000..7d961804a0
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-embedder-policy/credentialless/cache.window.js
@@ -0,0 +1,84 @@
+// META: script=/common/get-host-info.sub.js
+// META: script=/common/utils.js
+// META: script=/common/dispatcher/dispatcher.js
+// META: script=./resources/common.js
+
+// With COEP:credentialless, requesting a resource without credentials MUST NOT
+// return a response requested with credentials. This would be a security
+// issue, since COEP:credentialless can be used to enable crossOriginIsolation.
+//
+// The test the behavior of the HTTP cache:
+// 1. b.com stores cookie.
+// 2. a.com(COEP:unsafe-none): request b.com's resource.
+// 3. a.com(COEP:credentialless): request b.com's resource.
+//
+// The first time, the resource is requested with credentials. The response is
+// served with Cache-Control: max-age=31536000. It enters the cache.
+// The second time, the resource is requested without credentials. The response
+// in the cache must not be returned.
+
+const cookie_key = "coep_cache_key";
+const cookie_value = "coep_cache_value";
+const same_origin = get_host_info().HTTPS_ORIGIN;
+const cross_origin = get_host_info().HTTPS_REMOTE_ORIGIN;
+
+const GetCookie = (response) => {
+ return parseCookies(JSON.parse(response))[cookie_key];
+}
+
+// "same_origin" document with COEP:unsafe-none.
+const w_coep_none_token = token();
+const w_coep_none_url = same_origin + executor_path + coep_none +
+  `&uuid=${w_coep_none_token}`
+const w_coep_none = window.open(w_coep_none_url);
+add_completion_callback(() => w_coep_none.close());
+
+// "same_origin" document with COEP:credentialles.
+const w_coep_credentialless_token = token();
+const w_coep_credentialless_url = same_origin + executor_path +
+  coep_credentialless + `&uuid=${w_coep_credentialless_token}`
+const w_coep_credentialless = window.open(w_coep_credentialless_url);
+add_completion_callback(() => w_coep_credentialless.close());
+
+const this_token = token();
+
+// A request toward a "cross-origin" cacheable response.
+const request_token = token();
+const request_url = cacheableShowRequestHeaders(cross_origin, request_token);
+
+promise_setup(async test => {
+  await setCookie(cross_origin, cookie_key, cookie_value + cookie_same_site_none);
+}, "Set cookie");
+
+// The "same-origin" COEP:unsafe-none document fetchs a "cross-origin"
+// resource. The request is sent with credentials.
+promise_setup(async test => {
+  send(w_coep_none_token, `
+    await fetch("${request_url}", {
+      mode : "no-cors",
+      credentials: "include",
+    });
+    send("${this_token}", "Resource fetched");
+  `);
+
+  assert_equals(await receive(this_token), "Resource fetched");
+  assert_equals(await receive(request_token).then(GetCookie), cookie_value);
+}, "Cache a response requested with credentials");
+
+// The "same-origin" COEP:credentialless document fetches the same resource
+// without credentials. The HTTP cache must not be used. Instead a second
+// request must be made without credentials.
+promise_test(async test => {
+  send(w_coep_credentialless_token, `
+    await fetch("${request_url}", {
+      mode : "no-cors",
+      credentials: "include",
+    });
+    send("${this_token}", "Resource fetched");
+  `);
+
+  assert_equals(await receive(this_token), "Resource fetched");
+
+  test.step_timeout(test.unreached_func("The HTTP cache has been used"), 1500);
+  assert_equals(await receive(request_token).then(GetCookie), undefined);
+}, "The HTTP cache must not be used");
diff --git a/testing/web-platform/tests/html/cross-origin-embedder-policy/credentialless/cross-origin-isolated.window.js b/testing/web-platform/tests/html/cross-origin-embedder-policy/credentialless/cross-origin-isolated.window.js
new file mode 100644
index 0000000000..361739f283
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-embedder-policy/credentialless/cross-origin-isolated.window.js
@@ -0,0 +1,49 @@
+// META: script=/common/get-host-info.sub.js
+// META: script=/common/utils.js
+// META: script=/common/dispatcher/dispatcher.js
+// META: script=./resources/common.js
+
+const http  = get_host_info().HTTP_ORIGIN;
+const https = get_host_info().HTTPS_ORIGIN;
+
+let crossOriginIsolatedTest = (
+    description,
+    origin ,
+    headers,
+    expect_crossOriginIsolated) => {
+  promise_test_parallel(async test => {
+    const w_token = token();
+    const w_url = origin + executor_path + headers + `&uuid=${w_token}`;
+    const w = window.open(w_url)
+    add_completion_callback(() => w.close());
+
+    const this_token = token();
+    send(w_token, `
+      if (window.crossOriginIsolated)
+        send("${this_token}", "crossOriginIsolated");
+      else
+        send("${this_token}", "not isolated")
+    `);
+    assert_equals(await receive(this_token), expect_crossOriginIsolated);
+  }, description);
+}
+
+crossOriginIsolatedTest("Main crossOriginIsolated case:",
+  https,  coop_same_origin +
+          coep_credentialless, "crossOriginIsolated");
+
+crossOriginIsolatedTest("Missing HTTPS:",
+  http,  coop_same_origin +
+         coep_credentialless, "not isolated");
+
+crossOriginIsolatedTest("Missing COOP:same-origin:",
+  https,  coep_credentialless, "not isolated");
+
+crossOriginIsolatedTest("Report-only:",
+  https, coop_same_origin +
+         coep_report_only_credentialless, "not isolated");
+
+crossOriginIsolatedTest("Report-only + enforced:",
+  https, coop_same_origin +
+         coep_credentialless +
+         coep_report_only_credentialless, "crossOriginIsolated");
diff --git a/testing/web-platform/tests/html/cross-origin-embedder-policy/credentialless/dedicated-worker.https.window.js b/testing/web-platform/tests/html/cross-origin-embedder-policy/credentialless/dedicated-worker.https.window.js
new file mode 100644
index 0000000000..b06ec56210
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-embedder-policy/credentialless/dedicated-worker.https.window.js
@@ -0,0 +1,137 @@
+// META: timeout=long
+// META: script=/common/get-host-info.sub.js
+// META: script=/common/utils.js
+// META: script=/common/dispatcher/dispatcher.js
+// META: script=./resources/common.js
+
+const same_origin = get_host_info().HTTPS_ORIGIN;
+const cross_origin = get_host_info().HTTPS_REMOTE_ORIGIN;
+const cookie_key = "credentialless_dedicated_worker";
+const cookie_same_origin = "same_origin";
+const cookie_cross_origin = "cross_origin";
+
+promise_test(async test => {
+
+  await Promise.all([
+    setCookie(same_origin, cookie_key, cookie_same_origin +
+      cookie_same_site_none),
+    setCookie(cross_origin, cookie_key, cookie_cross_origin +
+      cookie_same_site_none),
+  ]);
+
+  // One window with COEP:none. (control)
+  const w_control_token = token();
+  const w_control_url = same_origin + executor_path +
+    coep_none + `&uuid=${w_control_token}`
+  const w_control = window.open(w_control_url);
+  add_completion_callback(() => w_control.close());
+
+  // One window with COEP:credentialless. (experiment)
+  const w_credentialless_token = token();
+  const w_credentialless_url = same_origin + executor_path +
+    coep_credentialless + `&uuid=${w_credentialless_token}`;
+  const w_credentialless = window.open(w_credentialless_url);
+  add_completion_callback(() => w_credentialless.close());
+
+  let GetCookie = (response) => {
+    const headers_credentialless = JSON.parse(response);
+    return parseCookies(headers_credentialless)[cookie_key];
+  }
+
+  const dedicatedWorkerTest = function(
+    description, origin, coep_for_worker,
+    expected_cookies_control,
+    expected_cookies_credentialless) {
+    promise_test_parallel(async t => {
+      // Create workers for both window.
+      const worker_token_1 = token();
+      const worker_token_2 = token();
+
+      // Used to check for errors creating the DedicatedWorker.
+      const worker_error_1 = token();
+      const worker_error_2 = token();
+
+      const w_worker_src_1 = same_origin + executor_worker_path +
+        coep_for_worker + `&uuid=${worker_token_1}`;
+      send(w_control_token, `
+        new Worker("${w_worker_src_1}", {});
+        worker.onerror = () => {
+          send("${worker_error_1}", "Worker blocked");
+        }
+      `);
+
+      const w_worker_src_2 = same_origin + executor_worker_path +
+        coep_for_worker + `&uuid=${worker_token_2}`;
+      send(w_credentialless_token, `
+        const worker = new Worker("${w_worker_src_2}", {});
+        worker.onerror = () => {
+          send("${worker_error_2}", "Worker blocked");
+        }
+      `);
+
+      // Fetch resources with the workers.
+      const request_token_1 = token();
+      const request_token_2 = token();
+      const request_url_1 = showRequestHeaders(origin, request_token_1);
+      const request_url_2 = showRequestHeaders(origin, request_token_2);
+
+      send(worker_token_1, `
+        fetch("${request_url_1}", {mode: 'no-cors', credentials: 'include'})
+      `);
+      send(worker_token_2, `
+        fetch("${request_url_2}", {mode: 'no-cors', credentials: 'include'});
+      `);
+
+      const response_control = await Promise.race([
+        receive(worker_error_1),
+        receive(request_token_1).then(GetCookie)
+      ]);
+      assert_equals(response_control,
+        expected_cookies_control,
+        "coep:none => ");
+
+      const response_credentialless = await Promise.race([
+        receive(worker_error_2),
+        receive(request_token_2).then(GetCookie)
+      ]);
+      assert_equals(response_credentialless,
+        expected_cookies_credentialless,
+        "coep:credentialless => ");
+    }, `fetch ${description}`)
+  };
+
+  dedicatedWorkerTest("same-origin + credentialless worker",
+    same_origin, coep_credentialless,
+    cookie_same_origin,
+    cookie_same_origin);
+
+  dedicatedWorkerTest("same-origin + require_corp worker",
+    same_origin, coep_require_corp,
+    cookie_same_origin,
+    cookie_same_origin);
+
+  dedicatedWorkerTest("same-origin",
+    same_origin, coep_none,
+    cookie_same_origin,
+    "Worker blocked");
+
+  dedicatedWorkerTest("cross-origin",
+    cross_origin, coep_none,
+    cookie_cross_origin,
+    "Worker blocked" // Owner's policy is credentialles, so we can't
+                     // create a worker with coep_none.
+  );
+
+  dedicatedWorkerTest("cross-origin + credentialless worker",
+    cross_origin, coep_credentialless,
+    undefined, // Worker created successfully with credentialless, and fetch doesn't get credentials
+    undefined // Worker created successfully with credentialless, and fetch doesn't get credentials
+  );
+
+  dedicatedWorkerTest("cross-origin + require_corp worker",
+    cross_origin, coep_require_corp,
+    cookie_cross_origin,
+    cookie_cross_origin // The worker's policy is require_corp and doing a
+                        // fetch within it has nothing to do with the Owner's policy.
+  );
+})
diff --git a/testing/web-platform/tests/html/cross-origin-embedder-policy/credentialless/fetch.https.window.js b/testing/web-platform/tests/html/cross-origin-embedder-policy/credentialless/fetch.https.window.js
new file mode 100644
index 0000000000..6ea94d0a19
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-embedder-policy/credentialless/fetch.https.window.js
@@ -0,0 +1,127 @@
+// META: script=/common/get-host-info.sub.js
+// META: script=/common/utils.js
+// META: script=/common/dispatcher/dispatcher.js
+// META: script=./resources/common.js
+
+promise_test(async test => {
+  const same_origin = get_host_info().HTTPS_ORIGIN;
+  const cross_origin = get_host_info().HTTPS_REMOTE_ORIGIN;
+  const cookie_key = "coep_credentialless_fetch";
+  const cookie_same_origin = "same_origin";
+  const cookie_cross_origin = "cross_origin";
+
+  await Promise.all([
+    setCookie(same_origin, cookie_key, cookie_same_origin +
+      cookie_same_site_none),
+    setCookie(cross_origin, cookie_key, cookie_cross_origin +
+      cookie_same_site_none),
+  ]);
+
+  // One window with COEP:none. (control)
+  const w_control_token = token();
+  const w_control_url = same_origin + executor_path +
+    coep_none + `&uuid=${w_control_token}`
+  const w_control = window.open(w_control_url);
+  add_completion_callback(() => w_control.close());
+
+  // One window with COEP:credentialless. (experiment)
+  const w_credentialless_token = token();
+  const w_credentialless_url = same_origin + executor_path +
+    coep_credentialless + `&uuid=${w_credentialless_token}`;
+  const w_credentialless = window.open(w_credentialless_url);
+  add_completion_callback(() => w_credentialless.close());
+
+  const fetchTest = function(
+    description, origin, mode, credentials,
+    expected_cookies_control,
+    expected_cookies_credentialless)
+  {
+    promise_test_parallel(async test => {
+      const token_1 = token();
+      const token_2 = token();
+
+      send(w_control_token, `
+        fetch("${showRequestHeaders(origin, token_1)}", {
+          mode:"${mode}",
+          credentials: "${credentials}",
+        });
+      `);
+      send(w_credentialless_token, `
+        fetch("${showRequestHeaders(origin, token_2)}", {
+          mode:"${mode}",
+          credentials: "${credentials}",
+        });
+      `);
+
+      const headers_control = JSON.parse(await receive(token_1));
+      const headers_credentialless = JSON.parse(await receive(token_2));
+
+      assert_equals(parseCookies(headers_control)[cookie_key],
+        expected_cookies_control,
+        "coep:none => ");
+      assert_equals(parseCookies(headers_credentialless)[cookie_key],
+        expected_cookies_credentialless,
+        "coep:credentialless => ");
+    }, `fetch ${description}`)
+  };
+
+  // Cookies are never sent with credentials='omit'
+  fetchTest("same-origin + no-cors + credentials:omit",
+    same_origin, 'no-cors', 'omit',
+    undefined,
+    undefined);
+  fetchTest("same-origin + cors + credentials:omit",
+    same_origin, 'cors', 'omit',
+    undefined,
+    undefined);
+  fetchTest("cross-origin + no-cors + credentials:omit",
+    cross_origin, 'no-cors', 'omit',
+    undefined,
+    undefined);
+  fetchTest("cross-origin + cors + credentials:omit",
+    cross_origin, 'cors', 'omit',
+    undefined,
+    undefined);
+
+  // Same-origin request contains Cookies.
+  fetchTest("same-origin + no-cors + credentials:include",
+    same_origin, 'no-cors', 'include',
+    cookie_same_origin,
+    cookie_same_origin);
+  fetchTest("same-origin + cors + credentials:include",
+    same_origin, 'cors', 'include',
+    cookie_same_origin,
+    cookie_same_origin);
+  fetchTest("same-origin + no-cors + credentials:same-origin",
+    same_origin, 'no-cors', 'same-origin',
+    cookie_same_origin,
+    cookie_same_origin);
+  fetchTest("same-origin + cors + credentials:same-origin",
+    same_origin, 'cors', 'same-origin',
+    cookie_same_origin,
+    cookie_same_origin);
+
+  // Cross-origin CORS requests contains Cookies, if credentials mode is set to
+  // 'include'. This does not depends on COEP.
+  fetchTest("cross-origin + cors + credentials:include",
+    cross_origin, 'cors', 'include',
+    cookie_cross_origin,
+    cookie_cross_origin);
+  fetchTest("cross-origin + cors + same-origin-credentials",
+    cross_origin, 'cors', 'same-origin',
+    undefined,
+    undefined);
+
+  // Cross-origin no-CORS requests includes Cookies when:
+  // 1. credentials mode is 'include'
+  // 2. COEP: is not credentialless.
+  fetchTest("cross-origin + no-cors + credentials:include",
+    cross_origin, 'no-cors', 'include',
+    cookie_cross_origin,
+    undefined);
+
+  fetchTest("cross-origin + no-cors + credentials:same-origin",
+    cross_origin, 'no-cors', 'same-origin',
+    undefined,
+    undefined);
+}, "");
diff --git a/testing/web-platform/tests/html/cross-origin-embedder-policy/credentialless/iframe-coep-credentialless.https.window.js b/testing/web-platform/tests/html/cross-origin-embedder-policy/credentialless/iframe-coep-credentialless.https.window.js
new file mode 100644
index 0000000000..f9d9fcb932
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-embedder-policy/credentialless/iframe-coep-credentialless.https.window.js
@@ -0,0 +1,37 @@
+// META: variant=?1-4
+// META: variant=?5-9
+// META: variant=?9-last
+// META: script=/common/get-host-info.sub.js
+// META: script=/common/utils.js
+// META: script=/common/dispatcher/dispatcher.js
+// META: script=./resources/common.js
+// META: script=./resources/iframeTest.js
+// META: script=/common/subset-tests.js
+
+const parent_coep_credentialless = newWindow(coep_credentialless);
+subsetTest(iframeTest, "COEP:credentialless embeds same-origin COEP:none",
+  parent_coep_credentialless, same_origin, coep_none, EXPECT_BLOCK);
+subsetTest(iframeTest, "COEP:credentialless embeds cross-origin COEP:none",
+  parent_coep_credentialless, cross_origin, coep_none, EXPECT_BLOCK);
+subsetTest(iframeTest, "COEP:credentialless embeds same-origin COEP:credentialless",
+  parent_coep_credentialless, same_origin, coep_credentialless, EXPECT_LOAD);
+subsetTest(iframeTest, "COEP:credentialless embeds cross-origin COEP:credentialless",
+  parent_coep_credentialless, cross_origin, coep_credentialless, EXPECT_BLOCK);
+subsetTest(iframeTest, "COEP:credentialless embeds same-origin COEP:require-corp",
+  parent_coep_credentialless, same_origin, coep_require_corp, EXPECT_LOAD);
+subsetTest(iframeTest, "COEP:credentialless embeds cross-origin COEP:require-corp",
+  parent_coep_credentialless, cross_origin, coep_require_corp, EXPECT_BLOCK);
+
+// Using CORP:cross-origin might unblock previously blocked iframes.
+subsetTest(iframeTestCORP, "COEP:credentialless embeds same-origin COEP:none",
+  parent_coep_credentialless, same_origin, coep_none, EXPECT_BLOCK);
+subsetTest(iframeTestCORP, "COEP:credentialless embeds cross-origin COEP:none",
+  parent_coep_credentialless, cross_origin, coep_none, EXPECT_BLOCK);
+subsetTest(iframeTestCORP, "COEP:credentialless embeds same-origin COEP:credentialless",
+  parent_coep_credentialless, same_origin, coep_credentialless, EXPECT_LOAD);
+subsetTest(iframeTestCORP, "COEP:credentialless embeds cross-origin COEP:credentialless",
+  parent_coep_credentialless, cross_origin, coep_credentialless, EXPECT_LOAD);
+subsetTest(iframeTestCORP, "COEP:credentialless embeds same-origin COEP:require-corp",
+  parent_coep_credentialless, same_origin, coep_require_corp, EXPECT_LOAD);
+subsetTest(iframeTestCORP, "COEP:credentialless embeds cross-origin COEP:require-corp",
+  parent_coep_credentialless, cross_origin, coep_require_corp, EXPECT_LOAD);
diff --git a/testing/web-platform/tests/html/cross-origin-embedder-policy/credentialless/iframe-coep-none.https.window.js b/testing/web-platform/tests/html/cross-origin-embedder-policy/credentialless/iframe-coep-none.https.window.js
new file mode 100644
index 0000000000..4f50b8d407
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-embedder-policy/credentialless/iframe-coep-none.https.window.js
@@ -0,0 +1,22 @@
+// META: variant=?1-4
+// META: variant=?5-last
+// META: script=/common/get-host-info.sub.js
+// META: script=/common/utils.js
+// META: script=/common/dispatcher/dispatcher.js
+// META: script=./resources/common.js
+// META: script=./resources/iframeTest.js
+// META: script=/common/subset-tests.js
+
+const parent_coep_none = newWindow(coep_none);
+subsetTest(iframeTest, "COEP:none embeds same-origin COEP:none",
+  parent_coep_none, same_origin, coep_none, EXPECT_LOAD);
+subsetTest(iframeTest, "COEP:none embeds cross-origin COEP:none",
+  parent_coep_none, cross_origin, coep_none, EXPECT_LOAD);
+subsetTest(iframeTest, "COEP:none embeds same-origin COEP:credentialless",
+  parent_coep_none, same_origin, coep_credentialless, EXPECT_LOAD);
+subsetTest(iframeTest, "COEP:none embeds cross-origin COEP:credentialless",
+  parent_coep_none, cross_origin, coep_credentialless, EXPECT_LOAD);
+subsetTest(iframeTest, "COEP:none embeds same-origin COEP:require-corp",
+  parent_coep_none, same_origin, coep_require_corp, EXPECT_LOAD);
+subsetTest(iframeTest, "COEP:none embeds cross-origin COEP:require-corp",
+  parent_coep_none, cross_origin, coep_require_corp, EXPECT_LOAD);
diff --git a/testing/web-platform/tests/html/cross-origin-embedder-policy/credentialless/iframe-coep-redirect.https.window.js b/testing/web-platform/tests/html/cross-origin-embedder-policy/credentialless/iframe-coep-redirect.https.window.js
new file mode 100644
index 0000000000..a9f6a1c88e
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-embedder-policy/credentialless/iframe-coep-redirect.https.window.js
@@ -0,0 +1,41 @@
+// META: variant=?1-4
+// META: variant=?5-last
+// META: script=/common/get-host-info.sub.js
+// META: script=/common/utils.js
+// META: script=/common/dispatcher/dispatcher.js
+// META: script=./resources/common.js
+// META: script=./resources/iframeTest.js
+promise_test(async test => {
+  const test_token = token();
+  const child_token = token();
+
+  const redirecting_child_url = cross_origin + "/common/dispatcher/executor.html?uuid=" + child_token;
+
+  const child_url =
+    same_origin +
+    "/html/cross-origin-embedder-policy/credentialless/resources/redirect_none_to_credentialless.py?redirectTo=" + redirecting_child_url;
+
+  await send(newWindow(coep_credentialless), `
+    let iframe = document.createElement("iframe");
+    iframe.src = "${child_url}";
+    document.body.appendChild(iframe);
+  `);
+
+  await send(child_token, `
+    send("${test_token}", "load");
+  `);
+
+  // There are no interoperable ways to check an iframe failed to load. So a
+  // timeout is being used.
+  // See https://github.com/whatwg/html/issues/125
+  // Use a shorter timeout when it is expected to be reached.
+  // - The long delay reduces the false-positive rate. False-positive causes
+  //   stability problems on bot, so a big delay is used to vanish them.
+  //   https://crbug.com/1215956.
+  // - The short delay avoids delaying too much the test(s) for nothing and
+  //   timing out. False-negative are not a problem, they just need not to
+  //   overwhelm the true-negative, which is trivial to get.
+  step_timeout(()=>send(test_token, "block"), 6000);
+
+  assert_equals(await receive(test_token), EXPECT_LOAD);
+});
diff --git a/testing/web-platform/tests/html/cross-origin-embedder-policy/credentialless/iframe-coep-require-corp.https.window.js b/testing/web-platform/tests/html/cross-origin-embedder-policy/credentialless/iframe-coep-require-corp.https.window.js
new file mode 100644
index 0000000000..a70d4ff8fc
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-embedder-policy/credentialless/iframe-coep-require-corp.https.window.js
@@ -0,0 +1,38 @@
+// META: variant=?1-4
+// META: variant=?5-9
+// META: variant=?9-last
+// META: script=/common/get-host-info.sub.js
+// META: script=/common/utils.js
+// META: script=/common/dispatcher/dispatcher.js
+// META: script=./resources/common.js
+// META: script=./resources/iframeTest.js
+// META: script=/common/subset-tests.js
+
+const parent_coep_require_corp = newWindow(coep_require_corp);
+
+subsetTest(iframeTest, "COEP:require-corp embeds same-origin COEP:none",
+  parent_coep_require_corp, same_origin, coep_none, EXPECT_BLOCK);
+subsetTest(iframeTest, "COEP:require-corp embeds cross-origin COEP:none",
+  parent_coep_require_corp, cross_origin, coep_none, EXPECT_BLOCK);
+subsetTest(iframeTest, "COEP:require-corp embeds same-origin COEP:credentialless",
+  parent_coep_require_corp, same_origin, coep_credentialless, EXPECT_LOAD);
+subsetTest(iframeTest, "COEP:require-corp embeds cross-origin COEP:credentialless",
+  parent_coep_require_corp, cross_origin, coep_credentialless, EXPECT_BLOCK);
+subsetTest(iframeTest, "COEP:require-corp embeds same-origin COEP:require-corp",
+  parent_coep_require_corp, same_origin, coep_require_corp, EXPECT_LOAD);
+subsetTest(iframeTest, "COEP:require-corp embeds cross-origin COEP:require-corp",
+  parent_coep_require_corp, cross_origin, coep_require_corp, EXPECT_BLOCK);
+
+// Using CORP:cross-origin might unblock previously blocked iframes.
+subsetTest(iframeTestCORP, "COEP:require-corp embeds same-origin COEP:none",
+  parent_coep_require_corp, same_origin, coep_none, EXPECT_BLOCK);
+subsetTest(iframeTestCORP, "COEP:require-corp embeds cross-origin COEP:none",
+  parent_coep_require_corp, cross_origin, coep_none, EXPECT_BLOCK);
+subsetTest(iframeTestCORP, "COEP:require-corp embeds same-origin COEP:credentialless",
+  parent_coep_require_corp, same_origin, coep_credentialless, EXPECT_LOAD);
+subsetTest(iframeTestCORP, "COEP:require-corp embeds cross-origin COEP:credentialless",
+  parent_coep_require_corp, cross_origin, coep_credentialless, EXPECT_LOAD);
+subsetTest(iframeTestCORP, "COEP:require-corp embeds same-origin COEP:require-corp",
+  parent_coep_require_corp, same_origin, coep_require_corp, EXPECT_LOAD);
+subsetTest(iframeTestCORP, "COEP:require-corp embeds cross-origin COEP:require-corp",
+  parent_coep_require_corp, cross_origin, coep_require_corp, EXPECT_LOAD);
diff --git a/testing/web-platform/tests/html/cross-origin-embedder-policy/credentialless/iframe.window.js b/testing/web-platform/tests/html/cross-origin-embedder-policy/credentialless/iframe.window.js
new file mode 100644
index 0000000000..d7a9c1e170
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-embedder-policy/credentialless/iframe.window.js
@@ -0,0 +1,47 @@
+// META: timeout=long
+// META: script=/common/get-host-info.sub.js
+// META: script=/common/utils.js
+// META: script=/common/dispatcher/dispatcher.js
+// META: script=./resources/common.js
+const same_origin = get_host_info().HTTPS_ORIGIN;
+const cross_origin = get_host_info().HTTPS_REMOTE_ORIGIN;
+const cookie_key = "coep_redirect";
+const cookie_same_origin = "same_origin";
+const cookie_cross_origin = "cross_origin";
+
+// Operate on a window with COEP:credentialless.
+const w_token = token();
+const w_url = same_origin + executor_path + coep_credentialless +
+              `&uuid=${w_token}`
+const w = window.open(w_url);
+add_completion_callback(() => w.close());
+
+// Check whether COEP:credentialless applies to navigation request. It
+// shouldn't.
+const iframeTest = function(name, origin, expected_cookies) {
+  promise_test_parallel(async test => {
+    const token_request = token();
+    const url = showRequestHeaders(origin, token_request);
+
+    send(w_token, `
+      const iframe = document.createElement("iframe");
+      iframe.src = "${url}";
+      document.body.appendChild(iframe);
+    `);
+
+    const headers = JSON.parse(await receive(token_request));
+    assert_equals(parseCookies(headers)[cookie_key], expected_cookies);
+  }, name)
+};
+
+promise_test_parallel(async test => {
+  await Promise.all([
+    setCookie(same_origin, cookie_key, cookie_same_origin +
+      cookie_same_site_none),
+    setCookie(cross_origin, cookie_key, cookie_cross_origin +
+      cookie_same_site_none),
+  ]);
+
+  iframeTest("same-origin", same_origin, cookie_same_origin);
+  iframeTest("cross-origin", cross_origin, cookie_cross_origin);
+}, "Setup");
diff --git a/testing/web-platform/tests/html/cross-origin-embedder-policy/credentialless/image.https.window.js b/testing/web-platform/tests/html/cross-origin-embedder-policy/credentialless/image.https.window.js
new file mode 100644
index 0000000000..2e9166d1bb
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-embedder-policy/credentialless/image.https.window.js
@@ -0,0 +1,97 @@
+// META: script=/common/get-host-info.sub.js
+// META: script=/common/utils.js
+// META: script=/common/dispatcher/dispatcher.js
+// META: script=./resources/common.js
+
+promise_test_parallel(async test => {
+  const same_origin = get_host_info().HTTPS_ORIGIN;
+  const cross_origin = get_host_info().HTTPS_REMOTE_ORIGIN;
+  const cookie_key = "coep_credentialless_image";
+  const cookie_same_origin = "same_origin";
+  const cookie_cross_origin = "cross_origin";
+
+  await Promise.all([
+    setCookie(same_origin, cookie_key, cookie_same_origin +
+      cookie_same_site_none),
+    setCookie(cross_origin, cookie_key, cookie_cross_origin +
+      cookie_same_site_none),
+  ]);
+
+  // One window with COEP:none. (control)
+  const w_control_token = token();
+  const w_control_url = same_origin + executor_path +
+    coep_none + `&uuid=${w_control_token}`
+  const w_control = window.open(w_control_url);
+  add_completion_callback(() => w_control.close());
+
+  // One window with COEP:credentialless. (experiment)
+  const w_credentialless_token = token();
+  const w_credentialless_url = same_origin + executor_path +
+    coep_credentialless + `&uuid=${w_credentialless_token}`;
+  const w_credentialless = window.open(w_credentialless_url);
+  add_completion_callback(() => w_credentialless.close());
+
+  let imgTest = function(
+    description, origin, mode,
+    expected_cookies_control,
+    expected_cookies_credentialless)
+  {
+    promise_test_parallel(async test => {
+      const token_1 = token();
+      const token_2 = token();
+
+      send(w_control_token, `
+        let img = document.createElement("img");
+        img.src = "${showRequestHeaders(origin, token_1)}";
+        ${mode};
+        document.body.appendChild(img);
+      `);
+      send(w_credentialless_token, `
+        let img = document.createElement("img");
+        img.src = "${showRequestHeaders(origin, token_2)}";
+        ${mode};
+        document.body.appendChild(img);
+      `);
+
+      const headers_control = JSON.parse(await receive(token_1));
+      const headers_credentialless = JSON.parse(await receive(token_2));
+
+      assert_equals(parseCookies(headers_control)[cookie_key],
+        expected_cookies_control,
+        "coep:none => ");
+      assert_equals(parseCookies(headers_credentialless)[cookie_key],
+        expected_cookies_credentialless,
+        "coep:credentialless => ");
+    }, `image ${description}`)
+  };
+
+  // Same-origin request always contains Cookies:
+  imgTest("same-origin + undefined",
+    same_origin, '',
+    cookie_same_origin,
+    cookie_same_origin);
+  imgTest("same-origin + anonymous",
+    same_origin, 'img.crossOrigin="anonymous"',
+    cookie_same_origin,
+    cookie_same_origin);
+  imgTest("same-origin + use-credentials",
+    same_origin, 'img.crossOrigin="use-credentials"',
+    cookie_same_origin,
+    cookie_same_origin);
+
+  // Cross-origin request contains cookies in the following cases:
+  // - COEP:credentialless is not set.
+  // - img.crossOrigin is `use-credentials`.
+  imgTest("cross-origin + undefined",
+    cross_origin, '',
+    cookie_cross_origin,
+    undefined);
+  imgTest("cross-origin + anonymous",
+    cross_origin, 'img.crossOrigin="anonymous"',
+    undefined,
+    undefined);
+  imgTest("cross-origin + use-credentials",
+    cross_origin, 'img.crossOrigin="use-credentials"',
+    cookie_cross_origin,
+    cookie_cross_origin);
+}, "Main");
diff --git a/testing/web-platform/tests/html/cross-origin-embedder-policy/credentialless/link.https.window.js b/testing/web-platform/tests/html/cross-origin-embedder-policy/credentialless/link.https.window.js
new file mode 100644
index 0000000000..0a0f8eef66
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-embedder-policy/credentialless/link.https.window.js
@@ -0,0 +1,99 @@
+// META: script=/common/get-host-info.sub.js
+// META: script=/common/utils.js
+// META: script=/common/dispatcher/dispatcher.js
+// META: script=./resources/common.js
+
+promise_test_parallel(async test => {
+  const same_origin = get_host_info().HTTPS_ORIGIN;
+  const cross_origin = get_host_info().HTTPS_REMOTE_ORIGIN;
+  const cookie_key = "coep_credentialless_link";
+  const cookie_same_origin = "same_origin";
+  const cookie_cross_origin = "cross_origin";
+
+  await Promise.all([
+    setCookie(same_origin, cookie_key, cookie_same_origin +
+      cookie_same_site_none),
+    setCookie(cross_origin, cookie_key, cookie_cross_origin +
+      cookie_same_site_none),
+  ]);
+
+  // One window with COEP:none. (control)
+  const w_control_token = token();
+  const w_control_url = same_origin + executor_path +
+    coep_none + `&uuid=${w_control_token}`
+  const w_control = window.open(w_control_url);
+  add_completion_callback(() => w_control.close());
+
+  // One window with COEP:credentialless. (experiment)
+  const w_credentialless_token = token();
+  const w_credentialless_url = same_origin + executor_path +
+    coep_credentialless + `&uuid=${w_credentialless_token}`;
+  const w_credentialless = window.open(w_credentialless_url);
+  add_completion_callback(() => w_credentialless.close());
+
+  let linkTest = function(
+    description, origin, mode,
+    expected_cookies_control,
+    expected_cookies_credentialless)
+  {
+    promise_test_parallel(async test => {
+      const token_1 = token();
+      const token_2 = token();
+
+      send(w_control_token, `
+        let link = document.createElement("link");
+        link.href = "${showRequestHeaders(origin, token_1)}";
+        link.rel = "stylesheet";
+        ${mode}
+        document.head.appendChild(link);
+      `);
+      send(w_credentialless_token, `
+        let link = document.createElement("link");
+        link.href = "${showRequestHeaders(origin, token_2)}";
+        link.rel = "stylesheet";
+        ${mode}
+        document.head.appendChild(link);
+      `);
+
+      const headers_control = JSON.parse(await receive(token_1));
+      const headers_credentialless = JSON.parse(await receive(token_2));
+
+      assert_equals(parseCookies(headers_control)[cookie_key],
+        expected_cookies_control,
+        "coep:none => ");
+      assert_equals(parseCookies(headers_credentialless)[cookie_key],
+        expected_cookies_credentialless,
+        "coep:credentialless => ");
+    }, `link ${description}`)
+  };
+
+  // Same-origin request always contains Cookies:
+  linkTest("same-origin + undefined",
+    same_origin, '',
+    cookie_same_origin,
+    cookie_same_origin);
+  linkTest("same-origin + anonymous",
+    same_origin, 'link.crossOrigin="anonymous"',
+    cookie_same_origin,
+    cookie_same_origin);
+  linkTest("same-origin + use-credentials",
+    same_origin, 'link.crossOrigin="use-credentials"',
+    cookie_same_origin,
+    cookie_same_origin);
+
+  // Cross-origin request contains cookies in the following cases:
+  // - COEP:credentialless is not set.
+  // - link.crossOrigin is `use-credentials`.
+  linkTest("cross-origin + undefined",
+    cross_origin, '',
+    cookie_cross_origin,
+    undefined);
+  linkTest("cross-origin + anonymous",
+    cross_origin, 'link.crossOrigin="anonymous"',
+    undefined,
+    undefined);
+  linkTest("cross-origin + use-credentials",
+    cross_origin, 'link.crossOrigin="use-credentials"',
+    cookie_cross_origin,
+    cookie_cross_origin);
+}, "Main");
diff --git a/testing/web-platform/tests/html/cross-origin-embedder-policy/credentialless/redirect.window.js b/testing/web-platform/tests/html/cross-origin-embedder-policy/credentialless/redirect.window.js
new file mode 100644
index 0000000000..db8ca08d36
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-embedder-policy/credentialless/redirect.window.js
@@ -0,0 +1,55 @@
+// META: timeout=long
+// META: script=/common/get-host-info.sub.js
+// META: script=/common/utils.js
+// META: script=/common/dispatcher/dispatcher.js
+// META: script=./resources/common.js
+const same_origin = get_host_info().HTTPS_ORIGIN;
+const cross_origin = get_host_info().HTTPS_REMOTE_ORIGIN;
+const cookie_key = "coep_redirect";
+const cookie_same_origin = "same_origin";
+const cookie_cross_origin = "cross_origin";
+
+// Operate on a window with COEP:credentialless.:
+const w_token = token();
+const w_url = same_origin + executor_path + coep_credentialless +
+              `&uuid=${w_token}`
+const w = window.open(w_url);
+add_completion_callback(() => w.close());
+
+let redirectTest = function(name,
+                            redirect_origin,
+                            final_origin,
+                            expected_cookies) {
+  promise_test_parallel(async test => {
+    const token_request = token();
+    const url = redirect_origin + "/common/redirect.py?location=" +
+      encodeURIComponent(showRequestHeaders(final_origin, token_request));
+
+    send(w_token, `
+      const img = document.createElement("img");
+      img.src = "${url}";
+      document.body.appendChild(img);
+    `);
+
+    const headers = JSON.parse(await receive(token_request));
+    assert_equals(parseCookies(headers)[cookie_key], expected_cookies);
+  }, name)
+};
+
+promise_test_parallel(async test => {
+  await Promise.all([
+    setCookie(same_origin, cookie_key, cookie_same_origin +
+      cookie_same_site_none),
+    setCookie(cross_origin, cookie_key, cookie_cross_origin +
+      cookie_same_site_none),
+  ]);
+
+  redirectTest("same-origin -> same-origin",
+    same_origin, same_origin, cookie_same_origin);
+  redirectTest("same-origin -> cross-origin",
+    same_origin, cross_origin, undefined)
+  redirectTest("cross-origin -> same-origin",
+    cross_origin, same_origin, undefined);
+  redirectTest("cross-origin -> cross-origin",
+    cross_origin, cross_origin, undefined);
+}, "Setup");
diff --git a/testing/web-platform/tests/html/cross-origin-embedder-policy/credentialless/reporting-navigation.https.window.js b/testing/web-platform/tests/html/cross-origin-embedder-policy/credentialless/reporting-navigation.https.window.js
new file mode 100644
index 0000000000..1d62996e38
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-embedder-policy/credentialless/reporting-navigation.https.window.js
@@ -0,0 +1,139 @@
+// META: timeout=long
+// META: script=/common/get-host-info.sub.js
+// META: script=./resources/common.js
+const {ORIGIN, REMOTE_ORIGIN} = get_host_info();
+const COEP = '|header(cross-origin-embedder-policy,credentialless)';
+const COEP_RO =
+  '|header(cross-origin-embedder-policy-report-only,credentialless)';
+const CORP_CROSS_ORIGIN =
+  '|header(cross-origin-resource-policy,cross-origin)';
+const FRAME_URL = `${ORIGIN}/common/blank.html?pipe=`;
+const REMOTE_FRAME_URL = `${REMOTE_ORIGIN}/common/blank.html?pipe=`;
+
+function checkCorpReport(report, contextUrl, blockedUrl, disposition) {
+  assert_equals(report.type, 'coep');
+  assert_equals(report.url, contextUrl);
+  assert_equals(report.body.type, 'corp');
+  assert_equals(report.body.blockedURL, blockedUrl);
+  assert_equals(report.body.disposition, disposition);
+  assert_equals(report.body.destination, 'iframe');
+}
+
+function checkCoepMismatchReport(report, contextUrl, blockedUrl, disposition) {
+  assert_equals(report.type, 'coep');
+  assert_equals(report.url, contextUrl);
+  assert_equals(report.body.type, 'navigation');
+  assert_equals(report.body.blockedURL, blockedUrl);
+  assert_equals(report.body.disposition, disposition);
+}
+
+function loadFrame(document, url) {
+  return new Promise((resolve, reject) => {
+    const frame = document.createElement('iframe');
+    frame.src = url;
+    frame.onload = () => resolve(frame);
+    frame.onerror = reject;
+    document.body.appendChild(frame);
+  });
+}
+
+// |parentSuffix| is a suffix for the parent frame URL.
+// |targetUrl| is a URL for the target frame.
+async function loadFrames(test, parentSuffix, targetUrl) {
+  const frame = await loadFrame(document, FRAME_URL + parentSuffix);
+  test.add_cleanup(() => frame.remove());
+  // Here we don't need "await". This loading may or may not succeed, and
+  // we're not interested in the result.
+  loadFrame(frame.contentDocument, targetUrl);
+
+  return frame;
+}
+
+async function observeReports(global, expected_count) {
+  const reports = [];
+  const receivedEveryReports = new Promise(resolve => {
+    if (expected_count == 0)
+      resolve();
+
+    const observer = new global.ReportingObserver((rs) => {
+      for (const r of rs) {
+        reports.push(r.toJSON());
+      }
+      if (expected_count <= reports.length)
+        resolve();
+    });
+    observer.observe();
+
+  });
+
+  // Wait 500ms more to catch additionnal unexpected reports.
+  await receivedEveryReports;
+  await new Promise(r => step_timeout(r, 500));
+  return reports;
+}
+
+function desc(headers) {
+  return headers === '' ? '(none)' : headers;
+}
+
+// CASES is a list of test case. Each test case consists of:
+//   parent_headers: the suffix of the URL of the parent frame.
+//   target_headers: the suffix of the URL of the target frame.
+//   expected_reports: one of:
+//     'CORP':    CORP violation
+//     'CORP-RO': CORP violation (report only)
+//     'NAV':     COEP mismatch between the frames.
+//     'NAV-RO':  COEP mismatch between the frames (report only).
+const reportingTest = function(
+  parent_headers, target_headers, expected_reports) {
+  // These tests are very slow, so they must be run in parallel using
+  // async_test.
+  promise_test_parallel(async t => {
+    const targetUrl = REMOTE_FRAME_URL + target_headers;
+    const parent = await loadFrames(t, parent_headers, targetUrl);
+    const contextUrl = parent.src ? parent.src : 'about:blank';
+    const reports = await observeReports(
+        parent.contentWindow,
+        expected_reports.length
+      );
+    assert_equals(reports.length, expected_reports.length);
+    for (let i = 0; i < reports.length; i += 1) {
+      const report = reports[i];
+      switch (expected_reports[i]) {
+        case 'CORP':
+          checkCorpReport(report, contextUrl, targetUrl, 'enforce');
+          break;
+        case 'CORP-RO':
+          checkCorpReport(report, contextUrl, targetUrl, 'reporting');
+          break;
+        case 'NAV':
+          checkCoepMismatchReport(report, contextUrl, targetUrl, 'enforce');
+          break;
+        case 'NAV-RO':
+          checkCoepMismatchReport(report, contextUrl, targetUrl, 'reporting');
+          break;
+        default:
+          assert_unreached(
+            'Unexpected report exception: ' + expected_reports[i]);
+      }
+    }
+  }, `parent: ${desc(parent_headers)}, target: ${desc(target_headers)}, `);
+}
+
+reportingTest('', '', []);
+reportingTest('', COEP, []);
+reportingTest(COEP, COEP, ['CORP']);
+reportingTest(COEP, '', ['CORP']);
+
+reportingTest('', CORP_CROSS_ORIGIN, []);
+reportingTest(COEP, CORP_CROSS_ORIGIN, ['NAV']);
+
+reportingTest('', COEP + CORP_CROSS_ORIGIN, []);
+reportingTest(COEP, COEP + CORP_CROSS_ORIGIN, []);
+
+reportingTest(COEP_RO, COEP, ['CORP-RO']);
+reportingTest(COEP_RO, '', ['CORP-RO', 'NAV-RO']);
+reportingTest(COEP_RO, CORP_CROSS_ORIGIN, ['NAV-RO']);
+reportingTest(COEP_RO, COEP + CORP_CROSS_ORIGIN, []);
+
+reportingTest(COEP, COEP_RO + CORP_CROSS_ORIGIN, ['NAV']);
diff --git a/testing/web-platform/tests/html/cross-origin-embedder-policy/credentialless/reporting-subresource-corp.https.window.js b/testing/web-platform/tests/html/cross-origin-embedder-policy/credentialless/reporting-subresource-corp.https.window.js
new file mode 100644
index 0000000000..ab583fd49e
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-embedder-policy/credentialless/reporting-subresource-corp.https.window.js
@@ -0,0 +1,74 @@
+// META: timeout=long
+// META: script=/common/utils.js
+// META: script=/common/get-host-info.sub.js
+// META: script=/service-workers/service-worker/resources/test-helpers.sub.js
+const {ORIGIN, REMOTE_ORIGIN} = get_host_info();
+const BASE = "/html/cross-origin-embedder-policy/resources";
+const REPORTING_FRAME_URL = `${ORIGIN}${BASE}/reporting-empty-frame.html` +
+  '?pipe=header(cross-origin-embedder-policy,credentialless)' +
+  '&token=${token()}';
+
+async function observeReports(global, expected_count) {
+  const reports = [];
+  const receivedEveryReports = new Promise(resolve => {
+    if (expected_count == 0)
+      resolve();
+
+    const observer = new global.ReportingObserver((rs) => {
+      for (const r of rs) {
+        reports.push(r.toJSON());
+      }
+      if (expected_count <= reports.length)
+        resolve();
+    });
+    observer.observe();
+
+  });
+
+  await receivedEveryReports;
+  // Wait 1000ms more to catch additionnal unexpected reports.
+  await new Promise(r => step_timeout(r, 1000));
+  return reports;
+}
+
+async function fetchInFrame(t, frameUrl, url, expected_count) {
+  const frame = await with_iframe(frameUrl);
+  t.add_cleanup(() => frame.remove());
+
+  const init = { mode: 'no-cors', cache: 'no-store' };
+  let future_reports = observeReports(frame.contentWindow, expected_count);
+  await frame.contentWindow.fetch(url, init).catch(() => {});
+
+  return await future_reports;
+}
+
+function checkReport(report, contextUrl, blockedUrl, disposition, destination) {
+  assert_equals(report.type, 'coep');
+  assert_equals(report.url, contextUrl);
+  assert_equals(report.body.type, 'corp');
+  assert_equals(report.body.blockedURL, blockedUrl);
+  assert_equals(report.body.disposition, disposition);
+  assert_equals(report.body.destination, destination);
+}
+
+// A redirection is used, so that the initial request is same-origin and is
+// proxyied through the service worker. The ServiceWorker is COEP:unsafe-none,
+// so it will make the cross-origin request with credentials. The fetch will
+// succeed, but the response will be blocked by CORP when entering the
+// COEP:credentialless document.
+// https://github.com/w3c/ServiceWorker/issues/1592
+promise_test(async (t) => {
+  const url = `${ORIGIN}/common/redirect.py?location=` +
+       encodeURIComponent(`${REMOTE_ORIGIN}/common/text-plain.txt`);
+  const WORKER_URL = `${ORIGIN}${BASE}/sw.js`;
+  const reg = await service_worker_unregister_and_register(
+    t, WORKER_URL, REPORTING_FRAME_URL);
+  t.add_cleanup(() => reg.unregister());
+  const worker = reg.installing || reg.waiting || reg.active;
+  worker.addEventListener('error', t.unreached_func('Worker.onerror'));
+  await wait_for_state(t, worker, 'activated');
+
+  const reports = await fetchInFrame(t, REPORTING_FRAME_URL, url, 1);
+  assert_equals(reports.length, 1);
+  checkReport(reports[0], REPORTING_FRAME_URL, url, 'enforce', '');
+});
diff --git a/testing/web-platform/tests/html/cross-origin-embedder-policy/credentialless/resources/common.js b/testing/web-platform/tests/html/cross-origin-embedder-policy/credentialless/resources/common.js
new file mode 100644
index 0000000000..ce21c766f6
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-embedder-policy/credentialless/resources/common.js
@@ -0,0 +1,134 @@
+const executor_path = '/common/dispatcher/executor.html?pipe=';
+const executor_worker_path = '/common/dispatcher/executor-worker.js?pipe=';
+const executor_service_worker_path = '/common/dispatcher/executor-service-worker.js?pipe=';
+
+// COEP
+const coep_none =
+    '|header(Cross-Origin-Embedder-Policy,none)';
+const coep_credentialless =
+    '|header(Cross-Origin-Embedder-Policy,credentialless)';
+const coep_require_corp =
+    '|header(Cross-Origin-Embedder-Policy,require-corp)';
+
+// COEP-Report-Only
+const coep_report_only_credentialless =
+    '|header(Cross-Origin-Embedder-Policy-Report-Only,credentialless)';
+
+// COOP
+const coop_same_origin =
+    '|header(Cross-Origin-Opener-Policy,same-origin)';
+
+// CORP
+const corp_cross_origin =
+    '|header(Cross-Origin-Resource-Policy,cross-origin)';
+
+const cookie_same_site_none = ';SameSite=None;Secure';
+
+// Test using the modern async/await primitives are easier to read/write.
+// However they run sequentially, contrary to async_test. This is the parallel
+// version, to avoid timing out.
+let promise_test_parallel = (promise, description) => {
+  async_test(test => {
+    promise(test)
+      .then(() => test.done())
+      .catch(test.step_func(error => { throw error; }));
+  }, description);
+};
+
+// Add a cookie |cookie_key|=|cookie_value| on an |origin|.
+// Note: cookies visibility depends on the path of the document. Those are set
+// from a document from: /html/cross-origin-embedder-policy/credentialless/. So
+// the cookie is visible to every path underneath.
+const setCookie = async (origin, cookie_key, cookie_value) => {
+  const popup_token = token();
+  const popup_url = origin + executor_path + `&uuid=${popup_token}`;
+  const popup = window.open(popup_url);
+
+  const reply_token = token();
+  send(popup_token, `
+    document.cookie = "${cookie_key}=${cookie_value}";
+    send("${reply_token}", "done");
+  `);
+  assert_equals(await receive(reply_token), "done");
+  popup.close();
+}
+
+let parseCookies = function(headers_json) {
+  if (!headers_json["cookie"])
+    return {};
+
+  return headers_json["cookie"]
+    .split(';')
+    .map(v => v.split('='))
+    .reduce((acc, v) => {
+      acc[v[0].trim()] = v[1].trim();
+      return acc;
+    }, {});
+}
+
+// Open a new window with a given |origin|, loaded with COEP:credentialless. The
+// new document will execute any scripts sent toward the token it returns.
+const newCredentiallessWindow = (origin) => {
+  const main_document_token = token();
+  const url = origin + executor_path + coep_credentialless +
+    `&uuid=${main_document_token}`;
+  const context = window.open(url);
+  add_completion_callback(() => w.close());
+  return main_document_token;
+};
+
+// Create a new iframe, loaded with COEP:credentialless.
+// The new document will execute any scripts sent toward the token it returns.
+const newCredentiallessIframe = (parent_token, child_origin) => {
+  const sub_document_token = token();
+  const iframe_url = child_origin + executor_path + coep_credentialless +
+    `&uuid=${sub_document_token}`;
+  send(parent_token, `
+    let iframe = document.createElement("iframe");
+    iframe.src = "${iframe_url}";
+    document.body.appendChild(iframe);
+  `)
+  return sub_document_token;
+};
+
+// A common interface for building the 4 type of execution contexts:
+// It outputs: [
+//   - The token to communicate with the environment.
+//   - A promise resolved when the environment encounters an error.
+// ]
+const environments = {
+  document: headers => {
+    const tok = token();
+    const url = window.origin + executor_path + headers + `&uuid=${tok}`;
+    const context = window.open(url);
+    add_completion_callback(() => context.close());
+    return [tok, new Promise(resolve => {})];
+  },
+
+  dedicated_worker: headers => {
+    const tok = token();
+    const url = window.origin + executor_worker_path + headers + `&uuid=${tok}`;
+    const context = new Worker(url);
+    return [tok, new Promise(resolve => context.onerror = resolve)];
+  },
+
+  shared_worker: headers => {
+    const tok = token();
+    const url = window.origin + executor_worker_path + headers + `&uuid=${tok}`;
+    const context = new SharedWorker(url);
+    return [tok, new Promise(resolve => context.onerror = resolve)];
+  },
+
+  service_worker: headers => {
+    const tok = token();
+    const url = window.origin + executor_worker_path + headers + `&uuid=${tok}`;
+    const scope = url; // Generate a one-time scope for service worker.
+    const error = new Promise(resolve => {
+      navigator.serviceWorker.register(url, {scope: scope})
+        .then(registration => {
+          add_completion_callback(() => registration.unregister());
+        }, /* catch */ resolve);
+    });
+    return [tok, error];
+  },
+};
diff --git a/testing/web-platform/tests/html/cross-origin-embedder-policy/credentialless/resources/iframeTest.js b/testing/web-platform/tests/html/cross-origin-embedder-policy/credentialless/resources/iframeTest.js
new file mode 100644
index 0000000000..501a864d46
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-embedder-policy/credentialless/resources/iframeTest.js
@@ -0,0 +1,85 @@
+// One document embeds another in an iframe. Both are loaded from the network.
+// Depending on the response headers:
+// - Cross-Origin-Embedder-Policy (COEP)
+// - Cross-Origin-Resource-Policy (CORP)
+// The child must load or must be blocked.
+//
+// What to do for:
+// - COEP:credentialless
+// - COEP:credentialless-on-children
+// is currently an active open question. This test will be updated/completed
+// later.
+
+// There are no interoperable ways to check an iframe failed to load. So a
+// timeout is being used. See https://github.com/whatwg/html/issues/125
+// Moreover, we want to track progress, managing timeout explicitly allows to
+// get a per-test results, even in case of failure of one.
+setup({ explicit_timeout: true });
+
+const same_origin = get_host_info().HTTPS_ORIGIN;
+const cross_origin = get_host_info().HTTPS_REMOTE_ORIGIN;
+
+// Open a new window loaded with the given |headers|. The new document will
+// execute any script sent toward the token it returns.
+const newWindow = (headers) => {
+  const executor_token = token();
+  const url = same_origin + executor_path + headers + `&uuid=${executor_token}`;
+  const w = window.open(url);
+  add_completion_callback(() => w.close());
+  return executor_token;
+};
+
+const EXPECT_LOAD = "load";
+const EXPECT_BLOCK = "block";
+
+// Load in iframe. Control both the parent and the child headers. Check whether
+// it loads or not.
+const iframeTest = function(
+  description,
+  parent_token,
+  child_origin,
+  child_headers,
+  expectation
+) {
+  promise_test_parallel(async test => {
+    const test_token = token();
+
+    const child_token = token();
+    const child_url = child_origin + executor_path + child_headers +
+      `&uuid=${child_token}`;
+
+    await send(parent_token, `
+      let iframe = document.createElement("iframe");
+      iframe.src = "${child_url}";
+      document.body.appendChild(iframe);
+    `);
+
+    await send(child_token, `
+      send("${test_token}", "load");
+    `);
+
+    // There are no interoperable ways to check an iframe failed to load. So a
+    // timeout is being used.
+    // See https://github.com/whatwg/html/issues/125
+    // Use a shorter timeout when it is expected to be reached.
+    // - The long delay reduces the false-positive rate. False-positive causes
+    //   stability problems on bot, so a big delay is used to vanish them.
+    //   https://crbug.com/1215956.
+    // - The short delay avoids delaying too much the test(s) for nothing and
+    //   timing out. False-negative are not a problem, they just need not to
+    //   overwhelm the true-negative, which is trivial to get.
+    step_timeout(()=>send(test_token, "block"), expectation == EXPECT_BLOCK
+      ? 2000
+      : 6000
+    );
+
+    assert_equals(await receive(test_token), expectation);
+  }, description);
+}
+
+// A decorated version of iframeTest, adding CORP:cross-origin to the child.
+const iframeTestCORP = function() {
+  arguments[0] += ", CORP:cross-origin"; // description
+  arguments[3] += corp_cross_origin;     // child_headers
+  iframeTest(...arguments);
+}
diff --git a/testing/web-platform/tests/html/cross-origin-embedder-policy/credentialless/resources/redirect_none_to_credentialless.py b/testing/web-platform/tests/html/cross-origin-embedder-policy/credentialless/resources/redirect_none_to_credentialless.py
new file mode 100644
index 0000000000..7f0c35e93e
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-embedder-policy/credentialless/resources/redirect_none_to_credentialless.py
@@ -0,0 +1,14 @@
+COEP_HEADER = b"|header(cross-origin-embedder-policy, credentialless)"
+CORP_HEADER = b"|header(cross-origin-resource-policy, cross-origin)"
+
+def main(request, response):
+    """
+    Causes a redirection that the initial response doesn't have credentialless and the
+    redirected response has credentialless.
+    """
+    response.status = 302
+
+    location = \
+        request.GET[b'redirectTo'] + b"&pipe=" + COEP_HEADER + CORP_HEADER
+
+    response.headers.set(b"Location", location)
diff --git a/testing/web-platform/tests/html/cross-origin-embedder-policy/credentialless/script.https.window.js b/testing/web-platform/tests/html/cross-origin-embedder-policy/credentialless/script.https.window.js
new file mode 100644
index 0000000000..96bf7b08db
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-embedder-policy/credentialless/script.https.window.js
@@ -0,0 +1,99 @@
+// META: script=/common/get-host-info.sub.js
+// META: script=/common/utils.js
+// META: script=/common/dispatcher/dispatcher.js
+// META: script=./resources/common.js
+
+window.onload = function() {
+  promise_test_parallel(async test => {
+    const same_origin = get_host_info().HTTPS_ORIGIN;
+    const cross_origin = get_host_info().HTTPS_REMOTE_ORIGIN;
+    const cookie_key = "coep_credentialless_script";
+    const cookie_same_origin = "same_origin";
+    const cookie_cross_origin = "cross_origin";
+
+    await Promise.all([
+      setCookie(same_origin, cookie_key, cookie_same_origin +
+        cookie_same_site_none),
+      setCookie(cross_origin, cookie_key, cookie_cross_origin +
+        cookie_same_site_none),
+    ]);
+
+    // One window with COEP:none. (control)
+    const w_control_token = token();
+    const w_control_url = same_origin + executor_path +
+      coep_none + `&uuid=${w_control_token}`
+    const w_control = window.open(w_control_url);
+    add_completion_callback(() => w_control.close());
+
+    // One window with COEP:credentialless. (experiment)
+    const w_credentialless_token = token();
+    const w_credentialless_url = same_origin + executor_path +
+      coep_credentialless + `&uuid=${w_credentialless_token}`;
+    const w_credentialless = window.open(w_credentialless_url);
+    add_completion_callback(() => w_credentialless.close());
+
+    let scriptTest = function(
+      description, origin, mode,
+      expected_cookies_control,
+      expected_cookies_credentialless)
+    {
+      promise_test_parallel(async test => {
+        const token_1 = token();
+        const token_2 = token();
+
+        send(w_control_token, `
+          let script = document.createElement("script");
+          script.src = "${showRequestHeaders(origin, token_1)}";
+          ${mode};
+          document.body.appendChild(script);
+        `);
+        send(w_credentialless_token, `
+          let script = document.createElement("script");
+          script.src = "${showRequestHeaders(origin, token_2)}";
+          ${mode};
+          document.body.appendChild(script);
+        `);
+
+        const headers_control = JSON.parse(await receive(token_1));
+        const headers_credentialless = JSON.parse(await receive(token_2));
+
+        assert_equals(parseCookies(headers_control)[cookie_key],
+          expected_cookies_control,
+          "coep:none => ");
+        assert_equals(parseCookies(headers_credentialless)[cookie_key],
+          expected_cookies_credentialless,
+          "coep:credentialless => ");
+      }, `script ${description}`)
+    };
+
+    // Same-origin request always contains Cookies:
+    scriptTest("same-origin + undefined",
+      same_origin, '',
+      cookie_same_origin,
+      cookie_same_origin);
+    scriptTest("same-origin + anonymous",
+      same_origin, 'script.crossOrigin="anonymous"',
+      cookie_same_origin,
+      cookie_same_origin);
+    scriptTest("same-origin + use-credentials",
+      same_origin, 'script.crossOrigin="use-credentials"',
+      cookie_same_origin,
+      cookie_same_origin);
+
+    // Cross-origin request contains cookies in the following cases:
+    // - COEP:credentialless is not set.
+    // - script.crossOrigin is `use-credentials`.
+    scriptTest("cross-origin + undefined",
+      cross_origin, '',
+      cookie_cross_origin,
+      undefined);
+    scriptTest("cross-origin + anonymous",
+      cross_origin, 'script.crossOrigin="anonymous"',
+      undefined,
+      undefined);
+    scriptTest("cross-origin + use-credentials",
+      cross_origin, 'script.crossOrigin="use-credentials"',
+      cookie_cross_origin,
+      cookie_cross_origin);
+  }, "Main");
+}
diff --git a/testing/web-platform/tests/html/cross-origin-embedder-policy/credentialless/service-worker-coep-credentialless-proxy.https.window.js b/testing/web-platform/tests/html/cross-origin-embedder-policy/credentialless/service-worker-coep-credentialless-proxy.https.window.js
new file mode 100644
index 0000000000..d1a61dbb57
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-embedder-policy/credentialless/service-worker-coep-credentialless-proxy.https.window.js
@@ -0,0 +1,85 @@
+// META: script=/common/get-host-info.sub.js
+// META: script=/common/utils.js
+// META: script=/common/dispatcher/dispatcher.js
+// META: script=./resources/common.js
+// META: script=/service-workers/service-worker/resources/test-helpers.sub.js
+
+const same_origin = get_host_info().HTTPS_ORIGIN;
+const cross_origin = get_host_info().HTTPS_REMOTE_ORIGIN;
+
+promise_test(async test => {
+  const this_token_1 = token();
+  const this_token_2 = token();
+
+  // Register a COEP:credentialless ServiceWorker.
+  const sw_token = token();
+  const sw_url =
+    executor_service_worker_path + coep_credentialless + `&uuid=${sw_token}`;
+  // Executors should be controlled by the service worker.
+  const scope = executor_path;
+  const sw_registration =
+    await service_worker_unregister_and_register(test, sw_url, scope);
+  test.add_cleanup(() => sw_registration.unregister());
+  await wait_for_state(test, sw_registration.installing, 'activated');
+
+  // Configure the ServiceWorker to proxy the fetch requests. Wait for the
+  // worker to be installed and activated.
+  send(sw_token, `
+    fetchHandler = event => {
+      if (!event.request.url.includes("/proxied"))
+        return;
+
+      send("${this_token_1}", "ServiceWorker: Proxying");
+
+      // Response with a cross-origin no-cors resource.
+      const url = "${cross_origin}" + "/common/blank.html}";
+
+      event.respondWith(new Promise(async resolve => {
+        try {
+          let response = await fetch(url, {
+            mode: "no-cors",
+            credentials: "include"
+          });
+          send("${this_token_1}", "ServiceWorker: Fetch success");
+          resolve(response);
+        } catch (error) {
+          send("${this_token_1}", "ServiceWorker: Fetch failure");
+          resolve(new Response("", {status: 400}));
+        }
+      }));
+    }
+
+    await clients.claim();
+
+    send("${this_token_1}", serviceWorker.state);
+  `)
+  assert_equals(await receive(this_token_1), "activated");
+
+  // Create a COEP:credentialless document.
+  const document_token = environments["document"](coep_credentialless)[0];
+
+  // The document fetches a same-origin no-cors resource. The requests needs to
+  // be same-origin to be handled by the ServiceWorker.
+  send(document_token, `
+    try {
+      const response = await fetch("/proxied", { mode: "no-cors", });
+
+      send("${this_token_2}", "Document: Fetch success");
+    } catch (error) {
+      send("${this_token_2}", "Document: Fetch error");
+    }
+  `);
+
+  // The COEP:credentialless ServiceWorker is able to handle the cross-origin
+  // no-cors request, requested with credentials.
+  assert_equals(await receive(this_token_1), "ServiceWorker: Proxying");
+  assert_equals(await receive(this_token_1), "ServiceWorker: Fetch success");
+
+  // The COEP:credentialless Document is allowed by CORP to get it.
+  assert_equals(await receive(this_token_2), "Document: Fetch success");
+
+  // test.add_cleanup doesn't allow waiting for a promise. Unregistering a
+  // ServiceWorker is an asynchronous operation. It might not be completed on
+  // time for the next test. Do it here for extra flakiness safety.
+  await sw_registration.unregister()
+}, "COEP:credentialless ServiceWorker");
diff --git a/testing/web-platform/tests/html/cross-origin-embedder-policy/credentialless/service-worker-coep-none-proxy.https.window.js b/testing/web-platform/tests/html/cross-origin-embedder-policy/credentialless/service-worker-coep-none-proxy.https.window.js
new file mode 100644
index 0000000000..21969bb7ed
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-embedder-policy/credentialless/service-worker-coep-none-proxy.https.window.js
@@ -0,0 +1,87 @@
+// META: script=/common/get-host-info.sub.js
+// META: script=/common/utils.js
+// META: script=/common/dispatcher/dispatcher.js
+// META: script=./resources/common.js
+// META: script=/service-workers/service-worker/resources/test-helpers.sub.js
+
+const same_origin = get_host_info().HTTPS_ORIGIN;
+const cross_origin = get_host_info().HTTPS_REMOTE_ORIGIN;
+
+promise_test(async test => {
+  const this_token_1 = token();
+  const this_token_2 = token();
+
+  // Register a COEP:none ServiceWorker.
+  const sw_token = token();
+  const sw_url = executor_service_worker_path + coep_none + `&uuid=${sw_token}`;
+  // Executors should be controlled by the service worker.
+  const scope = executor_path;
+  const sw_registration =
+    await service_worker_unregister_and_register(test, sw_url, scope);
+  test.add_cleanup(() => sw_registration.unregister());
+  await wait_for_state(test, sw_registration.installing, 'activated');
+
+  // Configure the ServiceWorker to proxy the fetch requests. Wait for the
+  // worker to be installed and activated.
+  send(sw_token, `
+    fetchHandler = event => {
+      if (!event.request.url.includes("/proxied"))
+        return;
+
+      send("${this_token_1}", "ServiceWorker: Proxying");
+
+      // Response with a cross-origin no-cors resource.
+      const url = "${cross_origin}" + "/common/blank.html}";
+
+      event.respondWith(new Promise(async resolve => {
+        try {
+          let response = await fetch(url, {
+            mode: "no-cors",
+            credentials: "include"
+          });
+          send("${this_token_1}", "ServiceWorker: Fetch success");
+          resolve(response);
+        } catch (error) {
+          send("${this_token_1}", "ServiceWorker: Fetch failure");
+          resolve(new Response("", {status: 400}));
+        }
+      }));
+    }
+
+    await clients.claim();
+
+    send("${this_token_1}", serviceWorker.state);
+  `)
+  assert_equals(await receive(this_token_1), "activated");
+
+  // Create a COEP:credentialless document.
+  const document_token = environments["document"](coep_credentialless)[0];
+
+  // The document fetches a same-origin no-cors resource. The requests needs to
+  // be same-origin to be handled by the ServiceWorker.
+  send(document_token, `
+    try {
+      const response = await fetch("/proxied", {
+        mode: "no-cors",
+        credentials: "include"
+      });
+
+      send("${this_token_2}", "Document: Fetch success");
+    } catch (error) {
+      send("${this_token_2}", "Document: Fetch error");
+    }
+  `);
+
+  // The COEP:unsafe-none ServiceWorker is able to handle the cross-origin
+  // no-cors request, requested with credentials.
+  assert_equals(await receive(this_token_1), "ServiceWorker: Proxying");
+  assert_equals(await receive(this_token_1), "ServiceWorker: Fetch success");
+
+  // However, the COEP:credentialless Document is disallowed by CORP to get it.
+  assert_equals(await receive(this_token_2), "Document: Fetch error");
+
+  // test.add_cleanup doesn't allow waiting for a promise. Unregistering a
+  // ServiceWorker is an asynchronous operation. It might not be completed on
+  // time for the next test. Do it here for extra flakiness safety.
+  await sw_registration.unregister()
+}, "COEP:unsafe-none ServiceWorker");
diff --git a/testing/web-platform/tests/html/cross-origin-embedder-policy/credentialless/service-worker.https.window.js b/testing/web-platform/tests/html/cross-origin-embedder-policy/credentialless/service-worker.https.window.js
new file mode 100644
index 0000000000..4fc0061c57
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-embedder-policy/credentialless/service-worker.https.window.js
@@ -0,0 +1,113 @@
+// META: timeout=long
+// META: script=/common/get-host-info.sub.js
+// META: script=/common/utils.js
+// META: script=/common/dispatcher/dispatcher.js
+// META: script=/service-workers/service-worker/resources/test-helpers.sub.js
+// META: script=./resources/common.js
+
+const same_origin = get_host_info().HTTPS_ORIGIN;
+const cross_origin = get_host_info().HTTPS_REMOTE_ORIGIN;
+const cookie_key = "credentialless_service_worker";
+const cookie_same_origin = "same_origin";
+const cookie_cross_origin = "cross_origin";
+
+promise_test(async t => {
+  await Promise.all([
+    setCookie(same_origin, cookie_key, cookie_same_origin +
+      cookie_same_site_none),
+    setCookie(cross_origin, cookie_key, cookie_cross_origin +
+      cookie_same_site_none),
+  ]);
+
+  // One iframe with COEP:none. (control)
+  const w_control_token = token();
+  const w_control_url = same_origin + executor_path +
+    coep_none + `&uuid=${w_control_token}`
+  const w_control = document.createElement("iframe");
+  w_control.src = w_control_url;
+  document.body.appendChild(w_control);
+
+  // One iframe with COEP:credentialless. (experiment)
+  const w_credentialless_token = token();
+  const w_credentialless_url = same_origin + executor_path +
+    coep_credentialless + `&uuid=${w_credentialless_token}`;
+  const w_credentialless = document.createElement("iframe");
+  w_credentialless.src = w_credentialless_url;
+  document.body.appendChild(w_credentialless);
+
+  const serviceWorkerTest = function(
+    description, origin, coep_for_worker,
+    expected_cookies_control,
+    expected_cookies_credentialless)
+  {
+    promise_test(async test => {
+      // Create workers for both window.
+      const control_worker_token = token();
+      const credentialless_worker_token = token();
+
+      const w_control_worker_src = same_origin + executor_worker_path +
+        coep_for_worker + `&uuid=${control_worker_token}`;
+      const w_control_worker_reg =
+        await service_worker_unregister_and_register(
+          test, w_control_worker_src, w_control_url);
+
+      const w_credentialless_worker_src = same_origin + executor_worker_path +
+        coep_for_worker + `&uuid=${credentialless_worker_token}`;
+      const w_credentialless_worker_reg =
+        await service_worker_unregister_and_register(
+          test, w_credentialless_worker_src, w_credentialless_url);
+
+      // Fetch resources from the workers.
+      const control_request_token = token();
+      const credentialless_request_token = token();
+      const control_request_url = showRequestHeaders(origin, control_request_token);
+      const credentialless_request_url = showRequestHeaders(origin, credentialless_request_token);
+      send(control_worker_token, `
+        fetch("${control_request_url}", {
+          mode: 'no-cors',
+          credentials: 'include'
+        })
+      `);
+      send(credentialless_worker_token, `
+        fetch("${credentialless_request_url}", {
+          mode: 'no-cors',
+          credentials: 'include'
+        })
+      `);
+
+      // Retrieve the resource request headers.
+      const headers_control = JSON.parse(await receive(control_request_token));
+      const headers_credentialless = JSON.parse(await receive(credentialless_request_token));
+
+      assert_equals(parseCookies(headers_control)[cookie_key],
+        expected_cookies_control,
+        "coep:none => ");
+      assert_equals(parseCookies(headers_credentialless)[cookie_key],
+        expected_cookies_credentialless,
+        "coep:credentialless => ");
+
+      w_control_worker_reg.unregister();
+      w_credentialless_worker_reg.unregister();
+    }, `fetch ${description}`)
+  };
+
+  serviceWorkerTest("same-origin",
+    same_origin, coep_none,
+    cookie_same_origin,
+    cookie_same_origin);
+
+  serviceWorkerTest("same-origin + credentialless worker",
+    same_origin, coep_credentialless,
+    cookie_same_origin,
+    cookie_same_origin);
+
+  serviceWorkerTest("cross-origin",
+    cross_origin, coep_none,
+    cookie_cross_origin,
+    cookie_cross_origin);
+
+  serviceWorkerTest("cross-origin + credentialless worker",
+    cross_origin, coep_credentialless,
+    undefined,
+    undefined);
+})
diff --git a/testing/web-platform/tests/html/cross-origin-embedder-policy/credentialless/shared-worker.https.window.js b/testing/web-platform/tests/html/cross-origin-embedder-policy/credentialless/shared-worker.https.window.js
new file mode 100644
index 0000000000..0bfa72e2e5
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-embedder-policy/credentialless/shared-worker.https.window.js
@@ -0,0 +1,119 @@
+// META: timeout=long
+// META: script=/common/get-host-info.sub.js
+// META: script=/common/utils.js
+// META: script=/common/dispatcher/dispatcher.js
+// META: script=./resources/common.js
+
+const same_origin = get_host_info().HTTPS_ORIGIN;
+const cross_origin = get_host_info().HTTPS_REMOTE_ORIGIN;
+const cookie_key = "credentialless_shared_worker";
+const cookie_same_origin = "same_origin";
+const cookie_cross_origin = "cross_origin";
+
+promise_test(async test => {
+  await Promise.all([
+    setCookie(same_origin, cookie_key, cookie_same_origin +
+      cookie_same_site_none),
+    setCookie(cross_origin, cookie_key, cookie_cross_origin +
+      cookie_same_site_none),
+  ]);
+
+  // One window with COEP:none. (control)
+  const w_control_token = token();
+  const w_control_url = same_origin + executor_path +
+    coep_none + `&uuid=${w_control_token}`
+  const w_control = window.open(w_control_url);
+  add_completion_callback(() => w_control.close());
+
+  // One window with COEP:credentialless. (experiment)
+  const w_credentialless_token = token();
+  const w_credentialless_url = same_origin + executor_path +
+    coep_credentialless + `&uuid=${w_credentialless_token}`;
+  const w_credentialless = window.open(w_credentialless_url);
+  add_completion_callback(() => w_credentialless.close());
+
+  let GetCookie = (response) => {
+    const headers_credentialless = JSON.parse(response);
+    return parseCookies(headers_credentialless)[cookie_key];
+  }
+
+  const sharedWorkerTest = function(
+    description, origin, coep_for_worker,
+    expected_cookies_control,
+    expected_cookies_credentialless)
+  {
+    promise_test_parallel(async t => {
+      // Create workers for both window.
+      const worker_token_1 = token();
+      const worker_token_2 = token();
+
+      // Used to check for errors creating the DedicatedWorker.
+      const worker_error_1 = token();
+      const worker_error_2 = token();
+
+      const w_worker_src_1 = same_origin + executor_worker_path +
+        coep_for_worker + `&uuid=${worker_token_1}`;
+      send(w_control_token, `
+        let worker = new SharedWorker("${w_worker_src_1}", {});
+        worker.onerror = () => {
+          send("${worker_error_1}", "Worker blocked");
+        }
+      `);
+
+      const w_worker_src_2 = same_origin + executor_worker_path +
+        coep_for_worker + `&uuid=${worker_token_2}`;
+      send(w_credentialless_token, `
+        let worker = new SharedWorker("${w_worker_src_2}", {});
+        worker.onerror = () => {
+          send("${worker_error_2}", "Worker blocked");
+        }
+      `);
+
+      // Fetch resources with the workers.
+      const request_token_1 = token();
+      const request_token_2 = token();
+      const request_url_1 = showRequestHeaders(origin, request_token_1);
+      const request_url_2 = showRequestHeaders(origin, request_token_2);
+      send(worker_token_1,
+        `fetch("${request_url_1}", {mode: 'no-cors', credentials: 'include'})`);
+      send(worker_token_2,
+        `fetch("${request_url_2}", {mode: 'no-cors', credentials: 'include'})`);
+
+      const response_control = await Promise.race([
+        receive(worker_error_1),
+        receive(request_token_1).then(GetCookie)
+      ]);
+      assert_equals(response_control,
+        expected_cookies_control,
+        "coep:none => ");
+
+      const response_credentialless = await Promise.race([
+        receive(worker_error_2),
+        receive(request_token_2).then(GetCookie)
+      ]);
+      assert_equals(response_credentialless,
+        expected_cookies_credentialless,
+        "coep:credentialless => ");
+    }, `fetch ${description}`)
+  };
+
+  sharedWorkerTest("same-origin",
+    same_origin, coep_none,
+    cookie_same_origin,
+    cookie_same_origin);
+
+  sharedWorkerTest("same-origin + credentialless worker",
+    same_origin, coep_credentialless,
+    cookie_same_origin,
+    cookie_same_origin);
+
+  sharedWorkerTest("cross-origin",
+    cross_origin, coep_none,
+    cookie_cross_origin,
+    cookie_cross_origin);
+
+  sharedWorkerTest("cross-origin + credentialless worker",
+    cross_origin, coep_credentialless,
+    undefined,
+    undefined);
+})
diff --git a/testing/web-platform/tests/html/cross-origin-embedder-policy/credentialless/video.https.window.js b/testing/web-platform/tests/html/cross-origin-embedder-policy/credentialless/video.https.window.js
new file mode 100644
index 0000000000..0410b48564
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-embedder-policy/credentialless/video.https.window.js
@@ -0,0 +1,53 @@
+// META: script=/common/get-host-info.sub.js
+// META: script=/common/utils.js
+// META: script=/common/dispatcher/dispatcher.js
+// META: script=./resources/common.js
+
+const same_origin = get_host_info().HTTPS_ORIGIN;
+const cross_origin = get_host_info().HTTPS_REMOTE_ORIGIN;
+const cookie_key = "coep_credentialless_image";
+const cookie_same_origin = "same_origin";
+const cookie_cross_origin = "cross_origin";
+
+promise_setup(async test => {
+  await Promise.all([
+    setCookie(same_origin, cookie_key, cookie_same_origin +
+      cookie_same_site_none),
+    setCookie(cross_origin, cookie_key, cookie_cross_origin +
+      cookie_same_site_none),
+  ]);
+}, "Setup cookies");
+
+const videoTest = function(description, origin, mode, expected_cookie) {
+  promise_test(async test => {
+    const video_token = token();
+
+    let video = document.createElement("video");
+    video.src = showRequestHeaders(origin, video_token);
+    video.autoplay = true;
+    if (mode)
+      video.crossOrigin = mode;
+    document.body.appendChild(video);
+
+    const headers = JSON.parse(await receive(video_token));
+
+    assert_equals(parseCookies(headers)[cookie_key], expected_cookie);
+  }, `video ${description}`)
+};
+
+// Same-origin request always contains Cookies:
+videoTest("same-origin + undefined",
+  same_origin, undefined, cookie_same_origin);
+videoTest("same-origin + anonymous",
+  same_origin, 'anonymous', cookie_same_origin);
+videoTest("same-origin + use-credentials",
+  same_origin, 'use-credentials', cookie_same_origin);
+
+// Cross-origin request contains cookies, only when sent in CORS mode, using
+// crossOrigin = "use-credentials".
+videoTest("cross-origin + undefined",
+  cross_origin, '', undefined);
+videoTest("cross-origin + anonymous",
+  cross_origin, 'anonymous', undefined);
+videoTest("cross-origin + use-credentials",
+  cross_origin, 'use-credentials', cookie_cross_origin);
diff --git a/testing/web-platform/tests/html/cross-origin-embedder-policy/credentialless/video.https.window.js.headers b/testing/web-platform/tests/html/cross-origin-embedder-policy/credentialless/video.https.window.js.headers
new file mode 100644
index 0000000000..68fde79c91
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-embedder-policy/credentialless/video.https.window.js.headers
@@ -0,0 +1 @@
+Cross-Origin-Embedder-Policy:credentialless
diff --git a/testing/web-platform/tests/html/cross-origin-embedder-policy/credentialless/websocket.https.window.js b/testing/web-platform/tests/html/cross-origin-embedder-policy/credentialless/websocket.https.window.js
new file mode 100644
index 0000000000..7d0dd95d84
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-embedder-policy/credentialless/websocket.https.window.js
@@ -0,0 +1,77 @@
+// META: TIMEOUT=long
+// META: script=/common/get-host-info.sub.js
+// META: script=/common/utils.js
+// META: script=/common/dispatcher/dispatcher.js
+// META: script=./resources/common.js
+
+promise_test_parallel(async test => {
+  const same_origin = get_host_info().HTTPS_ORIGIN;
+  const cross_origin = get_host_info().HTTPS_REMOTE_ORIGIN;
+  const cookie_key = "coep_credentialless_websocket";
+  const cookie_same_origin = "same_origin";
+  const cookie_cross_origin = "cross_origin";
+
+  await Promise.all([
+    setCookie(same_origin, cookie_key, cookie_same_origin +
+      cookie_same_site_none),
+    setCookie(cross_origin, cookie_key, cookie_cross_origin +
+      cookie_same_site_none),
+  ]);
+
+  // One window with COEP:none. (control)
+  const w_control_token = token();
+  const w_control_url = same_origin + executor_path +
+    coep_none + `&uuid=${w_control_token}`
+  const w_control = window.open(w_control_url);
+  add_completion_callback(() => w_control.close());
+
+  // One window with COEP:credentialless. (experiment)
+  const w_credentialless_token = token();
+  const w_credentialless_url = same_origin + executor_path +
+    coep_credentialless + `&uuid=${w_credentialless_token}`;
+  const w_credentialless = window.open(w_credentialless_url);
+  add_completion_callback(() => w_credentialless.close());
+
+  let WebSocketTest = function(
+    description, origin,
+    expected_cookies_control,
+    expected_cookies_credentialless)
+  {
+    promise_test_parallel(async test => {
+      const token_1 = token();
+      const token_2 = token();
+
+      const origin_for_websocket = origin.replace("https", "wss");
+
+      send(w_control_token, `
+        var ws = new WebSocket("${showRequestHeaders(origin_for_websocket, token_1)}");
+      `);
+
+      send(w_credentialless_token, `
+        var ws = new WebSocket("${showRequestHeaders(origin_for_websocket, token_2)}");
+      `);
+
+      const headers_control = JSON.parse(await receive(token_1));
+      const headers_credentialless = JSON.parse(await receive(token_2));
+
+      assert_equals(parseCookies(headers_control)[cookie_key],
+        expected_cookies_control,
+        "coep:none => ");
+      assert_equals(parseCookies(headers_credentialless)[cookie_key],
+        expected_cookies_credentialless,
+        "coep:credentialless => ");
+    }, `WebSocket ${description}`)
+  };
+
+  // Same-origin request always contains Cookies:
+  WebSocketTest("same-origin",
+    same_origin,
+    cookie_same_origin,
+    cookie_same_origin);
+
+  // Cross-origin request also always contains Cookies:
+  WebSocketTest("cross-origin",
+    cross_origin,
+    cookie_cross_origin,
+    cookie_cross_origin);
+}, "Main");
diff --git a/testing/web-platform/tests/html/cross-origin-embedder-policy/cross-origin-isolated-permission-iframe.https.window.js b/testing/web-platform/tests/html/cross-origin-embedder-policy/cross-origin-isolated-permission-iframe.https.window.js
new file mode 100644
index 0000000000..9190303206
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-embedder-policy/cross-origin-isolated-permission-iframe.https.window.js
@@ -0,0 +1,74 @@
+// META: script=/common/get-host-info.sub.js
+// META: script=/common/utils.js
+// META: script=/common/dispatcher/dispatcher.js
+// META: script=./credentialless/resources/common.js
+// META: script=./resources/common.js
+
+const cors_coep_headers = coep_require_corp + corp_cross_origin;
+const same_origin = get_host_info().HTTPS_ORIGIN;
+const cross_origin = get_host_info().HTTPS_REMOTE_ORIGIN;
+
+const newIframe = async (
+  test,
+  parent_origin,
+  parent_headers,
+  child_origin,
+  child_headers
+) => {
+  const [future_child, future_error] =
+    await createIsolatedFrame(parent_origin, parent_headers);
+  future_error.then(test.unreached_func('cannot create isolated iframe.'));
+
+  const child = await future_child;
+  add_completion_callback(() => child.remove());
+
+  const grand_child_token = token();
+  const grand_child = child.contentDocument.createElement('iframe');
+  grand_child.src = child_origin + executor_path + child_headers +
+    `&uuid=${grand_child_token}`;
+  child.contentDocument.body.appendChild(grand_child);
+  add_completion_callback(() => grand_child.remove());
+
+  return grand_child_token;
+};
+
+const childFrameIsCrossOriginIsolated = async (
+  test,
+  child_origin,
+  parent_permission_coi
+) => {
+  let parent_headers = cors_coep_headers;
+  const child_headers = cors_coep_headers;
+  if (parent_permission_coi !== undefined) {
+    // Escape right parenthesis in WPT pipe:
+    parent_permission_coi = parent_permission_coi.replace(')', '\\)');
+    parent_headers += `|header(permissions-policy,` +
+                      `cross-origin-isolated=${parent_permission_coi})`;
+  }
+  const parent_origin = same_origin;
+  const iframe = await newIframe(
+    test,
+    parent_origin,
+    parent_headers,
+    child_origin,
+    child_headers);
+  return IsCrossOriginIsolated(iframe);
+}
+
+const generate_iframe_test = async (origin, isolation, expect_coi) => {
+  promise_test_parallel(async (test) => {
+    const isCrossOriginIsolated =
+      await childFrameIsCrossOriginIsolated(test, origin, isolation);
+    assert_equals(isCrossOriginIsolated, expect_coi)
+  }, `iframe (origin: ${origin}) cross origin isolated (${isolation}) ` +
+     `permission test`);
+}
+
+generate_iframe_test(same_origin, undefined, true);
+generate_iframe_test(same_origin, '*', true);
+generate_iframe_test(same_origin, 'self', true);
+generate_iframe_test(same_origin, '()', false);
+generate_iframe_test(cross_origin, undefined, false);
+generate_iframe_test(cross_origin, '*', false);
+generate_iframe_test(cross_origin, 'self', false);
+generate_iframe_test(cross_origin, '()', false);
\ No newline at end of file
diff --git a/testing/web-platform/tests/html/cross-origin-embedder-policy/cross-origin-isolated-permission-iframe.https.window.js.headers b/testing/web-platform/tests/html/cross-origin-embedder-policy/cross-origin-isolated-permission-iframe.https.window.js.headers
new file mode 100644
index 0000000000..3b7825def9
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-embedder-policy/cross-origin-isolated-permission-iframe.https.window.js.headers
@@ -0,0 +1,2 @@
+Cross-Origin-Embedder-Policy: require-corp
+Cross-Origin-Opener-Policy: same-origin
\ No newline at end of file
diff --git a/testing/web-platform/tests/html/cross-origin-embedder-policy/cross-origin-isolated-permission-worker.https.window.js b/testing/web-platform/tests/html/cross-origin-embedder-policy/cross-origin-isolated-permission-worker.https.window.js
new file mode 100644
index 0000000000..d9431cdb50
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-embedder-policy/cross-origin-isolated-permission-worker.https.window.js
@@ -0,0 +1,170 @@
+// META: script=/common/get-host-info.sub.js
+// META: script=/common/utils.js
+// META: script=/common/dispatcher/dispatcher.js
+// META: script=./credentialless/resources/common.js
+// META: script=./resources/common.js
+
+const cors_coep_headers = coep_require_corp + corp_cross_origin;
+const same_origin = get_host_info().HTTPS_ORIGIN;
+const cross_origin = get_host_info().HTTPS_REMOTE_ORIGIN;
+const dedicatedWorkerPostMessage = `
+  self.addEventListener('message', (e) => {
+    e.data.port.postMessage(self.crossOriginIsolated);
+  });
+`;
+
+const postMessageIsWorkerCrossOriginIsolated = async (
+  test,
+  frame,
+  worker_url
+) => {
+  const worker = new frame.contentWindow.Worker(worker_url);
+  const mc = new MessageChannel();
+  worker.postMessage({port: mc.port2}, [mc.port2]);
+  worker.onerror = test.unreached_func('cannot create dedicated worker');
+  return (await new Promise(r => mc.port1.onmessage = r)).data;
+}
+
+const isDataDedicatedWorkerCrossOriginIsolated = async (
+  test,
+  parent_headers
+) => {
+  const [future_child, future_error] =
+    await createIsolatedFrame('', parent_headers);
+  future_error.then(test.unreached_func('cannot create isolated iframe'));
+
+  const child = await future_child;
+  add_completion_callback(() => child.remove());
+
+  const worker_url =
+    `data:application/javascript;base64,${btoa(dedicatedWorkerPostMessage)}`;
+  return postMessageIsWorkerCrossOriginIsolated(test, child, worker_url);
+}
+
+const isBlobURLDedicatedWorkerCrossOriginIsolated = async(
+  test,
+  parent_headers
+) => {
+  const [future_child, future_error] =
+    await createIsolatedFrame("", parent_headers);
+  future_error.then(test.unreached_func('cannot create isolated iframe'));
+
+  const child = await future_child;
+  add_completion_callback(() => child.remove());
+
+  const blob =
+    new Blob([dedicatedWorkerPostMessage], {type: 'text/plaintext'});
+  const workerURL = URL.createObjectURL(blob);
+  return postMessageIsWorkerCrossOriginIsolated(test, child, workerURL)
+}
+
+const isHTTPSDedicatedWorkerCrossOriginIsolated = async(
+  test,
+  parent_headers
+) => {
+  const [future_child, future_error] =
+    await createIsolatedFrame("", parent_headers);
+  future_error.then(test.unreached_func('cannot create isolated iframe'));
+
+  const child = await future_child;
+  add_completion_callback(() => child.remove());
+
+  const worker_token = token();
+  const workerURL =
+    `${executor_worker_path}${cors_coep_headers}&uuid=${worker_token}`;
+  const worker = new child.contentWindow.Worker(workerURL);
+  return IsCrossOriginIsolated(worker_token);
+}
+
+const sharedWorkerIsCrossOriginIsolated = async(
+  test,
+  withCoopCoep
+) => {
+  const [worker, future_error] =
+    environments.shared_worker(withCoopCoep ? cors_coep_headers : "");
+  future_error.then(test.unreached_func('cannot create shared worker.'));
+  return IsCrossOriginIsolated(worker);
+}
+
+const serviceWorkerIsCrossOriginIsolated = async(
+  test,
+  withCoopCoep
+) => {
+  const [worker, future_error] =
+    environments.service_worker(withCoopCoep ? cors_coep_headers : "");
+  future_error.then(test.unreached_func('cannot create service worker.'));
+  return IsCrossOriginIsolated(worker);
+}
+
+const dedicatedWorkerIsCrossOriginIsolated = async (
+  test,
+  scheme,
+  parent_permission_coi
+) => {
+  let parent_headers = cors_coep_headers;
+  if (parent_permission_coi !== undefined) {
+    // Escape right parenthesis in WPT cors_coep_headers:
+    parent_permission_coi = parent_permission_coi.replace(')', '\\)');
+    parent_headers += `|header(permissions-policy,` +
+                      `cross-origin-isolated=${parent_permission_coi})`;
+  }
+  switch (scheme) {
+    case 'https':
+      return isHTTPSDedicatedWorkerCrossOriginIsolated(test, parent_headers);
+    case 'data':
+      return isDataDedicatedWorkerCrossOriginIsolated(test, parent_headers);
+    case 'blob':
+      return isBlobURLDedicatedWorkerCrossOriginIsolated(test, parent_headers);
+    default:
+      assert_unreached("wrong scheme for dedicated worker test.");
+  }
+}
+
+const generate_shared_worker_test = async (withCoopCoep, expected) => {
+  promise_test_parallel(async (test) => {
+  const isCrossOriginIsolated =
+    await sharedWorkerIsCrossOriginIsolated(test, withCoopCoep);
+  assert_equals(isCrossOriginIsolated, expected)
+  }, `shared_worker (withCoopCoep: ${withCoopCoep}) ` +
+     `cross origin isolated permission test`);
+}
+
+const generate_dedicated_worker_test = async (
+  scheme,
+  parent_permission_coi,
+  expected
+) => {
+  promise_test_parallel(async (test) => {
+  const isCrossOriginIsolated =
+    await dedicatedWorkerIsCrossOriginIsolated(test, scheme, parent_permission_coi);
+  assert_equals(isCrossOriginIsolated, expected)
+  }, `dedicated_worker (scheme: ${scheme}) cross origin ` +
+     `isolated (${parent_permission_coi}) permission test`);
+}
+
+const generate_service_worker_test = async (withCoopCoep, expected) => {
+  promise_test_parallel(async (test) => {
+  const isCrossOriginIsolated =
+    await serviceWorkerIsCrossOriginIsolated(test, withCoopCoep);
+  assert_equals(isCrossOriginIsolated, expected)
+  }, `service_worker (withCoopCoep: ${withCoopCoep}) ` +
+     `cross origin isolated permission test`);
+}
+
+generate_shared_worker_test(false, false);
+generate_shared_worker_test(true, true);
+
+generate_dedicated_worker_test('https', undefined, true);
+generate_dedicated_worker_test('https', '*', true);
+generate_dedicated_worker_test('https', 'self', true);
+generate_dedicated_worker_test('https', '()', false);
+generate_dedicated_worker_test('data', undefined, false);
+generate_dedicated_worker_test('data', '*', false);
+generate_dedicated_worker_test('data', 'self', false);
+generate_dedicated_worker_test('blob', undefined, true);
+generate_dedicated_worker_test('blob', '*', true);
+generate_dedicated_worker_test('blob', 'self', true);
+generate_dedicated_worker_test('blob', '()', false);
+
+generate_service_worker_test(false, false);
+generate_service_worker_test(true, true);
\ No newline at end of file
diff --git a/testing/web-platform/tests/html/cross-origin-embedder-policy/cross-origin-isolated-permission-worker.https.window.js.headers b/testing/web-platform/tests/html/cross-origin-embedder-policy/cross-origin-isolated-permission-worker.https.window.js.headers
new file mode 100644
index 0000000000..3b7825def9
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-embedder-policy/cross-origin-isolated-permission-worker.https.window.js.headers
@@ -0,0 +1,2 @@
+Cross-Origin-Embedder-Policy: require-corp
+Cross-Origin-Opener-Policy: same-origin
\ No newline at end of file
diff --git a/testing/web-platform/tests/html/cross-origin-embedder-policy/data.https.html b/testing/web-platform/tests/html/cross-origin-embedder-policy/data.https.html
new file mode 100644
index 0000000000..f2878dfc54
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-embedder-policy/data.https.html
@@ -0,0 +1,20 @@
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
diff --git a/testing/web-platform/tests/html/cross-origin-embedder-policy/data.https.html.headers b/testing/web-platform/tests/html/cross-origin-embedder-policy/data.https.html.headers
new file mode 100644
index 0000000000..6604450991
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-embedder-policy/data.https.html.headers
@@ -0,0 +1 @@
+Cross-Origin-Embedder-Policy: require-corp
diff --git a/testing/web-platform/tests/html/cross-origin-embedder-policy/dedicated-worker-cache-storage.https.html b/testing/web-platform/tests/html/cross-origin-embedder-policy/dedicated-worker-cache-storage.https.html
new file mode 100644
index 0000000000..2c97e6f875
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-embedder-policy/dedicated-worker-cache-storage.https.html
@@ -0,0 +1,128 @@
+
+
+ Check enforcement of COEP in a DedicatedWorker using CacheStorage. 
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/cross-origin-embedder-policy/dedicated-worker.https.html b/testing/web-platform/tests/html/cross-origin-embedder-policy/dedicated-worker.https.html
new file mode 100644
index 0000000000..1ba624181c
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-embedder-policy/dedicated-worker.https.html
@@ -0,0 +1,214 @@
+
+COEP and dedicated worker
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/cross-origin-embedder-policy/header-parsing.https.html b/testing/web-platform/tests/html/cross-origin-embedder-policy/header-parsing.https.html
new file mode 100644
index 0000000000..7a25eed51f
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-embedder-policy/header-parsing.https.html
@@ -0,0 +1,85 @@
+
+
+  
+  
+  
+  
+
+
+
+
diff --git a/testing/web-platform/tests/html/cross-origin-embedder-policy/iframe-history-none-require-corp.https.html b/testing/web-platform/tests/html/cross-origin-embedder-policy/iframe-history-none-require-corp.https.html
new file mode 100644
index 0000000000..0e7ef8108b
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-embedder-policy/iframe-history-none-require-corp.https.html
@@ -0,0 +1,54 @@
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/cross-origin-embedder-policy/javascript.https.html b/testing/web-platform/tests/html/cross-origin-embedder-policy/javascript.https.html
new file mode 100644
index 0000000000..60edf00312
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-embedder-policy/javascript.https.html
@@ -0,0 +1,21 @@
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
diff --git a/testing/web-platform/tests/html/cross-origin-embedder-policy/javascript.https.html.headers b/testing/web-platform/tests/html/cross-origin-embedder-policy/javascript.https.html.headers
new file mode 100644
index 0000000000..6604450991
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-embedder-policy/javascript.https.html.headers
@@ -0,0 +1 @@
+Cross-Origin-Embedder-Policy: require-corp
diff --git a/testing/web-platform/tests/html/cross-origin-embedder-policy/meta-http-equiv.https.html b/testing/web-platform/tests/html/cross-origin-embedder-policy/meta-http-equiv.https.html
new file mode 100644
index 0000000000..d35df3135a
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-embedder-policy/meta-http-equiv.https.html
@@ -0,0 +1,20 @@
+
+
+Cross-Origin-Embedder-Policy in <meta http-equiv>
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
diff --git a/testing/web-platform/tests/html/cross-origin-embedder-policy/multi-globals/current/current.html b/testing/web-platform/tests/html/cross-origin-embedder-policy/multi-globals/current/current.html
new file mode 100644
index 0000000000..e6261f8388
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-embedder-policy/multi-globals/current/current.html
@@ -0,0 +1,3 @@
+
+
+Current page
diff --git a/testing/web-platform/tests/html/cross-origin-embedder-policy/multi-globals/current/current.html.headers b/testing/web-platform/tests/html/cross-origin-embedder-policy/multi-globals/current/current.html.headers
new file mode 100644
index 0000000000..6604450991
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-embedder-policy/multi-globals/current/current.html.headers
@@ -0,0 +1 @@
+Cross-Origin-Embedder-Policy: require-corp
diff --git a/testing/web-platform/tests/html/cross-origin-embedder-policy/multi-globals/current/worker.js b/testing/web-platform/tests/html/cross-origin-embedder-policy/multi-globals/current/worker.js
new file mode 100644
index 0000000000..44103842a4
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-embedder-policy/multi-globals/current/worker.js
@@ -0,0 +1 @@
+postMessage('current');
diff --git a/testing/web-platform/tests/html/cross-origin-embedder-policy/multi-globals/incumbent/incumbent.html b/testing/web-platform/tests/html/cross-origin-embedder-policy/multi-globals/incumbent/incumbent.html
new file mode 100644
index 0000000000..d8bd1ae2c0
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-embedder-policy/multi-globals/incumbent/incumbent.html
@@ -0,0 +1,14 @@
+
+
+Incumbent page
+
+
+
+
diff --git a/testing/web-platform/tests/html/cross-origin-embedder-policy/multi-globals/incumbent/incumbent.html.headers b/testing/web-platform/tests/html/cross-origin-embedder-policy/multi-globals/incumbent/incumbent.html.headers
new file mode 100644
index 0000000000..6604450991
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-embedder-policy/multi-globals/incumbent/incumbent.html.headers
@@ -0,0 +1 @@
+Cross-Origin-Embedder-Policy: require-corp
diff --git a/testing/web-platform/tests/html/cross-origin-embedder-policy/multi-globals/incumbent/worker.js b/testing/web-platform/tests/html/cross-origin-embedder-policy/multi-globals/incumbent/worker.js
new file mode 100644
index 0000000000..03f02a8690
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-embedder-policy/multi-globals/incumbent/worker.js
@@ -0,0 +1 @@
+postMessage('incumbent');
diff --git a/testing/web-platform/tests/html/cross-origin-embedder-policy/multi-globals/worker.js b/testing/web-platform/tests/html/cross-origin-embedder-policy/multi-globals/worker.js
new file mode 100644
index 0000000000..fcc521e313
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-embedder-policy/multi-globals/worker.js
@@ -0,0 +1 @@
+postMessage('entry');
diff --git a/testing/web-platform/tests/html/cross-origin-embedder-policy/multi-globals/workers-coep-report.https.html b/testing/web-platform/tests/html/cross-origin-embedder-policy/multi-globals/workers-coep-report.https.html
new file mode 100644
index 0000000000..e1f16a61e1
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-embedder-policy/multi-globals/workers-coep-report.https.html
@@ -0,0 +1,49 @@
+
+
+Multiple globals for Worker constructor: COEP reports
+
+
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/cross-origin-embedder-policy/multi-globals/workers-coep-report.https.html.headers b/testing/web-platform/tests/html/cross-origin-embedder-policy/multi-globals/workers-coep-report.https.html.headers
new file mode 100644
index 0000000000..6604450991
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-embedder-policy/multi-globals/workers-coep-report.https.html.headers
@@ -0,0 +1 @@
+Cross-Origin-Embedder-Policy: require-corp
diff --git a/testing/web-platform/tests/html/cross-origin-embedder-policy/no-secure-context.html b/testing/web-platform/tests/html/cross-origin-embedder-policy/no-secure-context.html
new file mode 100644
index 0000000000..6e1573cd64
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-embedder-policy/no-secure-context.html
@@ -0,0 +1,19 @@
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
diff --git a/testing/web-platform/tests/html/cross-origin-embedder-policy/no-secure-context.html.headers b/testing/web-platform/tests/html/cross-origin-embedder-policy/no-secure-context.html.headers
new file mode 100644
index 0000000000..6604450991
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-embedder-policy/no-secure-context.html.headers
@@ -0,0 +1 @@
+Cross-Origin-Embedder-Policy: require-corp
diff --git a/testing/web-platform/tests/html/cross-origin-embedder-policy/non-initial-about-blank.https.html b/testing/web-platform/tests/html/cross-origin-embedder-policy/non-initial-about-blank.https.html
new file mode 100644
index 0000000000..7fed1fe581
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-embedder-policy/non-initial-about-blank.https.html
@@ -0,0 +1,21 @@
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
diff --git a/testing/web-platform/tests/html/cross-origin-embedder-policy/non-initial-about-blank.https.html.headers b/testing/web-platform/tests/html/cross-origin-embedder-policy/non-initial-about-blank.https.html.headers
new file mode 100644
index 0000000000..6604450991
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-embedder-policy/non-initial-about-blank.https.html.headers
@@ -0,0 +1 @@
+Cross-Origin-Embedder-Policy: require-corp
diff --git a/testing/web-platform/tests/html/cross-origin-embedder-policy/none-load-from-cache-storage.https.html b/testing/web-platform/tests/html/cross-origin-embedder-policy/none-load-from-cache-storage.https.html
new file mode 100644
index 0000000000..177ae8d11b
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-embedder-policy/none-load-from-cache-storage.https.html
@@ -0,0 +1,173 @@
+
+
+ Retrieve resources from CacheStorage with Cross-Origin-Embedder-Policy: require-corp
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/cross-origin-embedder-policy/none-sw-from-none.https.html b/testing/web-platform/tests/html/cross-origin-embedder-policy/none-sw-from-none.https.html
new file mode 100644
index 0000000000..6d2cf0f64f
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-embedder-policy/none-sw-from-none.https.html
@@ -0,0 +1,89 @@
+
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/cross-origin-embedder-policy/none-sw-from-require-corp.https.html b/testing/web-platform/tests/html/cross-origin-embedder-policy/none-sw-from-require-corp.https.html
new file mode 100644
index 0000000000..dc1209c40d
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-embedder-policy/none-sw-from-require-corp.https.html
@@ -0,0 +1,93 @@
+
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/cross-origin-embedder-policy/none-sw-from-require-corp.https.html.headers b/testing/web-platform/tests/html/cross-origin-embedder-policy/none-sw-from-require-corp.https.html.headers
new file mode 100644
index 0000000000..8df98474b5
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-embedder-policy/none-sw-from-require-corp.https.html.headers
@@ -0,0 +1 @@
+cross-origin-embedder-policy: require-corp
diff --git a/testing/web-platform/tests/html/cross-origin-embedder-policy/none.https.html b/testing/web-platform/tests/html/cross-origin-embedder-policy/none.https.html
new file mode 100644
index 0000000000..cf9b34b4ca
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-embedder-policy/none.https.html
@@ -0,0 +1,91 @@
+
+Cross-Origin-Embedder-Policy header and nested navigable resource without such header
+
+
+ 
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
diff --git a/testing/web-platform/tests/html/cross-origin-embedder-policy/none.https.html.headers b/testing/web-platform/tests/html/cross-origin-embedder-policy/none.https.html.headers
new file mode 100644
index 0000000000..43c44cffd6
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-embedder-policy/none.https.html.headers
@@ -0,0 +1 @@
+Cross-Origin-Embedder-Policy: unknown-should-be-parsed-as-null
diff --git a/testing/web-platform/tests/html/cross-origin-embedder-policy/reflection-credentialless.tentative.https.any.js b/testing/web-platform/tests/html/cross-origin-embedder-policy/reflection-credentialless.tentative.https.any.js
new file mode 100644
index 0000000000..f4d59955af
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-embedder-policy/reflection-credentialless.tentative.https.any.js
@@ -0,0 +1,2 @@
+// META: global=window,worker,sharedworker-module,serviceworker-module
+test(t => assert_equals(crossOriginEmbedderPolicy, "credentialless"));
diff --git a/testing/web-platform/tests/html/cross-origin-embedder-policy/reflection-credentialless.tentative.https.any.js.headers b/testing/web-platform/tests/html/cross-origin-embedder-policy/reflection-credentialless.tentative.https.any.js.headers
new file mode 100644
index 0000000000..32523a6978
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-embedder-policy/reflection-credentialless.tentative.https.any.js.headers
@@ -0,0 +1 @@
+Cross-Origin-Embedder-Policy: credentialless
diff --git a/testing/web-platform/tests/html/cross-origin-embedder-policy/reflection-require-corp.tentative.https.any.js b/testing/web-platform/tests/html/cross-origin-embedder-policy/reflection-require-corp.tentative.https.any.js
new file mode 100644
index 0000000000..f6019c2457
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-embedder-policy/reflection-require-corp.tentative.https.any.js
@@ -0,0 +1,2 @@
+// META: global=window,worker,sharedworker-module,serviceworker-module
+test(t => assert_equals(crossOriginEmbedderPolicy, "require-corp"));
diff --git a/testing/web-platform/tests/html/cross-origin-embedder-policy/reflection-require-corp.tentative.https.any.js.headers b/testing/web-platform/tests/html/cross-origin-embedder-policy/reflection-require-corp.tentative.https.any.js.headers
new file mode 100644
index 0000000000..6604450991
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-embedder-policy/reflection-require-corp.tentative.https.any.js.headers
@@ -0,0 +1 @@
+Cross-Origin-Embedder-Policy: require-corp
diff --git a/testing/web-platform/tests/html/cross-origin-embedder-policy/reflection-unsafe-none.tentative.https.any.js b/testing/web-platform/tests/html/cross-origin-embedder-policy/reflection-unsafe-none.tentative.https.any.js
new file mode 100644
index 0000000000..d2890901eb
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-embedder-policy/reflection-unsafe-none.tentative.https.any.js
@@ -0,0 +1,2 @@
+// META: global=window,worker,sharedworker-module,serviceworker-module
+test(t => assert_equals(crossOriginEmbedderPolicy, "unsafe-none"));
diff --git a/testing/web-platform/tests/html/cross-origin-embedder-policy/report-only-require-corp.https.html b/testing/web-platform/tests/html/cross-origin-embedder-policy/report-only-require-corp.https.html
new file mode 100644
index 0000000000..ff9e5b64a0
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-embedder-policy/report-only-require-corp.https.html
@@ -0,0 +1,86 @@
+
+
+Cross-Origin-Embedder-Policy-Report-Only header does not affect the actual behavior
+
+
+ 
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
diff --git a/testing/web-platform/tests/html/cross-origin-embedder-policy/report-only-require-corp.https.html.headers b/testing/web-platform/tests/html/cross-origin-embedder-policy/report-only-require-corp.https.html.headers
new file mode 100644
index 0000000000..289659a41f
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-embedder-policy/report-only-require-corp.https.html.headers
@@ -0,0 +1 @@
+cross-origin-embedder-policy-report-only: require-corp
diff --git a/testing/web-platform/tests/html/cross-origin-embedder-policy/reporting-navigation.https.html b/testing/web-platform/tests/html/cross-origin-embedder-policy/reporting-navigation.https.html
new file mode 100644
index 0000000000..dea8947818
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-embedder-policy/reporting-navigation.https.html
@@ -0,0 +1,170 @@
+
+
+
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/cross-origin-embedder-policy/reporting-subresource-corp.https.html b/testing/web-platform/tests/html/cross-origin-embedder-policy/reporting-subresource-corp.https.html
new file mode 100644
index 0000000000..e56124a4a0
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-embedder-policy/reporting-subresource-corp.https.html
@@ -0,0 +1,206 @@
+
+
+
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/cross-origin-embedder-policy/reporting-to-document-reporting-endpoint.https.window.js b/testing/web-platform/tests/html/cross-origin-embedder-policy/reporting-to-document-reporting-endpoint.https.window.js
new file mode 100644
index 0000000000..09800db2b8
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-embedder-policy/reporting-to-document-reporting-endpoint.https.window.js
@@ -0,0 +1,140 @@
+// META: script=/common/get-host-info.sub.js
+// META: script=/common/utils.js
+
+// This file consists of tests for COEP reporting using Reporting-Endpoints
+// header. It exclusively tests that reports can be sent to Reporting-Endpoint
+// configured endpoint.
+const { REMOTE_ORIGIN } = get_host_info();
+
+const REPORT_ENDPOINT = token();
+const REPORT_ONLY_ENDPOINT = token();
+const FRAME_URL = `resources/reporting-empty-frame.html` +
+  `?pipe=header(cross-origin-embedder-policy,require-corp;report-to="endpoint")` +
+  `|header(cross-origin-embedder-policy-report-only,require-corp;report-to="report-only-endpoint")` +
+  `|header(reporting-endpoints, endpoint="/html/cross-origin-embedder-policy/resources/report.py?key=${REPORT_ENDPOINT}"\\, report-only-endpoint="/html/cross-origin-embedder-policy/resources/report.py?key=${REPORT_ONLY_ENDPOINT}")`;
+
+function wait(ms) {
+  return new Promise(resolve => step_timeout(resolve, ms));
+}
+
+async function fetchReports(endpoint) {
+  const res = await fetch(`resources/report.py?key=${endpoint}`, {
+    cache: 'no-store'
+  });
+  if (res.status == 200) {
+    return await res.json();
+  }
+  return [];
+}
+
+async function fetchCoepReport(
+  endpoint, type, blockedUrl, contextUrl, disposition) {
+  blockedUrl = new URL(blockedUrl, location).href;
+  contextUrl = new URL(contextUrl, location).href;
+  const reports = await fetchReports(endpoint);
+  return reports.find(r => (
+    r.type == 'coep' &&
+    r.url == contextUrl &&
+    r.body.type == type &&
+    r.body.blockedURL === blockedUrl &&
+    r.body.disposition === disposition));
+}
+
+async function checkCorpReportExists(
+  endpoint, blockedUrl, contextUrl, destination, disposition) {
+  blockedUrl = new URL(blockedUrl, location).href;
+  contextUrl = new URL(contextUrl, location).href;
+  contextUrl.replace(REPORT_ENDPOINT, "REPORT_ENDPOINT_UUID");
+  contextUrl.replace(REPORT_ONLY_ENDPOINT, "REPORT_ONLY_ENDPOINT_UUID");
+  const report = await fetchCoepReport(
+    endpoint, 'corp', blockedUrl, contextUrl, disposition);
+  assert_true(!!report,
+    `A corp report with blockedURL ${blockedUrl.split("?")[0]} ` +
+    `and url ${contextUrl} is not found.`);
+  assert_equals(report.body.destination, destination);
+}
+
+async function checkNavigationReportExists(
+  endpoint, blockedUrl, contextUrl, disposition) {
+  blockedUrl = new URL(blockedUrl, location).href;
+  contextUrl = new URL(contextUrl, location).href;
+  contextUrl.replace(REPORT_ENDPOINT, "REPORT_ENDPOINT_UUID");
+  contextUrl.replace(REPORT_ONLY_ENDPOINT, "REPORT_ONLY_ENDPOINT_UUID");
+  const report = await fetchCoepReport(
+    endpoint, 'navigation', blockedUrl, contextUrl, disposition);
+  assert_true(!!report,
+    `A navigation report with blockedURL ${blockedUrl.split("?")[0]} ` +
+    `and url ${contextUrl} is not found.`);
+}
+
+promise_test(async t => {
+  const iframe = document.createElement('iframe');
+  t.add_cleanup(() => iframe.remove());
+
+  iframe.src = FRAME_URL;
+  await new Promise(resolve => {
+    iframe.addEventListener('load', resolve, { once: true });
+    document.body.appendChild(iframe);
+  });
+
+  const url = `${REMOTE_ORIGIN}/common/text-plain.txt?${token()}`;
+  const init = { mode: 'no-cors', cache: 'no-store' };
+  // The response comes from cross-origin, and doesn't have a CORP
+  // header, so it is blocked.
+  iframe.contentWindow.fetch(url, init).catch(() => { });
+
+  // Wait for reports to be uploaded.
+  await wait(1000);
+  await checkCorpReportExists(
+    REPORT_ENDPOINT, url, iframe.src, '', 'enforce');
+  await checkCorpReportExists(
+    REPORT_ONLY_ENDPOINT, url, iframe.src, '', 'reporting');
+}, 'subresource CORP');
+
+promise_test(async t => {
+  const iframe = document.createElement('iframe');
+  t.add_cleanup(() => iframe.remove());
+
+  iframe.src = FRAME_URL;
+  await new Promise(resolve => {
+    iframe.addEventListener('load', resolve, { once: true });
+    document.body.appendChild(iframe);
+  });
+
+  const url = `${REMOTE_ORIGIN}/common/blank.html?${token()}`;
+  // The nested frame comes from cross-origin and doesn't have a CORP
+  // header, so it is blocked.
+  const nested = iframe.contentWindow.document.createElement('iframe');
+  nested.src = url;
+  iframe.contentWindow.document.body.appendChild(nested);
+
+  // Wait for reports to be uploaded.
+  await wait(1000);
+  await checkCorpReportExists(
+    REPORT_ENDPOINT, url, iframe.src, 'iframe', 'enforce');
+  await checkCorpReportExists(
+    REPORT_ONLY_ENDPOINT, url, iframe.src, 'iframe', 'reporting');
+}, 'navigation CORP on cross origin');
+
+promise_test(async (t) => {
+  const iframe = document.createElement('iframe');
+  t.add_cleanup(() => iframe.remove());
+
+  iframe.src = FRAME_URL;
+  const targetUrl = `/common/blank.html?${token()}`;
+  iframe.addEventListener('load', t.step_func(() => {
+    const nested = iframe.contentDocument.createElement('iframe');
+    nested.src = targetUrl;
+    // |nested| doesn't have COEP whereas |iframe| has, so it is blocked.
+    iframe.contentDocument.body.appendChild(nested);
+  }), { once: true });
+
+  document.body.appendChild(iframe);
+
+  // Wait for reports to be uploaded.
+  await wait(1000);
+  await checkNavigationReportExists(
+    REPORT_ENDPOINT, targetUrl, iframe.src, 'enforce');
+  await checkNavigationReportExists(
+    REPORT_ONLY_ENDPOINT, targetUrl, iframe.src, 'reporting');
+}, 'navigation CORP on same origin');
diff --git a/testing/web-platform/tests/html/cross-origin-embedder-policy/reporting-to-endpoint.https.html b/testing/web-platform/tests/html/cross-origin-embedder-policy/reporting-to-endpoint.https.html
new file mode 100644
index 0000000000..39c3de7076
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-embedder-policy/reporting-to-endpoint.https.html
@@ -0,0 +1,209 @@
+
+
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/cross-origin-embedder-policy/reporting-to-endpoint.https.html.sub.headers b/testing/web-platform/tests/html/cross-origin-embedder-policy/reporting-to-endpoint.https.html.sub.headers
new file mode 100644
index 0000000000..fe2f651dae
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-embedder-policy/reporting-to-endpoint.https.html.sub.headers
@@ -0,0 +1 @@
+Reporting-Endpoints: endpoint="https://{{host}}:{{ports[https][0]}}//html/cross-origin-embedder-policy/resources/report.py?key=4d8b6d86-c9a8-47c1-871b-111169a8f79c", report-only-endpoint="/html/cross-origin-embedder-policy/resources/report.py?key=5d7c1e33-ef88-43c2-9ca3-c67ff300b8c2"
diff --git a/testing/web-platform/tests/html/cross-origin-embedder-policy/reporting-to-frame-owner.https.html b/testing/web-platform/tests/html/cross-origin-embedder-policy/reporting-to-frame-owner.https.html
new file mode 100644
index 0000000000..331ad898eb
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-embedder-policy/reporting-to-frame-owner.https.html
@@ -0,0 +1,87 @@
+
+
+
+Check COEP reports are sent to iframe for 'new Worker()' failure
+
+
+
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/cross-origin-embedder-policy/reporting-to-worker-owner.https.html b/testing/web-platform/tests/html/cross-origin-embedder-policy/reporting-to-worker-owner.https.html
new file mode 100644
index 0000000000..c0010876fa
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-embedder-policy/reporting-to-worker-owner.https.html
@@ -0,0 +1,89 @@
+
+
+
+Check COEP reports are sent to parent worker for 'new Worker()' failure
+
+
+
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/cross-origin-embedder-policy/require-corp-about-blank.https.html b/testing/web-platform/tests/html/cross-origin-embedder-policy/require-corp-about-blank.https.html
new file mode 100644
index 0000000000..945333b83d
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-embedder-policy/require-corp-about-blank.https.html
@@ -0,0 +1,48 @@
+
+
+
+
diff --git a/testing/web-platform/tests/html/cross-origin-embedder-policy/require-corp-about-blank.https.html.headers b/testing/web-platform/tests/html/cross-origin-embedder-policy/require-corp-about-blank.https.html.headers
new file mode 100644
index 0000000000..8df98474b5
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-embedder-policy/require-corp-about-blank.https.html.headers
@@ -0,0 +1 @@
+cross-origin-embedder-policy: require-corp
diff --git a/testing/web-platform/tests/html/cross-origin-embedder-policy/require-corp-about-srcdoc.https.html b/testing/web-platform/tests/html/cross-origin-embedder-policy/require-corp-about-srcdoc.https.html
new file mode 100644
index 0000000000..5d06286d91
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-embedder-policy/require-corp-about-srcdoc.https.html
@@ -0,0 +1,48 @@
+
+
+
diff --git a/testing/web-platform/tests/html/cross-origin-embedder-policy/require-corp-about-srcdoc.https.html.headers b/testing/web-platform/tests/html/cross-origin-embedder-policy/require-corp-about-srcdoc.https.html.headers
new file mode 100644
index 0000000000..8df98474b5
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-embedder-policy/require-corp-about-srcdoc.https.html.headers
@@ -0,0 +1 @@
+cross-origin-embedder-policy: require-corp
diff --git a/testing/web-platform/tests/html/cross-origin-embedder-policy/require-corp-cached-images.https.html b/testing/web-platform/tests/html/cross-origin-embedder-policy/require-corp-cached-images.https.html
new file mode 100644
index 0000000000..269698bc1a
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-embedder-policy/require-corp-cached-images.https.html
@@ -0,0 +1,74 @@
+
+
+ Images on a page Cross-Origin-Embedder-Policy: require-corp should load the same from the cache or network
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/cross-origin-embedder-policy/require-corp-cached-images.https.html.headers b/testing/web-platform/tests/html/cross-origin-embedder-policy/require-corp-cached-images.https.html.headers
new file mode 100644
index 0000000000..6604450991
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-embedder-policy/require-corp-cached-images.https.html.headers
@@ -0,0 +1 @@
+Cross-Origin-Embedder-Policy: require-corp
diff --git a/testing/web-platform/tests/html/cross-origin-embedder-policy/require-corp-load-from-cache-storage.https.html b/testing/web-platform/tests/html/cross-origin-embedder-policy/require-corp-load-from-cache-storage.https.html
new file mode 100644
index 0000000000..489230a776
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-embedder-policy/require-corp-load-from-cache-storage.https.html
@@ -0,0 +1,179 @@
+
+
+ Retrieve resources from CacheStorage with Cross-Origin-Embedder-Policy: require-corp
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/cross-origin-embedder-policy/require-corp-load-from-cache-storage.https.html.headers b/testing/web-platform/tests/html/cross-origin-embedder-policy/require-corp-load-from-cache-storage.https.html.headers
new file mode 100644
index 0000000000..8df98474b5
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-embedder-policy/require-corp-load-from-cache-storage.https.html.headers
@@ -0,0 +1 @@
+cross-origin-embedder-policy: require-corp
diff --git a/testing/web-platform/tests/html/cross-origin-embedder-policy/require-corp-revalidated-images.https.html b/testing/web-platform/tests/html/cross-origin-embedder-policy/require-corp-revalidated-images.https.html
new file mode 100644
index 0000000000..420190aad3
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-embedder-policy/require-corp-revalidated-images.https.html
@@ -0,0 +1,76 @@
+
+
+ Images on a page Cross-Origin-Embedder-Policy: require-corp should load the same from the cache or network, even with revalidation
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/cross-origin-embedder-policy/require-corp-sw-from-none.https.html b/testing/web-platform/tests/html/cross-origin-embedder-policy/require-corp-sw-from-none.https.html
new file mode 100644
index 0000000000..451761e818
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-embedder-policy/require-corp-sw-from-none.https.html
@@ -0,0 +1,92 @@
+
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/cross-origin-embedder-policy/require-corp-sw-from-require-corp.https.html b/testing/web-platform/tests/html/cross-origin-embedder-policy/require-corp-sw-from-require-corp.https.html
new file mode 100644
index 0000000000..c270e3a0d6
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-embedder-policy/require-corp-sw-from-require-corp.https.html
@@ -0,0 +1,93 @@
+
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/cross-origin-embedder-policy/require-corp-sw-from-require-corp.https.html.headers b/testing/web-platform/tests/html/cross-origin-embedder-policy/require-corp-sw-from-require-corp.https.html.headers
new file mode 100644
index 0000000000..8df98474b5
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-embedder-policy/require-corp-sw-from-require-corp.https.html.headers
@@ -0,0 +1 @@
+cross-origin-embedder-policy: require-corp
diff --git a/testing/web-platform/tests/html/cross-origin-embedder-policy/require-corp-sw.https.html b/testing/web-platform/tests/html/cross-origin-embedder-policy/require-corp-sw.https.html
new file mode 100644
index 0000000000..05272d41a4
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-embedder-policy/require-corp-sw.https.html
@@ -0,0 +1,53 @@
+
+Cross Origin Embedder Policy: requests initiated from a service worker with 'require-corp'
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/cross-origin-embedder-policy/require-corp-worker-script-revalidation.html b/testing/web-platform/tests/html/cross-origin-embedder-policy/require-corp-worker-script-revalidation.html
new file mode 100644
index 0000000000..74794967fb
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-embedder-policy/require-corp-worker-script-revalidation.html
@@ -0,0 +1,25 @@
+
+COEP and dedicated worker
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/cross-origin-embedder-policy/require-corp.https.html b/testing/web-platform/tests/html/cross-origin-embedder-policy/require-corp.https.html
new file mode 100644
index 0000000000..ad64a485c0
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-embedder-policy/require-corp.https.html
@@ -0,0 +1,251 @@
+
+
+Cross-Origin-Embedder-Policy header and nested navigable resource without such header
+
+
+
+ 
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
diff --git a/testing/web-platform/tests/html/cross-origin-embedder-policy/require-corp.https.html.headers b/testing/web-platform/tests/html/cross-origin-embedder-policy/require-corp.https.html.headers
new file mode 100644
index 0000000000..6604450991
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-embedder-policy/require-corp.https.html.headers
@@ -0,0 +1 @@
+Cross-Origin-Embedder-Policy: require-corp
diff --git a/testing/web-platform/tests/html/cross-origin-embedder-policy/resources/blob-url-factory.html b/testing/web-platform/tests/html/cross-origin-embedder-policy/resources/blob-url-factory.html
new file mode 100644
index 0000000000..928d404672
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-embedder-policy/resources/blob-url-factory.html
@@ -0,0 +1,24 @@
+
+
+
diff --git a/testing/web-platform/tests/html/cross-origin-embedder-policy/resources/blob-url-factory.html.headers b/testing/web-platform/tests/html/cross-origin-embedder-policy/resources/blob-url-factory.html.headers
new file mode 100644
index 0000000000..4e798cd9f5
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-embedder-policy/resources/blob-url-factory.html.headers
@@ -0,0 +1,2 @@
+Cross-Origin-Embedder-Policy: require-corp
+Cross-Origin-Resource-Policy: cross-origin
diff --git a/testing/web-platform/tests/html/cross-origin-embedder-policy/resources/cache-storage-reporting.js b/testing/web-platform/tests/html/cross-origin-embedder-policy/resources/cache-storage-reporting.js
new file mode 100644
index 0000000000..86dff9c845
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-embedder-policy/resources/cache-storage-reporting.js
@@ -0,0 +1,63 @@
+function remote(path) {
+  const REMOTE_ORIGIN = get_host_info().HTTPS_REMOTE_ORIGIN;
+  return new URL(path, REMOTE_ORIGIN).href;
+}
+
+function local(path) {
+  return new URL(path, location.origin).href;
+}
+
+function encode(url) {
+  return encodeURI(url).replace(/\;/g, '%3B');
+}
+
+const resource_path = (new URL('./resources', location)).pathname;
+const header_coep = '|header(Cross-Origin-Embedder-Policy,require-corp)';
+const header_coep_report_only =
+    '|header(Cross-Origin-Embedder-Policy-Report-Only,require-corp)';
+
+const iframe_path = resource_path + '/iframe.html?pipe=';
+const worker_path = resource_path + '/reporting-worker.js?pipe=';
+const image_url = remote('/images/blue.png');
+
+// This script attempt to load a COEP:require-corp CORP:undefined response from
+// the CacheStorage.
+//
+// Executed from different context:
+// - A Document
+// - A ServiceWorker
+// - A DedicatedWorker
+// - A SharedWorker
+//
+// The context has either COEP or COEP-Report-Only defined.
+const eval_script = `
+  (async function() {
+    try {
+      const cache = await caches.open('v1');
+      const request = new Request('${image_url}', { mode: 'no-cors' });
+      const response = await cache.match(request);
+    } catch(e) {
+    }
+  })()
+`;
+
+promise_setup(async (t) => {
+  const cache = await caches.open('v1');
+  const request = new Request(image_url, {mode: 'no-cors'});
+  const response = await fetch(request);
+  await cache.put(request, response);
+}, 'Setup: store a CORS:cross-origin COEP:none response into CacheStorage')
+
+async function makeIframe(test, iframe_url) {
+  const iframe = document.createElement('iframe');
+  test.add_cleanup(() => iframe.remove());
+  iframe.src = iframe_url;
+  const iframe_loaded = new Promise(resolve => iframe.onload = resolve);
+  document.body.appendChild(iframe);
+  await iframe_loaded;
+  return iframe;
+}
+
+function wait(ms) {
+  return new Promise(resolve => step_timeout(resolve, ms));
+}
diff --git a/testing/web-platform/tests/html/cross-origin-embedder-policy/resources/coep-frame.html b/testing/web-platform/tests/html/cross-origin-embedder-policy/resources/coep-frame.html
new file mode 100644
index 0000000000..78c1331132
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-embedder-policy/resources/coep-frame.html
@@ -0,0 +1,2 @@
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Cross-Origin-Embedder-Policy: require-corp header set.
diff --git a/testing/web-platform/tests/html/cross-origin-embedder-policy/resources/coep-frame.html.headers b/testing/web-platform/tests/html/cross-origin-embedder-policy/resources/coep-frame.html.headers
new file mode 100644
index 0000000000..6604450991
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-embedder-policy/resources/coep-frame.html.headers
@@ -0,0 +1 @@
+Cross-Origin-Embedder-Policy: require-corp
diff --git a/testing/web-platform/tests/html/cross-origin-embedder-policy/resources/common.js b/testing/web-platform/tests/html/cross-origin-embedder-policy/resources/common.js
new file mode 100644
index 0000000000..8f038a7278
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-embedder-policy/resources/common.js
@@ -0,0 +1,19 @@
+async function createIsolatedFrame(origin, headers) {
+  const parent = document.createElement('iframe');
+  const parent_loaded = new Promise(r => parent.onload = () => { r(parent); });
+  const error = new Promise(r => parent.onerror = r);
+  parent.src = origin + "/common/blank.html?pipe=" + headers;
+  parent.anonymous = false;
+  document.body.appendChild(parent);
+  return [parent_loaded, error];
+}
+
+async function IsCrossOriginIsolated(from_token) {
+  const reply_token = token();
+  send(from_token, `
+    send("${reply_token}", self.crossOriginIsolated);
+  `);
+  const reply = await receive(reply_token);
+  assert_true(reply.match(/true|false/) != null);
+  return reply == 'true';
+}
\ No newline at end of file
diff --git a/testing/web-platform/tests/html/cross-origin-embedder-policy/resources/corp-image.py b/testing/web-platform/tests/html/cross-origin-embedder-policy/resources/corp-image.py
new file mode 100644
index 0000000000..e507846181
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-embedder-policy/resources/corp-image.py
@@ -0,0 +1,31 @@
+import json
+import base64
+
+# A 1x1 PNG image.
+# Source: https://commons.wikimedia.org/wiki/File:1x1.png (Public Domain)
+IMAGE = "iVBORw0KGgoAAAANSUhEUgAAAAEAAAABAQMAAAAl21bKAAAAA1BMVEUAAACnej3aAAAAAXRSTlMAQObYZgAAAApJREFUCNdjYAAAAAIAAeIhvDMAAAAASUVORK5CYII="
+
+def main(request, response):
+    response.headers.set(b'Access-Control-Allow-Origin', b'*')
+    response.headers.set(b'Access-Control-Allow-Methods', b'OPTIONS, GET, POST')
+    response.headers.set(b'Access-Control-Allow-Headers', b'Content-Type')
+
+    # CORS preflight
+    if request.method == u'OPTIONS':
+        return u''
+
+    if b'true' == request.GET.get(b'revalidate', None):
+        response.headers.set(b'Cache-Control', b'max-age=0, must-revalidate')
+    else:
+        response.headers.set(b'Cache-Control', b'max-age=3600');
+
+    if b'some-etag' == request.headers.get(b'If-None-Match', None):
+        response.status = 304
+        return u''
+
+    if request.GET.get(b'corp-cross-origin', None):
+        response.headers.set(b'Cross-Origin-Resource-Policy', b'cross-origin')
+
+    response.headers.set(b'Etag', b'some-etag')
+    response.headers.set(b'Content-Type', b'image/png')
+    return base64.b64decode(IMAGE)
diff --git a/testing/web-platform/tests/html/cross-origin-embedder-policy/resources/dedicated-worker-supporting-revalidation.py b/testing/web-platform/tests/html/cross-origin-embedder-policy/resources/dedicated-worker-supporting-revalidation.py
new file mode 100755
index 0000000000..eef86d1c55
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-embedder-policy/resources/dedicated-worker-supporting-revalidation.py
@@ -0,0 +1,15 @@
+#!/usr/bin/env python
+
+
+def main(request, response):
+    headers = []
+    if request.headers.get(b'if-none-match', None):
+        status = 304, u"Not Modified"
+        return status, headers, u""
+    else:
+        headers.append((b"Content-Type", b"text/javascript"))
+        headers.append((b"Cross-Origin-Embedder-Policy", b"require-corp"))
+        headers.append((b"Cache-Control", b"private, max-age=0, must-revalidate"))
+        headers.append((b"ETag", b"abcdef"))
+        status = 200, u"OK"
+        return status, headers, u"self.onmessage = (e) => { self.postMessage('LOADED'); };"
diff --git a/testing/web-platform/tests/html/cross-origin-embedder-policy/resources/dedicated-worker.js b/testing/web-platform/tests/html/cross-origin-embedder-policy/resources/dedicated-worker.js
new file mode 100644
index 0000000000..66f3cc3d41
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-embedder-policy/resources/dedicated-worker.js
@@ -0,0 +1,7 @@
+self.onmessage = (e) => {
+  fetch(e.data, {mode: 'no-cors'}).then(() => {
+    self.postMessage('LOADED');
+  }, () => {
+    self.postMessage('FAILED');
+  });
+};
diff --git a/testing/web-platform/tests/html/cross-origin-embedder-policy/resources/empty-coep.py b/testing/web-platform/tests/html/cross-origin-embedder-policy/resources/empty-coep.py
new file mode 100644
index 0000000000..d0e547b130
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-embedder-policy/resources/empty-coep.py
@@ -0,0 +1,7 @@
+def main(request, response):
+    headers = [(b'Content-Type', b'text/html')]
+
+    for value in request.GET.get_list(b'value'):
+        headers.append((b'Cross-Origin-Embedder-Policy', value))
+
+    return (200, headers, u'')
diff --git a/testing/web-platform/tests/html/cross-origin-embedder-policy/resources/fetch-and-create-url.html b/testing/web-platform/tests/html/cross-origin-embedder-policy/resources/fetch-and-create-url.html
new file mode 100644
index 0000000000..6b0f96221d
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-embedder-policy/resources/fetch-and-create-url.html
@@ -0,0 +1,91 @@
+
+
+Fetch and create Blob
+
diff --git a/testing/web-platform/tests/html/cross-origin-embedder-policy/resources/fetch-in-dedicated-worker.js b/testing/web-platform/tests/html/cross-origin-embedder-policy/resources/fetch-in-dedicated-worker.js
new file mode 100644
index 0000000000..bd60d07952
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-embedder-policy/resources/fetch-in-dedicated-worker.js
@@ -0,0 +1,6 @@
+self.addEventListener('message', async (e) => {
+  const param = e.data;
+  // Ignore network error.
+  await fetch(param.url, param.init).catch(() => {});
+  self.postMessage(param.url);
+});
diff --git a/testing/web-platform/tests/html/cross-origin-embedder-policy/resources/iframe.html b/testing/web-platform/tests/html/cross-origin-embedder-policy/resources/iframe.html
new file mode 100644
index 0000000000..a6b74ad924
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-embedder-policy/resources/iframe.html
@@ -0,0 +1,3 @@
+
diff --git a/testing/web-platform/tests/html/cross-origin-embedder-policy/resources/load-corp-images.html b/testing/web-platform/tests/html/cross-origin-embedder-policy/resources/load-corp-images.html
new file mode 100644
index 0000000000..288610046e
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-embedder-policy/resources/load-corp-images.html
@@ -0,0 +1,38 @@
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/cross-origin-embedder-policy/resources/load-corp-images.html.headers b/testing/web-platform/tests/html/cross-origin-embedder-policy/resources/load-corp-images.html.headers
new file mode 100644
index 0000000000..8df98474b5
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-embedder-policy/resources/load-corp-images.html.headers
@@ -0,0 +1 @@
+cross-origin-embedder-policy: require-corp
diff --git a/testing/web-platform/tests/html/cross-origin-embedder-policy/resources/navigate-none.sub.html b/testing/web-platform/tests/html/cross-origin-embedder-policy/resources/navigate-none.sub.html
new file mode 100644
index 0000000000..f1437ba90a
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-embedder-policy/resources/navigate-none.sub.html
@@ -0,0 +1,34 @@
+
+
diff --git a/testing/web-platform/tests/html/cross-origin-embedder-policy/resources/navigate-require-corp-same-site.sub.html b/testing/web-platform/tests/html/cross-origin-embedder-policy/resources/navigate-require-corp-same-site.sub.html
new file mode 100644
index 0000000000..910317d29b
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-embedder-policy/resources/navigate-require-corp-same-site.sub.html
@@ -0,0 +1,29 @@
+
+
diff --git a/testing/web-platform/tests/html/cross-origin-embedder-policy/resources/navigate-require-corp-same-site.sub.html.headers b/testing/web-platform/tests/html/cross-origin-embedder-policy/resources/navigate-require-corp-same-site.sub.html.headers
new file mode 100644
index 0000000000..56d0ac3428
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-embedder-policy/resources/navigate-require-corp-same-site.sub.html.headers
@@ -0,0 +1,2 @@
+Cross-Origin-Embedder-Policy: require-corp
+Cross-Origin-Resource-Policy: same-site
diff --git a/testing/web-platform/tests/html/cross-origin-embedder-policy/resources/navigate-require-corp.sub.html b/testing/web-platform/tests/html/cross-origin-embedder-policy/resources/navigate-require-corp.sub.html
new file mode 100644
index 0000000000..0a3c4dd8d7
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-embedder-policy/resources/navigate-require-corp.sub.html
@@ -0,0 +1,24 @@
+
+
diff --git a/testing/web-platform/tests/html/cross-origin-embedder-policy/resources/navigate-require-corp.sub.html.headers b/testing/web-platform/tests/html/cross-origin-embedder-policy/resources/navigate-require-corp.sub.html.headers
new file mode 100644
index 0000000000..6604450991
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-embedder-policy/resources/navigate-require-corp.sub.html.headers
@@ -0,0 +1 @@
+Cross-Origin-Embedder-Policy: require-corp
diff --git a/testing/web-platform/tests/html/cross-origin-embedder-policy/resources/nothing-cross-origin-corp.js b/testing/web-platform/tests/html/cross-origin-embedder-policy/resources/nothing-cross-origin-corp.js
new file mode 100644
index 0000000000..662e9364f9
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-embedder-policy/resources/nothing-cross-origin-corp.js
@@ -0,0 +1 @@
+/* Just an empty JS file */
diff --git a/testing/web-platform/tests/html/cross-origin-embedder-policy/resources/nothing-cross-origin-corp.js.headers b/testing/web-platform/tests/html/cross-origin-embedder-policy/resources/nothing-cross-origin-corp.js.headers
new file mode 100644
index 0000000000..1b88136c01
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-embedder-policy/resources/nothing-cross-origin-corp.js.headers
@@ -0,0 +1 @@
+Cross-Origin-Resource-Policy: cross-origin
diff --git a/testing/web-platform/tests/html/cross-origin-embedder-policy/resources/nothing-same-origin-corp.txt b/testing/web-platform/tests/html/cross-origin-embedder-policy/resources/nothing-same-origin-corp.txt
new file mode 100644
index 0000000000..b9ba801f78
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-embedder-policy/resources/nothing-same-origin-corp.txt
@@ -0,0 +1 @@
+nothing with same-origin CORP
diff --git a/testing/web-platform/tests/html/cross-origin-embedder-policy/resources/nothing-same-origin-corp.txt.headers b/testing/web-platform/tests/html/cross-origin-embedder-policy/resources/nothing-same-origin-corp.txt.headers
new file mode 100644
index 0000000000..30ddeac2e7
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-embedder-policy/resources/nothing-same-origin-corp.txt.headers
@@ -0,0 +1 @@
+Cross-Origin-Resource-Policy: same-origin
diff --git a/testing/web-platform/tests/html/cross-origin-embedder-policy/resources/postmessage-ready.html b/testing/web-platform/tests/html/cross-origin-embedder-policy/resources/postmessage-ready.html
new file mode 100644
index 0000000000..3282711dbc
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-embedder-policy/resources/postmessage-ready.html
@@ -0,0 +1,4 @@
+
+
diff --git a/testing/web-platform/tests/html/cross-origin-embedder-policy/resources/report.py b/testing/web-platform/tests/html/cross-origin-embedder-policy/resources/report.py
new file mode 100644
index 0000000000..100c642d6c
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-embedder-policy/resources/report.py
@@ -0,0 +1,41 @@
+import json
+
+def main(request, response):
+    response.headers.set(b'Access-Control-Allow-Origin', b'*')
+    response.headers.set(b'Access-Control-Allow-Methods', b'OPTIONS, GET, POST')
+    response.headers.set(b'Access-Control-Allow-Headers', b'Content-Type')
+    response.headers.set(b'Cache-Control', b'no-cache, no-store, must-revalidate')
+
+    # CORS preflight
+    if request.method == u'OPTIONS':
+        return u''
+
+    uuidMap = {
+        b'endpoint': b'01234567-0123-0123-0123-0123456789AB',
+        b'report-only-endpoint': b'01234567-0123-0123-0123-0123456789CD'
+    }
+    key = 0
+    if b'endpoint' in request.GET:
+        key = uuidMap.get(request.GET[b'endpoint'], 0)
+
+    if b'key' in request.GET:
+        key = request.GET[b'key']
+
+    if key == 0:
+        response.status = 400
+        return u'invalid endpoint'
+
+    path = u'/'.join(request.url_parts.path.split(u'/')[:-1]) + u'/'
+    if request.method == u'POST':
+        reports = request.server.stash.take(key, path) or []
+        for report in json.loads(request.body):
+            reports.append(report)
+        request.server.stash.put(key, reports, path)
+        return u'done'
+
+    if request.method == u'GET':
+        response.headers.set(b'Content-Type', b'application/json')
+        return json.dumps(request.server.stash.take(key, path) or [])
+
+    response.status = 400
+    return u'invalid method'
diff --git a/testing/web-platform/tests/html/cross-origin-embedder-policy/resources/reporting-empty-frame-multiple-headers.html.asis b/testing/web-platform/tests/html/cross-origin-embedder-policy/resources/reporting-empty-frame-multiple-headers.html.asis
new file mode 100644
index 0000000000..c0b352f1c7
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-embedder-policy/resources/reporting-empty-frame-multiple-headers.html.asis
@@ -0,0 +1,9 @@
+HTTP/1.1 200 OK
+Content-Type: text/html
+cross-origin-embedder-policy: require-corp; foo="
+cross-origin-embedder-policy: "; report-to="endpoint"
+cross-origin-embedder-policy-report-only: require-corp; foo="
+cross-origin-embedder-policy-report-only: "; report-to="report-only-endpoint"
+
+
+
diff --git a/testing/web-platform/tests/html/cross-origin-embedder-policy/resources/reporting-empty-frame.html b/testing/web-platform/tests/html/cross-origin-embedder-policy/resources/reporting-empty-frame.html
new file mode 100644
index 0000000000..b1579add2e
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-embedder-policy/resources/reporting-empty-frame.html
@@ -0,0 +1,5 @@
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/cross-origin-embedder-policy/resources/reporting-worker.js b/testing/web-platform/tests/html/cross-origin-embedder-policy/resources/reporting-worker.js
new file mode 100644
index 0000000000..0f8a2ce4c8
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-embedder-policy/resources/reporting-worker.js
@@ -0,0 +1,25 @@
+function run({script, port}) {
+  const reports = [];
+  const observer = new ReportingObserver((rs) => {
+    for (const r of rs) {
+      reports.push(r.toJSON());
+    }
+  });
+  // Wait 200ms for reports to settle.
+  setTimeout(() => {
+    observer.disconnect();
+    port.postMessage(reports);
+  }, 200);
+  observer.observe();
+
+  // This eval call may generate some reports.
+  eval(script);
+}
+
+// For DedicatedWorker and ServiceWorker
+self.addEventListener('message', (e) => run(e.data));
+
+// For SharedWorker
+self.addEventListener('connect', (e) => {
+  e.ports[0].onmessage = (ev) => run(ev.data);
+});
diff --git a/testing/web-platform/tests/html/cross-origin-embedder-policy/resources/require-corp-sw-import-scripts.js b/testing/web-platform/tests/html/cross-origin-embedder-policy/resources/require-corp-sw-import-scripts.js
new file mode 100644
index 0000000000..e652c5bf30
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-embedder-policy/resources/require-corp-sw-import-scripts.js
@@ -0,0 +1,23 @@
+// Service worker with 'COEP: require-corp' response header.
+// This service worker issues a network request to import scripts with or
+// without CORP response header.
+
+importScripts("/common/get-host-info.sub.js");
+
+function url_for_empty_js(corp) {
+  const url = new URL(get_host_info().HTTPS_REMOTE_ORIGIN);
+  url.pathname = '/service-workers/service-worker/resources/empty.js';
+  if (corp) {
+    url.searchParams.set(
+        'pipe', `header(Cross-Origin-Resource-Policy, ${corp})`);
+  }
+  return url.href;
+}
+
+const params = new URL(location.href).searchParams;
+
+if (params.get('corp') === 'cross-origin') {
+  importScripts(url_for_empty_js('cross-origin'));
+} else {
+  importScripts(url_for_empty_js());
+}
diff --git a/testing/web-platform/tests/html/cross-origin-embedder-policy/resources/require-corp-sw-import-scripts.js.headers b/testing/web-platform/tests/html/cross-origin-embedder-policy/resources/require-corp-sw-import-scripts.js.headers
new file mode 100644
index 0000000000..6604450991
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-embedder-policy/resources/require-corp-sw-import-scripts.js.headers
@@ -0,0 +1 @@
+Cross-Origin-Embedder-Policy: require-corp
diff --git a/testing/web-platform/tests/html/cross-origin-embedder-policy/resources/require-corp-sw.js b/testing/web-platform/tests/html/cross-origin-embedder-policy/resources/require-corp-sw.js
new file mode 100644
index 0000000000..fedecee9ea
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-embedder-policy/resources/require-corp-sw.js
@@ -0,0 +1,27 @@
+// Service worker with 'COEP: require-corp' response header.
+// This service worker issues a network request for a resource with or without
+// CORP response header.
+
+importScripts("/common/get-host-info.sub.js");
+
+self.addEventListener('message', e => {
+  e.waitUntil((async () => {
+    let result;
+    try {
+      let url;
+      if (e.data === 'WithCorp') {
+        url = get_host_info().HTTPS_REMOTE_ORIGIN +
+            '/html/cross-origin-embedder-policy/resources/' +
+            'nothing-cross-origin-corp.js';
+      } else if (e.data === 'WithoutCorp') {
+        url = get_host_info().HTTPS_REMOTE_ORIGIN + '/common/blank.html';
+      }
+      const response = await fetch(url, { mode: 'no-cors' });
+      result = response.type;
+    } catch (error) {
+      result = `Exception: ${error.name}`;
+    } finally {
+      e.source.postMessage(result);
+    }
+  })());
+});
diff --git a/testing/web-platform/tests/html/cross-origin-embedder-policy/resources/require-corp-sw.js.headers b/testing/web-platform/tests/html/cross-origin-embedder-policy/resources/require-corp-sw.js.headers
new file mode 100644
index 0000000000..6604450991
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-embedder-policy/resources/require-corp-sw.js.headers
@@ -0,0 +1 @@
+Cross-Origin-Embedder-Policy: require-corp
diff --git a/testing/web-platform/tests/html/cross-origin-embedder-policy/resources/script-factory.js b/testing/web-platform/tests/html/cross-origin-embedder-policy/resources/script-factory.js
new file mode 100644
index 0000000000..ac7a1fda06
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-embedder-policy/resources/script-factory.js
@@ -0,0 +1,30 @@
+// This creates a serialized 
diff --git a/testing/web-platform/tests/html/cross-origin-embedder-policy/resources/worker-owner.js b/testing/web-platform/tests/html/cross-origin-embedder-policy/resources/worker-owner.js
new file mode 100644
index 0000000000..d1f172a0b8
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-embedder-policy/resources/worker-owner.js
@@ -0,0 +1,36 @@
+const is_worker = !('window' in self);
+const parent_or_self = is_worker ? self : self.parent;
+
+function startWorkerAndObserveReports(worker_url, wait_for_report) {
+  const worker = new Worker(worker_url);
+  const result_promise = new Promise(resolve => {
+    worker.onmessage = _ => resolve('success');
+    worker.onerror = _ => resolve('error');
+  });
+  worker.postMessage("postMessage('reply to owner from worker');");
+
+  const report_promise = new Promise(resolve => {
+    const observer = new ReportingObserver(reports => {
+      observer.disconnect();
+      resolve(reports.map(r => r.toJSON()));
+    });
+    observer.observe();
+  });
+
+  if (wait_for_report) {
+    Promise.all([result_promise, report_promise]).then(results => {
+      parent_or_self.postMessage(results[1]);
+    });
+  } else {
+    result_promise.then(result => {
+      parent_or_self.postMessage([]);
+    });
+  }
+}
+
+if (is_worker) {
+  onmessage = e => {
+    startWorkerAndObserveReports(e.data.worker_url, e.data.wait_for_report);
+  };
+}
+
diff --git a/testing/web-platform/tests/html/cross-origin-embedder-policy/resources/worker-support.js b/testing/web-platform/tests/html/cross-origin-embedder-policy/resources/worker-support.js
new file mode 100644
index 0000000000..860ee6826c
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-embedder-policy/resources/worker-support.js
@@ -0,0 +1,81 @@
+// Configures `url` such that the response carries a `COEP: ${value}` header.
+//
+// `url` must be a `URL` instance.
+function setCoep(url, value) {
+  url.searchParams
+      .set("pipe", `header(cross-origin-embedder-policy,${value})`);
+}
+
+// Resolves the given `relativeUrl` relative to the current window's location.
+//
+// `options` can contain the following keys:
+//
+// - `coep`: value passed to `setCoep()`, if present.
+// - `host`: overrides the host of the returned URL.
+//
+// Returns a `URL` instance.
+function resolveUrl(relativeUrl, options) {
+  const url = new URL(relativeUrl, window.location);
+
+  if (options !== undefined) {
+    const { coep, host } = options;
+    if (coep !== undefined) {
+      setCoep(url, coep);
+    }
+    if (host !== undefined) {
+      url.host = host;
+    }
+  }
+
+  return url;
+}
+
+// Adds an iframe loaded from `url` to the current document, waiting for it to
+// load before returning.
+//
+// The returned iframe is removed from the document at the end of the test `t`.
+async function withIframe(t, url) {
+  const frame = document.createElement("iframe");
+  frame.src = url;
+
+  t.add_cleanup(() => frame.remove());
+
+  const loadedPromise = new Promise(resolve => {
+    frame.addEventListener('load', resolve, {once: true});
+  });
+  document.body.append(frame);
+  await loadedPromise;
+
+  return frame;
+}
+
+// Asynchronously waits for a single "message" event on the given `target`.
+function waitForMessage(target) {
+  return new Promise(resolve => {
+    target.addEventListener('message', resolve, {once: true});
+  });
+}
+
+// Fetches `url` from a document with COEP `creatorCoep`, then serializes it
+// and returns a URL pointing to the fetched body with the given `scheme`.
+//
+// - `creatorCoep` is passed to `setCoep()`.
+// - `scheme` may be one of: "blob", "data" or "filesystem".
+//
+// The returned URL is valid until the end of the test `t`.
+async function createLocalUrl(t, { url, creatorCoep, scheme }) {
+  const frameUrl = resolveUrl("resources/fetch-and-create-url.html", {
+    coep: creatorCoep,
+  });
+  frameUrl.searchParams.set("url", url);
+  frameUrl.searchParams.set("scheme", scheme);
+
+  const messagePromise = waitForMessage(window);
+  const frame = await withIframe(t, frameUrl);
+
+  const evt = await messagePromise;
+  const message = evt.data;
+  assert_equals(message.error, undefined, "url creation error");
+
+  return message.url;
+}
diff --git a/testing/web-platform/tests/html/cross-origin-embedder-policy/sandbox.https.html b/testing/web-platform/tests/html/cross-origin-embedder-policy/sandbox.https.html
new file mode 100644
index 0000000000..7a29ac1944
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-embedder-policy/sandbox.https.html
@@ -0,0 +1,40 @@
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
diff --git a/testing/web-platform/tests/html/cross-origin-embedder-policy/sandbox.https.html.headers b/testing/web-platform/tests/html/cross-origin-embedder-policy/sandbox.https.html.headers
new file mode 100644
index 0000000000..6604450991
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-embedder-policy/sandbox.https.html.headers
@@ -0,0 +1 @@
+Cross-Origin-Embedder-Policy: require-corp
diff --git a/testing/web-platform/tests/html/cross-origin-embedder-policy/service-worker-cache-storage.https.html b/testing/web-platform/tests/html/cross-origin-embedder-policy/service-worker-cache-storage.https.html
new file mode 100644
index 0000000000..873f06ce4f
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-embedder-policy/service-worker-cache-storage.https.html
@@ -0,0 +1,117 @@
+
+
+ Check enforcement of COEP in a ServiceWorker using CacheStorage. 
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/cross-origin-embedder-policy/shared-workers.https.html b/testing/web-platform/tests/html/cross-origin-embedder-policy/shared-workers.https.html
new file mode 100644
index 0000000000..2558f2dd0b
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-embedder-policy/shared-workers.https.html
@@ -0,0 +1,228 @@
+
+
+
+COEP - policy derivation for Shared Workers
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Verify the Cross-Origin Embedder Policy for Shared Workers by performing a
+cross-domain "fetch" request for a resource that does not specify a COEP. Only
+Shared Workers with the default COEP should be able to successfully perform
+this operation.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
+
diff --git a/testing/web-platform/tests/html/cross-origin-embedder-policy/srcdoc.https.html b/testing/web-platform/tests/html/cross-origin-embedder-policy/srcdoc.https.html
new file mode 100644
index 0000000000..2937c13381
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-embedder-policy/srcdoc.https.html
@@ -0,0 +1,21 @@
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
diff --git a/testing/web-platform/tests/html/cross-origin-embedder-policy/srcdoc.https.html.headers b/testing/web-platform/tests/html/cross-origin-embedder-policy/srcdoc.https.html.headers
new file mode 100644
index 0000000000..6604450991
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-embedder-policy/srcdoc.https.html.headers
@@ -0,0 +1 @@
+Cross-Origin-Embedder-Policy: require-corp
diff --git a/testing/web-platform/tests/html/cross-origin-embedder-policy/worker-inheritance.sub.https.html b/testing/web-platform/tests/html/cross-origin-embedder-policy/worker-inheritance.sub.https.html
new file mode 100644
index 0000000000..e96c7f7e5d
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-embedder-policy/worker-inheritance.sub.https.html
@@ -0,0 +1,61 @@
+
+Test that local scheme workers inherit COEP: require-corp from the creating document
+
+
+
diff --git a/testing/web-platform/tests/html/cross-origin-embedder-policy/worker-inheritance.sub.https.html.headers b/testing/web-platform/tests/html/cross-origin-embedder-policy/worker-inheritance.sub.https.html.headers
new file mode 100644
index 0000000000..6604450991
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-embedder-policy/worker-inheritance.sub.https.html.headers
@@ -0,0 +1 @@
+Cross-Origin-Embedder-Policy: require-corp
diff --git a/testing/web-platform/tests/html/cross-origin-opener-policy/META.yml b/testing/web-platform/tests/html/cross-origin-opener-policy/META.yml
new file mode 100644
index 0000000000..b9d578d22f
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-opener-policy/META.yml
@@ -0,0 +1,9 @@
+spec: https://html.spec.whatwg.org/multipage/origin.html#cross-origin-opener-policies
+suggested_reviewers:
+  - mikewest
+  - jugglinmike
+  - arturjanc
+  - lweichselbaum
+  - hemeryar
+  - ParisMeuleman
+  - valenting
diff --git a/testing/web-platform/tests/html/cross-origin-opener-policy/README.md b/testing/web-platform/tests/html/cross-origin-opener-policy/README.md
new file mode 100644
index 0000000000..3f080c82d2
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-opener-policy/README.md
@@ -0,0 +1,11 @@
+This directory as well as `../cross-origin-embedder-policy/` contains tests for `Cross-Origin-Opener-Policy` and `Cross-Origin-Embedder-Policy`. Some light background reading:
+
+* [COOP and COEP explained](https://docs.google.com/document/d/1zDlfvfTJ_9e8Jdc8ehuV4zMEu9ySMCiTGMS9y0GU92k/edit)
+* [COOP processing model](https://gist.github.com/annevk/6f2dd8c79c77123f39797f6bdac43f3e) (also defines interaction with COEP)
+* [COEP processing model](https://mikewest.github.io/corpp/)
+* [Open COOP issues](https://github.com/whatwg/html/labels/topic%3A%20cross-origin-opener-policy)
+* [Open COEP issues](https://github.com/whatwg/html/labels/topic%3A%20cross-origin-embedder-policy)
+
+Notes:
+
+* Top-level navigation to a `data:` URL does not work in Chrome and Firefox and is therefore not tested. (This should probably be standardized.)
diff --git a/testing/web-platform/tests/html/cross-origin-opener-policy/blob-popup.https.html b/testing/web-platform/tests/html/cross-origin-opener-policy/blob-popup.https.html
new file mode 100644
index 0000000000..eda150eb34
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-opener-policy/blob-popup.https.html
@@ -0,0 +1,40 @@
+
+Cross-Origin-Opener-Policy and a blob URL popup
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/cross-origin-opener-policy/blob-popup.https.html.headers b/testing/web-platform/tests/html/cross-origin-opener-policy/blob-popup.https.html.headers
new file mode 100644
index 0000000000..46ad58d83b
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-opener-policy/blob-popup.https.html.headers
@@ -0,0 +1 @@
+Cross-Origin-Opener-Policy: same-origin
diff --git a/testing/web-platform/tests/html/cross-origin-opener-policy/coep-blob-popup.https.html b/testing/web-platform/tests/html/cross-origin-opener-policy/coep-blob-popup.https.html
new file mode 100644
index 0000000000..08f70181fc
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-opener-policy/coep-blob-popup.https.html
@@ -0,0 +1,51 @@
+
+Cross-Origin-Opener-Policy and Cross-Origin-Embedder-Policy: blob URL popup
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/cross-origin-opener-policy/coep-blob-popup.https.html.headers b/testing/web-platform/tests/html/cross-origin-opener-policy/coep-blob-popup.https.html.headers
new file mode 100644
index 0000000000..63b60e490f
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-opener-policy/coep-blob-popup.https.html.headers
@@ -0,0 +1,2 @@
+Cross-Origin-Opener-Policy: same-origin
+Cross-Origin-Embedder-Policy: require-corp
diff --git a/testing/web-platform/tests/html/cross-origin-opener-policy/coep-navigate-popup.https.html b/testing/web-platform/tests/html/cross-origin-opener-policy/coep-navigate-popup.https.html
new file mode 100644
index 0000000000..714a4b6c42
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-opener-policy/coep-navigate-popup.https.html
@@ -0,0 +1,72 @@
+
+Cross-Origin-Opener-Policy and Cross-Origin-Embedder-Policy: a navigating popup
+
+
+
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/cross-origin-opener-policy/coep-navigate-popup.https.html.headers b/testing/web-platform/tests/html/cross-origin-opener-policy/coep-navigate-popup.https.html.headers
new file mode 100644
index 0000000000..63b60e490f
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-opener-policy/coep-navigate-popup.https.html.headers
@@ -0,0 +1,2 @@
+Cross-Origin-Opener-Policy: same-origin
+Cross-Origin-Embedder-Policy: require-corp
diff --git a/testing/web-platform/tests/html/cross-origin-opener-policy/coep-redirect.https.html b/testing/web-platform/tests/html/cross-origin-opener-policy/coep-redirect.https.html
new file mode 100644
index 0000000000..83f8f8a33d
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-opener-policy/coep-redirect.https.html
@@ -0,0 +1,68 @@
+
+Cross-Origin-Opener-Policy and Cross-Origin-Embedder-Policy: redirects
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/cross-origin-opener-policy/coep-redirect.https.html.headers b/testing/web-platform/tests/html/cross-origin-opener-policy/coep-redirect.https.html.headers
new file mode 100644
index 0000000000..63b60e490f
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-opener-policy/coep-redirect.https.html.headers
@@ -0,0 +1,2 @@
+Cross-Origin-Opener-Policy: same-origin
+Cross-Origin-Embedder-Policy: require-corp
diff --git a/testing/web-platform/tests/html/cross-origin-opener-policy/coep-with-cross-origin.https.html b/testing/web-platform/tests/html/cross-origin-opener-policy/coep-with-cross-origin.https.html
new file mode 100644
index 0000000000..3f6256bcd2
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-opener-policy/coep-with-cross-origin.https.html
@@ -0,0 +1,44 @@
+
+Cross-Origin-Opener-Policy and Cross-Origin-Embedder-Policy
+
+
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/cross-origin-opener-policy/coep-with-cross-origin.https.html.headers b/testing/web-platform/tests/html/cross-origin-opener-policy/coep-with-cross-origin.https.html.headers
new file mode 100644
index 0000000000..63b60e490f
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-opener-policy/coep-with-cross-origin.https.html.headers
@@ -0,0 +1,2 @@
+Cross-Origin-Opener-Policy: same-origin
+Cross-Origin-Embedder-Policy: require-corp
diff --git a/testing/web-platform/tests/html/cross-origin-opener-policy/coep-with-same-origin.https.html b/testing/web-platform/tests/html/cross-origin-opener-policy/coep-with-same-origin.https.html
new file mode 100644
index 0000000000..66e7aaf88e
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-opener-policy/coep-with-same-origin.https.html
@@ -0,0 +1,44 @@
+
+Cross-Origin-Opener-Policy and Cross-Origin-Embedder-Policy
+
+
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/cross-origin-opener-policy/coep-with-same-origin.https.html.headers b/testing/web-platform/tests/html/cross-origin-opener-policy/coep-with-same-origin.https.html.headers
new file mode 100644
index 0000000000..63b60e490f
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-opener-policy/coep-with-same-origin.https.html.headers
@@ -0,0 +1,2 @@
+Cross-Origin-Opener-Policy: same-origin
+Cross-Origin-Embedder-Policy: require-corp
diff --git a/testing/web-platform/tests/html/cross-origin-opener-policy/coep-with-same-site.https.html b/testing/web-platform/tests/html/cross-origin-opener-policy/coep-with-same-site.https.html
new file mode 100644
index 0000000000..abce659790
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-opener-policy/coep-with-same-site.https.html
@@ -0,0 +1,44 @@
+
+Cross-Origin-Opener-Policy and Cross-Origin-Embedder-Policy
+
+
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/cross-origin-opener-policy/coep-with-same-site.https.html.headers b/testing/web-platform/tests/html/cross-origin-opener-policy/coep-with-same-site.https.html.headers
new file mode 100644
index 0000000000..63b60e490f
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-opener-policy/coep-with-same-site.https.html.headers
@@ -0,0 +1,2 @@
+Cross-Origin-Opener-Policy: same-origin
+Cross-Origin-Embedder-Policy: require-corp
diff --git a/testing/web-platform/tests/html/cross-origin-opener-policy/coop-coep-sandbox.https.html b/testing/web-platform/tests/html/cross-origin-opener-policy/coop-coep-sandbox.https.html
new file mode 100644
index 0000000000..4b94435119
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-opener-policy/coop-coep-sandbox.https.html
@@ -0,0 +1,59 @@
+
+Sandboxed Cross-Origin-Opener-Policy popup should result in a network error
+
+
+ 
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
diff --git a/testing/web-platform/tests/html/cross-origin-opener-policy/coop-coep-sandbox.https.html.headers b/testing/web-platform/tests/html/cross-origin-opener-policy/coop-coep-sandbox.https.html.headers
new file mode 100644
index 0000000000..4fff9d9fba
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-opener-policy/coop-coep-sandbox.https.html.headers
@@ -0,0 +1,2 @@
+Cross-Origin-Opener-Policy: same-origin
+Cross-Origin-Embedder-Policy: require-corp
\ No newline at end of file
diff --git a/testing/web-platform/tests/html/cross-origin-opener-policy/coop-csp-sandbox-navigate.https.html b/testing/web-platform/tests/html/cross-origin-opener-policy/coop-csp-sandbox-navigate.https.html
new file mode 100644
index 0000000000..be2d83214a
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-opener-policy/coop-csp-sandbox-navigate.https.html
@@ -0,0 +1,40 @@
+
+CSP sandbox popup navigate to Cross-Origin-Opener-Policy document should work
+
+
+
+ 
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
diff --git a/testing/web-platform/tests/html/cross-origin-opener-policy/coop-csp-sandbox.https.html b/testing/web-platform/tests/html/cross-origin-opener-policy/coop-csp-sandbox.https.html
new file mode 100644
index 0000000000..259d484df2
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-opener-policy/coop-csp-sandbox.https.html
@@ -0,0 +1,24 @@
+
+CSP sandboxed Cross-Origin-Opener-Policy popup should result in a network error
+
+
+ 
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
diff --git a/testing/web-platform/tests/html/cross-origin-opener-policy/coop-navigate-same-origin-csp-sandbox.html b/testing/web-platform/tests/html/cross-origin-opener-policy/coop-navigate-same-origin-csp-sandbox.html
new file mode 100644
index 0000000000..83113de376
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-opener-policy/coop-navigate-same-origin-csp-sandbox.html
@@ -0,0 +1,63 @@
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/cross-origin-opener-policy/coop-navigated-history-popup.https.html b/testing/web-platform/tests/html/cross-origin-opener-policy/coop-navigated-history-popup.https.html
new file mode 100644
index 0000000000..a061be992c
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-opener-policy/coop-navigated-history-popup.https.html
@@ -0,0 +1,18 @@
+
+Cross-Origin-Opener-Policy: a navigating popup that then goes back in history
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/cross-origin-opener-policy/coop-navigated-popup.https.html b/testing/web-platform/tests/html/cross-origin-opener-policy/coop-navigated-popup.https.html
new file mode 100644
index 0000000000..ef610a488f
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-opener-policy/coop-navigated-popup.https.html
@@ -0,0 +1,37 @@
+
+Cross-Origin-Opener-Policy: a navigated popup
+
+
+
+ 
+
diff --git a/testing/web-platform/tests/html/cross-origin-opener-policy/coop-navigated-popup.https.html.headers b/testing/web-platform/tests/html/cross-origin-opener-policy/coop-navigated-popup.https.html.headers
new file mode 100644
index 0000000000..d83ed86fb9
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-opener-policy/coop-navigated-popup.https.html.headers
@@ -0,0 +1 @@
+Cross-Origin-Opener-Policy: same-origin-allow-popups
diff --git a/testing/web-platform/tests/html/cross-origin-opener-policy/coop-popup-opener-navigates.https.html b/testing/web-platform/tests/html/cross-origin-opener-policy/coop-popup-opener-navigates.https.html
new file mode 100644
index 0000000000..a6c63654a9
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-opener-policy/coop-popup-opener-navigates.https.html
@@ -0,0 +1,84 @@
+
+
+    Cross-Origin-Opener-Policy: opener is lost because the opener navigates.
+
+
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/cross-origin-opener-policy/coop-popup-opener-navigates.https.html.headers b/testing/web-platform/tests/html/cross-origin-opener-policy/coop-popup-opener-navigates.https.html.headers
new file mode 100644
index 0000000000..46ad58d83b
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-opener-policy/coop-popup-opener-navigates.https.html.headers
@@ -0,0 +1 @@
+Cross-Origin-Opener-Policy: same-origin
diff --git a/testing/web-platform/tests/html/cross-origin-opener-policy/coop-same-origin-allow-popups-document-write.html b/testing/web-platform/tests/html/cross-origin-opener-policy/coop-same-origin-allow-popups-document-write.html
new file mode 100644
index 0000000000..82dd4541b6
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-opener-policy/coop-same-origin-allow-popups-document-write.html
@@ -0,0 +1,62 @@
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/cross-origin-opener-policy/coop-sandbox-cuts-opener.https.html b/testing/web-platform/tests/html/cross-origin-opener-policy/coop-sandbox-cuts-opener.https.html
new file mode 100644
index 0000000000..47e6d0d6fe
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-opener-policy/coop-sandbox-cuts-opener.https.html
@@ -0,0 +1,66 @@
+
+
+  Sandboxed Cross-Origin-Opener-Policy popup should cut the opener if necessary
+
+
+
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/cross-origin-opener-policy/coop-sandbox-redirects-cuts-opener.https.html b/testing/web-platform/tests/html/cross-origin-opener-policy/coop-sandbox-redirects-cuts-opener.https.html
new file mode 100644
index 0000000000..01f60b425d
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-opener-policy/coop-sandbox-redirects-cuts-opener.https.html
@@ -0,0 +1,68 @@
+
+
+  Sandboxed Cross-Origin-Opener-Policy popup should cut the opener if necessary
+  including during redirects.
+
+
+
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/cross-origin-opener-policy/coop-sandbox.https.html b/testing/web-platform/tests/html/cross-origin-opener-policy/coop-sandbox.https.html
new file mode 100644
index 0000000000..6f250c1b09
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-opener-policy/coop-sandbox.https.html
@@ -0,0 +1,59 @@
+
+Sandboxed Cross-Origin-Opener-Policy popup should result in a network error
+
+
+ 
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
diff --git a/testing/web-platform/tests/html/cross-origin-opener-policy/coop-sandbox.https.html.headers b/testing/web-platform/tests/html/cross-origin-opener-policy/coop-sandbox.https.html.headers
new file mode 100644
index 0000000000..46ad58d83b
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-opener-policy/coop-sandbox.https.html.headers
@@ -0,0 +1 @@
+Cross-Origin-Opener-Policy: same-origin
diff --git a/testing/web-platform/tests/html/cross-origin-opener-policy/header-parsing-failures.https.html b/testing/web-platform/tests/html/cross-origin-opener-policy/header-parsing-failures.https.html
new file mode 100644
index 0000000000..55b126ff37
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-opener-policy/header-parsing-failures.https.html
@@ -0,0 +1,90 @@
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/cross-origin-opener-policy/header-parsing-non-ascii.https.html b/testing/web-platform/tests/html/cross-origin-opener-policy/header-parsing-non-ascii.https.html
new file mode 100644
index 0000000000..b5f20f88f4
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-opener-policy/header-parsing-non-ascii.https.html
@@ -0,0 +1,17 @@
+
+
+
+
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/cross-origin-opener-policy/header-parsing-non-ascii.https.html.headers b/testing/web-platform/tests/html/cross-origin-opener-policy/header-parsing-non-ascii.https.html.headers
new file mode 100644
index 0000000000..54e44a7113
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-opener-policy/header-parsing-non-ascii.https.html.headers
@@ -0,0 +1 @@
+Cross-Origin-Opener-Policy: same%FForigin
diff --git a/testing/web-platform/tests/html/cross-origin-opener-policy/header-parsing-repeated.https.html b/testing/web-platform/tests/html/cross-origin-opener-policy/header-parsing-repeated.https.html
new file mode 100644
index 0000000000..a1430cbf57
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-opener-policy/header-parsing-repeated.https.html
@@ -0,0 +1,16 @@
+
+
+
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/cross-origin-opener-policy/header-parsing-repeated.https.html.headers b/testing/web-platform/tests/html/cross-origin-opener-policy/header-parsing-repeated.https.html.headers
new file mode 100644
index 0000000000..85c58be8a1
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-opener-policy/header-parsing-repeated.https.html.headers
@@ -0,0 +1,2 @@
+Cross-Origin-Opener-Policy: same-origin
+Cross-Origin-Opener-Policy: same-origin
diff --git a/testing/web-platform/tests/html/cross-origin-opener-policy/header-parsing-successes.https.html b/testing/web-platform/tests/html/cross-origin-opener-policy/header-parsing-successes.https.html
new file mode 100644
index 0000000000..8e055669ad
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-opener-policy/header-parsing-successes.https.html
@@ -0,0 +1,44 @@
+
+
+
+
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/cross-origin-opener-policy/historical/coep-navigate-popup-unsafe-inherit.https.html b/testing/web-platform/tests/html/cross-origin-opener-policy/historical/coep-navigate-popup-unsafe-inherit.https.html
new file mode 100644
index 0000000000..8368dc4c81
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-opener-policy/historical/coep-navigate-popup-unsafe-inherit.https.html
@@ -0,0 +1,40 @@
+
+Historical: Cross-Origin-Opener-Policy and Cross-Origin-Embedder-Policy: a navigating popup
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/cross-origin-opener-policy/historical/popup-same-origin-unsafe-allow-outgoing-with-cross-origin.https.html b/testing/web-platform/tests/html/cross-origin-opener-policy/historical/popup-same-origin-unsafe-allow-outgoing-with-cross-origin.https.html
new file mode 100644
index 0000000000..21e0875f41
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-opener-policy/historical/popup-same-origin-unsafe-allow-outgoing-with-cross-origin.https.html
@@ -0,0 +1,58 @@
+
+
+
+
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/cross-origin-opener-policy/historical/popup-same-origin-unsafe-allow-outgoing-with-cross-origin.https.html.headers b/testing/web-platform/tests/html/cross-origin-opener-policy/historical/popup-same-origin-unsafe-allow-outgoing-with-cross-origin.https.html.headers
new file mode 100644
index 0000000000..a19f4400ce
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-opener-policy/historical/popup-same-origin-unsafe-allow-outgoing-with-cross-origin.https.html.headers
@@ -0,0 +1 @@
+Cross-Origin-Opener-Policy: same-origin unsafe-allow-outgoing
diff --git a/testing/web-platform/tests/html/cross-origin-opener-policy/historical/popup-same-origin-unsafe-allow-outgoing-with-same-origin.https.html b/testing/web-platform/tests/html/cross-origin-opener-policy/historical/popup-same-origin-unsafe-allow-outgoing-with-same-origin.https.html
new file mode 100644
index 0000000000..89b0b4934e
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-opener-policy/historical/popup-same-origin-unsafe-allow-outgoing-with-same-origin.https.html
@@ -0,0 +1,58 @@
+
+
+
+
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/cross-origin-opener-policy/historical/popup-same-origin-unsafe-allow-outgoing-with-same-origin.https.html.headers b/testing/web-platform/tests/html/cross-origin-opener-policy/historical/popup-same-origin-unsafe-allow-outgoing-with-same-origin.https.html.headers
new file mode 100644
index 0000000000..a19f4400ce
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-opener-policy/historical/popup-same-origin-unsafe-allow-outgoing-with-same-origin.https.html.headers
@@ -0,0 +1 @@
+Cross-Origin-Opener-Policy: same-origin unsafe-allow-outgoing
diff --git a/testing/web-platform/tests/html/cross-origin-opener-policy/historical/popup-same-origin-unsafe-allow-outgoing-with-same-site.https.html b/testing/web-platform/tests/html/cross-origin-opener-policy/historical/popup-same-origin-unsafe-allow-outgoing-with-same-site.https.html
new file mode 100644
index 0000000000..fb3330365f
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-opener-policy/historical/popup-same-origin-unsafe-allow-outgoing-with-same-site.https.html
@@ -0,0 +1,58 @@
+
+
+
+
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/cross-origin-opener-policy/historical/popup-same-origin-unsafe-allow-outgoing-with-same-site.https.html.headers b/testing/web-platform/tests/html/cross-origin-opener-policy/historical/popup-same-origin-unsafe-allow-outgoing-with-same-site.https.html.headers
new file mode 100644
index 0000000000..a19f4400ce
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-opener-policy/historical/popup-same-origin-unsafe-allow-outgoing-with-same-site.https.html.headers
@@ -0,0 +1 @@
+Cross-Origin-Opener-Policy: same-origin unsafe-allow-outgoing
diff --git a/testing/web-platform/tests/html/cross-origin-opener-policy/historical/popup-same-site-unsafe-allow-outgoing-with-cross-origin.https.html b/testing/web-platform/tests/html/cross-origin-opener-policy/historical/popup-same-site-unsafe-allow-outgoing-with-cross-origin.https.html
new file mode 100644
index 0000000000..21e0875f41
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-opener-policy/historical/popup-same-site-unsafe-allow-outgoing-with-cross-origin.https.html
@@ -0,0 +1,58 @@
+
+
+
+
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/cross-origin-opener-policy/historical/popup-same-site-unsafe-allow-outgoing-with-cross-origin.https.html.headers b/testing/web-platform/tests/html/cross-origin-opener-policy/historical/popup-same-site-unsafe-allow-outgoing-with-cross-origin.https.html.headers
new file mode 100644
index 0000000000..ab7b289481
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-opener-policy/historical/popup-same-site-unsafe-allow-outgoing-with-cross-origin.https.html.headers
@@ -0,0 +1 @@
+Cross-Origin-Opener-Policy: same-site unsafe-allow-outgoing
diff --git a/testing/web-platform/tests/html/cross-origin-opener-policy/historical/popup-same-site-unsafe-allow-outgoing-with-same-origin.https.html b/testing/web-platform/tests/html/cross-origin-opener-policy/historical/popup-same-site-unsafe-allow-outgoing-with-same-origin.https.html
new file mode 100644
index 0000000000..89b0b4934e
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-opener-policy/historical/popup-same-site-unsafe-allow-outgoing-with-same-origin.https.html
@@ -0,0 +1,58 @@
+
+
+
+
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/cross-origin-opener-policy/historical/popup-same-site-unsafe-allow-outgoing-with-same-origin.https.html.headers b/testing/web-platform/tests/html/cross-origin-opener-policy/historical/popup-same-site-unsafe-allow-outgoing-with-same-origin.https.html.headers
new file mode 100644
index 0000000000..ab7b289481
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-opener-policy/historical/popup-same-site-unsafe-allow-outgoing-with-same-origin.https.html.headers
@@ -0,0 +1 @@
+Cross-Origin-Opener-Policy: same-site unsafe-allow-outgoing
diff --git a/testing/web-platform/tests/html/cross-origin-opener-policy/historical/popup-same-site-unsafe-allow-outgoing-with-same-site.https.html b/testing/web-platform/tests/html/cross-origin-opener-policy/historical/popup-same-site-unsafe-allow-outgoing-with-same-site.https.html
new file mode 100644
index 0000000000..fb3330365f
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-opener-policy/historical/popup-same-site-unsafe-allow-outgoing-with-same-site.https.html
@@ -0,0 +1,58 @@
+
+
+
+
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/cross-origin-opener-policy/historical/popup-same-site-unsafe-allow-outgoing-with-same-site.https.html.headers b/testing/web-platform/tests/html/cross-origin-opener-policy/historical/popup-same-site-unsafe-allow-outgoing-with-same-site.https.html.headers
new file mode 100644
index 0000000000..ab7b289481
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-opener-policy/historical/popup-same-site-unsafe-allow-outgoing-with-same-site.https.html.headers
@@ -0,0 +1 @@
+Cross-Origin-Opener-Policy: same-site unsafe-allow-outgoing
diff --git a/testing/web-platform/tests/html/cross-origin-opener-policy/historical/popup-same-site-with-cross-origin.https.html b/testing/web-platform/tests/html/cross-origin-opener-policy/historical/popup-same-site-with-cross-origin.https.html
new file mode 100644
index 0000000000..21e0875f41
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-opener-policy/historical/popup-same-site-with-cross-origin.https.html
@@ -0,0 +1,58 @@
+
+
+
+
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/cross-origin-opener-policy/historical/popup-same-site-with-cross-origin.https.html.headers b/testing/web-platform/tests/html/cross-origin-opener-policy/historical/popup-same-site-with-cross-origin.https.html.headers
new file mode 100644
index 0000000000..34bd099a30
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-opener-policy/historical/popup-same-site-with-cross-origin.https.html.headers
@@ -0,0 +1 @@
+Cross-Origin-Opener-Policy: same-site
diff --git a/testing/web-platform/tests/html/cross-origin-opener-policy/historical/popup-same-site-with-same-origin.https.html b/testing/web-platform/tests/html/cross-origin-opener-policy/historical/popup-same-site-with-same-origin.https.html
new file mode 100644
index 0000000000..89b0b4934e
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-opener-policy/historical/popup-same-site-with-same-origin.https.html
@@ -0,0 +1,58 @@
+
+
+
+
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/cross-origin-opener-policy/historical/popup-same-site-with-same-origin.https.html.headers b/testing/web-platform/tests/html/cross-origin-opener-policy/historical/popup-same-site-with-same-origin.https.html.headers
new file mode 100644
index 0000000000..34bd099a30
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-opener-policy/historical/popup-same-site-with-same-origin.https.html.headers
@@ -0,0 +1 @@
+Cross-Origin-Opener-Policy: same-site
diff --git a/testing/web-platform/tests/html/cross-origin-opener-policy/historical/popup-same-site-with-same-site.https.html b/testing/web-platform/tests/html/cross-origin-opener-policy/historical/popup-same-site-with-same-site.https.html
new file mode 100644
index 0000000000..fb3330365f
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-opener-policy/historical/popup-same-site-with-same-site.https.html
@@ -0,0 +1,58 @@
+
+
+
+
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/cross-origin-opener-policy/historical/popup-same-site-with-same-site.https.html.headers b/testing/web-platform/tests/html/cross-origin-opener-policy/historical/popup-same-site-with-same-site.https.html.headers
new file mode 100644
index 0000000000..34bd099a30
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-opener-policy/historical/popup-same-site-with-same-site.https.html.headers
@@ -0,0 +1 @@
+Cross-Origin-Opener-Policy: same-site
diff --git a/testing/web-platform/tests/html/cross-origin-opener-policy/iframe-popup-same-origin-allow-popups-to-same-origin-allow-popups.https.html b/testing/web-platform/tests/html/cross-origin-opener-policy/iframe-popup-same-origin-allow-popups-to-same-origin-allow-popups.https.html
new file mode 100644
index 0000000000..099424790a
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-opener-policy/iframe-popup-same-origin-allow-popups-to-same-origin-allow-popups.https.html
@@ -0,0 +1,88 @@
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/cross-origin-opener-policy/iframe-popup-same-origin-allow-popups-to-same-origin-allow-popups.https.html.headers b/testing/web-platform/tests/html/cross-origin-opener-policy/iframe-popup-same-origin-allow-popups-to-same-origin-allow-popups.https.html.headers
new file mode 100644
index 0000000000..d83ed86fb9
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-opener-policy/iframe-popup-same-origin-allow-popups-to-same-origin-allow-popups.https.html.headers
@@ -0,0 +1 @@
+Cross-Origin-Opener-Policy: same-origin-allow-popups
diff --git a/testing/web-platform/tests/html/cross-origin-opener-policy/iframe-popup-same-origin-allow-popups-to-same-origin.https.html b/testing/web-platform/tests/html/cross-origin-opener-policy/iframe-popup-same-origin-allow-popups-to-same-origin.https.html
new file mode 100644
index 0000000000..34699c8d08
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-opener-policy/iframe-popup-same-origin-allow-popups-to-same-origin.https.html
@@ -0,0 +1,86 @@
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/cross-origin-opener-policy/iframe-popup-same-origin-allow-popups-to-same-origin.https.html.headers b/testing/web-platform/tests/html/cross-origin-opener-policy/iframe-popup-same-origin-allow-popups-to-same-origin.https.html.headers
new file mode 100644
index 0000000000..d83ed86fb9
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-opener-policy/iframe-popup-same-origin-allow-popups-to-same-origin.https.html.headers
@@ -0,0 +1 @@
+Cross-Origin-Opener-Policy: same-origin-allow-popups
diff --git a/testing/web-platform/tests/html/cross-origin-opener-policy/iframe-popup-same-origin-allow-popups-to-unsafe-none.https.html b/testing/web-platform/tests/html/cross-origin-opener-policy/iframe-popup-same-origin-allow-popups-to-unsafe-none.https.html
new file mode 100644
index 0000000000..29fb5cfa2d
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-opener-policy/iframe-popup-same-origin-allow-popups-to-unsafe-none.https.html
@@ -0,0 +1,85 @@
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/cross-origin-opener-policy/iframe-popup-same-origin-allow-popups-to-unsafe-none.https.html.headers b/testing/web-platform/tests/html/cross-origin-opener-policy/iframe-popup-same-origin-allow-popups-to-unsafe-none.https.html.headers
new file mode 100644
index 0000000000..d83ed86fb9
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-opener-policy/iframe-popup-same-origin-allow-popups-to-unsafe-none.https.html.headers
@@ -0,0 +1 @@
+Cross-Origin-Opener-Policy: same-origin-allow-popups
diff --git a/testing/web-platform/tests/html/cross-origin-opener-policy/iframe-popup-same-origin-to-same-origin.https.html b/testing/web-platform/tests/html/cross-origin-opener-policy/iframe-popup-same-origin-to-same-origin.https.html
new file mode 100644
index 0000000000..7d31256584
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-opener-policy/iframe-popup-same-origin-to-same-origin.https.html
@@ -0,0 +1,88 @@
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/cross-origin-opener-policy/iframe-popup-same-origin-to-same-origin.https.html.headers b/testing/web-platform/tests/html/cross-origin-opener-policy/iframe-popup-same-origin-to-same-origin.https.html.headers
new file mode 100644
index 0000000000..46ad58d83b
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-opener-policy/iframe-popup-same-origin-to-same-origin.https.html.headers
@@ -0,0 +1 @@
+Cross-Origin-Opener-Policy: same-origin
diff --git a/testing/web-platform/tests/html/cross-origin-opener-policy/iframe-popup-same-origin-to-unsafe-none.https.html b/testing/web-platform/tests/html/cross-origin-opener-policy/iframe-popup-same-origin-to-unsafe-none.https.html
new file mode 100644
index 0000000000..847f75665b
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-opener-policy/iframe-popup-same-origin-to-unsafe-none.https.html
@@ -0,0 +1,87 @@
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/cross-origin-opener-policy/iframe-popup-same-origin-to-unsafe-none.https.html.headers b/testing/web-platform/tests/html/cross-origin-opener-policy/iframe-popup-same-origin-to-unsafe-none.https.html.headers
new file mode 100644
index 0000000000..46ad58d83b
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-opener-policy/iframe-popup-same-origin-to-unsafe-none.https.html.headers
@@ -0,0 +1 @@
+Cross-Origin-Opener-Policy: same-origin
diff --git a/testing/web-platform/tests/html/cross-origin-opener-policy/iframe-popup-unsafe-none-to-same-origin.https.html b/testing/web-platform/tests/html/cross-origin-opener-policy/iframe-popup-unsafe-none-to-same-origin.https.html
new file mode 100644
index 0000000000..8158b9f4d5
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-opener-policy/iframe-popup-unsafe-none-to-same-origin.https.html
@@ -0,0 +1,87 @@
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/cross-origin-opener-policy/iframe-popup-unsafe-none-to-same-origin.https.html.headers b/testing/web-platform/tests/html/cross-origin-opener-policy/iframe-popup-unsafe-none-to-same-origin.https.html.headers
new file mode 100644
index 0000000000..073ce7adfb
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-opener-policy/iframe-popup-unsafe-none-to-same-origin.https.html.headers
@@ -0,0 +1 @@
+Cross-Origin-Opener-Policy: unsafe-none
diff --git a/testing/web-platform/tests/html/cross-origin-opener-policy/iframe-popup-unsafe-none-to-unsafe-none.https.html b/testing/web-platform/tests/html/cross-origin-opener-policy/iframe-popup-unsafe-none-to-unsafe-none.https.html
new file mode 100644
index 0000000000..74ceeb290d
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-opener-policy/iframe-popup-unsafe-none-to-unsafe-none.https.html
@@ -0,0 +1,85 @@
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/cross-origin-opener-policy/iframe-popup-unsafe-none-to-unsafe-none.https.html.headers b/testing/web-platform/tests/html/cross-origin-opener-policy/iframe-popup-unsafe-none-to-unsafe-none.https.html.headers
new file mode 100644
index 0000000000..073ce7adfb
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-opener-policy/iframe-popup-unsafe-none-to-unsafe-none.https.html.headers
@@ -0,0 +1 @@
+Cross-Origin-Opener-Policy: unsafe-none
diff --git a/testing/web-platform/tests/html/cross-origin-opener-policy/javascript-url.https.html b/testing/web-platform/tests/html/cross-origin-opener-policy/javascript-url.https.html
new file mode 100644
index 0000000000..8ebb3ccd4a
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-opener-policy/javascript-url.https.html
@@ -0,0 +1,199 @@
+
+Cross-Origin-Opener-Policy and a "javascript:" URL popup
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  According to HTML's navigate algorithm, requests to javascript:
+URLs should inherit the cross-origin opener policy of the active document. To
+observe this, each subtest uses the following procedure.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  1. create popup with a given COOP (the parentCOOP)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    2. 
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  2. navigate the popup to a javascript: URL (the new document is
+  expected to inherit the parentCOOP)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    3. 
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  3. from the popup, create a second popup window with a given COOP (the
+  childCOOP)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    4. 
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Both popup windows inspect state and report back to the test.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  +    .---- test ----.
+    | open(https:) |
+    |  parentCOOP  |   .----- subject -------.
+    |      '---------> | --------.           |
+    |              |   |         v           |
+    |              |   | assign(javascript:) |
+    |              |   |  (COOP under test)  |
+    |              |   |         |           |
+    |              |   |    open(https:)     |
+    |              |   |     childCOOP       |    .- child -.
+    |              |   |         '--------------> |         |
+    |              |   '---------------------'    '---------'
+    |              |             |                     |
+    |  validate    | <--status---+---------------------'
+    '--------------'
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
diff --git a/testing/web-platform/tests/html/cross-origin-opener-policy/navigate-to-aboutblank.https.html b/testing/web-platform/tests/html/cross-origin-opener-policy/navigate-to-aboutblank.https.html
new file mode 100644
index 0000000000..b2145cfa56
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-opener-policy/navigate-to-aboutblank.https.html
@@ -0,0 +1,193 @@
+
+  This tests the inheritance of COOP for navigations to about:blank.
+
+
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Non-initial empty documents (about:blank) should inherit their
+  cross-origin-opener-policy from the navigation's initiator top level document,
+  if the initiator and its top level document are same-origin, or default
+  (unsafe-none) otherwise.
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  1. Create the opener popup with a given COOP openerCOOP.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    2. 
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  2. Add iframe to the opener popup that is either same-origin or
+    cross-origin.
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    3. 
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  3. Opener's iframe opens a new window, to a network document with openeeCOOP.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    4. 
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  4. Opener's iframe navigates the openee popup to about:blank.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    5. 
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
diff --git a/testing/web-platform/tests/html/cross-origin-opener-policy/navigate-top-to-aboutblank.https.html b/testing/web-platform/tests/html/cross-origin-opener-policy/navigate-top-to-aboutblank.https.html
new file mode 100644
index 0000000000..fe605baf45
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-opener-policy/navigate-top-to-aboutblank.https.html
@@ -0,0 +1,171 @@
+
+  This tests the inheritance of COOP for navigations of the top document to about:blank.
+
+
+
+
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Non-initial empty documents (about:blank) should inherit their
+  cross-origin-opener-policy from the navigation's initiator top level document,
+  if the initiator and its top level document are same-origin, or default (to
+  unsafe-none) otherwise.
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  1. Create the opener popup with a given COOP openerCOOP.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    2. 
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  2. Add iframe to the opener popup that is either same-origin or
+    cross-origin.
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    3. 
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  3. Opener opens a new window, to a network document with the same origin and
+    COOP value as opener.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    4. 
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  4. Opener's iframe navigates its parent frame (opener) to about:blank.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    5. 
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  5. Verify the openee still has access to its opener.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    6. 
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
diff --git a/testing/web-platform/tests/html/cross-origin-opener-policy/no-https.html b/testing/web-platform/tests/html/cross-origin-opener-policy/no-https.html
new file mode 100644
index 0000000000..db15d5c676
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-opener-policy/no-https.html
@@ -0,0 +1,21 @@
+
+
+Cross-Origin-Opener-Policy requires secure contexts
+
+
+
diff --git a/testing/web-platform/tests/html/cross-origin-opener-policy/no-https.html.headers b/testing/web-platform/tests/html/cross-origin-opener-policy/no-https.html.headers
new file mode 100644
index 0000000000..46ad58d83b
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-opener-policy/no-https.html.headers
@@ -0,0 +1 @@
+Cross-Origin-Opener-Policy: same-origin
diff --git a/testing/web-platform/tests/html/cross-origin-opener-policy/popup-coop-by-sw.https.html b/testing/web-platform/tests/html/cross-origin-opener-policy/popup-coop-by-sw.https.html
new file mode 100644
index 0000000000..69c2db1ad9
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-opener-policy/popup-coop-by-sw.https.html
@@ -0,0 +1,136 @@
+
+
+
+
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/cross-origin-opener-policy/popup-meta-http-equiv.https.html b/testing/web-platform/tests/html/cross-origin-opener-policy/popup-meta-http-equiv.https.html
new file mode 100644
index 0000000000..157f7aef46
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-opener-policy/popup-meta-http-equiv.https.html
@@ -0,0 +1,24 @@
+
+
+
+
+
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/cross-origin-opener-policy/popup-redirect-cache.https.html b/testing/web-platform/tests/html/cross-origin-opener-policy/popup-redirect-cache.https.html
new file mode 100644
index 0000000000..6568ac3fdb
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-opener-policy/popup-redirect-cache.https.html
@@ -0,0 +1,90 @@
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
diff --git a/testing/web-platform/tests/html/cross-origin-opener-policy/popup-redirect-cache.https.html.headers b/testing/web-platform/tests/html/cross-origin-opener-policy/popup-redirect-cache.https.html.headers
new file mode 100644
index 0000000000..46ad58d83b
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-opener-policy/popup-redirect-cache.https.html.headers
@@ -0,0 +1 @@
+Cross-Origin-Opener-Policy: same-origin
diff --git a/testing/web-platform/tests/html/cross-origin-opener-policy/popup-redirect-same-origin-allow-popups.https.html b/testing/web-platform/tests/html/cross-origin-opener-policy/popup-redirect-same-origin-allow-popups.https.html
new file mode 100644
index 0000000000..73119a76f8
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-opener-policy/popup-redirect-same-origin-allow-popups.https.html
@@ -0,0 +1,96 @@
+
+  Tests the interaction of COOP same-origin-allow-popups with redirects in a
+  newly opened popup.
+
+
+
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
diff --git a/testing/web-platform/tests/html/cross-origin-opener-policy/popup-same-origin-allow-popups-with-cross-origin.https.html b/testing/web-platform/tests/html/cross-origin-opener-policy/popup-same-origin-allow-popups-with-cross-origin.https.html
new file mode 100644
index 0000000000..d025faeb67
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-opener-policy/popup-same-origin-allow-popups-with-cross-origin.https.html
@@ -0,0 +1,58 @@
+
+
+
+
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/cross-origin-opener-policy/popup-same-origin-allow-popups-with-cross-origin.https.html.headers b/testing/web-platform/tests/html/cross-origin-opener-policy/popup-same-origin-allow-popups-with-cross-origin.https.html.headers
new file mode 100644
index 0000000000..d83ed86fb9
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-opener-policy/popup-same-origin-allow-popups-with-cross-origin.https.html.headers
@@ -0,0 +1 @@
+Cross-Origin-Opener-Policy: same-origin-allow-popups
diff --git a/testing/web-platform/tests/html/cross-origin-opener-policy/popup-same-origin-allow-popups-with-same-origin.https.html b/testing/web-platform/tests/html/cross-origin-opener-policy/popup-same-origin-allow-popups-with-same-origin.https.html
new file mode 100644
index 0000000000..438e424284
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-opener-policy/popup-same-origin-allow-popups-with-same-origin.https.html
@@ -0,0 +1,58 @@
+
+
+
+
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/cross-origin-opener-policy/popup-same-origin-allow-popups-with-same-origin.https.html.headers b/testing/web-platform/tests/html/cross-origin-opener-policy/popup-same-origin-allow-popups-with-same-origin.https.html.headers
new file mode 100644
index 0000000000..d83ed86fb9
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-opener-policy/popup-same-origin-allow-popups-with-same-origin.https.html.headers
@@ -0,0 +1 @@
+Cross-Origin-Opener-Policy: same-origin-allow-popups
diff --git a/testing/web-platform/tests/html/cross-origin-opener-policy/popup-same-origin-allow-popups-with-same-site.https.html b/testing/web-platform/tests/html/cross-origin-opener-policy/popup-same-origin-allow-popups-with-same-site.https.html
new file mode 100644
index 0000000000..d1b6b60d7c
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-opener-policy/popup-same-origin-allow-popups-with-same-site.https.html
@@ -0,0 +1,58 @@
+
+
+
+
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/cross-origin-opener-policy/popup-same-origin-allow-popups-with-same-site.https.html.headers b/testing/web-platform/tests/html/cross-origin-opener-policy/popup-same-origin-allow-popups-with-same-site.https.html.headers
new file mode 100644
index 0000000000..d83ed86fb9
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-opener-policy/popup-same-origin-allow-popups-with-same-site.https.html.headers
@@ -0,0 +1 @@
+Cross-Origin-Opener-Policy: same-origin-allow-popups
diff --git a/testing/web-platform/tests/html/cross-origin-opener-policy/popup-same-origin-non-initial-about-blank.https.html b/testing/web-platform/tests/html/cross-origin-opener-policy/popup-same-origin-non-initial-about-blank.https.html
new file mode 100644
index 0000000000..2e58ea4553
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-opener-policy/popup-same-origin-non-initial-about-blank.https.html
@@ -0,0 +1,17 @@
+
+Cross-Origin-Opener-Policy: about:blank
+
+
+
diff --git a/testing/web-platform/tests/html/cross-origin-opener-policy/popup-same-origin-non-initial-about-blank.https.html.headers b/testing/web-platform/tests/html/cross-origin-opener-policy/popup-same-origin-non-initial-about-blank.https.html.headers
new file mode 100644
index 0000000000..46ad58d83b
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-opener-policy/popup-same-origin-non-initial-about-blank.https.html.headers
@@ -0,0 +1 @@
+Cross-Origin-Opener-Policy: same-origin
diff --git a/testing/web-platform/tests/html/cross-origin-opener-policy/popup-same-origin-with-cross-origin.https.html b/testing/web-platform/tests/html/cross-origin-opener-policy/popup-same-origin-with-cross-origin.https.html
new file mode 100644
index 0000000000..bd1e6848c4
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-opener-policy/popup-same-origin-with-cross-origin.https.html
@@ -0,0 +1,58 @@
+
+
+
+
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/cross-origin-opener-policy/popup-same-origin-with-cross-origin.https.html.headers b/testing/web-platform/tests/html/cross-origin-opener-policy/popup-same-origin-with-cross-origin.https.html.headers
new file mode 100644
index 0000000000..46ad58d83b
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-opener-policy/popup-same-origin-with-cross-origin.https.html.headers
@@ -0,0 +1 @@
+Cross-Origin-Opener-Policy: same-origin
diff --git a/testing/web-platform/tests/html/cross-origin-opener-policy/popup-same-origin-with-same-origin.https.html b/testing/web-platform/tests/html/cross-origin-opener-policy/popup-same-origin-with-same-origin.https.html
new file mode 100644
index 0000000000..caf4b173c2
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-opener-policy/popup-same-origin-with-same-origin.https.html
@@ -0,0 +1,58 @@
+
+
+
+
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/cross-origin-opener-policy/popup-same-origin-with-same-origin.https.html.headers b/testing/web-platform/tests/html/cross-origin-opener-policy/popup-same-origin-with-same-origin.https.html.headers
new file mode 100644
index 0000000000..46ad58d83b
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-opener-policy/popup-same-origin-with-same-origin.https.html.headers
@@ -0,0 +1 @@
+Cross-Origin-Opener-Policy: same-origin
diff --git a/testing/web-platform/tests/html/cross-origin-opener-policy/popup-same-origin-with-same-site.https.html b/testing/web-platform/tests/html/cross-origin-opener-policy/popup-same-origin-with-same-site.https.html
new file mode 100644
index 0000000000..93ba9c9888
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-opener-policy/popup-same-origin-with-same-site.https.html
@@ -0,0 +1,58 @@
+
+
+
+
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/cross-origin-opener-policy/popup-same-origin-with-same-site.https.html.headers b/testing/web-platform/tests/html/cross-origin-opener-policy/popup-same-origin-with-same-site.https.html.headers
new file mode 100644
index 0000000000..46ad58d83b
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-opener-policy/popup-same-origin-with-same-site.https.html.headers
@@ -0,0 +1 @@
+Cross-Origin-Opener-Policy: same-origin
diff --git a/testing/web-platform/tests/html/cross-origin-opener-policy/popup-unsafe-none-with-cross-origin.https.html b/testing/web-platform/tests/html/cross-origin-opener-policy/popup-unsafe-none-with-cross-origin.https.html
new file mode 100644
index 0000000000..31ac569491
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-opener-policy/popup-unsafe-none-with-cross-origin.https.html
@@ -0,0 +1,58 @@
+
+
+
+
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/cross-origin-opener-policy/popup-unsafe-none-with-cross-origin.https.html.headers b/testing/web-platform/tests/html/cross-origin-opener-policy/popup-unsafe-none-with-cross-origin.https.html.headers
new file mode 100644
index 0000000000..073ce7adfb
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-opener-policy/popup-unsafe-none-with-cross-origin.https.html.headers
@@ -0,0 +1 @@
+Cross-Origin-Opener-Policy: unsafe-none
diff --git a/testing/web-platform/tests/html/cross-origin-opener-policy/popup-unsafe-none-with-same-origin.https.html b/testing/web-platform/tests/html/cross-origin-opener-policy/popup-unsafe-none-with-same-origin.https.html
new file mode 100644
index 0000000000..18f87048c3
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-opener-policy/popup-unsafe-none-with-same-origin.https.html
@@ -0,0 +1,58 @@
+
+
+
+
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/cross-origin-opener-policy/popup-unsafe-none-with-same-origin.https.html.headers b/testing/web-platform/tests/html/cross-origin-opener-policy/popup-unsafe-none-with-same-origin.https.html.headers
new file mode 100644
index 0000000000..073ce7adfb
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-opener-policy/popup-unsafe-none-with-same-origin.https.html.headers
@@ -0,0 +1 @@
+Cross-Origin-Opener-Policy: unsafe-none
diff --git a/testing/web-platform/tests/html/cross-origin-opener-policy/popup-unsafe-none-with-same-site.https.html b/testing/web-platform/tests/html/cross-origin-opener-policy/popup-unsafe-none-with-same-site.https.html
new file mode 100644
index 0000000000..d1b6b60d7c
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-opener-policy/popup-unsafe-none-with-same-site.https.html
@@ -0,0 +1,58 @@
+
+
+
+
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/cross-origin-opener-policy/popup-unsafe-none-with-same-site.https.html.headers b/testing/web-platform/tests/html/cross-origin-opener-policy/popup-unsafe-none-with-same-site.https.html.headers
new file mode 100644
index 0000000000..073ce7adfb
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-opener-policy/popup-unsafe-none-with-same-site.https.html.headers
@@ -0,0 +1 @@
+Cross-Origin-Opener-Policy: unsafe-none
diff --git a/testing/web-platform/tests/html/cross-origin-opener-policy/popup-unspecified-with-cross-origin.https.html b/testing/web-platform/tests/html/cross-origin-opener-policy/popup-unspecified-with-cross-origin.https.html
new file mode 100644
index 0000000000..31ac569491
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-opener-policy/popup-unspecified-with-cross-origin.https.html
@@ -0,0 +1,58 @@
+
+
+
+
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/cross-origin-opener-policy/popup-unspecified-with-same-origin.https.html b/testing/web-platform/tests/html/cross-origin-opener-policy/popup-unspecified-with-same-origin.https.html
new file mode 100644
index 0000000000..18f87048c3
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-opener-policy/popup-unspecified-with-same-origin.https.html
@@ -0,0 +1,58 @@
+
+
+
+
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/cross-origin-opener-policy/popup-unspecified-with-same-site.https.html b/testing/web-platform/tests/html/cross-origin-opener-policy/popup-unspecified-with-same-site.https.html
new file mode 100644
index 0000000000..d1b6b60d7c
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-opener-policy/popup-unspecified-with-same-site.https.html
@@ -0,0 +1,58 @@
+
+
+
+
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/cross-origin-opener-policy/popup-with-structured-header.https.html b/testing/web-platform/tests/html/cross-origin-opener-policy/popup-with-structured-header.https.html
new file mode 100644
index 0000000000..e337e69cc0
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-opener-policy/popup-with-structured-header.https.html
@@ -0,0 +1,33 @@
+
+
+
+
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/cross-origin-opener-policy/popup-with-structured-header.https.html.headers b/testing/web-platform/tests/html/cross-origin-opener-policy/popup-with-structured-header.https.html.headers
new file mode 100644
index 0000000000..46ad58d83b
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-opener-policy/popup-with-structured-header.https.html.headers
@@ -0,0 +1 @@
+Cross-Origin-Opener-Policy: same-origin
diff --git a/testing/web-platform/tests/html/cross-origin-opener-policy/reporting/META.yml b/testing/web-platform/tests/html/cross-origin-opener-policy/reporting/META.yml
new file mode 100644
index 0000000000..0db28208a6
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-opener-policy/reporting/META.yml
@@ -0,0 +1,6 @@
+suggested_reviewers:
+  - ArthurSonzogni
+  - ParisMeuleman
+  - camillelamy
+  - hemeryar
+  - mikewest
diff --git a/testing/web-platform/tests/html/cross-origin-opener-policy/reporting/access-reporting/access-from-coop-page-to-openee_coop-ro.https.html b/testing/web-platform/tests/html/cross-origin-opener-policy/reporting/access-reporting/access-from-coop-page-to-openee_coop-ro.https.html
new file mode 100644
index 0000000000..a7e83cc0d9
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-opener-policy/reporting/access-reporting/access-from-coop-page-to-openee_coop-ro.https.html
@@ -0,0 +1,82 @@
+
+  COOP reports are to the opener when the opener used COOP-RO+COEP and then it
+  tries to access a same-origin openee.
+
+
+
+
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/cross-origin-opener-policy/reporting/access-reporting/access-from-coop-page-to-openee_coop-ro_cross-origin.https.html b/testing/web-platform/tests/html/cross-origin-opener-policy/reporting/access-reporting/access-from-coop-page-to-openee_coop-ro_cross-origin.https.html
new file mode 100644
index 0000000000..fe72a2299f
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-opener-policy/reporting/access-reporting/access-from-coop-page-to-openee_coop-ro_cross-origin.https.html
@@ -0,0 +1,85 @@
+
+  COOP reports are to the opener when the opener used COOP-RO+COEP and then it
+  tries to access a cross-origin openee.
+
+
+
+
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/cross-origin-opener-policy/reporting/access-reporting/access-from-coop-page-to-opener_coop-ro.https.html b/testing/web-platform/tests/html/cross-origin-opener-policy/reporting/access-reporting/access-from-coop-page-to-opener_coop-ro.https.html
new file mode 100644
index 0000000000..005339a06e
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-opener-policy/reporting/access-reporting/access-from-coop-page-to-opener_coop-ro.https.html
@@ -0,0 +1,63 @@
+
+  COOP reports are sent when the openee used COOP-RO+COEP and then tries to
+  access its same-origin opener.
+
+
+
+
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/cross-origin-opener-policy/reporting/access-reporting/access-from-coop-page-to-opener_coop-ro_cross-origin.https.html b/testing/web-platform/tests/html/cross-origin-opener-policy/reporting/access-reporting/access-from-coop-page-to-opener_coop-ro_cross-origin.https.html
new file mode 100644
index 0000000000..eedfaa557f
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-opener-policy/reporting/access-reporting/access-from-coop-page-to-opener_coop-ro_cross-origin.https.html
@@ -0,0 +1,63 @@
+
+  COOP reports are sent when the openee used COOP-RO+COEP and then tries to
+  access its cross-origin opener.
+
+
+
+
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/cross-origin-opener-policy/reporting/access-reporting/access-from-coop-page-to-other_coop-ro.https.html b/testing/web-platform/tests/html/cross-origin-opener-policy/reporting/access-reporting/access-from-coop-page-to-other_coop-ro.https.html
new file mode 100644
index 0000000000..90df0e4e99
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-opener-policy/reporting/access-reporting/access-from-coop-page-to-other_coop-ro.https.html
@@ -0,0 +1,92 @@
+
+  One window accesses a second one. They are aren't related by an opener/openee
+  relationship. The first window has set
+  Cross-Origin-Opener-Policy-Report-Only:same-origin, so it receives a
+  "access-from-coop-page-to-other" report.
+
+
+
+
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/cross-origin-opener-policy/reporting/access-reporting/access-from-coop-page-to-other_coop-ro_cross-origin.https.html b/testing/web-platform/tests/html/cross-origin-opener-policy/reporting/access-reporting/access-from-coop-page-to-other_coop-ro_cross-origin.https.html
new file mode 100644
index 0000000000..f0d60c2531
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-opener-policy/reporting/access-reporting/access-from-coop-page-to-other_coop-ro_cross-origin.https.html
@@ -0,0 +1,93 @@
+
+  One window accesses a second one. They are aren't related by an opener/openee
+  relationship. The first window has set
+  Cross-Origin-Opener-Policy-Report-Only:same-origin, so it receives a
+  "access-from-coop-page-to-other" report.
+
+
+
+
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/cross-origin-opener-policy/reporting/access-reporting/access-to-coop-page-from-openee_coop-ro.https.html b/testing/web-platform/tests/html/cross-origin-opener-policy/reporting/access-reporting/access-to-coop-page-from-openee_coop-ro.https.html
new file mode 100644
index 0000000000..9f0a8821a4
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-opener-policy/reporting/access-reporting/access-to-coop-page-from-openee_coop-ro.https.html
@@ -0,0 +1,77 @@
+
+  COOP reports are to the opener when the opener used COOP-RO+COEP and then its
+  same-origin openee tries to access it.
+
+
+
+
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/cross-origin-opener-policy/reporting/access-reporting/access-to-coop-page-from-openee_coop-ro_cross-origin.https.html b/testing/web-platform/tests/html/cross-origin-opener-policy/reporting/access-reporting/access-to-coop-page-from-openee_coop-ro_cross-origin.https.html
new file mode 100644
index 0000000000..d9577836d9
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-opener-policy/reporting/access-reporting/access-to-coop-page-from-openee_coop-ro_cross-origin.https.html
@@ -0,0 +1,79 @@
+
+  COOP reports are to the opener when the opener used COOP-RO+COEP and then its
+  cross-origin openee tries to access it.
+
+
+
+
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/cross-origin-opener-policy/reporting/access-reporting/access-to-coop-page-from-opener_coop-ro.https.html b/testing/web-platform/tests/html/cross-origin-opener-policy/reporting/access-reporting/access-to-coop-page-from-opener_coop-ro.https.html
new file mode 100644
index 0000000000..8a643d762c
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-opener-policy/reporting/access-reporting/access-to-coop-page-from-opener_coop-ro.https.html
@@ -0,0 +1,67 @@
+
+  COOP reports are sent when the openee used COOP-RO+COEP and then its
+  same-origin opener tries to access it.
+
+
+
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/cross-origin-opener-policy/reporting/access-reporting/access-to-coop-page-from-opener_coop-ro_cross-origin.https.html b/testing/web-platform/tests/html/cross-origin-opener-policy/reporting/access-reporting/access-to-coop-page-from-opener_coop-ro_cross-origin.https.html
new file mode 100644
index 0000000000..7e1ae870a7
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-opener-policy/reporting/access-reporting/access-to-coop-page-from-opener_coop-ro_cross-origin.https.html
@@ -0,0 +1,68 @@
+
+  COOP reports are sent when the openee used COOP-RO+COEP and then its
+  cross-origin opener tries to access it.
+
+
+
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/cross-origin-opener-policy/reporting/access-reporting/access-to-coop-page-from-other_coop-ro.https.html b/testing/web-platform/tests/html/cross-origin-opener-policy/reporting/access-reporting/access-to-coop-page-from-other_coop-ro.https.html
new file mode 100644
index 0000000000..b73bab8610
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-opener-policy/reporting/access-reporting/access-to-coop-page-from-other_coop-ro.https.html
@@ -0,0 +1,82 @@
+
+  One window accesses a second one. They are aren't related by an opener/openee
+  relationship. The second window has set
+  Cross-Origin-Opener-Policy-Report-Only:same-origin, so it receives a
+  "access-to-coop-page-from-other" report.
+
+
+
+
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/cross-origin-opener-policy/reporting/access-reporting/access-to-coop-page-from-other_coop-ro_cross-origin.https.html b/testing/web-platform/tests/html/cross-origin-opener-policy/reporting/access-reporting/access-to-coop-page-from-other_coop-ro_cross-origin.https.html
new file mode 100644
index 0000000000..c86daa3dca
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-opener-policy/reporting/access-reporting/access-to-coop-page-from-other_coop-ro_cross-origin.https.html
@@ -0,0 +1,83 @@
+
+  One window accesses a second one. They are aren't related by an opener/openee
+  relationship. The second window has set
+  Cross-Origin-Opener-Policy-Report-Only:same-origin, so it receives a
+  "access-to-coop-page-from-other" report.
+
+
+
+
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/cross-origin-opener-policy/reporting/access-reporting/property-blur.https.html b/testing/web-platform/tests/html/cross-origin-opener-policy/reporting/access-reporting/property-blur.https.html
new file mode 100644
index 0000000000..849bf6579a
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-opener-policy/reporting/access-reporting/property-blur.https.html
@@ -0,0 +1,13 @@
+ Check openee.blur() access is checked
+
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/cross-origin-opener-policy/reporting/access-reporting/property-close.https.html b/testing/web-platform/tests/html/cross-origin-opener-policy/reporting/access-reporting/property-close.https.html
new file mode 100644
index 0000000000..7696600488
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-opener-policy/reporting/access-reporting/property-close.https.html
@@ -0,0 +1,13 @@
+ Check openee.close() access is checked
+
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/cross-origin-opener-policy/reporting/access-reporting/property-closed.https.html b/testing/web-platform/tests/html/cross-origin-opener-policy/reporting/access-reporting/property-closed.https.html
new file mode 100644
index 0000000000..c678d18a80
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-opener-policy/reporting/access-reporting/property-closed.https.html
@@ -0,0 +1,13 @@
+ Check openee.closed access is checked
+
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/cross-origin-opener-policy/reporting/access-reporting/property-focus.https.html b/testing/web-platform/tests/html/cross-origin-opener-policy/reporting/access-reporting/property-focus.https.html
new file mode 100644
index 0000000000..363c0d294f
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-opener-policy/reporting/access-reporting/property-focus.https.html
@@ -0,0 +1,13 @@
+ Check openee.focus() access is checked
+
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/cross-origin-opener-policy/reporting/access-reporting/property-frames.https.html b/testing/web-platform/tests/html/cross-origin-opener-policy/reporting/access-reporting/property-frames.https.html
new file mode 100644
index 0000000000..fc1925045f
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-opener-policy/reporting/access-reporting/property-frames.https.html
@@ -0,0 +1,13 @@
+ Check openee.frames access is checked
+
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/cross-origin-opener-policy/reporting/access-reporting/property-indexed-getter.https.html b/testing/web-platform/tests/html/cross-origin-opener-policy/reporting/access-reporting/property-indexed-getter.https.html
new file mode 100644
index 0000000000..b6c5f5acb1
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-opener-policy/reporting/access-reporting/property-indexed-getter.https.html
@@ -0,0 +1,66 @@
+ Check reports are sent for the indexed getter
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/cross-origin-opener-policy/reporting/access-reporting/property-indexed-getter.https.html.headers b/testing/web-platform/tests/html/cross-origin-opener-policy/reporting/access-reporting/property-indexed-getter.https.html.headers
new file mode 100644
index 0000000000..64f4d5fedf
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-opener-policy/reporting/access-reporting/property-indexed-getter.https.html.headers
@@ -0,0 +1 @@
+Cross-Origin-Opener-Policy-Report-Only: same-origin; report-to="none"
diff --git a/testing/web-platform/tests/html/cross-origin-opener-policy/reporting/access-reporting/property-length.https.html b/testing/web-platform/tests/html/cross-origin-opener-policy/reporting/access-reporting/property-length.https.html
new file mode 100644
index 0000000000..a9f3614cb5
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-opener-policy/reporting/access-reporting/property-length.https.html
@@ -0,0 +1,13 @@
+ Check openee.length access is checked
+
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/cross-origin-opener-policy/reporting/access-reporting/property-location-get.https.html b/testing/web-platform/tests/html/cross-origin-opener-policy/reporting/access-reporting/property-location-get.https.html
new file mode 100644
index 0000000000..442817748d
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-opener-policy/reporting/access-reporting/property-location-get.https.html
@@ -0,0 +1,13 @@
+ Check openee.location access is checked
+
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/cross-origin-opener-policy/reporting/access-reporting/property-location-set.https.html b/testing/web-platform/tests/html/cross-origin-opener-policy/reporting/access-reporting/property-location-set.https.html
new file mode 100644
index 0000000000..e42f084821
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-opener-policy/reporting/access-reporting/property-location-set.https.html
@@ -0,0 +1,13 @@
+ Check openee.location access is checked
+
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/cross-origin-opener-policy/reporting/access-reporting/property-named-getter.https.html b/testing/web-platform/tests/html/cross-origin-opener-policy/reporting/access-reporting/property-named-getter.https.html
new file mode 100644
index 0000000000..27be9a48d1
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-opener-policy/reporting/access-reporting/property-named-getter.https.html
@@ -0,0 +1,71 @@
+ Check reports are sent for the indexed getter
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/cross-origin-opener-policy/reporting/access-reporting/property-named-getter.https.html.headers b/testing/web-platform/tests/html/cross-origin-opener-policy/reporting/access-reporting/property-named-getter.https.html.headers
new file mode 100644
index 0000000000..64f4d5fedf
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-opener-policy/reporting/access-reporting/property-named-getter.https.html.headers
@@ -0,0 +1 @@
+Cross-Origin-Opener-Policy-Report-Only: same-origin; report-to="none"
diff --git a/testing/web-platform/tests/html/cross-origin-opener-policy/reporting/access-reporting/property-opener-get.https.html b/testing/web-platform/tests/html/cross-origin-opener-policy/reporting/access-reporting/property-opener-get.https.html
new file mode 100644
index 0000000000..b99dfdc562
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-opener-policy/reporting/access-reporting/property-opener-get.https.html
@@ -0,0 +1,13 @@
+ Check openee.opener access is checked
+
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/cross-origin-opener-policy/reporting/access-reporting/property-opener-set.https.html b/testing/web-platform/tests/html/cross-origin-opener-policy/reporting/access-reporting/property-opener-set.https.html
new file mode 100644
index 0000000000..10c251140b
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-opener-policy/reporting/access-reporting/property-opener-set.https.html
@@ -0,0 +1,13 @@
+ Check openee.opener access is checked
+
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/cross-origin-opener-policy/reporting/access-reporting/property-postmessage-1.https.html b/testing/web-platform/tests/html/cross-origin-opener-policy/reporting/access-reporting/property-postmessage-1.https.html
new file mode 100644
index 0000000000..a9168fdaa5
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-opener-policy/reporting/access-reporting/property-postmessage-1.https.html
@@ -0,0 +1,13 @@
+ Check openee.postMessage(arg1, arg2) access is checked
+
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/cross-origin-opener-policy/reporting/access-reporting/property-postmessage-2.https.html b/testing/web-platform/tests/html/cross-origin-opener-policy/reporting/access-reporting/property-postmessage-2.https.html
new file mode 100644
index 0000000000..4341f245d5
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-opener-policy/reporting/access-reporting/property-postmessage-2.https.html
@@ -0,0 +1,13 @@
+ Check openee.postMessage(arg1) access is checked
+
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/cross-origin-opener-policy/reporting/access-reporting/property-self.https.html b/testing/web-platform/tests/html/cross-origin-opener-policy/reporting/access-reporting/property-self.https.html
new file mode 100644
index 0000000000..7a7d5a3fec
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-opener-policy/reporting/access-reporting/property-self.https.html
@@ -0,0 +1,13 @@
+ Check openee.self access is checked
+
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/cross-origin-opener-policy/reporting/access-reporting/property-top.https.html b/testing/web-platform/tests/html/cross-origin-opener-policy/reporting/access-reporting/property-top.https.html
new file mode 100644
index 0000000000..1b75ecc105
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-opener-policy/reporting/access-reporting/property-top.https.html
@@ -0,0 +1,13 @@
+ Check openee.top access is checked
+
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/cross-origin-opener-policy/reporting/access-reporting/property-window.https.html b/testing/web-platform/tests/html/cross-origin-opener-policy/reporting/access-reporting/property-window.https.html
new file mode 100644
index 0000000000..07278b4a11
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-opener-policy/reporting/access-reporting/property-window.https.html
@@ -0,0 +1,13 @@
+ Check openee.window access is checked
+
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/cross-origin-opener-policy/reporting/access-reporting/report-to-both_coop-ro.https.html b/testing/web-platform/tests/html/cross-origin-opener-policy/reporting/access-reporting/report-to-both_coop-ro.https.html
new file mode 100644
index 0000000000..46cdc6eb27
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-opener-policy/reporting/access-reporting/report-to-both_coop-ro.https.html
@@ -0,0 +1,124 @@
+
+  Both the openee and the opener have a COOP reporter. The report are sent to
+  both side.
+
+
+
+
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/cross-origin-opener-policy/reporting/access-reporting/reporting-observer.html b/testing/web-platform/tests/html/cross-origin-opener-policy/reporting/access-reporting/reporting-observer.html
new file mode 100644
index 0000000000..375c627d27
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-opener-policy/reporting/access-reporting/reporting-observer.html
@@ -0,0 +1,275 @@
+
+
+
+
+  Check the ReportingObserver(s) are notified about the coop-access-violation
+  events.
+
+
+
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/cross-origin-opener-policy/reporting/document-reporting/report-only-four-reports.https.html b/testing/web-platform/tests/html/cross-origin-opener-policy/reporting/document-reporting/report-only-four-reports.https.html
new file mode 100644
index 0000000000..7bfdab1330
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-opener-policy/reporting/document-reporting/report-only-four-reports.https.html
@@ -0,0 +1,86 @@
+
+
+A test with both COOP and COOP report only setup using Reporting-Endpoints header
+
+
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/cross-origin-opener-policy/reporting/document-reporting/report-only-four-reports.https.html.sub.headers b/testing/web-platform/tests/html/cross-origin-opener-policy/reporting/document-reporting/report-only-four-reports.https.html.sub.headers
new file mode 100644
index 0000000000..de48445f38
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-opener-policy/reporting/document-reporting/report-only-four-reports.https.html.sub.headers
@@ -0,0 +1,6 @@
+Cross-Origin-Opener-Policy: same-origin-allow-popups; report-to="coop-report-endpoint"
+Cross-Origin-Opener-Policy-Report-Only: same-origin; report-to="coop-report-only-endpoint"
+Cross-Origin-Embedder-Policy: require-corp
+Cross-Origin-Embedder-Policy-Report-Only: require-corp
+Referrer-Policy: origin
+Reporting-Endpoints: coop-report-endpoint="https://{{host}}:{{ports[https][0]}}/reporting/resources/report.py?reportID=2aee31d2-cd11-43bd-b34d-5f081ca3b2b4", coop-report-only-endpoint="https://{{host}}:{{ports[https][0]}}/reporting/resources/report.py?reportID=d18f1779-e2ab-4a7a-8b1c-44e3a6f440f5"
diff --git a/testing/web-platform/tests/html/cross-origin-opener-policy/reporting/document-reporting/report-to-both_coop-ro.https.html b/testing/web-platform/tests/html/cross-origin-opener-policy/reporting/document-reporting/report-to-both_coop-ro.https.html
new file mode 100644
index 0000000000..409628c15c
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-opener-policy/reporting/document-reporting/report-to-both_coop-ro.https.html
@@ -0,0 +1,124 @@
+
+  Both the openee and the opener have a COOP reporter. The report are sent to
+  both side.
+
+
+
+
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/cross-origin-opener-policy/reporting/document-reporting/reporting-redirect-with-same-origin-allow-popups.https.html b/testing/web-platform/tests/html/cross-origin-opener-policy/reporting/document-reporting/reporting-redirect-with-same-origin-allow-popups.https.html
new file mode 100644
index 0000000000..b2ff818d56
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-opener-policy/reporting/document-reporting/reporting-redirect-with-same-origin-allow-popups.https.html
@@ -0,0 +1,111 @@
+
+  Tests the redirect interaction with COOP same-origin-allow-popups.
+
+
+
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/cross-origin-opener-policy/reporting/document-reporting/reporting-redirect-with-unsafe-none.https.html b/testing/web-platform/tests/html/cross-origin-opener-policy/reporting/document-reporting/reporting-redirect-with-unsafe-none.https.html
new file mode 100644
index 0000000000..bd89856305
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-opener-policy/reporting/document-reporting/reporting-redirect-with-unsafe-none.https.html
@@ -0,0 +1,130 @@
+
+  Tests the redirect interaction with COOP unsafe-none.
+
+
+
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/cross-origin-opener-policy/reporting/navigation-reporting/report-only-four-reports.https.html b/testing/web-platform/tests/html/cross-origin-opener-policy/reporting/navigation-reporting/report-only-four-reports.https.html
new file mode 100644
index 0000000000..ca1471ccc0
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-opener-policy/reporting/navigation-reporting/report-only-four-reports.https.html
@@ -0,0 +1,86 @@
+
+A test with both COOP and COOP report only setup
+
+
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/cross-origin-opener-policy/reporting/navigation-reporting/report-only-four-reports.https.html.sub.headers b/testing/web-platform/tests/html/cross-origin-opener-policy/reporting/navigation-reporting/report-only-four-reports.https.html.sub.headers
new file mode 100644
index 0000000000..50c3045bb6
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-opener-policy/reporting/navigation-reporting/report-only-four-reports.https.html.sub.headers
@@ -0,0 +1,6 @@
+Cross-Origin-Opener-Policy: same-origin-allow-popups; report-to="coop-report-endpoint"
+Cross-Origin-Opener-Policy-Report-Only: same-origin; report-to="coop-report-only-endpoint"
+Cross-Origin-Embedder-Policy: require-corp
+Cross-Origin-Embedder-Policy-Report-Only: require-corp
+Referrer-Policy: origin
+Reporting-Endpoints: coop-report-endpoint="https://{{host}}:{{ports[https][0]}}/reporting/resources/report.py?reportID=47b45e17-51c5-4691-bdd5-8f343bbfcf42", coop-report-only-endpoint="https://{{host}}:{{ports[https][0]}}/reporting/resources/report.py?reportID=3eb3ad1d-872e-4ea8-8b40-0e98783a0683"
\ No newline at end of file
diff --git a/testing/web-platform/tests/html/cross-origin-opener-policy/reporting/navigation-reporting/report-only-from-unsafe-none.https.html b/testing/web-platform/tests/html/cross-origin-opener-policy/reporting/navigation-reporting/report-only-from-unsafe-none.https.html
new file mode 100644
index 0000000000..cca2e7e1ae
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-opener-policy/reporting/navigation-reporting/report-only-from-unsafe-none.https.html
@@ -0,0 +1,71 @@
+
+
+Report only tests for an opener without any COOP/COOP report only set
+
+
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/cross-origin-opener-policy/reporting/navigation-reporting/report-only-from-unsafe-none.https.html.headers b/testing/web-platform/tests/html/cross-origin-opener-policy/reporting/navigation-reporting/report-only-from-unsafe-none.https.html.headers
new file mode 100644
index 0000000000..5b29739bbd
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-opener-policy/reporting/navigation-reporting/report-only-from-unsafe-none.https.html.headers
@@ -0,0 +1 @@
+Referrer-Policy: origin
diff --git a/testing/web-platform/tests/html/cross-origin-opener-policy/reporting/navigation-reporting/report-only-same-origin-report-to.https.html b/testing/web-platform/tests/html/cross-origin-opener-policy/reporting/navigation-reporting/report-only-same-origin-report-to.https.html
new file mode 100644
index 0000000000..52b1f2a09f
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-opener-policy/reporting/navigation-reporting/report-only-same-origin-report-to.https.html
@@ -0,0 +1,96 @@
+
+reporting same origin with report-to
+
+
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/cross-origin-opener-policy/reporting/navigation-reporting/report-only-same-origin-report-to.https.html.sub.headers b/testing/web-platform/tests/html/cross-origin-opener-policy/reporting/navigation-reporting/report-only-same-origin-report-to.https.html.sub.headers
new file mode 100644
index 0000000000..04bc49906b
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-opener-policy/reporting/navigation-reporting/report-only-same-origin-report-to.https.html.sub.headers
@@ -0,0 +1,3 @@
+Cross-Origin-Opener-Policy-Report-Only: same-origin; report-to="coop-report-only-endpoint"
+Referrer-Policy: origin
+Reporting-Endpoints: coop-report-endpoint="https://{{host}}:{{ports[https][0]}}/reporting/resources/report.py?reportID=380ca360-d1ae-4329-b1dd-69cea49cd705", coop-report-only-endpoint="https://{{host}}:{{ports[https][0]}}/reporting/resources/report.py?reportID=cf9ac91d-6c5d-4489-a420-10be9402ef84"
diff --git a/testing/web-platform/tests/html/cross-origin-opener-policy/reporting/navigation-reporting/report-only-same-origin-with-coep-report-only.https.html b/testing/web-platform/tests/html/cross-origin-opener-policy/reporting/navigation-reporting/report-only-same-origin-with-coep-report-only.https.html
new file mode 100644
index 0000000000..148c700ee5
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-opener-policy/reporting/navigation-reporting/report-only-same-origin-with-coep-report-only.https.html
@@ -0,0 +1,32 @@
+
+
+reporting same origin with report-to
+
+
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/cross-origin-opener-policy/reporting/navigation-reporting/report-only-same-origin-with-coep-report-only.https.html.headers b/testing/web-platform/tests/html/cross-origin-opener-policy/reporting/navigation-reporting/report-only-same-origin-with-coep-report-only.https.html.headers
new file mode 100644
index 0000000000..58ab03394a
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-opener-policy/reporting/navigation-reporting/report-only-same-origin-with-coep-report-only.https.html.headers
@@ -0,0 +1,3 @@
+Cross-Origin-Opener-Policy-Report-Only: same-origin
+Cross-Origin-Embedder-Policy-Report-Only: require-corp
+Referrer-Policy: origin
diff --git a/testing/web-platform/tests/html/cross-origin-opener-policy/reporting/navigation-reporting/report-only-same-origin-with-coep.https.html b/testing/web-platform/tests/html/cross-origin-opener-policy/reporting/navigation-reporting/report-only-same-origin-with-coep.https.html
new file mode 100644
index 0000000000..148c700ee5
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-opener-policy/reporting/navigation-reporting/report-only-same-origin-with-coep.https.html
@@ -0,0 +1,32 @@
+
+
+reporting same origin with report-to
+
+
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/cross-origin-opener-policy/reporting/navigation-reporting/report-only-same-origin-with-coep.https.html.headers b/testing/web-platform/tests/html/cross-origin-opener-policy/reporting/navigation-reporting/report-only-same-origin-with-coep.https.html.headers
new file mode 100644
index 0000000000..2ba7ffb592
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-opener-policy/reporting/navigation-reporting/report-only-same-origin-with-coep.https.html.headers
@@ -0,0 +1,3 @@
+Cross-Origin-Opener-Policy-Report-Only: same-origin
+Cross-Origin-Embedder-Policy: require-corp
+Referrer-Policy: origin
diff --git a/testing/web-platform/tests/html/cross-origin-opener-policy/reporting/navigation-reporting/report-only-same-origin.https.html b/testing/web-platform/tests/html/cross-origin-opener-policy/reporting/navigation-reporting/report-only-same-origin.https.html
new file mode 100644
index 0000000000..8a63682c69
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-opener-policy/reporting/navigation-reporting/report-only-same-origin.https.html
@@ -0,0 +1,73 @@
+
+
+reporting same origin with report-to
+
+
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/cross-origin-opener-policy/reporting/navigation-reporting/report-only-same-origin.https.html.headers b/testing/web-platform/tests/html/cross-origin-opener-policy/reporting/navigation-reporting/report-only-same-origin.https.html.headers
new file mode 100644
index 0000000000..9a8445a43e
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-opener-policy/reporting/navigation-reporting/report-only-same-origin.https.html.headers
@@ -0,0 +1,2 @@
+Cross-Origin-Opener-Policy-Report-Only: same-origin
+Referrer-Policy: origin
diff --git a/testing/web-platform/tests/html/cross-origin-opener-policy/reporting/navigation-reporting/reporting-coop-navigated-opener.https.html b/testing/web-platform/tests/html/cross-origin-opener-policy/reporting/navigation-reporting/reporting-coop-navigated-opener.https.html
new file mode 100644
index 0000000000..893dfa20b8
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-opener-policy/reporting/navigation-reporting/reporting-coop-navigated-opener.https.html
@@ -0,0 +1,67 @@
+
+  Reports a browsing context group switch when an opener with COOP navigates.
+
+
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/cross-origin-opener-policy/reporting/navigation-reporting/reporting-coop-navigated-popup.https.html b/testing/web-platform/tests/html/cross-origin-opener-policy/reporting/navigation-reporting/reporting-coop-navigated-popup.https.html
new file mode 100644
index 0000000000..b625b285cf
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-opener-policy/reporting/navigation-reporting/reporting-coop-navigated-popup.https.html
@@ -0,0 +1,85 @@
+Cross-Origin-Opener-Policy: a navigated popup with reporting
+
+
+ 
+
+
+
+
diff --git a/testing/web-platform/tests/html/cross-origin-opener-policy/reporting/navigation-reporting/reporting-coop-navigated-popup.https.html.sub.headers b/testing/web-platform/tests/html/cross-origin-opener-policy/reporting/navigation-reporting/reporting-coop-navigated-popup.https.html.sub.headers
new file mode 100644
index 0000000000..a6a27c2d3e
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-opener-policy/reporting/navigation-reporting/reporting-coop-navigated-popup.https.html.sub.headers
@@ -0,0 +1,2 @@
+Cross-Origin-Opener-Policy: same-origin-allow-popups; report-to="coop-report-endpoint"
+Reporting-Endpoints: coop-report-endpoint="https://{{host}}:{{ports[https][0]}}/reporting/resources/report.py?reportID=df3cde15-b00b-4a59-b6e2-498b67a6146e", coop-report-only-endpoint="https://{{host}}:{{ports[https][0]}}/reporting/resources/report.py?reportID=ebf3a415-7a74-42e1-92d1-e600b1bbe22e"
diff --git a/testing/web-platform/tests/html/cross-origin-opener-policy/reporting/navigation-reporting/reporting-popup-same-origin-allow-popups-report-to.https.html b/testing/web-platform/tests/html/cross-origin-opener-policy/reporting/navigation-reporting/reporting-popup-same-origin-allow-popups-report-to.https.html
new file mode 100644
index 0000000000..d674e2e449
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-opener-policy/reporting/navigation-reporting/reporting-popup-same-origin-allow-popups-report-to.https.html
@@ -0,0 +1,126 @@
+
+reporting same origin with report-to
+
+
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/cross-origin-opener-policy/reporting/navigation-reporting/reporting-popup-same-origin-allow-popups-report-to.https.html.sub.headers b/testing/web-platform/tests/html/cross-origin-opener-policy/reporting/navigation-reporting/reporting-popup-same-origin-allow-popups-report-to.https.html.sub.headers
new file mode 100644
index 0000000000..3e213a95a3
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-opener-policy/reporting/navigation-reporting/reporting-popup-same-origin-allow-popups-report-to.https.html.sub.headers
@@ -0,0 +1,3 @@
+Reporting-Endpoints: coop-report-endpoint="https://{{host}}:{{ports[https][0]}}/reporting/resources/report.py?reportID=6a739c25-0ec5-4832-b4a3-847281006857", coop-report-only-endpoint="https://{{host}}:{{ports[https][0]}}/reporting/resources/report.py?reportID=f91209ee-b3a3-474b-b337-d663533745fb"
+Cross-Origin-Opener-Policy: same-origin-allow-popups; report-to="coop-report-endpoint"
+Referrer-Policy: origin
diff --git a/testing/web-platform/tests/html/cross-origin-opener-policy/reporting/navigation-reporting/reporting-popup-same-origin-coep-report-to.https.html b/testing/web-platform/tests/html/cross-origin-opener-policy/reporting/navigation-reporting/reporting-popup-same-origin-coep-report-to.https.html
new file mode 100644
index 0000000000..88b180702f
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-opener-policy/reporting/navigation-reporting/reporting-popup-same-origin-coep-report-to.https.html
@@ -0,0 +1,173 @@
+
+reporting same origin with report-to
+
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/cross-origin-opener-policy/reporting/navigation-reporting/reporting-popup-same-origin-coep-report-to.https.html.sub.headers b/testing/web-platform/tests/html/cross-origin-opener-policy/reporting/navigation-reporting/reporting-popup-same-origin-coep-report-to.https.html.sub.headers
new file mode 100644
index 0000000000..0f78bdb2d0
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-opener-policy/reporting/navigation-reporting/reporting-popup-same-origin-coep-report-to.https.html.sub.headers
@@ -0,0 +1,4 @@
+Reporting-Endpoints: coop-report-endpoint="https://{{host}}:{{ports[https][0]}}/reporting/resources/report.py?reportID=edbbace3-40ca-4640-8d50-dc6e52acc1da", coop-report-only-endpoint="https://{{host}}:{{ports[https][0]}}/reporting/resources/report.py?reportID=f65cf51a-ca6f-4028-a2c3-0c06183faa13"
+Cross-Origin-Opener-Policy: same-origin; report-to="coop-report-endpoint"
+Cross-Origin-Embedder-Policy: require-corp
+Referrer-Policy: origin
diff --git a/testing/web-platform/tests/html/cross-origin-opener-policy/reporting/navigation-reporting/reporting-popup-same-origin-report-to.https.html b/testing/web-platform/tests/html/cross-origin-opener-policy/reporting/navigation-reporting/reporting-popup-same-origin-report-to.https.html
new file mode 100644
index 0000000000..47bb67cc4b
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-opener-policy/reporting/navigation-reporting/reporting-popup-same-origin-report-to.https.html
@@ -0,0 +1,216 @@
+
+reporting same origin with report-to
+
+
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/cross-origin-opener-policy/reporting/navigation-reporting/reporting-popup-same-origin-report-to.https.html.sub.headers b/testing/web-platform/tests/html/cross-origin-opener-policy/reporting/navigation-reporting/reporting-popup-same-origin-report-to.https.html.sub.headers
new file mode 100644
index 0000000000..79c851a86c
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-opener-policy/reporting/navigation-reporting/reporting-popup-same-origin-report-to.https.html.sub.headers
@@ -0,0 +1,3 @@
+Reporting-Endpoints: coop-report-endpoint="https://{{host}}:{{ports[https][0]}}/reporting/resources/report.py?reportID=6aad9729-8642-4894-91d9-a4d44707cd4a", coop-report-only-endpoint="https://{{host}}:{{ports[https][0]}}/reporting/resources/report.py?reportID=69eb1838-6a03-4cda-97b0-c126ffcb9e8a"
+Cross-Origin-Opener-Policy: same-origin; report-to="coop-report-endpoint"
+Referrer-Policy: no-referrer
diff --git a/testing/web-platform/tests/html/cross-origin-opener-policy/reporting/navigation-reporting/reporting-popup-same-origin.https.html b/testing/web-platform/tests/html/cross-origin-opener-policy/reporting/navigation-reporting/reporting-popup-same-origin.https.html
new file mode 100644
index 0000000000..3a8f343f37
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-opener-policy/reporting/navigation-reporting/reporting-popup-same-origin.https.html
@@ -0,0 +1,110 @@
+
+reporting same origin
+
+
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/cross-origin-opener-policy/reporting/navigation-reporting/reporting-popup-same-origin.https.html.headers b/testing/web-platform/tests/html/cross-origin-opener-policy/reporting/navigation-reporting/reporting-popup-same-origin.https.html.headers
new file mode 100644
index 0000000000..46ad58d83b
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-opener-policy/reporting/navigation-reporting/reporting-popup-same-origin.https.html.headers
@@ -0,0 +1 @@
+Cross-Origin-Opener-Policy: same-origin
diff --git a/testing/web-platform/tests/html/cross-origin-opener-policy/reporting/navigation-reporting/reporting-popup-unsafe-none-report-to.https.html b/testing/web-platform/tests/html/cross-origin-opener-policy/reporting/navigation-reporting/reporting-popup-unsafe-none-report-to.https.html
new file mode 100644
index 0000000000..2563dbb01f
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-opener-policy/reporting/navigation-reporting/reporting-popup-unsafe-none-report-to.https.html
@@ -0,0 +1,126 @@
+
+reporting same origin with report-to
+
+
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/cross-origin-opener-policy/reporting/navigation-reporting/reporting-popup-unsafe-none-report-to.https.html.sub.headers b/testing/web-platform/tests/html/cross-origin-opener-policy/reporting/navigation-reporting/reporting-popup-unsafe-none-report-to.https.html.sub.headers
new file mode 100644
index 0000000000..f1f18d6708
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-opener-policy/reporting/navigation-reporting/reporting-popup-unsafe-none-report-to.https.html.sub.headers
@@ -0,0 +1,2 @@
+Reporting-Endpoints: coop-report-endpoint="https://{{host}}:{{ports[https][0]}}/reporting/resources/report.py?reportID=1f79b0d5-c2a2-4e0b-8e8c-651af2321964", coop-report-only-endpoint="https://{{host}}:{{ports[https][0]}}/reporting/resources/report.py?reportID=c50700c8-db1e-4224-b06f-4c6a95a5f4be"
+Cross-Origin-Opener-Policy: unsafe-none; report-to="coop-report-endpoint"
diff --git a/testing/web-platform/tests/html/cross-origin-opener-policy/reporting/navigation-reporting/reporting-redirect-with-same-origin-allow-popups.https.html b/testing/web-platform/tests/html/cross-origin-opener-policy/reporting/navigation-reporting/reporting-redirect-with-same-origin-allow-popups.https.html
new file mode 100644
index 0000000000..cd2f6b67b3
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-opener-policy/reporting/navigation-reporting/reporting-redirect-with-same-origin-allow-popups.https.html
@@ -0,0 +1,111 @@
+
+  Tests the redirect interaction with COOP same-origin-allow-popups.
+
+
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/cross-origin-opener-policy/reporting/resources/reporting-common.js b/testing/web-platform/tests/html/cross-origin-opener-policy/reporting/resources/reporting-common.js
new file mode 100644
index 0000000000..70bb4897f5
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-opener-policy/reporting/resources/reporting-common.js
@@ -0,0 +1,422 @@
+const executor_path = "/common/dispatcher/executor.html?pipe=";
+const coep_header = '|header(Cross-Origin-Embedder-Policy,require-corp)';
+
+// Report endpoint keys must start with a lower case alphabet character.
+// https://datatracker.ietf.org/doc/html/draft-ietf-httpbis-header-structure-15#section-4.2.3.3
+const reportToken = () => {
+  return token().replace(/./, 'a');
+}
+
+const isWPTSubEnabled = "{{GET[pipe]}}".includes("sub");
+
+const getReportEndpointURL = (reportID) =>
+  `/reporting/resources/report.py?reportID=${reportID}`;
+
+const reportEndpoint = {
+  name: "coop-report-endpoint",
+  reportID: isWPTSubEnabled ? "{{GET[report_id]}}" : token(),
+  reports: []
+};
+const reportOnlyEndpoint = {
+  name: "coop-report-only-endpoint",
+  reportID: isWPTSubEnabled ? "{{GET[report_only_id]}}" : token(),
+  reports: []
+};
+const popupReportEndpoint = {
+  name: "coop-popup-report-endpoint",
+  reportID: token(),
+  reports: []
+};
+const popupReportOnlyEndpoint = {
+  name: "coop-popup-report-only-endpoint",
+  reportID: token(),
+  reports: []
+};
+const redirectReportEndpoint = {
+  name: "coop-redirect-report-endpoint",
+  reportID: token(),
+  reports: []
+};
+const redirectReportOnlyEndpoint = {
+  name: "coop-redirect-report-only-endpoint",
+  reportID: token(),
+  reports: []
+};
+
+const reportEndpoints = [
+  reportEndpoint,
+  reportOnlyEndpoint,
+  popupReportEndpoint,
+  popupReportOnlyEndpoint,
+  redirectReportEndpoint,
+  redirectReportOnlyEndpoint
+];
+
+// Allows RegExps to be pretty printed when printing unmatched expected reports.
+Object.defineProperty(RegExp.prototype, "toJSON", {
+  value: RegExp.prototype.toString
+});
+
+function wait(ms) {
+  return new Promise(resolve => step_timeout(resolve, ms));
+}
+
+// Check whether a |report| is a "opener breakage" COOP report.
+function isCoopOpenerBreakageReport(report) {
+  if (report.type != "coop")
+    return false;
+
+  if (report.body.type != "navigation-from-response" &&
+      report.body.type != "navigation-to-response") {
+    return false;
+  }
+
+  return true;
+}
+
+async function clearReportsOnServer(host) {
+  const res = await fetch(
+    '/reporting/resources/report.py', {
+      method: "POST",
+    body: JSON.stringify({
+      op: "DELETE",
+      reportIDs: reportEndpoints.map(endpoint => endpoint.reportID)
+    })
+  });
+  assert_equals(res.status, 200, "reports cleared");
+}
+
+async function pollReports(endpoint) {
+  const res = await fetch(getReportEndpointURL(endpoint.reportID),
+    { cache: 'no-store' });
+  if (res.status !== 200) {
+    return;
+  }
+  for (const report of await res.json()) {
+    if (isCoopOpenerBreakageReport(report))
+      endpoint.reports.push(report);
+  }
+}
+
+// Recursively check that all members of expectedReport are present or matched
+// in report.
+// Report may have members not explicitly expected by expectedReport.
+function isObjectAsExpected(report, expectedReport) {
+  if (( report === undefined || report === null
+        || expectedReport === undefined || expectedReport === null )
+      && report !== expectedReport ) {
+    return false;
+  }
+  if (expectedReport instanceof RegExp && typeof report === "string") {
+    return expectedReport.test(report);
+  }
+  // Perform this check now, as RegExp and strings above have different typeof.
+  if (typeof report !== typeof expectedReport)
+    return false;
+  if (typeof expectedReport === 'object') {
+    return Object.keys(expectedReport).every(key => {
+      return isObjectAsExpected(report[key], expectedReport[key]);
+    });
+  }
+  return report == expectedReport;
+}
+
+async function checkForExpectedReport(expectedReport) {
+  return new Promise( async (resolve, reject) => {
+    const polls = 20;
+    const waitTime = 200;
+    for (var i=0; i < polls; ++i) {
+      pollReports(expectedReport.endpoint);
+      for (var j=0; j replaceValuesInExpectedReport(report, executorToken) );
+  await Promise.all(Array.from(expectedReports, checkForExpectedReport));
+}
+
+function convertToWPTHeaderPipe([name, value]) {
+  return `header(${name}, ${encodeURIComponent(value)})`;
+}
+
+function getReportToHeader(host) {
+  return [
+    "Report-To",
+    reportEndpoints.map(
+      reportEndpoint => {
+        const reportToJSON = {
+          'group': `${reportEndpoint.name}`,
+          'max_age': 3600,
+          'endpoints': [{
+            'url': `${host}${getReportEndpointURL(reportEndpoint.reportID)}`
+          }]
+        };
+        // Escape comma as required by wpt pipes.
+        return JSON.stringify(reportToJSON)
+          .replace(/,/g, '\\,')
+          .replace(/\(/g, '\\\(')
+          .replace(/\)/g, '\\\)=');
+      }
+    ).join("\\, ")];
+}
+
+function getReportingEndpointsHeader(host) {
+  return [
+    "Reporting-Endpoints",
+    reportEndpoints.map(reportEndpoint => {
+      return `${reportEndpoint.name}="${host}${getReportEndpointURL(reportEndpoint.reportID)}"`;
+    }).join("\\, ")];
+}
+
+// Return Report and Report-Only policy headers.
+function getPolicyHeaders(coop, coep, coopRo, coepRo) {
+  return [
+    [`Cross-Origin-Opener-Policy`, coop],
+    [`Cross-Origin-Embedder-Policy`, coep],
+    [`Cross-Origin-Opener-Policy-Report-Only`, coopRo],
+    [`Cross-Origin-Embedder-Policy-Report-Only`, coepRo]];
+}
+
+function navigationReportingTest(testName, host, coop, coep, coopRo, coepRo,
+  expectedReports) {
+  const executorToken = token();
+  const callbackToken = token();
+  promise_test(async t => {
+    await reportingTest(async resolve => {
+      const openee_headers = [
+        getReportingEndpointsHeader(host.origin),
+        ...getPolicyHeaders(coop, coep, coopRo, coepRo)
+      ].map(convertToWPTHeaderPipe);
+      const openee_url = host.origin + executor_path +
+        openee_headers.join('|') + `&uuid=${executorToken}`;
+      const openee = window.open(openee_url);
+      const uuid = token();
+      t.add_cleanup(() => send(uuid, "window.close()"));
+
+      // 1. Make sure the new document is loaded.
+      send(executorToken, `
+      send("${callbackToken}", "Ready");
+    `);
+      let reply = await receive(callbackToken);
+      assert_equals(reply, "Ready");
+      resolve();
+    }, executorToken, expectedReports);
+  }, `coop reporting test ${testName} to ${host.name} with ${coop}, ${coep}, ${coopRo}, ${coepRo}`);
+}
+
+function navigationDocumentReportingTest(testName, host, coop, coep, coopRo,
+  coepRo, expectedReports) {
+  const executorToken = token();
+  const callbackToken = token();
+  promise_test(async t => {
+    const openee_headers = [
+      getReportingEndpointsHeader(host.origin),
+      ...getPolicyHeaders(coop, coep, coopRo, coepRo)
+    ].map(convertToWPTHeaderPipe);
+    const openee_url = host.origin + executor_path +
+      openee_headers.join('|') + `&uuid=${executorToken}`;
+    window.open(openee_url);
+    t.add_cleanup(() => send(executorToken, "window.close()"));
+    // Have openee window send a message through dispatcher, once we receive
+    // the Ready message from dispatcher it means the openee is fully loaded.
+    send(executorToken, `
+      send("${callbackToken}", "Ready");
+    `);
+    let reply = await receive(callbackToken);
+    assert_equals(reply, "Ready");
+
+    await wait(1000);
+
+    expectedReports = expectedReports.map(
+      (report) => replaceValuesInExpectedReport(report, executorToken));
+    return Promise.all(expectedReports.map(
+      async ({ endpoint, report: expectedReport }) => {
+        await pollReports(endpoint);
+        for (let report of endpoint.reports) {
+          assert_true(isObjectAsExpected(report, expectedReport),
+            `report received for endpoint: ${endpoint.name} ${JSON.stringify(report)} should match ${JSON.stringify(expectedReport)}`);
+        }
+        assert_equals(endpoint.reports.length, 1, `has exactly one report for ${endpoint.name}`)
+      }));
+  }, `coop document reporting test ${testName} to ${host.name} with ${coop}, ${coep}, ${coopRo}, ${coepRo}`);
+}
+
+// Run an array of reporting tests then verify there's no reports that were not
+// expected.
+// Tests' elements contain: host, coop, coep, coop-report-only,
+// coep-report-only, expectedReports.
+// See isObjectAsExpected for explanations regarding the matching behavior.
+async function runNavigationReportingTests(testName, tests) {
+  await clearReportsOnServer();
+  tests.forEach(test => {
+    navigationReportingTest(testName, ...test);
+  });
+  verifyRemainingReports();
+}
+
+// Run an array of reporting tests using Reporting-Endpoints header then
+// verify there's no reports that were not expected.
+// Tests' elements contain: host, coop, coep, coop-report-only,
+// coep-report-only, expectedReports.
+// See isObjectAsExpected for explanations regarding the matching behavior.
+function runNavigationDocumentReportingTests(testName, tests) {
+  clearReportsOnServer();
+  tests.forEach(test => {
+    navigationDocumentReportingTest(testName, ...test);
+  });
+}
+
+function verifyRemainingReports() {
+  promise_test(t => {
+    return Promise.all(reportEndpoints.map(async (endpoint) => {
+      await pollReports(endpoint);
+      assert_equals(endpoint.reports.length, 0, `${endpoint.name} should be empty`);
+    }));
+  }, "verify remaining reports");
+}
+
+const receiveReport = async function(uuid, type) {
+  while(true) {
+    let reports = await Promise.race([
+      receive(uuid),
+      new Promise(resolve => {
+        step_timeout(resolve, 1000, "timeout");
+      })
+    ]);
+    if (reports == "timeout")
+      return "timeout";
+    reports = JSON.parse(reports);
+    for(report of reports) {
+      if (report?.body?.type == type)
+        return report;
+    }
+  }
+}
+
+const coopHeaders = function (uuid) {
+  // Use a custom function instead of convertToWPTHeaderPipe(), to avoid
+  // encoding double quotes as %22, which messes with the reporting endpoint
+  // registration.
+  let getHeader = (uuid, coop_value, is_report_only) => {
+    const header_name =
+      is_report_only ?
+      "Cross-Origin-Opener-Policy-Report-Only":
+      "Cross-Origin-Opener-Policy";
+    return `|header(${header_name},${coop_value}%3Breport-to="${uuid}")`;
+  }
+
+  return {
+    coopSameOriginHeader:
+        getHeader(uuid, "same-origin", is_report_only = false),
+    coopSameOriginAllowPopupsHeader:
+        getHeader(uuid, "same-origin-allow-popups", is_report_only = false),
+    coopRestrictPropertiesHeader:
+        getHeader(uuid, "restrict-properties", is_report_only = false),
+    coopReportOnlySameOriginHeader:
+        getHeader(uuid, "same-origin", is_report_only = true),
+    coopReportOnlySameOriginAllowPopupsHeader:
+        getHeader(uuid, "same-origin-allow-popups", is_report_only = true),
+    coopReportOnlyRestrictPropertiesHeader:
+        getHeader(uuid, "restrict-properties", is_report_only = true),
+  };
+}
+
+// Build a set of headers to tests the reporting API. This defines a set of
+// matching 'Report-To', 'Cross-Origin-Opener-Policy' and
+// 'Cross-Origin-Opener-Policy-Report-Only' headers.
+const reportToHeaders = function(uuid) {
+  const report_endpoint_url = dispatcher_path + `?uuid=${uuid}`;
+  let reportToJSON = {
+    'group': `${uuid}`,
+    'max_age': 3600,
+    'endpoints': [
+      {'url': report_endpoint_url.toString()},
+    ]
+  };
+  reportToJSON = JSON.stringify(reportToJSON)
+                     .replace(/,/g, '\\,')
+                     .replace(/\(/g, '\\\(')
+                     .replace(/\)/g, '\\\)=');
+
+  return {
+    header: `|header(report-to,${reportToJSON})`,
+    ...coopHeaders(uuid)
+  };
+};
+
+// Build a set of headers to tests the reporting API. This defines a set of
+// matching 'Reporting-Endpoints', 'Cross-Origin-Opener-Policy' and
+// 'Cross-Origin-Opener-Policy-Report-Only' headers.
+const reportingEndpointsHeaders = function (uuid) {
+  // Report endpoint keys must start with a lower case alphabet:
+  // https://datatracker.ietf.org/doc/html/draft-ietf-httpbis-header-structure-15#section-4.2.3.3
+  assert_true(uuid.match(/^[a-z].*/) != null, 'Use reportToken() instead.');
+
+  const report_endpoint_url = dispatcher_path + `?uuid=${uuid}`;
+  const reporting_endpoints_header = `${uuid}="${report_endpoint_url}"`;
+
+  return {
+    header: `|header(Reporting-Endpoints,${reporting_endpoints_header})`,
+    ...coopHeaders(uuid)
+  };
+};
diff --git a/testing/web-platform/tests/html/cross-origin-opener-policy/reporting/resources/test-access-property.js b/testing/web-platform/tests/html/cross-origin-opener-policy/reporting/resources/test-access-property.js
new file mode 100644
index 0000000000..a405202431
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-opener-policy/reporting/resources/test-access-property.js
@@ -0,0 +1,65 @@
+const same_origin = get_host_info().HTTPS_ORIGIN;
+const cross_origin = get_host_info().HTTPS_REMOTE_ORIGIN;
+
+const origin = [
+  ["same-origin" , same_origin ],
+  ["cross-origin", cross_origin],
+];
+let escapeComma = url => url.replace(/,/g, '\\,');
+
+let testAccessProperty = (
+  property,
+  op,
+  expectReport = true,
+  use_restrict_properties = false,
+) => {
+  origin.forEach(([origin_name, origin]) => {
+    promise_test(async t => {
+      const this_window_token = token();
+
+      // The opener window:
+      const opener_token = token();
+      const opener_url = get_host_info().HTTP_ORIGIN + executor_path +
+        `&uuid=${opener_token}`;
+
+      // The openee window:
+      const openee_token = token();
+      const openee_report_token = token();
+      const openee_report_to = reportToHeaders(openee_report_token);
+      const coop_ro_header =
+        use_restrict_properties
+          ? openee_report_to.coopReportOnlyRestrictPropertiesHeader
+          : openee_report_to.coopReportOnlySameOriginHeader;
+      const openee_url = origin + executor_path + openee_report_to.header +
+        coop_ro_header + coep_header + `&uuid=${openee_token}`;
+
+      t.add_cleanup(() => {
+        send(opener_token, "window.close()")
+        send(openee_token, "window.close()")
+      });
+
+      // Open the two windows. Wait for them to be loaded.
+      window.open(opener_url);
+      send(opener_token, `
+        window.openee = window.open('${escapeComma(openee_url)}');
+      `);
+      send(openee_token, `send("${this_window_token}", "Ready");`);
+      assert_equals(await receive(this_window_token), "Ready");
+
+      // 2. Try to access the openee.
+      send(opener_token, `(${op})(openee);`);
+
+      // 3. Fetch reports sent to the openee.
+      let report = await receiveReport(openee_report_token,
+        "access-to-coop-page-from-opener");
+      if (expectReport) {
+        assert_equals(report.body.property, property);
+      } else {
+        // "timeout" should be returned if no such reports are received.
+        assert_equals(report, "timeout");
+      }
+
+
+    }, `${origin_name} > ${op}`);
+  })
+};
diff --git a/testing/web-platform/tests/html/cross-origin-opener-policy/reporting/resources/try-access.js b/testing/web-platform/tests/html/cross-origin-opener-policy/reporting/resources/try-access.js
new file mode 100644
index 0000000000..a06cb07904
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-opener-policy/reporting/resources/try-access.js
@@ -0,0 +1,20 @@
+// A function trying to access to |w| through a "CrossOrigin" attribute (blur).
+// This function is kept in its own file to ensure the source location of the
+// call stays constant.
+function tryAccess(w) {
+  try {
+    w.blur();
+  } catch(e) {}
+}
+
+function assert_source_location_found(report) {
+  assert_true(report.body.sourceFile.includes("try-access.js"));
+  assert_equals(report.body.lineNumber, 6);
+  assert_equals(report.body.columnNumber, 7);
+}
+
+function assert_source_location_missing(report) {
+  assert_equals(report.body.sourceFile, undefined);
+  assert_equals(report.body.lineNumber, undefined);
+  assert_equals(report.body.columnNumber, undefined);
+}
diff --git a/testing/web-platform/tests/html/cross-origin-opener-policy/resource-popup.https.html b/testing/web-platform/tests/html/cross-origin-opener-policy/resource-popup.https.html
new file mode 100644
index 0000000000..481cceb72f
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-opener-policy/resource-popup.https.html
@@ -0,0 +1,91 @@
+
+
+
+Cross-Origin-Opener-Policy forces browsing context switch in various popup document types
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  These tests create a "parent" popup window which is an HTML document with a
+specific Cross-Origin-Opener-Policy. The parent creates a "child" popup window
+which is a non-HTML document with a Cross-Origin-Opener-Policy of its own. The
+parent waits for the child's location to change from "about:blank"
+and then inspects its name and closed properties
+which it reports back to the test context.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  The HTTP `Refresh` header is used to ensure the child eventually closes
+itself (since proper observance of COOP will prevent the parent from closing
+the child in some cases).
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
+
diff --git a/testing/web-platform/tests/html/cross-origin-opener-policy/resources/call-functionCalledByOpenee.html b/testing/web-platform/tests/html/cross-origin-opener-policy/resources/call-functionCalledByOpenee.html
new file mode 100644
index 0000000000..d0ff0b723e
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-opener-policy/resources/call-functionCalledByOpenee.html
@@ -0,0 +1,5 @@
+
+
+
diff --git a/testing/web-platform/tests/html/cross-origin-opener-policy/resources/common.js b/testing/web-platform/tests/html/cross-origin-opener-policy/resources/common.js
new file mode 100644
index 0000000000..a005cb8a20
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-opener-policy/resources/common.js
@@ -0,0 +1,86 @@
+// To use the functions below, be sure to include the following files in your
+// test:
+// - "/common/get-host-info.sub.js" to get the different origin values.
+
+const SAME_ORIGIN = {origin: get_host_info().HTTPS_ORIGIN, name: "SAME_ORIGIN"};
+const SAME_SITE = {origin: get_host_info().HTTPS_REMOTE_ORIGIN, name: "SAME_SITE"};
+const CROSS_ORIGIN = {origin: get_host_info().HTTPS_NOTSAMESITE_ORIGIN, name: "CROSS_ORIGIN"}
+
+function addScriptAndTriggerOnload(src, onload){
+  return `script = document.createElement("script");
+  script.src= "${src}" ;
+  script.onload = () => {
+    ${onload}
+  };
+  document.head.append(script);`
+}
+
+function verify_window(callback, w, hasOpener) {
+  // If there's no opener, the w must be closed:
+  assert_equals(w.closed, !hasOpener, 'w.closed');
+  // Opener's access on w.length is possible only if hasOpener:
+  assert_equals(w.length, hasOpener? 1: 0, 'w.length');
+  callback();
+}
+
+function validate_results(callback, test, w, channelName, hasOpener, openerDOMAccess, payload) {
+  assert_equals(payload.name, hasOpener ? channelName : "", 'name');
+  assert_equals(payload.opener, hasOpener, 'opener');
+  // TODO(zcorpan): add openerDOMAccess expectations to all tests
+  if (openerDOMAccess !== undefined) {
+    assert_equals(payload.openerDOMAccess, openerDOMAccess, 'openerDOMAccess');
+  }
+
+  // The window proxy in Chromium might still reflect the previous frame,
+  // until its unloaded. This delays the verification of w here.
+  if( !w.closed && w.length == 0) {
+    test.step_timeout( () => {
+        verify_window(callback, w, hasOpener);
+    }, 500);
+  } else {
+    verify_window(callback, w, hasOpener);
+  }
+}
+
+// Note: This function is deprecated and should not be used by new tests.
+// Instead, use `dispatcher_url_test()`.
+function url_test(t, url, channelName, hasOpener, openerDOMAccess, callback) {
+  if (callback === undefined) {
+    callback = () => { t.done(); };
+  }
+  const bc = new BroadcastChannel(channelName);
+  bc.onmessage = t.step_func(event => {
+    const payload = event.data;
+    validate_results(callback, t, w, channelName, hasOpener, openerDOMAccess, payload);
+  });
+
+  const w = window.open(url, channelName);
+
+  // Close the popup once the test is complete.
+  // The browsing context might be closed hence use the broadcast channel
+  // to trigger the closure.
+  t.add_cleanup(() => {
+    bc.postMessage("close");
+  });
+}
+
+// Similar to `url_test()` above except that this uses a dispatcher instead of
+// BroadcastChannel (useful in cases where the context we are testing in is a
+// third-party iframe that doesn't share a partition with the top-level
+// site).
+async function dispatcher_url_test(t, url, responseToken, iframeToken, hasOpener, openerDOMAccess, callback) {
+
+  const w = window.open(url, responseToken);
+
+  // Close the popup once the test is complete.
+  // The browsing context might be closed hence we'll have the iframe trigger
+  // the closure by sending it a 'close' message.
+  t.add_cleanup(async () => {
+    await send(iframeToken, "close");
+  });
+
+  var payload = await receive(responseToken);
+  payload = JSON.parse(payload);
+  validate_results(callback, t, w, responseToken, hasOpener, openerDOMAccess, payload);
+}
+
diff --git a/testing/web-platform/tests/html/cross-origin-opener-policy/resources/coop-coep.py b/testing/web-platform/tests/html/cross-origin-opener-policy/resources/coop-coep.py
new file mode 100644
index 0000000000..d8e3bf0d42
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-opener-policy/resources/coop-coep.py
@@ -0,0 +1,84 @@
+import json
+
+def main(request, response):
+    requestData = request.GET
+    if request.method == u"POST":
+        requestData = request.POST
+
+    coop = requestData.first(b"coop")
+    coopReportOnly = requestData.first(b"coop-report-only", None)
+    coep = requestData.first(b"coep")
+    coepReportOnly = requestData.first(b"coep-report-only", None)
+    redirect = requestData.first(b"redirect", None)
+    if coop != b"":
+        response.headers.set(b"Cross-Origin-Opener-Policy", coop)
+    if coopReportOnly is not None:
+        response.headers.set(b"Cross-Origin-Opener-Policy-Report-Only", coopReportOnly)
+    if coep != b"":
+        response.headers.set(b"Cross-Origin-Embedder-Policy", coep)
+    if coepReportOnly is not None:
+        response.headers.set(b"Cross-Origin-Embedder-Policy-Report-Only", coepReportOnly)
+    if b'cache' in requestData:
+        response.headers.set(b'Cache-Control', b'max-age=3600')
+    host = request.url_parts[1]
+
+    if redirect != None:
+        response.status = 302
+        response.headers.set(b"Location", redirect)
+        return
+
+    # Collect relevant params to be visible to response JS
+    params = {}
+    for key in (b"navHistory", b"avoidBackAndForth", b"navigate", b"channel", b"responseToken", b"iframeToken"):
+        value = requestData.first(key, None)
+        params[key.decode()] = value and value.decode()
+
+    response.content = b"""
+
+
+
+
+
+
+
+""" % json.dumps(params).encode("utf-8")
diff --git a/testing/web-platform/tests/html/cross-origin-opener-policy/resources/coop-same-origin-repeated.asis b/testing/web-platform/tests/html/cross-origin-opener-policy/resources/coop-same-origin-repeated.asis
new file mode 100644
index 0000000000..082478e159
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-opener-policy/resources/coop-same-origin-repeated.asis
@@ -0,0 +1,24 @@
+HTTP/1.1 200 OK
+Cross-Origin-Opener-Policy: same-origin
+Cross-Origin-Opener-Policy: same-origin
+Server: BaseHTTP/0.3 Python/2.7.15+
+Date: Wed, 18 Dec 2019 00:47:08 GMT
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/cross-origin-opener-policy/resources/csp-sandbox.py b/testing/web-platform/tests/html/cross-origin-opener-policy/resources/csp-sandbox.py
new file mode 100644
index 0000000000..6cf21aeccf
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-opener-policy/resources/csp-sandbox.py
@@ -0,0 +1,29 @@
+def main(request, response):
+    coop = request.GET.first(b"coop")
+    coep = request.GET.first(b"coep")
+    sandbox = request.GET.first(b"sandbox")
+    if coop != "":
+        response.headers.set(b"Cross-Origin-Opener-Policy", coop)
+    if coep != "":
+        response.headers.set(b"Cross-Origin-Embedder-Policy", coep)
+    response.headers.set(b"Content-Security-Policy", b"sandbox " + sandbox + b";")
+
+    # Open a popup to coop-coep.py with the same parameters (except sandbox)
+    response.content = b"""
+
+
+
+
+
+"""
diff --git a/testing/web-platform/tests/html/cross-origin-opener-policy/resources/fully-loaded.js b/testing/web-platform/tests/html/cross-origin-opener-policy/resources/fully-loaded.js
new file mode 100644
index 0000000000..d40e00af43
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-opener-policy/resources/fully-loaded.js
@@ -0,0 +1,10 @@
+// Return a promise, which resolves when new navigations aren't considered
+// client-side redirects anymore.
+//
+// Note: A long `setTimeout` is used, because client-side redirect is an
+// heuristic and isn't clearly specified.
+function fullyLoaded() {
+  return new Promise((resolve, reject) => {
+    addEventListener('load', () => setTimeout(resolve, 2000))
+  });
+}
diff --git a/testing/web-platform/tests/html/cross-origin-opener-policy/resources/iframe-test.js b/testing/web-platform/tests/html/cross-origin-opener-policy/resources/iframe-test.js
new file mode 100644
index 0000000000..f788cbd1eb
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-opener-policy/resources/iframe-test.js
@@ -0,0 +1,234 @@
+// To use the functions below, be sure to include the following files in your
+// test:
+// - "/common/get-host-info.sub.js" to get the different origin values.
+// - "common.js" to have the origins easily available.
+// - "/common/dispatcher/dispatcher.js" for cross-origin messaging.
+// - "/common/utils.js" for token().
+
+function getBaseExecutorPath(origin) {
+  return origin + '/common/dispatcher/executor.html';
+}
+
+function getHeadersPipe(headers) {
+  const coop_header = headers.coop ?
+    `|header(Cross-Origin-Opener-Policy,${encodeURIComponent(headers.coop)})` : '';
+  const coep_header = headers.coep ?
+    `|header(Cross-Origin-Embedder-Policy,${encodeURIComponent(headers.coep)})` : '';
+  return coop_header + coep_header;
+}
+
+function getExecutorPath(uuid, origin, headers) {
+  return getBaseExecutorPath(origin) +
+    `?uuid=${uuid}` +
+    `&pipe=${getHeadersPipe(headers)}`;
+}
+
+function evaluate(target_token, script) {
+  const reply_token = token();
+  send(target_token, `send('${reply_token}', ${script});`);
+  return receive(reply_token);
+}
+
+// Return true if an opened iframe can access |property| on a stored
+// window.popup object without throwing an error.
+function iframeCanAccessProperty(iframe_token, property) {
+  const reply_token = token();
+  send(iframe_token,
+    `try {
+       const unused = window.popup['${property}'];
+       send('${reply_token}', 'true')
+     } catch (errors) {
+       send('${reply_token}', 'false')
+     }`);
+  return receive(reply_token);
+}
+
+// Returns the script necessary to open a popup, given the method in
+// `popup_via`. Supported methods are 'window_open' that leverages
+// window.open(), 'anchor' that creates an  HTML element and clicks on it,
+// and 'form' that creates a form and submits it.
+function popupOpeningScript(popup_via, popup_url, popup_origin, headers,
+    popup_token) {
+  if (popup_via === 'window_open')
+    return `window.popup = window.open('${popup_url}', '${popup_token}');`;
+
+  if (popup_via === 'anchor') {
+    return `
+      const anchor = document.createElement('a');
+      anchor.href = '${popup_url}';
+      anchor.rel = "opener";
+      anchor.target = '${popup_token}';
+      anchor.innerText = "anchor";
+      document.body.appendChild(anchor);
+      anchor.click();
+      `;
+  }
+
+  if (popup_via === "form") {
+    return `
+      const form = document.createElement("form");
+      form.action = '${getBaseExecutorPath(popup_origin.origin)}';
+      form.target = '${popup_token}';
+      form.method = 'GET';
+      const add_param = (name, value) => {
+        const input = document.createElement("input");
+        input.name = name;
+        input.value = value;
+        form.appendChild(input);
+      };
+      add_param("uuid", "${popup_token}");
+      add_param("pipe", "${getHeadersPipe(headers)}");
+      document.body.appendChild(form);
+      form.submit();
+      `;
+  }
+
+  assert_not_reached('Unrecognized popup opening method.');
+}
+
+
+// Verifies that a popup with origin `popup_origin` and headers `headers` has
+// the expected `opener_state` after being opened from an iframe with origin
+// `iframe_origin`.
+function iframe_test(description, iframe_origin, popup_origin, headers,
+    expected_opener_state) {
+  for (const popup_via of ['window_open', 'anchor','form']) {
+    promise_test(async t => {
+      const iframe_token = token();
+      const popup_token = token();
+      const reply_token = token();
+
+      const frame = document.createElement("iframe");
+      const iframe_url = getExecutorPath(
+        iframe_token,
+        iframe_origin.origin,
+        {});
+
+      frame.src = iframe_url;
+      document.body.append(frame);
+
+      send(iframe_token, `send('${reply_token}', 'Iframe loaded');`);
+      assert_equals(await receive(reply_token), 'Iframe loaded');
+
+      const popup_url = getExecutorPath(
+        popup_token,
+        popup_origin.origin,
+        headers);
+
+      // We open popup and then ping it, it will respond after loading.
+      send(iframe_token, popupOpeningScript(popup_via, popup_url, popup_origin,
+                                            headers, popup_token));
+      send(popup_token, `send('${reply_token}', 'Popup loaded');`);
+      assert_equals(await receive(reply_token), 'Popup loaded');
+
+      // Make sure the popup and the iframe are removed once the test has run,
+      // keeping a clean state.
+      add_completion_callback(() => {
+        frame.remove();
+        send(popup_token, `close()`);
+      });
+
+      // Give some time for things to settle across processes etc. before
+      // proceeding with verifications.
+      await new Promise(resolve => { t.step_timeout(resolve, 500); });
+
+      // Verify that the opener is in the state we expect it to be in.
+      switch (expected_opener_state) {
+        case 'preserved': {
+          assert_equals(
+            await evaluate(popup_token, 'opener != null'), "true",
+            'Popup has an opener?');
+          assert_equals(
+            await evaluate(popup_token, `name === '${popup_token}'`), "true",
+            'Popup has a name?');
+
+          // When the popup was created using window.open, we've kept a handle
+          // and we can do extra verifications.
+          if (popup_via === 'window_open') {
+            assert_equals(
+              await evaluate(iframe_token, 'popup != null'), "true",
+              'Popup handle is non-null in iframe?');
+            assert_equals(
+              await evaluate(iframe_token, 'popup.closed'), "false",
+              'Popup appears closed from iframe?');
+            assert_equals(
+              await iframeCanAccessProperty(iframe_token, "document"),
+              popup_origin === iframe_origin ? "true" : "false",
+              'Iframe has dom access to the popup?');
+            assert_equals(
+              await iframeCanAccessProperty(iframe_token, "frames"), "true",
+              'Iframe has cross origin access to the popup?');
+          }
+          break;
+        }
+        case 'restricted': {
+          assert_equals(
+            await evaluate(popup_token, 'opener != null'), "true",
+            'Popup has an opener?');
+          assert_equals(
+            await evaluate(popup_token, `name === ''`), "true",
+            'Popup name is cleared?');
+
+          // When the popup was created using window.open, we've kept a handle
+          // and we can do extra verifications.
+          if (popup_via === 'window_open') {
+            assert_equals(
+              await evaluate(iframe_token, 'popup != null'), "true",
+              'Popup handle is non-null in iframe?');
+            assert_equals(
+              await evaluate(iframe_token, 'popup.closed'), "false",
+              'Popup appears closed from iframe?');
+            assert_equals(
+              await iframeCanAccessProperty(iframe_token, "document"), "false",
+              'Iframe has dom access to the popup?');
+            assert_equals(
+              await iframeCanAccessProperty(iframe_token, "frames"), "false",
+              'Iframe has cross origin access to the popup?');
+            assert_equals(
+              await iframeCanAccessProperty(iframe_token, "closed"), "true",
+              'Iframe has limited cross origin access to the popup?');
+          }
+          break;
+        }
+        case 'severed': {
+          assert_equals(await evaluate(popup_token, 'opener != null'), "false",
+                       'Popup has an opener?');
+          assert_equals(
+            await evaluate(popup_token, `name === ''`), "true",
+            'Popup name is cleared?');
+
+          // When the popup was created using window.open, we've kept a handle
+          // and we can do extra verifications.
+          if (popup_via === 'window_open') {
+            assert_equals(
+              await evaluate(iframe_token, 'popup != null'), "true",
+              'Popup handle is non-null in iframe?');
+            assert_equals(
+              await evaluate(iframe_token, 'popup.closed'), "true",
+              'Popup appears closed from iframe?');
+          }
+          break;
+        }
+        case 'noopener': {
+          assert_equals(await evaluate(popup_token, 'opener != null'), "false",
+                        'Popup has an opener?');
+          assert_equals(
+            await evaluate(popup_token, `name === ''`), "true",
+            'Popup name is cleared?');
+
+          // When the popup was created using window.open, we've kept a handle
+          // and we can do extra verifications.
+          if (popup_via === 'window_open') {
+            assert_equals(
+              await evaluate(iframe_token, 'popup == null'), "true",
+              'Popup handle is null in iframe?');
+          }
+          break;
+        }
+        default:
+          assert_not_reached('Unrecognized opener state: ' +
+            expected_opener_state);
+      }
+    }, `${description} with ${popup_via}`);
+  }
+}
diff --git a/testing/web-platform/tests/html/cross-origin-opener-policy/resources/popup-test.js b/testing/web-platform/tests/html/cross-origin-opener-policy/resources/popup-test.js
new file mode 100644
index 0000000000..c2717bb135
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-opener-policy/resources/popup-test.js
@@ -0,0 +1,99 @@
+// To use the functions below, be sure to include the following files in your
+// test:
+// - "/common/get-host-info.sub.js" to get the different origin values.
+// - "common.js" to have the origins easily available.
+// - "/common/dispatcher/dispatcher.js" for cross-origin messaging.
+// - "/common/utils.js" for token().
+
+function getExecutorPath(uuid, origin, headers) {
+  const executor_path = '/common/dispatcher/executor.html?';
+  const coop_header = headers.coop ?
+    `|header(Cross-Origin-Opener-Policy,${encodeURIComponent(headers.coop)})` : '';
+  const coep_header = headers.coep ?
+    `|header(Cross-Origin-Embedder-Policy,${encodeURIComponent(headers.coep)})` : '';
+  return origin +
+         executor_path +
+         `uuid=${uuid}` +
+         '&pipe=' + coop_header + coep_header;
+}
+
+function getPopupHasOpener(popup_token) {
+  const reply_token = token();
+  send(popup_token, `send('${reply_token}', window.opener != null);`);
+  return receive(reply_token);
+}
+
+// Return true if |object|.|property| can be called without throwing an error.
+function canAccessProperty(object, property) {
+  try {
+    const unused = object[property];
+    return true;
+  } catch (errors) {
+    return false;
+  }
+}
+
+// Verifies that a popup with origin `origin` and headers `headers` has
+// the expected `opener_state` after being opened.
+async function popup_test(description, origin, headers, expected_opener_state) {
+  promise_test(async t => {
+    const popup_token = token();
+    const reply_token = token();
+
+    const popup_url = getExecutorPath(
+      popup_token,
+      origin.origin,
+      headers);
+
+    // We open popup and then ping it, it will respond after loading.
+    const popup = window.open(popup_url);
+    send(popup_token, `send('${reply_token}', 'Popup loaded');`);
+    assert_equals(await receive(reply_token), 'Popup loaded');
+
+    // Make sure the popup will be closed once the test has run, keeping a clean
+    // state.
+    t.add_cleanup(() => {
+      send(popup_token, `close()`);
+    });
+
+    // Give some time for things to settle across processes etc. before
+    // proceeding with verifications.
+    await new Promise(resolve => { t.step_timeout(resolve, 500); });
+
+    // Verify that the opener is in the state we expect it to be in.
+    switch (expected_opener_state) {
+      case 'preserved': {
+        assert_false(popup.closed, 'Popup is closed from opener?');
+        assert_true(await getPopupHasOpener(popup_token) === "true",
+                    'Popup has nulled opener?');
+        assert_equals(canAccessProperty(popup, "document"),
+                      origin === SAME_ORIGIN,
+                      'Main page has dom access to the popup?');
+        assert_true(canAccessProperty(popup, "frames"),
+                    'Main page has cross origin access to the popup?');
+        break;
+      }
+      case 'restricted': {
+        assert_false(popup.closed, 'Popup is closed from opener?');
+        assert_true(await getPopupHasOpener(popup_token) === "true",
+                    'Popup has nulled opener?');
+        assert_false(canAccessProperty(popup, "document"),
+                     'Main page has dom access to the popup?');
+        assert_false(canAccessProperty(popup, "frames"),
+                    'Main page has cross origin access to the popup?');
+        assert_true(canAccessProperty(popup, "closed"),
+                    'Main page has limited cross origin access to the popup?');
+        break;
+      }
+      case 'severed': {
+        assert_true(popup.closed, 'Popup is closed from opener?');
+        assert_false(await getPopupHasOpener(popup_token) === "true",
+                     'Popup has nulled opener?');
+        break;
+      }
+      default:
+        assert_unreached(true, "Unrecognized opener relationship: " + expected_opener_state);
+    }
+  }, description);
+}
+
diff --git a/testing/web-platform/tests/html/cross-origin-opener-policy/resources/postback.html b/testing/web-platform/tests/html/cross-origin-opener-policy/resources/postback.html
new file mode 100644
index 0000000000..35b3be5c93
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-opener-policy/resources/postback.html
@@ -0,0 +1,45 @@
+
+
+
+
diff --git a/testing/web-platform/tests/html/cross-origin-opener-policy/resources/postback.html.headers b/testing/web-platform/tests/html/cross-origin-opener-policy/resources/postback.html.headers
new file mode 100644
index 0000000000..4e798cd9f5
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-opener-policy/resources/postback.html.headers
@@ -0,0 +1,2 @@
+Cross-Origin-Embedder-Policy: require-corp
+Cross-Origin-Resource-Policy: cross-origin
diff --git a/testing/web-platform/tests/html/cross-origin-opener-policy/resources/redirect.py b/testing/web-platform/tests/html/cross-origin-opener-policy/resources/redirect.py
new file mode 100644
index 0000000000..88dbd60fae
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-opener-policy/resources/redirect.py
@@ -0,0 +1,5 @@
+from wptserve.utils import isomorphic_encode
+
+def main(request, response):
+    response.status = 302
+    response.headers.set(b"Location", isomorphic_encode(request.url[request.url.find(u'?')+1:]))
diff --git a/testing/web-platform/tests/html/cross-origin-opener-policy/resources/resource-cleanup.html b/testing/web-platform/tests/html/cross-origin-opener-policy/resources/resource-cleanup.html
new file mode 100644
index 0000000000..3ae5587c7d
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-opener-policy/resources/resource-cleanup.html
@@ -0,0 +1,11 @@
+
+
+
+Redirect destination for non-HTML documents to close themselves
+
diff --git a/testing/web-platform/tests/html/cross-origin-opener-policy/resources/resource-popup.html b/testing/web-platform/tests/html/cross-origin-opener-policy/resources/resource-popup.html
new file mode 100644
index 0000000000..2957e35f59
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-opener-policy/resources/resource-popup.html
@@ -0,0 +1,21 @@
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/cross-origin-opener-policy/resources/universal-worker.js b/testing/web-platform/tests/html/cross-origin-opener-policy/resources/universal-worker.js
new file mode 100644
index 0000000000..2441679372
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-opener-policy/resources/universal-worker.js
@@ -0,0 +1,2 @@
+onmessage = message => eval(message.data);
+onfetch = event => fetchHandler(event);
diff --git a/testing/web-platform/tests/html/cross-origin-opener-policy/tentative/restrict-properties/README.md b/testing/web-platform/tests/html/cross-origin-opener-policy/tentative/restrict-properties/README.md
new file mode 100644
index 0000000000..b3c24c3f82
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-opener-policy/tentative/restrict-properties/README.md
@@ -0,0 +1,9 @@
+Because this test suite is run as a virtual suite and it's quite deep in the
+folders, we have to use abbreviations for the test names to not run over 200
+characters, which is problematic on Windows.
+
+* unspecified -> "u"
+* unsafe-none -> "un"
+* same-origin -> "so"
+* same-origin-allow-popups -> "soap"
+* restrict-properties -> omitted
diff --git a/testing/web-platform/tests/html/cross-origin-opener-policy/tentative/restrict-properties/access-reporting-closed.https.html b/testing/web-platform/tests/html/cross-origin-opener-policy/tentative/restrict-properties/access-reporting-closed.https.html
new file mode 100644
index 0000000000..1c315b35d7
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-opener-policy/tentative/restrict-properties/access-reporting-closed.https.html
@@ -0,0 +1,19 @@
+
+ Check openee.closed access is allowed for COOP: restrict-properties
+
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/cross-origin-opener-policy/tentative/restrict-properties/access-reporting-openee-rp-ro.https.html b/testing/web-platform/tests/html/cross-origin-opener-policy/tentative/restrict-properties/access-reporting-openee-rp-ro.https.html
new file mode 100644
index 0000000000..7a96f4f576
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-opener-policy/tentative/restrict-properties/access-reporting-openee-rp-ro.https.html
@@ -0,0 +1,62 @@
+
+
+  COOP reports are sent to the openee when the openee used COOP-RO:
+  restrict-properties and its same-origin opener tries to access it.
+
+
+
+
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/cross-origin-opener-policy/tentative/restrict-properties/access-reporting-opener-rp-ro.https.html b/testing/web-platform/tests/html/cross-origin-opener-policy/tentative/restrict-properties/access-reporting-opener-rp-ro.https.html
new file mode 100644
index 0000000000..9e1e85b16a
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-opener-policy/tentative/restrict-properties/access-reporting-opener-rp-ro.https.html
@@ -0,0 +1,71 @@
+
+
+  COOP reports are sent to the opener when the opener used COOP-RO:
+  restrict-properties and its same-origin openee tries to access it.
+
+
+
+
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/cross-origin-opener-policy/tentative/restrict-properties/access-reporting-post-message.https.html b/testing/web-platform/tests/html/cross-origin-opener-policy/tentative/restrict-properties/access-reporting-post-message.https.html
new file mode 100644
index 0000000000..5bc718e2a8
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-opener-policy/tentative/restrict-properties/access-reporting-post-message.https.html
@@ -0,0 +1,19 @@
+
+ Check openee.postMessage() access is allowed for COOP: restrict-properties
+
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/cross-origin-opener-policy/tentative/restrict-properties/coop-rp-in-navigation-chain.https.html b/testing/web-platform/tests/html/cross-origin-opener-policy/tentative/restrict-properties/coop-rp-in-navigation-chain.https.html
new file mode 100644
index 0000000000..e5c8775174
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-opener-policy/tentative/restrict-properties/coop-rp-in-navigation-chain.https.html
@@ -0,0 +1,65 @@
+
+
+
+
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/cross-origin-opener-policy/tentative/restrict-properties/coop-rp-in-navigation-chain.https.html.headers b/testing/web-platform/tests/html/cross-origin-opener-policy/tentative/restrict-properties/coop-rp-in-navigation-chain.https.html.headers
new file mode 100644
index 0000000000..073ce7adfb
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-opener-policy/tentative/restrict-properties/coop-rp-in-navigation-chain.https.html.headers
@@ -0,0 +1 @@
+Cross-Origin-Opener-Policy: unsafe-none
diff --git a/testing/web-platform/tests/html/cross-origin-opener-policy/tentative/restrict-properties/iframe-popup-about-blank.https.window.js b/testing/web-platform/tests/html/cross-origin-opener-policy/tentative/restrict-properties/iframe-popup-about-blank.https.window.js
new file mode 100644
index 0000000000..d63b69e83f
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-opener-policy/tentative/restrict-properties/iframe-popup-about-blank.https.window.js
@@ -0,0 +1,37 @@
+// META: script=/common/get-host-info.sub.js
+// META: script=/common/utils.js
+// META: script=/common/dispatcher/dispatcher.js
+
+const executor_path = '/common/dispatcher/executor.html?pipe=';
+const cross_origin = get_host_info().OTHER_ORIGIN;
+const coep_require_corp_header =
+    '|header(Cross-Origin-Embedder-Policy,require-corp)';
+const corp_cross_origin_header =
+    '|header(Cross-Origin-Resource-Policy,cross-origin)';
+
+promise_test(async t => {
+  assert_true(crossOriginIsolated, 'Is main frame crossOriginIsolated?');
+
+  const reply_token = token();
+  const iframe_token = token();
+
+  const iframe = document.createElement('iframe');
+  iframe.src = cross_origin + executor_path + coep_require_corp_header +
+      corp_cross_origin_header + `&uuid=${iframe_token}`;
+  document.body.appendChild(iframe);
+
+  send(iframe_token, `send('${reply_token}', 'Iframe loaded');`);
+  assert_equals(await receive(reply_token), 'Iframe loaded');
+
+  send(iframe_token, `
+    window.popup = window.open();
+    send('${reply_token}', popup === null);
+  `);
+  assert_equals(await receive(reply_token), 'false', 'Is popup handle null?');
+
+  send(
+      iframe_token,
+      `send('${reply_token}', popup.window.crossOriginIsolated);`);
+  assert_equals(
+      await receive(reply_token), 'false', 'Is popup crossOriginIsolated?');
+});
diff --git a/testing/web-platform/tests/html/cross-origin-opener-policy/tentative/restrict-properties/iframe-popup-about-blank.https.window.js.headers b/testing/web-platform/tests/html/cross-origin-opener-policy/tentative/restrict-properties/iframe-popup-about-blank.https.window.js.headers
new file mode 100644
index 0000000000..19d0dbe4e1
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-opener-policy/tentative/restrict-properties/iframe-popup-about-blank.https.window.js.headers
@@ -0,0 +1,2 @@
+Cross-Origin-Opener-Policy: restrict-properties
+Cross-Origin-Embedder-Policy: require-corp
diff --git a/testing/web-platform/tests/html/cross-origin-opener-policy/tentative/restrict-properties/iframe-popup-to-so.https.html b/testing/web-platform/tests/html/cross-origin-opener-policy/tentative/restrict-properties/iframe-popup-to-so.https.html
new file mode 100644
index 0000000000..740ff2595a
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-opener-policy/tentative/restrict-properties/iframe-popup-to-so.https.html
@@ -0,0 +1,90 @@
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/cross-origin-opener-policy/tentative/restrict-properties/iframe-popup-to-so.https.html.headers b/testing/web-platform/tests/html/cross-origin-opener-policy/tentative/restrict-properties/iframe-popup-to-so.https.html.headers
new file mode 100644
index 0000000000..d5c99062d2
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-opener-policy/tentative/restrict-properties/iframe-popup-to-so.https.html.headers
@@ -0,0 +1 @@
+Cross-Origin-Opener-Policy: restrict-properties
diff --git a/testing/web-platform/tests/html/cross-origin-opener-policy/tentative/restrict-properties/iframe-popup-to-soap.https.html b/testing/web-platform/tests/html/cross-origin-opener-policy/tentative/restrict-properties/iframe-popup-to-soap.https.html
new file mode 100644
index 0000000000..f3af3ca7db
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-opener-policy/tentative/restrict-properties/iframe-popup-to-soap.https.html
@@ -0,0 +1,91 @@
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/cross-origin-opener-policy/tentative/restrict-properties/iframe-popup-to-soap.https.html.headers b/testing/web-platform/tests/html/cross-origin-opener-policy/tentative/restrict-properties/iframe-popup-to-soap.https.html.headers
new file mode 100644
index 0000000000..d5c99062d2
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-opener-policy/tentative/restrict-properties/iframe-popup-to-soap.https.html.headers
@@ -0,0 +1 @@
+Cross-Origin-Opener-Policy: restrict-properties
diff --git a/testing/web-platform/tests/html/cross-origin-opener-policy/tentative/restrict-properties/iframe-popup-to-un.https.html b/testing/web-platform/tests/html/cross-origin-opener-policy/tentative/restrict-properties/iframe-popup-to-un.https.html
new file mode 100644
index 0000000000..560dfd9051
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-opener-policy/tentative/restrict-properties/iframe-popup-to-un.https.html
@@ -0,0 +1,90 @@
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/cross-origin-opener-policy/tentative/restrict-properties/iframe-popup-to-un.https.html.headers b/testing/web-platform/tests/html/cross-origin-opener-policy/tentative/restrict-properties/iframe-popup-to-un.https.html.headers
new file mode 100644
index 0000000000..d5c99062d2
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-opener-policy/tentative/restrict-properties/iframe-popup-to-un.https.html.headers
@@ -0,0 +1 @@
+Cross-Origin-Opener-Policy: restrict-properties
diff --git a/testing/web-platform/tests/html/cross-origin-opener-policy/tentative/restrict-properties/iframe-popup.https.html b/testing/web-platform/tests/html/cross-origin-opener-policy/tentative/restrict-properties/iframe-popup.https.html
new file mode 100644
index 0000000000..17840724d9
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-opener-policy/tentative/restrict-properties/iframe-popup.https.html
@@ -0,0 +1,91 @@
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/cross-origin-opener-policy/tentative/restrict-properties/iframe-popup.https.html.headers b/testing/web-platform/tests/html/cross-origin-opener-policy/tentative/restrict-properties/iframe-popup.https.html.headers
new file mode 100644
index 0000000000..d5c99062d2
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-opener-policy/tentative/restrict-properties/iframe-popup.https.html.headers
@@ -0,0 +1 @@
+Cross-Origin-Opener-Policy: restrict-properties
diff --git a/testing/web-platform/tests/html/cross-origin-opener-policy/tentative/restrict-properties/named_targeting.https.html b/testing/web-platform/tests/html/cross-origin-opener-policy/tentative/restrict-properties/named_targeting.https.html
new file mode 100644
index 0000000000..00eb6506e9
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-opener-policy/tentative/restrict-properties/named_targeting.https.html
@@ -0,0 +1,40 @@
+
+
+
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/cross-origin-opener-policy/tentative/restrict-properties/popup-so.https.html b/testing/web-platform/tests/html/cross-origin-opener-policy/tentative/restrict-properties/popup-so.https.html
new file mode 100644
index 0000000000..e5313a6e22
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-opener-policy/tentative/restrict-properties/popup-so.https.html
@@ -0,0 +1,37 @@
+
+
+
+
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/cross-origin-opener-policy/tentative/restrict-properties/popup-so.https.html.headers b/testing/web-platform/tests/html/cross-origin-opener-policy/tentative/restrict-properties/popup-so.https.html.headers
new file mode 100644
index 0000000000..46ad58d83b
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-opener-policy/tentative/restrict-properties/popup-so.https.html.headers
@@ -0,0 +1 @@
+Cross-Origin-Opener-Policy: same-origin
diff --git a/testing/web-platform/tests/html/cross-origin-opener-policy/tentative/restrict-properties/popup-soap.https.html b/testing/web-platform/tests/html/cross-origin-opener-policy/tentative/restrict-properties/popup-soap.https.html
new file mode 100644
index 0000000000..595a10a84b
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-opener-policy/tentative/restrict-properties/popup-soap.https.html
@@ -0,0 +1,37 @@
+
+
+
+
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/cross-origin-opener-policy/tentative/restrict-properties/popup-soap.https.html.headers b/testing/web-platform/tests/html/cross-origin-opener-policy/tentative/restrict-properties/popup-soap.https.html.headers
new file mode 100644
index 0000000000..d83ed86fb9
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-opener-policy/tentative/restrict-properties/popup-soap.https.html.headers
@@ -0,0 +1 @@
+Cross-Origin-Opener-Policy: same-origin-allow-popups
diff --git a/testing/web-platform/tests/html/cross-origin-opener-policy/tentative/restrict-properties/popup-u.https.html b/testing/web-platform/tests/html/cross-origin-opener-policy/tentative/restrict-properties/popup-u.https.html
new file mode 100644
index 0000000000..595a10a84b
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-opener-policy/tentative/restrict-properties/popup-u.https.html
@@ -0,0 +1,37 @@
+
+
+
+
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/cross-origin-opener-policy/tentative/restrict-properties/popup-un.https.html b/testing/web-platform/tests/html/cross-origin-opener-policy/tentative/restrict-properties/popup-un.https.html
new file mode 100644
index 0000000000..595a10a84b
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-opener-policy/tentative/restrict-properties/popup-un.https.html
@@ -0,0 +1,37 @@
+
+
+
+
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/cross-origin-opener-policy/tentative/restrict-properties/popup-un.https.html.headers b/testing/web-platform/tests/html/cross-origin-opener-policy/tentative/restrict-properties/popup-un.https.html.headers
new file mode 100644
index 0000000000..073ce7adfb
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-opener-policy/tentative/restrict-properties/popup-un.https.html.headers
@@ -0,0 +1 @@
+Cross-Origin-Opener-Policy: unsafe-none
diff --git a/testing/web-platform/tests/html/cross-origin-opener-policy/tentative/restrict-properties/popup-with-cross-origin.https.html b/testing/web-platform/tests/html/cross-origin-opener-policy/tentative/restrict-properties/popup-with-cross-origin.https.html
new file mode 100644
index 0000000000..a84d52584e
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-opener-policy/tentative/restrict-properties/popup-with-cross-origin.https.html
@@ -0,0 +1,44 @@
+
+
+
+
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/cross-origin-opener-policy/tentative/restrict-properties/popup-with-cross-origin.https.html.headers b/testing/web-platform/tests/html/cross-origin-opener-policy/tentative/restrict-properties/popup-with-cross-origin.https.html.headers
new file mode 100644
index 0000000000..d5c99062d2
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-opener-policy/tentative/restrict-properties/popup-with-cross-origin.https.html.headers
@@ -0,0 +1 @@
+Cross-Origin-Opener-Policy: restrict-properties
diff --git a/testing/web-platform/tests/html/cross-origin-opener-policy/tentative/restrict-properties/popup-with-same-origin.https.html b/testing/web-platform/tests/html/cross-origin-opener-policy/tentative/restrict-properties/popup-with-same-origin.https.html
new file mode 100644
index 0000000000..c0020fa23a
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-opener-policy/tentative/restrict-properties/popup-with-same-origin.https.html
@@ -0,0 +1,44 @@
+
+
+
+
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/cross-origin-opener-policy/tentative/restrict-properties/popup-with-same-origin.https.html.headers b/testing/web-platform/tests/html/cross-origin-opener-policy/tentative/restrict-properties/popup-with-same-origin.https.html.headers
new file mode 100644
index 0000000000..d5c99062d2
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-opener-policy/tentative/restrict-properties/popup-with-same-origin.https.html.headers
@@ -0,0 +1 @@
+Cross-Origin-Opener-Policy: restrict-properties
diff --git a/testing/web-platform/tests/html/cross-origin-opener-policy/tentative/restrict-properties/popup-with-same-site.https.html b/testing/web-platform/tests/html/cross-origin-opener-policy/tentative/restrict-properties/popup-with-same-site.https.html
new file mode 100644
index 0000000000..7d115ac7e6
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-opener-policy/tentative/restrict-properties/popup-with-same-site.https.html
@@ -0,0 +1,44 @@
+
+
+
+
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/cross-origin-opener-policy/tentative/restrict-properties/popup-with-same-site.https.html.headers b/testing/web-platform/tests/html/cross-origin-opener-policy/tentative/restrict-properties/popup-with-same-site.https.html.headers
new file mode 100644
index 0000000000..d5c99062d2
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-opener-policy/tentative/restrict-properties/popup-with-same-site.https.html.headers
@@ -0,0 +1 @@
+Cross-Origin-Opener-Policy: restrict-properties
diff --git a/testing/web-platform/tests/html/cross-origin-opener-policy/tentative/restrict-properties/reporting-bcg-reuse.https.html b/testing/web-platform/tests/html/cross-origin-opener-policy/tentative/restrict-properties/reporting-bcg-reuse.https.html
new file mode 100644
index 0000000000..9bc171a269
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-opener-policy/tentative/restrict-properties/reporting-bcg-reuse.https.html
@@ -0,0 +1,62 @@
+
+
+  Verify that we consider browsing context group reuse for COOP reporting.
+
+
+
+
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/cross-origin-opener-policy/tentative/restrict-properties/reporting-bcg-reuse.https.html.sub.headers b/testing/web-platform/tests/html/cross-origin-opener-policy/tentative/restrict-properties/reporting-bcg-reuse.https.html.sub.headers
new file mode 100644
index 0000000000..33abadd83d
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-opener-policy/tentative/restrict-properties/reporting-bcg-reuse.https.html.sub.headers
@@ -0,0 +1,2 @@
+Cross-Origin-Opener-Policy-Report-Only: restrict-properties; report-to="coop-report-only-endpoint"
+Reporting-Endpoints: coop-report-endpoint="https://{{host}}:{{ports[https][0]}}/reporting/resources/report.py?reportID=f1e361ab5854f2dcfe0224b19bc53199", coop-report-only-endpoint="https://{{host}}:{{ports[https][0]}}/reporting/resources/report.py?reportID=b6fe666b74547291d52d72790adde05c"
diff --git a/testing/web-platform/tests/html/cross-origin-opener-policy/tentative/restrict-properties/reporting-from-rp-ro.https.html b/testing/web-platform/tests/html/cross-origin-opener-policy/tentative/restrict-properties/reporting-from-rp-ro.https.html
new file mode 100644
index 0000000000..b1da8cf77c
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-opener-policy/tentative/restrict-properties/reporting-from-rp-ro.https.html
@@ -0,0 +1,83 @@
+
+
+Opening a restrict-properties
+
+
+
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/cross-origin-opener-policy/tentative/restrict-properties/reporting-from-rp-ro.https.html.sub.headers b/testing/web-platform/tests/html/cross-origin-opener-policy/tentative/restrict-properties/reporting-from-rp-ro.https.html.sub.headers
new file mode 100644
index 0000000000..07ecad96f2
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-opener-policy/tentative/restrict-properties/reporting-from-rp-ro.https.html.sub.headers
@@ -0,0 +1,2 @@
+Cross-Origin-Opener-Policy-Report-Only: restrict-properties; report-to="coop-report-only-endpoint"
+Reporting-Endpoints: coop-report-endpoint="https://{{host}}:{{ports[https][0]}}/reporting/resources/report.py?reportID=fb054dadb3a9ec17b5cd5c0152d2a7dd", coop-report-only-endpoint="https://{{host}}:{{ports[https][0]}}/reporting/resources/report.py?reportID=c265b07fbb3bffa2cd2a5179d686ced2"
diff --git a/testing/web-platform/tests/html/cross-origin-opener-policy/tentative/restrict-properties/reporting-from-rp.https.html b/testing/web-platform/tests/html/cross-origin-opener-policy/tentative/restrict-properties/reporting-from-rp.https.html
new file mode 100644
index 0000000000..a8c11d7a4a
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-opener-policy/tentative/restrict-properties/reporting-from-rp.https.html
@@ -0,0 +1,83 @@
+
+
+Opening a restrict-properties
+
+
+
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/cross-origin-opener-policy/tentative/restrict-properties/reporting-from-rp.https.html.sub.headers b/testing/web-platform/tests/html/cross-origin-opener-policy/tentative/restrict-properties/reporting-from-rp.https.html.sub.headers
new file mode 100644
index 0000000000..a61e2919c8
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-opener-policy/tentative/restrict-properties/reporting-from-rp.https.html.sub.headers
@@ -0,0 +1,2 @@
+Cross-Origin-Opener-Policy: restrict-properties; report-to="coop-report-endpoint"
+Reporting-Endpoints: coop-report-endpoint="https://{{host}}:{{ports[https][0]}}/reporting/resources/report.py?reportID=ed5a8be35e4e21c2ba960e6574e0a32c", coop-report-only-endpoint="https://{{host}}:{{ports[https][0]}}/reporting/resources/report.py?reportID=fa22ddc676642edae42c75defb82ba2e"
diff --git a/testing/web-platform/tests/html/cross-origin-opener-policy/tentative/restrict-properties/reporting-to-rp-ro.https.html b/testing/web-platform/tests/html/cross-origin-opener-policy/tentative/restrict-properties/reporting-to-rp-ro.https.html
new file mode 100644
index 0000000000..eb80842863
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-opener-policy/tentative/restrict-properties/reporting-to-rp-ro.https.html
@@ -0,0 +1,73 @@
+
+
+reporting same origin with report-to
+
+
+
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/cross-origin-opener-policy/tentative/restrict-properties/reporting-to-rp-ro.https.html.headers b/testing/web-platform/tests/html/cross-origin-opener-policy/tentative/restrict-properties/reporting-to-rp-ro.https.html.headers
new file mode 100644
index 0000000000..16903320bb
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-opener-policy/tentative/restrict-properties/reporting-to-rp-ro.https.html.headers
@@ -0,0 +1,2 @@
+Cross-Origin-Opener-Policy: unsafe-none
+Referrer-Policy: origin
diff --git a/testing/web-platform/tests/html/cross-origin-opener-policy/tentative/restrict-properties/reporting-to-rp.https.html b/testing/web-platform/tests/html/cross-origin-opener-policy/tentative/restrict-properties/reporting-to-rp.https.html
new file mode 100644
index 0000000000..ad57afccf8
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-opener-policy/tentative/restrict-properties/reporting-to-rp.https.html
@@ -0,0 +1,73 @@
+
+
+reporting same origin with report-to
+
+
+
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/cross-origin-opener-policy/tentative/restrict-properties/reporting-to-rp.https.html.headers b/testing/web-platform/tests/html/cross-origin-opener-policy/tentative/restrict-properties/reporting-to-rp.https.html.headers
new file mode 100644
index 0000000000..16903320bb
--- /dev/null
+++ b/testing/web-platform/tests/html/cross-origin-opener-policy/tentative/restrict-properties/reporting-to-rp.https.html.headers
@@ -0,0 +1,2 @@
+Cross-Origin-Opener-Policy: unsafe-none
+Referrer-Policy: origin
diff --git a/testing/web-platform/tests/html/dom/aria-attribute-reflection.html b/testing/web-platform/tests/html/dom/aria-attribute-reflection.html
new file mode 100644
index 0000000000..afcee82eda
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/aria-attribute-reflection.html
@@ -0,0 +1,410 @@
+
+
+Element Reflection for ARIA properties
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
+
+
+
+
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                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Item 1
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
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                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Hello world!
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
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+
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+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
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                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  • First description.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    • 
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                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    • 
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                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  I am an apple
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
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+
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+  
+
+  Fruit
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Delicious
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Nutritious
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+  
+
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Title
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Next
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Content2
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Content1
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+  
+
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  • Parent
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    • 
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  • Child 1
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    • 
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  • Child 2
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    • 
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+  
+
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Light DOM Heading
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Light DOM text
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Light DOM text
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+  
+
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Delicious
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Nutritious
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+  
+
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Misspelling
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Wonderful
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Fantastic
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+    
+
+  
+    
+      
+      
+    
+
+  
+
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+  
+
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+  
+
+
+  
+
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+  
+
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+  
+
+  
+
+  
+
+
diff --git a/testing/web-platform/tests/html/dom/directionality/bdi-element-invalid-dir-ref.html b/testing/web-platform/tests/html/dom/directionality/bdi-element-invalid-dir-ref.html
new file mode 100644
index 0000000000..88ccd4b9b5
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/directionality/bdi-element-invalid-dir-ref.html
@@ -0,0 +1,13 @@
+
+
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
diff --git a/testing/web-platform/tests/html/dom/directionality/bdi-element-invalid-dir.html b/testing/web-platform/tests/html/dom/directionality/bdi-element-invalid-dir.html
new file mode 100644
index 0000000000..629cee8738
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/directionality/bdi-element-invalid-dir.html
@@ -0,0 +1,17 @@
+
+
+
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ת
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
diff --git a/testing/web-platform/tests/html/dom/documents/dom-tree-accessors/Document.body.html b/testing/web-platform/tests/html/dom/documents/dom-tree-accessors/Document.body.html
new file mode 100644
index 0000000000..77de1d93b5
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/documents/dom-tree-accessors/Document.body.html
@@ -0,0 +1,227 @@
+
+Document.body
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
diff --git a/testing/web-platform/tests/html/dom/documents/dom-tree-accessors/Document.currentScript.html b/testing/web-platform/tests/html/dom/documents/dom-tree-accessors/Document.currentScript.html
new file mode 100644
index 0000000000..245bae98ee
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/documents/dom-tree-accessors/Document.currentScript.html
@@ -0,0 +1,219 @@
+
+
+Document.currentScript
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+  
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/dom/documents/dom-tree-accessors/Document.getElementsByClassName-null-undef.html b/testing/web-platform/tests/html/dom/documents/dom-tree-accessors/Document.getElementsByClassName-null-undef.html
new file mode 100644
index 0000000000..dc132e5ec7
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/documents/dom-tree-accessors/Document.getElementsByClassName-null-undef.html
@@ -0,0 +1,30 @@
+
+getElementsByClassName and null/undefined
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
diff --git a/testing/web-platform/tests/html/dom/documents/dom-tree-accessors/Element.getElementsByClassName-null-undef.html b/testing/web-platform/tests/html/dom/documents/dom-tree-accessors/Element.getElementsByClassName-null-undef.html
new file mode 100644
index 0000000000..b4d9241647
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/documents/dom-tree-accessors/Element.getElementsByClassName-null-undef.html
@@ -0,0 +1,30 @@
+
+getElementsByClassName and null/undefined
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
diff --git a/testing/web-platform/tests/html/dom/documents/dom-tree-accessors/cross-domain.js b/testing/web-platform/tests/html/dom/documents/dom-tree-accessors/cross-domain.js
new file mode 100644
index 0000000000..32effe3c45
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/documents/dom-tree-accessors/cross-domain.js
@@ -0,0 +1 @@
+//test script to check cross-domain script execution as in Document.currentScript.sub.html
\ No newline at end of file
diff --git a/testing/web-platform/tests/html/dom/documents/dom-tree-accessors/document.embeds-document.plugins-01.html b/testing/web-platform/tests/html/dom/documents/dom-tree-accessors/document.embeds-document.plugins-01.html
new file mode 100644
index 0000000000..e710798915
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/documents/dom-tree-accessors/document.embeds-document.plugins-01.html
@@ -0,0 +1,87 @@
+
+document.embeds and document.plugins
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
diff --git a/testing/web-platform/tests/html/dom/documents/dom-tree-accessors/document.forms.html b/testing/web-platform/tests/html/dom/documents/dom-tree-accessors/document.forms.html
new file mode 100644
index 0000000000..f354c57477
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/documents/dom-tree-accessors/document.forms.html
@@ -0,0 +1,83 @@
+
+
+Document.forms
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
diff --git a/testing/web-platform/tests/html/dom/documents/dom-tree-accessors/document.getElementsByClassName-same.html b/testing/web-platform/tests/html/dom/documents/dom-tree-accessors/document.getElementsByClassName-same.html
new file mode 100644
index 0000000000..a91c838d8a
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/documents/dom-tree-accessors/document.getElementsByClassName-same.html
@@ -0,0 +1,17 @@
+
+Calling getElementsByClassName with the same argument
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
diff --git a/testing/web-platform/tests/html/dom/documents/dom-tree-accessors/document.getElementsByName/document.getElementsByName-case-xhtml.xhtml b/testing/web-platform/tests/html/dom/documents/dom-tree-accessors/document.getElementsByName/document.getElementsByName-case-xhtml.xhtml
new file mode 100644
index 0000000000..f15edb6f1d
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/documents/dom-tree-accessors/document.getElementsByName/document.getElementsByName-case-xhtml.xhtml
@@ -0,0 +1,21 @@
+
+
+getElementsByName and case
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
+
diff --git a/testing/web-platform/tests/html/dom/documents/dom-tree-accessors/document.getElementsByName/document.getElementsByName-case.html b/testing/web-platform/tests/html/dom/documents/dom-tree-accessors/document.getElementsByName/document.getElementsByName-case.html
new file mode 100644
index 0000000000..9a82e6805c
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/documents/dom-tree-accessors/document.getElementsByName/document.getElementsByName-case.html
@@ -0,0 +1,16 @@
+
+getElementsByName and case
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
diff --git a/testing/web-platform/tests/html/dom/documents/dom-tree-accessors/document.getElementsByName/document.getElementsByName-id-xhtml.xhtml b/testing/web-platform/tests/html/dom/documents/dom-tree-accessors/document.getElementsByName/document.getElementsByName-id-xhtml.xhtml
new file mode 100644
index 0000000000..51b9e22f84
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/documents/dom-tree-accessors/document.getElementsByName/document.getElementsByName-id-xhtml.xhtml
@@ -0,0 +1,20 @@
+
+
+getElementsByName and ids
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
+
diff --git a/testing/web-platform/tests/html/dom/documents/dom-tree-accessors/document.getElementsByName/document.getElementsByName-id.html b/testing/web-platform/tests/html/dom/documents/dom-tree-accessors/document.getElementsByName/document.getElementsByName-id.html
new file mode 100644
index 0000000000..099215d3a7
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/documents/dom-tree-accessors/document.getElementsByName/document.getElementsByName-id.html
@@ -0,0 +1,15 @@
+
+getElementsByName and ids
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
diff --git a/testing/web-platform/tests/html/dom/documents/dom-tree-accessors/document.getElementsByName/document.getElementsByName-interface.html b/testing/web-platform/tests/html/dom/documents/dom-tree-accessors/document.getElementsByName/document.getElementsByName-interface.html
new file mode 100644
index 0000000000..97646e39cf
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/documents/dom-tree-accessors/document.getElementsByName/document.getElementsByName-interface.html
@@ -0,0 +1,16 @@
+
+Document.getElementsByName: interfaces
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
diff --git a/testing/web-platform/tests/html/dom/documents/dom-tree-accessors/document.getElementsByName/document.getElementsByName-liveness.html b/testing/web-platform/tests/html/dom/documents/dom-tree-accessors/document.getElementsByName/document.getElementsByName-liveness.html
new file mode 100644
index 0000000000..74aad6954f
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/documents/dom-tree-accessors/document.getElementsByName/document.getElementsByName-liveness.html
@@ -0,0 +1,26 @@
+
+Document.getElementsByName: liveness
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
diff --git a/testing/web-platform/tests/html/dom/documents/dom-tree-accessors/document.getElementsByName/document.getElementsByName-namespace-xhtml.xhtml b/testing/web-platform/tests/html/dom/documents/dom-tree-accessors/document.getElementsByName/document.getElementsByName-namespace-xhtml.xhtml
new file mode 100644
index 0000000000..e09ece7b1f
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/documents/dom-tree-accessors/document.getElementsByName/document.getElementsByName-namespace-xhtml.xhtml
@@ -0,0 +1,32 @@
+
+
+getElementsByName and foreign namespaces
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+a
++
+b
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
+
diff --git a/testing/web-platform/tests/html/dom/documents/dom-tree-accessors/document.getElementsByName/document.getElementsByName-namespace.html b/testing/web-platform/tests/html/dom/documents/dom-tree-accessors/document.getElementsByName/document.getElementsByName-namespace.html
new file mode 100644
index 0000000000..63b6260424
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/documents/dom-tree-accessors/document.getElementsByName/document.getElementsByName-namespace.html
@@ -0,0 +1,27 @@
+
+getElementsByName and foreign namespaces
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+a
++
+b
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
diff --git a/testing/web-platform/tests/html/dom/documents/dom-tree-accessors/document.getElementsByName/document.getElementsByName-newelements-xhtml.xhtml b/testing/web-platform/tests/html/dom/documents/dom-tree-accessors/document.getElementsByName/document.getElementsByName-newelements-xhtml.xhtml
new file mode 100644
index 0000000000..c2dc99a55d
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/documents/dom-tree-accessors/document.getElementsByName/document.getElementsByName-newelements-xhtml.xhtml
@@ -0,0 +1,126 @@
+
+
+getElementsByName and newly introduced HTML elements
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
+
+
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
+
diff --git a/testing/web-platform/tests/html/dom/documents/dom-tree-accessors/document.getElementsByName/document.getElementsByName-newelements.html b/testing/web-platform/tests/html/dom/documents/dom-tree-accessors/document.getElementsByName/document.getElementsByName-newelements.html
new file mode 100644
index 0000000000..2ab42b9733
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/documents/dom-tree-accessors/document.getElementsByName/document.getElementsByName-newelements.html
@@ -0,0 +1,47 @@
+
+getElementsByName and newly introduced HTML elements
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
+
+
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
diff --git a/testing/web-platform/tests/html/dom/documents/dom-tree-accessors/document.getElementsByName/document.getElementsByName-null-undef-xhtml.xhtml b/testing/web-platform/tests/html/dom/documents/dom-tree-accessors/document.getElementsByName/document.getElementsByName-null-undef-xhtml.xhtml
new file mode 100644
index 0000000000..06d182860b
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/documents/dom-tree-accessors/document.getElementsByName/document.getElementsByName-null-undef-xhtml.xhtml
@@ -0,0 +1,35 @@
+
+
+Calling getElementsByName with null and undefined
+
+
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
+
diff --git a/testing/web-platform/tests/html/dom/documents/dom-tree-accessors/document.getElementsByName/document.getElementsByName-null-undef.html b/testing/web-platform/tests/html/dom/documents/dom-tree-accessors/document.getElementsByName/document.getElementsByName-null-undef.html
new file mode 100644
index 0000000000..f1dfbf9e39
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/documents/dom-tree-accessors/document.getElementsByName/document.getElementsByName-null-undef.html
@@ -0,0 +1,30 @@
+
+Calling getElementsByName with null and undefined
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
diff --git a/testing/web-platform/tests/html/dom/documents/dom-tree-accessors/document.getElementsByName/document.getElementsByName-param-xhtml.xhtml b/testing/web-platform/tests/html/dom/documents/dom-tree-accessors/document.getElementsByName/document.getElementsByName-param-xhtml.xhtml
new file mode 100644
index 0000000000..e57e9d5c0d
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/documents/dom-tree-accessors/document.getElementsByName/document.getElementsByName-param-xhtml.xhtml
@@ -0,0 +1,28 @@
+
+
+getElementsByName and the param element
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
+
diff --git a/testing/web-platform/tests/html/dom/documents/dom-tree-accessors/document.getElementsByName/document.getElementsByName-param.html b/testing/web-platform/tests/html/dom/documents/dom-tree-accessors/document.getElementsByName/document.getElementsByName-param.html
new file mode 100644
index 0000000000..aa1bb01bfa
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/documents/dom-tree-accessors/document.getElementsByName/document.getElementsByName-param.html
@@ -0,0 +1,23 @@
+
+getElementsByName and the param element
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
diff --git a/testing/web-platform/tests/html/dom/documents/dom-tree-accessors/document.getElementsByName/document.getElementsByName-same.html b/testing/web-platform/tests/html/dom/documents/dom-tree-accessors/document.getElementsByName/document.getElementsByName-same.html
new file mode 100644
index 0000000000..f122857a2b
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/documents/dom-tree-accessors/document.getElementsByName/document.getElementsByName-same.html
@@ -0,0 +1,17 @@
+
+Calling getElementsByName with the same argument
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
diff --git a/testing/web-platform/tests/html/dom/documents/dom-tree-accessors/document.head-01.html b/testing/web-platform/tests/html/dom/documents/dom-tree-accessors/document.head-01.html
new file mode 100644
index 0000000000..f919d79a32
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/documents/dom-tree-accessors/document.head-01.html
@@ -0,0 +1,22 @@
+
+document.head
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
diff --git a/testing/web-platform/tests/html/dom/documents/dom-tree-accessors/document.head-02.html b/testing/web-platform/tests/html/dom/documents/dom-tree-accessors/document.head-02.html
new file mode 100644
index 0000000000..d0189574e2
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/documents/dom-tree-accessors/document.head-02.html
@@ -0,0 +1,20 @@
+
+document.head
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
diff --git a/testing/web-platform/tests/html/dom/documents/dom-tree-accessors/document.images.html b/testing/web-platform/tests/html/dom/documents/dom-tree-accessors/document.images.html
new file mode 100644
index 0000000000..10ebe5ee8a
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/documents/dom-tree-accessors/document.images.html
@@ -0,0 +1,119 @@
+
+
+Document.images
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
diff --git a/testing/web-platform/tests/html/dom/documents/dom-tree-accessors/document.links.html b/testing/web-platform/tests/html/dom/documents/dom-tree-accessors/document.links.html
new file mode 100644
index 0000000000..69c7d8c52c
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/documents/dom-tree-accessors/document.links.html
@@ -0,0 +1,27 @@
+
+
+Document.links
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
diff --git a/testing/web-platform/tests/html/dom/documents/dom-tree-accessors/document.scripts.html b/testing/web-platform/tests/html/dom/documents/dom-tree-accessors/document.scripts.html
new file mode 100644
index 0000000000..82d3db14b2
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/documents/dom-tree-accessors/document.scripts.html
@@ -0,0 +1,21 @@
+
+
+Document.scripts
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
diff --git a/testing/web-platform/tests/html/dom/documents/dom-tree-accessors/document.title-01.html b/testing/web-platform/tests/html/dom/documents/dom-tree-accessors/document.title-01.html
new file mode 100644
index 0000000000..05ddab9ca4
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/documents/dom-tree-accessors/document.title-01.html
@@ -0,0 +1,32 @@
+
+document.title with head blown away
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
diff --git a/testing/web-platform/tests/html/dom/documents/dom-tree-accessors/document.title-02.xhtml b/testing/web-platform/tests/html/dom/documents/dom-tree-accessors/document.title-02.xhtml
new file mode 100644
index 0000000000..917b8787df
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/documents/dom-tree-accessors/document.title-02.xhtml
@@ -0,0 +1,37 @@
+
+
+document.title with head blown away
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
+
diff --git a/testing/web-platform/tests/html/dom/documents/dom-tree-accessors/document.title-03.html b/testing/web-platform/tests/html/dom/documents/dom-tree-accessors/document.title-03.html
new file mode 100644
index 0000000000..952c29db5f
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/documents/dom-tree-accessors/document.title-03.html
@@ -0,0 +1,31 @@
+
+ document.title  and space normalization  
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
diff --git a/testing/web-platform/tests/html/dom/documents/dom-tree-accessors/document.title-04.xhtml b/testing/web-platform/tests/html/dom/documents/dom-tree-accessors/document.title-04.xhtml
new file mode 100644
index 0000000000..fbe891650a
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/documents/dom-tree-accessors/document.title-04.xhtml
@@ -0,0 +1,48 @@
+
+
+ document.title  and space normalization  
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
+
diff --git a/testing/web-platform/tests/html/dom/documents/dom-tree-accessors/document.title-05.html b/testing/web-platform/tests/html/dom/documents/dom-tree-accessors/document.title-05.html
new file mode 100644
index 0000000000..df6ffc30f8
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/documents/dom-tree-accessors/document.title-05.html
@@ -0,0 +1,42 @@
+
+document.title and White_Space characters
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
diff --git a/testing/web-platform/tests/html/dom/documents/dom-tree-accessors/document.title-06.html b/testing/web-platform/tests/html/dom/documents/dom-tree-accessors/document.title-06.html
new file mode 100644
index 0000000000..a80723f238
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/documents/dom-tree-accessors/document.title-06.html
@@ -0,0 +1,19 @@
+
+document.title and the empty string
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
diff --git a/testing/web-platform/tests/html/dom/documents/dom-tree-accessors/document.title-07.html b/testing/web-platform/tests/html/dom/documents/dom-tree-accessors/document.title-07.html
new file mode 100644
index 0000000000..9723d3f811
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/documents/dom-tree-accessors/document.title-07.html
@@ -0,0 +1,11 @@
+
+Document.title and DOMImplementation.createHTMLDocument
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
diff --git a/testing/web-platform/tests/html/dom/documents/dom-tree-accessors/document.title-08.html b/testing/web-platform/tests/html/dom/documents/dom-tree-accessors/document.title-08.html
new file mode 100644
index 0000000000..a643b75f4e
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/documents/dom-tree-accessors/document.title-08.html
@@ -0,0 +1,22 @@
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
diff --git a/testing/web-platform/tests/html/dom/documents/dom-tree-accessors/document.title-09.html b/testing/web-platform/tests/html/dom/documents/dom-tree-accessors/document.title-09.html
new file mode 100644
index 0000000000..a3273f626c
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/documents/dom-tree-accessors/document.title-09.html
@@ -0,0 +1,97 @@
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
diff --git a/testing/web-platform/tests/html/dom/documents/dom-tree-accessors/document.title-not-in-html-svg.html b/testing/web-platform/tests/html/dom/documents/dom-tree-accessors/document.title-not-in-html-svg.html
new file mode 100644
index 0000000000..40eccd3de3
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/documents/dom-tree-accessors/document.title-not-in-html-svg.html
@@ -0,0 +1,27 @@
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
diff --git a/testing/web-platform/tests/html/dom/documents/dom-tree-accessors/nameditem-01.html b/testing/web-platform/tests/html/dom/documents/dom-tree-accessors/nameditem-01.html
new file mode 100644
index 0000000000..2b428aa65b
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/documents/dom-tree-accessors/nameditem-01.html
@@ -0,0 +1,19 @@
+
+
+Named items: img id & name
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
diff --git a/testing/web-platform/tests/html/dom/documents/dom-tree-accessors/nameditem-02.html b/testing/web-platform/tests/html/dom/documents/dom-tree-accessors/nameditem-02.html
new file mode 100644
index 0000000000..8c3155e7e4
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/documents/dom-tree-accessors/nameditem-02.html
@@ -0,0 +1,99 @@
+
+
+Named items: iframes
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
diff --git a/testing/web-platform/tests/html/dom/documents/dom-tree-accessors/nameditem-03.html b/testing/web-platform/tests/html/dom/documents/dom-tree-accessors/nameditem-03.html
new file mode 100644
index 0000000000..be2ca173b0
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/documents/dom-tree-accessors/nameditem-03.html
@@ -0,0 +1,18 @@
+
+
+Named items: applets
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
diff --git a/testing/web-platform/tests/html/dom/documents/dom-tree-accessors/nameditem-04.html b/testing/web-platform/tests/html/dom/documents/dom-tree-accessors/nameditem-04.html
new file mode 100644
index 0000000000..b7c3ef8e9b
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/documents/dom-tree-accessors/nameditem-04.html
@@ -0,0 +1,104 @@
+
+
+Named items: forms
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
diff --git a/testing/web-platform/tests/html/dom/documents/dom-tree-accessors/nameditem-05.html b/testing/web-platform/tests/html/dom/documents/dom-tree-accessors/nameditem-05.html
new file mode 100644
index 0000000000..843ce35796
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/documents/dom-tree-accessors/nameditem-05.html
@@ -0,0 +1,104 @@
+
+
+Named items: embeds
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
diff --git a/testing/web-platform/tests/html/dom/documents/dom-tree-accessors/nameditem-06.html b/testing/web-platform/tests/html/dom/documents/dom-tree-accessors/nameditem-06.html
new file mode 100644
index 0000000000..15a72b5f6b
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/documents/dom-tree-accessors/nameditem-06.html
@@ -0,0 +1,104 @@
+
+
+Named items: imgs
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
diff --git a/testing/web-platform/tests/html/dom/documents/dom-tree-accessors/nameditem-07.html b/testing/web-platform/tests/html/dom/documents/dom-tree-accessors/nameditem-07.html
new file mode 100644
index 0000000000..fc3f06c01b
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/documents/dom-tree-accessors/nameditem-07.html
@@ -0,0 +1,109 @@
+
+
+Named items: objects
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
diff --git a/testing/web-platform/tests/html/dom/documents/dom-tree-accessors/nameditem-08.html b/testing/web-platform/tests/html/dom/documents/dom-tree-accessors/nameditem-08.html
new file mode 100644
index 0000000000..bb024d9e78
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/documents/dom-tree-accessors/nameditem-08.html
@@ -0,0 +1,31 @@
+
+
+Named items: duplicate id attributes for object and img
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
diff --git a/testing/web-platform/tests/html/dom/documents/dom-tree-accessors/nameditem-names.html b/testing/web-platform/tests/html/dom/documents/dom-tree-accessors/nameditem-names.html
new file mode 100644
index 0000000000..3f76d85a1b
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/documents/dom-tree-accessors/nameditem-names.html
@@ -0,0 +1,101 @@
+
+
+Named items: supported property names
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+  
+  
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
+
+  
+  
+
+
+  
+  
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/dom/documents/resource-metadata-management/document-compatmode-01.html b/testing/web-platform/tests/html/dom/documents/resource-metadata-management/document-compatmode-01.html
new file mode 100644
index 0000000000..218a3fe843
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/documents/resource-metadata-management/document-compatmode-01.html
@@ -0,0 +1,13 @@
+
+document.compatMode: Standards
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
+
diff --git a/testing/web-platform/tests/html/dom/documents/resource-metadata-management/document-compatmode-02.html b/testing/web-platform/tests/html/dom/documents/resource-metadata-management/document-compatmode-02.html
new file mode 100644
index 0000000000..6da40d61ee
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/documents/resource-metadata-management/document-compatmode-02.html
@@ -0,0 +1,14 @@
+
+document.compatMode: Almost standards
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
+
diff --git a/testing/web-platform/tests/html/dom/documents/resource-metadata-management/document-compatmode-03.html b/testing/web-platform/tests/html/dom/documents/resource-metadata-management/document-compatmode-03.html
new file mode 100644
index 0000000000..3d55d6e835
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/documents/resource-metadata-management/document-compatmode-03.html
@@ -0,0 +1,12 @@
+document.compatMode: Quirks
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
+
diff --git a/testing/web-platform/tests/html/dom/documents/resource-metadata-management/document-compatmode-04.xhtml b/testing/web-platform/tests/html/dom/documents/resource-metadata-management/document-compatmode-04.xhtml
new file mode 100644
index 0000000000..a71c1d9dd3
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/documents/resource-metadata-management/document-compatmode-04.xhtml
@@ -0,0 +1,18 @@
+
+
+
+document.compatMode: Standards
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/dom/documents/resource-metadata-management/document-compatmode-05.xhtml b/testing/web-platform/tests/html/dom/documents/resource-metadata-management/document-compatmode-05.xhtml
new file mode 100644
index 0000000000..3fde06e5af
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/documents/resource-metadata-management/document-compatmode-05.xhtml
@@ -0,0 +1,19 @@
+
+
+
+document.compatMode: Standards
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/dom/documents/resource-metadata-management/document-compatmode-06.xhtml b/testing/web-platform/tests/html/dom/documents/resource-metadata-management/document-compatmode-06.xhtml
new file mode 100644
index 0000000000..eb64dfb90e
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/documents/resource-metadata-management/document-compatmode-06.xhtml
@@ -0,0 +1,17 @@
+
+
+document.compatMode: Standards
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/dom/documents/resource-metadata-management/document-cookie.html b/testing/web-platform/tests/html/dom/documents/resource-metadata-management/document-cookie.html
new file mode 100644
index 0000000000..2af65effeb
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/documents/resource-metadata-management/document-cookie.html
@@ -0,0 +1,41 @@
+
+
+document.cookie
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
diff --git a/testing/web-platform/tests/html/dom/documents/resource-metadata-management/document-lastModified-01.html b/testing/web-platform/tests/html/dom/documents/resource-metadata-management/document-lastModified-01.html
new file mode 100644
index 0000000000..4d9d870f6a
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/documents/resource-metadata-management/document-lastModified-01.html
@@ -0,0 +1,103 @@
+
+document.lastModified should return current local time
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
diff --git a/testing/web-platform/tests/html/dom/documents/resource-metadata-management/document-lastModified.html b/testing/web-platform/tests/html/dom/documents/resource-metadata-management/document-lastModified.html
new file mode 100644
index 0000000000..9e0a07d8eb
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/documents/resource-metadata-management/document-lastModified.html
@@ -0,0 +1,15 @@
+
+
+document.lastModified
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
diff --git a/testing/web-platform/tests/html/dom/documents/resource-metadata-management/document-lastModified.html.headers b/testing/web-platform/tests/html/dom/documents/resource-metadata-management/document-lastModified.html.headers
new file mode 100644
index 0000000000..377e3b52dc
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/documents/resource-metadata-management/document-lastModified.html.headers
@@ -0,0 +1 @@
+Last-Modified: Thu, 01 Jan 1970 01:23:45 GMT
diff --git a/testing/web-platform/tests/html/dom/documents/resource-metadata-management/document-readyState.html b/testing/web-platform/tests/html/dom/documents/resource-metadata-management/document-readyState.html
new file mode 100644
index 0000000000..8c91e0a001
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/documents/resource-metadata-management/document-readyState.html
@@ -0,0 +1,33 @@
+
+
+document.readyState
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
diff --git a/testing/web-platform/tests/html/dom/elements-embedded.js b/testing/web-platform/tests/html/dom/elements-embedded.js
new file mode 100644
index 0000000000..c5b4520cc6
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/elements-embedded.js
@@ -0,0 +1,156 @@
+var embeddedElements = {
+  picture: {},
+  img: {
+    // Conforming
+    alt: "string",
+    src: "url",
+    srcset: "string",
+    crossOrigin: {type: "enum", keywords: ["anonymous", "use-credentials"], nonCanon:{"": "anonymous"}, isNullable: true, defaultVal: null, invalidVal: "anonymous"},
+    useMap: "string",
+    isMap: "boolean",
+    width: {type: "unsigned long", customGetter: true},
+    height: {type: "unsigned long", customGetter: true},
+    referrerPolicy: {type: "enum", keywords: ["", "no-referrer", "no-referrer-when-downgrade", "same-origin", "origin", "strict-origin", "origin-when-cross-origin", "strict-origin-when-cross-origin", "unsafe-url"]},
+    decoding: {type: "enum", keywords: ["async", "sync", "auto"], defaultVal: "auto", invalidVal: "auto"},
+
+    // Obsolete
+    name: "string",
+    lowsrc: {type: "url"},
+    align: "string",
+    hspace: "unsigned long",
+    vspace: "unsigned long",
+    longDesc: "url",
+    border: {type: "string", treatNullAsEmptyString: true},
+  },
+  iframe: {
+    // Conforming
+    src: "url",
+    srcdoc: "string",
+    name: "string",
+    sandbox: "settable tokenlist",
+    allowFullscreen: "boolean",
+    allowUserMedia: "boolean",
+    width: "string",
+    height: "string",
+    referrerPolicy: {type: "enum", keywords: ["", "no-referrer", "no-referrer-when-downgrade", "same-origin", "origin", "strict-origin", "origin-when-cross-origin", "strict-origin-when-cross-origin", "unsafe-url"]},
+    delegateStickyUserActivation: {type: "enum", keywords: ["vibration", "media"], defaultVal: null},
+
+    // Obsolete
+    align: "string",
+    scrolling: "string",
+    frameBorder: "string",
+    longDesc: "url",
+    marginHeight: {type: "string", treatNullAsEmptyString: true},
+    marginWidth: {type: "string", treatNullAsEmptyString: true}
+  },
+  embed: {
+    // Conforming
+    src: "url",
+    type: "string",
+    width: "string",
+    height: "string",
+
+    // Obsolete
+    align: "string",
+    name: "string"
+  },
+  object: {
+    // Conforming
+    data: "url",
+    type: "string",
+    name: "string",
+    useMap: "string",
+    width: "string",
+    height: "string",
+
+    // Obsolete
+    align: "string",
+    archive: "string",
+    code: "string",
+    declare: "boolean",
+    hspace: "unsigned long",
+    standby: "string",
+    vspace: "unsigned long",
+    codeBase: "url",
+    codeType: "string",
+    border: {type: "string", treatNullAsEmptyString: true}
+  },
+  param: {
+    // Conforming
+    name: "string",
+    value: "string",
+
+    // Obsolete
+    type: "string",
+    valueType: "string"
+  },
+  video: {
+    // HTMLMediaElement
+    src: "url",
+    crossOrigin: {type: "enum", keywords: ["anonymous", "use-credentials"], nonCanon:{"": "anonymous"}, isNullable: true, defaultVal: null, invalidVal: "anonymous"},
+    // As with "keytype", we have no missing value default defined here.
+    preload: {type: "enum", keywords: ["none", "metadata", "auto"], nonCanon: {"": "auto"}, defaultVal: null},
+    autoplay: "boolean",
+    loop: "boolean",
+    controls: "boolean",
+    controlsList: {type: "tokenlist", domAttrName: "controlsList"},
+    defaultMuted: {type: "boolean", domAttrName: "muted"},
+
+    width: "unsigned long",
+    height: "unsigned long",
+    poster: "url",
+    playsInline: "boolean",
+  },
+  audio: {
+    // HTMLMediaElement
+    src: "url",
+    crossOrigin: {type: "enum", keywords: ["anonymous", "use-credentials"], nonCanon:{"": "anonymous"}, isNullable: true, defaultVal: null, invalidVal: "anonymous"},
+    // As with "keytype", we have no missing value default defined here.
+    preload: {type: "enum", keywords: ["none", "metadata", "auto"], nonCanon: {"": "auto"}, defaultVal: null},
+    autoplay: "boolean",
+    loop: "boolean",
+    controls: "boolean",
+    defaultMuted: {type: "boolean", domAttrName: "muted"}
+  },
+  source: {
+    src: "url",
+    type: "string",
+    srcset: "string",
+    sizes: "string",
+    media: "string"
+  },
+  track: {
+    kind: {type: "enum", keywords: ["subtitles", "captions", "descriptions", "chapters", "metadata"], defaultVal: "subtitles", invalidVal: "metadata"},
+    src: "url",
+    srclang: "string",
+    label: "string",
+    "default": "boolean"
+  },
+  canvas: {
+    width: {type: "unsigned long", defaultVal: 300},
+    height: {type: "unsigned long", defaultVal: 150}
+  },
+  map: {
+    name: "string"
+  },
+  area: {
+    // Conforming
+    alt: "string",
+    coords: "string",
+    shape: "string",
+    target: "string",
+    download: "string",
+    ping: "string",
+    rel: "string",
+    relList: {type: "tokenlist", domAttrName: "rel"},
+    referrerPolicy: {type: "enum", keywords: ["", "no-referrer", "no-referrer-when-downgrade", "same-origin", "origin", "strict-origin", "origin-when-cross-origin", "strict-origin-when-cross-origin", "unsafe-url"]},
+
+    // HTMLHyperlinkElementUtils
+    href: "url",
+
+    // Obsolete
+    noHref: "boolean"
+  },
+};
+
+mergeElements(embeddedElements);
diff --git a/testing/web-platform/tests/html/dom/elements-forms-weekmonth.js b/testing/web-platform/tests/html/dom/elements-forms-weekmonth.js
new file mode 100644
index 0000000000..b13a21d6d8
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/elements-forms-weekmonth.js
@@ -0,0 +1,42 @@
+var formElements = {
+  input: {
+    // Conforming
+    accept: "string",
+    alt: "string",
+    autocomplete: {type: "string", customGetter: true},
+    defaultChecked: {type: "boolean", domAttrName: "checked"},
+    dirName: "string",
+    disabled: "boolean",
+    // "formAction" has magic hard-coded in reflection.js
+    formAction: "url",
+    formEnctype: {type: "enum", keywords: ["application/x-www-form-urlencoded", "multipart/form-data", "text/plain"], invalidVal: "application/x-www-form-urlencoded"},
+    formMethod: {type: "enum", keywords: ["get", "post"], invalidVal: "get"},
+    formNoValidate: "boolean",
+    formTarget: "string",
+    height: {type: "unsigned long", customGetter: true},
+    max: "string",
+    maxLength: "limited long",
+    min: "string",
+    minLength: "limited long",
+    multiple: "boolean",
+    name: "string",
+    pattern: "string",
+    placeholder: "string",
+    readOnly: "boolean",
+    required: "boolean",
+    // https://html.spec.whatwg.org/#attr-input-size
+    size: {type: "limited unsigned long", defaultVal: 20},
+    src: "url",
+    step: "string",
+    type: {type: "enum", keywords: ["month", "week"],
+      defaultVal: "text"},
+    width: {type: "unsigned long", customGetter: true},
+    defaultValue: {type: "string", domAttrName: "value"},
+
+    // Obsolete
+    align: "string",
+    useMap: "string",
+  },
+};
+
+mergeElements(formElements);
diff --git a/testing/web-platform/tests/html/dom/elements-forms.js b/testing/web-platform/tests/html/dom/elements-forms.js
new file mode 100644
index 0000000000..c43bab9dce
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/elements-forms.js
@@ -0,0 +1,128 @@
+var formElements = {
+  form: {
+    acceptCharset: {type: "string", domAttrName: "accept-charset"},
+    // "action" has magic hard-coded in reflection.js
+    action: "url",
+    autocomplete: {type: "enum", keywords: ["on", "off"], defaultVal: "on"},
+    enctype: {type: "enum", keywords: ["application/x-www-form-urlencoded", "multipart/form-data", "text/plain"], defaultVal: "application/x-www-form-urlencoded"},
+    encoding: {type: "enum", keywords: ["application/x-www-form-urlencoded", "multipart/form-data", "text/plain"], defaultVal: "application/x-www-form-urlencoded", domAttrName: "enctype"},
+    method: {type: "enum", keywords: ["get", "post", "dialog"], defaultVal: "get"},
+    name: "string",
+    noValidate: "boolean",
+    target: "string",
+  },
+  fieldset: {
+    disabled: "boolean",
+    name: "string",
+  },
+  legend: {
+    // Obsolete
+    align: "string",
+  },
+  label: {
+    htmlFor: {type: "string", domAttrName: "for"},
+  },
+  input: {
+    // Conforming
+    accept: "string",
+    alt: "string",
+    autocomplete: {type: "string", customGetter: true},
+    defaultChecked: {type: "boolean", domAttrName: "checked"},
+    dirName: "string",
+    disabled: "boolean",
+    // "formAction" has magic hard-coded in reflection.js
+    formAction: "url",
+    formEnctype: {type: "enum", keywords: ["application/x-www-form-urlencoded", "multipart/form-data", "text/plain"], invalidVal: "application/x-www-form-urlencoded"},
+    formMethod: {type: "enum", keywords: ["get", "post"], invalidVal: "get"},
+    formNoValidate: "boolean",
+    formTarget: "string",
+    height: {type: "unsigned long", customGetter: true},
+    max: "string",
+    maxLength: "limited long",
+    min: "string",
+    minLength: "limited long",
+    multiple: "boolean",
+    name: "string",
+    pattern: "string",
+    placeholder: "string",
+    readOnly: "boolean",
+    required: "boolean",
+    // https://html.spec.whatwg.org/#attr-input-size
+    size: {type: "limited unsigned long", defaultVal: 20},
+    src: "url",
+    step: "string",
+    type: {type: "enum", keywords: ["hidden", "text", "search", "tel",
+      "url", "email", "password", "date",
+      "time", "datetime-local", "number", "range", "color", "checkbox",
+      "radio", "file", "submit", "image", "reset", "button"], defaultVal:
+      "text"},
+    width: {type: "unsigned long", customGetter: true},
+    defaultValue: {type: "string", domAttrName: "value"},
+
+    // Obsolete
+    align: "string",
+    useMap: "string",
+  },
+  button: {
+    disabled: "boolean",
+    // "formAction" has magic hard-coded in reflection.js
+    formAction: "url",
+    formEnctype: {type: "enum", keywords: ["application/x-www-form-urlencoded", "multipart/form-data", "text/plain"], invalidVal: "application/x-www-form-urlencoded"},
+    formMethod: {type: "enum", keywords: ["get", "post", "dialog"], invalidVal: "get"},
+    formNoValidate: "boolean",
+    formTarget: "string",
+    name: "string",
+    type: {type: "enum", keywords: ["submit", "reset", "button"], defaultVal: "submit"},
+    value: "string"
+  },
+  select: {
+    autocomplete: {type: "string", customGetter: true},
+    disabled: "boolean",
+    multiple: "boolean",
+    name: "string",
+    required: "boolean",
+    size: {type: "unsigned long", defaultVal: 0},
+  },
+  datalist: {},
+  optgroup: {
+    disabled: "boolean",
+    label: "string",
+  },
+  option: {
+    disabled: "boolean",
+    label: {type: "string", customGetter: true},
+    defaultSelected: {type: "boolean", domAttrName: "selected"},
+    value: {type: "string", customGetter: true},
+  },
+  textarea: {
+    autocomplete: {type: "string", customGetter: true},
+    cols: {type: "limited unsigned long with fallback", defaultVal: 20},
+    dirName: "string",
+    disabled: "boolean",
+    maxLength: "limited long",
+    minLength: "limited long",
+    name: "string",
+    placeholder: "string",
+    readOnly: "boolean",
+    required: "boolean",
+    rows: {type: "limited unsigned long with fallback", defaultVal: 2},
+    wrap: "string",
+  },
+  output: {
+    htmlFor: {type: "settable tokenlist", domAttrName: "for" },
+    name: "string",
+  },
+  progress: {
+    max: {type: "limited double", defaultVal: 1.0},
+  },
+  meter: {
+    value: {type: "double", customGetter: true},
+    min: {type: "double", customGetter: true},
+    max: {type: "double", customGetter: true},
+    low: {type: "double", customGetter: true},
+    high: {type: "double", customGetter: true},
+    optimum: {type: "double", customGetter: true},
+  },
+};
+
+mergeElements(formElements);
diff --git a/testing/web-platform/tests/html/dom/elements-grouping.js b/testing/web-platform/tests/html/dom/elements-grouping.js
new file mode 100644
index 0000000000..4c9a29131a
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/elements-grouping.js
@@ -0,0 +1,57 @@
+var groupingElements = {
+  p: {
+    // Obsolete
+    align: "string",
+  },
+  hr: {
+    // Obsolete
+    align: "string",
+    color: "string",
+    noShade: "boolean",
+    size: "string",
+    width: "string",
+  },
+  pre: {
+    // Obsolete
+    width: "long",
+  },
+  blockquote: {
+    cite: "url",
+  },
+  ol: {
+    // Conforming
+    reversed: "boolean",
+    start: {type: "long", defaultVal: 1},
+    type: "string",
+
+    // Obsolete
+    compact: "boolean",
+  },
+  ul: {
+    // Obsolete
+    compact: "boolean",
+    type: "string",
+  },
+  li: {
+    // Conforming
+    value: "long",
+
+    // Obsolete
+    type: "string",
+  },
+  dl: {
+    // Obsolete
+    compact: "boolean",
+  },
+  dt: {},
+  dd: {},
+  figure: {},
+  figcaption: {},
+  main: {},
+  div: {
+    // Obsolete
+    align: "string",
+  },
+};
+
+mergeElements(groupingElements);
diff --git a/testing/web-platform/tests/html/dom/elements-metadata.js b/testing/web-platform/tests/html/dom/elements-metadata.js
new file mode 100644
index 0000000000..49d7bb25ad
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/elements-metadata.js
@@ -0,0 +1,50 @@
+var metadataElements = {
+  head: {},
+  title: {},
+  base: {
+    href: {type: "url", customGetter: true},
+    target: "string",
+  },
+  link: {
+    // Conforming
+    href: "url",
+    crossOrigin: {type: "enum", keywords: ["anonymous", "use-credentials"], nonCanon:{"": "anonymous"}, isNullable: true, defaultVal: null, invalidVal: "anonymous"},
+    rel: "string",
+    as: {
+      type: "enum",
+      keywords: ["fetch", "audio", "document", "embed", "font", "image", "manifest", "object", "report", "script", "sharedworker", "style", "track", "video", "worker", "xslt"],
+      defaultVal: "",
+      invalidVal: ""
+    },
+    relList: {type: "tokenlist", domAttrName: "rel"},
+    media: "string",
+    nonce: "string",
+    integrity: "string",
+    hreflang: "string",
+    type: "string",
+    sizes: "settable tokenlist",
+    referrerPolicy: {type: "enum", keywords: ["", "no-referrer", "no-referrer-when-downgrade", "same-origin", "origin", "strict-origin", "origin-when-cross-origin", "strict-origin-when-cross-origin", "unsafe-url"]},
+
+    // Obsolete
+    charset: "string",
+    rev: "string",
+    target: "string",
+  },
+  meta: {
+    // Conforming
+    name: "string",
+    httpEquiv: {type: "string", domAttrName: "http-equiv"},
+    content: "string",
+    media: "string",
+
+    // Obsolete
+    scheme: "string",
+  },
+  style: {
+    media: "string",
+    nonce: "string",
+    type: "string",
+  },
+};
+
+mergeElements(metadataElements);
diff --git a/testing/web-platform/tests/html/dom/elements-misc.js b/testing/web-platform/tests/html/dom/elements-misc.js
new file mode 100644
index 0000000000..1a74c54797
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/elements-misc.js
@@ -0,0 +1,60 @@
+var miscElements = {
+  // "The root element" section
+  html: {
+    // Obsolete
+    version: "string",
+  },
+
+  // "Scripting" section
+  script: {
+    src: "url",
+    type: "string",
+    noModule: "boolean",
+    charset: "string",
+    // TODO: async attribute (complicated).
+    defer: "boolean",
+    crossOrigin: {type: "enum", keywords: ["anonymous", "use-credentials"], nonCanon:{"": "anonymous"}, isNullable: true, defaultVal: null, invalidVal: "anonymous"},
+    integrity: "string",
+
+    // Obsolete
+    event: "string",
+    htmlFor: {type: "string", domAttrName: "for"},
+  },
+  noscript: {},
+
+  template: {},
+  slot: {
+    name: "string",
+  },
+
+  // "Edits" section
+  ins: {
+    cite: "url",
+    dateTime: "string",
+  },
+  del: {
+    cite: "url",
+    dateTime: "string",
+  },
+
+  // "Interactive elements" section
+  details: {
+    open: "boolean",
+  },
+  summary: {},
+  menu: {
+    // Obsolete
+    compact: "boolean",
+  },
+  dialog: {
+    open: "boolean",
+  },
+
+  // Global attributes should exist even on unknown elements
+  undefinedelement: {
+    enterKeyHint: {type: "enum", keywords: ["enter", "done", "go", "next", "previous", "search", "send"]},
+    inputMode: {type: "enum", keywords: ["none", "text", "tel", "url", "email", "numeric", "decimal", "search"]},
+  },
+};
+
+mergeElements(miscElements);
diff --git a/testing/web-platform/tests/html/dom/elements-obsolete.js b/testing/web-platform/tests/html/dom/elements-obsolete.js
new file mode 100644
index 0000000000..3ef9e9f997
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/elements-obsolete.js
@@ -0,0 +1,50 @@
+var obsoleteElements = {
+  marquee: {
+    behavior: {
+      type: {
+        type: "enum",
+        keywords: ["scroll", "slide", "alternate"],
+        defaultVal: "scroll"
+      },
+    },
+    bgColor: "string",
+    direction: {
+      type: {
+        type: "enum",
+        keywords: ["up", "right", "down", "left"],
+        defaultVal: "left"
+      },
+    },
+    height: "string",
+    hspace: "unsigned long",
+    scrollAmount: {type: "unsigned long", defaultVal: 6},
+    scrollDelay: {type: "unsigned long", defaultVal: 85},
+    trueSpeed: "boolean",
+    vspace: "unsigned long",
+    width: "string",
+  },
+  frameset: {
+    cols: "string",
+    rows: "string",
+  },
+  frame: {
+    name: "string",
+    scrolling: "string",
+    src: "url",
+    frameBorder: "string",
+    longDesc: "url",
+    noResize: "boolean",
+    marginHeight: {type: "string", treatNullAsEmptyString: true},
+    marginWidth: {type: "string", treatNullAsEmptyString: true},
+  },
+  dir: {
+    compact: "boolean",
+  },
+  font: {
+    color: {type: "string", treatNullAsEmptyString: true},
+    face: "string",
+    size: "string",
+  },
+};
+
+mergeElements(obsoleteElements);
diff --git a/testing/web-platform/tests/html/dom/elements-sections.js b/testing/web-platform/tests/html/dom/elements-sections.js
new file mode 100644
index 0000000000..bbad85e513
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/elements-sections.js
@@ -0,0 +1,64 @@
+var sectionElements = {
+  body: {
+    // Obsolete
+    text: {type: "string", treatNullAsEmptyString: true},
+    link: {type: "string", treatNullAsEmptyString: true},
+    vLink: {type: "string", treatNullAsEmptyString: true},
+    aLink: {type: "string", treatNullAsEmptyString: true},
+    bgColor: {type: "string", treatNullAsEmptyString: true},
+    background: "string",
+  },
+  article: {},
+  section: {},
+  nav: {},
+  aside: {},
+  h1: {
+    // Obsolete
+    align: "string",
+  },
+  h2: {
+    // Obsolete
+    align: "string",
+  },
+  h3: {
+    // Obsolete
+    align: "string",
+  },
+  h4: {
+    // Obsolete
+    align: "string",
+  },
+  h5: {
+    // Obsolete
+    align: "string",
+  },
+  h6: {
+    // Obsolete
+    align: "string",
+  },
+  hgroup: {},
+  header: {},
+  footer: {},
+  address: {},
+};
+
+mergeElements(sectionElements);
+
+extraTests.push(function() {
+  ReflectionTests.reflects({type: "enum", keywords: ["ltr", "rtl", "auto"]}, "dir", document, "dir", document.documentElement);
+  // TODO: these behave differently if the body element is a frameset.  Also
+  // should probably test with multiple bodies.
+  ReflectionTests.reflects({type: "string", treatNullAsEmptyString: true}, "fgColor", document, "text", document.body);
+  ReflectionTests.reflects({type: "string", treatNullAsEmptyString: true}, "linkColor", document, "link", document.body);
+  ReflectionTests.reflects({type: "string", treatNullAsEmptyString: true}, "vlinkColor", document, "vlink", document.body);
+  ReflectionTests.reflects({type: "string", treatNullAsEmptyString: true}, "alinkColor", document, "alink", document.body);
+  ReflectionTests.reflects({type: "string", treatNullAsEmptyString: true}, "bgColor", document, "bgcolor", document.body);
+  // Edge remains RTL if we don't do this, despite removing the attribute
+  document.dir = "ltr";
+  // Don't mess up the colors :)
+  document.documentElement.removeAttribute("dir");
+  var attrs = ["text", "bgcolor", "link", "alink", "vlink"];
+  for (var i = 0; i < attrs.length; i++) {
+    document.body.removeAttribute(attrs[i]);
+  }
+});
diff --git a/testing/web-platform/tests/html/dom/elements-tabular.js b/testing/web-platform/tests/html/dom/elements-tabular.js
new file mode 100644
index 0000000000..88fc8d31ec
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/elements-tabular.js
@@ -0,0 +1,109 @@
+// Up-to-date as of 2013-04-12.
+var tabularElements = {
+  table: {
+    // Obsolete
+    align: "string",
+    border: "string",
+    frame: "string",
+    rules: "string",
+    summary: "string",
+    width: "string",
+    bgColor: {type: "string", treatNullAsEmptyString: true},
+    cellPadding: {type: "string", treatNullAsEmptyString: true},
+    cellSpacing: {type: "string", treatNullAsEmptyString: true},
+  },
+  caption: {
+    // Obsolete
+    align: "string",
+  },
+  colgroup: {
+    span: {type: "clamped unsigned long", defaultVal: 1, min: 1, max: 1000},
+
+    // Obsolete
+    align: "string",
+    ch: {type: "string", domAttrName: "char"},
+    chOff: {type: "string", domAttrName: "charoff"},
+    vAlign: "string",
+    width: "string",
+  },
+  col: {
+    // Conforming
+    span: {type: "clamped unsigned long", defaultVal: 1, min: 1, max: 1000},
+
+    // Obsolete
+    align: "string",
+    ch: {type: "string", domAttrName: "char"},
+    chOff: {type: "string", domAttrName: "charoff"},
+    vAlign: "string",
+    width: "string",
+  },
+  tbody: {
+    // Obsolete
+    align: "string",
+    ch: {type: "string", domAttrName: "char"},
+    chOff: {type: "string", domAttrName: "charoff"},
+    vAlign: "string",
+  },
+  thead: {
+    // Obsolete
+    align: "string",
+    ch: {type: "string", domAttrName: "char"},
+    chOff: {type: "string", domAttrName: "charoff"},
+    vAlign: "string",
+  },
+  tfoot: {
+    // Obsolete
+    align: "string",
+    ch: {type: "string", domAttrName: "char"},
+    chOff: {type: "string", domAttrName: "charoff"},
+    vAlign: "string",
+  },
+  tr: {
+    // Obsolete
+    align: "string",
+    ch: {type: "string", domAttrName: "char"},
+    chOff: {type: "string", domAttrName: "charoff"},
+    vAlign: "string",
+    bgColor: {type: "string", treatNullAsEmptyString: true},
+  },
+  td: {
+    // HTMLTableCellElement (Conforming)
+    colSpan: {type: "clamped unsigned long", defaultVal: 1, min: 1, max: 1000},
+    rowSpan: {type: "clamped unsigned long", defaultVal: 1, min: 0, max: 65534},
+    headers: "string",
+    scope: {type: "enum", keywords: ["row", "col", "rowgroup", "colgroup"]},
+    abbr: "string",
+
+    // HTMLTableCellElement (Obsolete)
+    align: "string",
+    axis: "string",
+    height: "string",
+    width: "string",
+    ch: {type: "string", domAttrName: "char"},
+    chOff: {type: "string", domAttrName: "charoff"},
+    noWrap: "boolean",
+    vAlign: "string",
+    bgColor: {type: "string", treatNullAsEmptyString: true},
+  },
+  th: {
+    // HTMLTableCellElement (Conforming)
+    colSpan: {type: "clamped unsigned long", defaultVal: 1, min: 1, max: 1000},
+    rowSpan: {type: "clamped unsigned long", defaultVal: 1, min: 0, max: 65534},
+    headers: "string",
+    scope: {type: "enum", keywords: ["row", "col", "rowgroup", "colgroup"]},
+    abbr: "string",
+
+    // HTMLTableCellElement (Obsolete)
+    align: "string",
+    axis: "string",
+    height: "string",
+    width: "string",
+    ch: {type: "string", domAttrName: "char"},
+    chOff: {type: "string", domAttrName: "charoff"},
+    noWrap: "boolean",
+    vAlign: "string",
+    bgColor: {type: "string", treatNullAsEmptyString: true},
+  },
+};
+
+mergeElements(tabularElements);
diff --git a/testing/web-platform/tests/html/dom/elements-text.js b/testing/web-platform/tests/html/dom/elements-text.js
new file mode 100644
index 0000000000..f71df48ee3
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/elements-text.js
@@ -0,0 +1,63 @@
+// Up-to-date as of 2013-04-19.
+var textElements = {
+  a: {
+    // Conforming
+    target: "string",
+    download: "string",
+    ping: "string",
+    rel: "string",
+    relList: {type: "tokenlist", domAttrName: "rel"},
+    hreflang: "string",
+    type: "string",
+    referrerPolicy: {type: "enum", keywords: ["", "no-referrer", "no-referrer-when-downgrade", "same-origin", "origin", "strict-origin", "origin-when-cross-origin", "strict-origin-when-cross-origin", "unsafe-url"]},
+
+    // HTMLHyperlinkElementUtils
+    href: "url",
+
+    // Obsolete
+    coords: "string",
+    charset: "string",
+    name: "string",
+    rev: "string",
+    shape: "string",
+  },
+  em: {},
+  strong: {},
+  small: {},
+  s: {},
+  cite: {},
+  q: {
+    cite: "url",
+  },
+  dfn: {},
+  abbr: {},
+  ruby: {},
+  rt: {},
+  rp: {},
+  data: {
+    value: "string",
+  },
+  time: {
+    dateTime: "string",
+  },
+  code: {},
+  var: {},
+  samp: {},
+  kbd: {},
+  sub: {},
+  sup: {},
+  i: {},
+  b: {},
+  u: {},
+  mark: {},
+  bdi: {},
+  bdo: {},
+  span: {},
+  br: {
+    // Obsolete
+    clear: "string",
+  },
+  wbr: {},
+};
+
+mergeElements(textElements);
diff --git a/testing/web-platform/tests/html/dom/elements/elements-in-the-dom/historical.html b/testing/web-platform/tests/html/dom/elements/elements-in-the-dom/historical.html
new file mode 100644
index 0000000000..078ce29cc0
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/elements/elements-in-the-dom/historical.html
@@ -0,0 +1,24 @@
+
+Historical HTMLElement features
+
+
+
+
diff --git a/testing/web-platform/tests/html/dom/elements/elements-in-the-dom/unknown-element.html b/testing/web-platform/tests/html/dom/elements/elements-in-the-dom/unknown-element.html
new file mode 100644
index 0000000000..16a53e5e88
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/elements/elements-in-the-dom/unknown-element.html
@@ -0,0 +1,22 @@
+
+HTMLUnknownElement
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
diff --git a/testing/web-platform/tests/html/dom/elements/global-attributes/.htaccess b/testing/web-platform/tests/html/dom/elements/global-attributes/.htaccess
new file mode 100644
index 0000000000..94e9a4f190
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/elements/global-attributes/.htaccess
@@ -0,0 +1,16 @@
+AddType 'text/html; charset=UTF-8' html
+
+AddLanguage 'ko' .html
+
+
+AddLanguage 'zh' .html
+
+
+AddLanguage 'zh' .html
+
+
+AddLanguage 'ko' .html
+
+
+AddLanguage 'ko,zh,ja' .html
+
diff --git a/testing/web-platform/tests/html/dom/elements/global-attributes/classlist-nonstring.html b/testing/web-platform/tests/html/dom/elements/global-attributes/classlist-nonstring.html
new file mode 100644
index 0000000000..044f5e8b1b
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/elements/global-attributes/classlist-nonstring.html
@@ -0,0 +1,44 @@
+
+classList: non-string contains
+
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  • 
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  • 
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  • 
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  • 
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  • 
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  • 
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
diff --git a/testing/web-platform/tests/html/dom/elements/global-attributes/custom-attrs.html b/testing/web-platform/tests/html/dom/elements/global-attributes/custom-attrs.html
new file mode 100644
index 0000000000..a1e41dac25
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/elements/global-attributes/custom-attrs.html
@@ -0,0 +1,29 @@
+
+
+    
+        Element Custom Attributes
+        
+        
+        
+        
+        
+        
+    
+    
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Element Custom Attributes
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
+    
+
diff --git a/testing/web-platform/tests/html/dom/elements/global-attributes/data_unicode_attr.html b/testing/web-platform/tests/html/dom/elements/global-attributes/data_unicode_attr.html
new file mode 100644
index 0000000000..17077dafd1
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/elements/global-attributes/data_unicode_attr.html
@@ -0,0 +1,22 @@
+
+
+HTML Test: dataset attribute
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
diff --git a/testing/web-platform/tests/html/dom/elements/global-attributes/dataset-binding.window.js b/testing/web-platform/tests/html/dom/elements/global-attributes/dataset-binding.window.js
new file mode 100644
index 0000000000..e0e85677d1
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/elements/global-attributes/dataset-binding.window.js
@@ -0,0 +1,45 @@
+[9, "x"].forEach(function(key) {
+  test(function() {
+    var element = document.createElement("div");
+    var dataset = element.dataset;
+
+    var value = "value for " + this.name;
+
+    assert_equals(dataset[key], undefined);
+
+    element.setAttribute("data-" + key, value);
+    assert_equals(element.getAttribute("data-" + key), value);
+    assert_equals(dataset[key], value);
+
+    var propdesc = Object.getOwnPropertyDescriptor(dataset, key);
+    assert_not_equals(propdesc, undefined);
+    assert_equals(propdesc.value, value);
+    assert_true(propdesc.writable);
+    assert_true(propdesc.enumerable);
+    assert_true(propdesc.configurable);
+  }, "Getting property descriptor for key " + key);
+
+  test(function() {
+    var element = document.createElement("div");
+    var dataset = element.dataset;
+
+    var proto = "proto getter for " + this.name;
+    var calledSetter = [];
+    Object.defineProperty(DOMStringMap.prototype, key, {
+      "get": function() { return proto; },
+      "set": this.unreached_func("Should not call [[Set]] on prototype"),
+      "configurable": true,
+    });
+    this.add_cleanup(function() {
+      delete DOMStringMap.prototype[key];
+    });
+
+    var value = "value for " + this.name;
+
+    assert_equals(dataset[key], proto);
+    assert_equals(element.getAttribute("data-" + key), null);
+    assert_equals(dataset[key] = value, value);
+    assert_equals(dataset[key], value);
+    assert_equals(element.getAttribute("data-" + key), value);
+  }, "Setting property for key " + key + " with accessor property on prototype");
+});
diff --git a/testing/web-platform/tests/html/dom/elements/global-attributes/dataset-delete.html b/testing/web-platform/tests/html/dom/elements/global-attributes/dataset-delete.html
new file mode 100644
index 0000000000..1440118f6d
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/elements/global-attributes/dataset-delete.html
@@ -0,0 +1,54 @@
+
+
+  
+    Dataset - Delete
+    
+    
+  
+  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Dataset - Delete
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
+  
+
diff --git a/testing/web-platform/tests/html/dom/elements/global-attributes/dataset-enumeration.html b/testing/web-platform/tests/html/dom/elements/global-attributes/dataset-enumeration.html
new file mode 100644
index 0000000000..4b1063379c
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/elements/global-attributes/dataset-enumeration.html
@@ -0,0 +1,31 @@
+
+
+  
+    Dataset - Enumeration
+    
+    
+  
+  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Dataset - Enumeration
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
+  
+
diff --git a/testing/web-platform/tests/html/dom/elements/global-attributes/dataset-get.html b/testing/web-platform/tests/html/dom/elements/global-attributes/dataset-get.html
new file mode 100644
index 0000000000..ab4078c4fb
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/elements/global-attributes/dataset-get.html
@@ -0,0 +1,57 @@
+
+
+  
+    Dataset - Get
+    
+    
+  
+  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Dataset - Get
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
+  
+
diff --git a/testing/web-platform/tests/html/dom/elements/global-attributes/dataset-prototype.html b/testing/web-platform/tests/html/dom/elements/global-attributes/dataset-prototype.html
new file mode 100644
index 0000000000..6b16618461
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/elements/global-attributes/dataset-prototype.html
@@ -0,0 +1,26 @@
+
+
+  
+    Dataset - element.dataset is an instance of DOMStringMap
+    
+    
+  
+  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Dataset - element.dataset is an instance of DOMStringMap
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
+  
+
diff --git a/testing/web-platform/tests/html/dom/elements/global-attributes/dataset-set.html b/testing/web-platform/tests/html/dom/elements/global-attributes/dataset-set.html
new file mode 100644
index 0000000000..a5bc177f50
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/elements/global-attributes/dataset-set.html
@@ -0,0 +1,44 @@
+
+
+  
+    Dataset - Set
+    
+    
+  
+  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Dataset - Set
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
+  
+
diff --git a/testing/web-platform/tests/html/dom/elements/global-attributes/dataset.html b/testing/web-platform/tests/html/dom/elements/global-attributes/dataset.html
new file mode 100644
index 0000000000..a4a16d014d
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/elements/global-attributes/dataset.html
@@ -0,0 +1,38 @@
+
+dataset: should exist and work on HTML and SVG elements, but not random elements
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
diff --git a/testing/web-platform/tests/html/dom/elements/global-attributes/dir-auto-div-append-child.html b/testing/web-platform/tests/html/dom/elements/global-attributes/dir-auto-div-append-child.html
new file mode 100644
index 0000000000..e69f64b3a9
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/elements/global-attributes/dir-auto-div-append-child.html
@@ -0,0 +1,18 @@
+
+HTML Test: input with dir=auto, then append a child
+
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
diff --git a/testing/web-platform/tests/html/dom/elements/global-attributes/dir-bdi-script.html b/testing/web-platform/tests/html/dom/elements/global-attributes/dir-bdi-script.html
new file mode 100644
index 0000000000..3008043093
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/elements/global-attributes/dir-bdi-script.html
@@ -0,0 +1,24 @@
+
+HTML Test: BDI: script adds a bdi element with R text and the direction should be RTL
+
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  اختبر SomeText
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
\ No newline at end of file
diff --git a/testing/web-platform/tests/html/dom/elements/global-attributes/dir-slots-directionality.tentative.html b/testing/web-platform/tests/html/dom/elements/global-attributes/dir-slots-directionality.tentative.html
new file mode 100644
index 0000000000..1f0dc07f8e
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/elements/global-attributes/dir-slots-directionality.tentative.html
@@ -0,0 +1,38 @@
+
+HTML Test: dir=auto|rtl with slots, and direction should be RTL
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  اختبر
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
diff --git a/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-EN-L-ref.html b/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-EN-L-ref.html
new file mode 100644
index 0000000000..de6e13b3a3
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-EN-L-ref.html
@@ -0,0 +1,57 @@
+
+
+  
+    
+    HTML Test: dir=auto, start with EN, then L
+    
+    
+    
+    
+    
+    
+  
+  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Test passes if the two boxes below look exactly the same.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      Key to entities used below:
+      א - The Hebrew letter Alef (strongly RTL).
+      ב - The Hebrew letter Bet (strongly RTL).
+      ג - The Hebrew letter Gimel (strongly RTL).
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  123ABCאבג.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  123ABCאבג.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  123ABCאבג.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  123ABCאבג.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+  
+
diff --git a/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-EN-L.html b/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-EN-L.html
new file mode 100644
index 0000000000..fa8d793bd0
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-EN-L.html
@@ -0,0 +1,58 @@
+
+
+  
+    
+    HTML Test: dir=auto, start with EN, then L
+    
+    
+    
+    
+    
+    
+    
+  
+  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Test passes if the two boxes below look exactly the same.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      Key to entities used below:
+      א - The Hebrew letter Alef (strongly RTL).
+      ב - The Hebrew letter Bet (strongly RTL).
+      ג - The Hebrew letter Gimel (strongly RTL).
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  123ABCאבג.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  123ABCאבג.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  123ABCאבג.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  123ABCאבג.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+  
+
diff --git a/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-EN-R-ref.html b/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-EN-R-ref.html
new file mode 100644
index 0000000000..15bd618dc1
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-EN-R-ref.html
@@ -0,0 +1,57 @@
+
+
+  
+    
+    HTML Test: dir=auto, start with EN, then R
+    
+    
+    
+    
+    
+    
+  
+  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Test passes if the two boxes below look exactly the same.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      Key to entities used below:
+      א - The Hebrew letter Alef (strongly RTL).
+      ב - The Hebrew letter Bet (strongly RTL).
+      ג - The Hebrew letter Gimel (strongly RTL).
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  123אבגABC.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  123אבגABC.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  123אבגABC.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  123אבגABC.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+  
+
diff --git a/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-EN-R.html b/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-EN-R.html
new file mode 100644
index 0000000000..7165de583d
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-EN-R.html
@@ -0,0 +1,58 @@
+
+
+  
+    
+    HTML Test: dir=auto, start with EN, then R
+    
+    
+    
+    
+    
+    
+    
+  
+  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Test passes if the two boxes below look exactly the same.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      Key to entities used below:
+      א - The Hebrew letter Alef (strongly RTL).
+      ב - The Hebrew letter Bet (strongly RTL).
+      ג - The Hebrew letter Gimel (strongly RTL).
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  123אבגABC.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  123אבגABC.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  123אבגABC.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  123אבגABC.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+  
+
diff --git a/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-L-ref.html b/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-L-ref.html
new file mode 100644
index 0000000000..23da64ed9b
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-L-ref.html
@@ -0,0 +1,57 @@
+
+
+  
+    
+    HTML Test: dir=auto, start with L
+    
+    
+    
+    
+    
+    
+  
+  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Test passes if the two boxes below look exactly the same.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      Key to entities used below:
+      א - The Hebrew letter Alef (strongly RTL).
+      ב - The Hebrew letter Bet (strongly RTL).
+      ג - The Hebrew letter Gimel (strongly RTL).
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ABCאבג.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ABCאבג.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ABCאבג.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ABCאבג.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+  
+
diff --git a/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-L.html b/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-L.html
new file mode 100644
index 0000000000..3896bcb76b
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-L.html
@@ -0,0 +1,58 @@
+
+
+  
+    
+    HTML Test: dir=auto, start with L
+    
+    
+    
+    
+    
+    
+    
+  
+  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Test passes if the two boxes below look exactly the same.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      Key to entities used below:
+      א - The Hebrew letter Alef (strongly RTL).
+      ב - The Hebrew letter Bet (strongly RTL).
+      ג - The Hebrew letter Gimel (strongly RTL).
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ABCאבג.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ABCאבג.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ABCאבג.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ABCאבג.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+  
+
diff --git a/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-N-EN-L-ref.html b/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-N-EN-L-ref.html
new file mode 100644
index 0000000000..c7977d189f
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-N-EN-L-ref.html
@@ -0,0 +1,57 @@
+
+
+  
+    
+    HTML Test: dir=auto, start with N, then EN, then L
+    
+    
+    
+    
+    
+    
+  
+  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Test passes if the two boxes below look exactly the same.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      Key to entities used below:
+      א - The Hebrew letter Alef (strongly RTL).
+      ב - The Hebrew letter Bet (strongly RTL).
+      ג - The Hebrew letter Gimel (strongly RTL).
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  .-=123ABCאבג.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  .-=123ABCאבג.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  .-=123ABCאבג.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  .-=123ABCאבג.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+  
+
diff --git a/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-N-EN-L.html b/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-N-EN-L.html
new file mode 100644
index 0000000000..21ca0338dc
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-N-EN-L.html
@@ -0,0 +1,58 @@
+
+
+  
+    
+    HTML Test: dir=auto, start with N, then EN, then L
+    
+    
+    
+    
+    
+    
+    
+  
+  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Test passes if the two boxes below look exactly the same.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      Key to entities used below:
+      א - The Hebrew letter Alef (strongly RTL).
+      ב - The Hebrew letter Bet (strongly RTL).
+      ג - The Hebrew letter Gimel (strongly RTL).
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  .-=123ABCאבג.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  .-=123ABCאבג.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  .-=123ABCאבג.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  .-=123ABCאבג.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+  
+
diff --git a/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-N-EN-R-ref.html b/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-N-EN-R-ref.html
new file mode 100644
index 0000000000..aae50bc721
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-N-EN-R-ref.html
@@ -0,0 +1,57 @@
+
+
+  
+    
+    HTML Test: dir=auto, start with N, then EN, then R
+    
+    
+    
+    
+    
+    
+  
+  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Test passes if the two boxes below look exactly the same.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      Key to entities used below:
+      א - The Hebrew letter Alef (strongly RTL).
+      ב - The Hebrew letter Bet (strongly RTL).
+      ג - The Hebrew letter Gimel (strongly RTL).
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  .-=123אבגABC.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  .-=123אבגABC.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  .-=123אבגABC.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  .-=123אבגABC.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+  
+
diff --git a/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-N-EN-R.html b/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-N-EN-R.html
new file mode 100644
index 0000000000..b10a52b1a8
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-N-EN-R.html
@@ -0,0 +1,58 @@
+
+
+  
+    
+    HTML Test: dir=auto, start with N, then EN, then R
+    
+    
+    
+    
+    
+    
+    
+  
+  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Test passes if the two boxes below look exactly the same.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      Key to entities used below:
+      א - The Hebrew letter Alef (strongly RTL).
+      ב - The Hebrew letter Bet (strongly RTL).
+      ג - The Hebrew letter Gimel (strongly RTL).
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  .-=123אבגABC.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  .-=123אבגABC.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  .-=123אבגABC.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  .-=123אבגABC.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+  
+
diff --git a/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-N-EN-ref.html b/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-N-EN-ref.html
new file mode 100644
index 0000000000..154d56aaf9
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-N-EN-ref.html
@@ -0,0 +1,51 @@
+
+
+  
+    
+    HTML Test: dir=auto, start with N, then EN, then L
+    
+    
+    
+    
+    
+    
+    
+  
+  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Test passes if the two boxes below look exactly the same.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  @123!
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  @123!
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  @123!
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  @123!
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+  
+
diff --git a/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-N-EN.html b/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-N-EN.html
new file mode 100644
index 0000000000..5d948d3456
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-N-EN.html
@@ -0,0 +1,51 @@
+
+
+  
+    
+    HTML Test: dir=auto, start with N, then EN, then L
+    
+    
+    
+    
+    
+    
+    
+  
+  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Test passes if the two boxes below look exactly the same.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  @123!
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  @123!
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  @123!
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  @123!
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+  
+
diff --git a/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-N-L-ref.html b/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-N-L-ref.html
new file mode 100644
index 0000000000..4bbaca1e31
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-N-L-ref.html
@@ -0,0 +1,57 @@
+
+
+  
+    
+    HTML Test: dir=auto, start with N, then L
+    
+    
+    
+    
+    
+    
+  
+  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Test passes if the two boxes below look exactly the same.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      Key to entities used below:
+      א - The Hebrew letter Alef (strongly RTL).
+      ב - The Hebrew letter Bet (strongly RTL).
+      ג - The Hebrew letter Gimel (strongly RTL).
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  .-=ABCאבג.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  .-=ABCאבג.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  .-=ABCאבג.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  .-=ABCאבג.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+  
+
diff --git a/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-N-L.html b/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-N-L.html
new file mode 100644
index 0000000000..945fa06779
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-N-L.html
@@ -0,0 +1,58 @@
+
+
+  
+    
+    HTML Test: dir=auto, start with N, then L
+    
+    
+    
+    
+    
+    
+    
+  
+  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Test passes if the two boxes below look exactly the same.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      Key to entities used below:
+      א - The Hebrew letter Alef (strongly RTL).
+      ב - The Hebrew letter Bet (strongly RTL).
+      ג - The Hebrew letter Gimel (strongly RTL).
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  .-=ABCאבג.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  .-=ABCאבג.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  .-=ABCאבג.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  .-=ABCאבג.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+  
+
diff --git a/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-N-R-ref.html b/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-N-R-ref.html
new file mode 100644
index 0000000000..7a1daeddde
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-N-R-ref.html
@@ -0,0 +1,57 @@
+
+
+  
+    
+    HTML Test: dir=auto, start with N, then R
+    
+    
+    
+    
+    
+    
+  
+  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Test passes if the two boxes below look exactly the same.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      Key to entities used below:
+      א - The Hebrew letter Alef (strongly RTL).
+      ב - The Hebrew letter Bet (strongly RTL).
+      ג - The Hebrew letter Gimel (strongly RTL).
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  .-=אבגABC.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  .-=אבגABC.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  .-=אבגABC.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  .-=אבגABC.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+  
+
diff --git a/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-N-R.html b/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-N-R.html
new file mode 100644
index 0000000000..bf27a16a22
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-N-R.html
@@ -0,0 +1,58 @@
+
+
+  
+    
+    HTML Test: dir=auto, start with N, then R
+    
+    
+    
+    
+    
+    
+    
+  
+  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Test passes if the two boxes below look exactly the same.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      Key to entities used below:
+      א - The Hebrew letter Alef (strongly RTL).
+      ב - The Hebrew letter Bet (strongly RTL).
+      ג - The Hebrew letter Gimel (strongly RTL).
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  .-=אבגABC.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  .-=אבגABC.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  .-=אבגABC.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  .-=אבגABC.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+  
+
diff --git a/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-R-ref.html b/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-R-ref.html
new file mode 100644
index 0000000000..c9dc5301b4
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-R-ref.html
@@ -0,0 +1,58 @@
+
+
+  
+    
+    HTML Test: dir=auto, start with R
+    
+    
+    
+    
+    
+    
+  
+  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Test passes if the two boxes below look exactly the same.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      Key to entities used below:
+      א - The Hebrew letter Alef (strongly RTL).
+      ב - The Hebrew letter Bet (strongly RTL).
+      ג - The Hebrew letter Gimel (strongly RTL).
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  אבגABC.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  אבגABC.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  אבגABC.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  אבגABC.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+  
+
diff --git a/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-R.html b/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-R.html
new file mode 100644
index 0000000000..69a62fc637
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-R.html
@@ -0,0 +1,58 @@
+
+
+  
+    
+    HTML Test: dir=auto, start with R
+    
+    
+    
+    
+    
+    
+    
+  
+  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Test passes if the two boxes below look exactly the same.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      Key to entities used below:
+      א - The Hebrew letter Alef (strongly RTL).
+      ב - The Hebrew letter Bet (strongly RTL).
+      ג - The Hebrew letter Gimel (strongly RTL).
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  אבגABC.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  אבגABC.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  אבגABC.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  אבגABC.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+  
+
diff --git a/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-contained-L-ref.html b/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-contained-L-ref.html
new file mode 100644
index 0000000000..4e42a11a91
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-contained-L-ref.html
@@ -0,0 +1,61 @@
+
+
+  
+    
+    HTML Test: dir=auto, start with L within contained element
+    
+    
+    
+    
+    
+    
+  
+  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Test passes if the two boxes below look exactly the same.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      Key to entities used below:
+      א - The Hebrew letter Alef (strongly RTL).
+      ב - The Hebrew letter Bet (strongly RTL).
+      ג - The Hebrew letter Gimel (strongly RTL).
+      ד - The Hebrew letter Dalet (strongly RTL).
+      ה - The Hebrew letter He (strongly RTL).
+      ו - The Hebrew letter Vav (strongly RTL).
+      ז - The Hebrew letter Zayin (strongly RTL).
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ABCאבג.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  דה
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ו
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ABCאבג.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  דה
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ו
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ABCאבג.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  דה
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ו
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ABCאבג.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  דה
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ו
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+  
+
diff --git a/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-contained-L.html b/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-contained-L.html
new file mode 100644
index 0000000000..f71f318bfd
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-contained-L.html
@@ -0,0 +1,62 @@
+
+
+  
+    
+    HTML Test: dir=auto, start with L within contained element
+    
+    
+    
+    
+    
+    
+    
+  
+  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Test passes if the two boxes below look exactly the same.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      Key to entities used below:
+      א - The Hebrew letter Alef (strongly RTL).
+      ב - The Hebrew letter Bet (strongly RTL).
+      ג - The Hebrew letter Gimel (strongly RTL).
+      ד - The Hebrew letter Dalet (strongly RTL).
+      ה - The Hebrew letter He (strongly RTL).
+      ו - The Hebrew letter Vav (strongly RTL).
+      ז - The Hebrew letter Zayin (strongly RTL).
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ABCאבג.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  דה
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ו
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ABCאבג.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  דה
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ו
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ABCאבג.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  דה
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ו
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ABCאבג.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  דה
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ו
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+  
+
diff --git a/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-contained-R-ref.html b/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-contained-R-ref.html
new file mode 100644
index 0000000000..a3938bdf85
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-contained-R-ref.html
@@ -0,0 +1,57 @@
+
+
+  
+    
+    HTML Test: dir=auto, start with R within contained element
+    
+    
+    
+    
+    
+    
+  
+  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Test passes if the two boxes below look exactly the same.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      Key to entities used below:
+      א - The Hebrew letter Alef (strongly RTL).
+      ב - The Hebrew letter Bet (strongly RTL).
+      ג - The Hebrew letter Gimel (strongly RTL).
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  אבגABC.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  XY
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Z
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  אבגABC.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  XY
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Z
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  אבגABC.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  XY
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Z
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  אבגABC.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  XY
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Z
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+  
+
diff --git a/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-contained-R.html b/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-contained-R.html
new file mode 100644
index 0000000000..2ba63426e3
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-contained-R.html
@@ -0,0 +1,58 @@
+
+
+  
+    
+    HTML Test: dir=auto, start with R within contained element
+    
+    
+    
+    
+    
+    
+    
+  
+  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Test passes if the two boxes below look exactly the same.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      Key to entities used below:
+      א - The Hebrew letter Alef (strongly RTL).
+      ב - The Hebrew letter Bet (strongly RTL).
+      ג - The Hebrew letter Gimel (strongly RTL).
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  אבגABC.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  XY
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Z
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  אבגABC.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  XY
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Z
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  אבגABC.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  XY
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Z
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  אבגABC.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  XY
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Z
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+  
+
diff --git a/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-contained-bdi-L-ref.html b/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-contained-bdi-L-ref.html
new file mode 100644
index 0000000000..470220c80d
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-contained-bdi-L-ref.html
@@ -0,0 +1,60 @@
+
+
+  
+    
+    HTML Test: dir=auto, start with bdi, then L
+    
+    
+    
+    
+    
+    
+  
+  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Test passes if the two boxes below look exactly the same.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      Key to entities used below:
+      א - The Hebrew letter Alef (strongly RTL).
+      ב - The Hebrew letter Bet (strongly RTL).
+      ג - The Hebrew letter Gimel (strongly RTL).
+      ד - The Hebrew letter Dalet (strongly RTL).
+      ה - The Hebrew letter He (strongly RTL).
+      ו - The Hebrew letter Vav (strongly RTL).
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  דהוABCאבג.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  דהוABCאבג.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  דהוABCאבג.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  דהוABCאבג.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+  
+
diff --git a/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-contained-bdi-L.html b/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-contained-bdi-L.html
new file mode 100644
index 0000000000..f35abfe3fd
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-contained-bdi-L.html
@@ -0,0 +1,61 @@
+
+
+  
+    
+    HTML Test: dir=auto, start with bdi, then L
+    
+    
+    
+    
+    
+    
+    
+  
+  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Test passes if the two boxes below look exactly the same.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      Key to entities used below:
+      א - The Hebrew letter Alef (strongly RTL).
+      ב - The Hebrew letter Bet (strongly RTL).
+      ג - The Hebrew letter Gimel (strongly RTL).
+      ד - The Hebrew letter Dalet (strongly RTL).
+      ה - The Hebrew letter He (strongly RTL).
+      ו - The Hebrew letter Vav (strongly RTL).
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  דהוABCאבג.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  דהוABCאבג.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  דהוABCאבג.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  דהוABCאבג.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+  
+
diff --git a/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-contained-bdi-R-ref.html b/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-contained-bdi-R-ref.html
new file mode 100644
index 0000000000..94475aaa92
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-contained-bdi-R-ref.html
@@ -0,0 +1,57 @@
+
+
+  
+    
+    HTML Test: dir=auto, start with bdi, then R
+    
+    
+    
+    
+    
+    
+  
+  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Test passes if the two boxes below look exactly the same.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      Key to entities used below:
+      א - The Hebrew letter Alef (strongly RTL).
+      ב - The Hebrew letter Bet (strongly RTL).
+      ג - The Hebrew letter Gimel (strongly RTL).
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  DEFאבגABC.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  DEFאבגABC.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  DEFאבגABC.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  DEFאבגABC.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+  
+
diff --git a/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-contained-bdi-R.html b/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-contained-bdi-R.html
new file mode 100644
index 0000000000..8ac3244618
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-contained-bdi-R.html
@@ -0,0 +1,58 @@
+
+
+  
+    
+    HTML Test: dir=auto, start with bdi, then R
+    
+    
+    
+    
+    
+    
+    
+  
+  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Test passes if the two boxes below look exactly the same.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      Key to entities used below:
+      א - The Hebrew letter Alef (strongly RTL).
+      ב - The Hebrew letter Bet (strongly RTL).
+      ג - The Hebrew letter Gimel (strongly RTL).
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  DEFאבגABC.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  DEFאבגABC.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  DEFאבגABC.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  DEFאבגABC.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+  
+
diff --git a/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-contained-dir-L-ref.html b/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-contained-dir-L-ref.html
new file mode 100644
index 0000000000..7c9f931d3d
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-contained-dir-L-ref.html
@@ -0,0 +1,60 @@
+
+
+  
+    
+    HTML Test: dir=auto, start with dir, then L
+    
+    
+    
+    
+    
+    
+  
+  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Test passes if the two boxes below look exactly the same.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      Key to entities used below:
+      א - The Hebrew letter Alef (strongly RTL).
+      ב - The Hebrew letter Bet (strongly RTL).
+      ג - The Hebrew letter Gimel (strongly RTL).
+      ד - The Hebrew letter Dalet (strongly RTL).
+      ה - The Hebrew letter He (strongly RTL).
+      ו - The Hebrew letter Vav (strongly RTL).
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  דהו
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ABCאבג.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  דהו
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ABCאבג.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  דהו
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ABCאבג.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  דהו
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ABCאבג.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+  
+
diff --git a/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-contained-dir-L.html b/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-contained-dir-L.html
new file mode 100644
index 0000000000..1f424682fa
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-contained-dir-L.html
@@ -0,0 +1,61 @@
+
+
+  
+    
+    HTML Test: dir=auto, start with dir, then L
+    
+    
+    
+    
+    
+    
+    
+  
+  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Test passes if the two boxes below look exactly the same.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      Key to entities used below:
+      א - The Hebrew letter Alef (strongly RTL).
+      ב - The Hebrew letter Bet (strongly RTL).
+      ג - The Hebrew letter Gimel (strongly RTL).
+      ד - The Hebrew letter Dalet (strongly RTL).
+      ה - The Hebrew letter He (strongly RTL).
+      ו - The Hebrew letter Vav (strongly RTL).
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  דהו
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ABCאבג.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  דהו
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ABCאבג.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  דהו
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ABCאבג.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  דהו
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ABCאבג.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+  
+
diff --git a/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-contained-dir-R-ref.html b/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-contained-dir-R-ref.html
new file mode 100644
index 0000000000..c6748dc85f
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-contained-dir-R-ref.html
@@ -0,0 +1,57 @@
+
+
+  
+    
+    HTML Test: dir=auto, start with dir, then R
+    
+    
+    
+    
+    
+    
+  
+  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Test passes if the two boxes below look exactly the same.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      Key to entities used below:
+      א - The Hebrew letter Alef (strongly RTL).
+      ב - The Hebrew letter Bet (strongly RTL).
+      ג - The Hebrew letter Gimel (strongly RTL).
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  DEF
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  אבגABC.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  DEF
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  אבגABC.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  DEF
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  אבגABC.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  DEF
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  אבגABC.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+  
+
diff --git a/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-contained-dir-R.html b/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-contained-dir-R.html
new file mode 100644
index 0000000000..daab191498
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-contained-dir-R.html
@@ -0,0 +1,58 @@
+
+
+  
+    
+    HTML Test: dir=auto, start with dir, then R
+    
+    
+    
+    
+    
+    
+    
+  
+  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Test passes if the two boxes below look exactly the same.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      Key to entities used below:
+      א - The Hebrew letter Alef (strongly RTL).
+      ב - The Hebrew letter Bet (strongly RTL).
+      ג - The Hebrew letter Gimel (strongly RTL).
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  DEF
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  אבגABC.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  DEF
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  אבגABC.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  DEF
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  אבגABC.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  DEF
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  אבגABC.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+  
+
diff --git a/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-contained-dir_auto-L-ref.html b/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-contained-dir_auto-L-ref.html
new file mode 100644
index 0000000000..53c60421f8
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-contained-dir_auto-L-ref.html
@@ -0,0 +1,60 @@
+
+
+  
+    
+    HTML Test: dir=auto, start with dir=auto, then L
+    
+    
+    
+    
+    
+    
+  
+  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Test passes if the two boxes below look exactly the same.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      Key to entities used below:
+      א - The Hebrew letter Alef (strongly RTL).
+      ב - The Hebrew letter Bet (strongly RTL).
+      ג - The Hebrew letter Gimel (strongly RTL).
+      ד - The Hebrew letter Dalet (strongly RTL).
+      ה - The Hebrew letter He (strongly RTL).
+      ו - The Hebrew letter Vav (strongly RTL).
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  דהו
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ABCאבג.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  דהו
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ABCאבג.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  דהו
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ABCאבג.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  דהו
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ABCאבג.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+  
+
diff --git a/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-contained-dir_auto-L.html b/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-contained-dir_auto-L.html
new file mode 100644
index 0000000000..f491f61658
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-contained-dir_auto-L.html
@@ -0,0 +1,61 @@
+
+
+  
+    
+    HTML Test: dir=auto, start with dir=auto, then L
+    
+    
+    
+    
+    
+    
+    
+  
+  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Test passes if the two boxes below look exactly the same.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      Key to entities used below:
+      א - The Hebrew letter Alef (strongly RTL).
+      ב - The Hebrew letter Bet (strongly RTL).
+      ג - The Hebrew letter Gimel (strongly RTL).
+      ד - The Hebrew letter Dalet (strongly RTL).
+      ה - The Hebrew letter He (strongly RTL).
+      ו - The Hebrew letter Vav (strongly RTL).
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  דהו
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ABCאבג.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  דהו
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ABCאבג.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  דהו
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ABCאבג.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  דהו
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ABCאבג.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+  
+
diff --git a/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-contained-dir_auto-R-ref.html b/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-contained-dir_auto-R-ref.html
new file mode 100644
index 0000000000..41871f04a1
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-contained-dir_auto-R-ref.html
@@ -0,0 +1,57 @@
+
+
+  
+    
+    HTML Test: dir=auto, start with dir=auto, then R
+    
+    
+    
+    
+    
+    
+  
+  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Test passes if the two boxes below look exactly the same.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      Key to entities used below:
+      א - The Hebrew letter Alef (strongly RTL).
+      ב - The Hebrew letter Bet (strongly RTL).
+      ג - The Hebrew letter Gimel (strongly RTL).
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  DEF
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  .-=123אבגABC.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  DEF
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  .-=123אבגABC.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  DEF
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  .-=123אבגABC.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  DEF
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  .-=123אבגABC.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+  
+
diff --git a/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-contained-dir_auto-R.html b/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-contained-dir_auto-R.html
new file mode 100644
index 0000000000..e3131c89b3
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-contained-dir_auto-R.html
@@ -0,0 +1,58 @@
+
+
+  
+    
+    HTML Test: dir=auto, start with dir=auto, then R
+    
+    
+    
+    
+    
+    
+    
+  
+  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Test passes if the two boxes below look exactly the same.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      Key to entities used below:
+      א - The Hebrew letter Alef (strongly RTL).
+      ב - The Hebrew letter Bet (strongly RTL).
+      ג - The Hebrew letter Gimel (strongly RTL).
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  DEF
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  .-=123אבגABC.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  DEF
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  .-=123אבגABC.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  DEF
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  .-=123אבגABC.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  DEF
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  .-=123אבגABC.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+  
+
diff --git a/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-contained-script-L-ref.html b/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-contained-script-L-ref.html
new file mode 100644
index 0000000000..aca07de7ef
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-contained-script-L-ref.html
@@ -0,0 +1,57 @@
+
+
+  
+    
+    HTML Test: dir=auto, start with script, then L
+    
+    
+    
+    
+    
+    
+  
+  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Test passes if the two boxes below look exactly the same.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      Key to entities used below:
+      א - The Hebrew letter Alef (strongly RTL).
+      ב - The Hebrew letter Bet (strongly RTL).
+      ג - The Hebrew letter Gimel (strongly RTL).
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ABCאבג.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ABCאבג.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ABCאבג.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ABCאבג.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+  
+
diff --git a/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-contained-script-L.html b/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-contained-script-L.html
new file mode 100644
index 0000000000..59a2e77751
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-contained-script-L.html
@@ -0,0 +1,58 @@
+
+
+  
+    
+    HTML Test: dir=auto, start with script, then L
+    
+    
+    
+    
+    
+    
+    
+  
+  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Test passes if the two boxes below look exactly the same.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      Key to entities used below:
+      א - The Hebrew letter Alef (strongly RTL).
+      ב - The Hebrew letter Bet (strongly RTL).
+      ג - The Hebrew letter Gimel (strongly RTL).
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ABCאבג.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ABCאבג.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ABCאבג.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ABCאבג.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+  
+
diff --git a/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-contained-script-R-ref.html b/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-contained-script-R-ref.html
new file mode 100644
index 0000000000..aa27d2f45b
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-contained-script-R-ref.html
@@ -0,0 +1,58 @@
+
+
+  
+    
+    HTML Test: dir=auto, start with script, then R
+    
+    
+    
+    
+    
+    
+    
+  
+  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Test passes if the two boxes below look exactly the same.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      Key to entities used below:
+      א - The Hebrew letter Alef (strongly RTL).
+      ב - The Hebrew letter Bet (strongly RTL).
+      ג - The Hebrew letter Gimel (strongly RTL).
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  אבגABC.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  אבגABC.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  אבגABC.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  אבגABC.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+  
+
diff --git a/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-contained-script-R.html b/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-contained-script-R.html
new file mode 100644
index 0000000000..ee002766a0
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-contained-script-R.html
@@ -0,0 +1,59 @@
+
+
+  
+    
+    HTML Test: dir=auto, start with script, then R
+    
+    
+    
+    
+    
+    
+    
+    
+  
+  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Test passes if the two boxes below look exactly the same.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      Key to entities used below:
+      א - The Hebrew letter Alef (strongly RTL).
+      ב - The Hebrew letter Bet (strongly RTL).
+      ג - The Hebrew letter Gimel (strongly RTL).
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  אבגABC.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  אבגABC.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  אבגABC.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  אבגABC.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+  
+
diff --git a/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-contained-style-L-ref.html b/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-contained-style-L-ref.html
new file mode 100644
index 0000000000..2ec4f02ec2
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-contained-style-L-ref.html
@@ -0,0 +1,57 @@
+
+
+  
+    
+    HTML Test: dir=auto, start with style, then L
+    
+    
+    
+    
+    
+    
+  
+  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Test passes if the two boxes below look exactly the same.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      Key to entities used below:
+      א - The Hebrew letter Alef (strongly RTL).
+      ב - The Hebrew letter Bet (strongly RTL).
+      ג - The Hebrew letter Gimel (strongly RTL).
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ABCאבג.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ABCאבג.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ABCאבג.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ABCאבג.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+  
+
diff --git a/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-contained-style-L.html b/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-contained-style-L.html
new file mode 100644
index 0000000000..cc74d4c939
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-contained-style-L.html
@@ -0,0 +1,58 @@
+
+
+  
+    
+    HTML Test: dir=auto, start with style, then L
+    
+    
+    
+    
+    
+    
+    
+  
+  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Test passes if the two boxes below look exactly the same.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      Key to entities used below:
+      א - The Hebrew letter Alef (strongly RTL).
+      ב - The Hebrew letter Bet (strongly RTL).
+      ג - The Hebrew letter Gimel (strongly RTL).
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ABCאבג.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ABCאבג.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ABCאבג.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ABCאבג.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+  
+
diff --git a/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-contained-style-R-ref.html b/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-contained-style-R-ref.html
new file mode 100644
index 0000000000..9ad9d7109a
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-contained-style-R-ref.html
@@ -0,0 +1,57 @@
+
+
+  
+    
+    HTML Test: dir=auto, start with style, then R
+    
+    
+    
+    
+    
+    
+  
+  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Test passes if the two boxes below look exactly the same.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      Key to entities used below:
+      א - The Hebrew letter Alef (strongly RTL).
+      ב - The Hebrew letter Bet (strongly RTL).
+      ג - The Hebrew letter Gimel (strongly RTL).
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  אבגABC.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  אבגABC.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  אבגABC.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  אבגABC.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+  
+
diff --git a/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-contained-style-R.html b/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-contained-style-R.html
new file mode 100644
index 0000000000..4aa70cdb2e
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-contained-style-R.html
@@ -0,0 +1,58 @@
+
+
+  
+    
+    HTML Test: dir=auto, start with style, then R
+    
+    
+    
+    
+    
+    
+    
+  
+  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Test passes if the two boxes below look exactly the same.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      Key to entities used below:
+      א - The Hebrew letter Alef (strongly RTL).
+      ב - The Hebrew letter Bet (strongly RTL).
+      ג - The Hebrew letter Gimel (strongly RTL).
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  אבגABC.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  אבגABC.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  אבגABC.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  אבגABC.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+  
+
diff --git a/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-contained-textarea-L-ref.html b/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-contained-textarea-L-ref.html
new file mode 100644
index 0000000000..411099f7b4
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-contained-textarea-L-ref.html
@@ -0,0 +1,60 @@
+
+
+  
+    
+    HTML Test: dir=auto, start with textarea, then L
+    
+    
+    
+    
+    
+    
+  
+  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Test passes if the two boxes below look exactly the same.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      Key to entities used below:
+      א - The Hebrew letter Alef (strongly RTL).
+      ב - The Hebrew letter Bet (strongly RTL).
+      ג - The Hebrew letter Gimel (strongly RTL).
+      ד - The Hebrew letter Dalet (strongly RTL).
+      ה - The Hebrew letter He (strongly RTL).
+      ו - The Hebrew letter Vav (strongly RTL).
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ABCאבג.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ABCאבג.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ABCאבג.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ABCאבג.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+  
+
diff --git a/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-contained-textarea-L.html b/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-contained-textarea-L.html
new file mode 100644
index 0000000000..0de041fe01
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-contained-textarea-L.html
@@ -0,0 +1,61 @@
+
+
+  
+    
+    HTML Test: dir=auto, start with textarea, then L
+    
+    
+    
+    
+    
+    
+    
+  
+  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Test passes if the two boxes below look exactly the same.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      Key to entities used below:
+      א - The Hebrew letter Alef (strongly RTL).
+      ב - The Hebrew letter Bet (strongly RTL).
+      ג - The Hebrew letter Gimel (strongly RTL).
+      ד - The Hebrew letter Dalet (strongly RTL).
+      ה - The Hebrew letter He (strongly RTL).
+      ו - The Hebrew letter Vav (strongly RTL).
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ABCאבג.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ABCאבג.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ABCאבג.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ABCאבג.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+  
+
diff --git a/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-contained-textarea-R-ref.html b/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-contained-textarea-R-ref.html
new file mode 100644
index 0000000000..351431fb2b
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-contained-textarea-R-ref.html
@@ -0,0 +1,57 @@
+
+
+  
+    
+    HTML Test: dir=auto, start with textarea, then R
+    
+    
+    
+    
+    
+    
+  
+  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Test passes if the two boxes below look exactly the same.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      Key to entities used below:
+      א - The Hebrew letter Alef (strongly RTL).
+      ב - The Hebrew letter Bet (strongly RTL).
+      ג - The Hebrew letter Gimel (strongly RTL).
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  אבגABC.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  אבגABC.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  אבגABC.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  אבגABC.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+  
+
diff --git a/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-contained-textarea-R.html b/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-contained-textarea-R.html
new file mode 100644
index 0000000000..852de6073c
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-contained-textarea-R.html
@@ -0,0 +1,58 @@
+
+
+  
+    
+    HTML Test: dir=auto, start with textarea, then R
+    
+    
+    
+    
+    
+    
+    
+  
+  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Test passes if the two boxes below look exactly the same.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      Key to entities used below:
+      א - The Hebrew letter Alef (strongly RTL).
+      ב - The Hebrew letter Bet (strongly RTL).
+      ג - The Hebrew letter Gimel (strongly RTL).
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  אבגABC.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  אבגABC.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  אבגABC.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  אבגABC.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+  
+
diff --git a/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-input-EN-L-ref.html b/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-input-EN-L-ref.html
new file mode 100644
index 0000000000..198d081c26
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-input-EN-L-ref.html
@@ -0,0 +1,58 @@
+
+
+  
+    
+    HTML Test: input with dir=auto, start with EN+L
+    
+    
+    
+    
+    
+    
+    
+  
+  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Test passes if the two boxes below look exactly the same.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      Key to entities used below:
+      א - The Hebrew letter Alef (strongly RTL).
+      ב - The Hebrew letter Bet (strongly RTL).
+      ג - The Hebrew letter Gimel (strongly RTL).
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+  
+
diff --git a/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-input-EN-L.html b/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-input-EN-L.html
new file mode 100644
index 0000000000..d5ade6c096
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-input-EN-L.html
@@ -0,0 +1,59 @@
+
+
+  
+    
+    HTML Test: input with dir=auto, start with EN+L
+    
+    
+    
+    
+    
+    
+    
+    
+  
+  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Test passes if the two boxes below look exactly the same.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      Key to entities used below:
+      א - The Hebrew letter Alef (strongly RTL).
+      ב - The Hebrew letter Bet (strongly RTL).
+      ג - The Hebrew letter Gimel (strongly RTL).
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+  
+
diff --git a/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-input-EN-R-ref.html b/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-input-EN-R-ref.html
new file mode 100644
index 0000000000..303afc3c6b
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-input-EN-R-ref.html
@@ -0,0 +1,58 @@
+
+
+  
+    
+    HTML Test: input with dir=auto, start with EN+R
+    
+    
+    
+    
+    
+    
+    
+  
+  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Test passes if the two boxes below look exactly the same.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      Key to entities used below:
+      א - The Hebrew letter Alef (strongly RTL).
+      ב - The Hebrew letter Bet (strongly RTL).
+      ג - The Hebrew letter Gimel (strongly RTL).
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+  
+
diff --git a/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-input-EN-R.html b/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-input-EN-R.html
new file mode 100644
index 0000000000..08ef3ecd70
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-input-EN-R.html
@@ -0,0 +1,59 @@
+
+
+  
+    
+    HTML Test: input with dir=auto, start with EN+R
+    
+    
+    
+    
+    
+    
+    
+    
+  
+  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Test passes if the two boxes below look exactly the same.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      Key to entities used below:
+      א - The Hebrew letter Alef (strongly RTL).
+      ב - The Hebrew letter Bet (strongly RTL).
+      ג - The Hebrew letter Gimel (strongly RTL).
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+  
+
diff --git a/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-input-L-ref.html b/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-input-L-ref.html
new file mode 100644
index 0000000000..cb3621aa61
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-input-L-ref.html
@@ -0,0 +1,58 @@
+
+
+  
+    
+    HTML Test: input with dir=auto, start with L
+    
+    
+    
+    
+    
+    
+    
+  
+  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Test passes if the two boxes below look exactly the same.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      Key to entities used below:
+      א - The Hebrew letter Alef (strongly RTL).
+      ב - The Hebrew letter Bet (strongly RTL).
+      ג - The Hebrew letter Gimel (strongly RTL).
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+  
+
diff --git a/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-input-L.html b/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-input-L.html
new file mode 100644
index 0000000000..0a23f2b86d
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-input-L.html
@@ -0,0 +1,59 @@
+
+
+  
+    
+    HTML Test: input with dir=auto, start with L
+    
+    
+    
+    
+    
+    
+    
+    
+  
+  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Test passes if the two boxes below look exactly the same.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      Key to entities used below:
+      א - The Hebrew letter Alef (strongly RTL).
+      ב - The Hebrew letter Bet (strongly RTL).
+      ג - The Hebrew letter Gimel (strongly RTL).
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+  
+
diff --git a/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-input-N-EN-L-ref.html b/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-input-N-EN-L-ref.html
new file mode 100644
index 0000000000..3d0f2cf3cc
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-input-N-EN-L-ref.html
@@ -0,0 +1,58 @@
+
+
+  
+    
+    HTML Test: input with dir=auto, start with N+EN+L
+    
+    
+    
+    
+    
+    
+    
+  
+  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Test passes if the two boxes below look exactly the same.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      Key to entities used below:
+      א - The Hebrew letter Alef (strongly RTL).
+      ב - The Hebrew letter Bet (strongly RTL).
+      ג - The Hebrew letter Gimel (strongly RTL).
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+  
+
diff --git a/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-input-N-EN-L.html b/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-input-N-EN-L.html
new file mode 100644
index 0000000000..03f85526da
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-input-N-EN-L.html
@@ -0,0 +1,59 @@
+
+
+  
+    
+    HTML Test: input with dir=auto, start with N+EN+L
+    
+    
+    
+    
+    
+    
+    
+    
+  
+  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Test passes if the two boxes below look exactly the same.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      Key to entities used below:
+      א - The Hebrew letter Alef (strongly RTL).
+      ב - The Hebrew letter Bet (strongly RTL).
+      ג - The Hebrew letter Gimel (strongly RTL).
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+  
+
diff --git a/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-input-N-EN-R-ref.html b/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-input-N-EN-R-ref.html
new file mode 100644
index 0000000000..26bf27d619
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-input-N-EN-R-ref.html
@@ -0,0 +1,58 @@
+
+
+  
+    
+    HTML Test: input with dir=auto, start with N+EN+R
+    
+    
+    
+    
+    
+    
+    
+  
+  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Test passes if the two boxes below look exactly the same.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      Key to entities used below:
+      א - The Hebrew letter Alef (strongly RTL).
+      ב - The Hebrew letter Bet (strongly RTL).
+      ג - The Hebrew letter Gimel (strongly RTL).
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+  
+
diff --git a/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-input-N-EN-R.html b/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-input-N-EN-R.html
new file mode 100644
index 0000000000..13193d3d72
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-input-N-EN-R.html
@@ -0,0 +1,59 @@
+
+
+  
+    
+    HTML Test: input with dir=auto, start with N+EN+R
+    
+    
+    
+    
+    
+    
+    
+    
+  
+  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Test passes if the two boxes below look exactly the same.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      Key to entities used below:
+      א - The Hebrew letter Alef (strongly RTL).
+      ב - The Hebrew letter Bet (strongly RTL).
+      ג - The Hebrew letter Gimel (strongly RTL).
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+  
+
diff --git a/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-input-N-EN-ref.html b/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-input-N-EN-ref.html
new file mode 100644
index 0000000000..33f75b730b
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-input-N-EN-ref.html
@@ -0,0 +1,53 @@
+
+
+  
+    
+    HTML Test: input with dir=auto, all N+EN
+    
+    
+    
+    
+    
+    
+    
+  
+  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Test passes if the two boxes below look exactly the same.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+  
+
diff --git a/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-input-N-EN.html b/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-input-N-EN.html
new file mode 100644
index 0000000000..03df3c6dcc
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-input-N-EN.html
@@ -0,0 +1,54 @@
+
+
+  
+    
+    HTML Test: input with dir=auto, all N+EN
+    
+    
+    
+    
+    
+    
+    
+    
+  
+  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Test passes if the two boxes below look exactly the same.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+  
+
diff --git a/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-input-N-L-ref.html b/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-input-N-L-ref.html
new file mode 100644
index 0000000000..b6a89a1d72
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-input-N-L-ref.html
@@ -0,0 +1,58 @@
+
+
+  
+    
+    HTML Test: input with dir=auto, start with N+L
+    
+    
+    
+    
+    
+    
+    
+  
+  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Test passes if the two boxes below look exactly the same.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      Key to entities used below:
+      א - The Hebrew letter Alef (strongly RTL).
+      ב - The Hebrew letter Bet (strongly RTL).
+      ג - The Hebrew letter Gimel (strongly RTL).
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+  
+
diff --git a/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-input-N-L.html b/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-input-N-L.html
new file mode 100644
index 0000000000..9c1d3bceec
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-input-N-L.html
@@ -0,0 +1,59 @@
+
+
+  
+    
+    HTML Test: input with dir=auto, start with N+L
+    
+    
+    
+    
+    
+    
+    
+    
+  
+  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Test passes if the two boxes below look exactly the same.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      Key to entities used below:
+      א - The Hebrew letter Alef (strongly RTL).
+      ב - The Hebrew letter Bet (strongly RTL).
+      ג - The Hebrew letter Gimel (strongly RTL).
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+  
+
diff --git a/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-input-N-R-ref.html b/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-input-N-R-ref.html
new file mode 100644
index 0000000000..bcd5430441
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-input-N-R-ref.html
@@ -0,0 +1,58 @@
+
+
+  
+    
+    HTML Test: input with dir=auto, start with N+R
+    
+    
+    
+    
+    
+    
+    
+  
+  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Test passes if the two boxes below look exactly the same.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      Key to entities used below:
+      א - The Hebrew letter Alef (strongly RTL).
+      ב - The Hebrew letter Bet (strongly RTL).
+      ג - The Hebrew letter Gimel (strongly RTL).
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+  
+
diff --git a/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-input-N-R.html b/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-input-N-R.html
new file mode 100644
index 0000000000..dbf54f7344
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-input-N-R.html
@@ -0,0 +1,59 @@
+
+
+  
+    
+    HTML Test: input with dir=auto, start with N+R
+    
+    
+    
+    
+    
+    
+    
+    
+  
+  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Test passes if the two boxes below look exactly the same.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      Key to entities used below:
+      א - The Hebrew letter Alef (strongly RTL).
+      ב - The Hebrew letter Bet (strongly RTL).
+      ג - The Hebrew letter Gimel (strongly RTL).
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+  
+
diff --git a/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-input-R-ref.html b/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-input-R-ref.html
new file mode 100644
index 0000000000..217972e82d
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-input-R-ref.html
@@ -0,0 +1,58 @@
+
+
+  
+    
+    HTML Test: input with dir=auto, start with R
+    
+    
+    
+    
+    
+    
+    
+  
+  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Test passes if the two boxes below look exactly the same.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      Key to entities used below:
+      א - The Hebrew letter Alef (strongly RTL).
+      ב - The Hebrew letter Bet (strongly RTL).
+      ג - The Hebrew letter Gimel (strongly RTL).
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+  
+
diff --git a/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-input-R.html b/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-input-R.html
new file mode 100644
index 0000000000..6d2612b316
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-input-R.html
@@ -0,0 +1,59 @@
+
+
+  
+    
+    HTML Test: input with dir=auto, start with R
+    
+    
+    
+    
+    
+    
+    
+    
+  
+  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Test passes if the two boxes below look exactly the same.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      Key to entities used below:
+      א - The Hebrew letter Alef (strongly RTL).
+      ב - The Hebrew letter Bet (strongly RTL).
+      ג - The Hebrew letter Gimel (strongly RTL).
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+  
+
diff --git a/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-input-script-EN-L-ref.html b/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-input-script-EN-L-ref.html
new file mode 100644
index 0000000000..879e20d6cf
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-input-script-EN-L-ref.html
@@ -0,0 +1,58 @@
+
+
+  
+    
+    HTML Test: input with dir=auto, script assigns to start with EN+L
+    
+    
+    
+    
+    
+    
+    
+  
+  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Test passes if the two boxes below look exactly the same.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      Key to entities used below:
+      א - The Hebrew letter Alef (strongly RTL).
+      ב - The Hebrew letter Bet (strongly RTL).
+      ג - The Hebrew letter Gimel (strongly RTL).
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+  
+
diff --git a/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-input-script-EN-L.html b/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-input-script-EN-L.html
new file mode 100644
index 0000000000..d0a9e2bb9b
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-input-script-EN-L.html
@@ -0,0 +1,70 @@
+
+
+  
+    
+    HTML Test: input with dir=auto, script assigns to start with EN+L
+    
+    
+    
+    
+    
+    
+    
+    
+  
+  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Test passes if the two boxes below look exactly the same.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      Key to entities used below:
+      א - The Hebrew letter Alef (strongly RTL).
+      ב - The Hebrew letter Bet (strongly RTL).
+      ג - The Hebrew letter Gimel (strongly RTL).
+      This test makes sure that the direction is set correctly for an input whose value is set
+      dynamically by script.
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+  
+
diff --git a/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-input-script-EN-R-ref.html b/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-input-script-EN-R-ref.html
new file mode 100644
index 0000000000..15781e2524
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-input-script-EN-R-ref.html
@@ -0,0 +1,58 @@
+
+
+  
+    
+    HTML Test: input with dir=auto, script assigns to start with EN+R
+    
+    
+    
+    
+    
+    
+    
+  
+  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Test passes if the two boxes below look exactly the same.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      Key to entities used below:
+      א - The Hebrew letter Alef (strongly RTL).
+      ב - The Hebrew letter Bet (strongly RTL).
+      ג - The Hebrew letter Gimel (strongly RTL).
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+  
+
diff --git a/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-input-script-EN-R.html b/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-input-script-EN-R.html
new file mode 100644
index 0000000000..e444b90dc2
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-input-script-EN-R.html
@@ -0,0 +1,70 @@
+
+
+  
+    
+    HTML Test: input with dir=auto, script assigns to start with EN+R
+    
+    
+    
+    
+    
+    
+    
+    
+  
+  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Test passes if the two boxes below look exactly the same.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      Key to entities used below:
+      א - The Hebrew letter Alef (strongly RTL).
+      ב - The Hebrew letter Bet (strongly RTL).
+      ג - The Hebrew letter Gimel (strongly RTL).
+      This test makes sure that the direction is set correctly for an input whose value is set
+      dynamically by script.
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+  
+
diff --git a/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-input-script-L-ref.html b/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-input-script-L-ref.html
new file mode 100644
index 0000000000..0feef25047
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-input-script-L-ref.html
@@ -0,0 +1,58 @@
+
+
+  
+    
+    HTML Test: input with dir=auto, script assigns to start with L
+    
+    
+    
+    
+    
+    
+    
+  
+  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Test passes if the two boxes below look exactly the same.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      Key to entities used below:
+      א - The Hebrew letter Alef (strongly RTL).
+      ב - The Hebrew letter Bet (strongly RTL).
+      ג - The Hebrew letter Gimel (strongly RTL).
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+  
+
diff --git a/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-input-script-L.html b/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-input-script-L.html
new file mode 100644
index 0000000000..e6aa700ad0
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-input-script-L.html
@@ -0,0 +1,70 @@
+
+
+  
+    
+    HTML Test: input with dir=auto, script assigns to start with L
+    
+    
+    
+    
+    
+    
+    
+    
+  
+  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Test passes if the two boxes below look exactly the same.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      Key to entities used below:
+      א - The Hebrew letter Alef (strongly RTL).
+      ב - The Hebrew letter Bet (strongly RTL).
+      ג - The Hebrew letter Gimel (strongly RTL).
+      This test makes sure that the direction is set correctly for an input whose value is set
+      dynamically by script.
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+  
+
diff --git a/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-input-script-N-EN-L-ref.html b/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-input-script-N-EN-L-ref.html
new file mode 100644
index 0000000000..6d6902f314
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-input-script-N-EN-L-ref.html
@@ -0,0 +1,58 @@
+
+
+  
+    
+    HTML Test: input with dir=auto, script assigns to start with N+EN+L
+    
+    
+    
+    
+    
+    
+    
+  
+  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Test passes if the two boxes below look exactly the same.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      Key to entities used below:
+      א - The Hebrew letter Alef (strongly RTL).
+      ב - The Hebrew letter Bet (strongly RTL).
+      ג - The Hebrew letter Gimel (strongly RTL).
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+  
+
diff --git a/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-input-script-N-EN-L.html b/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-input-script-N-EN-L.html
new file mode 100644
index 0000000000..7905cee946
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-input-script-N-EN-L.html
@@ -0,0 +1,70 @@
+
+
+  
+    
+    HTML Test: input with dir=auto, script assigns to start with N+EN+L
+    
+    
+    
+    
+    
+    
+    
+    
+  
+  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Test passes if the two boxes below look exactly the same.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      Key to entities used below:
+      א - The Hebrew letter Alef (strongly RTL).
+      ב - The Hebrew letter Bet (strongly RTL).
+      ג - The Hebrew letter Gimel (strongly RTL).
+      This test makes sure that the direction is set correctly for an input whose value is set
+      dynamically by script.
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+  
+
diff --git a/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-input-script-N-EN-R-ref.html b/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-input-script-N-EN-R-ref.html
new file mode 100644
index 0000000000..53dd892096
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-input-script-N-EN-R-ref.html
@@ -0,0 +1,58 @@
+
+
+  
+    
+    HTML Test: input with dir=auto, script assigns to start with N+EN+R
+    
+    
+    
+    
+    
+    
+    
+  
+  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Test passes if the two boxes below look exactly the same.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      Key to entities used below:
+      א - The Hebrew letter Alef (strongly RTL).
+      ב - The Hebrew letter Bet (strongly RTL).
+      ג - The Hebrew letter Gimel (strongly RTL).
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+  
+
diff --git a/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-input-script-N-EN-R.html b/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-input-script-N-EN-R.html
new file mode 100644
index 0000000000..95faa72ea7
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-input-script-N-EN-R.html
@@ -0,0 +1,70 @@
+
+
+  
+    
+    HTML Test: input with dir=auto, script assigns to start with N+EN+R
+    
+    
+    
+    
+    
+    
+    
+    
+  
+  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Test passes if the two boxes below look exactly the same.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      Key to entities used below:
+      א - The Hebrew letter Alef (strongly RTL).
+      ב - The Hebrew letter Bet (strongly RTL).
+      ג - The Hebrew letter Gimel (strongly RTL).
+      This test makes sure that the direction is set correctly for an input whose value is set
+      dynamically by script.
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+  
+
diff --git a/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-input-script-N-EN-ref.html b/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-input-script-N-EN-ref.html
new file mode 100644
index 0000000000..11697e53eb
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-input-script-N-EN-ref.html
@@ -0,0 +1,53 @@
+
+
+  
+    
+    HTML Test: input with dir=auto, script assigns to all N+EN
+    
+    
+    
+    
+    
+    
+    
+  
+  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Test passes if the two boxes below look exactly the same.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+  
+
diff --git a/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-input-script-N-EN.html b/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-input-script-N-EN.html
new file mode 100644
index 0000000000..2721affaef
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-input-script-N-EN.html
@@ -0,0 +1,69 @@
+
+
+  
+    
+    HTML Test: input with dir=auto, script assigns to all N+EN
+    
+    
+    
+    
+    
+    
+    
+    
+  
+  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Test passes if the two boxes below look exactly the same.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      Key to entities used below:
+      א - The Hebrew letter Alef (strongly RTL).
+      This test makes sure that the direction is set correctly for an input whose value is set
+      dynamically by script.
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+  
+
diff --git a/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-input-script-N-L-ref.html b/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-input-script-N-L-ref.html
new file mode 100644
index 0000000000..fd7cb10fbd
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-input-script-N-L-ref.html
@@ -0,0 +1,58 @@
+
+
+  
+    
+    HTML Test: input with dir=auto, script assigns to start with N+L
+    
+    
+    
+    
+    
+    
+    
+  
+  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Test passes if the two boxes below look exactly the same.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      Key to entities used below:
+      א - The Hebrew letter Alef (strongly RTL).
+      ב - The Hebrew letter Bet (strongly RTL).
+      ג - The Hebrew letter Gimel (strongly RTL).
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+  
+
diff --git a/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-input-script-N-L.html b/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-input-script-N-L.html
new file mode 100644
index 0000000000..2ff24db28c
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-input-script-N-L.html
@@ -0,0 +1,70 @@
+
+
+  
+    
+    HTML Test: input with dir=auto, script assigns to start with N+L
+    
+    
+    
+    
+    
+    
+    
+    
+  
+  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Test passes if the two boxes below look exactly the same.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      Key to entities used below:
+      א - The Hebrew letter Alef (strongly RTL).
+      ב - The Hebrew letter Bet (strongly RTL).
+      ג - The Hebrew letter Gimel (strongly RTL).
+      This test makes sure that the direction is set correctly for an input whose value is set
+      dynamically by script.
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+  
+
diff --git a/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-input-script-N-R-ref.html b/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-input-script-N-R-ref.html
new file mode 100644
index 0000000000..0fa6da249a
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-input-script-N-R-ref.html
@@ -0,0 +1,58 @@
+
+
+  
+    
+    HTML Test: input with dir=auto, script assigns to start with N+R
+    
+    
+    
+    
+    
+    
+    
+  
+  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Test passes if the two boxes below look exactly the same.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      Key to entities used below:
+      א - The Hebrew letter Alef (strongly RTL).
+      ב - The Hebrew letter Bet (strongly RTL).
+      ג - The Hebrew letter Gimel (strongly RTL).
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+  
+
diff --git a/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-input-script-N-R.html b/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-input-script-N-R.html
new file mode 100644
index 0000000000..0663b28ad2
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-input-script-N-R.html
@@ -0,0 +1,70 @@
+
+
+  
+    
+    HTML Test: input with dir=auto, script assigns to start with N+R
+    
+    
+    
+    
+    
+    
+    
+    
+  
+  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Test passes if the two boxes below look exactly the same.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      Key to entities used below:
+      א - The Hebrew letter Alef (strongly RTL).
+      ב - The Hebrew letter Bet (strongly RTL).
+      ג - The Hebrew letter Gimel (strongly RTL).
+      This test makes sure that the direction is set correctly for an input whose value is set
+      dynamically by script.
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+  
+
diff --git a/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-input-script-R-ref.html b/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-input-script-R-ref.html
new file mode 100644
index 0000000000..12b2d1925f
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-input-script-R-ref.html
@@ -0,0 +1,58 @@
+
+
+  
+    
+    HTML Test: input with dir=auto, script assigns to start with R
+    
+    
+    
+    
+    
+    
+    
+  
+  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Test passes if the two boxes below look exactly the same.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      Key to entities used below:
+      א - The Hebrew letter Alef (strongly RTL).
+      ב - The Hebrew letter Bet (strongly RTL).
+      ג - The Hebrew letter Gimel (strongly RTL).
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+  
+
diff --git a/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-input-script-R.html b/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-input-script-R.html
new file mode 100644
index 0000000000..07becaaccd
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-input-script-R.html
@@ -0,0 +1,70 @@
+
+
+  
+    
+    HTML Test: input with dir=auto, script assigns to start with R
+    
+    
+    
+    
+    
+    
+    
+    
+  
+  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Test passes if the two boxes below look exactly the same.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      Key to entities used below:
+      א - The Hebrew letter Alef (strongly RTL).
+      ב - The Hebrew letter Bet (strongly RTL).
+      ג - The Hebrew letter Gimel (strongly RTL).
+      This test makes sure that the direction is set correctly for an input whose value is set
+      dynamically by script.
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+  
+
diff --git a/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-isolate-ref.html b/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-isolate-ref.html
new file mode 100644
index 0000000000..858a7db233
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-isolate-ref.html
@@ -0,0 +1,57 @@
+
+
+  
+    
+    HTML Test: dir=auto, isolated in LTR text
+    
+    
+    
+    
+    
+    
+  
+  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Test passes if the two boxes below look exactly the same.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      Key to entities used below:
+      א - The Hebrew letter Alef (strongly RTL).
+      ‭ - The LRO (left-to-right override) formatting character.
+      ‬ - The PDF (pop directional formatting) formatting character; closes LRO.
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        ‭1 a! א‬
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        ‭a !א 1‬
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        ‭1 a! א‬
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        ‭a !א 1‬
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+  
+
diff --git a/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-isolate.html b/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-isolate.html
new file mode 100644
index 0000000000..14272c0531
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-isolate.html
@@ -0,0 +1,58 @@
+
+
+  
+    
+    HTML Test: dir=auto, isolated in LTR text
+    
+    
+    
+    
+    
+    
+    
+  
+  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Test passes if the two boxes below look exactly the same.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      Key to entities used below:
+      א - The Hebrew letter Alef (strongly RTL).
+      ‭ - The LRO (left-to-right override) formatting character.
+      ‬ - The PDF (pop directional formatting) formatting character; closes LRO.
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        א a! 1
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        a א! 1
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        ‭1 a! א‬
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        ‭a !א 1‬
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+  
+
diff --git a/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-pre-N-EN-ref.html b/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-pre-N-EN-ref.html
new file mode 100644
index 0000000000..c951c30b20
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-pre-N-EN-ref.html
@@ -0,0 +1,49 @@
+
+
+  
+    
+    
+    
+    
+  
+  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Test passes if the two boxes below look exactly the same.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  +@123!
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  +@123!
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  +@123!
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  +@123!
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+  
+
diff --git a/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-pre-N-EN.html b/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-pre-N-EN.html
new file mode 100644
index 0000000000..cd721d725e
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-pre-N-EN.html
@@ -0,0 +1,66 @@
+
+
+  
+    
+    HTML Test: pre with dir=auto, all N+EN
+    
+    
+    
+    
+    
+    
+    
+  
+  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Test passes if the two boxes below look exactly the same.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      Key to entities used below:
+        ‎ - LRM, the invisible left-to-right mark (strongly LTR).
+        ‏ - RLM, the invisible right-to-left mark (strongly RTL).
+      We use text-align:left because neither the dir="auto" nor the unicode-bidi:plaintext
+      specification states whether text-align:start and text-align:end should obey the paragraph
+      direction or the direction property in a unicode-bidi:plaintext element.
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  +@123!
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  +@123!
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  +@123!
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  +@123!
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+  
+
diff --git a/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-pre-N-between-Rs-ref.html b/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-pre-N-between-Rs-ref.html
new file mode 100644
index 0000000000..2d9caf062d
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-pre-N-between-Rs-ref.html
@@ -0,0 +1,61 @@
+
+
+  
+    
+    
+    
+    
+  
+  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Test passes if the two boxes below look exactly the same.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      Key to entities used below:
+        א - The Hebrew letter Alef (strongly RTL).
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  +א
+!...
+א
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  +א
+!...
+א
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  +א
+!...
+א
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  +א
+!...
+א
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+  
+
diff --git a/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-pre-N-between-Rs.html b/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-pre-N-between-Rs.html
new file mode 100644
index 0000000000..adca24d88f
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-pre-N-between-Rs.html
@@ -0,0 +1,76 @@
+
+
+  
+    
+    HTML Test: pre with dir=auto, all-N between all-Rs
+    
+    
+    
+    
+    
+    
+    
+  
+  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Test passes if the two boxes below look exactly the same.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      Key to entities used below:
+        א - The Hebrew letter Alef (strongly RTL).
+      We use text-align:left because neither the dir="auto" nor the unicode-bidi:plaintext
+      specification states whether text-align:start and text-align:end should obey the paragraph
+      direction or the direction property in a unicode-bidi:plaintext element.
+      The ...! paragraph, being neutral, is supposed to be displayed LTR (i.e. as ...!, not as !...)
+      despite both the paragraph before it and the paragraph after it being all-RTL, which makes the
+      element as a whole RTL.
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  +א
+...!
+א
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  +א
+...!
+א
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  +א
+!...
+א
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  +א
+!...
+א
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+  
+
diff --git a/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-pre-mixed-ref.html b/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-pre-mixed-ref.html
new file mode 100644
index 0000000000..10bd02433b
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-pre-mixed-ref.html
@@ -0,0 +1,61 @@
+
+
+  
+    
+    
+    
+    
+  
+  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Test passes if the two boxes below look exactly the same.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  +@123!
+@123!
+@123!
+@123!
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  +@123!
+@123!
+@123!
+@123!
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  +@123!
+@123!
+@123!
+@123!
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  +@123!
+@123!
+@123!
+@123!
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+  
+
diff --git a/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-pre-mixed.html b/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-pre-mixed.html
new file mode 100644
index 0000000000..906365621d
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-pre-mixed.html
@@ -0,0 +1,77 @@
+
+
+  
+    
+    HTML Test: pre with dir=auto, mixed L and R paragraphs
+    
+    
+    
+    
+    
+    
+    
+  
+  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Test passes if the two boxes below look exactly the same.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      Key to entities used below:
+        ‎ - LRM, the invisible left-to-right mark (strongly LTR).
+        ‏ - RLM, the invisible right-to-left mark (strongly RTL).
+      We use text-align:left because neither the dir="auto" nor the unicode-bidi:plaintext
+      specification states whether text-align:start and text-align:end should obey the paragraph
+      direction or the direction property in a unicode-bidi:plaintext element.
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  +@‎123‏!
+!‏123‎@
+@123‎‏!
+!123‏‎@
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  +@‎123‏!
+!‏123‎@
+@123‎‏!
+!123‏‎@
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  +@123!
+@123!
+@123!
+@123!
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  +@123!
+@123!
+@123!
+@123!
+        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+  
+
diff --git a/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-textarea-N-EN-ref.html b/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-textarea-N-EN-ref.html
new file mode 100644
index 0000000000..253b84459e
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-textarea-N-EN-ref.html
@@ -0,0 +1,49 @@
+
+
+  
+    
+    
+    
+    
+  
+  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Test passes if the two boxes below look exactly the same.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+  
+
diff --git a/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-textarea-N-EN.html b/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-textarea-N-EN.html
new file mode 100644
index 0000000000..f0fa2161a1
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-textarea-N-EN.html
@@ -0,0 +1,66 @@
+
+
+  
+    
+    HTML Test: textarea with dir=auto, all N+EN
+    
+    
+    
+    
+    
+    
+    
+  
+  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Test passes if the two boxes below look exactly the same.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      Key to entities used below:
+        ‎ - LRM, the invisible left-to-right mark (strongly LTR).
+        ‏ - RLM, the invisible right-to-left mark (strongly RTL).
+      We use text-align:left because neither the dir="auto" nor the unicode-bidi:plaintext
+      specification states whether text-align:start and text-align:end should obey the paragraph
+      direction or the direction property in a unicode-bidi:plaintext element.
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+  
+
diff --git a/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-textarea-N-between-Rs-ref.html b/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-textarea-N-between-Rs-ref.html
new file mode 100644
index 0000000000..afeef08cbf
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-textarea-N-between-Rs-ref.html
@@ -0,0 +1,64 @@
+
+
+  
+    
+    
+    
+    
+  
+  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Test passes if the two boxes below look exactly the same.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      Key to entities used below:
+        א - The Hebrew letter Alef (strongly RTL).
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+  
+
diff --git a/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-textarea-N-between-Rs.html b/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-textarea-N-between-Rs.html
new file mode 100644
index 0000000000..b5850e1c3c
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-textarea-N-between-Rs.html
@@ -0,0 +1,79 @@
+
+
+  
+    
+    HTML Test: textarea with dir=auto, all-N between all-Rs
+    
+    
+    
+    
+    
+    
+    
+  
+  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Test passes if the two boxes below look exactly the same.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      Key to entities used below:
+        א - The Hebrew letter Alef (strongly RTL).
+      We use text-align:left because neither the dir="auto" nor the unicode-bidi:plaintext
+      specification states whether text-align:start and text-align:end should obey the paragraph
+      direction or the direction property in a unicode-bidi:plaintext element.
+      The ...! paragraph, being neutral, is supposed to be displayed LTR (i.e. as ...!, not as !...)
+      despite both the paragraph before it and the paragraph after it being all-RTL, which makes the
+      element as a whole RTL.
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+  
+
diff --git a/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-textarea-mixed-ref.html b/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-textarea-mixed-ref.html
new file mode 100644
index 0000000000..a5a84480f6
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-textarea-mixed-ref.html
@@ -0,0 +1,64 @@
+
+
+  
+    
+    
+    
+    
+  
+  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Test passes if the two boxes below look exactly the same.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+  
+
diff --git a/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-textarea-mixed.html b/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-textarea-mixed.html
new file mode 100644
index 0000000000..4947124c99
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-textarea-mixed.html
@@ -0,0 +1,80 @@
+
+
+  
+    
+    HTML Test: textarea with dir=auto, mixed L and R paragraphs
+    
+    
+    
+    
+    
+    
+    
+  
+  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Test passes if the two boxes below look exactly the same.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      Key to entities used below:
+        ‎ - LRM, the invisible left-to-right mark (strongly LTR).
+        ‏ - RLM, the invisible right-to-left mark (strongly RTL).
+      We use text-align:left because neither the dir="auto" nor the unicode-bidi:plaintext
+      specification states whether text-align:start and text-align:end should obey the paragraph
+      direction or the direction property in a unicode-bidi:plaintext element.
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+  
+
diff --git a/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-textarea-script-N-EN-ref.html b/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-textarea-script-N-EN-ref.html
new file mode 100644
index 0000000000..253b84459e
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-textarea-script-N-EN-ref.html
@@ -0,0 +1,49 @@
+
+
+  
+    
+    
+    
+    
+  
+  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Test passes if the two boxes below look exactly the same.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+  
+
diff --git a/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-textarea-script-N-EN.html b/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-textarea-script-N-EN.html
new file mode 100644
index 0000000000..3c674e2f82
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-textarea-script-N-EN.html
@@ -0,0 +1,77 @@
+
+
+  
+    
+    HTML Test: textarea with dir=auto, script assigns to all N+EN
+    
+    
+    
+    
+    
+    
+    
+  
+  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Test passes if the two boxes below look exactly the same.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      Key to entities used below:
+        ‎ - LRM, the invisible left-to-right mark (strongly LTR).
+        ‏ - RLM, the invisible right-to-left mark (strongly RTL).
+      This test makes sure that the direction is set correctly for a textarea whose value is set
+      dynamically by script.
+      We use text-align:left because neither the dir="auto" nor the unicode-bidi:plaintext
+      specification states whether text-align:start and text-align:end should obey the paragraph
+      direction or the direction property in a unicode-bidi:plaintext element.
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+  
+
diff --git a/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-textarea-script-N-between-Rs-ref.html b/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-textarea-script-N-between-Rs-ref.html
new file mode 100644
index 0000000000..e523313252
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-textarea-script-N-between-Rs-ref.html
@@ -0,0 +1,60 @@
+
+
+  
+    
+    
+    
+    
+  
+  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Test passes if the two boxes below look exactly the same.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      Key to entities used below:
+        א - The Hebrew letter Alef (strongly RTL).
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+  
+
diff --git a/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-textarea-script-N-between-Rs.html b/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-textarea-script-N-between-Rs.html
new file mode 100644
index 0000000000..f5e53667e5
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-textarea-script-N-between-Rs.html
@@ -0,0 +1,84 @@
+
+
+  
+    
+    HTML Test: textarea with dir=auto, script assigns to all-N between all-Rs
+    
+    
+    
+    
+    
+    
+    
+  
+  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Test passes if the two boxes below look exactly the same.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      Key to entities used below:
+        א - The Hebrew letter Alef (strongly RTL).
+      This test makes sure that the direction is set correctly for a textarea whose value is set
+      dynamically by script.
+      We use text-align:left because neither the dir="auto" nor the unicode-bidi:plaintext
+      specification states whether text-align:start and text-align:end should obey the paragraph
+      direction or the direction property in a unicode-bidi:plaintext element.
+      The ...! paragraph, being neutral, is supposed to be displayed LTR (i.e. as ...!, not as !...)
+      despite both the paragraph before it and the paragraph after it being all-RTL, which makes the
+      element as a whole RTL.
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+  
+
diff --git a/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-textarea-script-mixed-ref.html b/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-textarea-script-mixed-ref.html
new file mode 100644
index 0000000000..a5a84480f6
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-textarea-script-mixed-ref.html
@@ -0,0 +1,64 @@
+
+
+  
+    
+    
+    
+    
+  
+  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Test passes if the two boxes below look exactly the same.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+  
+
diff --git a/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-textarea-script-mixed.html b/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-textarea-script-mixed.html
new file mode 100644
index 0000000000..f0c6d4fe44
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/elements/global-attributes/dir_auto-textarea-script-mixed.html
@@ -0,0 +1,100 @@
+
+
+  
+    
+    HTML Test: textarea with dir=auto, script assigns to mixed L and R paragraphs
+    
+    
+    
+    
+    
+    
+    
+  
+  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Test passes if the two boxes below look exactly the same.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      Key to entities used below:
+        ‎ - LRM, the invisible left-to-right mark (strongly LTR).
+        ‏ - RLM, the invisible right-to-left mark (strongly RTL).
+      This test makes sure that the direction is set correctly for a textarea whose value is set
+      dynamically by script.
+      We use text-align:left because neither the dir="auto" nor the unicode-bidi:plaintext
+      specification states whether text-align:start and text-align:end should obey the paragraph
+      direction or the direction property in a unicode-bidi:plaintext element.
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+        
+      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+  
+
diff --git a/testing/web-platform/tests/html/dom/elements/global-attributes/document-dir.html b/testing/web-platform/tests/html/dom/elements/global-attributes/document-dir.html
new file mode 100644
index 0000000000..675b4bc9d9
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/elements/global-attributes/document-dir.html
@@ -0,0 +1,26 @@
+
+
+document.dir
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
diff --git a/testing/web-platform/tests/html/dom/elements/global-attributes/id-attribute.html b/testing/web-platform/tests/html/dom/elements/global-attributes/id-attribute.html
new file mode 100644
index 0000000000..660a7274a3
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/elements/global-attributes/id-attribute.html
@@ -0,0 +1,130 @@
+
+
+
+The id attribute
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  The id attribute
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/dom/elements/global-attributes/id-name-specialcase.html b/testing/web-platform/tests/html/dom/elements/global-attributes/id-name-specialcase.html
new file mode 100644
index 0000000000..77e4100b70
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/elements/global-attributes/id-name-specialcase.html
@@ -0,0 +1,30 @@
+
+HTML5: test id with none pure alpha characters 
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+  
+  
+  
+  
+  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
diff --git a/testing/web-platform/tests/html/dom/elements/global-attributes/id-name.html b/testing/web-platform/tests/html/dom/elements/global-attributes/id-name.html
new file mode 100644
index 0000000000..7fdac993b2
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/elements/global-attributes/id-name.html
@@ -0,0 +1,17 @@
+
+id and name attributes and getElementById
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
diff --git a/testing/web-platform/tests/html/dom/elements/global-attributes/lang-xmllang-01-ref.html b/testing/web-platform/tests/html/dom/elements/global-attributes/lang-xmllang-01-ref.html
new file mode 100644
index 0000000000..1606bca215
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/elements/global-attributes/lang-xmllang-01-ref.html
@@ -0,0 +1,20 @@
+
+Languages
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  All lines below should have a green background.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  {}{lang}{en}
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  {}{xml:lang}{en}
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Parent: {}{lang}{en}
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Parent: {}{xml:lang}{en}
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  {xml}{lang}{en}
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  {xml}{lang}{en} - {lang}{de}
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  {xml}{lang}{de} - {lang}{en}
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
diff --git a/testing/web-platform/tests/html/dom/elements/global-attributes/lang-xmllang-01.html b/testing/web-platform/tests/html/dom/elements/global-attributes/lang-xmllang-01.html
new file mode 100644
index 0000000000..9538f15ca8
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/elements/global-attributes/lang-xmllang-01.html
@@ -0,0 +1,58 @@
+
+Languages
+
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  All lines below should have a green background.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  {}{lang}{en}
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  {}{xml:lang}{en}
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Parent: {}{lang}{en}
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Parent: {}{xml:lang}{en}
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
diff --git a/testing/web-platform/tests/html/dom/elements/global-attributes/lang-xyzzy-ref.html b/testing/web-platform/tests/html/dom/elements/global-attributes/lang-xyzzy-ref.html
new file mode 100644
index 0000000000..b2037182b9
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/elements/global-attributes/lang-xyzzy-ref.html
@@ -0,0 +1,9 @@
+
+Invalid languages
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ABC
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
diff --git a/testing/web-platform/tests/html/dom/elements/global-attributes/lang-xyzzy.html b/testing/web-platform/tests/html/dom/elements/global-attributes/lang-xyzzy.html
new file mode 100644
index 0000000000..d6e6aeb647
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/elements/global-attributes/lang-xyzzy.html
@@ -0,0 +1,12 @@
+
+Invalid languages
+
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ABC
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
diff --git a/testing/web-platform/tests/html/dom/elements/global-attributes/mapped-attribute-adopt-001.html b/testing/web-platform/tests/html/dom/elements/global-attributes/mapped-attribute-adopt-001.html
new file mode 100644
index 0000000000..66ff3d64f1
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/elements/global-attributes/mapped-attribute-adopt-001.html
@@ -0,0 +1,23 @@
+
+Adoption doesn't mess with mapped attributes
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/html/dom/elements/global-attributes/style-01-ref.html b/testing/web-platform/tests/html/dom/elements/global-attributes/style-01-ref.html
new file mode 100644
index 0000000000..be8175e61d
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/elements/global-attributes/style-01-ref.html
@@ -0,0 +1,24 @@
+
+The style attribute
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  This line should have a green background.
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  This line should have a green background.
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  This line should have a green background.
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  This line should have a green background.
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  This line should have a green background.
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  This line should have a green background.
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  This line should have a green background.
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  This line should have a green background.
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  This line should have a green background.
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  This line should have a green background.
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  This line should have a green background.
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  This line should have a green background.
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
diff --git a/testing/web-platform/tests/html/dom/elements/global-attributes/style-01.html b/testing/web-platform/tests/html/dom/elements/global-attributes/style-01.html
new file mode 100644
index 0000000000..c0e0995806
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/elements/global-attributes/style-01.html
@@ -0,0 +1,26 @@
+
+The style attribute
+
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  This line should have a green background.
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  This line should have a green background.
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  This line should have a green background.
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  This line should have a green background.
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  This line should have a green background.
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  This line should have a green background.
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  This line should have a green background.
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  This line should have a green background.
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  This line should have a green background.
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  This line should have a green background.
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  This line should have a green background.
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  This line should have a green background.
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
diff --git a/testing/web-platform/tests/html/dom/elements/global-attributes/the-anchor-attribute-001.tentative.html b/testing/web-platform/tests/html/dom/elements/global-attributes/the-anchor-attribute-001.tentative.html
new file mode 100644
index 0000000000..c9faa6908a
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/elements/global-attributes/the-anchor-attribute-001.tentative.html
@@ -0,0 +1,39 @@
+
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
diff --git a/testing/web-platform/tests/html/dom/elements/global-attributes/the-anchor-attribute-002.tentative.html b/testing/web-platform/tests/html/dom/elements/global-attributes/the-anchor-attribute-002.tentative.html
new file mode 100644
index 0000000000..a1a237a2ee
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/elements/global-attributes/the-anchor-attribute-002.tentative.html
@@ -0,0 +1,50 @@
+
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
diff --git a/testing/web-platform/tests/html/dom/elements/global-attributes/the-lang-attribute-001.html b/testing/web-platform/tests/html/dom/elements/global-attributes/the-lang-attribute-001.html
new file mode 100644
index 0000000000..c2966f3620
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/elements/global-attributes/the-lang-attribute-001.html
@@ -0,0 +1,41 @@
+
+
+
+
+lang attribute in html tag
+
+
+
+
+
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  This test failed because it relies on :lang for results, but :lang is not supported by this browser.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
+
diff --git a/testing/web-platform/tests/html/dom/elements/global-attributes/the-lang-attribute-002.html b/testing/web-platform/tests/html/dom/elements/global-attributes/the-lang-attribute-002.html
new file mode 100644
index 0000000000..205bc35f2d
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/elements/global-attributes/the-lang-attribute-002.html
@@ -0,0 +1,41 @@
+
+
+
+
+xml:lang attribute in html tag
+
+
+
+
+
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  This test failed because it relies on :lang for results, but :lang is not supported by this browser.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
+
diff --git a/testing/web-platform/tests/html/dom/elements/global-attributes/the-lang-attribute-003.html b/testing/web-platform/tests/html/dom/elements/global-attributes/the-lang-attribute-003.html
new file mode 100644
index 0000000000..717aa12e68
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/elements/global-attributes/the-lang-attribute-003.html
@@ -0,0 +1,41 @@
+
+
+
+
+HTTP header
+
+
+
+
+
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  This test failed because it relies on :lang for results, but :lang is not supported by this browser.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
+
diff --git a/testing/web-platform/tests/html/dom/elements/global-attributes/the-lang-attribute-003.html.headers b/testing/web-platform/tests/html/dom/elements/global-attributes/the-lang-attribute-003.html.headers
new file mode 100644
index 0000000000..0c47ecd4fa
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/elements/global-attributes/the-lang-attribute-003.html.headers
@@ -0,0 +1 @@
+Content-Language: ko
diff --git a/testing/web-platform/tests/html/dom/elements/global-attributes/the-lang-attribute-004.html b/testing/web-platform/tests/html/dom/elements/global-attributes/the-lang-attribute-004.html
new file mode 100644
index 0000000000..ff36f75add
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/elements/global-attributes/the-lang-attribute-004.html
@@ -0,0 +1,42 @@
+
+
+
+
+ 
+pragma-set default
+
+
+
+
+
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  This test failed because it relies on :lang for results, but :lang is not supported by this browser.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
+
diff --git a/testing/web-platform/tests/html/dom/elements/global-attributes/the-lang-attribute-005.html b/testing/web-platform/tests/html/dom/elements/global-attributes/the-lang-attribute-005.html
new file mode 100644
index 0000000000..63fb8e3bbb
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/elements/global-attributes/the-lang-attribute-005.html
@@ -0,0 +1,41 @@
+
+
+
+
+HTTP header and html lang
+
+
+
+
+
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  This test failed because it relies on :lang for results, but :lang is not supported by this browser.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
+
diff --git a/testing/web-platform/tests/html/dom/elements/global-attributes/the-lang-attribute-005.html.headers b/testing/web-platform/tests/html/dom/elements/global-attributes/the-lang-attribute-005.html.headers
new file mode 100644
index 0000000000..1b971b697a
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/elements/global-attributes/the-lang-attribute-005.html.headers
@@ -0,0 +1 @@
+Content-Language: zh
diff --git a/testing/web-platform/tests/html/dom/elements/global-attributes/the-lang-attribute-006.html b/testing/web-platform/tests/html/dom/elements/global-attributes/the-lang-attribute-006.html
new file mode 100644
index 0000000000..ede4912025
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/elements/global-attributes/the-lang-attribute-006.html
@@ -0,0 +1,42 @@
+
+
+
+
+ 
+HTTP header and meta element
+
+
+
+
+
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  This test failed because it relies on :lang for results, but :lang is not supported by this browser.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
+
diff --git a/testing/web-platform/tests/html/dom/elements/global-attributes/the-lang-attribute-006.html.headers b/testing/web-platform/tests/html/dom/elements/global-attributes/the-lang-attribute-006.html.headers
new file mode 100644
index 0000000000..1b971b697a
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/elements/global-attributes/the-lang-attribute-006.html.headers
@@ -0,0 +1 @@
+Content-Language: zh
diff --git a/testing/web-platform/tests/html/dom/elements/global-attributes/the-lang-attribute-007.html b/testing/web-platform/tests/html/dom/elements/global-attributes/the-lang-attribute-007.html
new file mode 100644
index 0000000000..8fafef036f
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/elements/global-attributes/the-lang-attribute-007.html
@@ -0,0 +1,42 @@
+
+
+
+
+ 
+html lang and meta elements
+
+
+
+
+
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  This test failed because it relies on :lang for results, but :lang is not supported by this browser.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
+
diff --git a/testing/web-platform/tests/html/dom/elements/global-attributes/the-lang-attribute-008.html b/testing/web-platform/tests/html/dom/elements/global-attributes/the-lang-attribute-008.html
new file mode 100644
index 0000000000..3be54154c1
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/elements/global-attributes/the-lang-attribute-008.html
@@ -0,0 +1,41 @@
+
+
+
+
+lang="..." vs lang=""
+
+
+
+
+
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  This test failed because it relies on :lang for results, but :lang is not supported by this browser.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
+
diff --git a/testing/web-platform/tests/html/dom/elements/global-attributes/the-lang-attribute-009.html b/testing/web-platform/tests/html/dom/elements/global-attributes/the-lang-attribute-009.html
new file mode 100644
index 0000000000..3a927028ef
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/elements/global-attributes/the-lang-attribute-009.html
@@ -0,0 +1,41 @@
+
+
+
+
+lang="" vs HTTP
+
+
+
+
+
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  This test failed because it relies on :lang for results, but :lang is not supported by this browser.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
+
diff --git a/testing/web-platform/tests/html/dom/elements/global-attributes/the-lang-attribute-009.html.headers b/testing/web-platform/tests/html/dom/elements/global-attributes/the-lang-attribute-009.html.headers
new file mode 100644
index 0000000000..0c47ecd4fa
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/elements/global-attributes/the-lang-attribute-009.html.headers
@@ -0,0 +1 @@
+Content-Language: ko
diff --git a/testing/web-platform/tests/html/dom/elements/global-attributes/the-lang-attribute-010.html b/testing/web-platform/tests/html/dom/elements/global-attributes/the-lang-attribute-010.html
new file mode 100644
index 0000000000..2c21737471
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/elements/global-attributes/the-lang-attribute-010.html
@@ -0,0 +1,42 @@
+
+
+
+
+ 
+lang="" vs meta Content-Language
+
+
+
+
+
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  This test failed because it relies on :lang for results, but :lang is not supported by this browser.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
+
diff --git a/testing/web-platform/tests/html/dom/elements/global-attributes/the-lang-attribute-011.html.headers b/testing/web-platform/tests/html/dom/elements/global-attributes/the-lang-attribute-011.html.headers
new file mode 100644
index 0000000000..827b4348f4
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/elements/global-attributes/the-lang-attribute-011.html.headers
@@ -0,0 +1 @@
+Content-Language: ko,zh,ja
diff --git a/testing/web-platform/tests/html/dom/elements/global-attributes/the-translate-attribute-007.html b/testing/web-platform/tests/html/dom/elements/global-attributes/the-translate-attribute-007.html
new file mode 100644
index 0000000000..abce2858a2
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/elements/global-attributes/the-translate-attribute-007.html
@@ -0,0 +1,29 @@
+
+
+
+
+no translate attribute
+
+
+
+
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
+
diff --git a/testing/web-platform/tests/html/dom/elements/global-attributes/the-translate-attribute-008.html b/testing/web-platform/tests/html/dom/elements/global-attributes/the-translate-attribute-008.html
new file mode 100644
index 0000000000..70486fe59b
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/elements/global-attributes/the-translate-attribute-008.html
@@ -0,0 +1,29 @@
+
+
+
+
+translate=yes
+
+
+
+
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
+
diff --git a/testing/web-platform/tests/html/dom/elements/global-attributes/the-translate-attribute-009.html b/testing/web-platform/tests/html/dom/elements/global-attributes/the-translate-attribute-009.html
new file mode 100644
index 0000000000..1ab49b0307
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/elements/global-attributes/the-translate-attribute-009.html
@@ -0,0 +1,29 @@
+
+
+
+
+translate=no
+
+
+
+
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
+
diff --git a/testing/web-platform/tests/html/dom/elements/global-attributes/the-translate-attribute-010.html b/testing/web-platform/tests/html/dom/elements/global-attributes/the-translate-attribute-010.html
new file mode 100644
index 0000000000..c45965e004
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/elements/global-attributes/the-translate-attribute-010.html
@@ -0,0 +1,29 @@
+
+
+
+
+translate inherits no
+
+
+
+
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
+
diff --git a/testing/web-platform/tests/html/dom/elements/global-attributes/the-translate-attribute-011.html b/testing/web-platform/tests/html/dom/elements/global-attributes/the-translate-attribute-011.html
new file mode 100644
index 0000000000..101f70e2e7
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/elements/global-attributes/the-translate-attribute-011.html
@@ -0,0 +1,29 @@
+
+
+
+
+translate=yes inside translate=no
+
+
+
+
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
+
diff --git a/testing/web-platform/tests/html/dom/elements/global-attributes/the-translate-attribute-012.html b/testing/web-platform/tests/html/dom/elements/global-attributes/the-translate-attribute-012.html
new file mode 100644
index 0000000000..1d81cfd8b1
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/elements/global-attributes/the-translate-attribute-012.html
@@ -0,0 +1,29 @@
+
+
+
+
+translate=""
+
+
+
+
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
+
diff --git a/testing/web-platform/tests/html/dom/elements/global-attributes/title-manual.html b/testing/web-platform/tests/html/dom/elements/global-attributes/title-manual.html
new file mode 100644
index 0000000000..d781172bba
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/elements/global-attributes/title-manual.html
@@ -0,0 +1,8 @@
+
+The title attribute
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Hover each word below. The tooltip for each of them should be "PASS".
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  div   dfn abbr menuitem
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
diff --git a/testing/web-platform/tests/html/dom/elements/global-attributes/translate-enumerated-ascii-case-insensitive.html b/testing/web-platform/tests/html/dom/elements/global-attributes/translate-enumerated-ascii-case-insensitive.html
new file mode 100644
index 0000000000..dedf559b98
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/elements/global-attributes/translate-enumerated-ascii-case-insensitive.html
@@ -0,0 +1,26 @@
+
+
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
diff --git a/testing/web-platform/tests/html/dom/elements/global-attributes/translate-inherit-no-parent-element.html b/testing/web-platform/tests/html/dom/elements/global-attributes/translate-inherit-no-parent-element.html
new file mode 100644
index 0000000000..370225c7f7
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/elements/global-attributes/translate-inherit-no-parent-element.html
@@ -0,0 +1,33 @@
+
+
+The translate attribute inherit state when there's no parent element
+
+
+
diff --git a/testing/web-platform/tests/html/dom/elements/global-attributes/translate-non-html-translation-mode.html b/testing/web-platform/tests/html/dom/elements/global-attributes/translate-non-html-translation-mode.html
new file mode 100644
index 0000000000..3bd7f6ace9
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/elements/global-attributes/translate-non-html-translation-mode.html
@@ -0,0 +1,46 @@
+
+
+Non-HTML elements have a translation mode
+
+
+
diff --git a/testing/web-platform/tests/html/dom/elements/images/bypass-cache-revalidation.html b/testing/web-platform/tests/html/dom/elements/images/bypass-cache-revalidation.html
new file mode 100644
index 0000000000..38cdd876da
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/elements/images/bypass-cache-revalidation.html
@@ -0,0 +1,37 @@
+
+Cached images can bypass revalidation
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
+
diff --git a/testing/web-platform/tests/html/dom/elements/images/image.py b/testing/web-platform/tests/html/dom/elements/images/image.py
new file mode 100644
index 0000000000..b8bb34e618
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/elements/images/image.py
@@ -0,0 +1,28 @@
+import os.path
+
+from wptserve.utils import isomorphic_decode
+
+def main(request, response):
+
+    key = request.GET[b'id']
+    alreadyServedRequest = False
+    try:
+      alreadyServedRequest = request.server.stash.take(key)
+    except (KeyError, ValueError) as e:
+      pass
+
+    if alreadyServedRequest:
+      body = open(os.path.join(os.path.dirname(isomorphic_decode(__file__)), u"../../../../images/red.png"), u"rb").read()
+    else:
+      request.server.stash.put(key, True);
+      body = open(os.path.join(os.path.dirname(isomorphic_decode(__file__)), u"../../../../images/green.png"), u"rb").read()
+      pass
+
+    response.writer.write_status(200)
+    response.writer.write_header(b"etag", b"abcdef")
+    response.writer.write_header(b"content-length", len(body))
+    response.writer.write_header(b"content-type", b"image/png")
+    response.writer.write_header(b"cache-control", b"public, max-age=31536000, no-cache")
+    response.writer.end_headers()
+
+    response.writer.write(body)
diff --git a/testing/web-platform/tests/html/dom/elements/name-content-attribute-and-property.html b/testing/web-platform/tests/html/dom/elements/name-content-attribute-and-property.html
new file mode 100644
index 0000000000..3319c1875b
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/elements/name-content-attribute-and-property.html
@@ -0,0 +1,44 @@
+
+Only certain HTML elements reflect the name content attribute as a property
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
diff --git a/testing/web-platform/tests/html/dom/elements/requirements-relating-to-bidirectional-algorithm-formatting-characters/dir-isolation-001a.html b/testing/web-platform/tests/html/dom/elements/requirements-relating-to-bidirectional-algorithm-formatting-characters/dir-isolation-001a.html
new file mode 100644
index 0000000000..16a308a2f7
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/elements/requirements-relating-to-bidirectional-algorithm-formatting-characters/dir-isolation-001a.html
@@ -0,0 +1,36 @@
+
+
+
+
+The dir attribute: isolated from following number, opposite direction
+
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Test passes if the two boxes are identical.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  א 3
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  a 3
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  א 3
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  a 3
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ‭א 3‬
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ‭a 3‬
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ‭3 א‬
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ‭3 a‬
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
\ No newline at end of file
diff --git a/testing/web-platform/tests/html/dom/elements/requirements-relating-to-bidirectional-algorithm-formatting-characters/dir-isolation-001b.html b/testing/web-platform/tests/html/dom/elements/requirements-relating-to-bidirectional-algorithm-formatting-characters/dir-isolation-001b.html
new file mode 100644
index 0000000000..197f49aa24
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/elements/requirements-relating-to-bidirectional-algorithm-formatting-characters/dir-isolation-001b.html
@@ -0,0 +1,36 @@
+
+
+
+
+The dir attribute: isolated from following number, auto
+
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Test passes if the two boxes are identical.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  א 3
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  a 3
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  א 3
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  a 3
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ‭א 3‬
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ‭a 3‬
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ‭3 א‬
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ‭3 a‬
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
\ No newline at end of file
diff --git a/testing/web-platform/tests/html/dom/elements/requirements-relating-to-bidirectional-algorithm-formatting-characters/dir-isolation-001c.html b/testing/web-platform/tests/html/dom/elements/requirements-relating-to-bidirectional-algorithm-formatting-characters/dir-isolation-001c.html
new file mode 100644
index 0000000000..95ec6c739d
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/elements/requirements-relating-to-bidirectional-algorithm-formatting-characters/dir-isolation-001c.html
@@ -0,0 +1,36 @@
+
+
+
+
+The dir attribute: isolated from following number, same direction
+
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Test passes if the two boxes are identical.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  א 3
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  a 3
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  א 3
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  a 3
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ‭א 3‬
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ‭a 3‬
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ‭3 א‬
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ‭3 a‬
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
\ No newline at end of file
diff --git a/testing/web-platform/tests/html/dom/elements/requirements-relating-to-bidirectional-algorithm-formatting-characters/dir-isolation-002a.html b/testing/web-platform/tests/html/dom/elements/requirements-relating-to-bidirectional-algorithm-formatting-characters/dir-isolation-002a.html
new file mode 100644
index 0000000000..7b7029a269
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/elements/requirements-relating-to-bidirectional-algorithm-formatting-characters/dir-isolation-002a.html
@@ -0,0 +1,36 @@
+
+
+
+
+The dir attribute: isolated from following number with intervening neutrals, opposite direction
+
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Test passes if the two boxes are identical.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  > א > > 3 >
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  > a > > 3 >
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  > א > > 3 >
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  > a > > 3 >
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ‭< א < > 3 >‬
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ‭< a < > 3 >‬
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ‭< 3 < > א >‬
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ‭< 3 < > a >‬
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
\ No newline at end of file
diff --git a/testing/web-platform/tests/html/dom/elements/requirements-relating-to-bidirectional-algorithm-formatting-characters/dir-isolation-002b.html b/testing/web-platform/tests/html/dom/elements/requirements-relating-to-bidirectional-algorithm-formatting-characters/dir-isolation-002b.html
new file mode 100644
index 0000000000..d448de5080
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/elements/requirements-relating-to-bidirectional-algorithm-formatting-characters/dir-isolation-002b.html
@@ -0,0 +1,36 @@
+
+
+
+
+The dir attribute: isolated from following number with intervening neutrals, auto
+
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Test passes if the two boxes are identical.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  > א > > 3 >
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  > a > > 3 >
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  > א > > 3 >
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  > a > > 3 >
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ‭< א < > 3 >‬
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ‭> a > > 3 >‬
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ‭< 3 < < א <‬
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ‭< 3 < > a >‬
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
\ No newline at end of file
diff --git a/testing/web-platform/tests/html/dom/elements/requirements-relating-to-bidirectional-algorithm-formatting-characters/dir-isolation-002c.html b/testing/web-platform/tests/html/dom/elements/requirements-relating-to-bidirectional-algorithm-formatting-characters/dir-isolation-002c.html
new file mode 100644
index 0000000000..e88fb1c845
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/elements/requirements-relating-to-bidirectional-algorithm-formatting-characters/dir-isolation-002c.html
@@ -0,0 +1,36 @@
+
+
+
+
+The dir attribute: isolated from following number with intervening neutrals, same direction
+
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Test passes if the two boxes are identical.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  > א > > 3 >
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  > a > > 3 >
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  > א > > 3 >
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  > a > > 3 >
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ‭> א > > 3 >‬
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ‭> a > > 3 >‬
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ‭< 3 < < א <‬
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ‭< 3 < < a <‬
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
\ No newline at end of file
diff --git a/testing/web-platform/tests/html/dom/elements/requirements-relating-to-bidirectional-algorithm-formatting-characters/dir-isolation-003a.html b/testing/web-platform/tests/html/dom/elements/requirements-relating-to-bidirectional-algorithm-formatting-characters/dir-isolation-003a.html
new file mode 100644
index 0000000000..9cf65c8184
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/elements/requirements-relating-to-bidirectional-algorithm-formatting-characters/dir-isolation-003a.html
@@ -0,0 +1,36 @@
+
+
+
+
+The dir attribute: isolated from immediately following number, opposite direction
+
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Test passes if the two boxes are identical.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  א3
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  a3
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  א3
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  a3
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ‭א3‬
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ‭a3‬
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ‭3א‬
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ‭3a‬
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
\ No newline at end of file
diff --git a/testing/web-platform/tests/html/dom/elements/requirements-relating-to-bidirectional-algorithm-formatting-characters/dir-isolation-003b.html b/testing/web-platform/tests/html/dom/elements/requirements-relating-to-bidirectional-algorithm-formatting-characters/dir-isolation-003b.html
new file mode 100644
index 0000000000..2c6b553089
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/elements/requirements-relating-to-bidirectional-algorithm-formatting-characters/dir-isolation-003b.html
@@ -0,0 +1,36 @@
+
+
+
+
+The dir attribute: isolated from immediately following number, auto
+
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Test passes if the two boxes are identical.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  א3
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  a3
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  א3
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  a3
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ‭א3‬
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ‭a3‬
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ‭3א‬
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ‭3a‬
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
\ No newline at end of file
diff --git a/testing/web-platform/tests/html/dom/elements/requirements-relating-to-bidirectional-algorithm-formatting-characters/dir-isolation-003c.html b/testing/web-platform/tests/html/dom/elements/requirements-relating-to-bidirectional-algorithm-formatting-characters/dir-isolation-003c.html
new file mode 100644
index 0000000000..ac8735122b
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/elements/requirements-relating-to-bidirectional-algorithm-formatting-characters/dir-isolation-003c.html
@@ -0,0 +1,36 @@
+
+
+
+
+The dir attribute: isolated from immediately following number, same direction
+
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Test passes if the two boxes are identical.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  א3
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  a3
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  א3
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  a3
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ‭א3‬
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ‭a3‬
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ‭3א‬
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ‭3a‬
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
\ No newline at end of file
diff --git a/testing/web-platform/tests/html/dom/elements/requirements-relating-to-bidirectional-algorithm-formatting-characters/dir-isolation-004a.html b/testing/web-platform/tests/html/dom/elements/requirements-relating-to-bidirectional-algorithm-formatting-characters/dir-isolation-004a.html
new file mode 100644
index 0000000000..27a674ccdc
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/elements/requirements-relating-to-bidirectional-algorithm-formatting-characters/dir-isolation-004a.html
@@ -0,0 +1,36 @@
+
+
+
+
+The dir attribute: numbers isolated from preceding text, opposite direction
+
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Test passes if the two boxes are identical.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  א 3
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  a 3
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  א 3
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  a 3
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ‭א 3‬
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ‭a 3‬
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ‭3 א‬
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ‭3 a‬
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
\ No newline at end of file
diff --git a/testing/web-platform/tests/html/dom/elements/requirements-relating-to-bidirectional-algorithm-formatting-characters/dir-isolation-004b.html b/testing/web-platform/tests/html/dom/elements/requirements-relating-to-bidirectional-algorithm-formatting-characters/dir-isolation-004b.html
new file mode 100644
index 0000000000..6fe74393ae
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/elements/requirements-relating-to-bidirectional-algorithm-formatting-characters/dir-isolation-004b.html
@@ -0,0 +1,36 @@
+
+
+
+
+The dir attribute: numbers isolated from preceding text, auto
+
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Test passes if the two boxes are identical.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  א 3
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  a 3
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  א 3
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  a 3
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ‭א 3‬
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ‭a 3‬
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ‭3 א‬
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ‭3 a‬
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
\ No newline at end of file
diff --git a/testing/web-platform/tests/html/dom/elements/requirements-relating-to-bidirectional-algorithm-formatting-characters/dir-isolation-004c.html b/testing/web-platform/tests/html/dom/elements/requirements-relating-to-bidirectional-algorithm-formatting-characters/dir-isolation-004c.html
new file mode 100644
index 0000000000..43d994b2f0
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/elements/requirements-relating-to-bidirectional-algorithm-formatting-characters/dir-isolation-004c.html
@@ -0,0 +1,36 @@
+
+
+
+
+The dir attribute: numbers isolated from preceding text, same direction
+
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Test passes if the two boxes are identical.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  א 3
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  a 3
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  א 3
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  a 3
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ‭א 3‬
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ‭a 3‬
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ‭3 א‬
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ‭3 a‬
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
\ No newline at end of file
diff --git a/testing/web-platform/tests/html/dom/elements/requirements-relating-to-bidirectional-algorithm-formatting-characters/dir-isolation-005a.html b/testing/web-platform/tests/html/dom/elements/requirements-relating-to-bidirectional-algorithm-formatting-characters/dir-isolation-005a.html
new file mode 100644
index 0000000000..2fbddbd71f
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/elements/requirements-relating-to-bidirectional-algorithm-formatting-characters/dir-isolation-005a.html
@@ -0,0 +1,36 @@
+
+
+
+
+The dir attribute: isolated from following text, opposite direction
+
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Test passes if the two boxes are identical.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  א ב...
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  a b...
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  a b...
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  א ב...
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ‭א ב...‬
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ‭a b...‬
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ‭...b a‬
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ‭...ב א‬
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
\ No newline at end of file
diff --git a/testing/web-platform/tests/html/dom/elements/requirements-relating-to-bidirectional-algorithm-formatting-characters/dir-isolation-005b.html b/testing/web-platform/tests/html/dom/elements/requirements-relating-to-bidirectional-algorithm-formatting-characters/dir-isolation-005b.html
new file mode 100644
index 0000000000..d61e258f21
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/elements/requirements-relating-to-bidirectional-algorithm-formatting-characters/dir-isolation-005b.html
@@ -0,0 +1,36 @@
+
+
+
+
+The dir attribute: isolated from following text, auto
+
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Test passes if the two boxes are identical.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  א ב...
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  a b...
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  a b...
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  א ב...
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ‭א ב...‬
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ‭a b...‬
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ‭...b a‬
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ‭...ב א‬
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
\ No newline at end of file
diff --git a/testing/web-platform/tests/html/dom/elements/requirements-relating-to-bidirectional-algorithm-formatting-characters/dir-isolation-005c.html b/testing/web-platform/tests/html/dom/elements/requirements-relating-to-bidirectional-algorithm-formatting-characters/dir-isolation-005c.html
new file mode 100644
index 0000000000..d544275b2f
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/elements/requirements-relating-to-bidirectional-algorithm-formatting-characters/dir-isolation-005c.html
@@ -0,0 +1,36 @@
+
+
+
+
+The dir attribute: isolated from following text, same direction
+
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Test passes if the two boxes are identical.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  א ב...
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  a b...
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  a b...
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  א ב...
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ‭א ב...‬
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ‭a b...‬
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ‭...b a‬
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ‭...ב א‬
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
\ No newline at end of file
diff --git a/testing/web-platform/tests/html/dom/elements/requirements-relating-to-bidirectional-algorithm-formatting-characters/dir-isolation-006a.html b/testing/web-platform/tests/html/dom/elements/requirements-relating-to-bidirectional-algorithm-formatting-characters/dir-isolation-006a.html
new file mode 100644
index 0000000000..430df00d9f
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/elements/requirements-relating-to-bidirectional-algorithm-formatting-characters/dir-isolation-006a.html
@@ -0,0 +1,32 @@
+
+
+
+
+The dir attribute: isolated from following text with intervening neutrals, opposite direction
+
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Test passes if the two boxes are identical.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  > א > > ב >...
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  > a > > b >...
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ‭< א < > ב >...‬
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ‭...< b < > a >‬
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
\ No newline at end of file
diff --git a/testing/web-platform/tests/html/dom/elements/requirements-relating-to-bidirectional-algorithm-formatting-characters/dir-isolation-006b.html b/testing/web-platform/tests/html/dom/elements/requirements-relating-to-bidirectional-algorithm-formatting-characters/dir-isolation-006b.html
new file mode 100644
index 0000000000..a6da487152
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/elements/requirements-relating-to-bidirectional-algorithm-formatting-characters/dir-isolation-006b.html
@@ -0,0 +1,32 @@
+
+
+
+
+The dir attribute: isolated from following text with intervening neutrals, auto
+
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Test passes if the two boxes are identical.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  > א > > ב >...
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  > a > > b >...
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ‭< א < > ב >...‬
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ‭...< b < > a >‬
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
\ No newline at end of file
diff --git a/testing/web-platform/tests/html/dom/elements/requirements-relating-to-bidirectional-algorithm-formatting-characters/dir-isolation-006c.html b/testing/web-platform/tests/html/dom/elements/requirements-relating-to-bidirectional-algorithm-formatting-characters/dir-isolation-006c.html
new file mode 100644
index 0000000000..3407d37f38
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/elements/requirements-relating-to-bidirectional-algorithm-formatting-characters/dir-isolation-006c.html
@@ -0,0 +1,32 @@
+
+
+
+
+The dir attribute: isolated from following text with intervening neutrals, same direction
+
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Test passes if the two boxes are identical.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  > א > > ב >...
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  > a > > b >...
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ‭> א > > ב >...‬
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ‭...< b < < a <‬
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
\ No newline at end of file
diff --git a/testing/web-platform/tests/html/dom/elements/requirements-relating-to-bidirectional-algorithm-formatting-characters/dir-isolation-007a.html b/testing/web-platform/tests/html/dom/elements/requirements-relating-to-bidirectional-algorithm-formatting-characters/dir-isolation-007a.html
new file mode 100644
index 0000000000..e8b37b1b97
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/elements/requirements-relating-to-bidirectional-algorithm-formatting-characters/dir-isolation-007a.html
@@ -0,0 +1,36 @@
+
+
+
+
+The dir attribute: isolated from immediately following text, opposite direction
+
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Test passes if the two boxes are identical.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  אב...
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ab...
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ab...
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  אב...
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ‭אב...‬
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ‭ab...‬
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ‭...ba‬
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ‭...בא‬
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
\ No newline at end of file
diff --git a/testing/web-platform/tests/html/dom/elements/requirements-relating-to-bidirectional-algorithm-formatting-characters/dir-isolation-007b.html b/testing/web-platform/tests/html/dom/elements/requirements-relating-to-bidirectional-algorithm-formatting-characters/dir-isolation-007b.html
new file mode 100644
index 0000000000..c54e63de7c
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/elements/requirements-relating-to-bidirectional-algorithm-formatting-characters/dir-isolation-007b.html
@@ -0,0 +1,36 @@
+
+
+
+
+The dir attribute: isolated from immediately following text, auto
+
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Test passes if the two boxes are identical.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  אב...
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ab...
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ab...
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  אב...
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ‭אב...‬
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ‭ab...‬
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ‭...ba‬
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ‭...בא‬
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
\ No newline at end of file
diff --git a/testing/web-platform/tests/html/dom/elements/requirements-relating-to-bidirectional-algorithm-formatting-characters/dir-isolation-007c.html b/testing/web-platform/tests/html/dom/elements/requirements-relating-to-bidirectional-algorithm-formatting-characters/dir-isolation-007c.html
new file mode 100644
index 0000000000..b9c5219b8d
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/elements/requirements-relating-to-bidirectional-algorithm-formatting-characters/dir-isolation-007c.html
@@ -0,0 +1,36 @@
+
+
+
+
+The dir attribute: isolated from immediately following text, same direction
+
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Test passes if the two boxes are identical.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  אב...
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ab...
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ab...
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  אב...
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ‭אב...‬
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ‭ab...‬
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ‭...ba‬
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ‭...בא‬
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
\ No newline at end of file
diff --git a/testing/web-platform/tests/html/dom/elements/requirements-relating-to-bidirectional-algorithm-formatting-characters/dir-isolation-008a.html b/testing/web-platform/tests/html/dom/elements/requirements-relating-to-bidirectional-algorithm-formatting-characters/dir-isolation-008a.html
new file mode 100644
index 0000000000..1455fd552b
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/elements/requirements-relating-to-bidirectional-algorithm-formatting-characters/dir-isolation-008a.html
@@ -0,0 +1,36 @@
+
+
+
+
+The dir attribute: isolated from preceding text, opposite direction
+
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Test passes if the two boxes are identical.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  א ב
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  a b
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  א ב
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  a b
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ‭א ב‬
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ‭a b‬
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ‭ב א‬
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ‭b a‬
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
\ No newline at end of file
diff --git a/testing/web-platform/tests/html/dom/elements/requirements-relating-to-bidirectional-algorithm-formatting-characters/dir-isolation-008b.html b/testing/web-platform/tests/html/dom/elements/requirements-relating-to-bidirectional-algorithm-formatting-characters/dir-isolation-008b.html
new file mode 100644
index 0000000000..f12e6d67bf
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/elements/requirements-relating-to-bidirectional-algorithm-formatting-characters/dir-isolation-008b.html
@@ -0,0 +1,36 @@
+
+
+
+
+The dir attribute: isolated from preceding text, auto
+
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Test passes if the two boxes are identical.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  א ב
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  a b
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  א ב
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  a b
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ‭א ב‬
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ‭a b‬
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ‭ב א‬
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ‭b a‬
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
\ No newline at end of file
diff --git a/testing/web-platform/tests/html/dom/elements/requirements-relating-to-bidirectional-algorithm-formatting-characters/dir-isolation-008c.html b/testing/web-platform/tests/html/dom/elements/requirements-relating-to-bidirectional-algorithm-formatting-characters/dir-isolation-008c.html
new file mode 100644
index 0000000000..b1754cf23e
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/elements/requirements-relating-to-bidirectional-algorithm-formatting-characters/dir-isolation-008c.html
@@ -0,0 +1,36 @@
+
+
+
+
+The dir attribute: isolated from preceding text, same direction
+
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Test passes if the two boxes are identical.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  א ב
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  a b
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  א ב
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  a b
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ‭א ב‬
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ‭a b‬
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ‭ב א‬
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ‭b a‬
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
\ No newline at end of file
diff --git a/testing/web-platform/tests/html/dom/elements/requirements-relating-to-bidirectional-algorithm-formatting-characters/dir-isolation-009a.html b/testing/web-platform/tests/html/dom/elements/requirements-relating-to-bidirectional-algorithm-formatting-characters/dir-isolation-009a.html
new file mode 100644
index 0000000000..63a9706bae
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/elements/requirements-relating-to-bidirectional-algorithm-formatting-characters/dir-isolation-009a.html
@@ -0,0 +1,33 @@
+
+
+
+
+The dir attribute: isolated from surrounding text, opposite direction
+
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Test passes if the two boxes are identical.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  א > > b > > ג...
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  a > > ב > > c...
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ‭ג < < b < < א...‬
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ‭...a > > ב > > c‬
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
diff --git a/testing/web-platform/tests/html/dom/elements/requirements-relating-to-bidirectional-algorithm-formatting-characters/dir-isolation-009b.html b/testing/web-platform/tests/html/dom/elements/requirements-relating-to-bidirectional-algorithm-formatting-characters/dir-isolation-009b.html
new file mode 100644
index 0000000000..57098fa75a
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/elements/requirements-relating-to-bidirectional-algorithm-formatting-characters/dir-isolation-009b.html
@@ -0,0 +1,33 @@
+
+
+
+
+The dir attribute: isolated from surrounding text, auto
+
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Test passes if the two boxes are identical.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  א > > b > > ג...
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  a > > ב > > c...
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ‭ג < > b > < א...‬
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ‭...a > < ב < > c‬
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
diff --git a/testing/web-platform/tests/html/dom/elements/requirements-relating-to-bidirectional-algorithm-formatting-characters/dir-isolation-009c.html b/testing/web-platform/tests/html/dom/elements/requirements-relating-to-bidirectional-algorithm-formatting-characters/dir-isolation-009c.html
new file mode 100644
index 0000000000..4aac3184ee
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/elements/requirements-relating-to-bidirectional-algorithm-formatting-characters/dir-isolation-009c.html
@@ -0,0 +1,33 @@
+
+
+
+
+The dir attribute: isolated from surrounding text, same direction
+
+
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Test passes if the two boxes are identical.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  א > > b > > ג...
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  a > > ב > > c...
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ‭ג < > b > < א...‬
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ‭...a > < ב < > c‬
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
diff --git a/testing/web-platform/tests/html/dom/elements/requirements-relating-to-bidirectional-algorithm-formatting-characters/reference/dir-isolation-001-ref.html b/testing/web-platform/tests/html/dom/elements/requirements-relating-to-bidirectional-algorithm-formatting-characters/reference/dir-isolation-001-ref.html
new file mode 100644
index 0000000000..b5882eb7a3
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/elements/requirements-relating-to-bidirectional-algorithm-formatting-characters/reference/dir-isolation-001-ref.html
@@ -0,0 +1,16 @@
+
+
+
+
+The dir attribute: isolated from following number, opposite direction
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Test passes if the two boxes are identical.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ‭א 3‬
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ‭a 3‬
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ‭3 א‬
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ‭3 a‬
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ‭א 3‬
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ‭a 3‬
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ‭3 א‬
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ‭3 a‬
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
diff --git a/testing/web-platform/tests/html/dom/elements/requirements-relating-to-bidirectional-algorithm-formatting-characters/reference/dir-isolation-002a-ref.html b/testing/web-platform/tests/html/dom/elements/requirements-relating-to-bidirectional-algorithm-formatting-characters/reference/dir-isolation-002a-ref.html
new file mode 100644
index 0000000000..f28559b5a1
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/elements/requirements-relating-to-bidirectional-algorithm-formatting-characters/reference/dir-isolation-002a-ref.html
@@ -0,0 +1,16 @@
+
+
+
+
+The dir attribute: isolated from following number with intervening neutrals, opposite direction
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Test passes if the two boxes are identical.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ‭< א < > 3 >‬
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ‭< a < > 3 >‬
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ‭< 3 < > א >‬
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ‭< 3 < > a >‬
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ‭< א < > 3 >‬
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ‭< a < > 3 >‬
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ‭< 3 < > א >‬
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ‭< 3 < > a >‬
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
diff --git a/testing/web-platform/tests/html/dom/elements/requirements-relating-to-bidirectional-algorithm-formatting-characters/reference/dir-isolation-002b-ref.html b/testing/web-platform/tests/html/dom/elements/requirements-relating-to-bidirectional-algorithm-formatting-characters/reference/dir-isolation-002b-ref.html
new file mode 100644
index 0000000000..d4eda2189d
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/elements/requirements-relating-to-bidirectional-algorithm-formatting-characters/reference/dir-isolation-002b-ref.html
@@ -0,0 +1,16 @@
+
+
+
+
+The dir attribute: isolated from following number with intervening neutrals, auto
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Test passes if the two boxes are identical.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ‭< א < > 3 >‬
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ‭> a > > 3 >‬
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ‭< 3 < < א <‬
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ‭< 3 < > a >‬
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ‭< א < > 3 >‬
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ‭> a > > 3 >‬
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ‭< 3 < < א <‬
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ‭< 3 < > a >‬
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
diff --git a/testing/web-platform/tests/html/dom/elements/requirements-relating-to-bidirectional-algorithm-formatting-characters/reference/dir-isolation-002c-ref.html b/testing/web-platform/tests/html/dom/elements/requirements-relating-to-bidirectional-algorithm-formatting-characters/reference/dir-isolation-002c-ref.html
new file mode 100644
index 0000000000..6c21d0147d
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/elements/requirements-relating-to-bidirectional-algorithm-formatting-characters/reference/dir-isolation-002c-ref.html
@@ -0,0 +1,16 @@
+
+
+
+
+The dir attribute: isolated from following number with intervening neutrals, same direction
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Test passes if the two boxes are identical.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ‭> א > > 3 >‬
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ‭> a > > 3 >‬
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ‭< 3 < < א <‬
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ‭< 3 < < a <‬
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ‭> א > > 3 >‬
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ‭> a > > 3 >‬
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ‭< 3 < < א <‬
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ‭< 3 < < a <‬
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
diff --git a/testing/web-platform/tests/html/dom/elements/requirements-relating-to-bidirectional-algorithm-formatting-characters/reference/dir-isolation-003-ref.html b/testing/web-platform/tests/html/dom/elements/requirements-relating-to-bidirectional-algorithm-formatting-characters/reference/dir-isolation-003-ref.html
new file mode 100644
index 0000000000..4c29838ee4
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/elements/requirements-relating-to-bidirectional-algorithm-formatting-characters/reference/dir-isolation-003-ref.html
@@ -0,0 +1,16 @@
+
+
+
+
+The dir attribute: isolated from immediately following number, opposite direction
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Test passes if the two boxes are identical.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ‭א3‬
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ‭a3‬
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ‭3א‬
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ‭3a‬
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ‭א3‬
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ‭a3‬
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ‭3א‬
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ‭3a‬
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
diff --git a/testing/web-platform/tests/html/dom/elements/requirements-relating-to-bidirectional-algorithm-formatting-characters/reference/dir-isolation-004-ref.html b/testing/web-platform/tests/html/dom/elements/requirements-relating-to-bidirectional-algorithm-formatting-characters/reference/dir-isolation-004-ref.html
new file mode 100644
index 0000000000..cb83dde584
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/elements/requirements-relating-to-bidirectional-algorithm-formatting-characters/reference/dir-isolation-004-ref.html
@@ -0,0 +1,16 @@
+
+
+
+
+The dir attribute: numbers isolated from preceding text, opposite direction
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Test passes if the two boxes are identical.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ‭א 3‬
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ‭a 3‬
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ‭3 א‬
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ‭3 a‬
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ‭א 3‬
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ‭a 3‬
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ‭3 א‬
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ‭3 a‬
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
diff --git a/testing/web-platform/tests/html/dom/elements/requirements-relating-to-bidirectional-algorithm-formatting-characters/reference/dir-isolation-005-ref.html b/testing/web-platform/tests/html/dom/elements/requirements-relating-to-bidirectional-algorithm-formatting-characters/reference/dir-isolation-005-ref.html
new file mode 100644
index 0000000000..4a6c301aa1
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/elements/requirements-relating-to-bidirectional-algorithm-formatting-characters/reference/dir-isolation-005-ref.html
@@ -0,0 +1,16 @@
+
+
+
+
+The dir attribute: isolated from following text, opposite direction
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Test passes if the two boxes are identical.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ‭א ב...‬
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ‭a b...‬
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ‭...b a‬
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ‭...ב א‬
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ‭א ב...‬
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ‭a b...‬
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ‭...b a‬
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ‭...ב א‬
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
diff --git a/testing/web-platform/tests/html/dom/elements/requirements-relating-to-bidirectional-algorithm-formatting-characters/reference/dir-isolation-006-ref.html b/testing/web-platform/tests/html/dom/elements/requirements-relating-to-bidirectional-algorithm-formatting-characters/reference/dir-isolation-006-ref.html
new file mode 100644
index 0000000000..0f6b7bbbd0
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/elements/requirements-relating-to-bidirectional-algorithm-formatting-characters/reference/dir-isolation-006-ref.html
@@ -0,0 +1,16 @@
+
+
+
+
+The dir attribute: isolated from following text with intervening neutrals, opposite direction
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Test passes if the two boxes are identical.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ‭< א < > ב >...‬
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ‭...< b < > a >‬
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ‭< א < > ב >...‬
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ‭...< b < > a >‬
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
diff --git a/testing/web-platform/tests/html/dom/elements/requirements-relating-to-bidirectional-algorithm-formatting-characters/reference/dir-isolation-006c-ref.html b/testing/web-platform/tests/html/dom/elements/requirements-relating-to-bidirectional-algorithm-formatting-characters/reference/dir-isolation-006c-ref.html
new file mode 100644
index 0000000000..0347c0910c
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/elements/requirements-relating-to-bidirectional-algorithm-formatting-characters/reference/dir-isolation-006c-ref.html
@@ -0,0 +1,16 @@
+
+
+
+
+The dir attribute: isolated from following text with intervening neutrals, same direction
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Test passes if the two boxes are identical.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ‭> א > > ב >...‬
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ‭...< b < < a <‬
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ‭> א > > ב >...‬
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ‭...< b < < a <‬
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
diff --git a/testing/web-platform/tests/html/dom/elements/requirements-relating-to-bidirectional-algorithm-formatting-characters/reference/dir-isolation-007-ref.html b/testing/web-platform/tests/html/dom/elements/requirements-relating-to-bidirectional-algorithm-formatting-characters/reference/dir-isolation-007-ref.html
new file mode 100644
index 0000000000..665153d649
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/elements/requirements-relating-to-bidirectional-algorithm-formatting-characters/reference/dir-isolation-007-ref.html
@@ -0,0 +1,16 @@
+
+
+
+
+The dir attribute: isolated from immediately following text, opposite direction
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Test passes if the two boxes are identical.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ‭אב...‬
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ‭ab...‬
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ‭...ba‬
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ‭...בא‬
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ‭אב...‬
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ‭ab...‬
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ‭...ba‬
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ‭...בא‬
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
diff --git a/testing/web-platform/tests/html/dom/elements/requirements-relating-to-bidirectional-algorithm-formatting-characters/reference/dir-isolation-008-ref.html b/testing/web-platform/tests/html/dom/elements/requirements-relating-to-bidirectional-algorithm-formatting-characters/reference/dir-isolation-008-ref.html
new file mode 100644
index 0000000000..8eb90f8b79
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/elements/requirements-relating-to-bidirectional-algorithm-formatting-characters/reference/dir-isolation-008-ref.html
@@ -0,0 +1,16 @@
+
+
+
+
+The dir attribute: isolated from preceding text, opposite direction
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Test passes if the two boxes are identical.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ‭א ב‬
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ‭a b‬
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ‭ב א‬
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ‭b a‬
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ‭א ב‬
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ‭a b‬
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ‭ב א‬
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ‭b a‬
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
diff --git a/testing/web-platform/tests/html/dom/elements/requirements-relating-to-bidirectional-algorithm-formatting-characters/reference/dir-isolation-009-ref.html b/testing/web-platform/tests/html/dom/elements/requirements-relating-to-bidirectional-algorithm-formatting-characters/reference/dir-isolation-009-ref.html
new file mode 100644
index 0000000000..1d2f57c6cf
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/elements/requirements-relating-to-bidirectional-algorithm-formatting-characters/reference/dir-isolation-009-ref.html
@@ -0,0 +1,16 @@
+
+
+
+
+The dir attribute: isolated from surrounding text, opposite direction
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Test passes if the two boxes are identical.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ‭ג < < b < < א...‬
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ‭...a > > ב > > c‬
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ‭ג < < b < < א...‬
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ‭...a > > ב > > c‬
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
diff --git a/testing/web-platform/tests/html/dom/elements/requirements-relating-to-bidirectional-algorithm-formatting-characters/reference/dir-isolation-009b-ref.html b/testing/web-platform/tests/html/dom/elements/requirements-relating-to-bidirectional-algorithm-formatting-characters/reference/dir-isolation-009b-ref.html
new file mode 100644
index 0000000000..30ee14c6c0
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/elements/requirements-relating-to-bidirectional-algorithm-formatting-characters/reference/dir-isolation-009b-ref.html
@@ -0,0 +1,16 @@
+
+
+
+
+The dir attribute: isolated from surrounding text, auto
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Test passes if the two boxes are identical.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ‭ג < > b > < א...‬
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ‭...a > < ב < > c‬
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ‭ג < > b > < א...‬
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ‭...a > < ב < > c‬
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
+
diff --git a/testing/web-platform/tests/html/dom/elements/the-innertext-and-outertext-properties/dynamic-getter.html b/testing/web-platform/tests/html/dom/elements/the-innertext-and-outertext-properties/dynamic-getter.html
new file mode 100644
index 0000000000..e34fcf5ac1
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/elements/the-innertext-and-outertext-properties/dynamic-getter.html
@@ -0,0 +1,88 @@
+
+innerText/outerText getter test with dynamic style changes
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
diff --git a/testing/web-platform/tests/html/dom/elements/the-innertext-and-outertext-properties/getter-first-letter-marker-multicol.html b/testing/web-platform/tests/html/dom/elements/the-innertext-and-outertext-properties/getter-first-letter-marker-multicol.html
new file mode 100644
index 0000000000..3b579dca1c
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/elements/the-innertext-and-outertext-properties/getter-first-letter-marker-multicol.html
@@ -0,0 +1,18 @@
+
+Test innerText/outerText for a combination of a list item with ::first-letter in multicol
+
+
+
+
+
+
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  PASS
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
+
diff --git a/testing/web-platform/tests/html/dom/elements/the-innertext-and-outertext-properties/getter-tests.js b/testing/web-platform/tests/html/dom/elements/the-innertext-and-outertext-properties/getter-tests.js
new file mode 100644
index 0000000000..fd32e8d69a
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/elements/the-innertext-and-outertext-properties/getter-tests.js
@@ -0,0 +1,401 @@
+testText("
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  abc", "abc", "Simplest possible test");
+
+/**** white-space:normal ****/
+
+testText("
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   abc", "abc", "Leading whitespace removed");
+testText("
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  abc ", "abc", "Trailing whitespace removed");
+testText("
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  abc  def", "abc def", "Internal whitespace compressed");
+testText("
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  abc\ndef", "abc def", "\\n converted to space");
+testText("
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  abc\rdef", "abc def", "\\r converted to space");
+testText("
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  abc\tdef", "abc def", "\\t converted to space");
+testText("
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  abc 
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  def", "abc\ndef", "Trailing whitespace before hard line break removed");
+testText("
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  abc
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   def", "abc\ndef", "Leading whitespace after hard line break removed");
+
+/**** 
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   ****/
+
+testText("
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   abc", " abc", "Leading whitespace preserved");
+testText("
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  abc ", "abc ", "Trailing whitespace preserved");
+testText("
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  abc  def", "abc  def", "Internal whitespace preserved");
+testText("
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  abc\ndef", "abc\ndef", "\\n preserved");
+testText("
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  abc\rdef", "abc\ndef", "\\r converted to newline");
+testText("
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  abc\tdef", "abc\tdef", "\\t preserved");
+testText("
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  abc
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  def
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ", "abc\ndef", "Two 
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   siblings");
+
+/**** 
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   ****/
+
+testText("
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   abc", " abc", "Leading whitespace preserved");
+testText("
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  abc ", "abc ", "Trailing whitespace preserved");
+testText("
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  abc  def", "abc  def", "Internal whitespace preserved");
+testText("
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  abc\ndef", "abc\ndef", "\\n preserved");
+testText("
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  abc\rdef", "abc\ndef", "\\r converted to newline");
+testText("
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  abc\tdef", "abc\tdef", "\\t preserved");
+
+/****  ****/
+
+testText(" abc", " abc", "Leading whitespace preserved");
+testText("abc ", "abc ", "Trailing whitespace preserved");
+testText("abc  def", "abc  def", "Internal whitespace preserved");
+testText("abc\ndef", "abc\ndef", "\\n preserved");
+testText("abc\rdef", "abc\ndef", "\\r converted to newline");
+testText("abc\tdef", "abc\tdef", "\\t preserved");
+
+/**** 
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   ****/
+
+testText("
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   abc", "abc", "Leading whitespace removed");
+testText("
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  abc ", "abc", "Trailing whitespace removed");
+testText("
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  abc  def", "abc def", "Internal whitespace collapsed");
+testText("
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  abc\ndef", "abc\ndef", "\\n preserved");
+testText("
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  abc\rdef", "abc\ndef", "\\r converted to newline");
+testText("
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  abc\tdef", "abc def", "\\t converted to space");
+
+/**** Collapsing whitespace across element boundaries ****/
+
+testText("
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  abc  def", "abc def", "Whitespace collapses across element boundaries");
+testText("
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  abc  def", "abc def", "Whitespace collapses across element boundaries");
+testText("
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  abc  def", "abc def", "Whitespace collapses across element boundaries");
+testText("
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  abc  def", "abc  def", "Whitespace around  should not be collapsed");
+testText("
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  abc  def", "abc  def", "Whitespace around inline-block should not be collapsed");
+testText("
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  abc  def  ghi", "abc def ghi", "Trailing space at end of inline-block should be collapsed");
+testText("
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  abc
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ", "abc", "Whitespace between  and block should be collapsed");
+testText("
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  abc
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ", "abc", "Whitespace between inline-block and block should be collapsed");
+testText("
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  abc  def", "abc  def", "Whitespace around  should not be collapsed");
+testText("
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  abc  def", "abc  def", "Whitespace around  should not be collapsed");
+testText("
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   abc", " abc", "Leading whitesapce should not be collapsed");
+testText("
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  abc ", "abc ", "Trailing whitesapce should not be collapsed");
+testText("
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  abc  def", "abc def", "Whitespace around empty span should be collapsed");
+testText("
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  abc  def", "abc def", "Whitespace around empty spans should be collapsed");
+testText("
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   abc", " abc", " should not collapse following space");
+testText("
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  abc  def", "abc\ndef", "Replaced element  with display:block should be treated as block-level");
+testText("
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  abc  def", "abc\ndef", "Replaced element  with display:block should be treated as block-level");
+
+/**** Soft line breaks ****/
+
+testText("
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  abc def", "abc def", "Soft line breaks ignored");
+testText("
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  abc-def", "abc-def", "Soft line break at hyphen ignored");
+testText("
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  abc def", "abc def", "Whitespace text node preserved");
+
+/**** Soft line breaks when word-break:break-word is in effect ****/
+/* (based on Testcase #2 at https://bugzilla.mozilla.org/show_bug.cgi?id=1241631) */
+
+testText("
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Hello Kitty
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ", "Hello Kitty", "Soft breaks ignored in presence of word-break:break-word");
+testText("
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Hello Kitty
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ", "Hello Kitty", "Element boundaries ignored for soft break handling (1)");
+testText("
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Hello  Kitty
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ", "Hello Kitty", "Whitespace collapses across element boundaries at soft break (1)");
+testText("
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Hello Kitty
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ", "Hello Kitty", "Element boundaries ignored for soft break handling (2)");
+testText("
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Hello  Kitty
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ", "Hello Kitty", "Whitespace collapses across element boundaries at soft break (2)");
+testText("
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Hello Kitty
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ", "Hello Kitty", "Element boundaries ignored for soft break handling (3)");
+testText("
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Hello  Kitty
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ", "Hello Kitty", "Whitespace collapses across element boundaries at soft break (3)");
+testText("
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Hello   Kitty
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ", "Hello Kitty", "Whitespace collapses across element boundaries at soft break (4)");
+testText("
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Hello Kitty
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ", "Hello Kitty", "Element boundaries ignored for soft break handling (4)");
+testText("
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Hello Kitty
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ", "Hello Kitty", "Element boundaries ignored for soft break handling (5)");
+testText("
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Hello Kitty
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ", "HELLO KITTY", "Soft breaks ignored, text-transform applied");
+testText("
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Hello
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   Kitty
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ", "Hello\nKitty", "
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   returned as newline, following space collapsed");
+testText("
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Hello 
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Kitty
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ", "Hello\nKitty", "
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   returned as newline, preceding space collapsed");
+testText("
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Hello  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    Kitty
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  ", "Hello\nKitty", "
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   returned as newline, adjacent spaces collapsed across element boundaries");
+
+/**** first-line/first-letter ****/
+
+testText("
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  abc def", "ABC def", "::first-line styles applied");
+testText("
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  abc def", "Abc def", "::first-letter styles applied");
+testText("
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  abc def", "abc def", "::first-letter float ignored");
+
+/****   ****/
+
+testText("
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   ", "\xA0", "  preserved");
+
+/**** display:none ****/
+
+testText("
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  abc", "abc", "display:none container");
+testText("
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  abc  def", "abc  def", "No whitespace compression in display:none container");
+testText("
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   abc def ", " abc def ", "No removal of leading/trailing whitespace in display:none container");
+testText("
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  123abc", "123", "display:none child not rendered");
+testText("
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  abc", "abc", "display:none container with non-display-none target child");
+testTextInSVG("
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  abc", "abc", "non-display-none child of svg");
+testTextInSVG("